Moreover, this article offers various improvement programs for smoke evacuation system in subways system. Initially, we offer an idea to minimize the anti-smoke divisions and to rearrange vent positions to resolve the failure of station smoke evacuation mode. In the study of smoke evacuation process at tunnel track area, we find an upward slope will block smoke evacuation. This study also finds that start of fans operation will speed up the accumulation of smoke and endanger people's life during escape. The way to resolve is that we need to add fans at upward slope. This result is different from the report of one dimensional SES simulate analysis. To timely correct the safety evaluation result in SES report and to efficiently improve the failure of smoke evacuation system design are recommended by this article. Therefore, an increase of time for people to escape in fire hazard with less casualty.

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