2009-8-26 Frank shaft is mining both Merensky reef and UG2 reef. The Merensky orebody is almost depleted and this was the reason for starting to mine the UG2 ore reserves. It was decided to mine the UG2 orebody with trackless equipment using a bord and pillar mining method. Frank shaft has been mining the UG2 orebody for nearly 5 years.
2010-5-13 Bord and Pillar method of mining. Bord and Pillar method of mining is one of the oldest methods of mining. The success of Bord and Pillar mining is selecting the optimum pillar size. If the pillars are too large, then the extraction ratio decrease leading to less production and profitability and if the pillars are too small it
2011-7-28 Coal Mining Methods Underground Mining Longwall Room and Pillar Mining Longwall mining and room-and-pillar mining are the two basic methods of mining coal underground, with room-and-pillar being the ... roof supports protect the workers and equipment located along the face, while the roof is
Bord-and-pillar: Bord-and-pillar, or room-and-pillar, is the oldest underground mining technique and was common in NSW before longwall mining began in the 1960s. This method uses a grid of tunnels and involves progressively cutting panels into the coal seam whilst leaving behind pillars of
2011-3-3 organized a Hard Rock Room and Pillar Mining Best Practice Industry Workshop. Eleven different mining companies and mining operations from Southern Africa shared the details of how they organize their individual mining operations and what productivity they obtained from the mechanized equipment. There were also presentations on the history and ...
Home / Bord Pillar / Equipment / CONTINUOUS MINER. CONTINUOUS MINER . Equipment 0 Comment. In underground mining, first and foremost in the modernization process are the machines that extract coal: primarily the continuous and longwall miners. First introduced in the late 1940’s, continuous miners provided a quantum leap in the speed and ...
Sandvik offers a wide range of extremely productive and reliable continuous miner cutting tools for bord and pillar mining. Cutting tools for roadheaders and miners. Sandvik has a wide selection of highly productive conical mining tools for roadway development with the toughtest carbide grades in
2009-8-26 THE IMPLEMENTATION OF MECHANIZED BREAST MINING 269 Application of XLP equipment Underground trials have two main components; firstly is ... constraints of face drilling equipment and minimum pillar spacing. The face drilling constraint is a function of shift time and equipment drilling rate. The maximum
2013-1-15 underground bord and pillar coal mining by C. Norden* and J. Ismail* Synopsis The purpose of this article is to show how a representative overall equipment effectiveness (OEE) measurement can be calculated for an underground coal mining bord and pillar batch process. The calculation method, the typical losses (which include planned and
You are here: Home Products Mechanical cutting equipment Continuous miners. ... They are typically used for full-scale production in room-and-pillar mining operations. The flameproof design of these machines is certified according to national regulations, such as MSHA (USA), SANS (South Africa) and DGMS (India). MC470 Continuous miner.
2013-2-21 COAL MINING IN INDIA : AN OVERVIEW 2nd INDO-US COAL WORKING GROUP MEETING WASHINGTON ... Bord Pillar with SDL, LHD; Powered support Longwall, Continuous miner. SAFETY STATISTICS in COAL MINING SECTOR (CIL) ... ¾Manufacturer of spare parts for mining equipment in India
MINING METHODS T scienceandtech.cmpdi. bord and pillar coal mining ppt of mining methods. While opencast operations are now fully mechanized employing large capacity earth moving equipment, introduction of machinery in underground workings has been gradual.
Cutting and bolting tools. Direct drive drilling systems; Cutting and bolting rods; ... Sandvik offers a wide range of extremely productive and reliable continuous miner cutting tools for bord and pillar mining. ... They are designed to cut and deliver material to auxiliary haulage equipment in a continuous operation.
2004-9-10 of mining methods. While opencast operations are now fully mechanized employing large capacity earth moving equipment, introduction of machinery in underground workings has been gradual. In conventional bord and pillar workings coal loading and transport have been mechanized, eliminating human labour and drudgery to a large extent. There have ...
2017-5-29 Coal pillar design procedures G. York, I. Canbulat, B.W. Jack Research agency: CSIR Mining Technology Project number: COL 337 Date: March 2000. 2 Executive Summary Examination of collapsed pillar cases outside of the empirical limits of Salamon and Munro’s in ... 3 Life and design of bord and pillar workings affected by