Open Pit Design 1
Transcript of Open Pit Design 1
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Copyright © CAE Datamine Corporate Limited
Page 2 of 2Introduction to the Open Pit Design Tutorial
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The Open Pit Design Data Set
The Viking Bounty open pit data set used in this tutorial represents the output from an NPV Scheduler open pit optimization process, the
output ultimate pit limits and resultant open pit design. The mineral resource which formed the input into the optimization process is a
shallow, hydrothermal Cu-Au deposit. The data set consists of the following:
surface topography
ultimate pit block model and wireframe
example open pit designs for the following pit design methods:
toe-ramp-crest
toe-ramp
toe contours
Quick Pit (automated design).
Some of this data can be seen in the image below, viewed from above the topography surface and from the south-west:
The pit optimization and design was generated using the following economic and mining parameters:
T e Open Pit Design Data SetThe open pit design data set.
Face Angle: 60 degrees Rock Density: 2.5 t/m3
Road Width: 20 meters Mining Cost: 0.95 $/t
Road Gradient: 1:10 (10%) Processing Cost: 3.63 $/t
Berm Width: 8 meters Gold Price: 11.25 $/g
Bench Height: 20 meters Copper Price: 2094 $/t
Ultimate Pit Slope: 50 degrees
Page 1 of 2The Open Pit Design Data Set
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Bench Naming Convention
In this tutorial, the top elevation of a bench is used to name the bench. Other naming conventions can
also be used when designing your pit e.g. bottom or mid bench elevations or a non-elevation related
naming system.
Related Topics
Tutorial Files List
Copyright © CAE Datamine Corporate Limited
Page 2 of 2The Open Pit Design Data Set
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_vb_tr_pit260.dm - Strings - the toe-ramp open pit design for bench 260
_vb_tr_pit260Crests.dm -Strings - the toe-ramp open pit design including crests up to bench 260 (top
bench)
_vb_trc_pit - Strings - the toe-ramp-crest open pit design trimmed to topography
_vb_trc_pit0.dm trc_pit0 Strings - the toe-ramp-crest open pit design up to top of bench 0
_vb_trc_pit-20.dm trc_pit-20 Strings - the toe-ramp-crest open pit design for bench -20 (lowest bench)
_vb_trc_pit70.dm - Strings - the toe-ramp-crest open pit design up to top of bench 70
_vb_trc_pit80.dm trc_pit80 Strings - the toe-ramp-crest open pit design up to top of bench 80
_vb_trc_pit110.dm - Strings - the toe-ramp-crest open pit design up to top of bench 110
_vb_trc_pit140.dm trc_140 Strings - the toe-ramp-crest open pit design up to top of bench 140
_vb_trc_pit240.dm - Strings - the toe-ramp-crest open pit design up to top of bench 240
_vb_trc_pit240pt.dm /
_vb_trc_pit240tr.dmtrc_pit240pt / trc_pit240tr Wireframes - toe-ramp-crest pit, untrimmed to topography
_vb_trc_PitTopoInt.dm trc_PitTopoInt Strings - toe-ramp-crest open pit and topography wireframes intersection
_vb_trc_PitTopopt.dm /
_vb_trc_PitTopotr.dm
trc_PitTopopt /
trc_PitTopotrWireframes - merged pit and topography
...\VBOP\Datamine:
_vb_npvmod1.dm - Block Model - ultimate pit
_vb_npvssurfpt.dm /
_vb_npvssurftr.dm- Wireframes - ultimate pit shell surface
_vb_stopopt.dm /
_vb_stopotr.dm- Wireframes - topography surface
Related Topics
Tutorial Exercises List
Copyright © CAE Datamine Corporate Limited
Page 2 of 2Tutorial Files List
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Terminology
The following terms are commonly used in open pit design and are also used in this tutorial:
Bench - a horizontal excavation slice within the open pit, generally having a height range of 5-20m. The top and bottom extents of a
bench are defined by a pair of outlines i.e. the crest and toe outlines. A full stack of benches makes up the full open pit.
Crest - the top limit (outer edge) of a bench, usually defined by a perimeter string.
Toe - the bottom limit of a bench, usually defined by a perimeter string.
Face - the vertical or inclined surface defined by the pair of crest and toe strings i.e. the side of a bench.
Face Angle - the angle, in degrees, measured from the horizontal, describing the angle of the face; also known as the batter angle.
These are summarized in the following vertical section diagram:
The tutorial exercises use the bottom-up design approach where the pit is designed from the bottom of the pit shell upwards towards the
topography surface; a top-down approach would use the same tools and similar general techniques.
The following open pit design methods are covered in this tutorial:
Toe-Ramp-Crest Method
The Toe-Ramp-Crest method involves designing the pit on a bench by bench basis usually starting from the lowest bench and working
upwards. The toe string is created, the ramp is inserted and finally the crest strings are added. This method builds ramps that include access
to the berms and it can be applied working either from the bottom up or the top down.
Toe-Ramp Method
The Toe-Ramp method involves creating all the toe and ramp strings first and then adding the crest strings. This method is quicker than the
Toe-Ramp-Crest approach and yields a continuous ramp with no offsets. You must however, complete the pit design in the same session of
Studio and the pit can only be designed from the bottom up.
Contours Method
Open Pit DesignElements of open pit design.
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The Contours method involves inserting a ramp and crest strings into an existing set of toe contour strings. These toe strings are typically
created by generating contours around an optimum pit shell block model.
Automated Pit Design (QUICKPIT)
The QUICKPIT process is designed to speed up open pit design, and access existing Studio tools in an efficient way. QUICKPIT enables an
iterative design process whereby the design of a pit can be altered (ramp positions, gradients, berms etc.) to find the best results.
Copyright © CAE Datamine Corporate Limited
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Overview
The location, extraction sequence and extents of an open pit design is typically determined by a scheduled ultimate pit model or shell. This is
generally output from a program like NPV Scheduler which is used to determine the limits and optimal extraction sequence of a potential
open pit using various economic, environmental, mining and mineral processing parameters.
The 3D output from a scheduled ultimate pit typically includes the following data:
This output is then used to guide the open pit design process.
U timate Pit S e s About ultimate pit shell models.
NPVS Block Model - Containing only block model cells lying within the extents of the ultimate pit with the fields:
VALUE - the profit generated from mining each block
PHASE - defines a series of pits based on successive reductions in profit values
SEQUENCE - the recommended order in which blocks should be mined to maximize the Net Present
Value of the pit.
NPVS WireframeModel
- Defining the ultimate pit surface.
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List of Exercises
The following table contains a list of the exercises covered in this tutorial, grouped according to the different headings.
Tutoria Exercises List A list of the exercises available in the open pit design tutorial.
Heading Page Exercise
Getting Started Creating a New Project Creating and Saving a New Project
Displaying Design Toolbars Displaying the Open Pit Design Toolbars
Customising Toolbars
Saving the Toolbar Settings to a Profile
Defining Mine Design Settings Defining Project Settings
Defining Mine Design Settings
Working with Pit Shells Viewing Ultimate Pit Shell Models Viewing Ultimate Pit Shell Models
Creating a Custom Display Legend Creating a Custom Display Legend
Applying a Legend
Querying and Filtering Block Model Cells
Manual Design Methods Creating a Pit Base String Creating a Pit Base String
- Toe-Ramp-Crest Method Generating the First Bench Generating the First Bench
Creating a Full Toe-Ramp-Crest Bench Creating a Full Toe-Ramp-Crest Bench
Designing a Switchback Designing a Switchback
Designing at the Topography Surface Designing Through the Topography Surface
- Toe-Ramp Method Generating Toe-Ramp Benche Creating a Toe-Ramp Bench Adding Crest Strings Adding the Crest Strings to the Toe-Ramp Design
Designing at the Topography Designing Through the Topography Surface
- Contours Method Creating Ramp Strings Creating Ramp Strings Between Contours
Generating Ramp Outlines Generating Ramp Outlines from Strings
Adjusting Toes to Ramps Adjusting Toe Contours to Ramps
Adding Crests Below the Topography Adding Crests Below the Topography
Adjusting Crests to Ramps Adjusting Crests to Ramps
Adding Crests at the Topography Adding Crests At the Topography
Automated Pit Design Creating a Single Bench Creating a Single Bench
Creating Multiple Benches Creating Multiple Benches
Designing a Switchback Designing a Switchback
Wireframing and Manipulation Adding Attribute BENCH Interactively Adding and Setting a BENCH Attribute Interactively
Generating a Pit DTM Generating a DTM of the Pit Design
Generating a Pit-Topo Intersection Generating a Pit-Topography Intersection String
Trimming the Design Strings Trimming the Design Strings
Merging the Pit and Topo DTMs Merging the Pit and Topography DTMs
Page 1 of 2Tutorial Exercise List
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Overview
In this part of the tutorial you are going to the create a new project, add files and then save the new project.
Exercises
The following exercises are available on this page:
Creating and Saving a New Project
Exercise: Creating and Saving a New Project
In this exercise, you are going to create a new Studio project "OPDesign1" , in a new folder C:\Database\MyTutorials\OPDesign, add
the relevant data files and then finally save the project. This includes the following tasks:
Creating a tutorial folder and copying in files
Creating a new project
Checking and saving the project.
Creating a Tutorial Folder and Copying In Files
1. In Windows Explorer create the folder C:\Database\MyTutorials\OPDesign.
2. Browse to and open the folder C:\Database\DMTutorials\Data\VBOP\Datamine.
3. Copy these 5 files:
_vb_npvmod1.dm
_vb_npvssurfpt.dm
_vb_npvssurftr.dm
_vb_stopopt.dm
_vb_stopotr.dm
4. Paste the files into your new tutorial folder C:\Database\MyTutorials\OPDesign.
5. Browse to and open the folder C:\Database\DMTutorials\Data\VBOP\Datamine\OPM.
6. Copy all 39 files:
_vb_c_pit240.dm
_vb_c_pitcrest100.dm
_vb_c_pitcrestadj-20.dm
_vb_c_pitcrestadj100.dm
_vb_c_pitrampds.dm
Creating a New ProjectCreating a new Studio 3 project file for the open pit design tutorial.
Prerequisites
Check that you have the Studio 3 tutorial data folders. These are located (with a standard installation) under
C:\Database\DMTutorials. This path should exist and contain two sub-folders; Data and Projects. These contain data and
project files that will be used in the various exercises.
If you cannot locate these folders, please reinstall Studio 3. If this does not resolve the issue, please contact your CAE
Mining support consultant.
Read through the pages under the tutorial heading "Principles".
