Mine Development and Mining Methods MCQs Questions & Answers

Section 1 Section 2 Section 3

1.
What is the major challenge in shaft sinking in water-bearing strata?

A. Hard rock cutting

B. Air quality control

C. Water inflow and pressure

D. Crew safety training

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Answer & Solution

Answer: Option C

Solution:

strong>Shaft sinking is the process of creating a vertical or inclined opening in the ground, typically for mining purposes.

The question asks about the major challenge in shaft sinking specifically in water-bearing strata. Water-bearing strata refers to geological layers of rock or soil that contain significant amounts of groundwater.

Option C: Water inflow and pressure is the correct answer. In water-bearing strata, the primary challenge during shaft sinking is the substantial inflow of water under pressure. This water can significantly hinder the sinking process in several ways:

* It can destabilize the shaft walls, leading to collapses.
* It can create difficulties in excavation and the removal of excavated material.
* It requires specialized and expensive equipment and methods for water control (e.g., freezing, grouting, compressed air).
* It poses significant safety risks to the workers.

Option A: Hard rock cutting is a challenge in shaft sinking, but it is not the *major* challenge in water-bearing strata. Hard rock presents difficulties in excavation, but it doesn't present the same level of immediate danger and operational disruption as a high-pressure water inflow.

Option B: Air quality control is important for worker safety in any underground mining operation, but it's not the *primary* problem associated with water-bearing strata. While managing dust and ventilation is crucial, water inflow presents a more direct and potentially catastrophic risk.

Option D: Crew safety training is essential for all mining operations, including shaft sinking. However, it's not a *challenge* inherent to water-bearing strata itself; rather, it's a crucial element in mitigating the challenges posed by water inflow (and other hazards). Water inflow presents the inherent geological and engineering challenge.

2.
Which of the following terms refers to the horizontal plane separating ore and waste in a stope?

A. Footwall

B. Hanging wall

C. Ore-waste interface

D. Level drift

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3.
Why is horizontal development often done before vertical development?

A. Easier blasting

B. Faster machinery deployment

C. Better access and drainage

D. Lower equipment cost

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4.
Which of the following equipment is used for breaking oversized boulders at drawpoints?

A. Rock breaker

B. Jaw crusher

C. Ball mill

D. Grizzly feeder

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5.
What is the role of a staging chamber in a shaft?

A. Emergency exit

B. Pump installation

C. Hoist changeover point

D. Explosive storage

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6.
Which of the following methods is most suitable for a steeply dipping narrow vein?

A. Block caving

B. Room and pillar

C. Shrinkage stoping

D. Longwall mining

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7.
What is the main purpose of installing a collar during shaft sinking?

A. Prevent water inflow

B. Strengthen shaft bottom

C. Provide stable top for equipment

D. Reduce dust

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8.
What equipment is commonly used in drift development for loading broken rock?

A. Scraper

B. Conveyor belt

C. LHD (Load-Haul-Dump)

D. Shovel dozer

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9.
Which of these methods is least selective in ore extraction?

A. Cut and fill

B. Room and pillar

C. Block caving

D. Shrinkage stoping

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10.
What does "ramping" refer to in underground development?

A. Ore crushing

B. Inclined access construction

C. Drilling longholes

D. Rock reinforcement

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Mine Development and Mining Methods MCQs Questions & Answers | Mining Engineering

1. What is the major challenge in shaft sinking in water-bearing strata?

Answer & Solution

2. Which of the following terms refers to the horizontal plane separating ore and waste in a stope?

Answer & Solution

3. Why is horizontal development often done before vertical development?

Answer & Solution

4. Which of the following equipment is used for breaking oversized boulders at drawpoints?

Answer & Solution

5. What is the role of a staging chamber in a shaft?

Answer & Solution

6. Which of the following methods is most suitable for a steeply dipping narrow vein?

Answer & Solution

7. What is the main purpose of installing a collar during shaft sinking?

Answer & Solution

8. What equipment is commonly used in drift development for loading broken rock?

Answer & Solution

9. Which of these methods is least selective in ore extraction?

Answer & Solution

10. What does "ramping" refer to in underground development?

Answer & Solution

Read More Section(Mine Development and Mining Methods)

1.
What is the major challenge in shaft sinking in water-bearing strata?

2.
Which of the following terms refers to the horizontal plane separating ore and waste in a stope?

3.
Why is horizontal development often done before vertical development?

4.
Which of the following equipment is used for breaking oversized boulders at drawpoints?

5.
What is the role of a staging chamber in a shaft?

6.
Which of the following methods is most suitable for a steeply dipping narrow vein?

7.
What is the main purpose of installing a collar during shaft sinking?

8.
What equipment is commonly used in drift development for loading broken rock?

9.
Which of these methods is least selective in ore extraction?

10.
What does "ramping" refer to in underground development?