Examveda

What was a unique geological challenge during the Channel Tunnel (UK-France) construction?

A. Cross-cutting fault

B. Soft soil liquefaction

C. Water-bearing chalk marl

D. Permafrost

Answer: Option C

Solution (By Examveda Team)

The Channel Tunnel passed through chalk marl with water-bearing zones, requiring precise alignment and pressure-controlled TBMs.

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