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Bord And Pillar Mining Method

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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  • 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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  • Definition of bordandpillar method   glossary

    Definition of bordandpillar method glossary

    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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  • Bordandpillar mining in inclined orebodies

    Bordandpillar mining in inclined orebodies

    proven mining method in these conditions and has a lower risk operational failure Bordandpillar 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

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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

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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 · 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

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  • PDF Underground Mining Methods Room and Pillar method

    PDF Underground Mining Methods Room and Pillar method

     Room and pillar mining method has a low recovery rate a large percentage of ore remains in place underground  In many room and pillar mines the pillars are taken out sta rting at the

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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 coal to support the mine

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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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  • 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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  • 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

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  • Definition of bordandpillar method   glossary

    Definition of bordandpillar method glossary

    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 equipment

    bord and pillar mining equipment

    bort and pillar mining bord and pillar mining method raftingandcamping 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

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  • Bord and pillar applications on the platinum mine Tcut

    Bord and pillar applications on the platinum mine Tcut

    The Tcut mining method is basically a partial pillar extraction method The pillar 13 m x 13 m created by the bord and pillar development is being stoped only the UG2 reef out for 2 m from the roadways on all sides to leave an effective pillar of 9 m x 9 m This method creates the required higher extraction percentage and higher Run of

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  • Bord and Pillar Methods  Coal Colliery and Mining Forum

    Bord and Pillar Methods Coal Colliery and Mining Forum

    Mining Methods and Geology Bord and Pillar Methods Mining Methods and Geology Bord and Pillar Methods General chat about bord and pillar Threads and Posts Total Threads 5 Total Posts 79 This board has 1 moderator On This Board You cannot create threads

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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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  • 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 coal to support the mine This method has been in

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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

    The “continuous” version of roomand pillar mining is the most common representing more than half of all underground production In this method a continuous mining machine excavates the coal and loads it onto a conveyor or shuttle car in a single step Despite the

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  • Major Mines  Projects  Wessels Mine

    Major Mines Projects Wessels Mine

    Mining Methods Bordandpillar Summary Wessels is an underground bord and pillar operation with a current capacity of approximately 12 Mtpa of ROM production 100 per cent basis Processing Technologies Summary Primary crushing of ore takes place underground while secondary crushing forms part of the surface operations ROM ore is

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  • Pillar Extraction using Continuous Miners  Introduction

    Pillar Extraction using Continuous Miners Introduction

    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

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  • Toward Pillar Design to Prevent Collapse of Roomand

    Toward Pillar Design to Prevent Collapse of Roomand

    TOWARD PILLAR DESIGN TO PREVENT COLLAPSE OF ROOMANDPILLAR MINES R Karl Zipf Jr Chief Catastrophic Failure Detection and Prevention Branch Traditional strengthbased pillar design methods applicable to coal or hardrock mines use a Roomandpillar mining

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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

    bord and pillar

    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 coal to support

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  • THE MODERN WONGAWILLI METHOD – Mining Science

    THE MODERN WONGAWILLI METHOD – Mining Science

    Home Bord Pillar Method Modern Pillar Extraction The size of the stooks and fenders can be changed as dictated by prevailing conditions and experience of the mining officials output is attributed to the deployment of continuous bridge conveying or chain haulage system with place change method of heading development and pillar

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  • Panel  Pillar Extraction – Mining Science and Technology

    Panel Pillar Extraction – Mining Science and Technology

    Home Bord Pillar Method Archive by category Panel Pillar Extraction THE TRADITIONAL WONGAWILLI METHOD Invitation to International Workshop of Coal Mining at the Great Depth Peter McInally Book on Ventilation Contact us Links Useful Links Contribute to the Website

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  • Board  Pillar  Coal Colliery and Mining Forum

    Board Pillar Coal Colliery and Mining Forum

    Jan 12 2014 · Board Pillar Mining Methods and Geology 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 most UK pits worked the Bord and

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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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  • MINING METHODS T

    MINING METHODS T

    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 mostly

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  • PREVIOUS AND CURRENT MINING METHODS

    PREVIOUS AND CURRENT MINING METHODS

    Mining method and equipment 421 General The bord and pillar mining layout will be maintained because of its reliability flexibility low capital cost low working costs and large skills source availability Woodruff 1966 Increasing mechanization has resulted in

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