Shatin to Central Link – Contract No. 1121 – NSL Cross Harbour Tunnels – Immersed Tunnel Unit at Shek O

Tunnel Waterproofing Works

Project Description

Hong Kong MTR’s Shatin to Central Link (SCL) has celebrated another milestone at the former Shek O Quarry with the completion of all the pre-cast units for the 1.7km long new cross-harbour railway tunnel.

The new tunnel section will extend the East Rail Line across the harbor to a new station in Wai Chai North and terminate at Admiralty.

Witnessed by government representatives and working partners, water started to flow into the basin where eleven tunnel units, have been fabricated. In two months’ time, these pre-cast tunnel units will be floated and towed to the sea one by one for further immersion and connection on the seabed of the Victoria Harbour.

Extending the existing East Rail Line from Hung Hom Station, this railway harbor crossing will reach the Causeway Bay Typhoon Shelter and connect to the machine-bored tunnels towards Wan Chai North and Admiralty, to form the North South Corridor of SCL. The SCL project also includes an East West Corridor which connects the Ma On Shan Line with the West Rail Line at Hung Hom Station via new stations in East Kowloon.

On September 2015, our company was awarded for the project of “Contract No. SCL1121 – NSL Cross Harbour Tunnels – Waterproofing Works for IMT Unit at Shek O” from Penta Ocean – China State Joint Venture.

The works herein specified for waterproofing system to the Immersed Tube Tunnel Unit at Shek O casting yard. The waterproofing works were over 50,000 m² and the works was started on May 2016 and completed on March 2017.

The works were included the application of waterproofing membrane to the immersed tube tunnel units at Shek O casting yard. We provided 15 years warranty for the waterproofing works in this project.