tunnelling shield

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• 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

• Shield (disambiguation) — Shield may refer to:Protection* Shield, a hand held protective device meant to intercept attacks * Electromagnetic shielding * Shielded cable * Energy shield * Deflector shield, a protective energy field * Heat shield, which protects a spacecraft …   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

• Marc Isambard Brunel — Sir Marc Isambard Brunel, by James Northcote Born Marc Isambard Brunel April 25, 1769(1769 04 25) …   Wikipedia

• Thames Tunnel — The Thames Tunnel is an underwater tunnel, built beneath the River Thames in London. 35 feet wide (11 m), 20 feet (6 m) high and 1,300 feet (396 m) long, it runs between Rotherhithe and Wapping at a depth of 75 feet (23 m) below the river s… …   Wikipedia

• Tunnel — This article is about underground passages. For other uses, see Tunnel (disambiguation). Underground tunnel for heatpipes between Rigshospitalet and Amagerværket in Denmark …   Wikipedia

• Peter W. Barlow — Peter William Barlow (1 February 1809 19 May 1885) was an English civil engineer, born at Woolwich, particularly associated with bridges (he designed the first Lambeth Bridge, a crossing of the River Thames in London), the design of tunnels and… …   Wikipedia

• Tunnel sous la Tamise — 51° 30′ 11″ N 0° 03′ 07″ W / 51.503, 0.052 …   Wikipédia en Français

• City and South London Railway — A picture of a City South London Railway train from the Illustrated London News, 1890 The City and South London Railway (C SLR) was the first deep level underground tube railway in the world,[1][note 1 …   Wikipedia

• Isambard Kingdom Brunel — Infobox Engineer image size = caption = Brunel before the launching of the Great Eastern name = Isambard Kingdom Brunel nationality = birth date =birth date|1806|4|9|df=y birth place = Portsmouth, United Kingdom death date =Death date and… …   Wikipedia

• 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