PowerPoint Presentation · Method & Equipment between 1980 & 1985 ... PWIK w Glogowie Sp. z.o.o....

24-Oct-17

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www.ukstt.org.uk

Pipe Bursting & Keyhole

Technology for Water

Rehabilitation

Matthew Izzard

(Business Development Director – Tracto Technik UK)

(Vice Chairman UKSTT)

www.tracto-

technik.co.uk

Pipe Replacement Techniques:

Static Pipebursting Dynamic Pipe Bursting

Pipe Extraction /

Pulling

Insertion

www.ukstt.org.uk www.tracto-

technik.co.uk

A Brief History of Pipe Bursting:


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• Developed in Late 1970’s by D J Ryan & British Gas

• Patents granted Worldwide for both Method & Equipment between 1980 & 1985

• Originally used for Gas Main replacement

• Since adopted for Water & Sewer Replacement

Courtesy Norman Howell Associates


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Only trenchless process where it is possible to replace size for size or upsize

an existing pipe.

Pipe material – old pipe or new pipe generally ‘irrelevant’ in terms of process.

Pipe Bursting Technique & Applications:

Applications:

Gas

Clean Water *Dynamic pipe bursting exhaust

Sewer, including gravity Drainage

Insertion (Tight Fit) Re-rounding

Cleaning

Both static & dynamic bursting can be ‘stop – start’ process.

Ground has to be physically displaceable.


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Pipe Bursting Technique & Applications:

Considerations that may Prevent the Successful Operation of the Technique:

• Proximity for Other Utility Services

• Repair Fittings & Clamps

• Reinforced Concrete Pipes

• Concrete Beds

• Concrete Bed & Surrounds

• Substantial Quantities of Concrete adjacent to the Pipeline at Connections & Chambers

Pipe Bursting Design & Risk

Mitigation:


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Site Access & Layout:

Static Equipment: Rig, Rod Packs, Power Pack, Hoses, Tooling

Dynamic: Hammer, Winch, Compressor, Hoses, Tooling

Pipe entry point & method – Coil, sticks or sections

100m lengths typical on smaller diameters generally based on pe coils.

1200mm Diameter possible based on upsize, ground conditions and power of

equipment.

Fast replacement speed – better for consumers as shorter streetworks and

disruption but longer disconnection time.

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Mitigation:


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Ground Heave: Displacement factor critical when ‘expanding’ – Effects

around 10 x diameter of upsize in surrounding ground.

Pipe Wall Damage & Drag: Expander selection guideline 20% larger than final

pipe, bentonite fluid option to reduce friction & stablise fragments.


Mitigation:


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(INS) (MM) 90 125 180 200 250 315 355 400 450 500 560 630 710 800

4 100 u u

6 150 u u u u

9 225 u u u u u

12 300 u u u u u u

15 375 u u u u u

18 450 u u u u

21 525 u u u

24 600 u u u

EXISTING PIPE

SIZENEW PIPE (OD) IN MM

Ground Conditions:


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Cohesive Soils • Firm to Soft Clays: Ideal • Hard Clays: Greater Bursting Power is needed to Achieve

Required Soil Compaction

Non-Cohesive Soils • Dry Sand: Most Difficult Conditions • Wet Sand: Provides Problems for Hydraulically Powered

Machines

Rock: Limits Upsizing Capabilities

Ground Water: High Water Tables can cause problems for both Pneumatically & Hydraulically Powered Machines

Pipe Replacement Options:


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Pipe Strings • Polyethylene Pipes

• Steel

Short Length Pipes

• Polyethylene

• Polypropylene

• UPVC

• Clayware Pipes

Static Pipe Bursting:


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Static Pipe Bursting:


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Nominal Diameter OldPpipe Minimum Static Pipe

Bursting Rig

≤ ND 250 400 G/S

275 / 400 kN

> ND 250 - ≤ ND 400 800 G

256 / 769 kN

> ND 400 - ≤ ND 600 1250 G/CP

395 / 1272 kN

> ND 400 - ≤ ND 800 1900 G

716 / 1900 kN

> ND 600 - ≥ ND 1000 2500 G

1055 / 2550 kN


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Pipe Bursting Rig Size Selection:

