bord and pillar mining conveyor methodology

Pillar Strength and Design Methodology for Stone Mines

Pillar Strength and Design Methodology for Stone Mines Gabriel S. Esterhuizen, Sr. Research Engineer Dennis R. Dolinar, Lead Research Engineer John L. Ellenberger, Lead Research Scientist NIOSH-Pittsburgh Research Laboratory Pittsburgh, PA ABSTRACT Underground stone mines in the United States make use of the room-and-pillar method of mining.

bord and pillar mining conveyor methodology

bord and pillar mining conveyor methodology. Jun 01 2017 · Bordandpillar extractionnbspis the older of the methods andnbsp The wordnbsp“bord” is not a misspelling ofnbsp“board” but a mining term for an underground space or room createdWe are a professional mining machinery manufacturer, the main equipment including: jaw crusher, cone crusher and other sandstone equipment;Ball mill

Bord-and-pillar mining in inclined orebodies

proven mining method in these conditions and has a lower risk operational failure. Bord-and-pillar mining has some favourable promises such as improving labour difficulties, lowering operating costs and providing safer working conditions. The success of mechanized bord-and-pillar mining in narrow tabular steep dipping orebodies

Bord-and-pillar mining explained Illawarra Mercury

Jun 01, 2017 Bord-and-pillar 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

Optimization of Continuous Miner Operations in Bord and

1. Bord and pillar method Depillaring 1. Split and Fender system 2. Nevid method of mining Continuous miner A continuous miner is a large steel drum equipped with a tungsten carbide teeth that scraps the coal from the face. It is used along with the quadbolter, shuttle car and LHD’s. The continuous miner accounts about 45% of underground

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

The T-cut 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

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

Bord and pillar working with LHD/SDL

Jun 10, 2015 Equipment selection for bord and pillar mining. Chain Conveyor MODEL Motor Power (KW) Capacity (tph) Peak Avg Width (mm) Speed( m/s) LDCC Skat-60 2 X 15 90 60 420 0.87 LDCC PF-00 2 X 30 90 60 426 0.87 MDCC PF-I-500 1 X 45 2 X 30 250 200 632-640 0.65 MDCC PF-Iv- 500 1 X 45 2 X 30 300 220 632-640 0.65 MDCC MIV 500 1 X 45 2 X 30 350 250 632

Bord and pillar mining method || underground mining method

Dec 17, 2019 Hi everyone, In this video we are discussing about the underground mining method,basically what is bord and pillar mining method,wha...

Room and Pillar Mining an overview ScienceDirect Topics

The major partial mining method are strip pillar mining, Wongawilli strip pillar mining, room and pillar mining, and thickness-limited extraction. 1. Strip pillar mining. Strip mining technology is an effective measure to reduce the overburden strata and surface movement and deformation, and it is also one of the important measures in the system of “Green Mining.”

Underground Mining Methods UFRGS

FIGURE 1.2 Classic room-and-pillar mining this chapter; the goal of this chapter is to summarize briefly the 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.

Hard-rock room and pillar mining best practice industry

HARD-ROCK ROOM AND PILLAR MINING BEST PRACTICE INDUSTRY WORKSHOP 231 Introduction although rock bolting method were addressed in some detail. sizes, panels per section, numbers of strike conveyors per section, pillar geometry, size and frequency of roof bolt installation, overall face shape, decline development rate

Bord And Pillar Mining India taniecblonie.pl

Bord And Pillar Mining Conveyor Methodology. 27022016 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

Room and Pillar Mining an overview ScienceDirect Topics

The major partial mining method are strip pillar mining, Wongawilli strip pillar mining, room and pillar mining, and thickness-limited extraction. 1. Strip pillar mining. Strip mining technology is an effective measure to reduce the overburden strata and surface movement and deformation, and it is also one of the important measures in the system of “Green Mining.”

