Longwall Mining MCQ Questions - Part 05 | Indian Minerology - Indian Minerology

Longwall Mining MCQ Questions - Part 05 | Indian Minerology

Longwall Mining MCQ Questions - Part 05

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

Show Answer

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

Show Answer

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

Show Answer

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

Show Answer

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

Show Answer

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%

Show Answer

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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