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Compendium: (Pipe Jacking Method)

This document provides an overview of microtunnelling, also known as pipe jacking. It describes microtunnelling as an alternative to open-cut trenching that can be used to install pipes underground where heavy traffic, congested utilities, or deep installation makes open-cut difficult. The document outlines the basic elements and procedures for microtunnelling projects, including drive shafts, shield machines, jacking pipes, measurement, muck removal, and backfilling. It also classifies microtunnelling by diameter and pipe material, such as concrete, PVC, steel, or segmented pipes.

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Deyvis Marquez
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157 views27 pages

Compendium: (Pipe Jacking Method)

This document provides an overview of microtunnelling, also known as pipe jacking. It describes microtunnelling as an alternative to open-cut trenching that can be used to install pipes underground where heavy traffic, congested utilities, or deep installation makes open-cut difficult. The document outlines the basic elements and procedures for microtunnelling projects, including drive shafts, shield machines, jacking pipes, measurement, muck removal, and backfilling. It also classifies microtunnelling by diameter and pipe material, such as concrete, PVC, steel, or segmented pipes.

Uploaded by

Deyvis Marquez
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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ＭＩＣＲＯＴＵＮＮＥＬＬＩＮＧ

(Pipe Jacking Method)


COMPENDIUM

1
Open-cut vs Microtunnelling
(Pipe Jacking Method)

Open Cut Microtunneling Courtesy: GSTT


2
Problems with Cut-and-Cover
Underground space in public right-of-way is
heavily used
Traffic congestion growing
Street pavement damage
Cost of surface restoration
Direct and indirect business loss
Great deal of spoil

3
ＭＩＣＲＯＴＵＮＮＥＬＬＩＮＧ
(Pipe Jacking Method)
A system of directly installing pipes behind a
Shield Machine by hydraulic jacking from a Drive
Shaft such that the pipes form a continuous string
in the ground
Used for places where;
1. Heavy traffic roads.
2. Utility pipes buried
underground are congested
and difficult to dig from the
surface of the ground.
3. Crossing road and rivers,
which means impossible to
dig from above ground.
4. The level of the installation is
deep and microtunnelling
would be cost-effective.
4
Basic elements for microtunnelling

5
Shaft for Microtunnelling (Pipe Jacking Method)
Sheet pile

Liner plate sheeting

Steel casing

6
ＭＩＣＲＯＴＵＮＮＥＬＬＩＮＧ
(Pipe Jacking Method)

Procedure
Earth-Pressure-Balance (EPB) type
for 3.0m Concrete pipe

7
Microtunnelling (Pipe Jacking Method)
Facilities installation (Drive shaft)

Reaction wall

Exit eye

8
Microtunnelling (Pipe Jacking Method)
Facilities installation (Drive shaft)

support rails Jacking rig

9
Microtunnelling (Pipe Jacking Method)
Facilities installation (Drive shaft surface)

Muck pit

Lubrication & Backfill grouting


Plant

10
Installation of Shield machine

11
Start pipe jacking

Jacking pipe is dropped into the


shaft and placed on the support
rails.

Launch of microtunnelling

12
Pipe Jacking

Exit eye

Pipe

Thrust ring

Jacking rig

13
Measurement

Confirm the line and


level by measurement.
Make sure the
installation is within
close limits of the target.

14
Muck transportation and discharge

Muck transportation
(by muck wagon)

Muck discharge
(behind the shield)

15
Muck transportation and discharge

Muck wagon being lifted


and discharged into the
muck pit

16
Reception of microtunnelling

After reception, backfill


grouting is carried out

17
CLASSIFICATION OF MICROTUNNELLING
(Pipe Jacking Method)

Large & Medium Diameter Open Face Type Open Shield

Closed Face Type Slurry Pressure


Balance type

for Concrete Pipe Earth Pressure


MICROTUNNELLING Balance type
(Pipe Jacking Method) Small Diameter for PVC Pipe High density
Slurry type
for Steel Casing
Pipe
for Lateral Pipe

Pipe Replacement

18
Super large diameter Pipe Jacking
（3500mm～5000mm）

Shield Machine Segmented type Jacking Pipe

19
Microtunnelling (Pipe Jacking Method)
for Large & Medium Diameter
(Slurry Pressure Balance type)

20
Microtunnelling (Pipe Jacking Method)
for Large & Medium Diameter
(Earth Pressure Balance type)

21
Microtunnelling (Pipe Jacking Method)
for Large & Medium Diameter
(High density slurry type)

22
Small diameter Microtunnelling
（１５０mm～７００mm）

for Concrete Pipe for PVC Pipe for Steel Casing Pipe

23
Microtunnelling (Pipe Jacking Method)
for Small Diameter
(Slurry Pressure Balance type)

24
Microtunnelling for Lateral Pipe
（100mm～300mm）

Shield Machine Steel casing pipe

25
Pipe Replacement

Shield Machine Jacking rig

26
Thank you

Japan Microtunnelling Association


http：//www.suisinkyo.or.jp/

27

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