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.Management Sciences
Category: Tunnel Engineering
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
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
A good blast with a good yield is obtained if the cut hole is___________________?
A. normal to face
B. inclined at 45° to the face
C. inclined at 15° to the face
D. inclined at 30° to the face
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
The most suitable soil for compressed air tunneling is________________?
A. silt
B. sand
C. clay
D. gravel
Drift method of tunnelling is used to construct tunnels in__________________?
A. soft grounds
B. rock
C. self supporting grounds
D. broken grounds
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.
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
Drifters can be used to drill_________________?
A. only up holes
B. only down holes
C. horizontal or up holes
D. horizor„al, down or up holes
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