采煤工作面上隅角瓦斯爆炸传播研究  

Research on propagation of gas explosion in the upper corner of coal face

作　　者：张德乾 

机构地区：[1]国投煤炭有限公司河南分公司

出　　处：《中州煤炭》2016年第10期43-45,132,共4页Zhongzhou Coal

摘　　要：为研究采煤工作面上隅角瓦斯爆炸在采面联巷内的传播特征,采用U型并联管道系统模拟爆炸在实际巷道内的传播。结果表明,上隅角瓦斯爆炸冲击波在采煤工作面不规则巷道中传播时,爆炸冲击波和火焰陡然变化,出现爆轰;进、回风巷内冲击波进入上下山巷道出现叠加;冲击波经过进风巷与回风巷传播特征存在较大差异,冲击波在回风巷内属燃烧爆炸传播,而在进风巷内属一般空气区传播,上下山巷道及工作面属爆炸破坏较严重区域,应强化预防措施,减少瓦斯爆炸带来的损失。To study the propagation characteristics of gas explosion in the upper corner of coal face,U-shaped parallel pipeline system was used to simulate the explosion in the actual transmission in the roadway. The results show that,when gas explosion shock wave is transmitting in upper corner in the irregular mining face roadway,explosive blast and flame change suddenly and detonation happens. explosive blast of air roadway appears superimposed when they enter into up and down roadway. There is a big difference on propagation characteristics of explosive blast when it transmits the intake airflow roadway and return airway. Shock wave is burning explosion in the return airway,and in spread into the intake airflow roadway belongs to the general air area. The up and down roadways and working face belong to areas seriously damaged by explosion,this area should strengthen prevention measures to reduce the loss caused by gas explosion.

关 键 词：上隅角 瓦斯爆炸 并联巷道 爆炸超压 

分 类 号：TD712.7[矿业工程—矿井通风与安全]