Download GTU BE/B.Tech 2019 Summer 6th Sem New 2162202 Underground Metal Mining Question Paper

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Subject Code: 2162202
GUJARAT TECHNOLOGICAL UNIVERSITY

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SEMESTER-VI(NEW) - EXAMINATION - SUMMER 2019
Subject Name: Underground Metal Mining
Time: 10:30 AM TO 01:00 PM

Instructions:

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1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1

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(a) Define the following term: Cross cut, Chute, and Garages. MARKS 03
(b) Describe classification of different stopping methods. MARKS 04
(c) Explain room and pillar method with neat sketch. MARKS 07

Q.2

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(a) Describe present status of Indian metal mining industry. MARKS 03
(b) Define the following term: Stope, Stoping, Crown pillar and Grizzlies. MARKS 04
(c) Explain top slicing stopping method with neat sketch. MARKS 07

OR

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Explain sub-level stopping method with neat sketch. MARKS 07

Q.3
(a) Explain how working is carried out in metal mine when ore body is wide. MARKS 03

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(b) Describe the basic fundamental of cut & fill method. MARKS 04
(c) Explain under hand stopping method with neat sketch. MARKS 07

OR

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Explain ore and waste bin with neat sketch. MARKS 03

Q.4
(a) Differentiate between pneumatic and mechanical method of backfilling. MARKS 04
(b) Explain over hand stopping method with neat sketch. MARKS 07

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Q.5
(a) Describe skip-pockets in details. MARKS 03
(b) Explain underground crushing. MARKS 04
(c) Discuss the various points to be considered for selection of stopping methods. MARKS 07

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OR

List out the different types of backfilling methods used in metal mining. MARKS 03

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Q.5
(a) Explain hydraulic backfilling. MARKS 04
(b) Describe blast hole and vertical crater retreat method. MARKS 07
(c) Explain stopping of super-imposed veins and parallel ore bodies. MARKS 03

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Q.5
(a) Explain haulage and dumping. MARKS 04
(b) Write a note on construction of mine portal. MARKS 07
(c) Explain secondary breaking in brief. MARKS 03

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OR

Describe design and construction of draw points. MARKS 04

Write a note on recovery and dilution. MARKS 07

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Explain stope layouts and stop preparation work in underground metal mining. MARKS 03

Date: 10/05/2019
Total Marks: 70

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