The Shatin to Central Link (SCL) – Contract 1128 South Ventilation Building to Admiralty Tunnels multiple slurry solution
The MTR Shatin to Central Link (SCL) – Contract 1128 South Ventilation Building to Admiralty Tunnels comprises the permanent works and the associated temporary works necessary for the TBM driven tunnels between South Ventilation Building (SOV) and Admiralty station, and short sections of cut and cover tunnels near the operating MTR Tsuen Wan Line South Ventilation Building (SVB). The key challenge of the project is to construct the Eastern Tunnels and Western Tunnels by TBM, as both tunnels pass through the city’s busiest districts. Meticulous project planning is essential in aiding the TBMs to navigate through a large volume of pile obstructions and utilities with zero interruption of services to citizens. To cope with the complex geological conditions, two different types of TBMs with innovative launching methods are employed for excavation – a slurry TBM and a variable density TBM.