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_vb_c_pitrampout.dm
_vb_c_pitramptoe-40.dm
_vb_c_pitramptoe80.dm
_vb_c_toecons.dm
_vb_pitbase-40.dm
_vb_pitmod1.dm
_vb_q_pit-20.dm
_vb_q_pit-20adj.dm
_vb_q_pit.dm
_vb_q_pit100.dm
_vb_res_designpit1.dm
_vb_q_pit20.dm
_vb_q_pit80adj.dm
_vb_q_pit80adj2.dm
_vb_tr_pit0.dm
_vb_tr_pit0Crests.dm
_vb_tr_pit-20.dm
_vb_tr_pit200.dm
_vb_tr_pit220.dm
_vb_tr_pit260.dm
_vb_tr_pit260Crests.dm
_vb_trc_pit-20.dm
_vb_trc_pit.dm
_vb_trc_pit0.dm
_vb_trc_pit110.dm
_vb_trc_pit140.dm
_vb_trc_pit240.dm
_vb_trc_pit240pt.dm
_vb_trc_pit240tr.dm
_vb_trc_pit70.dm
_vb_trc_pit80.dm
_vb_trc_PitTopoInt.dm
_vb_trc_PitTopopt.dm
_vb_trc_PitTopotr.dm
7. Paste the files into your new tutorial folder C:\Database\MyTutorials\OPDesign.
8. Minimize the Explorer Window.
Creating a new Project
1. Start Studio 3 using the desktop shortcut -or- Start | All Programs | Datamine | Studio 3.
2. In the Studio 3 window, select File | New....
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3. If the Studio Project Wizard (Welcome ...) dialog is displayed, click Next>.
4. In the Studio Project Wizard (Project Properties) dialog, define the project Name as 'OPDesign1', browse for the Location
'C:\Database\MyTutorials\OPDesign', select the Automatically add files... option, click Project Settings...:
5. In the Project Settings dialog, Automatic Project Updates group, select the options shown below, click OK :
6. Back in the Studio Project Wizard (Project Properties) dialog, click Next>.
7. In the Studio Project Wizard (Project Files) dialog, check that 42 files have been added automatically, click Next>.
8. In the Studio Project Wizard (Your project is ready to create) dialog, click Finish.
Checking and Saving the Project
The welcome dialog isn't shown if the Skip this page in future option was selected the last time a new
project was created.
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In the Project Files control bar, check that all of the files, selected in the previous sections, have been added to the project and that
they are listed in one or more of the various data folders.
Select File | Save -or- in the Standard toolbar, click Save.
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This project file will be used for the remaining exercises in this tutorial
The project file can be set to be automatically updated after project changes have been made
e.g. importing data, generating legends. This is set in the Options dialog using Tools |
Options, and then selecting the Project tab and the Automatic Updating sub-tab. Then,
selecting both the Detect New Files... and Detect Files Added... check boxes ensure automatic
updating is performed
For more information on project options, consult your Studio 3 online reference Help project
(Help | Contents), or the reference topic (open the Project Options dialog and press <F1>
on your Keyboard or click Help)
Copyright © CAE Datamine Corporate Limited
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Overview
In this portion of the tutorial you are going to display and customize toolbars in the Design window that are typically used in the open pit
design process.
Links to exercises
The following exercises are available on this page:
Displaying the Open Pit Design Toolbars
Customising Toolbars
Saving the Toolbar Settings to a Profile
Exercise: Displaying the Open Pit Design Toolbars
In this exercise you are going to display and dock the toolbars required for completing the exercises in this tutorial.
Displaying the Toolbars
1. Select the Design window.
2. Using either View | Customization | Toolbars |..., or by right-clicking in the toolbar docking area and selecting Toolbars,
display the following toolbars:
Boolean Operations
Current Objects
DTM Creation
Data Display
Data Filters
Format
Mine Design
Pit Design
Point and String Editing: Advanced
Point and String Editing: Standard
Snapping
Docking the Floating Toolbars
1. Click inside the header of the floating Mine Design toolbar and drag it into the grey area below the Menu Bar, as shown in the
image below:
Disp aying Design Too arsDisplaying and customizing the toolbars used in the open pit design process.
Prerequisites
Required:
Created a new project and added all the required tutorial files i.e. the exercises on the Creating a New Project page.
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2. Repeat the above step for the remaining, floating toolbars.
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Exercise: Customizing a toolbar
In this exercise you are going to add the Query Line, Query String and Gradient Convention buttons to the Mine Design toolbar.
Adding Buttons to the Toolbar
1. Select the Design window.
2. In the Mine Design toolbar, click More Buttons, select Add or Remove Buttons | Customize....
3. In the Customize dialog, Commands tab, Categories list, select [All Commands].
4. Click in the Commands list, press <D>.
5. Find and then drag-and-drop the following into to the right side of the Mine Design toolbar:
DesignQueryLines
DesignQueryStrings
FormatGradientConvention
6. In the Customize dialog, click Close.
7. The toolbar should now contain the three extra buttons, as shown below:
Exercise: Saving the Toolbar Settings to a Profile
In this exercise you are going to create an open pit design profile by saving the current toolbar, menu and control bar settings to a
Customization File.
Your toolbars will probably be at different locations to those shown in the image above.
Toolbars can be floated inside the Studio 3 main window, or docked in the header area, against the
bottom or the sides of the main window.
Each time Studio is exited, the current displayed toolbars, menu and control bars are saved to
the default Customization File profile.xml, which is located under
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Saving the Toolbar Settings to a Profile
1. Select View | Customization | Customization State | Save....
2. In the Save As dialog, select the path to your tutorial project folder, define the filename as 'OPDProfile.xml', click Save:
3. Select File | Save.
Top of page
C:\Users\Usernam e \AppData\Roaming\Datamine\Datamine Studio.
A custom profile can be loaded from a saved Customization File using View | Customization
| Customization State | Load...
Create different profiles e.g. geological modeling, grade estimation, mine design, VR and save
each of them to a separate Customization File (.xml)
Use Customization Files to: save toolbar settings for different work profiles
create, manage and share standard profiles amongst users within your organization.
Copyright © CAE Datamine Corporate Limited
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Overview
In this portion of the tutorial you are going to define conventions, general interface and project settings that are typically used during the
open pit design process.
Links to exercises
The following exercises are available on this page:
Defining Project Settings
Defining Mine Design Settings
Exercise: Defining Project Settings
In this exercise you are going to define the following project settings:
default string point symbol size
enable automatic redraw
white Design background
Design window grid
evaluation control settings.
Setting a Default Symbol Size for Displayed Data
1. Select File | Settings....
2. In the Project Settings dialog, select the Data Display tab.
3. In the right pane, Symbols group, use the Default symbol size: spin buttons to define a value of '1' mm.
4. Leave the Project Settings dialog open.
5. Click Apply.
Automatic Redraw and White Background
1. Still in the Project Settings dialog, select the Design tab.
2. In the right pane, Control group, select Enable automatic redraw.
3. Select the Design Background Color [White].
4. Leave the Project Settings dialog open.
5. Click Apply.
Design Window Display Grid Settings
1. Select the Design window.
2. In the Format toolbar, click Grids.
De ining Mine Design SettingsSpecifying the open pit design settings for your project.
Prerequisites
Required:
Created a new project and added all the required tutorial files i.e. the exercises on the Creating a New Project page.
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3. In the Format Display dialog, Grids tab, select the Default grid and define the settings shown below, click OK :
Evaluation Control Settings
1. Still in the Project Settings dialog, select the Mine Design tab
2. In the right pane, Evaluation Control group, select the Evaluate Block Model option.
3. Select Fast evaluation.
4. Ensure the following check boxes are clear:
Full cell evaluation
Use Display Legend
5. Click OK .
6. Select File | Save.
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Exercise: Defining Mine Design Settings
In this exercise you are going to define the mine design settings:
metric units
gradient convention to 1:N and positive up
face angle
berm width.
Measurement Unit Settings
Clearing the Full cell evaluation check box allows the evaluation commands to run a partial cell
evaluation i.e. the portions of block model cells falling outside the evaluated strings or
wireframes do not form part of the evaluation. This allows a more accurate evaluation to be
done, but is also generally slower.
The default selected item in the Legend drop-down list is used for now, as an evaluation legend
will be defined in a later exercise.
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All dimensions given in this tutorial are based on metric units.
1. To ensure your system is in this mode, select Tools | Options.
2. In the Options dialog, select the Data - General tab.
3. Set Drawing Units to Metric (mm).
4. Set Data Units to Metric (m).
5. Click OK .
Setting Gradient Convention
1. Select the Design window.
2. Select Format | Gradient Convention (grc).
3. In the Gradient Convention dialog, select the Gradient In option Percent %.
4. Select the Direction option +ve UP, click OK .
Setting the Road, Berm and Contour Colors
1. Select the Design window.
2. Select Applications | Open Pit | Set Colors | Road (rcol).
3. In the Studio 3 dialog, check that the color is set to '5.0' i.e. green, click OK .
4. Select Applications | Open Pit | Set Colors | Berm (bc).
5. In the Studio 3 dialog, check that the color is set to '3.0' i.e. orange, click OK .
6. Select Applications | Open Pit | Set Colors | Contour (cc).
7. In the Studio 3 dialog, check that the color is set to '4.0' i.e. yellow, click OK .
Setting the Face Angle and Berm Width
1. Select Applications | Open Pit | Set Face Angle (fng).
2. In the Studio 3 dialog, check that the default face angle is '60' degrees, click OK .
3. Select Applications | Open Pit | Set Berm Width (sbw).
4. In the Studio 3 dialog, set the berm width to '8' m, click OK .
5. Select File | Save.
In Studio's pit design tools, road gradients are expressed as percent and face angles are in degrees.
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Top of page
Copyright © CAE Datamine Corporate Limited
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Overview
In this part of the tutorial you are going to view ultimate pit shell block model and wireframe model data.
Link to Exercises
The following exercises are available on this page:
Viewing Ultimate Pit Shell Models
Exercise: Viewing Ultimate Pit Shell Model Data
In this exercise, you are going to view the block model and wireframe output from an NPV Scheduler ultimate pit and optimized schedulingprocess. This includes the following tasks:
Loading the ultimate pit model data
Viewing the model data.
Loading the Ultimate Pit Model Data
1. Select the Design window.
2. Select the Project Files control bar, All Tables folder.
3. Select, drag-and-drop the following files into the Design window:
_vb_npvmod1
_vb_npvssurftr
4. In the View Control toolbar, click Zoom All Data.
5. In the Design window, check that your view is as shown below:
Viewing U timate Pit S e Mo e s Viewing ultimate pit shell block and wireframe models.
Prerequisites
Required:
Created a new project and added all the required tutorial files i.e. the exercises on the Creating a New Project page.
Recommended:
Displayed and customized the open pit design toolbars; saved a profile i.e. the exercises on the Displaying Design Toolbars
page.
Specified project and mine design settings i.e. the exercises on the Specifying Design Settings page.
Files required for the exercises on this page:
_vb_npvmod1
_vb_npvssurfpt / _vb_npvssurftr
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6. In the VR window, check that your view is as shown below:
Viewing the Model Data
1. Select the Design window.
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2. In the View Control toolbar, click View Settings.
