Room And Pillar Coal Mining Ppt
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Room and Pillar Mining Method SlideShare
Oct 22, 2014· 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.
Design of Bord and Pillar method in coal mines
Feb 27, 2016· 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 key to the successful Bord and Pillar mining is selecting the optimum pillar size.
PPT Coal Mining PowerPoint presentation free to
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, or economics), a supplementary version of room and pillar mining, termed second mining
room and pillar coal mining ppt mobilistico
room and pillar coal mining ppt. Room And Pillar Coal Mining Ppt polrecreatienl 2 Room BordandPillar mining or continuous mining method 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
Coal Mining Methods Underground Mining Longwall & Room and
Coal Mining Methods Underground Mining Longwall & Room and Pillar Mining
PowerPoint Presentation
Acknowledgments Jeff Fields, Senior Engineer Jim Sublett, Senior Sourcing Specialist GAI Consultants, Project Designer Bob Turka, Senior Project Manager Mining History at the White River Mine Mined in the 1920s and 1930s using the room and pillar method No evidence of retreat or split pillar mining Mine was flooded To this day The pillars are
Room and Pillar Mining Method SlideShare
Oct 22, 2014· 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.
Room and Pillar Mining Presentation Template for Google
Jul 18, 2004· This presentation template 63363 is complete compatible with Google Slides. Just download PPTX and open the theme in Google Slides. Unfortunately, the item Room and Pillar Mining Presentation id 63363 which price is $1 has no available description, yet.
PPT DUST CONTROL IN ROOM AND PILLAR COAL MINING
dust control in room and pillar coal mining using improved scrubbers and improved spray configurations mine ventilation symposium 2008 reno, nv A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow id: 437b85-NzQzM
Coal Mining Methods Underground Mining Longwall & Room
Coal Mining Methods Underground Mining Longwall & Room and Pillar Mining
coal room and pillar mining watersaving.co.za
Underground soft rock mining is a group of underground mining techniques used to extract coal, Room-and-pillar mining or continuous mining Room and pillar mining is commonly done in flat or gently dipping bedded ores. Pillars are left in place in a regular pattern while the rooms are mined out. Shortwall mining A coal mining . Get Price
Room and Pillar Mining an overview ScienceDirect Topics
In room and pillar mining, seams of coal are mined partially, leaving large pillars of coal intact to support the overlying layers of rock. Mining by this method creates a network of alternating open spaces and large pillars of coal (Fig. 19.4(a)). When mining in one part of the coal seam has been finished, miners practice “retreat” mining
(PDF) Underground Mining Methods: Room and Pillar method
In room & pillar mining, high safety levels in design is important, and to achieve this, understanding the behaviour of the pillars is essential. [Show full abstract] bolter/miners for coal
Hard-rock room and pillar QueensMineDesignWiki
Room and pillar is an underground mining method that has applications to a wide variety of hard-rock deposits worldwide. It is commonly classified as an open-stoping method, meaning that development involves mining out underground cavities while leaving the
CHAPTER 11 Mining Technology
with the dominant underground mining tech-nology in the West—room-and-pillar mining with continuous miners. Federal coal reserves in the Rocky Moun-tain province provide the greatest near-term potential for the application of longwall min-ing. The first successful longwall operation in the West was the York Canyon Mine of Kai-
Bord-and-pillar mining explained Illawarra Mercury
May 31, 2017· In a coal mine, the 'bord' is actually a room or a space, not a badly spelled plank. Bord-and-pillar mining is used in first workings of a deposit, and when irregularly shaped deposits
Underground Mining Methods and Equipment
methods and brief explanations of the techniques of room-and-pillar mining, sublevel stoping, cut-and-fill, longwall mining, sublevel caving, and block caving. The second section describes underground mining equipment, with particular focus on excavation machinery such as boomheaders, coal cutters, continuous miners and shearers. 1.
Coal mining methodsCoal mining methods
Coal mining methodsCoal mining methods Room (Bord)Room (Bord)--andand--pillar pillar (Continuous miner and shuttle car) 2222. WongawilliWongawilli method and break line method and break line support(Bt(LBSL)S)t (BLS) 2323. Long all miningLongwall mining
Room and pillar mines, Mining Techniques, Underground
The room and pillar system is used in mining coal, iron and copper ores mainly when found as manto or blanket sediments, stone and aggregates, talc, soda ash and potash. The key to the winning room and pillar mining is opting the optimum pillar size. If the pillars are so small the mine will fall down.
