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Quiz 3
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Q.1
Which one of the following linings is suitable for shield driven tunnels particularly in the sub-aqueous regions?
Brick lining
Stone lining
Timber line
Cast iron lining
Q.2
Circular section of tunnels is not suitable for
Carrying water
Non-cohesive soils
Tunnels driven by shield method
Placement of concrete lining
Q.3
The most commonly adopted pattern of cut holes is:
Horizontal wedge cut
Pyramid cut
Fan cut
All the above
Q.4
In the given figure drill holes, heading, mucking and benching are numbered as 1, 2, 3, 4; The correct sequence is:
4, 1, 2, 3
1, 2, 3, 4
4, 1, 3, 2
3, 4, 1, 3
Q.5
The cut of a tunnel face is shown in given figure. This is called
Michigan cut
Burn cut
Fan cut
Horizontal cut
Q.6
Which of the following methods of tunneling is used for long tunnels at great depths?
Army method
Needle beam method
Austrian method
English method
Q.7
The correct sequence of drilling equipment for increasing size of holes in tunnels is
Wagon drill, churn drill, shot drill
Wagon drill, shot drill, churn drill
Shot drill, churn drill, wagon drill
Churn drill, wagon drill, shot drill
Q.8
Which one of the following is a component of a shield for tunneling?
Liner plate
Trench jack
Stiffener
Cutting edge
Q.9
Railway tunnels are generally
Polycentric
Rectangular
Parabolic
Circular
Q.10
Drift method of tunneling is used to construct tunnels in
Soft grounds
Rock
Self supporting grounds
Broken grounds
Q.11
Concrete lining is provided concurrently with the driving operation in case of
Rock terrain
Soft rock
Running soil
None of these
Q.12
In Belgium method of tunnelling
Construction of side walls is completed before invert and roof arch are built
Construction of roof arch is completed before side walls and inverts are built
Construction of invert is completed before side walls and roof arch are built
Construction of invert and side walls is completed before roof arch is built
Q.13
Which one of the following is considered to be an advantage of the heading and benching method of tunnel construction?
It is suitable for construction in unstable rocks
In this method, it is easy to install timber support
Tunneling can be continuous and the work can be expedited
In case of excessive water, it is easy to take correct steps
Q.14
A tunnel is found more advantageous as compared to the alternate routes because it:
Remains free from snow
Reduces the cost by reducing the route distance
Reduces the maintenance cost
All the above
Q.15
Which of the following lining material is useful for shield driven tunnels in sub aqueous regions?
Stone masonry
Timber
Cast iron
Cement concrete
Q.16
The most suitable soil for compressed air tunnelling is
Silt
Sand
Clay
Gravel
Q.17
Ribs are used for strengthening and stiffening the liner plate for tunnels of diameter greater than
2 m
3 m
4 m
5 m
Q.18
Forepoling method is generally adopted for tunnelling in:
Soft ground
Firm ground
Running ground
None of these
Q.19
Which of the following is not a component of the shield?
Propelling jacks
Liner plate
Hood
Tail
Q.20
Which one of the following tunneling methods is used for laying underground sewers?
Needle beam method
Army method
German method
Italian method
Q.21
Which one of the following statements is not correct for heading and benching method of tunnelling?
Drilling and mucking can be done simultaneously
Benching provides a platform for working on heading
Removal of muck from the heading is very easy
None of these
Q.22
High pressure grouting is generally restored for concreting in the lining if the rock strata is:
Highly fissured
Poor
Likely to get seepage of water
All of the above
Q.23
Which one of the following linings is suitable for shield driven tunnels particularly in the sub-aqueous regions?
Brick lining
Stone lining
Timber line
Cast iron lining
Q.24
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:
1, 2, 3, 4
1, 4, 2, 3
2, 1, 4, 3
2, 4, 1, 3
Q.25
The advantages of providing a pair of tunnels as compared to only one large highway tunnel is:
Economy in cost of construction
Avoidance of head on collisions
Provision of separate exit and entrance of two traffic streams
All the above
Q.26
An overhead track on a large truss frame is required in case of car changer by
The grass hopper method
The passing track method
California crossing method
Dixon conveyor method
Q.27
Which one of the following statements is not correct with regard to heading and henching method of tunnelling?
Driving of tunnel is done in two portions of its section
Driving the top portion is done in advance of the bottom portion
The holes in head and bench are loaded together with explosive for blasting
Firing of head holes is done just before the bench holes are fired
Q.28
Which one of the following methods is generally adopted for tunnelling in firm ground
Full face method
Top heading and benching method
Drift method
All the above
Q.29
The difference of heights of the tunnels above rail tops of BG and MG tracks is kept
0.30 m
0.45 m
0.60 m
0.75 m
Q.30
Which one of the following methods is adopted for permanent drainage of tunnels?
Provision of longitudinal drains
Continuous open drains
Concrete lining
All the above
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