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Rock Mechanics and Rock Engineering MCQs Questions & Answers | Geological Engineering

Learn and practice multiple-choice questions (MCQs) with answers related to Rock Mechanics and Rock Engineering. These resources are available for Geological engineering students who wish to clear GATE exams, technical interviews, competitive examinations, and other entrance exams. The Rock Mechanics and Rock Engineering chapter is particularly important for students studying Geological engineering. Page-2 section-2

Each section contains 100 MCQs on Rock Mechanics and Rock Engineering .
11
The term "elastic rebound" in rock mechanics is associated with:
Discuss
Answer & Solution
Answer: Option B
Solution:
Elastic rebound is the sudden release of stored elastic strain energy causing earthquakes or rock failure.
12
Which method is commonly used to measure in-situ stress in rock engineering?
Discuss
Answer & Solution
Answer: Option B
Solution:
The overcoring method involves drilling around a rock core to measure stress relief and infer in-situ stresses.
13
Which factor has the greatest influence on rock slope stability?
Discuss
Answer & Solution
Answer: Option B
Solution:
Discontinuity orientation relative to slope face determines potential sliding planes and failure modes.
14
Which rock type is generally considered the most stable for underground excavation?
Discuss
Answer & Solution
Answer: Option B
Solution:
Granite is strong, massive, and less prone to weathering, making it stable for tunnels and shafts.
15
What is the purpose of rock bolts in rock engineering?
Discuss
Answer & Solution
Answer: Option B
Solution:
Rock bolts are used to reinforce and stabilize rock masses by holding fractures tightly together.
16
The phenomenon where rock fractures open due to reduction in confining pressure is called:
Discuss
Answer & Solution
Answer: Option D
Solution:
Unloading refers to rock fracturing and expansion when confining pressure is reduced, often during excavation.
17
Which of the following is NOT a common rock discontinuity?
Discuss
Answer & Solution
Answer: Option D
Solution:
Sand grains are mineral particles, not rock discontinuities. Faults, joints, and foliations are structural features.
18
The �Hoek-Brown criterion� is used to:
Discuss
Answer & Solution
Answer: Option A
Solution:
The Hoek-Brown criterion is an empirical method to estimate rock mass strength and failure conditions.
19
Which test evaluates the point load strength index of a rock?
Discuss
Answer & Solution
Answer: Option B
Solution:
The point load test provides an index of rock strength based on applying a concentrated load until failure occurs.
20
In rock engineering, what is meant by �groundwater inflow�?
Discuss
Answer & Solution
Answer: Option A
Solution:
Groundwater inflow is the movement of water from aquifers into underground excavations, which can affect stability and construction.