longwall advancing mining

См. также в других словарях:

• Mining — This article is about the extraction of geological materials from the Earth. For the municipality in Austria, see Mining, Austria. For the siege tactic, see Mining (military). For name of the Chinese emperor, see Daoguang Emperor. Simplified… …   Wikipedia

• coal mining — Coal was very important in the economic development of Britain. It was used as fuel in the factories built during the Industrial Revolution and continued to be important until the 1980s. The main coalfields are in north east England, the north… …   Universalium

• Underground mining (soft rock) — refers to a group of underground mining techniques used to extract coal, oil shale and other minerals or geological materials from sedimentary ( soft ) rocks. Because deposits in sedimentary rocks are commonly layered and relatively less hard,… …   Wikipedia

• Underground mining equipment —   A coal cutting machine is used in conventional mining to undercut, top cut, or shear the coal face so that coal can be fractured easily when blasted. It cuts 9 to 13 feet into the bed.   Continuous auger machine is used in mining coalbeds less… …   Energy terms

• Retreat mining — is a term used to reference the final phase of an underground mining technique known as room and pillar mining. This involves excavating a room or chamber while leaving behind pillars of material for support. This excavation is carried out in a… …   Wikipedia

• Сплошные системы разработки —         (a. longwall advancing, longwall mining system; н. Strebbau als Vorbau; ф. methode d exploitation par tailles; и. sistema explotacion en avance, sistema explotacion avanzando) –          1) при подземной разработке угольных м ний системы …   Геологическая энциклопедия