Which one of the following methods is adopted for permanent drainage of tunnels?

The drainage water intercepting the canal can be disposed of by passing the canal below the drainage in

A

aqueduct and syphon aqueduct

B

aqueduct and super passage

C

super passage and canal syphon

D

level crossing

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

Which one of the following linings is suitable for shield driven tunnels particularly in the sub-aqueous regions?

A

Brick lining

B

Stone lining

C

Timber line

D

Cast iron lining

The advantages of providing a pair of tunnels as compared to only one large highway tunnel is:

A

Economy in cost of construction

B

Avoidance of head on collisions

C

Provision of separate exit and entrance of two traffic streams

D

All the above

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

Pick up the mechanical ventilation method used for tunnels from the following:

A

Blowing fresh air by ducts to the face of tunnel

B

Exhausting foul air by ducts from the face of the tunnel and permitting fresh air through the tunnel

C

Blowing fresh air and exhausting foul air by ducts

D

All the above

The tunnels, the artificial underground passages are constructed for:

A

Highways

B

Railways

C

Sewerage

D

All the above

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

Railway tunnels are generally

A

Polycentric

B

Rectangular

C

Parabolic

D

Circular

The method of draining in the tunnels, is generally known as

A

Foredrainage

B

Dewatering

C

Permanent drainage

D

All of the above

Which one of the following methods is adopted for permanent drainage of tunnels?

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