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《Journal of Henan Polytechnic University(Natural Science)》 2012-01
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Research on theoretical spreading law of shockwave of coal dust explosion in general air area in laneway corner

CHENG Lei,JIA Zhi-wei,JING Guo-xun,DUAN Zhen-wei(School of Safety Science & Engineering,Henan Polytechnic University,Jiaozuo 454003,Henan,China)  
The spreading theoretical law of shockwave of coal dust explosion is the pvemise and poundation to study the mechanism injury and damage.This paper analyzed the theoretical spreading law in the laneway corner based on the theory of flow dynamics and explosive dynamics.According to the spreading law of oblique shock wave,this paper is to set up the mathematical model of the shockwave spreading of coal dust explosion in general air area in laneway corner and deduce the corresponding equation.By using the suddenly jump parameters of wave front to represent the shockwave,the paper derived the simplified equation of spreading law in the laneway corner.Research indicates that the attenuation coefficient of shockwave of coal dust explosion increase with the initial shockwave pressure and angle of the laneway corner rising.By contrastive analysis of the spreading law and experimental results,the results of theoretical derivation were ueripied.
【Fund】: 国家自然科学基金资助项目(50674041);; 教育部长江学者和创新团队计划项目(IRT0618)
【CateGory Index】: TD714.5
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