World’s Biggest Machines for Digging

Posted in : Amazing

(added few years ago!)

Here’s a collection of the biggest machines for digging in the world. A tunnel boring machine (TBM) also known as a “mole”, is a machine used to excavate tunnels with a circular cross section through a variety of soil and rock strata. They can bore through anything from hard rock to sand.

Tunnel diameters can range from a meter (done with micro-TBMs) to 19.25 m to date. Tunnels of less than a meter or so in diameter are typically done using trenchless construction methods or horizontal directional drilling rather than TBMs. Take a look. Enjoy.

Tags : Machines, Digging

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(added few years ago!) / 2711 views
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