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Bord And Pillar Method

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

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

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

    Bord and pillar 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

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  • Mining Funda Bord and Pillar method of Mining

    Mining Funda Bord and Pillar method of Mining

    Bord and pillar mining method comprises two phases ie DEVELOPMENT and DEPILLARING Sometimes both these phases proceeds simultaneously In development pillars are formed by driving a network of galleries of which one set is generally parallel to the dip and the other set is parallel to the strike cutting the former at right angles

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  • Bordandpillar mining explained  Illawarra Mercury

    Bordandpillar mining explained Illawarra Mercury

    May 31 2017 · Bordandpillar mining is used in first workings of a deposit and when irregularly shaped deposits or sensitive environmental conditions call for a lighter touch This method is used at Wongawilli after the longwall miner was buried in a roof collapse Longwall mining is newer and revolutionised coal mining

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  • EVALUATION OF BORD AND PILLAR MINING SYSTEM IN

    EVALUATION OF BORD AND PILLAR MINING SYSTEM IN

    One of the oldest methods of mining is the Bord and Pillar It is a method in which the mined material is extracted across a horizontal plane while leaving pillars of untouched material to support the overburden leaving open areas or rooms underground

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  • Bord  Pillar – Mining Science and Technology

    Bord Pillar – Mining Science and Technology

    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

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  • Design of Bord and Pillar method in coal mines

    Design of Bord and Pillar method in coal mines

    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

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  • Bordandpillar mining in inclined orebodies

    Bordandpillar mining in inclined orebodies

    All the advantages of bordandpillar mining make this method sound like the ultimate cost effective and efficient mining method but there are major restrictions to its application eg The thickness of the orebody in relation to the machine dimensions The maximum dip angle the machines can handle efficiently and effectively

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  • PDF Underground Mining Methods Room and Pillar method

    PDF Underground Mining Methods Room and Pillar method

    Room and Pillar R P means a method in which a set of rooms is developed leaving pillars rock usually of uniform size to support the roof The pillars ma y or may not be removed after the

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  • Mining Funda Bord and Pillar method of Mining

    Mining Funda Bord and Pillar method of Mining

    Bord and pillar mining method comprises two phases ie DEVELOPMENT and DEPILLARING Sometimes both these phases proceeds simultaneously In development pillars are formed by driving a network of galleries of which one set is generally parallel to the dip and the other set is parallel to the strike cutting the former at right angles

    Click to view
  • EVALUATION OF BORD AND PILLAR MINING SYSTEM

    EVALUATION OF BORD AND PILLAR MINING SYSTEM

    One of the oldest methods of mining is the Bord and Pillar It is a method in which the mined material is extracted across a horizontal plane while leaving pillars of untouched material to support the overburden leaving open areas or rooms underground

    Click to view
  • PDF Underground Mining Methods Room and Pillar method

    PDF Underground Mining Methods Room and Pillar method

    Room and Pillar R P means a method in which a set of rooms is developed leaving pillars rock usually of uniform size to support the roof The pillars ma y or may not be removed after the

    Click to view
  • bord and pillar mining equipment

    bord and pillar mining equipment

    Bord and Pillar Method of Working Coal Mining Mining Combining the features of both Bord and Pillar methods and Longwall methods there is another method of mining coal seams which is known as the Shortwall Method of mining

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  • NSW Mining Methods  NSW Mining

    NSW Mining Methods NSW Mining

    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

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  • Bord  Pillar – Mining Science and Technology

    Bord Pillar – Mining Science and Technology

    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

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  • Bord and pillar applications on the platinum mine Tcut

    Bord and pillar applications on the platinum mine Tcut

    Bord and pillar applications on the platinum mine Tcut mining method operations This operation is carried out with a mixing and pumping plant mounted on a Bord Longyear multi purpose vehicle MPV The explosives are gassed emulsions The initiation is done by an EZDrifter detonator and a 15 mg Stinger Booster 15 mg PETN The millisecond delay