3. In the View Settings dialog, Section Definition tab, Section Orientation group, select North-South, click OK .
4. In the Sheets control bar, Design Overlays folder, right-click _vb_npvssurftr/_vb_npvssurfpt (wireframe), select Format.
5. In the Format Display dialog, Overlays tab, Overlay Format group, Style sub-tab, Display As group, select Intersection, click Apply.
6. In the Color sub-tab, Color group, select Fixed and the color [Red (2)].
7.In the Line Style group, select the Fixed linestyle [
____
], and set Width to [2], click OK .8. In the Design window, check that your view is as shown below:
9. Select File | Save.
Top of page
In the above image, the block model is currently colored on the VALUE (i.e. profit) field using a default
legend. The SEQUENCE field also provides valuable information when designing final and interim pits toachieve the highest NPV. The block model and wireframe extents of the pit shell indicate that the pit
base is at an elevation (Z value) -40m and the VALUE field values show that the ore is situated in the
bottom half of the pit.
Copyright © CAE Datamine Corporate Limited
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Overview
In this portion of the tutorial you are going to create and apply a custom display legend for a block model.
Link to Exercises
The following exercises are available on this page:
Creating a Custom Display Legend
Applying a Legend
Querying and Filtering Block Model Cells
Exercise: Creating a Custom Display Legend
In this exercise you are going to create a new interval legend named NPV SEQUENCE, for the optimal NPVS extraction field (SEQUENCE) in
the block model _npvmod1. The legend will have 6 intervals, will be linear and colored using the standard rainbow color palette.
1. Select Format | Legends.
2. In the Legends Manager dialog, click New Legend....
3. In the Legend Wizard (1): Data Table Column dialog, select the Use Object Field option.
4. In the Object drop-down list, select [_vb_npvmod1 (block model)]
5. In the Field drop-down list, select [SEQUENCE], click Next>.
6. In the Legend Wizard (2): Legend Storage dialog, select the Current Project File option, click Next>:
7. In the Legend Wizard (3): General dialog, define the legend Name as 'NPV SEQUENCE', check that Type is [Numeric], select the
Ranges option, click Next>:
8. In the Legend Wizard (4): Data Range dialog, define the Number of Items as '6', click Next>:
9. In the Legend Wizard (5): Legend Distribution dialog, set the Distribution Type to [Linear], select the Equal Width option, click
Next>:
Creating a Custom Disp ay LegenCreating and applying a new display legend for a block model
Prerequisites
Required:
Created a new project and added all the required tutorial files i.e. the exercises on the Creating a New Project page.
Loaded and viewed the ultimate pit shell model data i.e. the exercises on the Viewing Ultimate Pit Shell Models page.
Recommended:
Displayed and customized the open pit design toolbars; saved a profile i.e. the exercises on the Displaying Design Toolbars
page.
Specified project and mine design settings i.e. the exercises on the Specifying Design Settings page.
Files required for the exercises on this page:
_vb_npvmod1
The Minimum and Maximum values are automatically derived from the object selected on the Data
Table Column dialog (step 4), and are read-only.
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10. In the Legend Wizard: Coloring dialog, set the Color Type Range to [Rainbow blue->red], select the Anti Clockwise transition
option, click Preview Legend...
11. In the Legend dialog, check that you legend appears as shown below:
12. Close the Legend preview dialog.
13. Back in the Legend Wizard: Coloring dialog, click Finish.
14. In the Legends Manager dialog, check that the new NPV SEQUENCE legend has been added to the list of project file legends, as
shown below, click Close:
15. Select File | Save.
Exercise: Applying a Legend
In this exercise you are going to format the _vb_npvmod1 (block model) overlay in the Design window by coloring it using the newly created
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NPV SEQUENCE legend.
1. Select the Design window.
2. In the Sheets control bar, Design Overlays folder, right-click _vb_npvmod1 (block model), select Format.
3. In the Format Display dialog, Overlays tab, Overlay Format group, select the Color sub-tab.
4. In the Color group, select the Legend option and the project legend [NPV SEQUENCE].
5. Select the Column [SEQUENCE], click OK .
6. In the Design window, check that the block model has been colored on the SEQUENCE field values as shown below:
7. Select File | Save.
Exercise: Querying and Filtering Block Model Cells
In this exercise you are going to filter the _vb_npvmod1 (block model) object so that only cells with a sequence value greater than zero are
displayed.
1. In the Design window, check that the view is still the north-south section as displayed in the previous exercise.
2. In the View Control toolbar, click Move Plane (mpl).
3. In the Studio 3 dialog, define a distance of '10', click OK .
This exercise follows on directly from the above exercise i.e. Creating a Custom Display Legend and
assumes that it has already been completed.
In the above image, the rainbow color sequence blue-red, applied to the SEQUENCE field values,
indicates the general extraction sequence that should be followed when designing interim pits. In this
view, this would be top-right down to bottom-left.
This exercise follows on directly from the above exercise i.e. Applying a Legend and assumes that it has
already been completed.
Before moving, the Design view plane has a fixed X coordinate value of 6110. This unmoved plane lies
between columns of block model cells and although the cell immediately above the view plane, i.e.
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4. Select Design | Query | Points (qp).
5. In the Design window, click inside one of the blue cells lying outside the limits of the pit shell wireframe:
6. Click Cancel.
7. In the Output control bar note that the cells has a SEQUENCE value of '0':
8. Repeat steps 5 to 7 for a cell inside the pit shell and note that it has a SEQUENCE values greater than zero.
9. In the Data Filters toolbar, click Filter Model (fm).
10. In the Expression Builder dialog, using the various controls, define and test the expression 'SEQUENCE>0', click OK .
11. In the Design window, check that the block model has been filtered so that the blue cells (i.e. those with SEQUENCE=0) are no
longer displayed, as shown below:
towards the screen, is displayed, some queried cell values may return empty results. Moving the view
plane, here 10m towards the screen, so that it intersects cells, will prevent this. After moving X=6100.
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12. Select File | Save.
Top of page
This filtered block model, i.e. with SEQUENCE>0 cells displayed, will be used to guide the placement of
the toe strings during the open pit design process.
Copyright © CAE Datamine Corporate Limited
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Overview
In this part of the tutorial you are going to create a perimeter string for the base of the open pit design string model.
Link to Exercises
The following exercises are available on this page:
Creating a Pit Base String
Exercise: Creating a Pit Base String
In this exercise you are going to create a base perimeter for the open pit design string model at the -40m elevation, using the filtered NPVS block model to define the limits. This will include the following tasks:
Defining data and design plane settings
Creating a new strings object
Drawing the base string by snapping to grids
Saving the new strings object to a Datamine file
Checking the string coordinates.
Defining Data and Design Plane Settings
1. Select the Design window.
2. Select the Sheets control bar and expand the Design Overlays folder.
3. Select only the following overlays (i.e. display these overlays):
Default Grid
Creating a Pit Base StringHow to create a base perimeter string for the pit design
Prerequisites
Required:
Created a new project and added all the required tutorial files i.e. the exercises on the Creating a New Project page.
Loaded and viewed the ultimate pit shell model data i.e. the exercises on the Viewing Ultimate Pit Shell Models page.
Created and applied a custom legend, filtered cells, for the NPVS block model i.e. the exercises on the Creating a Custom Display
Legend page.
Recommended:
Displayed and customized the open pit design toolbars; saved a profile i.e. the exercises on the Displaying Design Toolbars page.
Specified project and mine design settings i.e. the exercises on the Specifying Design Settings page.
Files required for the exercises on this page:
_vb_npvmod1
The model is currently colored by the SEQUENCE field which defines the optimal NPVS extraction sequence
for the blocks. The block model extents of the pit shell indicate that the pit base is at an elevation (Z value)
-40m.
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_vb_npvmod1 (block model)
4. In the View Control toolbar, click View Settings.
5. In the View Settings dialog, define the Section Orientation and Mid-Point XYZ coordinate (6110, 5100, -40) parameters shown below,
click OK :
6. In the View Control toolbar, click Zoom In.
7. In the Design window, drag a zoom rectangle around the displayed block model cells:
Creating a New Strings Object
1. In the Current Objects toolbar, select the Object Type [Strings], click Create New Object using the default template.
2. In the Loaded Data control bar, check that the New Strings object is listed that it is the current strings object i.e. highlighted bold:
Drawing the Pit Base String by Snapping to Grids
1. In the Snapping toolbar, select Snap Mode Grid.
2. In the Current Objects toolbar, select the Attribute [COLOUR], select the Attribute Value [11 (Bright Blue)].
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3. In the Point and String Editing: Standard toolbar, click New String.
4. In the Design window, using the coordinates displayed in the Status Panel and the resultant image shown further below (step 11),
draw a clockwise string by right-clicking at the following points in sequence:
XY-coordinate '5910, 5160'
XY-coordinate '5930, 5180'
XY-coordinate '5970, 5180'
XY-coordinate '6090, 5140'
XY-coordinate '6110, 5100'
XY-coordinate '6130, 5040'
XY-coordinate '6130, 4940'
XY-coordinate '6050, 4920'
XY-coordinate '5970, 4920'
XY-coordinate '5910, 5040'.
5. Click Cancel.
6. In the Point and String Editing: Standard toolbar, click Close String.
7. In the Snapping toolbar, select Snap Mode Points.
8. In the Design window, right-click and select Deselect All Strings.
9. Check that your new base perimeter (closed string) is as shown below:
It is important that the snap mode is changed back to points. Not doing so will effect later exercises.
The start point of the string has a larger symbol than the other points.
The above perimeter can be edited or manipulated using the various commands in the Menu Bar's Design
menu.
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Saving the New Strings Object to a Datamine File
1. In the Loaded Data control bar, right-click on the New Strings object, select Data | Save As.
2. In the Save New 3D Object dialog, click Single Precision Datamine (.dm) File.
3. In the Save New Strings dialog, select the path to you tutorial folder, define the File name: as 'pitbase-40', click Save.
4. In the Loaded Data control bar, check that the New Strings object has been replaced by the object pitbase-40 (strings).
Checking the String Coordinates
1. In the Project Files control bar, expand the All Files or Strings follder.
2. Double-cl ick pitbase-40.
3. In the Datamine Table Editor dialog, check the string point coordinates and color values, select File | Exit :
4. Back in Studio 3, select File | Save.
Top of page
In this exercise the perimeter has been drawn by snapping to grid points; these could also have been
drawn without snapping i.e. using left-click when placing points.
You can check your perimeter against the example file _vb_pitbase-40.dm. This example file contains a
perimeter with the same number of points, in approximately the same positions, but which were digitized
without snapping to a 10x10m grid. As a result of this, the points have slightly different coordinate values.
Copyright © CAE Datamine Corporate Limited
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Overview
In this part of the tutorial you are going to use a pit base string (toe string) as a starting point for creating the ramp and crest strings for the
first (lowest) bench in a pit.
