JNTU
JNTU B.Tech III UNDERGROUND MINING TECHNOLOGY Previous Question Paper (May/June - 2019 - R16)
Part A is compulsory. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit.
Part A
What are the different types of entries to reach a mineral deposit?
Answer
The primary types of entries to access a mineral deposit are shafts (vertical or inclined), adits (horizontal tunnels driven into a hillside), and declines or ramps (inclined tunnels from the surface).
What is In-situ theory?
Answer
The In-situ theory (or autochthonous theory) posits that coal seams were formed from vegetation that grew, died, and accumulated in the exact location where the coal deposit is now found, rather than being transported from elsewhere by water or wind.
Define a vein.
Answer
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Define tabular deposit.
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Explain long wall advancing method.
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Discuss Beam Stage Loader.
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Define a stope.
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What is a stull?
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What do you understand by the term statutory provisions?
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What is leaching?
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Part B
What is In the seam mining? Explain.
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Write down the merits and demerits of in seam mining.
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Tabulate the dimensions of pillars and galleries as per CMR 1957.
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Explain Bord and pillar method with a neat sketch.
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Explain with neat sketch of drifts used in an underground mine.
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Explain with neat sketch of cross cuts used in an underground mine.
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List out the different types of raising methods used in metal mines.
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Discuss in detail about extraction of coal in conjunction with stowing.
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Discuss in detail about extraction of coal in conjunction with caving.
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What are the advantages of long wall mining method?
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What are the disadvantages of long wall mining method?
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What are the different types of stoping methods used in metal mines?
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Explain the factors effecting the choice of stoping methods.
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Explain Room and pillar method with a neat sketch.
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List out the applicability conditions for Room and pillar mining method.
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Explain the block caving method with a neat diagram.
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List out the advantages of Block caving method of extraction.
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What do you understand by the term cost of mining methods? Explain.
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Being a mining engineer how can you achieve the targeted production in a safe and economic manner.
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