巷道火灾中烟气流动规律研究

A Study on Smoke Spread Law in Tunnel Fire

矿井火灾烟气蔓延,威胁着井下工作人员的生命安全。文章利用FDS软件模拟不同风速和不同火源位置下烟气蔓延特性,应用烟气温度、烟气浓度等参数,得到不同工况下烟气流动规律,结果表明:不同火源位置下,烟气流动差异很大;通风风速越大,火源上风侧烟气浓度越低,下风侧烟气聚集越多。

Mine fire smoke spread, threatening the lives and safety of underground workers. In this paper, FDS software is used to simulate the features of smoke spread in different conditions of wind speeds and fire location. Applications parameters of smoke temperature and smoke concentration, we obtained smoke spread law under different conditions. The results show that： under different fire location, smoke flow varies greatly; the greater the ventilation velocity, the lower the windward side of the fire source gas concentration,the more downwind side of the flue gas aggregation.