煤矿瓦斯爆炸事故中矿车激励效应的数值模拟  

A numerical simulation of stimulating effect of tramcars during the methane explosion propagation

作　　者：徐景德[1,2] 张莉聪[1] 黎体发 杨庚宇[1] 

机构地区：[1]华北科技学院安全工程学院,北京101601 [2]北京理工大学宇航学院,北京100081 [3]国家安全生产监督管理总局信息研究院,北京100029

出　　处：《爆炸与冲击》2012年第1期47-50,共4页Explosion and Shock Waves

基　　金：国家重点基础研究发展计划(973计划)项目(2002CB412707)~~

摘　　要：基于矿井生产环境,构建了相应的物理模型、数学模型,进行了数值模拟。模拟过程中,考虑了化学反应,将爆炸热力学过程和基元反应耦合,采用TVD格式进行数值离散。结果揭示巷道中设置1～3辆矿车时,瓦斯爆炸冲击波及其火焰波的结构和参数变化特征。数值模拟与实验结果对比分析表明,单一矿车和多辆矿车在激励效应存在明显不同,矿车数量增加,激励效应更加显著。Tramcars are used as transport equipment, especially in the central area of a mine. As ob- stacles in the cloud of pre-mixed gas, they produce stimulating effect during the methane explosion ac- cidents in coal mining. Based on conditions of coal mining process, a set of models is built for the nu- merical simulation. The chemical reaction mechanism, thermodynamics of explosion and elementary reaction are taken into consideration in the simulation. The TVD scheme is used for numerical discret- ization. The result shows the changes of shock wave and fire flame because of the influence of 1 to 3 tramcars. By comparison with previous experimental results, the conclusion is that the stimulating effect will be enhanced with the increase of the number of tramcars. The result will be helpful for the gas explosion prevention, emergency response and rescue, and incident investigation in coal mines.

关 键 词：爆炸力学 激励效应 耦合 瓦斯爆炸 矿车 

分 类 号：O383.1[理学—流体力学]