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Study on the Explosion Mechanism of Low-Concentration Gas and Coal Dust [PDF]

open access: goldFire
In 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   +2 more sources

Effect of coal dust parameters on gas-coal dust explosions in pipe networks

open access: yesGeomatics, Natural Hazards & Risk, 2022
To study the effects of coal dust particle size and mass of coal dust on gas-coal dust hybrid explosions, we conducted sedimentary gas-coal dust explosion experiments using a pipe network system that included multiple components and individual ...
Jia Jinzhang, Wang Fengxiao, Li Jie
doaj   +2 more sources

Gas and coal dust explosion perception alarm and explosion source judgment method based on video image

open access: greenGong-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
doaj   +2 more sources

Numerical simulation of flame propagation characteristics of coal-dust explosion in horizontal pipeline space

open access: greenGong-kuang zidonghua, 2019
In order to research flame propagation characteristics of coal-dust explosion in horizontal pipeline space, based on coal-dust explosion experimental equipment with horizontal glass pipeline, mathematical models of flame propagation characteristics of ...
LIU Tianqi
doaj   +2 more sources

Research on secondary explosion characteristic of coal dust

open access: yesGong-kuang zidonghua, 2018
Influence of concentration, particle size and ignition energy of coal dust on secondary explosion characteristic of coal dust were studied by use of 20 L spherical explosion device, and the secondary explosion characteristic of coal dust was compared ...
LIU Haoxiong   +5 more
doaj   +2 more sources

Mitigating Coal Dust Explosions in Modern Underground Coal Mines

open access: greenSSRN Electronic Journal, 2009
The National Institute for Occupational Safety and Health (NIOSH), as part of its continuing research program for evaluating coal dust explosion hazards, has investigated several areas in which current practices may need to be updated in order to adequately protect mines against coal dust propagated explosions.
Marcia L. Harris   +3 more
openaire   +2 more sources

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