A. liner plate
B. trench jack
C. stiffener
D. cutting edge
0
![]()
Drift method of tunnelling is used to construct tunnels in__________________?
0
![]()
In Belgium method of tunneling _________________?
A. soft grounds
B. rock
C. self supporting grounds
D. broken grounds
0
![]()
Ribs are used for strengthening and stiffening the liner plate for tunnels of diameter greater than_____________________?
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
0
![]()
If ‘D’ is the diameter of tunnel in meters, then the thickness of lining in mm, as per the empirical formula is given by_________________?
A. 2 m
B. 3 m
C. 4 m
D. 5 m
0
![]()
Which of the following is not a component of the shield ?
A. 42 D
B. 82 D
C. 104 D
D. 124 D
0
![]()
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. propelling jacks
B. liner plate
C. hood
D. tail
0
![]()
Circular section of tunnels is not suitable for________________?
A. 2N
B. N + 2
C. 2 N + 1
D. 2 N + 2
0
![]()
As compared to a single free face, if a charge of explosive is placed equidistant from two faces, then the yield___________________?
A. carrying water
B. non-cohesive soils
C. tunnels driven by shield method
D. placement of concrete lining
0
![]()
What is the correct sequence of the following events of construction of a shaft in rock ?
A. remains same
B. decreases
C. increases by 2.25 times
D. increases by 3.5 times
0
![]()
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