Results 21 to 30 of about 27,132 (199)
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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Coal mine gas and coal dust explosion sound recognition method based on wavelet packet energy
Gong-kuang zidonghua, 2023 At present, it is difficult to meet the emergency rescue needs of gas and coal dust explosion accidents due to the rate of missing and false alarms in coal mine gas and coal dust explosion monitoring. In order to solve the above problems, a coal mine gas
YU Xingchen, WANG Yunquan
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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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Study on the Explosion Mechanism of Low-Concentration Gas and Coal Dust
FireIn coal mines, the mixture of coal dust and gas is more ignitable than gas alone, posing a high explosion risk to workers. Using the explosion tube, this study examines the explosion propagation characteristics and flame temperature of low-concentration ...
Li Liu +4 more
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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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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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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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Meitan xuebaoTo explore the propagation characteristics of gas explosion-induced coal dust detonations in enclosed pipelines, a custom-developed experimental system was employed for gas explosions involving accumulated coal dust.
Bingyou JIANG +6 more
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Analysis of combustion duration and residual gas in secondary explosion of coal dust
Gong-kuang zidonghua, 2018 Secondary explosion experiments of coal dust were carried out by use of 20 L spherical explosion device under the conditions of different coal dust concentration, particle size and ignition energy separately, and influence of coal dust concentration ...
LI Xiaoliang +4 more
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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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