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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。
With the rapid development of urbanization in our country, underground buildings have been fully developed and applied. However, due to their closeness, poor natural ventilation and high concentration of people, these underground structures are extremely vulnerable to death and mass death in the event of a fire. Using fire dynamics, flue gas control theory and finite element method, the numerical simulation of fire flue gas flow in Huainan Zhongzhi large underground garage under different conditions was carried out. The results show that the sprinkler system has obvious fire suppression effect, but it has a more adverse effect on fire flue gas control, sometimes it can reduce the visibility of evacuation exit by 20% -30% and form flue gas concentration in some semi-enclosed areas , Is not easy to be discharged, thus adversely affecting the safe evacuation of fire victims.