• coal production by bord and pillar india

    Coal Production By Bord And Pillar India. Coal Production By Bord And Pillar India. 2012 and pillar coal mines Schematic layout of a bord and pillar mineGet Price; STANDARD PROCEDURE FOR GRANT OF EQUIPMENT APPROVAL India STANDARD PROCEDURE FOR GRANT OF EQUIPMENT APPROVAL BY DGMS. 1.0 PREAMBLE . The objective is documentation of theGet Price

  • 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.

  • Coal pillar extraction at deep cover: With special

    May 01, 2011· Research Highlights Indian geo-mining scenario of coal pillar extraction is provided. Status of bord and pillar mining for deep coal seams is reviewed. Inherited instability issues of natural support during depillaring of a deep seam under competent roof (high stress conditions) are discussed. Influence of caving of competent overlying strata during extraction of deep seated pillars is shown

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  • EVALUATION OF BORD AND PILLAR MINING SYSTEM IN MCL

    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.

  • Applicability of Continuous Miner in Room and Pillar

    Underground coal production in India is driven by demand and achieved by mostly using Bord and Pillar mining methods- a variation of sorts of Room and Pillar mining, and little by longwall mining.

  • Productivity Improvement in Underground Coal Mines A

    Jan 01, 2013· Of the total output of coal from underground mines, more 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.

  • Bord & Pillar Method Mining Coal

    After the headings reach a certain line or boundary or after complete development of the mine leasehold, coal pillars formed are extracted for complete removal of coal. This stage of extraction of coal from the pillars or reduction of coal pillars is known as depillaring. Basic parameters of bord and pillar mining system 1. Gallery (bord) 2

  • (PDF) Applicability of Continuous Miner in Room and Pillar

    Pillar extraction is the m ost extensive exercise in both Bord and Pillar coal efficiently. India is also one of the major players globally in the arena of coal production and adopted this

  • Characterization of coal mine panels in bord and pillar

    (India) for evaluation of fire risk rating of underground coal mine panels in bord and pillar working in respect of their proneness to spontaneous heating, is presented in this paper. The concept used in this model is innovative and user friendly. This model may be applied to a panel where extraction is carried out using any of the

  • 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

  • COAL MINING TECHNOLOGY e-library WCL

    •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.

  • EVALUATION OF BORD AND PILLAR MINING SYSTEM IN

    Bord and Pillar method of mining. Bord and Pillar method of mining 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 decrease leading to less production and profitability and if the pillars

  • Applicability of Continuous Miner in Room and Pillar

    Underground coal production in India is driven by demand and achieved by mostly using Bord and Pillar mining methods- a variation of sorts of Room and Pillar mining, and little by longwall mining.

  • Bord and Pillar mining by continuous Miner in HINDI YouTube

    Jul 29, 2016· Please watch: "Mines Act 1952 Video No 1, Committee With MCQ In HINDI ," https://youtube/watch?v=USzxioNpomo -~-~~-~~~-~~-~- Bord and pillar is.

  • Author: Mining Video
  • OPTIMUM UTILISATION OF CONTINUOUS MINER USED FOR

    tons of coal reserves are locked up in the form of coal pillars in India. Varying geo-mining conditions make it extremely difficult to extract more than 30 percent of the total coal reserve by Bord-and-pillar method, which is again the most popular method adopted in India. In fact, these reasons lead

  • Bord & Pillar Method Mining Coal

    After the headings reach a certain line or boundary or after complete development of the mine leasehold, coal pillars formed are extracted for complete removal of coal. This stage of extraction of coal from the pillars or reduction of coal pillars is known as depillaring. Basic parameters of bord and pillar mining system 1. Gallery (bord) 2

  • University of Wollongong Research Online

    subsidiary of Coal India Limited. DETAIL LAYOUT AND METHOD OF WORKING . The mine there is being worked by Bord and Pillar method in which continuous miners are being used as the main equipment for extracting coal. The Pillar size which is being kept for support of the overburden pressure is 35 m x 35 m, 40 m x 40 m and 40 m x 35 m.

  • Logistic regression model for prediction of roof fall

    253 Indian coal miners lost their lives and 401 are seriously injured in 490 different roof fall accidents. In India, 32.7% of the total fatal injuries in coal sectors are due to roof fall in bord and pillar method of workings. This paper attempts to predict the severities of roof fall

  • PPT Coal Mining PowerPoint presentation free to

    world coal production. 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

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

    Apr 17, 2015· 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,

  • Bord-and-pillar mining in inclined orebodies

    Bord-and-pillar mining in inclined orebodies Reduce mining costs by increasing the production tonnage and reducing production costs with the effective mechanized drilling and cleaning method Increase the underground labour efficiency (tons extracted per employee) Adhere

