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

Related Mcqs:

1. The correct sequence of drilling equipment for increasing size of holes in tunnels is________________?

   A. wagon drill, churn drill, shot drill
   B. wagon drill, shot drill, churn drill
   C. shot drill, churn drill, wagon drill
   D. churn drill, wagon drill, shot drill

2. Which of the following lining material is useful for shield driven tunnels in sub aqueous regions ?

   A. stone masonry
   B. timber
   C. cast iron
   D. cement concrete

3. Which of the following methods of tunneling is used for long tunnels at great depths ?

   A. Army method
   B. Needle beam method
   C. Austrian method
   D. English method

4. Drift method of tunnelling is used to construct tunnels in__________________?

   A. soft grounds
   B. rock
   C. self supporting grounds
   D. broken grounds

5. Ribs are used for strengthening and stiffening the liner plate for tunnels of diameter greater than_____________________?

   A. 2 m
   B. 3 m
   C. 4 m
   D. 5 m

6. Circular section of tunnels is not suitable for________________?

   A. carrying water
   B. non-cohesive soils
   C. tunnels driven by shield method
   D. placement of concrete lining

7. In “full face” method of constructing tunnels, the first operation relates to______________?

   A. removal of bottom portion
   B. excavation of one drift in the centre
   C. removal of top portion
   D. excavation being done along the periphery

8. In the construction of Metro Railways, “Cut and Cover” method of construction is suitable in situations listed at________________?

   Consider the following situations

   1. Soil is soft
   2. Volume of existing surface traffic on the alignment is heavy
   3. Track is at a deeper level
   4. Water table is high

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

9. Which one of the following is considered to be an advantage of the heading and benching method of tunnel construction?

   A. It is suitable for construction in unstable rocks
   B. In this method, it is easy to install timber support
   C. Tunnelling can be continuous and the work can be expedited
   D. In case of excessive water, it is easy to take correct steps

10. What is the correct sequence of the following events of construction of a shaft in rock ?

    1. drilling and blasting
    2. timbering
    3. pumping
    4. mucking

    Select the correct answer using the codes given below Codes?

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