Two Rivers Platinum Mine: the orebody, the mining

The mining method is a mechanized bord and pillar layout, which will yield a total of 185 000 conveyor decline system developed from surface as well a chairlift decline for man transport. The conveyor/ service mechanized room and pillar stoping method. A mining section consists of eight 12 m rooms, with pillar sizes

Board & Pillar? Coal, Colliery and Mining Forum.

Aug 16, 2013 Bord and pillar, (same as board I guess), Post and Stall, Stall Worked, and here is one up for grabs, for some reason I cannot shake off the thought that I recall this method being referred to as Pillar and Post locally at least, I know that it seems to be nonsensical by virtue of both terms being support methods, but we are a queer lot in this corner anyway (tail-gate corner that is, probably

Mining Methods: Longwall, Horizon and Level Mining Methods

Apart from the commonly practiced “bord and pillar” method of mining followed in this country, the other methods of mining adopted in some collieries are: 1. Longwall Mining Method 2. Horizon Mining 3. Level Mining or Semi-Horizon Mining. Room and pillar method of mining is not practiced in any of the collieries in India though it is the

Underground Mine Ventilation A Case Study

underground mine with a method of mining/technology (i.e. Bord and Pillar mining method). In which we have analyzed from the below-mentioned seams in mine they are, 1 seam average thickness of 2.5 mts to 3.30 mts. 2 seam average thickness of 2.5 mts to

LV 08 Design of Pillar Support System for TM3 at Depth I.

Although the use of mechanised bord-and-pillar type mining with pillar support is common in the shallow (<500m below surface) bushveld chrome mines, the platinum mines have traditionally employed narrow-width scraper mining as their stoping method, using pillars and elongates for support.

Styldrift Royal Bafokeng Platinum

A trackless bord and pillar mining method is employed in the thicker Merensky resource areas with mining heights varying between 2.0m and 2.2m. A conventional hybrid breast mining layout is currently envisaged for the extraction of the narrow Merensky reef area.

An evaluation of mining methods using continuous miners in

Con~inuo~s m.iners are e~ployed in a nu~ber of mining methods including bord-and-pillar, pillar extraction (~tOOplng), rib-pillar extraction, and shortwalling. These techniques of mining are evaluated with respect to produc-tion rates and the cost of extraction for ~o,uth Afri~an conditions',lncluded in these evaluations are the types of equip-

PRODUCTIVITY IMPROVEMENT IN UNDERGROUND COAL

than 90% of coal is obtained by the bord and pillar method, the predominant method of mining followed in India, and the rest is mined by the longwall mining method. The Indian coal mining industry has witnessed a persistent decline in under-ground coal production over the years with more emphasis on opencast mining.

PBE Mining Process PBE Technologies Pty Ltd

Flexible Plunge Conveyor System. Allows for the continuous evacuation of coal from the cutting face via linked conveyors directly to the surface of the mine. Permits the continuous miner to mine coal without having to stop for coal transport. Enables mining around the corner of the plunge cut entry. Proprietary technology developed by PBE.

Abel Coal Project Longwall Mining Modification (05 0136

coal, and introduce more-intensive mining methods in discrete areas of the Abel mine. It plans to extract five longwall panels from part of the Lower Donaldson Seam and to extract five shortwall panels in a separate part of the same seam. It also proposes to undertake bord and pillar mining and

Bord & Pillar Method Mining Coal

Bord AND PILLAR MINING METHOD comprises of two phases: development and depillaring. Pillars are formed by driving a series of narrow roads (headings) or galleries in the seam. Percentage of extraction during development is nearly 20% in deep mines and 35% in shallow mines.

Toward Pillar Design to Prevent Collapse of Room-and

Room-and-pillar mining accounts for a significant portion of the total mineral production in the United States As shown in table 1, well in excess of $6 billion worth of mineral commodities are produced each year by this method. A substantial portion ($3.55 billion) of coal production still comes from room-and-pillar mining. Metallic minerals

Hard-rock room and pillar mining best practice industry

HARD-ROCK ROOM AND PILLAR MINING BEST PRACTICE INDUSTRY WORKSHOP 231 Introduction although rock bolting method were addressed in some detail. sizes, panels per section, numbers of strike conveyors per section, pillar geometry, size and frequency of roof bolt installation, overall face shape, decline development rate

Board & Pillar? Coal, Colliery and Mining Forum.

