GATE MN · 2020 · MN
Question 36: Ground Control
Give it a try, then reveal the answer to check your work.
Question 36
MNNAT2 marksNeeds review
Two underground mines are separated by a horizontal coal barrier of 60 m thickness. One mine is inundated, where the other mine has a blind heading of dimensions 4.0 m wide and 2.5 m height terminating at the barrier. The overall in-situ shear strength of the coal mass is 500 kPa. Assume that the failure mode is in shear. At a factor of safety of 10, the maximum water head that can be withstood by the coal barrier, in m, is ________ (round off to 1 decimal place).
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerEXPLORE & PRACTISE
Paper and topic context
See where this question comes from and choose what to practise next.
2020MN
GATE MN 2020 · Paper 1
Mining Engineering · Original paper archive
- Section
- Mining Engineering
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
Practise related topics
Explore more previous year questions using this question’s imported topic tags.
mining engineering
GATE MN previous year questions
mining
GATE MN previous year questions
mineral processing
GATE MN previous year questions
ground control
GATE MN previous year questions
Comments
Ask a question, share your approach, or help someone understand.
Log in to view the discussion
You’re not logged in. Log in or create an account to see discussions and add comments.