Showing posts with label Amazing Pictures. Show all posts
Showing posts with label Amazing Pictures. Show all posts
Monday, April 2, 2012
Tuesday, March 27, 2012
World’s Biggest Machines for Digging
Posted on 9:18 PM by Unknown
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.
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