Results 11 to 20 of about 2,483,836 (160)
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
doaj +2 more sources
Sound identification method of coal mine gas and coal dust explosion based on wavelet scattering transform [PDF]
Meitan kexue jishuTo solve the problems of high false alarm rate and leakage rate of coal mine gas and coal dust explosion disaster alarm methods, and improve the accuracy of coal mine gas and coal dust explosion perception, sound identification method of coal mine gas ...
Xingchen YU, Xiaowei LI
doaj +2 more sources
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
doaj +2 more sources
Energies, 2023 Coal dust endangers the health and safety of workers in underground coal mines. Therefore, developing coal dust suppressants with dust prevention and explosion-proof properties is critical.
Jianguo Liu +9 more
doaj +2 more sources
Material Evidence Analysis upon Accident Investigation of Gas and Coal Dust Explosion [PDF]
Procedia Engineering, 2012 The gas and coal dust explosion accident is one of the most frequent and serious accidents in China coal mine. Based on explosion characteristics parameters after explosion and the change laws of gas and solid components, the comprehensive criteria of ...
Runzhi Li, Zichao Huang, Rongjun Si
exaly +2 more sources
Sound Identification Method for Gas and Coal Dust Explosions Based on MLP
Entropy, 2023 To solve the problems of backward gas and coal dust explosion alarm technology and single monitoring means in coal mines, and to improve the accuracy of gas and coal dust explosion identification in coal mines, a sound identification method for gas and ...
Xingchen Yu, Xiaowei Li
doaj +2 more sources
Propagation characteristics of flame and shock wave in gas–coal dust coupled explosions in a variable-cross-section pipeline [PDF]
Scientific ReportsTo reveal the evolution characteristics of flame and shock waves in gas-coal dust coupled explosions under conditions of sudden cross-sectional changes, this paper designs and builds a transparent plexiglass pipeline test system with three different ...
Shaoshuai Guo +3 more
doaj +2 more sources
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
doaj +2 more sources
Gong-kuang zidonghua, 2023 The characteristics of coal mine gas and coal dust explosion are analyzed. The gas concentration changes suddenly. The ambient temperature rises rapidly. The air pressure rises suddenly. It produces fireballs and smoke.
SUN Jiping +3 more
doaj +1 more source
Frontiers in Earth Science, 2023 The continuous development of coal science and technology has made gas and coal dust explosion disasters an important factor that restricts efficient and intelligent coal mining, which seriously threatens the safe production process of coal mines.
Yihui Niu +6 more
doaj +1 more source