掘进巷道瓦斯爆炸衰减规律及特征参数分析  

Analysis of attenuation law and characteristic parameters in excavation roadway during gas explosion

作　　者：曲志明[1] 周心权[2] 和瑞生[1] 李毅杰[1] 汪洋[1] 

机构地区：[1]河北工程大学土木工程学院,河北邯郸056038 [2]中国矿业大学(北京)资源与安全工程学院,北京100083

出　　处：《煤炭学报》2006年第3期324-328,共5页Journal of China Coal Society

基　　金：国家自然科学基金重点资助项目(50474031)

摘　　要：运用爆轰和爆炸动力学理论的研究方法,建立了瓦斯爆炸的物理模型和冲击波关系式,目的在于研究煤矿掘进巷道瓦斯爆炸时期爆炸冲击波、爆轰波的衰减规律及特征参数的特性.通过对冲击波、爆轰波衰减渐近规律的分析,推导出柱面、球面强爆轰波的衰减有限距离的函数表达式.实验和计算结果的对比分析得出:柱面、球面强爆轰波在有限距离内可以衰减为C-J爆轰波,同时推导出强爆轰波衰减为C-J爆轰波的有限距离公式.Combining with the theory of the explosion and detonation dynamics, the physical model and the basic shock wave relations were set up. The attenuation of shock wave and detonation and the characteristic parameters were studied in the mine excavation roadway during gas explosion. The finite attenuation distance of the cylindrical and spherical detonation was deduced through analyzing the asymptotic attenuation. Comparing the analysis between experiment and computation, it is concluded that the cylindrical and spherical detonation can attenuate to C -J detonation and the formula of attenuation in finite distance is deduced.

关 键 词：掘进巷道 瓦斯爆炸 衰减规律 有限距离 波强度方程 

分 类 号：TD712.7[矿业工程—矿井通风与安全]