The non-pillar mining technology of roof cutting and pressure releasing with automatically formed roadway(AFR) is a new type of coal mining method, which takes advantage of the mining pressure and ...
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The results obtained were applied at the Zhengtong Coal Industry in engineering practice, resulting in an average monthly progress of more than 200 m, which is more than three times more efficient ...
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The worst of these disasters was an explosion that killed 362 people in a coal mine in Monongah, W.Va in 1907. An explosion similar to this week's occurred at Sago Mine in Buckhannon, W.Va in 2006 ...
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China is home to the most complicated geological conditions for coal mining in the world. As such, China's coal mine water hazard types are based on: (1) the various geological and hydrogeological structures associated with coal seams throughout time and space; (2) the spatial relationship between major water-filling sources and the mining …
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As the working in coal mine gets deeper the methane content of the coal seam increases. This increased quantity is controlled by the combination of adequate …
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Coal is the most abundant fossil fuel on Earth. Its predominant use has always been for producing heat energy. It was the basic energy source that fueled the Industrial Revolution of the 18th and 19th centuries, and the industrial growth of that era in turn supported the large-scale exploitation of coal deposits. Since the mid-20th century, …
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This paper reports US Bureau of Mines (USBM) research on the explosibility of coal dusts. The purpose of this work is to improve safety in mining and other industries that process or use coal. Most of the tests were conducted in the USBM 20 litre laboratory explosibility chamber. The laboratory data show relatively good agreement …
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A coal dust explosion is caused by a mixture of concentrations of coal dust and air that reaches the explosion limit and meets a high-temperature fire source. These two factors are taken as intermediate events of a fault tree, to conduct a further analysis and determine the various factors that influence the occurrences of such events.
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The Senghenydd Colliery disaster occurred at the Universal Colliery in Senghenydd near Caerphilly, Glamorgan, Wales, on 14 October 1913. It is the worst ever mining tragedy in the United Kingdom leading to the …
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Slide 1. Best Practice Guidance for Effective Methane Drainage and Use in Coal Mines. Best practice gas control and explosion prevention. Presented by Dr David Creedy. …
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Accompanying the intensification and increasing efficiency of coal production and the conducting of mining operations at deeper and more remote areas of mines, …
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Introduction. Coal is one of the main energy sources in the world, and the longwall mining method is widely used by miners due to good ventilation and high efficiency. 1, 2 The traditional longwall mining method excavates two mining roadways and reserves one coal pillar3, 4, 5 to maintain the stability of the roadways for the next …
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Thus, in the underground production of coal mines, the main factor leading to gas explosion accidents is inadequate technical management, which directly affects the …
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Protective seam mining is the most economical and effective measure for eliminating coal and gas herniation. To study the unloading effect of the mining of a protective seam on the protected layer, and to better grasp the effect of the protective layer on the abatement, conventional triaxial tests were conducted on coal samples with the …
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Prevention. To prevent coal dust explosions and limit the amount of inhaled dust particles to reduce injury, limestone powder is sprayed along the walls of mines on a regular basis. In the event of an explosion, the surface limestone layer absorbs heat that is generated from the explosion to reduce its intensity.
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Abstract. Firedamp and coal dust explosion constitute a lion's share in mine accidents in a global mining scenario. This paper reports a list of mine explosion disasters since last two decades ...
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The need to control and eliminate the propagation of explosions by means of explosion-suppression systems remains an important requirement in underground coal mines.
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Basic options are to prevent the occurrence and accumulation of flammable bodies of methane and to eliminate sources of ignition such as open flames, frictional and …
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Explosions in Underground Coal Mines. Risk Assessment and Control. Home. Book. Authors: Jianwei Cheng. Provides practical information for coal mine management and …
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The committee realizes that mine disaster prevention is a complex area requiring expertise in several fields such as (1) mining engineering; (2) fires and fire control engineering; (3) methane, coal, pyrite, and other explosives—their initiation, progression, and control; and (4) the impact of all of these on normal mine operations, disaster ...
