Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three...

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TRENCHLESS TECHNOLOGY ROADSHOW May 28-29, 2014 – Scotiabank Convention Centre, Niagara Falls, ON Short Drive Microtunnelling (MTBM)

Transcript of Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three...

Page 1: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

TRENCHLESS TECHNOLOGY ROADSHOW

May 28-29, 2014 – Scotiabank Convention Centre, Niagara Falls, ON

Short Drive

Microtunnelling (MTBM)

Page 2: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

Founded in Streetsville Ontario in 1947

Specialize in Large Diameter:

Microtunnelling

Auger Boring

Pipe Ramming

HDD – Horizontal Directional Drilling

Pipe Bursting

Hand Mining

Right Sized Trenchless Technologies

Engaged Partner in all Aspects of the Trenchless Industry CATT, NASTT, OHDDA, Industry Lectures and Seminars, Trenchless Design Consultation, Project Post Mortem

Earth Boring Co. Limited

Trenchless Since 1947

Page 3: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

In microtunelling hydraulic jacks are used to push pipes

through the ground behind a shield at the same time as

excavation is taking place within the shield.

MTBM provides a flexible, structural, watertight, finished

pipeline as the tunnel is excavated.

Microtunnelling – MTBM

Page 4: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

Slurry machines belonging to the category of closed, full face

excavation machines with a hydraulic slurry circuit.

The soil to be excavated is removed using a cutterhead adapted to the

respective geology. This makes it possible to use the machines in

almost all geological conditions.

In soft soils and mixed geologies, standard or mixed ground

cutterheads are used, while a rock cutterhead with disc cutters is used

for tunnelling in stable rock formations.

Microtunnelling – MTBM

Page 5: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

A cone-shaped crusher inside the excavation chamber crumbles stones

and other obstructions to a conveyable grain size while tunnelling and

advancing.

Afterwards, the material falls through openings similar to a strainer in

front of the suction port and is then removed through the slurry line

together with the slurry suspension

Microtunnelling – MTBM

Page 6: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

Complex Ground Conditions –

Mixed Face

Wet Soils, Ravelling Face

Cobbles, Boulders

Rock

Long Drives (IJS)

Range of Pipe Diameter

Microtunnelling – MTBM

Suited For:

Sounds like it’s the panacea! Why aren’t we doing this on all our projects?

Page 7: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

Cost & Risk

Microtunnelling – MTBM

So Why Isn’t It the Only Choice?

Page 8: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

Cost 2.5x Auger Boring

2-3x HDD

1.5x Pipe Ramming Comparatively the above are generally constrained in one fashion

or another by soils, diameter of product pipe and length

Microtunnelling – MTBM

So Why Isn’t It the Only Choice?

So cost would limit the selection of MTBM over the other methods

Page 9: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

Risk Time

Hwy, Railway

Soils, challenging, unknown

Environment, rivers, wetlands, Fisheries Window

Subsidence

Limiting the potential unknown

Limiting Potential Schedule Over-runs

Microtunnelling – MTBM

So Why Isn’t It the Only Choice? Risk begins to bring the palate for cost back in line

Page 10: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

Short Run Trenchless Projects May Not SEEM to make

sense

Cost Quantum

In Short, It’s an Expensive Venture

Suited for Longer

Microtunnelling – MTBM

So Why Isn’t It the Only Choice?

Page 11: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

Mobilization

Drive

De-Mobilization

MTBM - Three Main Elements to the Drive

Outside of planning and design, project closeout

Page 12: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

MTBM - Three Main Elements to the Drive

Hand Mine

HDD Auger Bore

Pipe Ram

MTBM

Set-Up 1 2 2 2 7

Drive 20 5 8 10 3

De-Mob 1 2 2 2 4

Duration 22 9 12 14 14

All things being equal Soils, Diameter, Distance 900mm, 30m, Alluvial

Hand Mine and MTBM in line for costs Most economical would be HDD Auger Bore is another suitable choice Pipe Ram 2.5x the AB Price

Page 13: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

MTBM - Three Main Elements to the Drive

Hand Mine

HDD Auger Bore

Pipe Ram

MTBM

Set-Up 1 2 2 2 7

Drive 20 5 8 10 3

De-Mob 1 2 2 2 4

Duration 22 9 12 14 14

Soils, Diameter, Distance 900mm, 50m Under a River Soils are not cohesive & unknown under River 0.1% Grade

