книги Наука, техника, медицина Техника Строительство Градостроительство и архитектура

Tunnel boring machine

Код 3290590

  • ISBN: 978-5-5145-3142-4

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High Quality Content by WIKIPEDIA articles! 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 metre (done with micro-TBMs) to 19.25 m to date. Tunnels of less than a metre or so in diameter are typically done using trenchless construction methods or horizontal directional drilling rather than TBMs.

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ISBN: 978-5-5145-3142-4

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