Mining PowerPoint Templates and Google Slides Themes
Download Mining PowerPoint templates (ppt) and Google Slides themes to create awesome presentations. Coal Mining PowerPoint Template. PoweredTemplate. 3 Room and Pillar Mining Presentation. PoweredTemplate . Coal Mining from Above Presentation. PoweredTemplate . Drilling Platform PowerPoint Template. PoweredTemplate .
Room and Pillar Mining Presentation Template for Google
Jul 18, 2004· This presentation template 63363 is complete compatible with Google Slides. Just download PPTX and open the theme in Google Slides. Unfortunately, the item Room and Pillar Mining Presentation id 63363 which price is $1 has no available description, yet.
Templat PowerPoint Room And Pillar Mining, Gambar Latar
Dapatkan Templat PowerPoint Room And Pillar Mining dengan Gambar Latar yang kreatif dan 20 slide expert-quality dari PoweredTemplate dan presentasi PPT
Mining simulation for room and pillar coal
Mining simulation for room and pillar coal operation by S.P. Pereira*, J.F.C.L. Costa†, P. Salvadoretti†, and J. Koppe† Synopsis The mechanized mining cycle using loaders and shuttle cars had its peak in terms of usage in the mining industry during 1950 through 1960. In Brazil, this system is still used at underground coal mines
EVALUATION OF UNDERGROUND COAL PILLAR DESIGN
2.1. Bord and Pillar working method 6 2.2. Pillar Failure 7 2.3. Effect of mining method on pillar strength 8 2.4. Basic principles of pillar design 8 2.5. Pillar Strength Formulas 15 2.6. Factor of Safety 20 2.7. Size of pillars 21 2.8. Laboratory Techniques 22 3.
A Panel Of 30 Rooms In A Room And Pillar Coal Mine
A barrier pillar 15 metres in width will be left on three sides of the panel. A sketch of the mining plan is shown in the Figure above. Compute the percentage recovery for the mining panel in each of the following cases. a. No pillar recovery b. Recovery of chain pillars in rooms and entries c. Room width increased to 9 metres and no pillar
Indonesia Coal Mining Ppt huyzepeppins.be
COAL |authorSTREAM. Underground mining Underground mining Room and pillar is the more traditional method with long wall mining only being made possible in this century due to new technology In room and pillar, rectangular portions of the coal are blasted, with pillars left in place for support In long wall mining, the roof is temporarily
Hard-rock room and pillar QueensMineDesignWiki
Room and pillar is an underground mining method that has applications to a wide variety of hard-rock deposits worldwide. It is commonly classified as an open-stoping method, meaning that development involves mining out underground cavities while leaving the
CHAPTER 11 Mining Technology
with the dominant underground mining tech-nology in the West—room-and-pillar mining with continuous miners. Federal coal reserves in the Rocky Moun-tain province provide the greatest near-term potential for the application of longwall min-ing. The first successful longwall operation in the West was the York Canyon Mine of Kai-
Coal mining methodsCoal mining methods
Coal mining methodsCoal mining methods Room (Bord)Room (Bord)--andand--pillar pillar (Continuous miner and shuttle car) 2222. WongawilliWongawilli method and break line method and break line support(Bt(LBSL)S)t (BLS) 2323. Long all miningLongwall mining
MINE VENTILATION SYSTEMS
b) Room and pillar systems Figure 9-4 shows the two methods of ventilating a room and pillar development panel in a coal mine where multiple entries are driven. Figure 9-4a is the directional, or W-system, in which intake air courses are airways in the central portion of
Africa Coal Mining Ppt
Coal Mining Methods In South Africa Ppt. 2019-11-20although the united states has the vast coal resource described in the previous chapter, perhaps as much as 4 trillion tons, the key issue for policy makers is the amount of coal that is economically recoverableis is not a fixed quantity, but depends on the geological resource, the market price
Room and pillar mines, Mining Techniques, Underground
The room and pillar system is used in mining coal, iron and copper ores mainly when found as manto or blanket sediments, stone and aggregates, talc, soda ash and potash. The key to the winning room and pillar mining is opting the optimum pillar size. If the pillars are so small the mine will fall down.
