Discussion
A tunnel is driven through a rock whose bedding dips steeply into the face. The chief concern is
Answer: C
Correct answer: slabs detaching along the bedding planes
Bedding dipping steeply into the face gives planes on which slabs can detach from the crown and the walls, since the rock is far weaker across the bedding than along it. The orientation of the discontinuities relative to the tunnel axis therefore matters as much as the strength of the rock itself, and support is designed to pin the beds back rather than to carry the intact material.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development