Rock Mechanics and Rock Engineering MCQs Questions & Answers | Geological Engineering Page-5 section-1

41.
The primary cause of failure in a rock tunnel roof is:

A. Earth pressure

B. Bending tension

C. Jointing and lack of support

D. Gravity

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42.
What is the effect of increasing confining pressure on rock strength?

A. Decreases strength

B. No effect

C. Increases strength

D. Causes slaking

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43.
Which test determines deformability of rock mass in situ?

A. UCS test

B. Plate load test

C. Permeability test

D. Brazilian test

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44.
What type of rock support is commonly used in weak, fractured rock zones?

A. Anchor rods

B. Rock bolts

C. Shotcrete

D. All of the above

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45.
In rock slope analysis, what does wedge failure involve?

A. Circular slip

B. Block sliding along two planes

C. Rock toppling

D. Rotational movement

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46.
Which of the following rock types is most susceptible to weathering?

A. Basalt

B. Granite

C. Shale

D. Quartzite

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47.
The term RMR stands for:

A. Rock Modulus Ratio

B. Rock Mass Rating

C. Relative Mass Ratio

D. Rock Mass Range

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48.
What is the main failure mode in columnar basalt rock slopes?

A. Planar failure

B. Wedge failure

C. Toppling failure

D. Flow failure

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49.
In the Hoek-Brown failure criterion, which parameter is NOT required?

A. Uniaxial compressive strength

B. Joint orientation

C. Geological Strength Index

D. Material constant mi

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50.
What is the effect of increasing joint spacing on rock mass strength?

A. Increases strength

B. Decreases strength

C. No effect

D. Causes chemical weathering

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

41. The primary cause of failure in a rock tunnel roof is:

Answer & Solution

42. What is the effect of increasing confining pressure on rock strength?

Answer & Solution

43. Which test determines deformability of rock mass in situ?

Answer & Solution

44. What type of rock support is commonly used in weak, fractured rock zones?

Answer & Solution

45. In rock slope analysis, what does wedge failure involve?

Answer & Solution

46. Which of the following rock types is most susceptible to weathering?

Answer & Solution

47. The term RMR stands for:

Answer & Solution

48. What is the main failure mode in columnar basalt rock slopes?

Answer & Solution

49. In the Hoek-Brown failure criterion, which parameter is NOT required?

Answer & Solution

50. What is the effect of increasing joint spacing on rock mass strength?

Answer & Solution

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41.
The primary cause of failure in a rock tunnel roof is:

42.
What is the effect of increasing confining pressure on rock strength?

43.
Which test determines deformability of rock mass in situ?

44.
What type of rock support is commonly used in weak, fractured rock zones?

45.
In rock slope analysis, what does wedge failure involve?

46.
Which of the following rock types is most susceptible to weathering?

47.
The term RMR stands for:

48.
What is the main failure mode in columnar basalt rock slopes?

49.
In the Hoek-Brown failure criterion, which parameter is NOT required?

50.
What is the effect of increasing joint spacing on rock mass strength?