Exercise: Tunnelling

Questions for: Tunnelling

The difference of heights of the tunnels above rail tops of BG and MG tracks is kept
A:
0.30 m
B:
0.45 m
C:
0.60 m
D:
0.75 m
Answer: C
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Which one of the following statements is not correct for heading and benching method of tunnelling ?
A:
Drilling and mucking can be done simultaneously
B:
Benching provides a plateform for working on heading
C:
Removal of muck from the heading is very easy
D:
None of these.
Answer: C
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