bord and pillar mining method

  • The Duncan Method of Partial Pillar Extraction at Tasman Mine

    Underground Mining Methods: Room and Pillar method ... Characteristics of R & P method in non-coal applications R & P classic Step mining Post-pillar mining Configuring the R & P method in coal ...

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  • Pillar Extraction using Continuous Miners | Introduction ...

    Jul 29, 2016· Bord and pillar is an underground mining method for extracting coal from belowground of earth. Various machinery combinations are used for …

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  • Mining Funda: Bord and Pillar method of Mining

    UG2 orebody with trackless equipment using a bord and pillar mining method. Frank shaft has been mining the UG2 orebody for nearly 5 years. The T-cut mining method was introduced to see if it could improve the grade of the run of mine (ROM) as well the extraction percentage.

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  • Pillar design in coal mines | Request PDF

    Mar 24, 2013· (a) board and pillar (b) pillar and stall (c) room and pillar (d) stoop and room. The name varied depending upon the part of the country the mining took place, however the method was basically the same.

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  • Bord and pillar applications on the platinum mine: T-cut ...

    Greater use of longwall mining, replacing bord-and-pillar mining, will improve resource recovery. In case of thick seams, sublevel caving, hydraulic mining, and multislice longwall methods deserve special attention.

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  • Bord & Pillar Method | Mining | Coal Mining - Scribd

    All the advantages of bord-and-pillar mining make this method sound like the ultimate cost effective and efficient mining method, but there are major restrictions to its application, e.g.: The thickness of the orebody in relation to the machine dimensions

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

    The paper points out that bord-and-pillar mining is the most important method of coal extraction in South African underground coal mines, and advocates that pillar design procedures should be ...

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  • Underground mining techniques - Universidade Federal do ...

    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 States. Both methods are well suited to extracting the

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  • COAL MINING TECHNOLOGY - e-library WCL

    Pillar 3. the percentage of extraction during development is nearly 20% in deep mines and 35% in shallow mines.Basic parameters of bord and pillar mining system 1. . Gallery (bord) 2. Junction Calculation of percentage of extraction during development …

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  • Coal mining - Wikipedia

    The most common mining system is room-and-pillar. 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 ...

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  • Mining Methods - Lithgow Environment Group

    RESEARCH REPORT ON THE COAL PILLAR RECOVERY UNDER DEEP COVER Office of Mine Safety and Health Research National Institute for Occupational Safety and Health

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  • bort and pillar mining - culturenature.eu

    EVALUATION OF BORD AND PILLAR MINING SYSTEM IN MCL COAL MINES ... Bord and Pillar method of mining. Bord and Pillar method of mining is one of the oldest methods. The key to the successful Bord and Pillar mining is selecting the optimum pillar size.

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  • Room and Pillar Mining Method - SlideShare

    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 point (limited by geology, ventilation, ...

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  • NSW Mining Methods - NSW Mining

    Room and Pillar Mining Method 1. Hassan Z. Harraz [email protected] 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 applications on the platinum mine: T-cut ...

    bord and pillar mining Room and pillar mines, Mining Techniques, Underground Mining,, Room and pillar is also known as bord and pillar is a mining … Principles of Room & Pillar Mining - YouTube Sep 10, 2012· This video provides a basic description of the room & pillar mining method for extracting coal underground.

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  • Room-and-pillar mining | coal mining | Britannica.com

    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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  • (PDF) Underground Mining Methods: Room and Pillar method

    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: 4: Total Posts: 71: This board has 1 moderator: On This Board; You cannot create threads.

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  • Board & Pillar? | Coal, Colliery and Mining Forum.

    9 Blasting Gallery Method Conventional bord and pillar mining in thick seams is associated with very low percentage of extraction [around 30% in a panel] even under favourable conditions. Extensive development of pillars carried out

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  • Research Report on the Coal Pillar Recovery under …

    The fundamental concept of bord and pillar methods of mining is that the coal seam is divided into a regular block like array by driving through it primary headings which are intersected at regular intervals by connecting cutthroughs.

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  • Pillar Extraction using Continuous Miners | Introduction ...

    Sep 10, 2012· 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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  • Design of Bord and Pillar method in coal mines - SlideShare

    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.

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  • Bord & Pillar

    bord and pillar mining method - wildpeppersf.com. Pillar and Roof Span Design Guidelines for Underground Stone Mines- bord and pillar mining method,Developing a Pillar Strength Equation for Stone Min, Figure 1 Approximate location of underground stone mines for which pillar and roof, Underground stone mines in the United States use the room-and-pillar method of mining …

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  • Room and pillar mining - Wikipedia

    There are three main mining methods that are used locally, which are best described as either partial-extraction or total-extraction techniques. Bord & Pillar A partial extraction technique which creates a honey-comb effect within the coal seam.

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  • longwall mining - an overview | ScienceDirect Topics

    Bord & Pillar Welcome to Bord & Pillar. Happy Browsing. Menu. ... Open Ended Lifting. Thick Seam Mining; Panel and Pillar Extraction. Old Ben System; The Traditional Wongawilli Method; Modern Pillar Extraction. Modified Split and Lift; Longwall Mining; The Modern Wongawilli Method ... Longwall Mining Website . Coal Mine Outbursts Website ...

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  • bord and pillar mining method - de-kastelein.be

    The current method of mining is bord and pillar using continuous miner-bolters and shuttle cars for first workings and secondary extraction using breaker line supports.

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  • Method Overview | Bord & Pillar

    2016 Coal Operators' Conference The University of Wollongong 10 –12 February 2016 151 GEOTECHNICAL ASPECTS OF PLACE CHANGE MINING AT ENSHAM Nick Gordon1 ABSTRACT: The Ensham bord and pillar mine in the central part of the Bowen Basin is developing panels in the 5-6 m thick Aries/Castor Seam, using the place change mining method…

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  • Coal Mining Methods - EMFI

    Room and pillar mining is one of the oldest mining methods. Early room and pillar mines were developed more or less at random, with pillar sizes determined empirically and headings driven in whichever direction was convenient.

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  • MINING METHODS T - scienceandtech.cmpdi.co.in

    Bord and pillar mining method comprises two phases i.e 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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  • Bord and Pillar mining by continuous Miner in HINDI - YouTube

    characteristics of the major mining methods. 1.3.2 Room-and-Pillar Mining Room-and-pillar mining is designed for flat-bedded deposits of limited thickness, such as copper shale, coal, salt and potash, limestone, and dolomite. This method is used to recover ... Underground Mining Methods …

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  • Bord and Pillar Methods. | Coal, Colliery and Mining …

    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.

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  • EVALUATION OF BORD AND PILLAR MINING SYSTEM IN ... - …

    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 …

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  • Bord-and-pillar mining in inclined orebodies - SAIMM

    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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  • Principles of Room & Pillar Mining - YouTube

    These offer a vision of what could become the standard coal mining method of the not too distant future: 'Intelligent' mining machines completely controlled by computers, with sensors that pinpoint the positions of all moveable parts, and onboard control systems that run the equipment and collect data on the coal seam.

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  • Geotechnical Aspects of Place Change Mining at …

    UG2 orebody with trackless equipment using a bord and pillar mining method. Frank shaft has been mining the UG2 orebody for nearly 5 years. The T-cut mining method was introduced to see if it could improve the grade of the run of mine (ROM) as well the extraction percentage.

    Get Price
  • Continuous Miner | Bord & Pillar

    •Bord & Pillar is the traditional mining method used in India. •It is employed where geo-mining 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.

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