Bord And Pillar Coal Mining

Bord And Pillar Coal Mining

Bord And Pillar Coal Mining

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

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  • Bord and pillar mining – Coal and coal mining – Te Ara

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    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

  • Bord Pillar Pet Resort

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    Bord Pillar Pet Resort provides overnight and extended stay boarding in our luxurious suites Our goal is to make your fur babies as comfortable as we can while they are staying with us

  • Roomandpillar mining coal mining

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    Other articles where Roomandpillar mining is discussed mining Roomandpillar mining The most common mining system is roomandpillar In this system a series of parallel drifts are driven with connections made between these drifts at regular intervals When the distance between connecting drifts is the same as that between the parallel drifts then a

  • bord and pillar mining equipment

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    Bord and pillar mining – Coal and coal mining – Te Ara 2006612ensp·enspBord 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

  • Bordandpillar mining explained Illawarra Mercury

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    May 31 2017 · Two main methods of extraction are used for underground coal mines in New South Wales longwall and bordandpillar extraction Bordandpillar extraction is

  • Design of Bord and Pillar method in coal mines SlideShare

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    Feb 27 2016 · BASIC PRINCIPLE OF BORD AND PILLAR METHOD The development of mine by the method of working known as Bord and Pillar consists of driving a series of narrow roads separated by blocks of solid coal parallel to one another and connecting them by another set of narrow parallel roadways driven nearly at right angles to the first set

  • Bordandpillar ops approved for Dartbrook extension

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    Last year as an alternative AQC Dartbrook Management a wholly owned subsidiary of AQC lodged a modification application to allow bordandpillar mining within the mines Kayuga seam as well as an alternative coal clearance system for transporting ROM coal from the mine

  • Pillar design incoalmines SAIMM

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    productivity pillar mining tional bordandpillar mining methods Thealternatives are opencast methods where the coal seams are relatively shallow andthick andpanel andlongwall mining methods fordeeper coalseams Thearea ofapplication ofopencast methods islargely determined bythe size ofthe coal deposit and the coaltowaste ratio For

  • Coal Mining Methods

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    Coal Mining Methods Underground Mining Longwall Room and Pillar Mining Longwall mining and roomandpillar mining are the two basic methods of mining coal underground with roomandpillar being the traditional method in the United States Both methods are well suited to extracting the relatively flat coalbeds or coal seams typical of

  • NSW Mining Methods NSW Mining

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    Bordandpillar Bordandpillar or roomandpillar 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 to support the mine

  • Bord Pillar – Mining Science and Technology

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    As bord and pillar workings are developed roof support becomes a major consideration and operating cost item Support requirements vary considerably and are dependent on the physical conditions in the seam which are often depth dependent and the length of

  • EVALUATION OF BORD AND PILLAR MINING SYSTEM

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    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

  • Bord and Pillar Methods Coal Colliery and Mining Forum

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    Books and Papers Reviewed or For Sale Items For Sale The Message Board The Bathrooms

  • Bord And Pillar Mining In Inclined Orebodies Saimm

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    underground mining bord and pillar Feb 27 2016· 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

  • Bord Pillar – Mining Science and Technology

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    As bord and pillar workings are developed roof support becomes a major consideration and operating cost item Support requirements vary considerably and are dependent on the physical conditions in the seam which are often depth dependent and the length of

  • PDF Pillar design in coal mines

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    PDF The paper points out that bordandpillar mining is the most important method of coal extraction in South African underground coal mines and advocates that pillar design procedures should

  • Coal Mining Methods

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    Coal Mining Methods Underground Mining Longwall Room and Pillar Mining Longwall mining and roomandpillar mining are the two basic methods of mining coal underground with roomandpillar being the traditional method in the United States Both methods are well suited to extracting the relatively flat coalbeds or coal seams typical of

  • Pillar design incoalmines SAIMM

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    productivity pillar mining tional bordandpillar mining methods Thealternatives are opencast methods where the coal seams are relatively shallow andthick andpanel andlongwall mining methods fordeeper coalseams Thearea ofapplication ofopencast methods islargely determined bythe size ofthe coal deposit and the coaltowaste ratio For

  • Board Pillar Coal Colliery and Mining Forum

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    Jan 12 2014 · You should have joined in on the debateas it was not mentioned about a certain depth for Bord and Pillarbut a mention by a Mining Engineer that at greater depth there was need for larger pillars with his link to the Coalbrook disaster in South Africa in 1960

  • PDF Underground Mining Methods Room and Pillar

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    Underground Mining Methods Room and Pillar method BordandPillar Layout the concept of methane resource exploitation from coal mine refers to the potential for exploitation of the

  • Pillar Extraction using Continuous Miners underground COAL

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    PILLAR EXTRACTION USING CONTINUOUS MINERS Overview Now that longwall equipment has been developed to a stage where it is able to cope with most conditions satisfactorily longwall mining is the most widely used method of secondary extraction However there are still mines and occasions where longwall mining is not suitable eg

  • Coal mining Wikipedia

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    Most coal seams are too deep underground for opencast mining and require underground mining a method that currently accounts for about 60 percent of world coal production In deep mining the room and pillar or bord and pillar method progresses along the seam while pillars and timber are left standing to support the mine roof Once room and pillar mines have been developed to a stopping

  • Pillar Extraction SpringerLink

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    Abstract Pillar extraction also referred to as retreat mining pillar recovery stooping pillar robbing and bord and pillar second workings is the practice of forming a series of pillars and then partially or totally extracting some or all of the pillars usually with mining operations retreating out of a panel There are a number of basic pillar extraction methods with numerous

  • CONTINUOUS MINER – Mining Science and Technology

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    These make possible even fuller recovery of the available coal while removing the machine operator further from the working area Continuous miners operate a room and pillar mining system A series of 18 to 20 foot wide rooms are driven in the coalbed with pillars or columns of coal

  • Mothballed Dartbrook coal mine in NSW can restart

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    Aug 09 2019 · The company a whollyowned subsidiary of Australian Pacific Coal lodged a modification application to allow bord and pillar mining within the Kayuga Seam an alternative coal

  • Definition of bordandpillar method glossary

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    Definition of bordandpillar 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

  • For personal use only

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    international Bord and Pillar underground coal mining operations benchmarked by Palaris o Bord Pillar mining expected to be possible at Lochinvar to depths less than 400 m from the surface where geotechnical conditions are typically more benign than at greater depths

  • Productivity Improvement in Underground Coal Mines A

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    The mine produces washed prime coking coal The colliery is currently being operated in Seam 9 and Seam 11 employing the bord and pillar method It should be mentioned here that the bord and pillar mining method comprises two phases ie development and depillaring

  • capital cost for a bord and pillar coal mining project in

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    Bord Pillar Method Mining Coal Scribd Applicability of bord and pillar mining method Following points should be considered for bp mining Gradient of the seam Flat seams are more suitable Thickness of the seam Seam thicker than 15 m and preferably 183 m thick are suitable for bp mining

  • Optimising underground coal mining

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    Oct 28 2009 · Phillip Venter who is managing director of Magatar Mining says that while bordandpillar and longwall mining methods have become industry standards in coal mining they are not optimal in respect of resource utilisation efficiency flexibility and safety Hence he


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