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Events and Activities

Technical Seminar: "A Concealed Moat in West Kowloon: Securing Urban Flood Protection with the Lai Chi Kok Drainage Tunnel"

Date, time & venue 
2013-01-03;6:00pm for 6:30 pm – 8:00 pm;HKIE Headquarters –Seminar Room



Ir H S KAN          Senior Engineer, Drainage Service Department  

Ir Stephen LAI    Technical Director, AECOM                                 


Programme Highlights

The Lai Chi Kok Drainage Tunnel (LCKDT) is a key component of Drainage Service Department’s flood control strategy to safeguard the coastal urban areas of West Kowloon.  Intercepting and diverting stormwater runoff from the uphill hinterland, it significantly reduces the hydraulic load on the previously flood-prone areas of Lai Chi Kok, Cheung Sha Wan and Sham Shui Po.


The LCKDT is 3.7 km in total length and 4.9m in diameter.  It is provided with six intakes, a stilling basin and an outfall.  The tunnel comprises two parts: an upstream Branch Tunnel constructed mid-hill for flow interception, and a downstream Main Tunnel located 45 m below ground for flow conveyance to the harbour.


The seminar will discuss a number of unique challenges tackled in the course of implementing the project.  Highlights include special design of the tunnel boring machine (TBM) to cope with the very distinct geological conditions of the two tunnels, constraints arising from various existing infrastructure and facilities, including four operating and one future railways, and the unprecedented application in Hong Kong of compressed air for TBM intervention at pressures up to 4.2 bar. 




Free of charge


Registration & Enquiries

Seats are limited to 80 on first-come-first-serve basis.

On-line registration was CLOSED at 9:00pm 31 December 2012 as the number of applicant exceeded capacity.

For enquiries, please contact Ir S.S. Kong at tel. 90232209 or email



Photographs of the Event

Please visit photo album "20130103 seminar on Lai Chi Kok Tunnel"

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