Mumbai University > Civil Engineering > Sem 8 > Construction Engineering

Marks: 5Marks

Equipment Available:

The type and nature of machinery available will decide the adaptability of tunnelling method

Method of sequence of excavation:

The method of providing timber supports will decide the size and sequence of progress of excavation

Size of tunnel:

If the tunnel is wide it will require more ground supports as compared to a narrow tunnel.

Type of Ground:

The method of tunnelling to be adopted will heavily depend on the nature and kind of soil such as running ground, soft ground, firm ground and self supporting ground.

Geological and hydrological conditions

Cross section and length of continuous tunnel

local experience and time cost considerations

limit of surface disturbance