Q170
Which of the following supports is classified as a passive support?
A.
Shotcrete
B.
Steel set
AnswerC.
Rock bolt
D.
Cable bolt
Answer: Option B
Solution
Answer: Option B
Solution:
Passive support does not actively resist deformation but holds ground in place.The correct answer is: Steel setShotcrete and bolts are considered active supports.Steel sets are common in tunnels with poor ground.