JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech II DEVELOPMENT OF MINERAL DEPOSITS Previous Question Paper (April/May - 2018 - R15)
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.
PART- A
What is goaf?
Answer
Goaf, also known as gob or waste, is the space left behind in an underground mine after the coal or mineral has been extracted from a seam or vein.
What is face?
Answer
A face is the active working area in a mine where the actual extraction of mineral or rock takes place. It is the exposed surface of the mineral deposit being currently mined.
What is VOD?
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What is detonating fuse?
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What is safari support?
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What is side support?
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What is tunnel?
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What is incline?
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What is piling method?
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What is head gear?
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PART- B
Write short notes on: i) Mine ii) Mining iii) Mining Engineering.
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Describe the different stages of mine life.
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What are: i) Development ii) Depillaring iii) Face iv) Strike.
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Write the essay on coal deposit of India.
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What is churn drilling? Describe the working principle of it with a neat diagram.
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Write short notes on: i) Detonator ii) Detonation pressure iii) NONEL.
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What is blasting? Describe the blasting practiced in surface mining for producing of 1000 T per day.
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Write short notes on: i) Bore hole deviation ii) Secondary blasting.
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Write notes on: i) Powered support ii) Side stitching.
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Write notes on: i) Wooden cog support ii) Timber support.
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Describe the supporting system for bord and pillar method.
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Write the method for withdrawal of supports with neat sketches.
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A coal seam of 3 m is being mined with shearer, face length is 150 m, panel length is 1.5 kilo metres, diameter and width of drum are 1.4 m and 0.45 m. Assume there are 3 cuts per shift of 8 hours. What will be the daily production?
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Write the working principle of Tunnel Boring Machine with neat sketches.
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A coal deposit of 2.5 m thick is being extracted by Bord and Pillar mining method, length of the blast hole and size of the faces are 1.8 m and 4.2 m × 2.5 m and pull per blast is 1 m. Determine output per blast?
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What are the modern methods for tunnelling and drifting? Describe them with neat sketch.
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Explain the procedure for deepening of shaft from 300 m to 350 m for reach below seam.
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Describe the method for dealing of water with neat diagram.
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Write the following: i) Ventilation arrangement ii) Lighting arrangement.
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Describe the modern method for driving the shaft of 6 m diameter.
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