狭长通道中瓦斯爆炸传播特征及规律的实验研究  

Experimental Study on Characteristics and Laws of Gas Explosion Propagation in Tube

作　　者：杜扬[1] 梁建军[1] 王冬[1] 周建忠[1] 欧益宏[1] 

机构地区：[1]后勤工程学院军事供油工程系,重庆400016

出　　处：《煤矿安全》2010年第5期1-4,共4页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(50676106);重庆市自然科学基金重点资助项目(2007BA6018;2009BA6019)

摘　　要：基于瓦斯爆炸在瓦斯防治中的重要性,通过实验对狭长通道中瓦斯爆炸波的传播特征及规律进行了研究。研究表明,瓦斯爆炸传播过程中,通道内的一定强度的湍流流场对燃烧反应速度有抑制作用;湍流流场、压力波和火焰波之间的相互影响使爆炸过程分为3个阶段:缓慢燃烧段、湍流发展段和激化振荡段,其中,激化振荡段的高频高压振荡波带来的破坏是最大的。Based on the importance of gas explosion in gas control,an experimental about the characteristics and laws of gas explosion expansion in tube was studied. According to the experimental result,two conclusion were made. One was a certain intensity of turbulent flow field could choke back the gas combustion in tube. Another was the process of gas explosion expansion was divided into three stages： the Slow-burning,the Developing Turbulence and the Acute Oscillation,and the mechanism of interaction of turbulent flow, pressure wave and flame was different in them,and the destruction of high-frequency high - voltage shock wave of the Acute Oscillation was greatest.

关 键 词：瓦斯 爆炸 压力波 火焰波 湍流 燃烧 

分 类 号：TD712.71[矿业工程—矿井通风与安全]