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Advantages And Disadvantages Of Boring Machine

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A tunnel boring machine (TBM) is a machine used for excavating tunnels with a circular pattern through a variety of soil and rock. They can dig through anything from hard rock, soft soil to sand. The TBMs tunnel diameters can range from one meter to 19.25 meters. Tunnel boring machines are used as an alternative to conventional methods like drilling and blasting and hand mining. The major disadvantages of TBMs is the upfront cost because they are expensive to construct and can be difficult to transport. Nonetheless, The advantages of using TBMs is to limiting the disturbance to the surrounding ground while drilling and producing a smooth tunnel wall with a high regard of safety measures. Besides, as modern tunnels become longer, the cost of tunnel boring machines compared to drill and blast is actually less, because of the advance technologies that is been put in to TBMs. TBMs also enhance the efficiency and the results while excavating with TBMs are much better than conventional methods in the way of how safe and quitter they are compared to other methods and that is why TBMs are more suitable to use in heavily urbanized areas.
In general, tunnel boring machine is like a train that digs its own path. It consists of a drilling head that digs into the soil in front of it while laying down pre-cast concreate segments or support rings every time that the head advances to support the tunnel. The rest of consists of inside compartments which are trailing support decks known as

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