JNTU
JNTU B.Tech III SURFACE MINING TECHNOLOGY Previous Question Paper (May - 2019 - R16)
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 Box cut.
Answer
A Box cut is the initial excavation made in a surface mine to provide the necessary space and access for subsequent mining operations. It creates the first working bench and provides a ramp for equipment to enter the deposit.
What is a Trench cut?
Answer
A Trench cut is a narrow, linear excavation made to expose the mineral seam or to facilitate drainage and haulage. It is typically used in strip mining to establish the initial face or to partition the mining area into smaller, manageable blocks for extraction.
Give a note on Blast hole drills.
Answer
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What are the advantages of Drilling and Blasting?
Answer
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Explain about Surface workshop.
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What is an In-pit crusher?
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What is Mountain Top Removal?
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Define Rehabilitation.
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Define Gold Sluicing.
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List the HEMM used in surface mines.
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Unit I
Give the flow chart for stages of mine planning for a large opencast mine.
Answer
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Explain the objectives of a Box cut with a neat diagram.
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Unit II
How do you estimate the number of drill holes for a given mine production?
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What are the problems associated with Drilling and Blasting in surface mines?
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Unit III
Explain Continuous surface miner. List out its advantages and Limitations.
Answer
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What are the types of crushers used in surface mines? Explain each one of them.
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Unit IV
What are the factors of selection for designing a mechanized quarry?
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List out the advantages and limitations of surface mines.
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Unit V
What are the environmental problems due to surface mining? Explain.
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Give 10 Relevant provisions of opencast coal mines.
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