Threaded Rods:


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QuickLock Rods:


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Cable / Chain Systems:

• Typically used on laterals

• Service splitting

• Smaller Diameter pipes – 160mm

• Good for bends up to 45 degrees

• Pull distances typically 50m

• Versatile and portable

Old Pipe

Expander with blade

ledges

New Pipe

Rods

Static Bursting Principle:


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Old Pipe

Static Pipe Bursting

Rollerblade Hook knife Bursting head

Grey cast iron pipes X X

Ductile cast iron pipes X

Steel pipes X

PE / PP pipes X

PVC pipes X

Asbestos / fibre cement pipes

X

Vitrified clay pipes X

Concrete / reinforced concrete pipes

X X

GFRP pipes X

Brickwork X

Inliners X X

Bursting Techniques for Pipe Material:


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Roller Blade - Ductile Cutter - PE

Delta Blade - Brittle Bursting Head / Expander - Brittle


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Receiving Pit & Pull Back:


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Static Pipe Bursting: “Stitching”


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Location: Kiruna (North of Sweden)

Existing pipe: Ductile Iron ID 500 with inner cement coating

New pipe: PE OD 500; SDR 17; PE 100

Length: 245 m (1 x 120 and 1 x 125 m)

Duration: 2 days

Depth: 3 – 5 meters

Contracting authority: Kiruna komun

Contractor: Oden


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GRUNDOBURST 1250: KIRUNA, SWEDEN


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Machine Pit Reception Pit www.ukstt.org.uk www.tracto-

technik.co.uk


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Roller blade

for ID 500

mm

Expander OD

550 with

blades

PE link

OD 500 mm

with

connection

PE pipe

OD 500 x

29,7


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GRUNDOBURST 2500G: GLOGOW, POLAND

Location: Glogow in Poland

Existing pipe: Cast Iron ID 500 with inner cement coating

New pipe: PE OD 500 mm with outer PP protection coating

Length: 170 m

Depth: 2 – 2,5 meters

Contracting authority: PWIK w Glogowie Sp. z.o.o.

Contractor: ZISBD

Speciality: Usage of GRUNDOLOG 1250kN to measure the tensile forces on the new installed pipe


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Poland


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Tensile strength

measuring with

GRUNDOLOG



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GRUNDOBURST 2500G GLOGOW / POLAND


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Data Logging & Load Sensing:


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Data Logging & Load Sensing:


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Keyhole Hole Operation – Sewer Rehab:


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../../../../Eigene Dateien/Daten TT/Freimuth/Dokumentationen/Regelwerke/Zugkräfte PE 100 aus DVGW GW 323.pdf

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Grundoburst 400S – Lisvane, Cardiff: May 2017

Client: Welsh Water

Contractors: Lakewell Utilities

Date: 3rd May 2017

Length: 23 meters

Existing pipe: 150mm Clayware

Access: Both Chambers 1200mm dia. Upstream 5 meters deep, Downstream 3.5 meters deep.

Pipe Condition: partially collapsed / blocked, causing occasional upstream overflow / flooding.

Replace with: 160mm dia, 750mm long Demco screw together short section pipe.


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Upstream Chamber:

Demco pipe drawn in from

this Chamber with Spanfix

Downstream Chamber:

Grundoburst launch pit


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Upstream

Chamber

Downstream

Chamber

(Launch Chamber)


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Equipment set up and Quicklock Rods pushed into receiving Chamber in 1.5 hours


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Equipment all on one trailer & vehicle


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Short section pipes, clamped together with Spanfix tensioning system


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Bursting Head arrives in

the Chamber pulling the

new 160mm dia pipe

Due to the restricted working

area, it would have been quicker

to use snap together short

section pipes rather than screw

together. This was recommend

by Tracto Technik UK.


