bord and pillar coal mining ppt

Bord And Pillar Coal Mining

bord and pillar coal mining ppt ppt for continuous mining in bord and pillar - Gold Ore Crusher 20121119- Coal Mining Technologies Presentation bell-pits or other Get Price And Support Online EVALUATION OF UNDERGROUND COAL PILLAR EVALUATION OF UNDERGROUND COAL PILLAR DESIGN The most important aspect of Bord and Pillar mining is the ....

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Room and Pillar Mining Method

Oct 22, 2014 0183 32 Room and Pillar Mining Method 1 Hassan Z Harraz hharraz2006 yahoo 2014- 2015 This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power point format so as to allow customization for the ,...

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MINING METHODS authorSTREAM

There are two main methods of extracting coal by underground mining room-and-pillar or, bord -and-pillar and longwall mining Room-and-pillar minin g involves cutting a network of rooms or panels into the coal seam and leaving behind pillars of coal to support the roof of the mine...

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Research Report on the Coal Pillar Recovery under Deep ,

RESEARCH REPORT ON THE COAL PILLAR RECOVERY UNDER DEEP COVER Office of Mine Safety and Health Research , University WVU , a study of the recovery of coal pillars through retreat room-and-pillar mining practices in underground coal mines at depths greater than 1,500 ft The study...

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Room and Pillar Mining Method

Oct 22, 2014 0183 32 Room and Pillar Mining Method 1 Hassan Z Harraz hharraz2006 yahoo 2014- 2015 This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power point format so as to allow customization for the individual needs of course instructors...

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Bord and Pillar Coal Cutting Machine Mining

Jan 22, 2014 0183 32 Coal cutting machine is used in bord and pillar mining method of underground coal mining to make Undercut, Overcut or Middlecut to provide free face for the blasting operation Development by CCM The headings are Undercut, Overcut or Middle Cut by a coal cutting machine and shot holes are then drilled and charged with explosives and blasted...

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Gr5finalUnderground Mining Method Ppt Mining 635 views

Gr5finalUnderground Mining Method Ppt - Download as Powerpoint Presentation ppt / pptx , PDF File pdf , Text File txt or view presentation slides online Underground Mining Methods Group 5 Underground Mining Methods Coal Mining Metal Mining Bord and Pillar Unsupported Mining Supported Mining Caving mining Longwall Room and Pillar Cut and fill Longwall Blasting galllery Stope and Pillar ....

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Principles of Room Pillar Mining

Sep 10, 2012 0183 32 This video provides a basic description of the room pillar mining method for extracting coal underground It includes an explanation of the different products working together in a room pillar ....

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Room and pillar mining

Room and pillar mining was one of the earliest methods used, although with significantly more man-power The room and pillar system is used in mining coal, gypsum, iron, and uranium ores, particularly when found as manto or blanket deposits, stone and aggregates, talc, soda ash and potash...

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Continuous Miners For Cutting Coal Soft Materials ,

double-pass 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 full-scale production in room-and-pillar mining operations...

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Bord Pillar Method Mining Coal

Basic parameters of bord and pillar mining system 1 Gallery bord 2 Pillar 3 Junction Calculation of percentage of extraction during development If coal from the full seam thickness is extracted, the percentage of extraction during development is nearly 20 in deep mines and 35 in shallow min...

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Longwall Mining

Dilip Kumar, Deepak Kumar, in Management of Coking Coal Resources, 2016 62102 Underground Mining Greater use of longwall mining, replacing bord-and-pillar mining, will improve resource recoveryIn case of thick seams, sublevel caving, hydraulic mining, and multislice longwall methods deserve special attention...

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Power Point Presentation On Board And Pillar Mining

bord and pillar coal mining ppt - godzalhetulonenbe bord and pillar coal mining ppt BORD PILLAR LAYOUT 4 4/16/2013 BORD PILLAR LAYOUT Main Elements Of Bord And Pillar Workings Size of the Panel Size of the Barrier Size of Pillars 5 the width of the barrier wider is the barrier and also softer the coal Greater the depth of working Online ....

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Bord and Pillar mining by continuous Miner in HINDI

Jul 29, 2016 0183 32 Bord and pillar is an underground mining method for extracting coal from belowground of earth Various machinery combinations are used for extracting One of the combination is the continuous ....

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EVALUATION OF BORD AND PILLAR MINING SYSTEM IN MCL ,

EVALUATION OF BORD AND PILLAR MINING SYSTEM IN MCL COAL MINES A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF Bachelor of Technology In Mining Engineering By RAM CHANDRA NAYAK 10605015 SANGRAM KESHARI DALAI 10605027 Department of Mining Engineering National Institute of Technology Rourkela-769008 2010...

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bort and pillar mining

bord and pillar coal mining ppt - Cutting Head Room and pillar mining - Wikipedia The key to successful room and pillar mining is in the selection of the optimum pillar size In general practice, the size of both room and pillars are kept almost equal, while in Bord Pillar, pillar size is much larger than bord ,...

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NSW Mining Methods

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 coal ,...

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power point presentation on board and pillar mining

power point presentation on board and pillar mining PowerPoint Presentation Ensure the size of pictures is reduced to avoid designing a PowerPoint presentation which, income are linked to illegal mining,, on board ,...

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Coal Mining Methods

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 traditional method in the United Stat Both methods are well suited to extracting the relatively flat coalbeds or coal seams typical of...

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Definition of bord

Definition of bord-and-pillar method A system of mining in which the distinguishing feature is the winning of less than 50 coal on the first working It is more an extension of the development work than mining The second working is similar in principle to top slicing...

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Productivity Improvement in Underground Coal Mines

Of the total output of coal from underground mines, more than 90 of coal is obtained by the bord and pillar method, the predominant method of mining followed in India, and the rest is mined by the longwall mining method The Indian coal mining industry has witnessed a persistent decline in underground coal production over the years with more ....

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Room And Pillar Coal Mining Ppt

room and pillar coal mining ppt Underground Mining There are two main methods of extracting coal by underground mining room-and-pillar or, bord -and-pillar , The underground mine employs a modified room and pillar mining method , bord and pillar coal mining ppt » Learn More...

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Design of Bord and Pillar method in coal mines

Feb 27, 2016 0183 32 One of such methods is the Bord and Pillar method of mining Bord and Pillar method of mining is one of the oldest methods 3 INTRODUCTION In India, about 98 of underground output of coal is obtained by Bord and Pillar method and barely about 2 by longwall methods...

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