How to construct Earth Tunnels?
In this article, we will discuss the procedure of the construction of the Earth Tunnels in a stepwise manner. It will be useful to you all in understanding and remembering the procedure.
We would be studying the construction method of tunnel in two types of soils:
- Firm soil
- Soft soil
Excavation of the ground from below. It is similar to the process used in mining.
Check the type and bearing capacity of soil. The method of construction would depend upon the ability of soil to support itself temporarily during construction.
It also depends on the ability of the soil to withstand the magnitude of pressure imposed on it during construction.
It is important to understand the factors that affect these parameters. They are as follows:
- Depth of the tunnel
- Diameter of the tunnel
- Properties of the soil
- Ground water table
Support to the Tunnel
Most of the time, the tunnel requires temporary support during construction and a permanent support after construction.