Link to Exercises
The following exercises are available on this page:
Generating the First Bench
Exercise: Creating the First Bench
In this exercise you are going to use the pit base string _vb_pitbase-40 as a starting point for creating the ramp and crest strings for the first
(lowest) bench i.e. the -20m bench, which will be 20m high. This includes the following tasks:
Defining data and design plane settings
Saving to a new strings file
Creating the ramp
Editing the toe
Creating the crest
Saving the data.
Generating t e First BencToe-ramp-crest method: generating the ramp and crest strings for the lowest bench
The Toe-Ramp-Crest design method (for a bottom-up design direction) makes use of toe, ramp and
crest string elements, created in that order, to define a bench in the pit. The full pit design is typically
done on a bench by bench basis, starting from the lowest bench and working upwards. For a single
bench, the toe string is created and adjusted, the ramp is inserted and finally the crest string are
added. This method builds ramps that include access to the berms and can be applied working either
from the bottom up or the top down.
Prerequisites
Required:
Created a new project and added all the required tutorial files i.e. the exercises on the Creating a New Project page.
Loaded and viewed the ultimate pit shell model data i.e. the exercises on the Viewing Ultimate Pit Shell Models page.
Created and applied a custom legend, filtered cells, for the NPVS block model i.e. the exercises on the Creating a Custom
Display Legend page.
Recommended:
Displayed and customized the open pit design toolbars; saved a profile i.e. the exercises on the Displaying Design Toolbars
page.
Specified project and mine design settings i.e. the exercises on the Specifying Design Settings page.
Created a pit base string i.e. the exercises on the Creating a Pit Base String page.
Files required for the exercises on this page:
_vb_npvmod1
_vb_pitbase-40
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Defining Data and Design Plane Settings
1. Select the Design window.
2. In the Project Files control bar, Strings folder, drag-and-drop the following file into the Design window:
_vb_pitbase-40
3. In the Sheets control bar, Design Overlays folder, select only the following overlays (i.e. display these overlays):
Default Grid
_vb_pitbase-40 (strings)
_vb_npvmod1 (block model)
4. In the View Control toolbar, click Zoom All Data.
5. In the View Control toolbar, click View Settings.
6. In the View Settings dialog, define the Section Orientation and Mid-Point XYZ coordinate (6110, 5100, -40) parameters shown
below, click OK :
7. In the View Control toolbar, click Zoom In.
8. In the Design window, drag a zoom rectangle to display the view extents shown below:
Saving To a New Strings File
The face angle and berm width can be changed at any time during the design process.
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1. In the Loaded Data control bar, right-click on the _vb_pitbase-40 (strings) object, select Data | Save As.
2. In the Save New 3D Object dialog, click Single Precision Datamine (.dm) File.
3. In the Save New Strings dialog, select the path to your tutorial folder 'C:/Database/MyTutorials/OPDesign', define the File name: as
'trc_pit-20.dm', click Save.
4. In the Loaded Data control bar, check that _vb_pitbase-40 (strings) has been replaced by trc_pit-20 (strings).
5. Check that trc_pit-20 (strings) is the current strings object i.e. highlighted bold.
Creating a Ramp
1. In the Design window, right-click and select Deselect All Strings (das).
2. In the Pit Design toolbar, click Create Road Segment (rseg).
3. Follow the messages displayed on the left side of the Status Bar for the steps below.
4. In the Design window, select (left-click) the pit base perimeter (this step selects the toe string).
5. Click at a location outside of the base perimeter (this step defines the high side i.e. crest side, of the toe string).
6. In the Studio 3 (Road Segment) dialog, define the settings as follows, click OK :
7. As shown below, left-click close to the required start point (string vertex) on the toe string and then left-click at a location
approximately 20m to the north:
RL at end of road is the elevation at the top of the ramp.
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8. In the Design window, check that a green ramp string has been created as shown below:
Editing the Toe String at the Ramp
1. Select the Design window.
2. In the Point and String Editing: Standard toolbar, click Move Point (mpo).
3. Select the first point south of the ramp and place it 20m to the east, click Cancel.
The first point defines the inside corner of the ramp and must be snapped to the toe string; the second
point indicates the upwards direction of the ramp i.e. north.
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4. In the Point and String Editing: Standard toolbar, click Insert Points (ipo).
5. Place a new point 30m south of the point that has just been moved, click Cancel.
6. In the Design window, right-click and select Deselect All Strings (das).
7. Check that your two toe string points south of the ramp are similar to what is shown below:
Creating the Crest
1. Select the Design window.
2. In the Pit Design toolbar, click Create Road Contour (rcon).
3. Select the blue toe string.
4. In the Studio 3 (Create Contour) dialog, define the contour elevation as '-20', click OK :
Do not edit the road string, as the points on this string contain special control information required for
the next stage in the design. If you are unhappy about the shape of the road string, the entire road
string should be erased (ers) and the shape of the toe string it is projected from should be modified.
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5. In the Design window, right-click and select Deselect All Strings (das).
6. Check that the yellow crest string (perimeter) has been created as shown below:
Saving the Data
1. Select File | Save.
2. In the Save Data/Set Auto Reload dialog, select to Save the trc_pit-20 (strings) object, click OK .
Top of page
If you are not happy with the design at any stage, you can erase the incorrect strings and recreate them
using the open pit design commands. The design MUST be restarted from either a toe or crest string,
NOT from a road segment.
You can check your design strings against the example file _vb_trc_pit-20.dm.
Copyright © CAE Datamine Corporate Limited
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Overview
In this part of the tutorial you are going to start with a set of bench strings and create a full bench sequence for a bench i.e. of new toe, ramp
and crest strings.
Link to Exercises
The following exercises are available on this page:
Creating a Full Toe-Ramp-Crest Bench
Exercise: Creating a Full Toe-Ramp-Crest Bench
In this exercise you are going to use the bench strings _vb_trc_pit-20 as a starting point for creating the next bench (bench 0m) consisting of
a full sequence of new toe, ramp and crest strings; it will also be 20m high. This includes the following tasks:
Defining data and design plane settings
Saving to a new strings file
Creating the toe
Moving the toe out
Adjusting and conditioning the toe string
Creating the ramp
Creating the crest
Creating a Fu Toe-Ramp-Crest BencToe-ramp-crest method: creating a complete bench sequence
The Toe-Ramp-Crest design method (for a bottom-up design direction) makes use of toe, ramp and
crest string elements, created in that order, to define a bench in the pit. The full pit design is typically
done on a bench by bench basis, starting from the lowest bench and working upwards. For a single
bench, the toe string is created and adjusted, the ramp is inserted and finally the crest string are
added. This method builds ramps that include access to the berms and can be applied working either
from the bottom up or the top down.
Prerequisites
Required:
Created a new project and added all the required tutorial files i.e. the exercises on the Creating a New Project page.
Loaded and viewed the ultimate pit shell model data i.e. the exercises on the Viewing Ultimate Pit Shell Models page.
Created and applied a custom legend, filtered cells, for the NPVS block model i.e. the exercises on the Creating a Custom
Display Legend page.
Recommended:
Displayed and customized the open pit design toolbars; saved a profile i.e. the exercises on the Displaying Design Toolbars
page.
Specified project and mine design settings i.e. the exercises on the Specifying Design Settings page.
Files required for the exercises on this page:
_vb_npvmod1
_vb_trc_pit-20
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Saving the data.
Defining Data and Design Plane Settings
1. Select the Design window.
2. In the Project Files control bar, Strings folder, drag-and-drop the following file into the Design window:
_vb_trc_pit-20
3. In the Sheets control bar, Design Overlays folder, select only the following overlays (i.e. display these overlays):
Default Grid
_vb_trc_pit-20 (strings)
_vb_npvmod1 (block model)
4. In the View Control toolbar, click Zoom All Data.
5. In the View Control toolbar, click View Settings.
6. In the View Settings dialog, define the Section Orientation and Mid-Point XYZ coordinate (6110, 5100, -20) parameters shown
below, click OK :
7. In the View Control toolbar, click Zoom In.
8. In the Design window, drag a zoom rectangle to display the view extents shown below:
These settings place the Design view plane (the working plane) at an elevation of -20m i.e. the bottom
of bench 0m. This allows the block models cells for bench 0m to be displayed and also used to guide the
positioning of the new toe string.
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Saving To a New Strings File
1. In the Loaded Data control bar, right-click on the _vb_trc_pit-20 (strings) object, select Data | Save As.
2. In the Save New 3D Object dialog, click Single Precision Datamine (.dm) File.
3. In the Save New Strings dialog, select the path to your tutorial folder 'C:/Database/MyTutorials/OPDesign', define the File name: as
'trc_pit0.dm', click Save.
4. In the Loaded Data control bar, check that _vb_trc_pit-20 (strings) has been replaced by trc_pit0 (strings).
5. Check that trc_pit0 (strings) is the current strings object i.e. highlighted bold.
Creating the Toe
1. In the Design window, right-click and select Deselect All Strings (das).
2. In the Design window, select (left-click) the yellow bench -20 crest string.
3. In the Pit Design toolbar, click Set Berm Width (sbw).
4. In the Studio 3 (Berm Width) dialog, define the Default Berm Width as '8', click OK :
5. In the Pit Design toolbar, click Create Road Berm (rbe).
6. Follow the messages displayed on the left side of the Status Bar for the steps below.
7. If required, click at a location outside of this perimeter (this defines the berm side of the crest string).
8. In the Design window, right-click and select Deselect All Strings (das).
9. Check that an orange berm (toe) string has been created as shown below, noting the position of the string at the top of the ramp and
the block models cells falling outside the toe string in the southern portion of the pit:
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Adjusting and Conditioning the Toe String
1. In the Design window, using the Point and String Editing: Standard toolbar commands Move Points (mpo) and Insert Points
(ipo), adjust the toe string in the southern portion of the pit, outwards to include the ore cells, as indicated by the black dashed line
shown below:
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2. Check that you have moved three and inserted two points, to place the orange toe string in the position shown below:
3. Select the adjusted orange toe string and select Design | Condition | Condition String (cond).
4. In the Studio 3 (Condition String) dialog, define the settings shown below, click OK :
5. In the Design window, right-click and select Deselect All Strings (das).
6. Check that the conditioned toe string is as shown below:
The string will be conditioned so that all chords (segments) are between 4 and 20 metres in length and
no internal string angle will be less than 70 degrees.
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Creating the Ramp
1. In the Design window, select only the adjusted and conditioned orange toe string.
2. In the Pit Design toolbar, click Create Road Segment (rseg).
3. In the Studio 3 (Road Segment) dialog, define the settings shown below, click OK :
4. Follow the messages displayed on the left side of the Status Bar for the steps below.
5. As shown below, right-click (snap) to the corner of the toe string where the previous road segment ends and then left-click at a
location out towards the north-west:
RL at end of road is the elevation at the top of the ramp.
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6. In the Design window, right-click and select Deselect All Strings (das).
