Discussion
A cutting in fresh rock stands at 70 degrees, but the same rock weathered fails at 40 degrees. The explanation is that weathering has
Answer: C
Correct answer: lowered the friction along relict joint surfaces
Weathering leaves the original joints in place as relict discontinuities and coats them with clay produced by the decomposition of the minerals along them. Those clay-coated surfaces have a far lower friction angle than the fresh rock joints, so the slope fails on them at an angle at which the fresh rock would stand. The rock looks similar and behaves quite differently, which is why weathering grade must be logged in a slope investigation.
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