Q45
Which major tunnel collapse was attributed to poor geological mapping and unsupported face?
A.
Fort Point Channel collapse
B.
Daikai Station collapse
C.
Nicoll Highway collapse
AnswerD.
Lake Peigneur disaster
Answer: Option C
Solution
Answer: Option C
Solution:
The Nicoll Highway collapse (Singapore, 2004) occurred due to failure of retaining walls in soft marine clay, compounded by poor understanding of site geology and inadequate support.