交错障碍物对瓦斯爆炸影响的实验研究  

Experimental study of the influence of staggered obstacles on gas explosion

作　　者：余明高[1] 纪文涛[1] 温小萍[2] 李果[2] 

机构地区：[1]河南理工大学安全科学与工程学院,河南焦作454003 [2]河南理工大学机械与动力工程学院,河南焦作454003

出　　处：《中国矿业大学学报》2013年第3期349-354,共6页Journal of China University of Mining & Technology

基　　金：国家自然科学基金项目(50974055;50906023);河南省基础与前沿技术研究计划项目(082300463205)

摘　　要：为了研究交错障碍物对瓦斯爆炸火焰形状、火焰速度及爆炸压力的影响,设计并搭建了150mm×150mm×500mm半封闭透明腔体的瓦斯爆炸实验台,采用化学当量比浓度的甲烷-空气预混气体,并与平行障碍物工况进行了比较.实验结果表明:与平行障碍物相比,交错障碍物明显增强了火焰形变,提高了火焰速度和爆炸压力,其中火焰速度和爆炸压力的提升率最高分别达到78.0%和198%.因此,在实际巷道中,应尽量避免障碍物的交错放置.A semi-confined transparent chamber is designed and constructed with the size of 150 mm×150 mm×500 mm for experimental study of gas explosion.With stoichiometric methane-air premixed mixture,the effects of staggered obstacles on flame shape,speed and pressure in gas explosion are investigated and compared to parallel obstacles.The experimental results show that the flame shape is distorted significantly by staggered obstacles,and the flame propagation speed and explosion pressure are higher.Among them the increase of flame propagation speed and explosion pressure can reach 78.0% and 198% respectively.Therefore,the staggered obstacles should be avoided in practical roadway.

关 键 词：交错障碍物 瓦斯爆炸 火焰形状 爆炸压力 火焰速度 

分 类 号：TD712.7[矿业工程—矿井通风与安全]