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

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 6th Sem New 2162202 Underground Metal Mining Previous Question Paper

1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VI(NEW) ? EXAMINATION ? SUMMER 2019
Subject Code:2162202 Date:10/05/2019
Subject Name:Underground Metal Mining
Time:10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.


MARKS

Q.1 (a) Define the following term: Cross cut, Chute, and Garages. 03
(b) Describe classification of different stopping methods. 04
(c) Explain room and pillar method with neat sketch. 07
Q.2 (a) Describe present status of Indian metal mining industry. 03
(b) Define the following term: Stope, Stoping, Crown pillar and Grizzlies. 04
(c) Explain top slicing stopping method with neat sketch. 07
OR
(c) Explain sub-level stopping method with neat sketch. 07
Q.3 (a) Explain how working is carried out in metal mine when ore body is wide. 03
(b) Describe the basic fundamental of cut & fill method. 04
(c) Explain under hand stopping method with neat sketch. 07
OR
Q.3 (a) Explain ore and waste bin with neat sketch. 03
(b) Differentiate between pneumatic and mechanical method of backfilling. 04
(c) Explain over hand stopping method with neat sketch. 07
Q.4 (a) Describe skip-pockets in details. 03
(b) Explain underground crushing. 04
(c) Discuss the various points to be considered for selection of stopping
methods.
07

OR
Q.4 (a) List out the different types of backfilling methods used in metal mining.
Explain hydraulic backfilling.
03
(b)
Describe blast hole and vertical crater retreat method.
04
(c) Explain stopping of super-imposed veins and parallel ore bodies. 07
Q.5 (a) Explain haulage and dumping. 03
(b) Write a note on construction of mine portal. 04
(c) Explain secondary breaking in brief. 07
OR

Q.5 (a) Describe design and construction of draw points. 03
(b) Write a note on recovery and dilution. 04
(c) Explain stope layouts and stop preparation work in underground metal
mining.
07

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