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Bursting Head and tooling

dismantled leaving the new

sewer pipe


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Dynamic Pipe Bursting:


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Winch rope Front Expander Broken Shards

Of Old Pipe

New PE-HD GRUNDOCRACK Old Pipe

Brittle pipes only! *reinforced concrete


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Project example:


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Old Pipe Dynamic

Bursting Process

Stoneware (Stz) X

Concrete (B) X

Cast Iron (GG) X

Polyvinylchlorid (PVC) X

Fibre Cement (FZ) X

Asbestos-Cement (AZ) X

Masonry Channels X

Stahl (St) X (conditioned)

Polyethylene (PE),

Polypropylene (PP) X (conditioned)

Fibre Glass Reinforced

Plastic(GRP) -

Ductile Cast Iron (GGG) -

Already Rehabilitated

Pipelines(Liner) -


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Project example:


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Pipe replacement project(s)using Tracto Technik’s Hercules pipe cracking

equipment for the replacement of an existing 10” AC sewer pipe to a 280mm HDPE

pipe in the city of Riyadh, Saudi Arabia

Client: City of Riyadh Water and Sewerage Dept

Main Contractors: Bin Jarallah Est.

Depth of old/existing

10”AC sewer line (various): 2.8 – 3.0 metres

Existing ground conditions: Dry, loose sand with small stone

Project example:


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Project example:


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Project example:


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Dynamic Pipe Bursting: Keyhole


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Project example:


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Project example:


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Project example:


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Dynamic Pipe Bursting: Keyhole


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HDD Pipe Bursting:


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Site Location

8-ft

Collaps

e

Courtesy Staheli Trenchless Consultants

HDD Pipe Bursting:


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Existing Pipe: Combined Sewer 8-inch VCP

Collapse caused 6-ft diameter void.

Pipe 25-ft below pavement

Groundwater Table: •West End: 10-ft above existing 8-in VCP

•East End: 2-ft below

130’ Distance


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OPTION 1:OPEN TRENCH RE-ROUTE

Open Trench - Risk Probability Impact Risk Factor

Dewatering Requiring Deep Wells or Well

Points 5 3 15

Gradient Causing Non-Efficient Installation 6 1 6

Deep Excavation Affecting Ability to

Safely/Efficiently Shore 2 2 4

Complications due to Poor Existing

Infrastructure 2 1 2

Legal Implications (Shed/Fence Re-Location) 7 3 21

Cumulative Risk Score 48 Courtesy Staheli Trenchless Consultants

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OPTION 2B: PIPE BURSTING

Pipe Bursting - Risk Probability Impact Risk Factor

Dewatering Requiring Deep Wells or Well Points 2 2 4

Getting Stuck 1 5 5

Excessive Alignment Deviations 1 1 1

Complications due to Poor Existing Infrastructure 3 1 3

Settlement/Heave of WSB pavement 1 5 5

Legal Implications (Shed/Fence Re-Location) 1 3 3

Cumulative Risk Score 21 Courtesy Staheli Trenchless Consultants

HDD Pipe Bursting:


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HDD Rig set back : 40ft Courtesy Staheli Trenchless Consultants

HDD Pipe Bursting:


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Today & Tomorrow…

Water Pipelines

No joints: Provides long term leakage benefits.

Standard pipe materials are used which allows new Connections to be fitted easily.

No pre-cleansing required.

Minimal disruption to customers during installation works.

Can be operated from within existing manholes.

Can be used to replace pumping mains.

Substantial time saving possible on projects.


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Today & Tomorrow…

• Pipe capacity can be maintained or increased.

• A new pipe is provided with a 50 year asset life.

• Improved safety for operatives and the public due to

reduced open excavation.

• Direct cost savings due to reduced excavation, backfill and

reinstatement.

• Indirect cost savings as social & traffic disruption are

minimized.

• Reduced risk of damage to other utility plant.

Today & Tomorrow…


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Natural resources are Conserved & the impact on

the environment is less due reduced need for

quarried materials.

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Thank you for your time…

Matthew Izzard

T: 01234 342566 M: 07778 888844

E: [email protected]

www.pipe-bursting.co.uk www.ukstt.org.uk www.tracto-

technik.co.uk

Handbook of Pipe Bursting Practice

• Pipe bursting terms and

application range

Host pipe and new pipe materials

Planning and design guidelines

Pipe Bursting equipment and

accessories

Jobsite reports

mailto:[email protected]



PowerPoint Presentation · Method & Equipment between 1980 & 1985 ... PWIK w Glogowie Sp. z.o.o....

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