JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech III SURFACE MINING TECHNOLOGY Previous Question Paper (May/June - 2019 - R13)
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 and may have a, b, c as sub questions.
Part A
What is Box cut?
Answer
A box cut is the initial excavation or opening made in a surface mine to expose the mineral deposit. It is typically a rectangular trench or pit created to establish the first working face and provide access for subsequent mining operations.
What is the importance of stripping ratio?
Answer
The stripping ratio is the ratio of the volume of overburden to the quantity of mineral extracted. It is critical for determining the economic feasibility of a mining project, as it dictates the cost of waste removal relative to the revenue generated by the mineral, thereby defining the ultimate pit limit.
List the factors which influence the selection of drills for opencast blasting?
Answer
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Describe about the production efficiency of earth moving equipment?
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What is the formula to determine capacity of Dipper Shovel?
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What are the conditions suitable for use of Draglines?
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What is the factor of safety of a slope?
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What are the advantages of correct super elevation?
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What are the environmental problems caused by coal mining activity?
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How the flora and fauna damaged by mining activity?
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Part B
Discuss the status of surface mining of Iron Ore in India vis-à-vis production and productivity.
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Explain the factors which influence the selection between surface mining and underground mining in detail.
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What are the suitable conditions for wheeled scrappers?
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Explain the principle and operational details of wheeled scrappers.
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What are the different types of blast hole drills?
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Discuss about the performance parameters of drills.
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Give the applicable conditions for use of Dipper shovels.
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Explain the principle and operation of a Drag Line.
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Distinguish between Dipper shovel and a Drag line.
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What are the limitations of use of a Scrapper?
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Explain the design of open pit slopes in detail.
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Explain the design of open pit dumps.
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Describe the regulatory framework for exploitation of placer and sea bed deposits.
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Explain about Environmental Impact Assessment.
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Discuss about the recent developments in the deployment of heavy earth moving machineries in the surface mines.
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