7. In the Design window, check that a green ramp string has been created as shown below:
The first point defines the inside corner of the ramp and must be snapped to the toe string; the second
point indicates the upwards direction of the ramp i.e. north-west.
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Creating the Crest
1. In the Design window, select the conditioned orange (-20m elevation) toe string.
2. In the Pit Design toolbar, click Create Road Contour (rcon).
3. In the Studio 3 (Create Contour) dialog, define the contour elevation as '0', click OK .
4. In the Design window, right-click and select Deselect All Strings (das).
5. Check that the yellow crest string (perimeter) has been created as shown below:
The Data Properties control bar can be used to view the properties of the selected string.
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6. Select Format | VR View | Update VR Objects (vro).
7. In the VR window, rotate the view and check that your new toe, ramp and crest strings are as shown below:
Saving the Data
1. Select File | Save.
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2. In the Save Data/Set Auto Reload dialog, select to Save the trc_pit0 (strings) object, click OK .
Top of page
If you are not happy with the design at any stage, you can erase the incorrect strings and recreate them
using the open pit design commands. The design MUST be restarted from either a toe or crest string,
NOT from a road segment.
You can check your design strings against the example file _vb_trc_pit0.dm.
Copyright © CAE Datamine Corporate Limited
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Overview
In this part of the tutorial you are going to design the upper portion of a switchback road for a bench, consisting of new ramp, enlarged crest
flat and new crest strings.
Link to Exercises
The following exercises are available on this page:
Designing a Switchback
Exercise: Designing a Switchback
Designing a Switc acToe-ramp-crest method: using the complete sequence to create a switchback ramp.
The Toe-Ramp-Crest design method (for a bottom-up design direction) makes use of toe, ramp and
crest string elements, created in that order, to define a bench in the pit. The full pit design is typically
done on a bench by bench basis, starting from the lowest bench and working upwards. For a single
bench, the toe string is created and adjusted, the ramp is inserted and finally the crest string are
added. This method builds ramps that include access to the berms and can be applied working either
from the bottom up or the top down.
Prerequisites
Required:
Created a new project and added all the required tutorial files i.e. the exercises on the Creating a New Project page.
Loaded and viewed the ultimate pit shell model data i.e. the exercises on the Viewing Ultimate Pit Shell Models page.
Created and applied a custom legend, filtered cells, for the NPVS block model i.e. the exercises on the Creating a Custom
Display Legend page.
Recommended:
Displayed and customized the open pit design toolbars; saved a profile i.e. the exercises on the Displaying Design Toolbars
page.
Specified project and mine design settings i.e. the exercises on the Specifying Design Settings page.
Files required for the exercises on this page:
_vb_npvmod1
_vb_trc_pit70
The procedure for creating a switchback is much the same as that used to create a standard spiral ramp
section. The general procedure is as follows:
create the lower half of the bench, using a standard toe-ramp-crest sequence
create the upper portion of the bench, using a reverse direction ramp-crest sequence, using the
following guidelines:
the start point for the upper road is the outside corner (and not the inside corner)
the direction point is given in the opposite direction i.e. in the opposite direction to that
of the lower ramp
the crest string at the bottom of the reverse direction ramp requires modification to
include a flat area connecting the two ramps, to form the switchback
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In this exercise you are going to use the pit strings _vb_trc_pit70 as a starting point for creating a switchback for the next bench (bench 80m)
consisting of a full sequence of new toe, ramp and crest strings; the bench will be 10m high. This includes the following tasks:
Defining data and design plane settings
Saving to a new strings file
Creating the upper switchback ramp
Enlarging the 70m crest area
Creating the 80m toe
Saving the data.
Defining Data and Design Plane Settings
1. Select the Design window.
2. In the Project Files control bar, Strings folder, drag-and-drop the following file into the Design window:
_vb_trc_pit70
3. In the Sheets control bar, Design Overlays folder, select only the following overlays (i.e. display these overlays):
Default Grid
_vb_trc_pit70 (strings)
_vb_npvmod1 (block model)
4. In the View Control toolbar, click Zoom All Data.
5. In the View Control toolbar, click View Settings.
6. In the View Settings dialog, define the Section Orientation and Mid-Point XYZ coordinate (6110, 5100, 70) and other parameters
shown below, click OK :
7. In the View Control toolbar, click Zoom In.
8. In the Design window, drag a zoom rectangle to display the view extents shown below:
the upper portion does not have a toe string
a final crest string is created as normal.
A switchback can be created at any elevation within the pit.
These settings place the Design view plane (the working plane) at an elevation of 70m i.e. the bottom
of bench 80. This allows the block models cells for bench 80 to be displayed and also used to guide the
positioning of the new toe string. The View | Set Viewplane | Snap to Plane (stpl) command can
also be used to set the view plane i.e. the design plane elevation.
The clipping option is used to display only the data which falls within 20m above or below the selected
view plane. Setting the clipping equal to the bench height makes it possible to view the full previous
bench and the new bench design strings.
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Saving To a New Strings File
1. In the Loaded Data control bar, right-click on the _vb_trc_pit70 (strings) object, select Data | Save As.
2. In the Save New 3D Object dialog, click Single Precision Datamine (.dm) File.
3. In the Save New Strings dialog, select the path to your tutorial folder 'C:/Database/MyTutorials/OPDesign', define the File name: as
'trc_pit80', click Save.4. In the Loaded Data control bar, check that _vb_trc_pit70 (strings) has been replaced by trc_pit80 (strings).
5. Check that trc_pit80 (strings) is the current strings object i.e. highlighted bold.
Creating the Upper Switchback Ramp
1. In the Design window, select the yellow crest string.
2. In the Pit Design toolbar, click Create Road Segment (rseg).
3. In the Studio 3 (Road Segment) dialog, define a Road Gradient % of '10', a Road Width of '20', an RL at end of Road of '80', click
OK :
4. Follow the messages displayed on the left side of the Status Bar for the steps below.
5. As shown below, right-click (snap) to the outside corner of the yellow crest string where the previous road segment ends and then
left-click at a location out towards the south:
RL at end of road is the elevation at the top of the ramp.
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6. In the Design window, check that a green ramp string has been created and that the crest string has been automatically modified,
as shown below:
The first point defines the inside corner of the ramp and must be snapped to the indicated crest string;
the second point indicates the upwards direction of the ramp i.e. south.
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Enlarging the 70m Crest Area
1. In the Design window, using the Point and String Editing: Standard toolbar commands Move Point (mpo) and Insert Points
(ipo), adjust the yellow 70m crest string between the two ramps, outwards to increase the flat area, as indicated by the black dashed
line shown below:
The flat area connecting the two ramps needs to provide enough turning space for machines traveling
on the haul roads and is defined by two crest strings as follows:
an enlarged standard crest string which defines the north-eastern and eastern sides of the flat
area
a new short crest string defining the western side of the flat area, the ends of which aresnapped to the standard crest and the inside top corner of the previous ramp.
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2. Check that you have moved and inserted points, to place the standard yellow crest string in the position shown below:
3. Select the orange 60m toe string.
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4. Using Design | String Tools | Break | At Point (bs), break this string at the two points shown below, starting with the northern
point:
5. Select the short portion of broken string, in the Pit Design toolbar, click Create Road Contour (rcon).
6. In the Studio 3 (Create Contour) dialog, define the contour elevation as '70', click OK .
7. In the Design window, right-click and select Deselect All Strings (das).
8. Check that the short yellow crest string (with three segments) has been created as shown below:
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9. Select this short crest string and using Move Points (mpo), move both end points of this short string, snapping them (right-click) onto
the points shown below:
If you are unsure of where the end points are positioned, first move them away into the adjacent white
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10. Using Design | String Tools | Connect (conn) , following the prompts in the Status Bar, connect the three portions of broken
orange 60m toe string shown below:
11. Zoom out, select the connected 60m toe string and check that it is again a single closed string (perimeter), highlighted yellow in theimage below:
space using left-click, then move them back in again, this time snapping (right-click) them to the
required final points. Here, the northern point of the short crest string snaps to the enlarged standard
crest string; the southern point of the short crest string snaps to the top inside corner of the previous
ramp string.
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Creating the Bench 80 Crest
1. Select the outer, full standard 70m crest string.
2. In the Pit Design toolbar, click Create Road Contour (rcon).
3. In the Studio 3 (Create Contour) dialog, define the Contour Level as '80', click OK .
4. In the Design window, right-click and select Deselect All Strings (das).
5. Check that a full, yellow 80m crest string has been created as shown below:
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6. Select Format | VR View | Update VR Objects (vro).
7. In the VR window, rotate the view and check that your is as shown below:
The upper ramp of the switchback does not have an orange toe string, but instead uses the crest string
which forms part of the lower half ramp.
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Saving the Data
1. Select File | Save.
2. In the Save Data/Set Auto Reload dialog, select to Save the trc_pit80 (strings) object, click OK .
Top of page
If you are not happy with the design at any stage, you can erase the incorrect strings and recreate them
using the open pit design commands. The design MUST be restarted from either a toe or crest string,
NOT from a road segment.
You can check your design strings against the example file _vb_trc_pit80.dm.
Copyright © CAE Datamine Corporate Limited
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Overview
In this part of the tutorial you are going to design the topmost portion of the open pit where it intersects the topography surface.
Link to Exercises
The following exercises are available on this page:
Designing Through the Topography Surface
Exercise: Designing Through the Topography Surface
In this exercise you are going to use the pit strings _vb_trc_pit110 as a starting point for designing the upper half of bench 120 and then the
toe and crest strings up to 240m elevation. This includes the following tasks:
Defining data and design plane settings
Saving to a new strings file
Creating the remainder of bench 120
Designing toes and crests for bench 140
Viewing the toe and crest strings up to 240m elevation
Designing at t e Topograp y Sur aceToe-ramp-crest method: how to design the pit through the topography surface .
The Toe-Ramp-Crest design method (for a bottom-up design direction) makes use of toe, ramp andcrest string elements, created in that order, to define a bench in the pit. The full pit design is typically
done on a bench by bench basis, starting from the lowest bench and working upwards. For a single
bench, the toe string is created and adjusted, the ramp is inserted and finally the crest string are
added. This method builds ramps that include access to the berms and can be applied working either
from the bottom up or the top down.
Prerequisites
Required:
Created a new project and added all the required tutorial files i.e. the exercises on the Creating a New Project page.
Loaded and viewed the ultimate pit shell model data i.e. the exercises on the Viewing Ultimate Pit Shell Models page.
Created and applied a custom legend, filtered cells, for the NPVS block model i.e. the exercises on the Creating a Custom
Display Legend page.
Recommended:
Displayed and customized the open pit design toolbars; saved a profile i.e. the exercises on the Displaying Design Toolbars
page.
Specified project and mine design settings i.e. the exercises on the Specifying Design Settings page.
