• Arrival of the massive TBM cutterhead

  • A first in Hong Kong : a 8.7m-diameter TBM was used for excavation

  • Automatic installation of tunnel segments

  • The tunnel broke through in 2001


KCRC – Kwai Tsing Tunnels


Three tunnel sections, three different methods


The 3.6 kilometre-long Kwai Tsing Tunnels, over three individual sections, were part of the West Rail project. Each of the sections presented engineers with varying tunnelling conditions. As such, Dragages opted for different construction methods: drill-and-blast, Tunnel Boring Machine (TBM) and cut-and-cover.


The second section ran below a MTR line and highway roundabout. To cater for the mixed ground conditions, Dragages brought a dual mode Earth Pressure Balanced TBM, for the first time, to Hong Kong. Unlike traditional TBMs, the machine is capable of excavating both soft ground and rock.


Attaining the highest civil engineering and environmental standards, the tunnel was completed on time without causing disturbances or major disruptions to residents or road traffic.

Client Kowloon-Canton Railway Corporation
Joint-venture project Construction of two
3.6 km railway tunnels
TBM 1,500 tonnes, 105 m long, average advance rate at 12 m/day
Year of Commencement 1998 - 2003