bord and pillar method ppt

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Study Material | Mine Portal - India's Mining Exams ...

Description Of Indian Coalfields. Nature And Occurence Of Coal Seams. Reserves & Resource Terminology. Boring Methods. Bord & Pillar Method Of Working. Contiguous Working. Underground Method Of Mining. LONGWALL MINING. Thick Seam Mining.

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Safety, Health, and Environment TPM pillar – Continuously ...

May 02, 2020· SHE pillar vision is to cultivate a Continuous Improvement culture that achieves a sustained record of Safety, Health, & Environmental excellence & realizes our vision:. ZERO accidents, ZERO incidents, ZERO losses. The SHE Pillar is the cornerstone TPM Pillar that supports and lends stability to the overall continuous improvement process and all of the other TPM Pillars.

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Coal mining methods - SlideShare

Apr 03, 2017· Bord and Pillar method, Longwall method and short wall method are the most commonly used mining method. 1). Bord and Pillar method:1). Bord and Pillar method: The Bord and Pillar method of mining coal seam involve the driving of a series of narrow heading in the seams parallel to each other. These headings are connected by cross headings so as ...

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

Bord and pillar mining. This diagram shows the traditional method of bord and pillar mining. Miners extracted coal along roadways or bords, with the coal between the bords acting as pillars holding up the roof. The outer pillars were then mined, leaving the roof to collapse in a controlled way as the miners retreated towards the exit.

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Blasting Gallery Method | Coal Mining | Mining

Blasting Gallery Method - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. It is about blasting gallery method full detail about this method is given in this PDF ... GDK-8, where bottom section was developed by bord and pillar method along the floor of the seam. ii. VK-7 ...

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PPT – Coal Mining PowerPoint presentation | free to ...

World's Best PowerPoint Templates - CrystalGraphics offers more PowerPoint templates than anyone else in the world, with over 4 million to choose from. Winner of the Standing Ovation Award for "Best PowerPoint Templates" from Presentations Magazine. They'll give your presentations a professional, memorable appearance - the kind of sophisticated look that today's audiences expect.

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The First Steps to an EFFECTIVE Planned Maintenance Pillar ...

Oct 09, 2017· PM Pillar must ensure that maintenance areas go through the same 5 S and AM Step 1 activities that the lines go through. Concept of forced deterioration. Assist in eliminating Sources of contamination. Assist in eliminating Hard to Access areas. Record all Breakdowns – Classify by the "5 Reasons" for breakdowns.

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Design of Bord and Pillar method in coal mines

Feb 27, 2016· 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 key to the successful Bord …

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Pillar design - QueensMineDesignWiki

The strength of pillars are highly dependent on the geological conditions of the mine and there is no universal pillar design method. The following pictures show the potential failure modes that need to be considered for pillar design which are spalling (hourglassing), shear fracturing (geology and stress), bulking/bulging (geology) and ...

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Jishu Hozen: Autonomous Maintenance Pillar of TPM - Lean ...

Jishu Hozen is a Japanese word that means autonomous maintenance. "Jishu" loosely translated, means – independence, autonomy. "Hozen" when translated to English means – preservation, integrity or conservation. Jishu Hozen is one of the eight pillars of Total Productive Maintenance, the other seven being: Focussed Improvement ...

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Bord and Pillar Coal Cutting Machine ~ Mining

Jan 22, 2014· Coal cutting machine is used in bord and pillar mining method of underground coal mining to make Undercut, Overcut or Middlecut to provide free face for the blasting operation. The headings are Undercut, Overcut or Middle Cut by a coal cutting machine and shot holes are then drilled and charged with explosives and blasted.

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Underground Mining Methods - UFRGS

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 resources in open stopes. The method leaves pillars to support the

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Bord and Pillar Design - UCMM ppt presentation (5th March ...

Bord and Pillar Method of Underground Mining, It's Development and Design ( Power Point Presentation of the Journal)By - AYUSH ANSHUMAN SUPAKARRoll No. - 118...

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Model of room and pillar production planning in small ...

Mar 01, 2020· The room and pillar method is very old method and applied to horizontal or nearly horizontal deposits that has been adapted and refined over the years (Hartman and Mutmansky, 2002).In room and pillar mining is a self-supporting method, some pillars of ore are left in place to support the rock that encompasses the ore body, while the remaining ore is extracted (Hamrin, 1997).

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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...

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.ppt - book118

Apr 18, 2017· .ppt 45. .ppt. 45. : xuefei111. : 1.01 . : 1.33. : 2017-04-18. : 2. : …

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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.

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typical bord and pillar mine plan ppt - BINQ Mining

Mar 14, 2013· Bord-and-pillar mining in inclined orebodies. during underground bord-and-pillar mine visits. Three underground mine visits were made, RPM …. Plan area 257478 m2 Average dip 18 …. » More detailed. bord and pillar mining. bord and pillar mining india. room and pillar mining. room and pillar mining method.

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Mining methods2 - SlideShare

Oct 23, 2011· Mining methods2. 1. Underground Mining Methods. 2. Ore body elements dip Width,thickness hanging wall footwall overburden horizontal exetend Vertical extent. 3. Ore body geometry Seam or flat dipping vein Steeply dipping vein Massive deposit Dip < 10 ° Thickness is much less than horizontal extend Medium dipping vein Dip > 45 - 50° Thickness ...

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Bord And Pillar Mining Method Pdf - praxis-lacroix.de

Bord Pillar Method Mining Coal Scribd. Basic parameters of bord and pillar mining system 1 gallery bord 2 pillar 3 junction calculation of percentage of extraction during development if coal from the full seam thickness is extracted the percentage of extraction during development is nearly 20 in deep mines and 35 in shallow mines. Online Chat

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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.

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WORLD CLASS TRAINING BASIC - Chrysler

Safety steps 1-3 pillar basics overview Course objectives Expected benefits • Safety Matrix and Safety model area definition • Safety pillar team definition • Preliminary activities set up Upon course completion the learner will be able to: • Understand Safety pillar principles • Know the pillar …

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An Introduction to Total Productive Maintenance (TPM)

This pillar is aimed at reducing losses in the workplace that affect our efficiencies. By using a detailed and thorough procedure we eliminate losses in a systematic method using various Kaizen tools. These activities are not limited to production areas and can be implemented in administrative areas as well.

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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 …

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Underground Mining Methods and Equipment

Of the unsupported methods, room-and-pillar mining is employed for extraction of flat-dipping and tabular deposits, whereas shrinkage and sublevel stoping are applied to vertical or steeply inclined ore bodies. Shrinkage stoping has in the past been very popular, particularly in non-coal mining. Gravity can be utilized for ore transportation

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BORD AND PILLAR METHOD.pptx - Under Ground Mining Board ...

View Test Prep - BORD AND PILLAR METHOD.pptx from ENG 286 at Davidson College. Under Ground Mining Board and Pillar Method Branch : Mining and Min Surveying Engg. Presentation By : …

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Digging deeper: Mining methods explained | Anglo American

The underground mining methods we use include room and pillar, narrow vein stoping and large-scale mechanised mining. Room and pillar mining is a style of mining where tunnels are driven in a chess board pattern with massive square pillars between them which are gradually cut away as the work proceeds. We use this for mining coal.

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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 ...

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