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Longwall definition, noting or pertaining to a means of extracting coal or other minerals in an underground mine from a continuous face, the roof before the face being supported at intervals by temporary or movable artificial supports. See more.
LONGWALL MINING Overview. In the method of secondary extraction known as longwall mining a relatively long mining face (typically in the range 100 to 300m but may be longer) is created by driving a roadway at right angles between two roadways that form the sides of the longwall block, with one rib of this new roadway forming the longwall face.
Joy complete longwall systems represent the ultimate solution for highproduction longwall mining. Joy incorporates bestinbreed shearers, roof supports, face conveyors, stageloaders, crushers, and mobile belt tail pieces to deliver a complete longwall system that is in a class of its own.
Define longwall. longwall synonyms, longwall pronunciation, longwall translation, English dictionary definition of longwall. n a method of extracting coal from a mine whereby a long wall of coal is mined at one time ... Bis and Cougar both provide mining equipment hire services to the underground coal mining industry ... Australian miner ...
May 04, 2018· Having trouble understanding mining terminology? Here''s a comprehensive AZ guide of mining terms you need to know if you are considering investing in the mining industry or are just curious about how mining works. AC drilling: Air core drilling; Air blast drilling technique with limited coring capability.
DEFINITION OF HARDROCK MINING TERMS Adit A level, horizontal drift or passage from the surface into a mine. Borehole A vertical or inclined hole, used for ventilation from one level to another, or to carry waterlines or electrical wires. May be large enough for a .
Important Terms for Underground Mining . Adit: A horizontal or nearly horizontal passage driven into a hill or mountain. It does not go completely through the hill or mountain. Apex: The upper most terminal edge of the vein on the surface or its nearest point to the surface.
In order to protect the miners and equipment in an underground coal mine, much attention is paid to maintaining and supporting a safe roof or overhead ceiling for the extraction openings. Longwall mining is a method of underground mining believed to have been developed in Shropshire, England, near the end of the 17th cent.
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Longwall mining is a type of underground coal mining where a extended wall (normally about 250400 m long) of coal is mined in a sole slice (classically 12 m thick). The longwall "panel" (the slab of coal that is being mined) is normally 34 km long and 250400 m broad.
longwall WordReference English dictionary, questions, discussion and forums. All Free. ... Mining noting or pertaining to a means of extracting coal or other minerals in an underground mine from a continuous face, the roof before the face being supported at .
INTRODUCTION. The intended purpose of this Website . is to provide a reference document for all aspects of underground coal mining in Australia (though there may be references to overseas practices where these could be of interest).. The aim is to be of use to all levels of expertise from people with no, or at least a very limited knowledge of mining through to practicing mining engineers ...
Roomandpillar mining A method of mining flatlying ore deposits in which the minedout area, or rooms, are separated by pillars of approximately the same size. Rotary drill A machine that drills holes by rotating a rigid, tubular string of drill rods to which is attached a bit. Commonly used for drilling largediameter blastholes in open ...
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Full text of "A glossary of terms used in coal mining" See other formats ...
Glossary of Mining Terms : Glossary of Mining Terms ... Back The roof or upper part in any underground mining cavity. Backfill – Mine waste or rock used to support the roof after coal removal. ... Longwall Mining – One of three major underground coal mining methods currently in use. Employs a steal plow, or rotation drum, which is pulled ...
This is a partial glossary of coal mining terminology commonly used in the coalfields of the United Kingdom. Some words were in use throughout the coalfields, some are historic and some are local to the different British coalfields.
Glossary of Mining Terminology After Damp Gasses resulting from underground combustion, normally carbon monoxide. This is a loose term implying any fatal gas in a mine after an explosion or fire. Air Shaft A vertical opening into a mine for the passage of air. Airway Any passage in a mine along which an air current moves. Some passages are
Longwall mining synonyms, Longwall mining pronunciation, Longwall mining translation, English dictionary definition of Longwall mining. n a method of extracting coal from a mine whereby a long wall of coal is mined at one time
Gold Mining Terms Glossary. Download our PDF of Gold Mining Terms. adit – a horizontal or nearly horizontal underground passage coming to the surface at one end of a mine. alluvial – of or pertaining to alluvium; alluvial soil. alluvium – a deposit of sand, mud, etc., formed by flowing water.
The Glossary of Mining Terminology is a first attempt to improve Inuktitut terminology in the resource development field. The aim of the glossary is to clarify some technical words associated with resource development using everyday language. The Glossary of Mining Terminology is a living document that will continue to be improved as the industry develops and Inuktitut speakers become more ...
EIA Energy Glossary: Download this dictionary: Shortwall mining. A form of underground mining that involves the use of a continuous mining machine and movable roof supports to shear coal panels 150 to 200 feet wide and more than half a mile long. Although similar to longwall mining, shortwall mining is generally more flexible because of the ...
Many translated example sentences containing "longwall mining" – SpanishEnglish dictionary and search engine for Spanish translations. Look up in Linguee ... dynamic images of longwall mining activities. ... supplier of complete system solutions for underground coal mining worldwide and world market leader in the area of longwall equipment.
Start studying Underground Mining Terms. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Search. ... An underground opening at the bottom of a stope through which broken ore is extracted from the stope above. ... Longwall Mining. A method of mining coal in long, horizontal slices along straight faces or walls.
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