SLOPE/WSlope Stability Analysis

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downrightRapid Drawdown

Rapid drawdown analysis can

be conducted using the pore-

water pressures defined using

piezometric lines, transient

finite element GeoStudio

analyses, or the multi-stage

rapid drawdown technique.

layergroupMaterial Models

SLOPE/W supports a

comprehensive list of material

models including Mohr-Coulomb,

undrained, high strength,

impenetrable, bilinear, anisotropic

strength, SHANSEP, spatial

Mohr-Coulomb and more.

scaledownLimit State DesignLimit state design or load

resistance factor design is handled

by specifying partial factors on

permanent/variable loads, seismic

coefficients, material properties,

reinforcement inputs and more.

dropPore-Water PressurePore-water pressures can be

defined using piezometric lines,

spatial functions, or the results

from other GeoStudio finite

element analyses. Values can

be displayed as contours on

the geometry to reveal PWP

values used in the analysis.

With this comprehensive range of features, SLOPE/W can be used to analyze almost any slope stability problem you will encounter in

your geotechnical, civil, and mining engineering projects.

SLOPE/W effectively analyzes both simple and complex problems for a variety of slip surface shapes,

pore-water pressure conditions, soil properties, analysis methods and loading conditions.

Eurocode Design CaseSLOPE/W can be used to complete a stability analysis with the objective

being to check an ultimate limit state in accordance with various limit state

design approaches such as Eurocode 7, Norwegian Standard NS 3480,

and British Standard 8006. The stability analysis is completed with partial

factors applied to characteristic loads and soil strength parameters.

Stability of an MSE WallMechanically stabilized earth (MSE) walls are structures for

retaining the earth under bridges, highways, and waterfront

properties, to name a few. Designing a MSE wall requires

consideration of the geometric configuration and reinforcement

requirement to ensure both internal and external stability.

Reinforcement with Soil NailsThe purpose of this illustrative example is to show how soil nails can

be used to improve the stability of a slope. Features of this simulation

include: Morgenstern-Price analysis method, homogenous material using

the Mohr Coulomb soil model, a dry slope with no pore-water pressure,

four sloping soil nails, and the entry and exit slip surface option.

James Bay Case HistoryThis article looks at the SLOPE/W probabilistic analysis capabilities

relative to the James Bay hydroelectric project. It required the

construction of fifty kilometers of dykes on soft and sensitive clay.

Divergent views were prevalent regarding the selection of safety

factors and strength properties. The project has consequently

become an important and often-cited case history.

SEEP/W results in SLOPE/W

Using SEEP/W finite element pore-water

pressures in SLOPE/W makes it possible to deal

with complex saturated/ unsaturated conditions

or transient pore-water pressure conditions.

From a transient analysis, we know the pore-

water pressure conditions at various points

in time. Using these time- varying pore-water

pressure results in SLOPE/W makes it possible

to look at the changes in stability with time.

SIGMA/W stresses in SLOPE/W

There are many geotechnical cases where it

is desirable to not only perform a deformation

analysis, but also to look at stability. In other

instances, a SLOPE/W limit equilibrium stability

analysis alone is inadequate. For cases like this,

the SIGMA/W computed stresses can be used

in SLOPE/W to compute the safety factors.

VADOSE/W results in SLOPE/W

Using VADOSE/W computed pore-

water pressures in SLOPE/W makes it

possible to model the effects of climate-

controlled, net infiltration on stability.

QUAKE/W results in SLOPE/W

Earthquake shaking of ground structures

creates inertial forces that may affect the

stability of the structures. The shaking may also

generate excess pore-water pressures. Both the

dynamic stress conditions and the generated

pore-water pressures can be taken into

SLOPE/W to study how an earthquake affects

the earth structure stability and deformation.

SLOPE/W can model a comprehensive range of stability problems

SLOPE/W offers simple but powerful analytical capabilities when used in combination with other GeoStudio products.

Create problem workspace and analysis properties

navigatedownDraw or import domain regions from a CAD program

navigatedownDefine material properties and pore-water pressure

navigatedownDefine loading conditions and reinforcement

navigatedownDefine a set of trial slip surfaces

navigatedownSolve your analyses

navigatedownDisplay computed slip surfaces as a color map

navigatedownView slip surface details, generate plots and reports

SLOPE/W’s intuitive modeling workflow