Tunnel Boring Machine

Tunnel construction by means of TBM (Tunnel Boring Machine) has become a preferred method of construction nowadays. In addition, this is well accepted by the environmentalist and the green groups. This state-of-art technology limits all works underground in building the tunnel to keep the disturbance to land, wildlife and mankind activities at ground level to minimum throughout the period of construction.

Tunnel construction by TBM is quite different from the traditional Drill and Blast Method. The tunnel is excavated by means of a machine instead of blasting with explosive. The tunnel lining is put in place at the back of the machine immediately following a ring length of TBM advancement. A well thought engineering survey scheme is devised to integrate with the operating system and working sequence of the TBM.