Machine-translated by Google. Questions are authored in English.
Top

Discussion

Rock bursts are associated with rock that is

  • A.weak, plastic and under low stress at shallow depth
  • B.highly weathered and saturated with groundwater
  • C.closely jointed with clay infilling on the joints
  • D.strong, brittle and under high stress

Answer: D

Correct answer: strong, brittle and under high stress

A burst requires rock able to store elastic strain energy and to release it suddenly, which means strong and brittle material carrying a stress close to its strength. Weak or heavily jointed rock yields gradually instead and cannot store the energy. Bursts are therefore a deep hard-rock problem, not a weak-ground one.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.