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The Fire Smoke Control Numerical Simulation of Deeply Buried Long Tunnel under the Way of Setting Intermediate Air Shaft
Author(s): 
Pages: 126-129
Year: Issue:  2
Journal: Refrigeration & Air Conditioning

Keyword:  intermediate air shaftpush-pull ventilationtunnel fireCFD;
Abstract: 采用计算流体力学(CFD)方法,对设置中间风井方式下的隧道火灾通风排烟进行数值模拟研究.选取火灾发生在斜井B与竖井C之间,着重研究不同风井风机送排风风量对火灾防排烟的影响.隧道内列车发生火灾,开启事故列车两端风井内风机进行推挽式通风,可以满足人员逃生路径上无烟要求.事故列车后方有阻塞列车时,由于列车的阻塞作用,对斜井B内的隧道风机在往事故段隧道组织气流更加有利.对于深埋长隧道而言,设置中间竖井难度大,成本高,利用隧道临时施工竖井或斜井进行后期改造,即可满足通风与排烟的要求,又节省大部分土建投资.
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