Q74
The primary purpose of grouting in the K�rahnj�kar Hydropower tunnels (Iceland) was to:
A.
Freeze ground
B.
Improve tunnel alignment
C.
Control water inflow in basalt
AnswerD.
Create seismic buffers
Answer: Option C
Solution
Answer: Option C
Solution:
The tunnels passed through basalt with numerous fractures. Grouting was essential to reduce water ingress and improve tunnel stability.