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利用全尺寸热烟测试(Hot SmokeTest)的方法,在一个四节编组、安全门系统制式下的地下二层地铁车站,开展了防灾系统安全性的火灾热烟测试实验,检测了地铁防灾系统的联动效果、事故模式切换状况和综合安全性能,实验得到了闭式全高安全门系统下的烟气扩散特点、楼扶梯开口向下流速、有效疏散时间,分析了排烟量的非对称性设计导致的烟气非对称流动特点。实验数据可为国内类似的采用四节编组(80m长)的站台、闭式系统设计的地铁线路提供参考。
Using the method of full-scale hot smoke test, a fire smoke testing experiment of disaster prevention system safety was carried out in a two-story underground railway station under the four-grouping and safety gate system. The subway disaster prevention system The results show that the asymmetric design of the smoke evacuation volume leads to the characteristic of smoke diffusion, the downward flow velocity of the escalator and the effective evacuation time. Of the smoke asymmetric flow characteristics. The experimental data can provide a reference for the similar metro line designed by four-station (80m long) platform and closed system in China.