The focus is on technological upgradation of underground mines. In 201415, the technologywise production from the underground mines (in million tonnes) was: conventional bord and pillar – , mechanised bord and pillar – , mechanised longwall (including road header) – , continuous miner – , Total –
Get PriceTopic Mechanised Bord And Pillar Mining Methods Mining Weekly. By: Lisete Bigala A bordandpillar operation located in the North West. ... Mines using mechanised bordandpillar mines in province were instructed on. ... a variety of subscriptions to our Magazine, Website, PDF Reports and our photo library. Read more
Get PriceJul 16, 2010· It states all mechanised bordandpillar mines in the North West region are to revise their mine Codes of Practice, and reduce all bord widths in their shafts from 10 metres to 6 metres. This will apply to AQP SA’s Kroondal and Marikana operations.
Get PriceJul 16, 2010· There were no prescriptive measures on what bord and pillar sizes should be.’ In a research note released on Thursday, JP Morgan Cazenove analyst Steve Shepherd said: “In our view, there is a risk that the DMR is about to intervene in the area of systematic support designs for mechanised platinum mining.
Get PriceThis is to certify that the thesis entitled “EVALUATION OF BORD AND PILLAR MINING SYSTEM IN MCL COAL MINES” submitted by Sri Ram chandra Nayak, Roll No. 10605015 Sri Sangram keshari Dalai, Roll No. 10605027 in partial fulfillment of the requirements for the
Get Priceeconomical reef horizon. Mechanised (trackless) bord and pillar mining occurs in selected Merensky Reef areas on two of the shafts (12 and 14 Shafts). The average stoping width of mechanised panels is about Mine design and scheduling of operational shafts is undertaken utilising CadsMine™ software, while the mine design and
Get Priceout of 54 million tonne of underground production (200001), 20 million tonne came from mechanised bord pillar method, involving sdl lhd loading machines with roof bolting 3. oms for underground is ~, whereas for ocp overall average oms is more than 6 (200304) 4. around 850 loading m/c (9798) were in roll in 143 nos.
Get PriceUnderground narrow seam conventional bord and pillar Planned infrastructure Satellite underground adit, ROM proposed to be hauled to Vaalkrantz through existing Vaalkrantz CHPP
Get Pricepillars for use with a mechanised mining operation at depths of between 850 and 1 200 metres below surface. INTRODUCTION Although the use of mechanised bordandpillar type mining with pillar support is common in the shallow (<500m below surface) bushveld chrome mines, the platinum mines have traditionally
Get PriceThe UG2 sections of Booysendal North and South mines are underground, mechanised bord and pillar mines, accessed from surface via ramp decline systems. The North mine decline system comprises three declines on the plane of reef and one decline situated 20m into …
Get PriceThe proposed change in the primary mining method will result in a move away from the current highervolume, mechanised bordandpillar mining method to a process involving mechanised …
Get PriceMar 24, 2013· All the mines I've worked in using Bord and Pillar were mechanised, BG's Marblaegis Mine used drill rigs, faces were drilled fired and mucked out using Wagner Scoop Trams, (LHD's). They now use Joy continuous miners. Boulby used the drill fire the headings and load out with Eimco's (LHD's) Now use Joy miners.
Get PriceKoornfontein Coal Mine Blinkpan Underground This is the Blinkpan underground operation which is a mechanised bordandpillar operation, with coal crushed, screened, washed and transported by rail...
Get PriceRoom and pillar mining : Room and pillar mining is commonly done in flat or gently dipping bedded ore bodies. Pillars are left in place in a regular pattern while the rooms are mined out. In many room and pillar mines, the pillars are taken out starting at the farthest point from the stope access, allowing the roof to collapse and fill in the ...
Get PriceSep 27, 2018· If the engineer only uses the mining cost as the selection criterion, this orebody will be mined using a mechanised bordandpillar mining method. Let us now consider dilution and the effect on the cost per reef tonne produced to test the initial selection. The dilution for both mining methods is illustrated below.
