特长铁路隧道内压缩空气泡沫灭火机理研究

摘要

分析压缩空气泡沫系统应用于铁路隧道消防保护的灭火机理、影响因素,对隧道内压缩空气泡沫灭火机理的独特性进行了单独分析,总结出关键工程应用参数.分别采用喷头和喷淋管对隧道模型内模拟车厢喷洒泡沫,进行冷喷试验,对比接收系数,验证释放方式对泡沫覆盖效果的影响.接收系数越大代表释放方式效果更好.%The extinguishing mechanism and influence factors of compressed air foam in railway tunnel were analyzed, especially the specificity of extinguishing mechanism of tunnel compressed air foam. The pivotal engineering parameters were summarized. The cold spray tests were carried out by nozzle and spray tube on simu?lated carriage in tunnel model. The receiving ratio was researched to verify the influence of release mode on coverage effect. The big?ger the receiving ratio, the better the coverage effect.