Tunnels: Types and Geological Investigation

Tunnels: Types and Geological Investigation

Geological Investigation
Tunnels are defined as an underground route or passage driven through the ground without causing a disturbance to the overlying rock or soil cover. Tunnels are made for different purposes and are categorised accordingly. Tunnelling has been practised on a large scale over the last two centuries in all major countries of the world for ensuring faster and better communications through roads and railways. At certain places like in high mountains, tunnelling is an absolute necessity to connect two countries or two different parts of the same country for increased access between the two locations. Metros can also be seen as a version of tunnelling and in fact, may involve a reasonable length of tunnels as the essential component. Excavations below the ground require very sound knowledge about the rock…
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