The tunnels
Premium Content
11 June 2008
Length: 9.7 km of twin track railway tunnel
Seven shafts for tunnel ventilation and emergency egress
Short mined adits to the bored tunnel
TBM: Mitsubishi Earth Pressure Balance
Diameter: 9.59 m
Length of first drive: Union Square Station to Burjuman Station, 1456 m, including passing under the Creek, with about 10 to 13 m cover to Creek bed and 22 m below Creek sea level
Lining: pre-cast bolted segmental lining, 400 mm thick, with ring taper
Geology: marine sand, overlying cemented sand and Sandstones
Water table: typically 3 to 4 m below ground level
STAY CONNECTED
Receive the information you need when you need it through our world-leading magazines, newsletters and daily briefings.
Longer reads
Experts say mixed-fleet data, real-time intelligence and autonomous machines will reshape project planning and field execution
Can there be a pain-free approach to powering the next generation of construction equipment?
Was 2024 a year of transition for the industry?
CONNECT WITH THE TEAM
Neil Gerrard
Senior Editor, Editorial, UK - Wadhurst
Tel: +44 (0) 7355 092 771
E-mail: [email protected]
