Experimental Study on Explosion Characteristics of Coal Dust in Coal Mines and Analysis of Influencing Factors
In order to further explore the main characteristics of coal mine dust explosions,a 20 L spherical explosion reactor was used as the basic equipment to build the main equipment for coal mine coal seam explosion characteristics experiments.Through a large number of experiments,the influence of particle size and gas concentration in different coal dust on explosion pressure and its changes was verified.The results show that when the particle size in coal dust is at a lower level,or when the ratio of gas to oxygen can fully react,the explosion pressure is relatively higher and the change is more rapid,especially when the explosion effect of gas mixed with coal dust is relatively more prominent.Preliminary exploration of corresponding preventive measures was conducted in order to provide certain reference for future coal mining and transportation processes.
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