Files required for the exercises on this page:
_vb_npvmod1
_vb_trc_pit110
_vb_trc_pit240
_vb_stopopt / _vb_stopotr
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Saving the data.
Defining Data and Design Plane Settings
1. Select the Design window.
2. In the Project Files control bar, Strings folder, drag-and-drop the following file into the Design window:
_vb_trc_pit110
3. In the Sheets control bar, Design Overlays folder, select only the following overlays (i.e. display these overlays):
Default Grid
_vb_trc_pit110 (strings)
_vb_stopotr/_vb_stopopt (wireframe)
_vb_npvmod1 (block model)
4. In the Sheets control bar, Design Overlays folder, right-click _vb_stopotr/_vb_stopopt (wireframe), select Format.
5. In the Format Display dialog, Overlays tab, Overlay Format group, Style sub-tab, Display As group, select Intersection, click Apply.
6. In the Color sub-tab, Color group, select Fixed and the color [(10) Bright Green].
7. In the Line Style group, select the Fixed linestyle [ ____
], and set Width to [2], click OK .
8. In the View Control toolbar, click Zoom All Data.
9. In the View Control toolbar, click View Settings.
10. In the View Settings dialog, define the Section Orientation and Mid-Point XYZ coordinate (6110, 5100, 110) and other parameters
shown below, click OK :
11. In the View Control toolbar, click Zoom In.
12. In the Design window, drag a zoom rectangle to display the view extents shown below:
These settings place the Design view plane (the working plane) at an elevation of 110m i.e. the mid
elevation for bench 120.
The clipping option is used to display only the data which falls within 20m above or below the selected
view plane. Setting the clipping equal to the bench height makes it possible to view the full previous
bench and the new bench design strings.
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13. Select Format | VR View | Update VR Objects (vro).
14. In the VR window, pan, rotate and zoom the view and note that the ramp and a portion of the 110m elevation crest string extend
above the topography surface, as shown below:
In the above image the green intersection line, cutting through the southern portion of the pit, is the
110m contour for the topography surface. This line is at the same elevation as the top of the display
lower half of bench 120, which consists of a full set of toe, ramp and crest strings.
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Saving To a New Strings File
1. In the Loaded Data control bar, right-click on the _vb_trc_pit110 (strings) object, select Data | Save As.
2. In the Save New 3D Object dialog, click Single Precision Datamine (.dm) File.
3. In the Save New Strings dialog, select the path to your tutorial folder 'C:/Database/MyTutorials/OPDesign', define the File name: as
'trc_pit140', click Save.
4. In the Loaded Data control bar, check that _vb_trc_pit110 (strings) has been replaced by trc_pit140 (strings).
Creating the Remainder of Bench 120
1. Check that trc_pit140 (strings) is the current strings object i.e. highlighted bold.
2. In the Design window, select the yellow 110m elevation crest string.
3. In the Pit Design toolbar, click Create Road Contour (rcon).
4. If prompted in the Status Bar, select a position outside of the selected perimeter (this indicates the high side i.e. the side on which
to create the crest string).
5. In the Studio 3 (Create Contour) dialog, define the contour elevation as '120', click OK .
6. In the Design window, right-click and select Deselect All Strings (das).
7. Check that the yellow 120m elevation crest string has been created as shown below:
rcon
In the above image the topography wireframe surface has been clipped.
As the 110m elevation ramp now extends beyond the topography surface, no more ramp strings are
required for the design. The remainder of bench 120 is defined by a single crest string at 120m
elevation.
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Designing Toes and Crests For Bench 140
1. Check that trc_pit140 (strings) is the current strings object i.e. highlighted bold.
2. In the View Control toolbar, click Snap to Plane.
3. In the Design window, snap (right-click) to the yellow 120m crest string.
4. While moving the cursor in the Design window, check that the elevation displayed in the Status Bar is Z: 120.000.
5. Select the yellow 120m crest string.
6. In the Pit Design toolbar,click Create Road Berm and click anywhere outside the crest string (to indicate the berm side of the crest
string).
7. In the Design window, right-click and select Deselect All Strings (das).
8. Check that the orange 120m elevation berm string has been created as shown below:
As the 110m elevation ramp now extends beyond the topography surface, no more ramp strings are
required for the design. From here on upwards, the remainder of the pit design only consists of bench
toe and crest strings. These are created up to a elevation (here 240m) so that the final crest is
positioned completely above the surface topography wireframe.
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9. In the View Control toolbar, click Zoom In and view the northern half of the pit.
10. Using the Point and String Editing: Standard toolbar commands Delete Points (dpo) and Move Points (mpo), adjust the toe
string in the north-eastern portion of the pit, outwards to include the ore cells, as indicated by the black dashed line shown below:
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11. Check that you have deleted and moved points, to place the orange toe string in the position shown below:
12. In the View Control toolbar, click Zoom Out.
13. Select the adjusted orange 120m elevation toe string.
14. In the Pit Design toolbar, click Create Road Contour (rcon).
15. Following the prompt in the Status Bar, select a position outside of the selected perimeter (this indicates the high side i.e. the side
on which to create the crest string).
16. In the Studio 3 (Create Contour) dialog, define the Contour Level as '140', click OK .
17. In the Design window, right-click and select Deselect All Strings (das).
18. Check that the yellow 140m elevation crest string has been created as shown below:
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19. Select Format | VR View | Update VR Objects (vro).
20. In the VR window, pan, rotate and zoom the view and note that the additional bench 140 toe and crest strings and their relationship
to the clipped topography surface:
The image above shows the result of constructing bench 140 with just a pair of toe and crest strings.
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Saving the Data
1. Select File | Save.
2. In the Save Data/Set Auto Reload dialog, select to Save the trc_pit140 (strings) object, click OK .
Viewing the Toe and Crest Strings up to 240m Elevation
1. Select the Design window.
2. In the Project Files control bar, Strings folder, drag-and-drop the following file into the Design window:
_vb_trc_pit240
3. In the Sheets control bar, Design Overlays folder, select only the following overlays (i.e. display these overlays):
Default Grid
_vb_trc_pit240 (strings)
_vb_stopotr/_vb_stopopt (wireframe)
_vb_npvmod1 (block model)
4. In the View Control toolbar, click Zoom Extents.
5. Click Use Clipping to toggle clipping OFF.
6. Select Format | VR View | Update VR Objects (vro).
7. In the VR window, pan, rotate and zoom the view and note the additional toe and crest strings and their relationship to the
topography surface:
You can check your design strings against the example file _vb_trc_pit140.dm.
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Top of page
The 110m elevation ramp extends just above the topography surface. From here on upwards, the
remainder of the pit design only consists of bench toe and crest strings up to a elevation of 240m. It is
important that the final crest string is generated so that it lies completely above the topography
wireframe surface.
If you are not happy with the design at any stage, you can erase the incorrect strings and recreate them
using the open pit design commands. The design MUST be restarted from either a toe or crest string,NOT from a road segment.
Copyright © CAE Datamine Corporate Limited
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Overview
In this part of the tutorial you are going to add a new attribute column and set its value for a set of open pit design strings.
Link to Exercises
The following exercises are available on this page:
Adding and Setting a BENCH Attribute Interactively
Exercise: Adding and Setting a BENCH Attribute Interactively
In this exercise you are going to add a user defined BENCH column to the bench strings _vb_trc_pit0 and then set the attribute on the strings
interactively in the Design window. This includes the following tasks:
Defining data and design plane settings
Saving to a new strings file
Adding a new BENCH attribute
Setting the BENCH attribute
Saving the data.
Defining Data and Design Plane Settings
1. Select the Design window.
2. In the Project Files control bar, Strings folder, drag-and-drop the following file into the Design window:
_vb_trc_pit0
3. In the Sheets control bar, Design Overlays folder, select only the following overlays (i.e. display these overlays):
Default Grid
_vb_trc_pit0 (strings)
4. In the View Control toolbar, click Zoom All Data.
A ing an Setting a BENCH Attri ute Adding and Setting a BENCH attribute interactively in the design window
Prerequisites
Required:
Created a new project and added all the required tutorial files i.e. the exercises on the Creating a New Project page.
Loaded and viewed the ultimate pit shell model data i.e. the exercises on the Viewing Ultimate Pit Shell Models page.
Created and applied a custom legend, filtered cells, for the NPVS block model i.e. the exercises on the Creating a Custom
Display Legend page.
Recommended:
Displayed and customized the open pit design toolbars; saved a profile i.e. the exercises on the Displaying Design Toolbars
page. Specified project and mine design settings i.e. the exercises on the Specifying Design Settings page.
Files required for the exercises on this page:
_vb_trc_pit0
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5. In the View Control toolbar, click View Settings.
6. In the View Settings dialog, define the parameters shown below, click OK :
7. In the Design window, check that the two lowest benches of the toe-ramp-crest pit design are displayed, as shown below:
Saving To a New Strings File
1. In the Loaded Data control bar, right-click on the _vb_trc_pit0 (strings) object, select Data | Save As.
2. In the Save New 3D Object dialog, click Single Precision Datamine (.dm) File.
3. In the Save New Strings dialog, select the path to your tutorial folder 'C:/Database/MyTutorials/OPDesign', define the File name: as
'trc_pit0BENCH.dm', click Save.
4. In the Loaded Data control bar, check that _vb_trc_pit0 (strings) has been replaced by trc_pit0BENCH (strings).
5. Check that trc_pit0BENCH (strings) is the current strings object i.e. highlighted bold.
Adding the BENCH Column
1. In the Loaded Data control bar, right-click trc_pit0BENCH (strings), select Add Column.
2. In the Add Column dialog, define the column Name as 'BENCH', Type [Numeric], Default Value [absent(-)], click OK .
Setting the BENCH Attribute
1. In the Design window, select the blue toe, green ramp and yellow crest string for the lowest bench i.e. bench -20 (toe elevation -
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40m, crest elevation -20m).
2. Select Design | Edit Attributes | Edit (eat).
3. In the Edit Attributes dialog, define a BENCH attribute value of '-20', click OK .
4. In the Studio 3 confirmation dialog, click Yes.
5. Repeat steps 1 to 4 for the next three toe, ramp and crest strings, setting a BENCH value of '0'.
6. In the Design window, select individual strings and check the BENCH values displayed in the Data Properties control bar.
Saving the Data
1. Select File | Save.
2. In the Save Data/Set Auto Reload dialog, select to Save the trc_pit0BENCH (strings) object, click OK .
Top of page
The three strings can be selected either by dragging a selection rectangle or by individually selecting the
strings using <Ctrl>+Click.
If you are not happy with the design at any stage, you can erase the incorrect strings and recreate them using the open pit design
commands. The design MUST be restarted from either a toe or crest string, NOT from a road segment.
Copyright © CAE Datamine Corporate Limited
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Overview
In this part of the tutorial you are going to create a DTM wireframe model from a set of untrimmed open pit design strings.