  • v117n3a2 Factors and challenges affecting coal recovery by

    pillar coal remaining from a previous bord-and-pillar operation that reached its end of life in the 1980s. The underground mine was operated using the conventional drill-and-blast, bord-and-pillar mining method. The pillars were left intact when the underground operation was shut down. In 1995, a project to extract the remaining

  • EVALUATION OF UNDERGROUND COAL PILLAR DESIGN

    ―Evaluation of Underground Coal Pillar Design‖ and later on for his inspiring guidance, The most important aspect of Bord and Pillar mining is the design of pillars. The design of Pillars of underground mines in India. 3 1.3 Methodology

  • Long-wall mining making a comeback in India

    Given compulsions to increase coal production from underground mines, longwall mining technology was seemingly making a comeback in India. The country’s largest coal miner Coal India Limited and

  • une, 2018 Future of Bulk Production from Underground Coal

    development in India Most of the underground coal mines in India are conventional Bord & Pillar with manual loading or SDL/LHD loading. For mechanised mass production through UG, prevailing technologies adopted till now in Indian mines are: (i) Powered Support Longwall Technology (ii) Continuous Miner Technology (Bord/Room & Pillar);

  • EVALUATION OF UNDERGROUND COAL PILLAR DESIGN

    ―Evaluation of Underground Coal Pillar Design‖ and later on for his inspiring guidance, The most important aspect of Bord and Pillar mining is the design of pillars. The design of Pillars of underground mines in India. 3 1.3 Methodology

  • Bord & Pillar Method Mining Coal

    After the headings reach a certain line or boundary or after complete development of the mine leasehold, coal pillars formed are extracted for complete removal of coal. This stage of extraction of coal from the pillars or reduction of coal pillars is known as depillaring. Basic parameters of bord and pillar mining system 1. Gallery (bord) 2

  • OPTIMUM UTILISATION OF CONTINUOUS MINER USED FOR

    tons of coal reserves are locked up in the form of coal pillars in India. Varying geo-mining conditions make it extremely difficult to extract more than 30 percent of the total coal reserve by Bord-and-pillar method, which is again the most popular method adopted in India. In fact, these reasons lead

  • Logistic regression model for prediction of roof fall

    253 Indian coal miners lost their lives and 401 are seriously injured in 490 different roof fall accidents. In India, 32.7% of the total fatal injuries in coal sectors are due to roof fall in bord and pillar method of workings. This paper attempts to predict the severities of roof fall

  • Underground coal mine by Indian minerology YouTube

    Oct 09, 2017· Underground coal mine :- Most coal seams are too deep underground for opencast mining and require underground mining, a method that currently accounts for about 60 percent of world coal production

  • Long-wall mining making a comeback in India

    Given compulsions to increase coal production from underground mines, longwall mining technology was seemingly making a comeback in India. The country’s largest coal miner Coal India Limited and

  • Lochinvar (Coking Coal) NAE Mining

    An additional 7 Mt of coal resource in the Six Foot Seam between 200m and 400m depth of cover also has the potential to be mined via the Bord & Pillar method. The Exploration Target within the Lochinvar North licence may also offer potential for Bord and Pillar mining, subject to further exploration and confirmation of resources.

  • Bord-and-pillar mining in inclined orebodies

    Bord-and-pillar mining in inclined orebodies Reduce mining costs by increasing the production tonnage and reducing production costs with the effective mechanized drilling and cleaning method Increase the underground labour efficiency (tons extracted per employee) Adhere

  • Coal India Limited case study radhika lalit

    Jun 18, 2016· Coal Production, Quality and Price Figure 3: India's domestic coal consumption, production and production targets (FY 2005-20) in million metric tons (Source: EIA) Between 2004 and 2012, CIL’s production increased by just 65 million tons to 436 million tons, growing at a rate of 2.3% per year on an averagelv .

  • PRODUCTIVITY IMPROVEMENT IN UNDERGROUND COAL

    India has emerged as the third largest coal producer in the world after China and USA with a 9% share of the total glo-bal coal production. While the coal production from under-ground mining in countries like China, USA and Australia are about 95, 33 and 20% respectively, India produces only about 15% of coal from underground mines (Prasad 2009).

  • 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 surrounding un-mined waste or

  • miningst

    The top coal seam V was developed by the bord and pillar system in two sections 3 cm high, leaving a 3 cm parting in the middle and I cm coal in the floor. The galleries in the upper section were staggered. The width of the galleries was 4 cm and edge to edge pillar length 20 cm. The displacements recorded after drivage of 7 galleries in

  • "A METHOD FOR SOLID BLASTING IN UNDERGROUND COAL

    Bord and pillar method is the predominant underground coal mining system in India, contributing over 90% of the total underground coal production. Winning of coal from bord and pillar method in underground coal mines using explosives in India is done by either (i) cut face blasting using P3/P1 explosives with instantaneous detonators or (ii