Aug 16, 2013 Bord and pillar, (same as board I guess), Post and Stall, Stall Worked, and here is one up for grabs, for some reason I cannot shake off the thought that I recall this method being referred to as Pillar and Post locally at least, I know that it seems to be nonsensical by virtue of both terms being support methods, but we are a queer lot in this corner anyway (tail-gate corner that is, probably

EVALUATION OF UNDERGROUND COAL PILLAR DESIGN

One of such methods is the Bord and Pillar method of mining which 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 decreases leading to less profitability and if the pillars are too small it

LV 08 Design of Pillar Support System for TM3 at Depth I.

Although the use of mechanised bord-and-pillar type mining with pillar support is common in the shallow (<500m below surface) bushveld chrome mines, the platinum mines have traditionally employed narrow-width scraper mining as their stoping method, using pillars and elongates for support.

PRODUCTIVITY IMPROVEMENT IN UNDERGROUND COAL

than 90% of coal is obtained by the bord and pillar method, the predominant method of mining followed in India, and the rest is mined by the longwall mining method. The Indian coal mining industry has witnessed a persistent decline in under-ground coal production over the years with more emphasis on opencast mining.

Underground Mining Methods and Equipment

UNESCO EOLSS SAMPLE CHAPTERS CIVIL ENGINEERING Vol. II Underground Mining Methods and Equipment S. Okubo and J. Yamatomi ©Encyclopedia of Life Support Systems (EOLSS) Figure 2: Room-and-pillar mining Pillars of original bedrock are left to support rock pressures and to protect personnel.

EVALUATION OF PILLAR DESIGN SYSTEMS FOR LOW REEF

Aug 10, 2015 The success of a bord and pillar mining method in the exploitation of platinum heavily depends on a comprehensive and competent pillar design method. Pillars need to be large enough to contain load and to be small enough to avoid loss of resource. An optimum pillar design method achieves such a scenario.

PBE Mining Process PBE Technologies Pty Ltd

Flexible Plunge Conveyor System. Allows for the continuous evacuation of coal from the cutting face via linked conveyors directly to the surface of the mine. Permits the continuous miner to mine coal without having to stop for coal transport. Enables mining around the corner of the plunge cut entry. Proprietary technology developed by PBE.

Styldrift Royal Bafokeng Platinum

A trackless bord and pillar mining method is employed in the thicker Merensky resource areas with mining heights varying between 2.0m and 2.2m. A conventional hybrid breast mining layout is currently envisaged for the extraction of the narrow Merensky reef area.

MAJOR PROJECT ASSESSMENT: Mannering Colliery

facilities and conduct underground coal extraction by bord and pillar mining methods. Figure 1: Regional setting Mannering is a conventional bord and pillar mine, involving first workings in the Fassifern Seam. No secondary extraction is proposed in the project area and the conceptual mine plan has been designed

Coal mining methodsCoal mining methods

Coal mining methodsCoal mining methods (石炭採掘法)-- Green Coal Technology (GCT)Green Coal Technology (GCT) Safety first! Kikuo MATSUI, Dr. Eng., ProfessorProfessor Department of Earth Resources and Mining EngineeringDepartment of Earth Resources and Mining Engineering,

Mining Methods Indian Infrastructure

Mar 04, 2018 The demand for high quality coal can be met by adopting underground production methods such as cut-and-fill, bord-and-pillar, shrinkage stopping and longwall coal mining. These methods are supported by highly mechanised equipment. Key among these are continuous miners, longwall mining, load haul dumper and sub-level stoping. Continuous miners

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