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The prevention and control of gas explosion accidents are important means to improving the level of coal mine safety, and risk assessment has a positive effect on eliminating the risk of gas explosions. Aiming at the shortcomings of current risk assessment methods in dynamic control, state expression and handling uncertainty, …
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A total of 125 coal mine gas explosion accident reports in China from 2010 to 2020 were considered as the original data, and 30 causal factors of gas explosion accidents were extracted from the macro, meso, and micro levels. ... Thus, the effective management and control of coal mine gas explosion risks has faced challenges …
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The occurrence of methane explosions in the Polish mining industry between 2013 and 2108 are analyzed. Fatal accidents are compared with similar events in the global mining industry. The methods of preventing the explosion hazard as well as methane emission control in the Polish coal mining sector are presented.
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It will discuss inspection and monitoring of mine atmospheres, dilution of methane through ventilation, methane drainage prior to, during and post-mining, as well as explosion prevention through rock dusting and sealing of mined-out areas. Recent research findings of NIOSH, Pittsburgh Research Laboratory on the magnitude of …
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"A distant boom," then the ground moved. An Inside Climate News review of state and federal mining records confirms that Griffice's home is located over a proposed expansion of an underground longwall mine—in which bladed machines shear off slices of coal along vast expanses—operated by Crimson Oak Grove Resources, LLC, one of the …
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Soma coal mine disaster, Turkey also claimed 301 precious lives in 2014. Düzgün and Leveson in 2018 ... Chapter 11 and 12 of CMR 2017 discusses steps to control the firedamp and coal dust explosion in mines: Accumulation of methane and carbon dioxide with a high percentage in the mine should be investigated. Measures for …
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China's coal mine production situation is grim and various types of accidents occur frequently, and gas explosion accidents are the highest incidence of coal mine accidents. The authors selected 200 gas explosion accidents of coal mine enterprises in recent years, and extracted a large number of workers' unsafe behaviors.
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Coal seam >95% CH4 Open goaf 15% - 5% CH4 Airway <2% CH4 In situ coal seam gas usually comprises high purity methane. Flammable gases are only produced once a coal seam is disturbed by mining and the released gas mixes with air. Mixing of air and methane occurs in the open goaf behind the coalface. Before the gas is diluted to safe ...
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DOI: 10.1007/978-3-319-74893-1. Corpus ID: 134207451. Explosions in Underground Coal Mines: Risk Assessment and Control. Jianwei Cheng. Published 2018. …
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The mission of the NIOSH research program for the mining sector is to eliminate occupational diseases, injuries, and fatalities among workers in the mining industry. Therefore, explosion protection research at NIOSH is focused on continually improving the safety of miners. Certain explosion-protected equipment used in other …
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Coal mining should provide restoration for abandoned mining areas. Mines Rescue Rules, 1985: The coal mines rule was replaced by Mine Rescue Rule 1985, which was created with the purpose of providing rescue of the persons working in the mines in the event of explosions, fires, gas explosion, inundation, etc. It is applicable in both Coal …
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The risk of coal mine gas explosion seriously threatens the continuous safe production of coal mines, which in turn affects the national energy security, so it is important to prevent and control the coal mine gas risk. Current risk assessment methods are difficult to fully express the uncertainty in the assessment process, and calculating ...
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DOI: 10.1016/j.ijrmms.2022.105186 Corpus ID: 251612243; Roof-cutting and energy-absorbing method for dynamic disaster control in deep coal mine @article{Wang2022RoofcuttingAE, title={Roof-cutting and energy-absorbing method for dynamic disaster control in deep coal mine}, author={Qi Wang and Bei Jiang and …
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The prevention and control of gas explosion accidents are important means to improving the level of coal mine safety, and risk assessment has a positive effect on …
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Fire and explosion are the main types of disaster that occur in mines, including coal spontaneous combustion (internal fire), external fire, and gas (coal dust) explosion. Great progress has been made in coal spontaneous combustion prediction, fire-area detection, fire-control technology and materials, and standardization system …
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The whole processes and technical route of coal seam fires' prevention and control in coal mining area are shown in Fig. 9. Download : Download high-res image (380KB) Download : Download ... and Open project by State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing University (No. 2011DA105287 …
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In this study, the most suitable explosion control method for coal mines was chosen using fuzzy MCDM approaches. As MCDM and fuzzy MCDM-based systems have the potential to solve real world problems with many, competing, and incommensurate criteria while also taking into account human decision-making, they are frequently used …
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