- hydraulic shield
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гидрощит
English-Russian dictionary of geology. 2011.
English-Russian dictionary of geology. 2011.
tunneling shield — ▪ engineering machine for driving tunnels in soft ground, especially under rivers or in water bearing strata. The problem of tunneling under a river had defied the engineering imagination for centuries because of the difficulty of preventing mud … Universalium
Tunnelling shield — A tunnelling shield is a protective structure used in the excavation of tunnels through soil that is too soft or fluid to remain stable during the time it takes to line the tunnel with a support structure of concrete, cast iron or steel. In… … Wikipedia
tunnels and underground excavations — ▪ engineering Introduction Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening … Universalium
Tower Subway — The Tower Subway is a tunnel beneath the River Thames in central London, close as the name suggests to the Tower of London. Its alignment runs between Tower Hill on the north side of the river and Vine Lane (off Tooley Street) to the south. Its… … Wikipedia
Tunnel boring machine — A tunnel boring machine that was used at Yucca Mountain nuclear waste repository 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.… … Wikipedia
Military equipment of Turkey — The military equipment of Turkey includes a wide array of arms, artilleries, large surface vessels, cannons, armored vehicles, mortars, unmanned vehicles and many different equipments. Contents 1 Historical development 1.1 General 1.2 1923 1950 … Wikipedia
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Prosthesis — For other uses, see Prosthesis (disambiguation). Not to be confused with Orthotic. A man with two prosthetic arms playing table football … Wikipedia
STS-121 — Infobox Space mission mission name = STS 121 insignia = STS 121 patch.png shuttle = Discovery crew members = 7 up, 6 down launch pad = LC 39B launch = July 4, 2006, 18:37:55 UTC landing = July 17, 2006, 13:14:43 UTC duration = 12 days 18 hours 37 … Wikipedia
Power take-off — A power take off (PTO) is a splined driveshaft, usually on a tractor or that can be used to provide power to an attachment or separate machine. It is designed to be easily connected and disconnected. The power take off allows implements to draw… … Wikipedia