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Black Point Power Station
Pipe Jacking in Hong Kong
Black Point Power Station in Hong Kong
Located in the New Territories region of Hong Kong, Black Point is one of the world’s largest gas-fired combined-cycle power stations with ultra low-sulphur diesel as backup fuel source. Leighton Asia won the contract to upgrade the power station that has been in operation since 1996. Siam Minerals was brought on board to provide slurry materials, as well as quality control (QC) services and equipment.
The scope of work on the power station included excavation and lateral support activities, as well as developing deep shafts and pipe jacking for the delivery of a new cooling water intake and discharge facility, which includes a new pumping station and underground cooling water pipelines. In addition, a maintenance shaft and turbine hall will be used to house the power generation equipment and associated facilities.
Project Responsibilities
Drive 1 (shaft F to A): 115 m ID, 2,600 mm straight drive
Drive 2 (shaft E to F): 380 m ID, 2,600 mm curve drive
Ground formation: predominantly compressed decomposition granite (CDG), silt, clayey, hard rock
Project Challenges
Drive 1 comprises CDG and massive clay
Drive 2 is only 3 meters from the sea banks, and has highly saline soil and ground water
Curve drive is 37 degrees and utilizes an interjack connection (IJS pipe) to push the pipe ring
STP operator works simultaneously on a slurry plan and lubrication plan
Delivered Drilling Fluid Products
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Project Owner
China Light Power
TB Machine
Herrenknecht
Mud Engineering
In cooperation with Niva Solutions (Siam Minerals Partner)