• CLP’s longest and largest cable tunnel

  • Double-shield Tunnel Boring Machine

  • FIRST in Hong Kong: A 16-person refuge chamber used in the TBM

  • Tunnel segments

  • Covered spoil conveyor

  • Rock excavation at Tuen Mun Shaft

Tunnel

CLP – Castle Peak Cable Tunnel

2005

Download Case Study PDF

 

The CLP Castle Peak Cable Tunnel Project brings essential additional power supplies from the Castle Peak & Black Point Power Stations to Tuen Mun, Tung Chung and Hong Kong International Airport. As CLP’s longest and largest tunnel, the 4.5 metre diameter tunnel allows for the installation of eight high voltage cable circuits.

 

The use of a Tunnel Boring Machine (TBM) left the beautiful mountainous area of the north-western New Territories intact; yet existing underground utilities, such as main fuel supplies and high-voltage cables, demanded stringent work requirements and meticulous planning.

 

The use of a Tunnel Boring Machine (TBM) left the beautiful mountainous area of the north-western New Territories intact; yet existing underground utilities, such as main fuel supplies and high-voltage cables, demanded stringent work requirements and meticulous planning.

 

The works area in Tuen Mun was located in proximity to a residential complex of more than 3,000 apartments. A noise cover during the shaft construction phase was used to bring down the noise levels by 24dB(A).

 

Other environmental measures included collecting and treating waste water to recycle throughout the project on tunnelling works, vehicle washing and dust suppression measures.

 

Dragages’ commitment to partnership with the community and environmental management was recognised with various awards

Client CLP Power Hong Kong Limited
Project Construction of a cable tunnel for eight cable circuits
Cable Tunnel 4.5 m diameter
Year 2005 - 2009