• KCRC WEST RAIL DB320TSING TSUEN TUNNELHONG KONG

KCRC West Rail - DB320

HA KWAI CHUNG & TSING TSUEN TUNNELS

Scope

3,600 meters tunnel for railway double track ie.

� 1800 lm twin tubes with TBM (rock and soft ground)

� 1640 lm single tube in Drill & Blast (granite)

� 180 lm cut & cover

Kwai Fuk

Road

Kwai Fong

MTR Viaduct

Lai King Hill

Ching Cheung

Road

Mei Foo StationTsing Tsuen Road

Round-aboutTsuen Wan

Road

Tsuen Wan

West

Station

Ha Kwai Chung

Tunnel (Drill & Blast)Tsing Tsuen Tunnel

(TBM Method)

Part of Tsing Tsuen

Tunnel (Cut and Cover)

Cross-Section of Ha Kwai Chung Tunnel

13 m

TunnelStructure

Tunnel Structure0.4 m

13 m

8.4 m

Kwai Tsing Tunnels – 3.6 km● Ha Kwai Chung Tunnel (1.7 km)

● Tsing Tsuen Tunnel (1.78 km)

● Tsing Tsuen Cut-and-Cover Section (0.12 km)

~200 m

Cross-Section of Tsing Tsuen Tunnel

14 m

50

m

180 m

9 m

8.6 m

KCRC West Rail - DB320

TSING TSUEN TUNNEL

� Excavation by TBM

� 1840 meters long, twin tunnel in rock and soft ground

� Internal diameter : 7,625 m (45 m2)

� Excavation diameter : 8,750 m

� Precast segments : 400 m/m thick

1800 m/m long

Grade 50 concrete

120 years design life

� Cross passages : 90 lm interval

KCRC West Rail - DB320

TSING TSUEN TUNNEL CHALLENGES

� Rock, and soft tunneling with the same machine⇒ Belt & screw conveyor, manlock,……

� TBM shaft close to residential towers⇒ Extensive noise enclosure for shaft, spoil handling, plant,…...

� Fast track program ⇒ Design, planning & mobilization,…..

� Design & construct a new TBM (EPB mode)

� First time in HK for such machine

⇒ FSD, Labour Dept, EPD, workers, professionals,…..

KCRC West Rail - DB320

TSING TSUEN TUNNEL

TBM - “MULAN”� Type : Earth Balance Pressure (EPB)- External diameter 8.75 m

� General Characteristics :

Internal diameter 7.625 m, Minimum tunnel radius = 400 m,

Max tunnel slope = 4%

Total length 108 m - Total weight 1,400 tons

Supply of material by train

Evacuation of spoil : 1 m wide conveyor belt

Power supply 11kVolts - Total installed power : 4,100 kW.

� Shield : in 3 parts : Cutter head center shield, articulated tailskin12.5 meters, thickness 70 m/m- Weight 860 tons (inc

Head)

Cutter head drive : 9 motors * 240 kW, 0 to 3 rpm.

KCRC West Rail - DB320

TBM - “MULAN” (cont’d)

Hydraulic grippers and stabilizers

Hydraulic segment erector, radio controlled.

2 personnel air lock + 1 emergency man lock + 2 equipment man locks

Thrust : 0 to 5200 tons, 13 pairs of thrust rams

excavation speed : 0 to 80 mm/mn

� Backup, 6gantries (90 meters)

Grouting system : 0 to 40 m3/h

Ventilation system 15 m3/s

Foam injection system

Bentonite injection “recaking” system

Breathable and industrial compressed air system

KCRC West Rail - DB320

TBM (cont’d)� Manufacturer :

NFM (Framatome Group France) under Mitsubishi licence

Design in Lyon

Components manufactured in France & Europe

Steel structure & assembly in Shanghai (SHMP)

KCRC West Rail - DB320

TBM (cont’d))� Program :

construction Award to NFM 20 Nov 98

Start in Shanghai : April 99

End assembly & test : 22 Dec 99

Arrival in HK : 10 Feb 2000

Starting date : 6 April 2000

Completion 1st drive 14 December 2000

transfer December to February 2001

Start 2nd drive February 2001

Completion 2nd drive July 2001

Open Mode for

hard-rock excavation

Close Mode for soft-ground excavation

TBM IN SHANGHAI FACTORY

TBM IN SHANGHAI FACTORY

TBM IN SHANGHAI FACTORY

TBM CONTROL ROOM

PARAMETERS MONITORING

TBM LAUNCHING

CEREMONY

MARCH 2000

TBM BREAKTHROUGH

CEREMONY ON 13/12/00

BREAKTHROUGH

2nd TUBE 9/7/2001

MANLOCK

INSIDE THE HEAD DISC CUTTER

TBM CUTTER HEAD

segment

grout

rock

Grouting at G10 adit

PRECAST SEGMENT FACTORY

PRECAST SEGMENT FACTORY

PRECAST SEGMENT FACTORY

SHAFT J : TBM START

TBM TUNNELScc300

Shaft D (end of soft ground excavation) SURFACE VIEW

D&B tunnels

TBM tunnels

Shaft D BOTTOM VIEW

SHAFT E from Top

TBM TUNNEL

Shaft E + ventilation Building

TBM TUNNELS

KCRC West Rail - DB320

KCRC West Rail - DB320

� LINK: NEW SOUTHERN SYDNEY RAILWAY LINE, AUSTRALIA