Q179
The Eurotunnel construction was aided by what crucial geotechnical advantage?
A.
Stable chalk marl
AnswerB.
Granitic basement
C.
Basaltic flow
D.
Clay-rich soils
Answer: Option A
Solution
Answer: Option A
Solution:
The Eurotunnel between UK and France passed through chalk marl - a relatively stable, low-permeability rock that allowed safe and efficient TBM operation.