Results 1 to 10 of about 9,419 (241)
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
doaj +4 more sources
Development of a Coal Dust Concentration Sensor Based on the Electrostatic Induction Method. [PDF]
ACS Omega, 2023 In order to solve the problems of easy blockage and difficult maintenance of the current coal dust concentration sensor, a coal dust concentration sensor based on the electrostatic induction method was designed. Based on the analysis of the principle of electrostatic induction dust concentration detection, an electrostatic induction dust concentration ...
Chen J +6 more
europepmc +3 more sources
Numerical simulation study of the effect of coal dust on gas explosion overpressure [PDF]
Scientific ReportsA numerical simulation study was conducted using Ansys Fluent 2023 R1 simulation software to investigate the influence of coal dust on the overpressure of gas explosion. The results demonstrated that the reliability of the selected mathematical model was
Yingxiang Fang +3 more
doaj +2 more sources
International Journal of Mining Science and Technology, 2022 High humidity and high dust concentration in deep coal mines may severely challenge the performance of respirators worn by coal miners. This paper aims at quantitatively evaluating the respirators used in deep coal mines and providing scientific guidance for the respiratory protection of miners.
Jintuo Zhu, Xinjian He
exaly +3 more sources
Gong-kuang zidonghua, 2018 In order to improve quality of underground wireless communication and ensure effective communication, influence of underground coal dust concentration and humidity on electromagnetic wave transmission was researched.
ZHAO Shiping, SUN Xiuling, KAN Xiaoting
doaj +2 more sources
Field Measurement of Dust Concentration on Open-pit Coal Mine Truck Transportation Roads and Numerical Simulation of Dust Patterns [PDF]
E3S Web of ConferencesDust generated by open-pit coal truck transportation is one of the main sources of pollution, adversely affecting road visibility and the surrounding air quality during transportation operations. To investigate the distribution patterns of transport dust
Liu Cheng, Zou Chenglong, Li Yihe
doaj +2 more sources
Research on the influence of coal mine dust concentration on UWB ranging precision
Gong-kuang zidonghua, 2021 The environment of the fully mechanized working face in coal mines is harsh and the dust concentration is high. When ultra wide band (UWB) is used for positioning, it is easy to be interfered by dust.
DING Zhen1, ZHANG Yuchen2
doaj +2 more sources
Characterization and Concentration Prediction of Dust Pollution in Open-Pit Coal Mines
AtmosphereDust pollution is a major problem formed caused by opencast coal mining, and its prevention is a key prerequisite for the realization of green and climate-friendly mining in open-pit coal mines.
Guilin Wang +4 more
doaj +2 more sources
Explosion Characteristics and variation of oxidized coal dust
Meikuang Anquan, 2023 Oxidized coal is a coal body that has undergone the process of warming up and cooling down, and has been widely used in mine fire area start-up, stratified mining, and re-mining of residual coal, etc.
HE Jie, CHENG Kai, ZHANG Jin
doaj +1 more source
Fire, 2023 This research aimed to the characteristics and influence factor of methane and coal dust gas/solid two-phase mixture explosions by experiment. Through comparative analysis of flame propagation characteristics, pressure, flame temperature and products ...
Yue Wang +3 more
doaj +1 more source