Q190
The primary reason for tunnel collapse in Hallands�s Tunnel (Sweden) was:
A.
Fault movement
B.
Inadequate waterproofing
AnswerC.
Toxic chemical use
D.
Soft clay
Answer: Option B
Solution
Answer: Option B
Solution:
The Hallands�s Tunnel experienced water inflow due to inadequate waterproofing in fractured rock. Additional sealing techniques had to be implemented mid-project.