During a long journey in the mountains by train and car, you must have completed your journey through many long and short tunnels. But have you ever wondered how tunnels are made in the mountains? Today we will tell you through which techniques tunnels are made by cutting the mountains.
Tunnel
Let me tell you that the PM Narendra Modi On the occasion of Kargil Vijay Diwas, the first blast of the Shinkun La tunnel project was carried out. Under this project, the world’s highest tunnel will be built here at a height of 15,800 feet. But now the question is how a tunnel is built at such a height of the mountains and how is it constructed. Because it is not easy to make a tunnel by cutting the mountains.
How a tunnel is made
Let us tell you that the drill and blast method is used to make tunnels on mountains. According to the information, through this technique, space is created by blasting the mountains. After which it is gradually given the shape of a tunnel by blasting. However, this technique is not so easy, because during this there is a risk that a large part of the rock may slide. This is the reason that sometimes another method is adopted looking at the condition of the mountains.
tunnel boring machine
Another way of making tunnels in mountains is tunnel boring machine. In this method, a hole is made in the rock and explosives are filled in it and then it is deepened by blasting. However, this technique is expensive and in this, only 1 to 2 meters of depth is created after one blast.
Which technology on which mountain?
Now the question is which technique will be used to make the tunnel? Let us tell you that which technique will be used to make the tunnel in the mountains, drill and blast method or tunnel boring machine, depends on the height of the mountain and its nature. Because when an empty space is created in the mountain, the rock breaks and its part gets separated. Often the drill and blast method is used for places like the Himalayas including Jammu and Kashmir and Uttarakhand.
Now you must be wondering how the tunnel is shaped while digging it. Let us tell you that once the tunnel is dug, it is shaped and concrete is used on the inner walls. Apart from this, steel frame i.e. steel support is used to strengthen the tunnel. Apart from mountains, other methods are used to make tunnels in soil and other parts. These include pipe tunnel and box jacking method.
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