Q131
In the Olmos irrigation tunnel project (Peru), what geological hazard caused cost overruns?
A.
Collapsing sand layers
B.
Earthquakes
C.
Rock bursting in andesite
AnswerD.
Glacier melting
Answer: Option C
Solution
Answer: Option C
Solution:
The tunnel experienced rock bursting due to high in-situ stress in andesite formations, damaging TBMs and delaying excavation.