PARAMETRIC STABILITY ANALYSIS OF ROOM AND PILLAR
Keywords: Haulage drift- Stability indicators- Numerical Modelling- Mining Step. 1. Introduction Room and Pillar is so named, because pillars of coal are left standing to help support the roof of the mine. It is also called pillar and stall in which ore is extracted across a
Bord-and-pillar mining explained Illawarra Mercury
May 31, 2017· In a coal mine, the 'bord' is actually a room or a space, not a badly spelled plank. Bord-and-pillar mining is used in first workings of a deposit, and when irregularly shaped deposits
Mining simulation for room and pillar coal
Mining simulation for room and pillar coal operation by S.P. Pereira*, J.F.C.L. Costa†, P. Salvadoretti†, and J. Koppe† Synopsis The mechanized mining cycle using loaders and shuttle cars had its peak in terms of usage in the mining industry during 1950 through 1960. In Brazil, this system is still used at underground coal mines
PARAMETRIC STABILITY ANALYSIS OF ROOM AND PILLAR
Keywords: Haulage drift- Stability indicators- Numerical Modelling- Mining Step. 1. Introduction Room and Pillar is so named, because pillars of coal are left standing to help support the roof of the mine. It is also called pillar and stall in which ore is extracted across a
CHAPTER 11 Mining Technology
with the dominant underground mining tech-nology in the West—room-and-pillar mining with continuous miners. Federal coal reserves in the Rocky Moun-tain province provide the greatest near-term potential for the application of longwall min-ing. The first successful longwall operation in the West was the York Canyon Mine of Kai-
Africa Coal Mining Ppt
Coal Mining Methods In South Africa Ppt. 2019-11-20although the united states has the vast coal resource described in the previous chapter, perhaps as much as 4 trillion tons, the key issue for policy makers is the amount of coal that is economically recoverableis is not a fixed quantity, but depends on the geological resource, the market price
EVALUATION OF UNDERGROUND COAL PILLAR DESIGN
2.1. Bord and Pillar working method 6 2.2. Pillar Failure 7 2.3. Effect of mining method on pillar strength 8 2.4. Basic principles of pillar design 8 2.5. Pillar Strength Formulas 15 2.6. Factor of Safety 20 2.7. Size of pillars 21 2.8. Laboratory Techniques 22 3.
EVALUATION OF BORD AND PILLAR MINING SYSTEM IN MCL
mining and its development correlate closely with cultural progress. Mining processes involve prospecting for ore bodies, analysis of the profit potential of a proposed mine, extraction of the desired materials. One of such methods is the Bord and Pillar method of mining. Bord and Pillar method of mining is one of the oldest methods of mining.
Pillar design incoalmines SAIMM
of bOld-and-pillar mining methods are widened to a coal-to-waste ratio of1:5and40percentlostcoal,then almost 63per cent ofthe country's coal reserves fall within thescopeofbord-and-pillar mining. From theabove discussion itfollowsthat considerable benefit canbegained fromacritical examination ofthe principles underlying thedesign ofcoalpillars.
Bord-and-pillar mining explained Illawarra Mercury
May 31, 2017· In a coal mine, the 'bord' is actually a room or a space, not a badly spelled plank. Bord-and-pillar mining is used in first workings of a deposit, and when irregularly shaped deposits
Room and pillar / entry development Underground mining
The Joy room and pillar/entry development product suite is extremely robust, including continuous miners, entry development equipment, haulage systems, feeder breakers, bolters, and loaders. All our equipment is designed to work seamlessly together as a system, providing the
Retreat Mining, Room and pillar mining, Underground Mining
Retreat Mining. Retreat mining is the last phase of a general kind of coal mining technique referred to as room and pillar mining. In room and pillar mining a mining machine called as "continuous miner" bores a network of chambers or "rooms" into a coal seam, leaving at the back an unexcavated pillar of coal in every room to support the roof of the mine.
CDC Mining Toward Pillar Design To Prevent Collapse of
In some instances, extensive room-and-pillar workings can collapse with little warning and pose a serious risk to underground miners. Traditional strength-based pillar design methods applicable to coal or hard-rock mines use a factor of safety defined as pillar strength divided by pillar stress.
22 Auxiliary Operations Auxiliary operations in room and
2.2 Auxiliary Operations Auxiliary operations in room and pillar mining are very similar for all mineral commodities and with all production equipment. The following points are generally incorporated: Health and safety: gas control (e.g., methane drainage in coal), dust control (rock dust, water spray, dust collector), ventilation (line brattice, fan and vent tubing), and noise abatement
Room and pillar mines, Mining Techniques, Underground
The room and pillar system is used in mining coal, iron and copper ores mainly when found as manto or blanket sediments, stone and aggregates, talc, soda ash and potash. The key to the winning room and pillar mining is opting the optimum pillar size. If the pillars are so small the mine will fall down.
Optimization of room-and-pillar dimensions using automated
Sep 01, 2019· Room-and-pillar (R&P) mining is a method of extracting a series of rooms (i.e., long horizontal openings) while leaving behind pillars of ore, rock, or coal. In hard rock masses, pillar widths are smaller than entry widths. Pillars can be constituted solely of