Hand Mine and MTBM in line for costs Most economical would be HDD Auger Bore is another suitable choice Pipe Ram 2.5x the AB Price Length – Conservation Authority has asked that the limits be moved outside flood

area HDD still possible, up to 1000m. But not at fine grades Auger Bore – soils limitations, outside end of viable length, need to upsize liner Pipe Ram – same as auger bore, but no grade or line control

Page 14: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

MTBM - Three Main Elements to the Drive

Hand Mine

HDD Auger Bore

Pipe Ram

MTBM

Set-Up 1 2 2 2 7

Drive 20 5 8 10 3

De-Mob 1 2 2 2 4

Duration 22 9 12 14 14

Soils, Diameter, Distance 900mm, 50m Under a River Soils are not cohesive & Unknown under River 0.1% Grade

Length – Conservation Authority has asked that the limits be moved outside flood area HDD still possible, up to 1000m. But not at fine grades Auger Bore – soils limitations, outside end of viable length, need to upsize liner Pipe Ram – same as auger bore, but no grade or line control

No system movement for grade adjustment Adjustment to construction sequence places this component on critical path

Conservation Authority Limits of Approach Windows

Encroachment Permit Limits Issue Resolution

Page 15: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

MTBM - Risk Drives Utilization of Short

Distance MTBM

But what constitutes a short drive MTBM?

150m or Less Economies of Scale when

Compared to Standard Tunnel & Considering Other Standard

Trenchless Operations

Page 16: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

2nd Concession 120m Gravity Sewer 1200mm Holland River Wet Running Sand and Cobbles Concrete Obstruction Existing Structures Other Trades on Site Initially HDD CHANGE SOILS River

Page 17: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

OPG Darlington 72m x 1500mm Steel Liner Un-Cohesive Soils Unknown Soils under railway Hi Speed Railway Corridor Designed as Auger Bore Change Soils Risk Railway Unknown Soils

Page 18: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

OPG Darlington 72m x 1500mm Steel Liner Un-Cohesive Soils Unknown Soils under railway Hi Speed Railway Corridor Designed as Auger Bore Change Soils Risk Railway Unknown Soils

Page 19: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

Region of Peel 2 x 1200mm RCP 30m & 40m Solid Shale Bedrock w Limestone Stringers Environmental Crossings Lakeshore Rd & Dixie Busy Thoroughfare Risk Time Environmental

Page 20: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

Region of Peel 2 x 1200mm RCP 30m & 40m Solid Shale Bedrock w Limestone Stringers Environmental Crossings Lakeshore Rd & Dixie Busy Thoroughfare Risk Time Environmental

Page 21: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

Region of Peel 2 x 1200mm RCP 30m & 40m Solid Shale Bedrock w Limestone Stringers Environmental Crossings Lakeshore Rd & Dixie Busy Thoroughfare Risk Time Environmental

Page 22: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

Region of Peel 1200mm RCP 110m Solid Shale Bedrock Environmental Crossings Erin Mills Parkway Had to hit existing shaft Risk Time Accuracy Environmental

Page 23: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

Region of York 1200mm RCP 2 x 130m Alluvial Soils Environmental Crossings Risk Time Accuracy Environmental

Page 24: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

Short Drive MTBM - Design Considerations

• ROW – Set-Up, MTBM Retrieval • Vehicle Access – Spoils Management • OH Wires • Soils • Balance Soils, Distance, Diameter w/ cost/quality &

schedule • Demonstrated Experience

Soils Distance Diameter Cost Quality Schedule

Page 25: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

MTBM - Conclusion

Myriad of Factors Influence Trenchless Technology Selection Key Factors are

• Soil, Diameter and Distance Driving Factors in our Experience?

• Cost • Risk

There is a growing market for short Drive MTBM It is defined and will continue to be defined by the ability and desire to mitigate risk

Page 26: Short Drive Microtunnelling (MTBM) - CATTcattevents.ca/pdf/TRS_ses1_Woodbridge.pdf · MTBM - Three Main Elements to the Drive Hand Mine HDD Auger Bore Pipe Ram MTBM Set-Up 1 2 2 2

Gene Woodbridge

Earth Boring Co. Ltd.

www.earthboring.ca

(905) 277-9632

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