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Coal Production from opencast mines in India (FY 1998-99 to 2016-17) Source: Coal Directory of India, FY 1998-99 to 2016-17 ... roof subsidence, mine f ire, explosion, e mission . of toxic gases ...
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The accident due to flyrock remains one of the major contributors of fatal and serious accidents in opencast mines. The 'Danger Zone' as given in Coal Mine Regulations has already been increased from 300 to 500 m in the new Coal Mines Regulation [Reg. 196 (2) (b)] to avert flyrock-related accidents in opencast coal mines. …
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Abstract: This paper deals with the controlled blasting techniques implemented to control over-breaks, blast induced blast vibration and to aid in the …
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The study was completed using a combination of rock explosion dynamics, rock mechanics and theoretical foundations of step blasting in opencast mines, using numerical simulation methods to guide ...
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Explosion Chamber for Studying the Explosibility Behaviour of Coal Dust . Min Ignition Energy (MIE) Apparatus for Determining Minimum Ignition Energy of Coal Dust ... IV/ 2 & 3 opencast mine of Raigarh Area, SECL. South Eastern Coalfields Limited : 18: Advice on determining the state and extent of the fire, its rate of progress at sarubera (E ...
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These explosives are exploding at velocities of 1500 to 8000 m/s and produce large volume of gases at considerable heat and high pressures. These are classified into two …
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59%; opencast spoil banks, 20%; concentrating mill tail-ing dumps, 13%; mine dumps, 5%, and lands that were unsuitable due to surface subsidence and holes, 3%. Of all alienated lands, 40% fall on the coal industry, 18% on sand and gravel mining enterprises, 14% on enterprises producing stone materials, 5% on plants
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Blasting is one of the cheapest and effective methods for breaking rock mass in open-pit mines. However, its side effects are not small such as ground vibration (PPV), air overpressure, fly rock, back break, dust, and toxic. Of these side effects, blast-induced PPV is the most dangerous for the human and surrounding environment. …
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The opencast mines after extraction of coal are generally left open and filled with mine spoil. The filled up opencast mines due to rapid increase in population are seeking attention in terms of rehabilitation for best possible use. ... Figure 1 shows the general site configuration of the underground explosion that is similar to mine explosion ...
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Self heating of coal can appear in underground coal mines, opencast mines, coal stockpiles, transportation and during the disposal of barrens from coal applying industries in heap wastes. ... if not deal with effectively and efficiently in the early stages can produce into open fires or into an explosion of gas or dust, with ravaging results ...
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3 Citations. Explore all metrics. Abstract. Blasting has been one of the most important contributors of mining since the start of mineral extraction and excavation. …
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An opencast colliery of the BCCL at Jharia in Dhanbad. Shabbir Hussain. Jharkhand-based Indian Institute of Technology Indian School of Mines IIT (ISM) mining engineering research unit has done research to prevent fire and explosion in mines and ensure better safety. Associate professor of mining engineering department of the …
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The mine is currently producing 14 Mt of coal per annum. Sonepur Bazari project of Eastern Coalfields Limited is located in the eastern part of Raniganj Coalfields. Four coal seams, i.e. RIV, R-V, R-VI and R-VII, are …
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A series of bench blasting productive tests were conducted in Heishan coal mine in Xinjiang, China. The rock mass of the quarry is slightly weathered sandstone, the saturation moisture compressive strength is 24–42 MPa, and the natural density is 2.41–2.69 g/cm 3.The blasthole diameter used in the previous blasts is 138 mm, and the …
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The Barun Open-pit Mine has formed a 2-benches or 4-benches parallel mining condition due to the steep end-slope mining. In the enlarging process, the operation safety conditions of equipment are ...
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Explosives and Blasting in Open Cast PDF Explosion Nature - Scribd EXPLOSIVES AND BLASTING OPENCAST Author: Partha Das Sharma Email: sharmapd1 gmail INTRODUCTION TO EXPLOSIVES AND ACESSORIES Definition of Explosives : Explosives is a chemical compound or mixture, when exploded by action of heat, impact, …
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PDF | On May 18, 2020, Radharapu Sampath published Blast Design in Opencast Mines | Find, read and cite all the research you need on ResearchGate.
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From the analyses, the opencast mining area, workshop and coal handling plant for the area variable; hand tools and mining machine for the reason variable; lower extremities for the part of the body variable; as well as the 35–44 age group for the age variable are important risk factors for accidents with greater than 3 lost workdays when …
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1. Introduction. Blast-casting practice in opencast coal mines is characterised by large blast hole diameter and large charges. The powerful energy produced by the explosive would …
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OPENCAST MINE 1Mithilesh Kumar Rajak, 2M.J.A .Prince 1Assistant Professor, 2Assistant Professor 1Dept. of Mining Engineering 1AMET University, Chennai, India ABSTRACT: Fragmentation is one of the critical results of the blasting also treated as first quality demand in most types of blasting which
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San Francisco, CA 94104, USA. +1-628-201-9788. Fax - +1-415-962-0669. info@irispublishers. In blasting, explosive is a reactive substance that contains a great amount of potential energy that can produce an explosion if released suddenly, usually accompanied by the production of light, heat, sound, and pressure.
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Keywords: overburden dump, slope stability, opencast mining, shear strength parameters. 1. INTRODUCTION The increased demand of coal, as a source of power, owing to rapid industrialization and population explosion, has forced the opencast coal mines to turn toward higher mechanization for extraction of coal and
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Coal mining is carried out by both opencast and underground mining methods. As of 2016, there are 252 operational underground coal mines, which contribute 7% ... Inadequate ventilation to the mine working, chance of fire and explosion: Leakage in ducts: Poor ventilation, accumulation of gases, chance of fire and explosion ...
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92-2-107103-0 [ISBN] Download: pdf - 0.5 . This code applies to any situation or operation involving occupational safety and health aspects in opencast …
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Opencast mining has the advantages of high resource recovery rate, good safety conditions, high labour e˜- ... energy in the explosion while reducing the blast generated by carbon dioxide ...
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excavating a mineral resource through creates an opencast mine. An explosive is a solid or liquid substance or a mixture of substances which, in a short period of time after …
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The Use of Explosives in Surface Mining. Chapter. pp 105–151. Cite this chapter. Download book PDF. Download book EPUB. Quarrying Opencast and Alluvial Mining. John Sinclair …
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Slope Failure Mechanism and Monitoring Techniques. S.K. Chaulya, G.M. Prasad, in Sensing and Monitoring Technologies for Mines and Hazardous Areas, 2016 Abstract. Opencast mining operations involve huge quantities of overburden removal, dumping and backfilling in excavated areas. A substantial increase in the rate of accumulation of waste …
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Grand-daddy of mines on the Coast—Coalcorp's opencast Stockten mine sprawls over 2300 hectares, employs 119 and is expected to produce 1.2 million tonnes of coal this year. Some is so pure that it is used for making the carbon fibres that impart strength to shafts of squash rackets and yacht hulls, and the activated carbon in water purifiers.
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Mining enterprises are widely introducing digital technologies and automation is one of such tools. Granularity monitoring, namely, the size determination of rock mass pieces is a common operational component of the processes that extract minerals by open-pit mining. The article proposes an approach that, in addition to the …
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