JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech IV PLANNING OF UNDERGROUND COAL MINING PROJECT Previous Question Paper (May - 2019 - R15)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.
Part A
What are the Principles of Planning?
Answer
The principles of planning include the objective-oriented approach, ensuring economic viability, maintaining safety and environmental compliance, and maintaining flexibility to adapt to changing geological or market conditions.
What are the salient features of master Plan?
Answer
A master plan features a comprehensive layout of the entire project, including infrastructure, production targets, resource allocation, time-bound schedules, financial projections, and long-term environmental and safety management strategies.
What is mine planning?
Answer
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What is optional prediction life? Explain in brief.
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Explain the Blasting Gallery method.
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What are the cycles of operations in Cyclic mining?
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Explain the Supports in Gate Roads.
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What is Longwall Retreating?
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Explain Dome Theory?
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Explain Angle of Fracture.
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Part B
Explain how the mining industry is different from Steel Industry?
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What are the objectives of planning? How they will be effective in Large Underground coal Mining?
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What is feasibility report? Explain the factors to be considered while preparing a feasibility report.
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What are the factors to be considered while deciding the life of a mine? Explain each one of them in brief.
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What is stowing? Under which conditions stowing will be treated as a method of extraction? What are the materials available for stowing? Explain a new technique of getting stowing material?
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A coal seam of 'F' grade coal having 2.0 m in height and dipping at 1 in 4 and has heavy water seepage has to be extracted? Which method do you suggest for extraction of coal? Explain its advantages and disadvantages?
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A coal seam of 'G' grade coal having 2.5 m in height and dipping at 1 in 5 and has normal seepage was developed by Bord and Pillar manual method. Later it was decided to extract the coal by mechanization? Explain What are the machinary to be deployed, support system etc. cycle of operation and coal production? Assume other conditions.
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What are the different types of Gate Road Devices are used in a mechanized coal Mine? Explain them briefly.
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Differentiate Longwall Advancing Vs. Longwall Retreating method in terms of a) Production b) Safety c) Ventilation d) Maintenance e) Supports.
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What are different theories of Subsidence? Explain about Beam and Plate Theory in detail.
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Explain the main parameters of Subsidence with a neat sketch. Explain about critical area, Partial Area and Super Critical Area.
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