Q115
Which of the following increases the risk of rockbursts?
A.
Soft rock masses
B.
Low mining depths
C.
High in-situ stress
AnswerD.
Extensive ventilation
Answer: Option C
Solution
Answer: Option C
Solution:
Rockbursts are violent rock failures due to stress release.The correct answer is: High in-situ stressOccurs at deep levels where stress builds up.May cause sudden collapse or ejection of rock.