Jawaharlal Nehru Technological University Hyderabad
Jawaharlal Nehru Technological University Hyderabad B.Tech IV PLANNING OF UNDERGROUND METAL MINING PROJECT Previous Question Paper (May - 2019 - R15)
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
What is a metal mine?
Answer
A metal mine is an excavation or system of excavations made in the earth's crust for the purpose of extracting ores containing one or more metallic minerals, such as gold, copper, iron, or lead, which are of economic value.
What are the different access to a mineral deposit in underground metal mines?
Answer
Access to an underground mineral deposit is typically achieved through one of the following methods:
- Shaft: A vertical or steeply inclined opening.
- Adit: A horizontal or near-horizontal tunnel driven from the surface into the hillside.
- Decline or Ramp: A spiral or inclined tunnel providing access for rubber-tired equipment.
What is shaft sinking?
Answer
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What is shaft lining?
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Define a stope.
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What is a drift?
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What is stopping?
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List the types of supports used during stopping?
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What is meant by Production?
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What do you understand by the productivity?
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Part B
What are the major differences between coal mining and metal mining?
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What is the status of metal mining in India?
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Give a note on underground crushing stations.
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Ore Bin
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A sump
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Explain the applicability conditions of Block caving. List out its advantages and disadvantages.
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Explain the Techno economic analysis of choice of stopping methods?
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What are the unit operations of stopping?
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Explain the different supports used in underground mines?
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Give a note on division of the mining area into districts, levels and cross cuts.
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What is In-situ leaching? Explain.
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