1.
Which one of the following is not a permanent drainage work
A
providing longitudinal drains
B
concrete lining
C
grouting with cement chemicals
D
pumping water
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Which one of the following is not a permanent drainage work
providing longitudinal drains
concrete lining
grouting with cement chemicals
pumping water
Which one of the following is not a method of tunnelling in running ground?
Flying arch method
Liner plate method
Top heading and benching method
Needle beam method
Which one of the following is not a method of tunnelling in firm soft strata?
Full face method
Top heading and benching
Drift method
Needle beam method
Which one of the following is not a method of supporting roof and sides in multiple drift method of tunnelling?
German method
Austrian method
Japanese method
Belgium method
Which one of the following is not a drilling pattern adopted in tunnelling?
V-cut
Cylinder cut
Vertical wedge cut
Fan cut
The method of lining in tunnels is
brick masonry lining
stone masonry lining
concrete lining
all the above
The method in which roof arch is completed before excavating a trench for laying muck track is known as
American method
English method
Belgium method
Austrian method
The method employing steel lined plates and air compressors for driving them is known as
needle beam method
tunnelling with liner plates
shield method
none of the above
The length of the first tunnel built in the world of Babylon in the year 2000 BC was
300 m
500 m
700 m
900 m
The explosive used in tunnelling is
blastic gelatine
semi-gelatine
ammonia dynamite
any one of the above
The explosive recommended for blasting a soft rock is
blasting gelatine
special gelatine 9 to 40%
ammonia dynamite
semi-gelatine
The drilling pattern in which 3 to 4 converging holes are so directed that they meet at point further is known as
fan cut
pyramid cut
V-cut
burn cut
Pack grouting with concrete is required between
rock and concrete lining
steel lining and concrete lining
both a and b
none of the above
Mechanical ventilation method used in tunnels consists of
blowing fresh air
providing exhaust air by ducts
both a and b
none of the above
In tunnel, unless special provision is made for proper drainage, the gradient should not be more than
5%
7%
10%
12%
In case of tunnels in hilly areas to align tunnel ends use
direst ranging
reciprocal ranging
triangulation
any one of the above
For mucking the method employed is
hauling on rails
hauling on pneumatic tyres
using conveyers
all the above
Drift method of tunnelling is used to construct tunnel in
soft ground
running ground
rocks
broken grounds
Diverting water entering tunnel is
predrainage work
permanent drainage work
drainage work during construction
all the above
First tunnel built in the world was in Babylon, in the year
2000 BC
200 BC
200 AD
600 AD