受限空间内爆炸波的波形演化特征分析  

Analysis on Evolution Characteristics of Explosion Waveform in a Confined Space

作　　者：孙豫敏[1,2] 林柏泉[1,2] 朱传杰[1,2] 刘谦[1,2] 洪溢都[1,2] 

机构地区：[1]中国矿业大学安全工程学院,江苏徐州221116 [2]煤炭资源与安全开采国家重点实验室,江苏徐州221008

出　　处：《矿业安全与环保》2013年第5期1-4,共4页Mining Safety & Environmental Protection

基　　金：国家重点基础研究发展计划(973计划)项目(2011CB201205);江苏省普通高校研究生科研创新计划项目(CXZZ12_0960);中央高校基本科研业务费专项资金项目(2012DXS02);国家自然科学基金青年科学基金项目(51204174)

摘　　要：为了分析研究瓦斯爆炸波在巷道内传播过程中的演化特征,运用AutoReaGas软件模拟了爆炸波沿开口平直巷道的传播演变规律。研究结果表明:爆炸波从波形上看大致分为前驱冲击波、热压缩波及稀疏波;在爆炸初期爆炸波以接近声速的速度稳定传播;爆炸超压峰值整体呈现出先减小后增大的趋势。根据分析结果,在超压较大的区域应加强相应的预防措施,以减少瓦斯爆炸带来的损失。In this paper, analysis was made on the evolution characteristics of gas explosion wave in its propagation process in the roadway and simulation was carried out with AutoReaGas software on the evolution law of the explosion wave when it propagated along an open straight roadway. The research results showed that the explosion wave can be roughly divided into the forerunner shock wave, thermally compressive wave and sparse wave in view from the waveform ; in the early stage of explosion, the explosion wave steadily propagated at a speed close to the sound speed;and the overpressure peak of explosion tended to decrease first and then increase. The analysis results indicated that some relevant preventive measures should be taken in the region with larger overpressure so as to reduce the losses caused by gas explosion.

关 键 词：瓦斯爆炸 冲击波 超压峰值 

分 类 号：TD712[矿业工程—矿井通风与安全]