Asia's leading online portal for the building and construction industry.

Tunnel Excavation

A tunnel is an underground or underwater passageway, dug through the surrounding soil/earth/rock and enclosed except for entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube construction techniques rather than traditional tunnel boring methods. Tunnels are dug in types of materials varying from soft clay to hard rock. The method of… More

Related Categories
Microtunneling  |  Tunnel Leak Repairs  |  Tunnel Liner Grouting  |  Tunnel Linings  |  Tunneling, Boring & Jacking


1 company found


In 2001, it was assessed as a National Excellent Construction Unit. In 2002, it had been awarded the Titles of Winner of Gold Quality Prize of Shanghai Municipality and National Enterprise. The Ministry of Construction has qualified STEC as a super class… More