IOM3 Hong Kong

Technical Visit to the Hong Kong West Drainage Tunnel. (Saturday, 6th March, 2010)

ASSEMBLY: 8:45 am, 6th March, 2010.

Cyberport Public Transport Interchange.

Restricted to 16 visitors.

IoM3 members will be given priority.

Visitors must bring their own

PPE including: Hard Hat, Safety

Boots, Reflective Jacket.

Meeting Point,

Cyberport PTI (lobby by

entrance to Park’n’Shop

and Post Office)

Note that the tunnel environment is warm and humid, it is recommended to wear old clothes

and bring a change of clothes if planning to travel on public transport after the visit.

For registration, please respond to Guy.Bridges@aecom.com.

Successful applicants will be informed before the event.

The Hong Kong West Drainage Tunnel comprises over 10.5km of drainage tunnel of 6.25m and 7.25m

internal diameter to be constructed by hard rock TBM, and nearly 8km of adit tunnels to be excavated

by drill and blast method. The main tunnel is lined with a precast concrete lining, and the adits with a

cast in-situ concrete lining.

Tunnels are being constructed from portals at Tai Hang and Cyberport. The visit will enter the tunnel to

view the TBM, as well as visiting the adit junction where break-out from the segmental lined tunnel is

underway, with excavation carried out by mechanical methods.