Civil Engineering - Tunnelling

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Exercise : Tunnelling - Section 1
  • Tunnelling - Section 1
1.
Which one of the following statements is not correct for heading and benching method of tunnelling ?
Drilling and mucking can be done simultaneously
Benching provides a plateform for working on heading
Removal of muck from the heading is very easy
None of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

2.
The difference of heights of the tunnels above rail tops of BG and MG tracks is kept
0.30 m
0.45 m
0.60 m
0.75 m
Answer: Option
Explanation:
No answer description is available. Let's discuss.

3.
In case of drift method of tunnelling, the drift may be excavated at
the centre
the bottom
the top
the side
All of the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

4.
A tunnel is found more advantageous as compared to the alternate routes because it:
remains free from snow
reduces the cost by reducing the route distance
reduces the maintenance cost
avoids interference with surface rights
All the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

5.
For B.G. single track railway, the height of the tunnel above top of rails should be
5.5 m to 5.8 m
5.8 m to 6.2 m
6.7 m to 7.3 m
7.3 m to 7.5 m
Answer: Option
Explanation:
No answer description is available. Let's discuss.