Channel Tunnel Rail Link, North Downs Tunnel (UK)


Geo-Design was involved in a section of the Channel Tunnel Rail Link which comprised a single bore, 3.2km long, 14m span tunnel through chalk rocks.

Geo-Design provided specialist input to assist in the design of the North Downs Tunnel:

  • Review and design input of tunnel
  • Specialist input on discontinuous rock mass response in weak rocks (construction stage)
  • Evaluation of encountered conditions
  • Preparation of geological and rock mass representations
  • Analyses to evaluate stability and support recommendations
This project was posted in Rail, Tunnels.

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