Link to Exercises
The following exercises are available on this page:
Generating a DTM of the Pit Design
Exercise: Generating a DTM of the Pit Design
In this exercise you are going to generate a wireframe surface, using DTM methods, for the untrimmed open pit design strings
_vb_trc_pit240. This includes the following tasks:
Defining data and view settings
Generating the DTM
Saving the DTM to a Datamine file.
Defining Data and View Settings
1. Select the Design window.
2. Select the Project Files control bar, Strings folder.
3. Select, drag-and-drop the following files into the Design window:
_vb_trc_pit240
4. In the Sheets control bar, Design Overlays folder, select only the following overlays (i.e. display these overlays):
Default Grid
_vb_trc_pit240 (strings).
5. In the View Control toolbar, click Zoom All Data.
6. In the View Control toolbar, click View Settings.
7. In the View Settings dialog, define the Section Orientation and Mid-Point XYZ coordinate (6040, 5040, 100) and other parameters
shown below, click OK :
Generating a Pit DTMGenerating a pit DTM
Prerequisites
Required:
Created a new project and added all the required tutorial files i.e. the exercises on the Creating a New Project page.
Recommended:
Displayed and customized the open pit design toolbars; saved a profile i.e. the exercises on the Displaying Design Toolbars
page.
Specified project and mine design settings i.e. the exercises on the Specifying Design Settings page.
Files required for the exercises on this page:
_vb_trc_pit240
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8. In the Design window, check that your view is as shown below:
Generating the DTM
1. In the DTM Creation toolbar, click Create DTM.
2. In the Make DTM - General Options dialog, Output group, select the New Object option, enter the name 'trc_pit240tr'.
3. In the General Options group, clear the Use boundary strings option, click Next>:
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4. In the Make DTM - Select DTM Points and Strings dialog, Objects group, select only [ _vb_trc_pit240 (strings)], click Finish.5. In the Loaded Data control bar, check that the new trc_pit240tr object is listed.
6. Select Format | VR View | Update VR Objects (vro).
7. In the VR window, rotate the view and check that the pit DTM surface correctly follows the pit design strings as shown below:
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Saving the DTM to a Datamine File
1. In the Loaded Data control bar, right-click on the trc_pit240tr object, select Data | Save As.
2. In the Save New 3D Object dialog, click Single Precision Datamine (.dm) File.
3. In the Save New Strings dialog, select the path to you tutorial folder, define the File name: as 'trc_pit240tr.dm', click Save.
4. In the Loaded Data control bar, check that the trc_pit240tr object has been replaced by trc_pit240tr/trc_pit240pt (wireframe).
5. Select File | Save.
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Copyright © CAE Datamine Corporate Limited
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Overview
In this part of the tutorial you are going to create an intersection string for the open pit DTM and topography surface wireframes.
Link to Exercises
The following exercises are available on this page:
Generating a Pit-Topography Intersection String
Exercise: Generating a Pit-Topography Intersection String
In this exercise you are going to generate a new string representing the intersection between the _vb_trc_pit240tr/_vb_trc_pit240pt and the
_vb_stopotr/_vb_stopopt wirerframe objects .This includes the following tasks:
Defining data and view settings
Generating the intersection
Conditioning the string
Saving the intersection string to a Datamine file.
Defining Data and View Settings
1. Select the Design window.
2. Select the Project Files control bar, Wireframe Triangles folder.
3. Select, drag-and-drop the following files into the Design window:
_vb_stopotr
_vb_trc_pit240tr
4. In the Sheets control bar, Design Overlays folder, select only the following overlays (i.e. display these overlays):
Default Grid
_vb_trc_pit240tr/_vb_trc_pit240pt (wireframe)
_vb_stopotr/_vb_stopopt (wireframe).
Generating a Pit-Topograp y IntersectionHow to create a string at the topography and pit wireframes intersection.
Prerequisites
Required:
Created a new project and added all the required tutorial files i.e. the exercises on the Creating a New Project page.
Recommended:
Displayed and customized the open pit design toolbars; saved a profile i.e. the exercises on the Displaying Design Toolbars
page.
Specified project and mine design settings i.e. the exercises on the Specifying Design Settings page.
Generated a pit DTM i.e. the exercises on the Generating a Pit DTM page.
Files required for the exercises on this page:
_vb_trc_pit240pt / _vb_trc_pit240tr
_vb_stopopt / _vb_stopotr
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5. In the Sheets control bar, Design Overlays folder, right-click _vb_stopotr/_vb_stopopt (wireframe), select Format
6. In the Format Display dialog, Overlays tab, Overlay Format group, Style sub-tab, Display As group, check that Faces is selected,
click OK .
7. In the View Control toolbar, click Zoom All Data.
8. In the View Control toolbar, click View Settings.
9. In the View Settings dialog, define the Section Orientation and Mid-Point XYZ coordinate (6190, 5170, 100) and other parameters
shown below, click OK :
10. In the Design window, check that your view is as shown below:
Generating the Intersection
1. Select Wireframes | Boolean Operations | Strings from Intersections .
2. In the Strings from Intersections dialog, select the topography and pit wireframe objects as shown below, click OK :
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3. In the Loaded Data control bar, check that the new strings object Intersection: _vb_stopotr/_vb_stopopt and
_vb_trc_pit240tr/_vb_trc_pit240pt is displayed.
4. In the Design window, select the intersection string.
5. Select Design | Edit Attributes | Edit.
6. In the Edit Attributes dialog, select the COLOUR [(9) Bright Red], click OK .
7. In the Studio 3 'Are you sure ...' confirmation dialog, click Yes.
8. In the Design window, right-click and select Deselect All Strings (das).
9. Check that your red intersection string has been created as shown below:
Conditioning the Intersection String
If you are having difficulty seeing the newly generated intersection string, the pit strings and
topography wireframe overlays can be hidden temporarily.
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1. In the Design window, select the red intersection string.
2. Select Design | Query | Strings (qst), click Cancel.
3. In the Output control bar, note that the string contains 538 vertices.
4. Select Design | Condition | Remove Crossovers (tcr).
5. Select Design | Query | Strings (qst), click Cancel.
6. In the Output control bar, note that the string now contains 523 vertices.
7. Select Format | VR View | Update VR Objects (vro).
8. In the VR window, rotate and zoom the view and check that the red string lies along the intersection of the pit DTM and topography
surface as shown below:
Saving the Intersection String to a Datamine File
1. In the Loaded Data control bar, right-click on the Intersection: _vb_stopotr/_vb_stopopt and _vb_trc_pit240tr/_vb_trc_pit240pt
object, select Data | Save As.
2. In the Save New 3D Object dialog, click Single Precision Datamine (.dm) File.
3. In the Save dialog, select the path to you tutorial folder, define the File name: as 'trc_PitTopoInt.dm', click Save.
4. In the Loaded Data control bar, check that the Intersection: _vb_stopotr/_vb_stopopt and _vb_trc_pit240tr/_vb_trc_pit240pt object
has been replaced by the object trc_PitTopoInt (strings).
5. Select File | Save.
Top of page
Other string conditioning commands (Design |Condition | ...) can be used to perform additional
conditioning e.g. Condition String., to specify minimum and maximum string segment (chord) lengths
and internal angles. In this exercise, no further conditioning is needed for this intersection string.
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Copyright © CAE Datamine Corporate Limited
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Overview
In this part of the tutorial you are going to trim the design strings to topography using the pit-topography intersection string.
Link to Exercises
The following exercises are available on this page:
Trimming the Design Strings
Exercise: Trimming the Design Strings
In this exercise you are going to trim the _vb_trc_pit240 design strings to lie below the topography surface using the _vb_trc_PitTopoInt pit-
topography intersection string. This includes the following tasks:
Defining data and view settings
Generating the intersection
Trimming the design strings
Saving the trimmed design strings to a new Datamine file.
Defining Data and View Settings
1. Select the Design window.
2. Select the Project Files control bar, Wireframe Triangles folder.
3. Select, drag-and-drop the following files into the Design window:
_vb_stopotr
4. Select the Project Files control bar, Strings folder.
5. Select, drag-and-drop the following files into the Design window:
_vb_trc_pit240
Trimming t e Design StringsTrimming the pit design strings against the topography surface
Prerequisites
Required:
Created a new project and added all the required tutorial files i.e. the exercises on the Creating a New Project page.
Recommended:
Displayed and customized the open pit design toolbars; saved a profile i.e. the exercises on the Displaying Design Toolbars
page.
Specified project and mine design settings i.e. the exercises on the Specifying Design Settings page.
Generated a pit DTM i.e. the exercises on the Generating a Pit DTM page.
Generated a pit-topography intersection string i.e. the exercises on the Generating a Pit-Topo Intersection page.
Files required for the exercises on this page:
_vb_trc_pit240
_vb_trc_PitTopoInt
_vb_stopopt / _vb_stopotr
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_vb_trc_PitTopoInt
6. In the Sheets control bar, Design Overlays folder, select only the following overlays (i.e. display these overlays):
Default Grid
_vb_trc_PitTopoInt (strings)
_vb_trc_pit240 (strings)
_vb_stopotr/_vb_stopopt (wireframe).
7. In the Sheets control bar, Design Overlays folder, right-click _vb_stopotr/_vb_stopopt (wireframe), select Format
8. In the Format Display dialog, Overlays tab, Overlay Format group, Style sub-tab, Display As group, check that Faces is selected,
click OK .
9. In the View Control toolbar, click Zoom All Data.
10. In the View Control toolbar, click View Settings.
11. In the View Settings dialog, define the Section Orientation and Mid-Point XYZ coordinate (6190, 5170, 100) and other parameters
shown below, click OK :
12. In the Design window, check that your view is as shown below:
Trimming the Design Strings
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1. In the Design window, select the red intersection string.
2. Select Design | String Tools | Clip to Perimeter.
3. Following the 'Select a point on the deletion side' prompt displayed in the left side of the Status Bar.
4. In the Design window, click anywhere outside the intersection string, click Cancel.
5. Right-click and select Deselect All Strings (das).
6. Check that the pit design strings have been trimmed to only lie inside the red intersection string, as shown below:
7. Select Format | VR View | Update VR Objects (vro).
8. In the VR window, rotate, zoom and pan the view and check that the pit design strings have been trimmed to lie only below the
topography surface:
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Saving the Trimmed Strings to a New Datamine File
1. In the Loaded Data control bar, right-click on the _vb_trc_pit240 (strings) object, select Data | Save As.
2. In the Save New 3D Object dialog, click Single Precision Datamine (.dm) File.
3. In the Save New Strings dialog, select the path to you tutorial folder, define the File name: as 'trc_pit.dm', click Save.
4. In the Loaded Data control bar, check that the _vb_trc_pit240 (strings) object has been replaced by trc_pit (strings).
5. Select File | Save.
Top of page
Copyright © CAE Datamine Corporate Limited
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Overview
In this part of the tutorial you are going to merge the pit and topographic DTMs.
