In order to study the influence of obstacle on the gas explosion pressure,the horizontal ducted testing system for gas explosion was used.Experimental research of gas explosion pressure was carried out in the horizontal explosion tube with obstacles.Influence rule of shape,blocking ratio and distance between obstacle was researched.The results show that the maximum pressure for gas explosion appeared at the strip-type obstacle.The secondary was the bow-type obstacle and ring-type obstacle has the least effect on gas explosion pressure.The gas explosion pressure increased with the addition of blocking-ratio and increased slowly with the spacing of obstacles.Compared with the shape and blocking-ratio of obstacle,the obstacle spacing has the least influence on the gas explosion pressure.The gas explosion pressure first decreased and then increased with the addition of tube slenderness ratio under different obstacles and the maximum increasing located in the slenderness ratio of 64.%为系统研究障碍物对瓦斯爆炸压力的影响规律,利用水平管道式气体爆炸试验系统,在水平爆炸管中放置障碍物条件下对瓦斯爆炸压力进行试验研究.通过改变内置障碍物的形状、阻塞率及间距,研究这些参数的改变对瓦斯爆炸压力的影响.结果表明:条形障碍物作用下瓦斯的爆炸压力最大,其次为弓形,圆环型障碍物对瓦斯爆炸压力的影响最小;随着障碍物阻塞率的增大,瓦斯爆炸压力依次递增;瓦斯爆炸压力随障碍物间距的增大缓慢递增,与障碍物形状、阻塞率相比,障碍物间距对瓦斯爆炸压力的影响最小.不同障碍物下瓦斯爆炸压力均随着管道长径比的增加先减小后增大,在长径比为64处爆炸压力增长幅度最大.
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