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tunneling by drilling and blasting

См. также в других словарях:

  • 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

  • drilling machinery —       equipment used to drill holes in the ground for such activities as prospecting, well sinking (petroleum, natural gas, water, and salt), and scientific explorations. Drilling holes in rock to receive blasting charges is an operation in… …   Universalium

  • Kanmon Tunnel — ▪ tunnel, Japan       world s first under ocean tunnel (tunnels and underground excavations), stretching 2.25 miles (about 3.5 km) between the islands of Honshu and Kyushu in Japan. During its construction (1936–44), nearly every known tunneling… …   Universalium

  • Nitroglycerin — This article is about the chemical properties of nitroglycerin and its use as an explosive. For medical and pharmacological applications, see glyceryl trinitrate (pharmacology). Nitroglycerin …   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

  • Graphite — For other uses, see Graphite (disambiguation). Graphite Graphite specimen General Category Native element mineral …   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

  • Robertson Tunnel — Infobox tunnel name = Robertson Tunnel caption = Robertson Tunnel is named mid platform in the Washington Park station line = westside MAX Blue Line location = Tualatin Mountains, Portland, Oregon, USA coord|45.510661|… …   Wikipedia

  • Huguenot Tunnel — The Huguenot Tunnel is a toll tunnel near Cape Town, South Africa. It extends the N1 through the Du Toitskloof mountains that separate Paarl from Worcester, providing a route that is safer, faster (between 15 and 26 minutes) and shorter (by 11… …   Wikipedia

  • Disasters — ▪ 2009 Introduction Aviation       January 23, Poland. A Spanish built CASA transport plane carrying members of the Polish air force home from a conference on flight safety in Warsaw crashes near the town of Miroslawiec; all 20 aboard are killed …   Universalium

  • Shaft construction — concerns the building of vertical openings such as Raises and Shafts. Shafts are vertical openings used for supplying equipment, personnel, and support systems to the horizontal tunnel where the pipeline is installed. They can be temporary or… …   Wikipedia

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