某超大型地下火车站列车火灾烟气控制模式研究

摘要

本文利用FD S软件模拟了某超大型地下火车站短站台发生列车火灾时，采用“轨顶及站台层排烟，站厅层送风”烟气控制模式下站台层的防排烟效果，通过对站台层发生列车火灾时烟气的蔓延过程、能见度、温度场及CO 浓度等指标进行分析，结果表明该烟气控制模式对控制列车火灾是行之有效的。%This paper uses the FDS softw are to sim ulate the effect of fum e-prevention & extraction for the situation of trains on fire in a large-scale underground train station,w hich adopts the “extracting smoke from the track leveland the platform level, and supplying fresh air through station hall”smoke control m odel. According to sim ulation results of smoke spread process,visibility,tem perature field and CO concentration on the platform ,itis believed thatthis kind of fum e-prevention & extraction m odelis effective to fire controlin underground train station.