Get PriceNonetheless, he highlighted that South Africa did have mechanised mines, but that they mostly used the bordandpillar mining method with lowprofile mining technologies, which were mostly ...
Get PriceFZON also uses mechanised bordandpillar mining using a suite of CM equipment to exploit primarily the S4L, although S2L was also previously exploited. After operating for 20 years, FZON was placed under care and maintenance in February 2014. It was recommissioned in October 2018 with one CM section targeting the S4L and plans to introduce ...
Get Pricedoublepass miners use the most advanced cutting technology for the continuous mining of coal and soft materials. Continuous miners cut and gather the material simultaneously and convey it into shuttle cars, haul trucks or a continuous haulage system. They are typically used for fullscale production in roomandpillar mining operations.
Get PriceComputer simulation of mechanised bord and pillar coal production systems . By UNSW Faculty of Engineering Mining Engineering Paul Francis Hensley. Download PDF (21 ) Abstract. With the increased use of computers over the last twenty years simulation of many systems encountered in mining operations has become possible. ...
Get Price•Bord Pillar is the traditional mining method used in India. •It is employed where geomining conditions are complex. •Coal is removed from the coal faces initially by developing a set of galleries leaving pillars in between to support the roof.
Get PriceBord and pillar mining Next. This diagram shows the traditional method of bord and pillar mining. Miners first extracted coal along roadways or bords, while the coal in between the bords acted as pillars holding up the roof. Then the outer pillars were mined, leaving the roof to collapse in a controlled way as miners retreated to the exit.
Get PriceBord Pillar Method Of Working CLICK HERE TO DOWNLOAD NOTES FOR BORD PILLAR METHOD OF WORKING Notes Cover following topics Bord and Pillar method: Schemes of development; design of bord and pillar working; statutory provisions; selection of equipment for development mechanised loaders, continuous miners arrangement for depillaring; …
Get PriceFig. 3Potential areas of application of bordandpillar mining It should be noted that both bounds are controlled largely by economic factors. For the most severe constraints, namely acoaltowaste ratio of1:10 and an upper limit for lost coal of30per cent, the field of application ofconventional bordandpillar …
Get PriceMechanised mining, using Continuous Miner (CM) bord and pillar sections, has been successfully introduced into Indian coal mines for more than a decade. This milestone was possible only with the concurrent introduction of advanced technology with rock bolting to provide reliable safe support.
Get PriceBordandpillar mining has some favourable promises such as improving labour difficulties, lowering operating costs and providing safer working conditions. The success of mechanized bordandpillar mining in narrow tabular steep dipping orebodies will depend on the extent of the research and development efforts
Get PriceOur field: Mechanised U/G Bord and Pillar sections Background on benchmarking by MCS Our field: Mechanised U/G Bord and Pillar sections MCS has been in existence since 1988 Benchmarking started in 2006 with 35 sectionsBenchmarking started in 2006 with 35 sections participating Currently certain data is available for approximately 108
Get PriceReef production is through a fully mechanised bord and pillar stoping method is employed where stoping widths average around metres. A mining section consists of eight 812m bords, with pillar sizes increasing with depth below surface. In the shallow areas …
Get PriceRustenburg is a shallow to intermediate level PGM mining, surface sources and concentrators located on the Western Limb of the Bushveld Complex, northeast of the town of Rustenburg in the North West Province of South Africa, some 120 km northwest of Johannesburg. As at 31 December 2018, Rustenburg had (including tailings) million oz of …
Get Price200501 Change over from Board and pillar TCut to Dip pillar 4 / 19 Mining method proposal 2000/2001 Bord and Pillar Introduction During the later part of 2000 the Global conditions changed to such a extent that mining the UG2 became very lucrative and a …
Get PriceUnderground Mining Methods: Room and Pillar method. ... (Bord)andPillar Layout. ... but the hard rock sector too is working hard to develop new mechanised, and continuous, systems. ...
Get Price