Are you searching for GTU Old Question Papers of 152205 Underground Coal Mining ? You can see here summer 2015 question paper of B.E 5th Semester 152205 Underground Coal Mining GTU. Read the passage provided below and get a copy of this question paper in text format as given below.
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER– V
EXAMINATION – SUMMER 2015
Subject Code: 152205
Date:19/05/ 2015
Subject Name: Underground coal mining
Time: 02:30 pm to 05:00 pm
Total Marks: 70 Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) Give details on retreating methods of Long wall system 07
(b) What is Pneumatic stowing & mechanical stowing? Explain it 07
Q.2 (a) Write notes on : (1) Room & pillar method 07
(b) Describe behavior of roof during depillaring with caving 07
OR
(b) What are the precautions against fire during and after depillaring operation? 07
Q.3 (a) Explain meaning of following terms : (1) incubation period , (2) Cyclic Long wall and non cyclic long wall methods. 07
(b) What are the factors considered for selection of optimum length of a long Wall face?
OR
Q3 (a) Explain with sketch : Barrier and preparatory stopping in Board and Pillar Method of mining.
(b) Write merit and demerit of pneumatic and hydraulic stowing 07
Q.4 (a) What are the disadvantages of stowing methods? 07
(b) What do you understand by Barrier and preparatory stoppings? 07
OR
Q.4 (a) Which Type of machinery is used in u/g mining? And what is cycle of operation? 07
(b) W hat is Pillar extraction and safety? Explain it 07
Q.5 (a) How to handling and storage of material on surface and underground face arrangements? 07
(b) What do you understand by Organization on a longwall Face? 07
OR
Q.5 (a) Classify various underground coal mining methods 07
(b) Describe depillaring system for a coal seam 5.5 m thick in board & pillar Methods. Also explain sequence of pillars extracted with sketch. 07
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER– V
EXAMINATION – SUMMER 2015
Subject Code: 152205
Date:19/05/ 2015
Subject Name: Underground coal mining
Time: 02:30 pm to 05:00 pm
Total Marks: 70 Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) Give details on retreating methods of Long wall system 07
(b) What is Pneumatic stowing & mechanical stowing? Explain it 07
Q.2 (a) Write notes on : (1) Room & pillar method 07
(b) Describe behavior of roof during depillaring with caving 07
OR
(b) What are the precautions against fire during and after depillaring operation? 07
Q.3 (a) Explain meaning of following terms : (1) incubation period , (2) Cyclic Long wall and non cyclic long wall methods. 07
(b) What are the factors considered for selection of optimum length of a long Wall face?
OR
Q3 (a) Explain with sketch : Barrier and preparatory stopping in Board and Pillar Method of mining.
(b) Write merit and demerit of pneumatic and hydraulic stowing 07
Q.4 (a) What are the disadvantages of stowing methods? 07
(b) What do you understand by Barrier and preparatory stoppings? 07
OR
Q.4 (a) Which Type of machinery is used in u/g mining? And what is cycle of operation? 07
(b) W hat is Pillar extraction and safety? Explain it 07
Q.5 (a) How to handling and storage of material on surface and underground face arrangements? 07
(b) What do you understand by Organization on a longwall Face? 07
OR
Q.5 (a) Classify various underground coal mining methods 07
(b) Describe depillaring system for a coal seam 5.5 m thick in board & pillar Methods. Also explain sequence of pillars extracted with sketch. 07
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