shield tunneling

См. также в других словарях:

• Shield — Shield, n. [OE. sheld, scheld, AS. scield, scild, sceld, scyld; akin to OS. scild, OFries. skeld, D. & G. schild, OHG. scilt, Icel. skj[ o]ldr, Sw. sk[ o]ld, Dan. skiold, Goth. skildus; of uncertain origin. Cf. {Sheldrake}.] 1. A broad piece of… …   The Collaborative International Dictionary of English

• Shield fern — Shield Shield, n. [OE. sheld, scheld, AS. scield, scild, sceld, scyld; akin to OS. scild, OFries. skeld, D. & G. schild, OHG. scilt, Icel. skj[ o]ldr, Sw. sk[ o]ld, Dan. skiold, Goth. skildus; of uncertain origin. Cf. {Sheldrake}.] 1. A broad… …   The Collaborative International Dictionary of English

• 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

• Metro Tunneling Group — Delhi MRTS Info Locale Delhi, India Transit type Rapid transit Number of lines 3 Number of stations 2 …   Wikipedia

• Hotspot Shield — Hotspot Shield …   Википедия

• 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

• 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

• Kolkata Metro — Infobox Public transit imagesize = 300px name = Kolkata Metro locale = Kolkata, India transit type = Rapid transit began operation = 1984 system length = 16.5 km lines = 2 stations = 17 ridership = track gauge = Broad Gauge operator = Metro… …   Wikipedia

• Kiba Station — nihongo|Kiba Station|木場駅|Kiba eki is a station on the Tokyo Metro Tozai Line in Kiba, Koto, Tokyo, Japan. Its designator is T 13. It is the station closest to the Museum of Contemporary Art and the nihongo|Kiba Train Garage|木場車両検修場|Kiba Sharyō… …   Wikipedia

• Tunnel de Shiziyang — Carte de la ligne à grande vitesse Guangzhou Shenzhen Hongkong Le tunel de Shiziyang est un tunel ferroviaire à grande vitesse sous l estuaire de la Rivière des Perles en Chine populaire[1] …   Wikipédia en Français