伊朗德黑兰地铁1号线北延线典型区间事故工况模拟

摘要

The tunnel of the northern extension line of Iran Tehran metro line 1 has a special structure, which contains two lines in one tunnel and with the maximum gradient of 50‰. Therefore, it is important to predict the ventilation effects in emergency conditions,such as fire and block. In this paper,with the aim to confirm the equipment operation modes under emergency conditions,the software of Stess was used to simulate the typical tunnel ventilation strategies. In addition, whether the existing equipment could meet the critical air velocity that required by related code was discussed.%伊朗德黑兰地铁1号线北延线区间线路的形式为单洞双线,且坡度最大为50‰,事故工况下的通风组织尤为重要.本文利用Stess模拟软件,对典型区间事故工况下的通风模式进行了模拟计算,寻求事故工况下的通风方案和设备运行模式,以确保事故通风设计满足地铁规范对事故区间断面风速的要求.