Which one of the following tunnelling methods is used for laying under ground sewers ?

Related Mcqs:

1. 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

2. Which one of the following is a component of a shield for tunnelling ?

   A. liner plate
   B. trench jack
   C. stiffener
   D. cutting edge

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

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

4. 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

5. 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.

6. 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

7. 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

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

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

9. 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

10. Which of the following are percussion drills ?

    (i) shot drill
    (ii) diamond drill
    (iii) wagon drill
    (iv) churn drill
    select correct answer?

    A. (i) and (ii) are correct
    B. (iii) and (iv) are coiTect
    C. (i) and (iv) are correct
    D. (ii) and (iii) are correct