ExamAdept

Which one of the following methods is adopted for permanent drainage of tunnels :

A:

provision of longitudinal drains

B:

continuous open drains

C:

concrete lining

D:

grouting with cement or chemicals

Answer: E

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For hauling muck from the tunnel, the following type of muck-car is used :

A:

muck box

B:

balle-ship

C:

side dump car

D:

U-bottom

Answer: E

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High pressure grouting is generally restored for concreting in the lining if the rock strata is:

A:

highly fissured

B:

poor

C:

likely to get seepage of water

D:

All of the above.

Answer: D

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The length of the needle beam used in needle beam method of tunnelling is usually

A:

2 m to 4 m

B:

2.5 m to 6 m

C:

4 m to 7 m

D:

5 m to 6 m

Answer: D

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In the given figure drill holes, heading, mucking and benching are mumbered as 1, 2, 3, 4 The correct sequence is :

A:

4 1 2 3

B:

1 2 3 4

C:

4 1 3 2

D:

3 4 1 3

Answer: C

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Questions for: Tunnelling