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bord and pillar mining equipment

Room and pillar mining - Wikipedia

Room and pillar (variant of breast stoping), is a mining system in which the mined material is extracted across a horizontal plane, creating horizontal arrays of rooms and pillars. To do this, "rooms" of ore are dug out while "pillars" of untouched material are left to support the roof overburden. Calculating the size, shape, and position of pillars is a complicated procedure, and is an area of active research. The technique is usually used for relatively flat-lying deposits, such as those that follow a particular stratum.

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Bord-and-pillar mining explained Illawarra Mercury ...

01/06/2017  Bord-and-pillar extractionis the older of the methods, and The word“bord” is not a misspelling of“board”, but a mining term for an underground space or room created ...

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CONTINUOUS MINER – Mining Science and Technology

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 left standing to help support the roof. Roof bolts, typically four to six feet long steel bolts, are inserted into holes bored into the roof to bind the strata together support the roof.

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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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Hard-rock room and pillar - QueensMineDesignWiki

In most room and pillar mining operations, ore is usually handled with rubber tire equipment. Due to the nature of this mining method , material handling equipment must be mobile and cannot be fixed in place since stopes are continually developing in different directions. Scoops are used to muck the ore and move it short distances but trucks are typically used the majority of transportation ...

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Board Pillar - SlideShare

15/09/2015  Board Pillar 1. Step mining It is an adaptation for the case where the dip of the ore body is too big (15o to 30o) to use equipment on tires at the same time that its thickness is relatively small (2 - 5 m). A special orientation of transit and stops galleries creates areas with horizontal floor, allowing the use of equipment on tires. The ...

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Room and pillar mines, Mining Techniques, Underground ...

Room and pillar is also known as bord and pillar is a mining system in which the mined material is taken out across a horizontal plane while leaving "pillars" of unscathed material to support the overstrain leaving open regions or "rooms" underground. It is normally utilized for fairly flat-lying deposits, like those that follow a meticulous stratum. The room and pillar system is used in ...

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Bord-and-pillar mining in inclined orebodies

Bord-and-pillar mining was then compared to conven-tional mining according to the following: financial analysis, dilution and flexibility. Conclusions could now be drawn to the appropriateness of bord-and-pillar mining in Vlakpoort and Moddergat. Results Geology of Vlakpoort and Moddergat The UG2 Chromitite Layer sub-outcrop strikes approximately north-west–south-east and occurs over a short ...

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

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 collapse in a controlled way as miners retreated to the exit. Share this item Post to Pinterest Post to Facebook Post to Twitter. Using this item ...

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Bord and Pillar mining - Sandvik Mining - equipment,

Our cutting tools for bord and pillar mining fit either continuous miners or roadheader machines.#160; They feature a hardened steel body/shank fitted with a wear and impact resistant tungsten carbide tip.#160; Depending on the application, we also...

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Hard-rock room and pillar - QueensMineDesignWiki

In most room and pillar mining operations, ore is usually handled with rubber tire equipment. Due to the nature of this mining method , material handling equipment must be mobile and cannot be fixed in place since stopes are continually developing in different directions. Scoops are used to muck the ore and move it short distances but trucks are typically used the majority of transportation ...

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Bord And Pillar Mining - greenrevolution

Room and Pillar ® Room Pillar Mining Equipment. Bord and Pillar Method, Mine Ventilation, by OcS (octavesim). This video is a chapter in the e-learning course offered by Octave Simulation Services Pvt. Read more. Coal - Mineral Fact Sheets - Australian Mines Atlas. In bord and pillar mining, coal is extracted in a series of parallel tunnels (bords) cut at right angles by another ...

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Board Pillar - SlideShare

15/09/2015  Board Pillar 1. Step mining It is an adaptation for the case where the dip of the ore body is too big (15o to 30o) to use equipment on tires at the same time that its thickness is relatively small (2 - 5 m). A special orientation of transit and stops galleries creates areas with horizontal floor, allowing the use of equipment on tires. The ...

More

Room and pillar mines, Mining Techniques, Underground ...

Room and pillar is also known as bord and pillar is a mining system in which the mined material is taken out across a horizontal plane while leaving "pillars" of unscathed material to support the overstrain leaving open regions or "rooms" underground. It is normally utilized for fairly flat-lying deposits, like those that follow a meticulous stratum. The room and pillar system is used in ...

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EVALUATION OF BORD AND PILLAR MINING SYSTEM IN MCL

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 the pillars are too small it becomes venerable to human safety. The issues relating to the stability of pillars and effective extraction from it is a major concern now-a-days. Uniaxial compressive ...

