The needle beam method of tunneling______________?

Related Mcqs:

1. Assertion A : English method of tunneling requires more time as compared to other methods of tunneling. Reason R : In English method of tunneling, the masons and excavators have to work alternately/

   A. Both A and R are true and R is the correct explanation of A.
   B. Both A and R are true and R is not the correct explanation of A.
   C. A is true but R is false.
   D. A is false but R is true.

2. 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

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

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

4. In Belgium method of tunneling _________________?

   A. construction of side walls is completed before invert and roof arch are built
   B. construction of roof arch is completed before side walls and invert are built
   C. construction of invert is completed before side walls and roof arch are built
   D. construction of invert and side walls is completed before roof arch is built

5. American method of tunneling________________?

   i) is suitable for large sized tunnels
   ii) is no,’ suitable for railway or highway tunnel’s
   iii) requires heavy timbers
   select the correct answer?

   A. only (i) is correct
   B. (i) and (iii) are correct
   C. (ii) and (iii) are correct
   D. (i) and (ii) are correct

6. 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

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. 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

9. What is the correct sequence of the following events in rock tunnelling?

   1. marking tunnel profile
   2. loading explosives and blasting
   3. checking misfire
   4. mucking
   5. removing foul gas
   6. setting up and drilling
   7. guniting
   Select the correct answer using the codes given below
   Codes ?

   A. 1,6,5,3,4,2,7
   B. 1,2,6,3,5,4,7
   C. 1, 6,2, 5,4, 3, 7
   D. 1,6,2,5,3,4,7

10. Which of the following is not a component of the shield ?

    A. propelling jacks
    B. liner plate
    C. hood
    D. tail