地铁站台火灾烟气蔓延数值模拟分析

采用FDS对地铁站站台层火灾进行数值模拟，分析其火灾情况下地铁站内的烟气蔓延、温度分布、能见度分布、CO浓度分布情况，研究地铁火灾时人员疏散的安全性。研究表明：火灾情况下，烟气温度、CO浓度的变化主要集中在火源区域附近。站台层其他区域的温度和CO浓度均得到很好的控制。但能见度下降较明显，不利于人员疏散。

Numerical Simulation on Smoke Spread of the Platform in Subway Station under Fire Condition

The fire on the platform of subway station was analyzed by numerical simulation method using the software FDS. The smoke spread, temperature and visibility distribution and carbon monoxide concentration under fire condition were studied to evaluate the safety of personnel evacuation. The results indicate that： the temperature of smoke and distribution of carbon monoxide eoncentration were focused on the area near the fire. The temperature and carbon monoxide concentration at other areas of the platform were controlled well while the visibility of the platform reduced obviously, which was not convenient for the personnel evacuation.