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  • Roomandpillar mining  coal mining  Britannica

    Roomandpillar mining coal mining Britannica

    A common openstoping method is roomandpillar mining in which pillars of ore are left standing to support the rock over a flatlying ore body Read More Load Next Article

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  • Pillar Extraction  SpringerLink

    Pillar Extraction SpringerLink

    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

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  • Room and Pillar Mining Method  SlideShare

    Room and Pillar Mining Method SlideShare

    Oct 22 2014 · Characteristic of R P It is the most common supported pillar method designed and used primarily for mining flatlying seams or tabular orebodies or gently dipping bedded ore deposits of limited thickness like coal oil shale limestone phosphate salt trona potash and bedded uranium ores Room and pillar methods are well adapted to mechanization and are preferred to apply for

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  • Coal Mining Methods

    Coal Mining Methods

    Longwall mining and roomandpillar mining are the two basic methods of mining coal underground with roomandpillar being the traditional method in the United States

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  • Bord and Pillar Methods  Coal Colliery and Mining Forum

    Bord and Pillar Methods Coal Colliery and Mining Forum

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

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  • Study Material  Mine Portal  Indias No1 Mining Exams

    Study Material Mine Portal Indias No1 Mining Exams

    Bord 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 atory arrangement for depillaring

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  • Bordandpillar  Definition of Bordandpillar by Merriam

    Bordandpillar Definition of Bordandpillar by Merriam

    Bordandpillar definition is of or relating to a system of coal mining in which tunnels are driven in a checkerboard pattern having massive square pillars between them

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  • Bord and Pillar  coal pillars and method

    Bord and Pillar coal pillars and method

    BORD AND PILLAR The bord and pillar method of working coal is perhaps the first systematized method practised In this method narrow roads are driven in the coal seam so as to form pillars which are subsequently removed

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  • Bordandpillar  Definition of Bordandpillar by Merriam

    Bordandpillar Definition of Bordandpillar by Merriam

    Bordandpillar definition is of or relating to a system of coal mining in which tunnels are driven in a checkerboard pattern having massive square pillars between them

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  • FIRST WORKINGS – Mining Science and Technology

    FIRST WORKINGS – Mining Science and Technology

    The size of the pillars and headings driven during the first working stage is restricted by statutory requirements of a particular State In NSW the size of the pillar is restricted to a minimum of 110 of the depth and the width of the bord to 55 m Special exemptions are required for driving bords roadways wider than 55 m

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  • THE MODERN WONGAWILLI METHOD – Mining Science and

    THE MODERN WONGAWILLI METHOD – Mining Science and

    Home Bord Pillar Method Modern Pillar Extraction THE MODERN WONGAWILLI METHOD THE MODERN WONGAWILLI METHOD The Wongawilli system involves much larger blocks of up to 200 m wide It consists of a 2 or 3 heading entry headings driven through the centre of the panels splitting the panel into two smaller panels

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  • BORD AND PILLAR   Under Ground Mining

    BORD AND PILLAR Under Ground Mining

    Roomandpillar mining is the most common unsupported method used primarily for flatlying seams or bedded deposits like coal trona limestone and salt Subscribe to view the full document BORD AND PILLAR METHOD

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  • PDF Success of Continuous Miner in Bord and Pillar Method

    PDF Success of Continuous Miner in Bord and Pillar Method

    Success of Continuous Miner in Bord and Pillar Method This paper deals with the use of continuous miner and its success in bord pillar method of underground coal mining

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  • Board  Pillar  Coal Colliery and Mining Forum

    Board Pillar Coal Colliery and Mining Forum

    Jan 12 2014 · Wongawilli worked standard BP when I was there and a method known as the Wongawilli method of pillar extraction Ill make a drawing of how it was worked when I have a few minutes and scan the drawing but basically we drove two headings with cross cuts at right angles one was a return one was a belt road to the end of the block of coal

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