A. soft grounds
B. rock
C. self supporting grounds
D. broken grounds
Related Mcqs:
- 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 - Which one of the following tunnelling methods is used for laying under ground sewers ?
A. Needle beam method
B. Army method
C. German method
D. Italian method - 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 - Which one of the following is a component of a shield for tunnelling ?
A. liner plate
B. trench jack
C. stiffener
D. cutting edge - 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 - 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 - 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 - 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 - If ‘N’ is the number of shafts used, then the total number of feces available for attacking the excavation and construction in tunnels are_________________________?
A. 2N
B. N + 2
C. 2 N + 1
D. 2 N + 2 - 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
