瓦斯爆炸在分岔管道中的传播规律及分析  

The propagation rule of methane explosion in bifurcation duct

作　　者：林柏泉[1] 叶青[1] 翟成[1] 菅从光[1] 

机构地区：[1]中国矿业大学能源与安全工程学院,江苏徐州221008

出　　处：《煤炭学报》2008年第2期136-139,共4页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(50534090,50574093);国家重点基础研究发展计划(973)资助项目(2005cb221506)

摘　　要：为了探索瓦斯爆炸在分岔管道中的传播规律,通过实验测定了瓦斯爆炸在分岔管道中传播的爆炸波超压值和火焰传播速度,并对瓦斯爆炸在分岔管道中的传播进行了理论分析.研究结果表明,管道分岔对瓦斯爆炸的火焰和超压都有增强的作用,火焰和爆炸波对分岔处管壁的破坏特别大.因此在矿井巷道开拓设计时,应尽量避免巷道分岔,同时避免巷道内障碍物的堆积.在必须分岔时,应根据分岔巷道瓦斯爆炸传播规律来采取相应的预防措施,以阻止瓦斯爆炸的传播和降低强度,减少瓦斯爆炸带来的损失.To master the propagation rule of methane explosion in bifurcation duct, the explosion wave overpressure and flame velocity of methane explosion in bifurcation duct were measured by means of experiment, and the propagation of methane explosion in bifurcation duct was analyzed theoretically. It shows that the effect of bifurcation on the flame velocity and overpressure is obvious, and the destruction in bifurcation is serious. So during the mine exploitation and laneway design, the bifurcation laneway should be avoided and the obstruction should be eliminated as possible. When the bifurcation is unavoidable, the relevant preventive measures should be adopted to suppress the methane explosion propagation, depress the intensity and diminish the loss due to gas explosion, according to the propagation rules.

关 键 词：瓦斯爆炸 分岔管道 冲击波 火焰 

分 类 号：TD712.71[矿业工程—矿井通风与安全]