中智地下车库火灾烟气流动规律数值模拟分

随着我国城市化进程的快速发展，地下建筑得到了充分的开发和应用。但是，由于这些地下建筑物具有封闭性强，自然通风条件较差，人流密集度高等特点，一旦发生火灾极易造成群死群伤重特大恶性事故。运用火灾动力学、烟气控制理论和有限元方法，对淮南中智大型地下车库不同条件下火灾烟气流动规律进行了数值模拟研究。结果表明:建筑喷淋系统对火灾抑制效果明显，但对火灾烟气控制会产生较为不利影响，有时会造成疏散出口处能见度下降20%~30%，且在一些半封闭区域内形成烟气集聚，不易被排出，从而对火灾遇险人员安全疏散产生不利影响。

Numerical simulation analysis on smoke flow regularity of fire in Zhongzhi underground garage

With the rapid development of urbanization in our country, underground buildings have been fully developed and applied. However, due to the features of these buildings, which include strong closure property, poor natural ventilation conditions and high population density, once the fire happens, it is very easy to cause major and extraordinarily serious accident with many casualties. The smoke flow regularity of fire in Huainan Zhongzhi large underground garage under different conditions was studied by numerical simulation through using the fire dynamic theory, smoke controlling theory and finite element method. The results showed that the building spray system can effectively suppress fire, but it has a negative effect on smoke control, sometimes it will reduce the visibility in evacuation exit by 20%~30%, and the smoke often gather in some semi-closed area, being difficult to be exhausted, thus producing adverse effect on safety evaluation of people in danger of fire.