JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech IV DEEP SEAM MINING Previous Question Paper (May - 2019 - R15)
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
List the objectives of Geological Prospecting?
Answer
The primary objectives of geological prospecting are to identify the location, extent, and quality of mineral deposits, and to gather sufficient data on the geological structure and rock mass properties to assess the economic viability and technical feasibility of mining operations.
List the Classification of Coal Deposits?
Answer
Coal deposits are generally classified based on their rank (degree of coalification) and geological occurrence:
- Rank: Lignite, Sub-bituminous, Bituminous, and Anthracite.
- Geological occurrence: Flat or gently dipping seams, inclined/steeply dipping seams, and thick/massive seams.
Define the term "Locked up Pillar"?
Answer
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List the challenges for Extraction of Coal pillar in Deep seam deposits?
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List the causes of Coal Bumps in Deep seated Deposits?
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Explain the term “Continuous tele monitoring”?
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List the Continuum methods of Numerical Modeling?
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List the application of Numerical Modeling for Underground Coal Mines?
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List the pre-mining stresses in the rock?
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Define the term "Convergence"?
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Part B
Explain the Pitting method of Prospecting.
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Explain the distribution pattern of coal deposits.
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Explain the Geo-physical methods of prospecting.
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Explain the Godavari valley coal field.
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Explain the Underground coal mining in India – Technological options and challenges ahead.
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Explain the draw back and improving production in Bord and Pillar method.
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Explain the Challenges to improve production in Long wall mining.
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Explain the Continues miner technology stability analysis in Deep seam mines.
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Describe design and development of Long wall mine in Deep Seam deposits.
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Explain the various methods of Transport of men and materials in Deep Mines.
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Describe design and development of BG Panel in Deep seam deposits.
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Explain the control techniques for high degree of emission of gases in Deep seams.
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Explain the BOUNDARY ELEMENT METHOD (BEM).
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State framing of SSR with scientific methods using numerical modeling.
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Explain the Discrete Element Method (DEM).
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Explain the Finite Element Method (FEM).
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List the factors affecting the Convergence.
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Explain the terms “Creep” and “Heave”.
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List the factors affecting the convergence in Gate Roads.
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List the various factors for Load shared by the face supports.
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