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Which hazard was encountered during excavation of the Brenner Base Tunnel...

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 hazard was encountered during excavation of the Brenner Base Tunnel?

Answer & Solution
Correct Answer: Option D
Swelling rock such as anhydrite was encountered. Upon contact with water, it expanded, exerting pressure on the tunnel lining. Countermeasures included reinforced linings and waterproofing.
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