煤矿瓦斯爆炸冲击波多相破坏效应研究  

Multiphase destructive effects of shock wave resulting from coal mine gas explosion

作　　者：朱传杰[1] 林柏泉[1] 江丙友[1] 刘谦[1] 洪溢都[1] 孙豫敏[1] 

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

出　　处：《中国矿业大学学报》2013年第5期718-724,730,共8页Journal of China University of Mining & Technology

基　　金：国家自然科学基金青年科学基金项目(51204174);中央高校基本科研业务费专项资金项目(2012QNB01);中国矿业大学科研人才基金项目(2011RC07);青年教师启航计划项目

摘　　要：建立了多相破坏的理论模型,提出了对于小试块的破坏特征分析采用碎块面积分布统计的方法来评估其破坏能力,开展了多相破坏验证实验.结果表明:随着爆炸破坏强度的增大,混凝土碎块的数量增多,特别是低于2cm2的碎块数量明显增多,而面积较大的碎块数量减少.对单一气相和气固两相破坏特征进行了实验对比分析,发现在爆炸冲击波传播方向和侧面,气固两相破坏都比单相破坏大,表现为碎块数量增多.A multiphase destructive theoretical model was established. The multiphase destruc- tive effects should be evaluated by ranking the area distribution of fractured block fragments. Experiments on multiphase destructive effects were carried out. The number of concrete frag- ments increased with the increase of explosion violence, particularly for elements with an area less than 2 cmz. In addition, the number of blocks with larger area decreased. A comparison of destructive effects between gas explosion and Multiphase Destructive Effects has been made. It was found that the damage had been increased both in the direction of gas explosion shock wave propagation and on the side wall. This was demonstrated by the increased number of frag- ments. The coupled destructive effects induced by shock wave and high-speed solid particles can enhance the explosion violence.

关 键 词：瓦斯爆炸 超压 多相破坏 高速粒子 

分 类 号：TD712.7[矿业工程—矿井通风与安全]