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• 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