Examveda

Which of the following techniques is primarily used to improve ground stability around tunnels?

A. Core drilling

B. Grouting

C. Dewatering

D. Scaling

Answer: Option B

Solution (By Examveda Team)

Grouting involves injecting cementitious or chemical material into the ground.The correct answer is: GroutingIt fills fractures, reduces permeability, and strengthens rock mass.Essential near water-bearing or loose zones.

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