Results 21 to 30 of about 1,050 (181)
Research Progress of Explosion Suppression and Isolation Technology of Gas and Coal Dust
Meikuang Anquan, 2020 In this paper, the research progress and development trend of gas and coal dust explosion suppression and isolation technology in China are reviewed and discussed from the aspects of basic research, passive explosion suppression and isolation technology,
SI Rongjun, WANG Lei, JIA Quansheng
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Energies, 2019 Coal and oil shale are often mined and utilized together, and mixed dust is easily formed in these processes. In order to ensure safe production in these processes, the explosion characteristics of mixed dust were studied. Using a Godbert-Greenwold (G-G)
Junfeng Wang +5 more
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Pressure and Flame Propagation Characteristics of Suspended Coal Dust Explosions Induced by Gas Explosions. [PDF]
ACS OmegaIn order to explore the pressure and flame propagation characteristics of gas-coal dust composite explosions, a semiclosed pipeline explosion test platform was built. The shock wave overpressure and explosion flame propagation law of different concentrations of suspended coal dust participating in gas explosions were studied in depth through ...
Xun Jing G, Sun Y, Shuai Guo S.
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Coal mine safety production management countermeasures of Jinglaoyuan Coal Mine of Tiemei Group
Meikuang Anquan, 2021 Aiming at the dangerous and harmful factors existing in the production process of Jinglaoyuan Coal Mine of Tiemei Group, this paper makes a comprehensive analysis through field investigation, combines with the geological conditions, development layout ...
CHEN Lijie, SUN Jiahe, ZHAO Qian
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Recognition method of coal mine gas and coal dust explosion based on sound spectrogram and SVM
Meitan kexue jishu, 2023 In order to improve the detection accuracy of coal mine gas and coal dust explosion, recognition method of coal mine gas and coal dust explosion based on the sound spectrogram and SVM was proposed: installing mining pickups in key monitoring areas of ...
SUN Jiping, YU Xingchen, WANG Yunquan
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Gong-kuang zidonghua, 2020 Characteristics of coal mine gas and coal dust explosion are analyzed: Concentration of O2 in air decreases rapidly, while concentrations of CO2, CO and other toxic and harmful gases increase rapidly; Ambient temperature rises rapidly, and air pressure ...
SUN Jiping
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Study on the perception and alarm method of coal mine rock burst and coal and gas outburst
Gong-kuang zidonghua, 2022 The paper puts forward a perception and alarm method of rock burst and coal and gas outburst based on temperature. The infrared thermal imager is used to monitor the temperature of objects, and the methane sensor is used to monitor the concentration of ...
SUN Jiping, CHENG Jijie
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Gong-kuang zidonghua, 2020 Video image characteristics of gas and coal dust explosion are analyzed: Explosive fireball is usually red with high brightness, high temperature and strong radiation of infrared and ultraviolet rays, and area of the fireballs expands rapidly; Area ...
SUN Jiping, FAN Weiqiang
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Study of Influence of Combustible Gas on Explosion Parameters of Black Coal Dust
Chemical Engineering Transactions, 2012 The article focuses on the matters of explosion parameters of coal dusts and the effect of the addition of small amount of combustible gas methane on them.
J. Serafín +4 more
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Variation Law of Hybrid Explosion Characteristic Parameters of Gas and Coal Dust Coupled with Multiple Factors. [PDF]
ACS OmegaThis study aims at extensively investigating the explosion characteristics of a hybrid mixture of gas and coal dust. Accordingly, the standard 20 L spherical explosion system was applied to measure parameters such as the lower explosion limit, maximum explosion pressure, and index of the hybrid mixture of different concentrations of gas and coal dust ...
Peng L, Ji W, Zhang Y, Tian R.
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