瓦斯爆炸衰减规律和破坏效应

曲志明1,吴会阁2,郝刚立2,高洪俊1,王晓丽3

(1.河北工程学院土木工程学院,河北邯郸056038;2.石家庄经济学院工程学院,河北石家庄050031;

3.邯郸市科学技术协会推广部,河北邯郸056002)

摘　要:瓦斯爆炸的传播和衰减规律的研究是基于燃烧学、爆炸力学和应用数学等学科从爆炸所在环境出发的应用研究。瓦斯爆炸对构筑物的破坏效应是通过对冲击波阵面上超压、冲击波的作用时间及构筑物所处的位置、构筑物的形状等因素的研究进行的,而瓦斯爆炸的破坏机理和对通风系统破坏效应方面的研究不但可以加深理论而且还可以应用于实践。矿井瓦斯爆炸传播规律、衰减规律和破坏效应的研究成果,对事故防治和调查可以提供重要的技术支撑。

关键词:瓦斯爆炸;衰减规律;破坏效应;掘进巷道;冲击波

中图分类号:TD712+.7　　　文献标识码:A　　　文章编号:1003-496X(2006)04-0005-05

Attenuation and Damage Effect of Gas ExplosionQU Zhi-ming1, WU Hui-ge2,HAO Gang-li2,GAO Hong-jun1,WANG Xiao-li3(1. School of Civil Engineering, Hebei College of Engineering, Handan056038, China;2.School ofEngineering, Shijiazhuang University of Economics,Shijiazhuang050031, China;. Extension Department, Handan Association of Science and Technology, Handan056002, China)bstract:Based on the science of combustion, the explosion dynamics and the applied mathematics, the study of gas explosionspreading and attenuation can be made from the reaction angle between the explosion and the environment. The damage effects of gasexplosion on the structures in excavation roadway is to study some factors such as the overpressure in the shock wave front, the actiontime of shock time, the position of structures, the shape and so on. Through the discussion above, the study about the damage mech-anism and damage effects on ventilation system can be put into theory research and practice. The research findings on the spreading,attenuation and the damage effects during gas explosion will technically support the accidents’prevention and cure and investigation.Key words:gas explosion;attenuation;damage effect;excavation roadway;shock wave

0　引　言

我国煤矿瓦斯大,瓦斯涌出强度高,危险性较大。大中型煤矿中,高瓦斯矿井占20.34%;小型煤矿中,高瓦斯矿井占15%左右。随着开采深度的增加,机械化程度的提高,开采强度的增大,瓦斯涌出量就会进一步增大;那么,瓦斯灾害的治理越来越成为煤矿灾害防治的重点。因此,在

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