Room-and-pillar mining

Room-and-pillar mining
  The most common method of underground mining in which the mine roof is supported mainly by coal pillars left at regular intervals. Rooms are places where the coal is mined; pillars are areas of coal left between the rooms. Room-and-pillar mining is done either by conventional or continuous mining.
  U.S. Dept. of Energy, Energy Information Administration's Energy Glossary

Energy terms . 2014.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • Room and pillar — (also called bord and pillar) is a mining system in which the mined material is extracted across a horizontal plane while leaving pillars of untouched material to support the roof overburden leaving open areas or rooms underground. It is usually… …   Wikipedia

  • room-and-pillar — | ̷ ̷ ̷ ̷| ̷ ̷ ̷ ̷ adjective : bord and pillar * * * /roohm euhn pil euhr, room /, adj. Mining. noting a means of extracting coal or other minerals from underground deposits by first cutting out rooms, then robbing the pillars between them;… …   Useful english dictionary

  • room-and-pillar — /roohm euhn pil euhr, room /, adj. Mining. noting a means of extracting coal or other minerals from underground deposits by first cutting out rooms, then robbing the pillars between them; pillar and breast. Cf. longwall. * * * …   Universalium

  • room-and-pil|lar — «ROOM uhn PIHL uhr, RUM », adjective. of or designating a system of mining coal in which a series of rooms is cut into the coal bed, in each of which the miners leave columns of coal standing to help support the roof until they mine out a… …   Useful english dictionary

  • mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… …   Universalium

  • 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

  • pillar-and-breast — | ̷ ̷ ̷ ̷ ̷ ̷| ̷ ̷ adjective : bord and pillar * * * /pil euhr euhn brest /, adj. Mining. room and pillar …   Useful english dictionary

  • pillar-and-breast — /pil euhr euhn brest /, adj. Mining. room and pillar. * * * …   Universalium

  • 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

  • Coal mining — Men leaving a UK colliery at the close of a shift Surface coal mining in Wyo …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”