Link to Exercises
The following exercises are available on this page:
Merging the Pit and Topography DTMs
Exercise: Merging the Pit and Topography DTMs
In this exercise you are going to use boolean commands to generate a merged pit and topography wireframe surface using the
_vb_trc_pit240tr/_vb_trc_pit240pt and _vb_stopotr/_vb_stopopt wirerframe objects .This includes the following tasks:
Defining data and view settings
Merging the pit and topography DTMs
Saving the merged wireframe object to a Datamine File.
Defining Data and View Settings
1. Select the Design window.
2. Select the Project Files control bar, Wireframe Triangles folder.
3. Select, drag-and-drop the following files into the Design window:
_vb_stopotr
_vb_trc_pit240tr
4. In the Sheets control bar, Design Overlays folder, select only the following overlays (i.e. display these overlays):
Default Grid
_vb_stopotr/_vb_stopopt (wireframe).
_vb_trc_pit240tr/_vb_trc_pit240pt (wireframe)
5. In the Sheets control bar, Design Overlays folder, right-click _vb_stopotr/_vb_stopopt (wireframe), select Format
Merging t e Pit an Topograp y DTMsCombining the pit and topography
Prerequisites
Required:
Created a new project and added all the required tutorial files i.e. the exercises on the Creating a New Project page.
Recommended:
Displayed and customized the open pit design toolbars; saved a profile i.e. the exercises on the Displaying Design Toolbars
page.
Specified project and mine design settings i.e. the exercises on the Specifying Design Settings page.
Generated a pit DTM i.e. the exercises on the Generating a Pit DTM page.
Files required for the exercises on this page:
_vb_stopopt / _vb_stopotr
_vb_trc_pit240pt / _vb_trc_pit240tr
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6. In the Format Display dialog, Overlays tab, Overlay Format group, Style sub-tab, Display As group, check that Faces is selected,
click OK .
7. In the View Control toolbar, click Zoom All Data.
8. In the View Control toolbar, click View Settings.
9. In the View Settings dialog, define the Section Orientation and Mid-Point XYZ coordinate (6190, 5170, 100) and other parameters
shown below, click OK :
10. In the Design window, check that your view is as shown below:
Merging the Pit and Topography DTMs
1. Select Wireframes | Boolean Operations | Extract Separate.
2. In the Extract Separate dialog, select the topography (object 1) and open pit (object 2) wireframe objects.
3. Clear both Verify check boxes.
4. Select the Output group options, check the other highlighted options, click OK :
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5. In the Loaded Data control bar, check that the new Extract: _vb_stopotr/_vb_stopopt and _vb_trc_pit240tr/_vb_trc_pit240pt object
is listed.6. In the Sheets control bar, Design Overlays folder, select only the following overlays (i.e. display these overlays):
Default Grid
Extract: _vb_stopotr/_vb_stopopt and _vb_trc_pit240tr/_vb_trc_pit240pt.
7. In the Design window, check that your merged wireframe object is as shown below:
8. Select Format | VR View | Update VR Objects (vro).
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9. In the VR window, rotate, zoom and pan the view and check that the merged wireframe consists of a green topography surface
outside the pit and an orange pit surface inside the topography:
Saving the Merged Wireframe Object to a Datamine File
1. In the Loaded Data control bar, right-click on the Extract: _vb_stopotr/_vb_stopopt and _vb_trc_pit240tr/_vb_trc_pit240pt object,
select Data | Save As.
2. In the Save New 3D Object dialog, click Single Precision Datamine (.dm) File.
3. In the Save New Strings dialog, select the path to you tutorial folder, define the File name: as 'trc_PitTopotr', click Save.
4. In the Loaded Data control bar, check that the Extract: _vb_stopotr/_vb_stopopt and _vb_trc_pit240tr/_vb_trc_pit240pt object has
been replaced by trc_PitTopotr/trc_PitTopopt (wireframe).
5. Select File | Save.
Top of page
In the above wireframe extraction and merging process, the following wireframe surface portions were
not retained :
pit above the topography
topography inside the pit.
When running this command, it may be necessary to run it a number of times before the desired result
is obtained.
Copyright © CAE Datamine Corporate Limited
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Overview
In this portion of the tutorial you are going to evaluate a pit design wireframe using a grade block model.
Link to Exercises
The following exercises are available on this page:
Evaluating the Pit Design Wireframe and Grade Block Model
Exercise: Evaluating the Pit Design Wireframe and Grade Block Model
In this exercise you are going to evaluate the pit design wireframe _vb_trc_pittopotr/ _vb_trc_pittopopt using the grade block model _vb_mod1. Thisincludes the following tasks:
Defining data and view settings
Creating an evaluation legend
Applying the evaluation legend
Defining evaluation settings
Evaluating the pit
Saving the results to a Datamine file
Checking the evaluation results.
Defining Data and View Settings
1. Select the Design window.
2. In the Project Files control bar, Strings folder, drag-and-drop the following file into the Design window:
_vb_pitmod1
_vb_trc_PitTopotr
Eva uating t e Pit Design Wire rameEvaluating a pit design wireframe and grade block model
Prerequisites
Required:
Created a new project and added all the required tutorial files i.e. the exercises on the Creating a New Project page.
Loaded and viewed the ultimate pit shell model data i.e. the exercises on the Viewing Ultimate Pit Shell Models page.
Recommended:
Displayed and customized the open pit design toolbars; saved a profile i.e. the exercises on the Displaying Design Toolbars page.
Specified project and mine design settings i.e. the exercises on the Specifying Design Settings page.
Generated a pit DTM i.e. the exercises on the Generating a Pit DTM page.
Files required for the exercises on this page:
_vb_pitmod1
_vb_npvssurfpt / _vb_npvssurftr
_vb_trc_pittopotr/ _vb_trc_pittopopt
When using QUICKPIT you must always start with a closed string that represents a toe, pit base or pit top.
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3. In the Sheets control bar, Design Overlays folder, select only the following overlays (i.e. display these overlays):
Default Grid
_vb_npvssurftr/_vb_npvssurfpt (wireframe)
_vb_trc_pittopotr/ _vb_trc_pittopopt (wireframe)
_vb_pitmod1 (block model)
4. In the Loaded Data control bar, unload all other block model objects.
5. Check that _vb_pitmod1 is the current block model object i.e. highlighted bold.
6. In the Sheets control bar, Design Overlays folder, right-click _vb_trc_pittopotr/ _vb_trc_pittopopt (wireframe), select Format.
7. In the Format Display dialog, Overlays tab, Overlay Format group, Style sub-tab, Display As group, select Intersection, click Apply.
8. In the Color sub-tab, Line Style group, select the Fixed linestyle [ ____
], and set Width to [2], click OK .
9. Repeat steps 6 to 8 for _vb_npvssurftr/_vb_npvssurfpt (wireframe), setting the color to Red (2).
10. In the View Control toolbar, click Zoom All Data.
11. In the View Control toolbar, click View Settings.
12. In the View Settings dialog, define the Section Orientation and Mid-Point XYZ coordinate (X: 6000) parameters shown below, click OK :
13. In the View Control toolbar, click Zoom In.
14. In the Design window, drag a zoom rectangle to display the view extents shown below:
In the above image, the red intersection line defines the ultimate pit limits and the orange the design pit limits.
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Creating an Evaluation Legend
1. In the Sheets control bar, Design Overlays folder, right-click _vb_pitmod1 (block model), select Quick Legend.
2. In the Quick Legend dialog, define the settings shown below, click OK :
3. Select Format | Legend.
4. In the Legends Manager dialog, expand the Project Legends folder.
5. Expand the newly created Evaluation Legend 1 legend and check that it contains the legend items shown below:
6. Right-click the legend item [ABSENT], select Delete.
7. Check that you have three remaining legend items.
8. Right-click the first remaining legend item, select Edit.
9. In the Legend Item Properties dialog, Item Description group, clear Automatically generate description.
10. Type in the Description 'Waste'.
11. Select the Item Type Range, select the minimum [Absent] and define the maximum as '0.5'.
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12. In the Item Format group, set the Fill Color to [(6) Cyan].
13. Select the Use fill for line color option.
14. Click OK .
15. Back in the Legends Manager dialog, select the second remaining legend item and using steps 8 to 14 above, define the following:
Description 'Stockpile'.
Select the Item Type Range, define the minimum as '0.5' and the maximum as '1.0'.
In the Item Format group, set the Fill Color to [(5) Green].
Select the Use fill for line color option.
16. Back in the Legends Manager dialog, select the second remaining legend item and using steps 8 to 14 above, define the following:
Description 'Mill'.
Select the Item Type Range, define the minimum as '1.0' and select the maximum [Ceiling].
In the Item Format group, set the Fill Color to [(2) Red].
Select the Use fill for line color option.
17. Back in the Legends Manager dialog, check that your modified legend is as shown below:
18. Click Close.
19. Select Design | Redraw.
20. In the Design window, check that the block model has been colored on AU as shown below:
Defining Evaluation Settings
1. Select File | Settings.
2. In the Project Settings dialog, select the Mine Design tab.
3. In the Evaluation Control group, define the settings shown below, click OK :
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Evaluating the Pit
1. In the View Control toolbar, click View Settings.
2. In the View Settings dialog, Section Orientation group, select Horizontal, click OK .
3. Select Models | Evaluate | Wireframe (evw).
4. In the Evaluate Wireframe dialog, select the design pit _vb_trc_pittopotr/ _vb_trc_pittopopt (wireframe) object, define the parameters
shown below, click OK :
5. In the Studio 3 Block Identifier dialog, define the Mining Block Identifier as '1', click OK .:
6. In the Accept Evaluation Results dialog, check the results, click Yes.
7. In the Loaded Data control bar, check that a new Results object is listed.
8. Repeat steps 2 to 4 for the ultimate pit _vb_npvssurftr/_vb_npvssurfpt (wireframe) object, using a Mining Block Identifier value of '2'.
Saving the Results to a Datamine File
1. In the Loaded Data control bar, right-click on the RESULTS object, select Data | Save As.
2. In the Save New 3D Object dialog, click Single Precision Datamine (.dm) File.
3. In the Save New Strings dialog, select the path to you tutorial folder, define the File name: as 'Res_DesignPit1', click Save.
4. In the Loaded Data control bar, check that the RESULTS object has been replaced by the object Res_DesignPit1(table).
5. Right-click , Res_DesignPit1(table) , select Data | Unload.
Models | Evaluate | Use Model Data (umd) could also be used to set evaluation to using block model data.
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Checking the Evaluation Results
1. In the Project Files control bar, expand the All Tables or Results follder.
2. Double-click Res_DesignPit1.
3. In the Datamine Table Editor dialog, check the string point coordinates and color values, select File | Exit :
4. Back in Studio 3, select File | Save.
Top of page
Unloading the results table ensures that any future evaluations are saved to a new RESULTS object.
You can check your evaluation results against the example _vb_res_designpit1.
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