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Design of Bord and Pillar method in coal mines

27/02/2016  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. The other countries where Bord and Pillar method predominates are Australia, The USA and South Africa. The

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Room-and-pillar mining coal mining Britannica

Other articles where Room-and-pillar mining is discussed: mining: Room-and-pillar mining: 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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Cat will no longer build tracked drills, bord and pillar ...

Caterpillar has announced it will discontinue manufacture of its room and pillar equipment, and track drills. According to the company, it is part of a move to pursue ‘strategic alternatives ...

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Anderson, Boyes and Co - Graces Guide

of Flemington Electrical Works, Motherwell, Lanarkshire (1910), mining equipment makers of Rotherham and Cardiff 1900 Company founded. Anderson Boyes began business with the manufacture of coal cutting machines. These were followed by flame-proof control gear, shake conveyors, gate end loaders and a wide range of coal cutting machines, both for longwall and bord and pillar mining.

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Room and Pillar Mining - an overview ScienceDirect Topics

Continuous miners, used primarily in ‘room and pillar’ mining and also to prepare roadways in a ‘longwall’ systems, have incrementally improved over the last 20 years (Fig. 7.11).But they are not advancing in automation as quickly as longwall equipment, with the exception that they are more often remotely controlled by an operator, rather than by an operator sitting on the machine.

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Design of Bord and Pillar method in coal mines

27/02/2016  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. The other countries where Bord and Pillar method predominates are Australia, The USA and South Africa. The

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- University of Leoben research gateway

Application of softrock mining equipment for hard rock mining in a Bord and Pillar operation at KGHM. / Leitner, Alois. 2012. Research output: Thesis › Master's Thesis (University Course) Harvard. Leitner, A 2012, ' Application of softrock mining equipment for hard rock mining in a Bord and Pillar operation at KGHM '. APA. Leitner, A. (2012). Application of softrock mining equipment for hard ...

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- University of Leoben research gateway

Representatives of KGHM visited coal mines in South Africa in order to get an understanding of the room and pillar mining method used and how that mining method would be adapted to mine copper. The machine that would be used to mine copper at KGHM Rudna mine is called the bolter miner MB610 type. This bolter miner machine is able to cut the ore, load it onto a truck or shuttle car and support ...

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Mining simulation for room and pillar coal

A mining panel comprises 8 to 12 roadways 6 m wide and 17 to 24 m apart, depending on the pillar size. The equipment used in mining a panel includes three roof bolters, one coal cutter, one face drill, two loaders, and three shuttle cars. There are two daily production shifts of 7.5 hours involving the operation of all equipment and a third ...

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Cat will no longer build tracked drills, bord and pillar ...

Caterpillar has announced it will discontinue manufacture of its room and pillar equipment, and track drills. According to the company, it is part of a move to pursue ‘strategic alternatives ...

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VENTILATION PLANNING LAYOUTS FOR LARGE OPENING MINES

Large room-and-pillar stone mining fundamentals The value per ton of ore for large room-and-pillar stone mines is typically low, therefore productivity must be high. Typical face areas are 12.2 m wide x 7.6 m high (40 ft wide by 25 ft high) with 4.3 m (14 ft) pulled with each blast (Figure 1). This equates to over 1,000 tons of stone per

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Board Pillar? Coal, Colliery and Mining Forum.

12/01/2014  You should have joined in on the debate,as it was not mentioned about a certain depth for Bord and Pillar,but 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, As was mentioned by most,that it depended on the local geology and method of work,as was highlighted by the link to Maerdy Colliery ...

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Major Mines Projects - Mining Intelligence and News

FZOS is characterised by mechanised bord- and-pillar mining using a suite of continuous mining (CM) equipment. The operation is currently exploiting the seam 4 lower (S4L) with five CM sections and is supported by a fleet of primary and secondary mining equipment. FZOS is in its fourteenth year of operation. FZON also uses mechanised bord-and-pillar mining using a suite of CM equipment to ...

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Anderson, Boyes and Co - Graces Guide

of Flemington Electrical Works, Motherwell, Lanarkshire (1910), mining equipment makers of Rotherham and Cardiff 1900 Company founded. Anderson Boyes began business with the manufacture of coal cutting machines. These were followed by flame-proof control gear, shake conveyors, gate end loaders and a wide range of coal cutting machines, both for longwall and bord and pillar mining.

More