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介绍了地铁站内烟气流动和控制的试验和数值研究。在三个真正地铁站内利用甲醇油池火作为燃料进行了试验,用所获得数据来验证地铁站火灾数值模型,并进一步检验其烟控系统的性能。在站内使用了制量烟气流动模型,再现了最简单条件下每个站点的试验结果,然后把结果跟其他试验条件下的试验结果进行了比较。最后,用模型预测更复杂火灾的烟气流动情况。另外,还讨论了地铁系统的有效设计和火灾安全设施的正常运作情况。通过限制内饰面材料的燃烧性能或者安装自动喷淋系统都可以有效控制热释放速率,且在站点两端开设逃生路线、站台和地铁隧道直接卷帘的正常启动等可有效保证安全疏散。
The experiment and numerical study of smoke flow and control in subway station are introduced. Methanol pool fire was used as fuel in three truly metro stations and the data obtained were used to validate numerical models of subway station fires and to further verify the performance of their smoke control systems. A model of flue gas flow was used in the station to reproduce the test results for each site in the simplest conditions and then compare the results with those obtained under other test conditions. Finally, a model is used to predict the smoke flow in a more complex fire. In addition, the effective design of the subway system and the normal operation of fire safety facilities were also discussed. By limiting the combustion performance of interior materials or installing automatic sprinkler system, the rate of heat release can be effectively controlled. Escape routes are provided at both ends of the site. The normal start of the direct shutter of the subway station and subway tunnel can effectively ensure safe evacuation.