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 may also be used for microtunneling.
Bertha was designed and manufactured by Hitachi Zosen Sakai Works of Osaka, Japan, and is the world's largest earth pressure balance tunnel boring machine, at a cutterhead diameter of 57.5 feet (17.5 m) across.
The Best Products for Tough Jobs You won’t be alone when you buy a Robbins TBM. If you are planning to tunnel through rock, you want a TBM from a manufacturer who will support you as your partner throughout the project, anywhere in the world.
About Pilot Tube Guided Auger Boring Systems: By using the pilot tube trenchless method of installing underground utilities, water lines and sanitary sewers, you can reduce costs by 50% when compared to complicated laser controlled microtunneling systems.
Photo of United States Air Force tunnel boring machine at Little Skull Mountain, Nevada, USA, December 1982. There are many rumors of secret military tunnels in the United States.
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Underground Boring Equipment, Underground Boring Machines, Underground Boring Tools & Parts. - - - Prairie Dog Boring Equipment Celebrating 50 Years of the best value in utility boring.
A tunnel is an underground or underwater passage that is primarily horizontal. Relatively small-diameter ones carry utility lines or function as pipelines.
Valve Seat Boring Machine Model: BV60S uses a compact design and offers a competitive price with its feature and accuracy. It can easily process six-cylinder heads and light truck ...
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KAMY series of Roadheaders offers the best cutting performance in a wide range of rock formations. Equipped with geometrically optimized transverse or longitudinal cutter heads, these flexible machines can be used to excavate subway tunnels, road tunnels, railway tunnels and water tunnels without using explosives.