Shatin to Central Link – Contract No. 1128 South Ventilation Building to Admiralty Tunnels

Tunnel Waterproofing Works

roject Description

The main scope and challenge of the project is to construct the Eastern Tunnels and Western Tunnels by Tunnel Boring Machine (TBM), which go through the city’s busiest districts, as well as the South Ventilation Building. 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 are being employed for excavation – a slurry TBM and an Earth Pressure Balanced (EPB) TBM. 

On September 2016, our company was awarded for the project of “Contract No. SCL1128 – Waterproofing System to Underground Structure at Works Area W8” from Dragages – Bouygues Joint Venture. 

On April 2017, our company was also awarded for the project of “Waterproofing System to Cut & Cover Tunnel and South Ventilation Building at Works Area W1 and W2”. 

The works herein specified for waterproofing system as below:

1) Works Area W8: TBM Launching Structure and Base Slab, Cut & Cover Tunnel, Emergency Egress Point Structure in Area 1; SCL and NIL C&C Tunnel in Area 2;

2) Works Area W1 & W2: Cut & Cover Tunnel and South Ventilation Building.

The waterproofing works were approximately 28,000 m². 

The works were started on October 2016 and the works are in-progress. We provided 15 years warranty for the waterproofing works in this project.