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

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Q. The following operations are required for tunnelling in rocky terrain :

1. Removing the foul gases
2. Marking the tunnel profile
3. Setting up and drilling
4. Checking misfire
5. Mucking

The correct sequence is :

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Q. The advantages of providing a pair of tunnels as compared to only one large highway tunnel is :

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Q. Which one of the following statements is not correct in respect of setting of an inclined tunnel:

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Q. Forepoling method is generally adopted for tunnelling in :

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

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Q. The concentration of the dust particles of the size 0.5 to 5 microns adjacent to the working face should not be more than

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Q. Which one of the following statements is not correct with regard to heading and hench-ing method of tunnelling.

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Q. The most commonly adopted pattern of cut holes is :

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Q. Which one of the following linings is suitable for shield driven tunnels particularly in the subaqueous regions :

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Q. In case of railways,

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Q. The following tunnels were constructed in different countries for different purposes :

1. Emperor Claudius built the first Roman tunnel
2. The first highway tunnel was constructed in Hungary
3. The first underground railway tunnel was constructed in Great Britain
4. The first navigational tunnel was constructed in France.

The correct chronological development of these tunnels is:

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Q. 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 :

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