JNTU
JNTU B.Tech III SURFACE MINING TECHNOLOGY Previous Question Paper (February - 2023 - R16)
Question paper consists of Part A, Part B. Part A is compulsory (25 marks). In Part B, answer any one question from each unit (10 marks each).
Part A
Determine the significance of stripping ratio.
Answer
The stripping ratio is a critical economic indicator defined as the ratio of the volume of overburden removed to the quantity of mineral extracted. It determines the feasibility of surface mining by indicating the cost-effectiveness of removing waste to access the ore body.
What do you mean by mine life?
Answer
Mine life refers to the total duration for which a mining operation is economically viable. It is calculated by dividing the total mineable reserves by the annual production rate, accounting for factors like market demand, ore grade, and operational costs.
What is excavator in mining?
Answer
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How do you estimate the number of drills for a given mine production?
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What is a payloader used for?
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What is the function of dragline?
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What are underground developed zones?
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Give the basic design principle of large opencast mines?
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What is the process of sluicing?
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What is dredging?
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Part B
Compare between surface mining and underground mining and explain the selection criterion for each of the above.
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Examine the factors affecting selection of site of box-cut.
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Explain the working principle of scraper with a neat sketch.
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Explain various types of blast hole drills, and the performance parameters of drills.
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Bucket wheel excavator
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Bucket chain excavator.
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Explain the functions of dozer, grader, loader, scraper, dumper crusher.
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Explain the organizational structure of large opencast mines.
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Explain the mechanized quarries and their advantages.
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Explain the exploitation systems of ocean mineral resources.
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Determine various provisions of coal mines and metalliferous mines regulation.
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