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Which geotechnical challenge occurred during the construction of the Chunnel (Channel...

This question belongs to Geological Engineering Case Studies And Applied Geological Engineering Projects
Case Studies and Applied Geological Engineering Projects
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Which geotechnical challenge occurred during the construction of the Chunnel (Channel Tunnel)?

Answer & Solution
Correct Answer: Option B
The TBMs encountered water ingress through fault zones in chalk marl, requiring sealing and advanced dewatering systems.
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