Q44
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
AnswerD.
Permafrost
Answer: Option C
Solution
Answer: Option C
Solution:
The Channel Tunnel passed through chalk marl with water-bearing zones, requiring precise alignment and pressure-controlled TBMs.