Tunnel Engineering(Civil Engineering ) Questions and Answers

Question 1. Which of the following are percussion drills? (i) Shot drill (ii) Diamond drill (iii) Wagon drill (iv) Churn drill
  1.    (i) and (ii) are correct
  2.    (iii) and (iv) are correct
  3.    (i) and (iv) are correct
  4.    (ii) and (iii) are correct
Explanation:-
Answer: Option B. -> (iii) and (iv) are correct
Question 2. Which of the following lining material is useful for shield driven tunnels in sub aqueous regions?
  1.    Stone masonry
  2.    Timber
  3.    Cast iron
  4.    Cement concrete
Explanation:-
Answer: Option C. -> Cast iron
Question 3. Drifters can be used to drill
  1.    Only up holes
  2.    Only down holes
  3.    Horizontal or up holes
  4.    Horizontal down or up holes
Explanation:-
Answer: Option D. -> Horizontal down or up holes
Question 4. Which of the following methods of tunneling is used for long tunnels at great depths?
  1.    Army method
  2.    Needle beam method
  3.    Austrian method
  4.    English method
Explanation:-
Answer: Option C. -> Austrian method
Question 5. The tunnels, the artificial underground passages are constructed for:
  1.    Highways
  2.    Railways
  3.    Sewerage
  4.    All the above
Explanation:-
Answer: Option D. -> All the above
Question 6. High pressure grouting is generally restored for concreting in the lining if the rock strata is:
  1.    Highly fissured
  2.    Poor
  3.    Likely to get seepage of water
  4.    All of the above
Explanation:-
Answer: Option D. -> All of the above
Question 7. Railway tunnels are generally
  1.    Polycentric
  2.    Rectangular
  3.    Parabolic
  4.    Circular
Explanation:-
Answer: Option A. -> Polycentric
Question 8. The length of the needle beam used in needle beam method of tunnelling is usually
  1.    2 m to 4 m
  2.    2.5 m to 6 m
  3.    4 m to 7 m
  4.    5 m to 6 m
Explanation:-
Answer: Option D. -> 5 m to 6 m
Question 9. The following operations are required for tunnelling in rocky terrain: 1.Removing the foul gases2.Marking the tunnel profile3.Setting up and drilling4.Checking misfire5.MuckingThe correct sequence is:
  1.    1, 2, 3, 4, 5
  2.    2, 3, 5, 4, 1
  3.    4, 2, 1, 3, 5
  4.    2, 3, 1, 4, 5
Explanation:-
Answer: Option D. -> 2, 3, 1, 4, 5
Question 10. The cut of a tunnel face is shown in given figure. This is called
  1.    Michigan cut
  2.    Burn cut
  3.    Fan cut
  4.    Horizontal cut
Explanation:-
Answer: Option A. -> Michigan cut
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