JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech IV PLANNING OF UNDERGROUND COAL MINING PROJECT Previous Question Paper (July - 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.
Part A
Define Mining.
Answer
Mining is the systematic process of extracting valuable minerals or other geological materials from the earth, typically from an ore body, lode, vein, seam, or reef, which forms the mineralized package of economic interest to the miner.
What is Mine planning?
Answer
Mine planning is the technical and economic process of designing the layout, sequence, and method of extraction for a mineral deposit. It involves determining the optimal extraction strategy to maximize resource recovery, ensure safety, and maintain economic viability throughout the life of the mine.
What do you understand by the term reserve estimation?
Answer
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Define Life of a mine.
Answer
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What are the problems in pillar extraction?
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List out few coal mining regulations related to pillar extraction.
Answer
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Write a short notes on Chock shields.
Answer
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Give a simple layout of a long wall panel.
Answer
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Define subsidence.
Answer
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Give a neat layout of Subsidence.
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Unit I
Discuss a detailed note on Mining industry in comparison with other industries.
Answer
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What are the major differences between underground and opencast coal mining?
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Unit II
What are the different access to a coal deposit? Explain each access with a neat diagram.
Answer
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What are the different reports used in mine planning?
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Unit III
Explain Pillar extraction by Blasting gallery method with a neat diagram.
Answer
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Explain Pillar extraction using SDL’s with a neat diagram.
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Unit IV
What are the major differences between advancing and retreating?
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Give a case study on Long wall panel using a neat diagram.
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Unit V
What are the types of subsidence seen during underground excavation? Explain with a neat diagram.
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What are the different methods of measuring subsidence? Explain one method.
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