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Civil Engineering :: Tunneling

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

  2. A.
    horizontal wedge cut
    B.
    pyramid cut
    C.
    fan cut
    D.
    V-cut
    E.
    All the above.

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

  4. A.
    Brick lining
    B.
    stone lining
    C.
    timber line
    D.
    cast iron lining
    E.
    concrete lining.

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  5. In case of railways,

  6. A.
    a detour round the hill is preferred
    B.
    a open cut is preferred
    C.
    tunnelling is preferred
    D.
    All the above.

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  7. 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:

  8. A.
    4 1 3 2
    B.
    1 4 2 3
    C.
    2 3 1 4
    D.
    3 2 4 1

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  9. 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 :

  10. 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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  11. Pick up the mechanical ventilation method used for tunnels from the following:

  12. A.
    blowing fresh air by ducts to the face of tunnel
    B.
    exhausting foul air by ducts from the face of the tunnel and permitting fresh air through the tunnel
    C.
    blowing fresh air and exhausting foul air by ducts
    D.
    all the above.

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  13. Which one of the following methods of tunnelling does not require the use of time bearing :

  14. A.
    Linear plate method
    B.
    Shield method
    C.
    Compressed air method
    D.
    Mechanical tunneler i.e. mole method
    E.
    All the these.

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

  16. A.
    10 metres depth
    B.
    15 metres depth
    C.
    20 metres depth
    D.
    25 metres depth.

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  17. 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 :

  18. A.
    1 2 3 4 5
    B.
    2 3 5 4 1
    C.
    4 2 1 3 5
    D.
    2 3 1 4 5

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

  20. A.
    economy in cost of construction
    B.
    avoidance of head on collisions
    C.
    provision of separate exit and entrance of two traffic streams
    D.
    facility in carrying out repairs
    E.
    All the above.

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