If ‘N’ is the number of shafts used, then the total number of faces available for attacking the excavation and construction in tunnels are

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If ‘N’ is the number of shafts used, then the total number of faces available for attacking the excavation and construction in tunnels are

1.2 N

2.N + 2

3.2 N + 1

4.2 N + 2

Posted Date:-2022-09-24 23:25:38

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  4. Circular section of tunnels is not suitable for
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  6. Diverting water entering tunnel is
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  10. First tunnel built in the world was in Babylon, in the year
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  12. For B.G. single track, the section of the tunnel must have a width
  13. For full face method, the excavation to be done generally divided into
  14. For highways, tunnelling is preferred to if the open cut exceeds
  15. For mucking the method employed is
  16. For tunnels exceeding 300 m in length, the grade should be provided below
  17. Forepoling method is generally adopted for tunneling in
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  19. In Belgium method of tunneling
  20. In case of drift method of tunnelling, the drift may be excavated at
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  41. The most suitable soil for compressed air tunneling is
  42. The tunnels, the artificial underground passages are constructed for
  43. To obtain the required shape of the tunnel section, we use
  44. Which of the following is not a component of the shield?
  45. Which of the following lining material is useful for shield driven tunnels in sub aqueous regions?
  46. Which one of the following is a component of a shield for tunneling?
  47. Which one of the following is a method of tunneling in firm soft strata?
  48. Which one of the following is a method tunnelling in running ground?
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  54. Which one of the following methods is adopted permanent drainage of tunnels
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  57. Which one of the following methods of tunneling is used for long tunnels at great depths?
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  59. Which one of the following statements is not correct with regard to heading and hunching method of tunnelling.
  60. Which one of the following tunneling methods is used for laying underground sewers?
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