CTRL Contract 320 Thames Tunnels

Two rail tunnels under the river Thames using Slurry TBM’s, as part of the High-Speed Rail Link between Channel Tunnel at Cheriton and Ashford.

Year: 2000

Country: United Kingdom

Contract Value (US$): 300 Million

The twin Thames Tunnels represented the highest risk project to connect the Channel Tunnel with central London, due to the poor geology in the Thames valley and underneath the river Thames itself. For the first time in the UK, Slurry TBM’s were utilized in order to manage these extreme conditions including tunnelling through soft clays, gravels and chalk with heavy bands of flintstones.

Andreas Tauschinger was the Project Director of this Joint Venture, which successfully completed this critical work by early 2002 and won the British Tunnelling Society Award for 2001.