Longwall Mining MCQ Questions - Part 05 | Indian Minerology

Longwall Mining MCQ Questions - Part 05 (Final)

61. The longwall face is generally advanced by:

• A. Continuous cutting cycle
• B. Blasting
• C. Manual cutting
• D. None

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Answer: A. Continuous cutting cycle

62. The productivity of Longwall mining compared to Bord & Pillar is:

• A. Lower
• B. Equal
• C. Higher
• D. Negligible

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Answer: C. Higher

63. Roof supports in Longwall must be advanced:

• A. Before shearer starts
• B. After shearer passes
• C. Independently
• D. Randomly

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Answer: B. After shearer passes

64. What is the typical angle of dip suitable for Longwall?

• A. 0° – 35°
• B. 35° – 60°
• C. 60° – 90°
• D. Any dip

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Answer: A. 0° – 35°

65. The face length in Indian Longwall mines is often limited due to:

• A. Geological disturbances
• B. Equipment limitations
• C. Poor roof conditions
• D. All of the above

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Answer: D. All of the above

66. The floor heave issue in Longwall is caused by:

• A. High abutment pressure
• B. Water inflow
• C. Poor roof bolting
• D. Ventilation problems

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Answer: A. High abutment pressure

67. Which mechanical miner is best suited for Longwall development?

• A. Continuous Miner
• B. Bord Loader
• C. Dragline
• D. Shovel

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Answer: A. Continuous Miner

68. Periodic weighting intervals depend upon:

• A. Depth of cover
• B. Roof strata characteristics
• C. Panel width
• D. All of the above

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Answer: D. All of the above

69. Gas drainage in Longwall is needed mainly for:

• A. Methane
• B. Carbon monoxide
• C. Nitrogen
• D. Radon

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Answer: A. Methane

70. The main haulage system used in Longwall face is:

• A. Rope haulage
• B. Belt conveyor
• C. Armoured Face Conveyor (AFC)
• D. Tub haulage

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Answer: C. Armoured Face Conveyor (AFC)

71. In Longwall, goaf filling with sand is known as:

• A. Stowing
• B. Packing
• C. Strip fill
• D. Gob filling

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Answer: A. Stowing

72. Major factor for Longwall success in India is:

• A. Geological support
• B. Strong tech & maintenance
• C. Adequate training & planning
• D. All of the above

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Answer: D. All of the above

73. Which of the following faces sudden weighting often?

• A. Deep seams
• B. Shallow seams
• C. Weak overburden strata
• D. Thick seams

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Answer: A. Deep seams

74. Which parameter is critical to Longwall panel design?

• A. Depth of cover
• B. Strata condition
• C. Seam thickness
• D. All of the above

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Answer: D. All of the above

75. Longwall mining ensures coal recovery up to:

• A. 40–50%
• B. 60–70%
• C. 80–90%
• D. 100%

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Answer: C. 80–90%

📚 Longwall Mining MCQ Series (Complete)

👉 "You have successfully completed the entire 75 MCQs series on Longwall Mining."✅

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