The most suitable soil for compressed air tunneling is________________?

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. In compressed air tunneling, the volume of free air provided is______________?

   A. 6 mJ per second per m2 of face area
   B. 6 m3 per minute per m2 of face area
   C. 20 m3 per minute per m2 of face area
   D. 6 m3 per hour per m2 of face area

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. 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. 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

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. 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

8. 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

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. 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