Trenchless method in Japan - GCUS | Global Center for...
Transcript of Trenchless method in Japan - GCUS | Global Center for...
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TrenchlessNew Installation & Rehabilitation
in Japan
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Contents1. Why trenchless?
-For New Installation
2. What is Micro Tunneling?
3. What is Shield Tunneling with segment lining?
-For Rehab
4. What is Cured in Place Pipe(CIPP)?
5. What is Spirally Wound Pipe(SWP)
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Why Trenchless? Less disturbing to society
No need relocation of other utility lines
Possible to cross rivers, railways and highways
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What is Micro Tunneling?
Drive Shaft
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Installation of Boring machine
Source: Japan Microtunneling Association
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Drive Shaft
Pushing by jacking(red one)
Installation Jacking pipe
Source: Japan Microtunneling Association
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7
Pipe
Thrust ring
Jacking rig
Exit eye
Drive Shaft
Source: Japan Microtunneling Association
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Reception Shaft and completion
Backfill Grouting
Reception Shaft
Source: Japan Microtunneling Association
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Source: Environmental Planning Bureau, Yokohama City
Diameter 4000mm (micro tunneling ) in Yokohama City
Jacking Pipe
(external diameter 4600mm)
Tunnel Boring Machine
Construction Period: From 2009 to 2011
Length: 320m
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Source: Environmental Planning Bureau, Yokohama City
Diameter 4000mm (micro tunneling ) in Yokohama City
Jacking at drive shaft Inside
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What is Micro Tunneling?
Reception
Shaft
Drive
Shaft
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Vietnamese Trainees, Japan, February 26 to March 10, 2012
LectureSite Visit of
Micro tunneling Method
Source: Sewerage Business Management Centre
Training on Micro Tunneling
Site Visit of
Micro tunneling Method
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What is Shield Tunneling ?
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Source: Environmental Planning Bureau, Yokohama City
Shield Tunneling in Yokohama City
Tunnel Boring MachineDrive Shaft
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Source: Environmental Planning Bureau, Yokohama City
Shield Tunneling in Yokohama City
First Cut Erected Segments
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Source: Environmental Planning Bureau, Yokohama City
Shield Tunneling in Yokohama City
Secondary Lining Finished Pipeline
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Damaged Pipe by Corrosion
18
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What is CIPP ?inversion
pressure generator Boiler Deodorization
plug Liner end restrained
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Section of CIPP
Liner(resin)
The damaged host Pipe
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Installing Liner Inverting Liner
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Before Rehabilitation After Rehabilitation
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What is SWP?power supply profiled plastic strip
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Rehabilitated Pipeline
Installation of SWP
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Rectangular Shape Horseshoe Shape
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Summary Time has come for trenchless to cope with heavy traffic
& urbanization
For new sewer installation, micro tunneling & shield tunneling with segment lining are recommended.
For rehabilitation, CIPP & SWP are options
Technology is transferred from Japan
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Thank you for your attention!
Japan Sewage Works Association
Japan Global Center for Urban Sanitation