tunnelling technique

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• New Austrian Tunnelling method — NATM redirects here. For other uses, see NATM (disambiguation). The New Austrian Tunnelling method (NATM) was developed between 1957 and 1965 in Austria. It was given its name in Salzburg in 1962 to distinguish it from old Austrian tunnelling… …   Wikipedia

• Simplon Tunnel — ▪ tunnel, Italy Switzerland       one of the longest railway tunnels in the world, about 12 1/2 miles (20 km) from Iselle, Italy, to Brig, Switz., and one of history s great engineering feats. The Simplon Pass was an important trade route between …   Universalium

• 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

• Organic semiconductor — STM image of self assembled supramolecular chains of the organic semiconductor Quinacridone on Graphite. An organic semiconductor is an organic material with semiconductor properties. Single molecules, short chain (oligomers) and organic polymers …   Wikipedia

• Coulomb blockade — Schematic representation of an electron tunnelling through a barrier In physics, a Coulomb blockade (abbreviated CB), named after Charles Augustin de Coulomb s electrical force, is the increased resistance at small bias voltages of an electronic… …   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

• 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

• Marmaray — 41°01′10″N 28°59′48″E / 41.01944, 28.99667 …   Wikipédia en Français

• Faster-than-light — (also superluminal or FTL) communications and travel refer to the propagation of information or matter faster than the speed of light. Science fiction style space travel, dubbed true FTL, defies known physics.Under the special theory of… …   Wikipedia

• Mt. Lebanon Tunnel — South end Overview Line 42 South Hills Village Location Allegheny County, Pennsylvania Status op …   Wikipedia

• Rapid transit technology — The technology of rapid transit has changed over the years:Train size and motive powerSome urban rail lines are built to the full size of main line railways; others use smaller tunnels, restricting the size and sometimes the shape of the trains… …   Wikipedia