Tunnel Engineering MCQ Questions & Answers

A) Holes are drilled by pneumatically operated rock drills B) One drill is required for each 4 to 5 m² force area C) The diameter of the bore hole at the deepest point should be 6 mm more than the diameter of the cartridge D) All of the above

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Answer: Option D

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Pick up the correct statement from the following:

A) The topographical maps of the Survey of India are useful in the mountainous region for tunnelling B) The height point on the ridge is fixed with the help of reciprocal ranging C) The accuracy of 1 in 10,000 is required for planimetric control D) All the above

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Answer: Option D

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If ‘N’ is the number of shafts used, then the total number of faces available for attacking the excavation and construction in tunnels are

A) 2N B) N + 2 C) 2N + 1 D) 2N + 2

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Answer: Option D

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For highways, tunnelling is preferred to if the open cut exceeds:

A) 10 meters depth B) 15 meters depth C) 20 meters depth D) 25 meters depth

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Answer: Option B

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Forepoling method is generally adopted for tunnelling in:

A) Soft ground B) Firm ground C) Running ground D) None of these

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Answer: Option A

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A tunnel is found more advantageous as compared to the alternate routes because it:

A) Remains free from snow B) Reduces the cost by reducing the route distance C) Reduces the maintenance cost D) All the above

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Answer: Option D

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The needle beam method of tunnelling
(i) Is suitable for soils in which roof can stand for few minutes without support
(ii) Is suitable for brick lining
(iii) Is suitable for concrete lining
(iv) Requires large number of trench jacks

A) Only (i) is correct B) (i), (ii) and (iv) are correct C) (i), (iii) and (iv) are correct D) (i) and (ii) are correct

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Answer: Option B

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Concrete lining is provided concurrently with the driving operation in case of

A) Rock terrain B) Soft rock C) Running soil D) None of these

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Answer: Option A

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In “full face” method of constructing tunnels, the first operation relates to

A) Removal of bottom portion B) Excavation of one drift in the centre C) Removal of top portion D) Excavation being done along the periphery

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Answer: Option D

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The following operations are generally employed for tunnelling in hard rock.
1.Removing ground water,
2.Loading holes and firing the explosive
3.Setting up and drilling
4.Grouting and lining
5.Removing muck
6.Ventilation and removing explosion dust
The correct sequence is:

A) 3, 2, 6, 5, 1, 4 B) 3, 4, 6, 1, 5, 2 C) 4, 1, 2, 3, 6, 5 D) 5, 4, 2, 1, 3, 6

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Answer: Option A

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Tunnel Engineering MCQ Questions & Answers | Civil Engineering