Q195
Which hazard was encountered during excavation of the Brenner Base Tunnel?
A.
CO? emissions
B.
Water inrush from karst
C.
Ice pockets
D.
Swelling rock
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
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.