JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech III Year SURFACE MINING TECHNOLOGY Previous Question Paper (November/December - 2018 - 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
Give the status of Surface coal mining in Telangana.
Answer
Surface coal mining is the dominant method of coal extraction in Telangana, primarily operated by the Singareni Collieries Company Limited (SCCL). It accounts for a significant majority of the state's total coal production, utilizing large-scale opencast projects in the Godavari Valley Coalfield.
What is the minimum width of the benches in opencast mines?
Answer
The minimum width of a bench in an opencast mine is generally determined by the size of the largest machinery operating on it. As per standard safety regulations, the bench width must not be less than the width of the largest machine plus a clearance of at least 2 to 3 meters for safe movement and maintenance.
State the applicability of scraper in surface mining.
Answer
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What is secondary blasting?
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List the common break downs of a Shovel.
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State the applicability of Road grader.
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Why EMP is prepared for a mine?
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What is safety zone in blasting?
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State the name of the Ministry dealing with the Environment Clearances of the coal mines.
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What is placer mining? What are the minerals extracted through it?
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Part B
Explain the different technologies applicable for opencast mining. Mention the applicability of each technology.
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Compare opencast mining with underground mining.
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What is Box-cut? How do you choose the location of Box-cut?
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How do you record the Blast vibrations? Explain the procedure in detail.
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Give the parameters to be considered for selection of Drilling machines.
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Give an account of problems encountered due to blasting in opencast mines.
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Explain the applicability of Surface miner. Describe the method of continuous surface mining with a layout. Sketch and label the continuous surface miner.
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A coal seam is at a depth of 180m from surface having a thickness of 12m. What is the method you would suggest to work? Give the equipment and manpower required and the layout of the mine.
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Give the organizational structure of a large opencast project with shovel dumper combination.
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Mention the duties of Manager and Safety Officer.
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What are the preventive measures to be taken against fire in the machinery of opencast mines?
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What are the general sources of fire in HEMM?
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What are the environmental problems due to opencast mining?
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Explain the method of dealing air pollution in opencast mines.
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What are the various statutory permissions to be obtained before starting of an opencast mine?
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List some of the statutory provisions related to opencast mining in respect of Under Managers and Engineers.
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