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首页> 外文期刊>Tunnelling and underground space technology >Numerical study on the optimization of smoke ventilation mode at the conjunction area between tunnel track and platform in emergency of a train fire at subway station
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Numerical study on the optimization of smoke ventilation mode at the conjunction area between tunnel track and platform in emergency of a train fire at subway station

机译：地铁车站发生火灾时隧道轨道与站台结合处排烟通风方式优化的数值研究

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摘要

To cope with fires in a subway station, ventilation systems are usually installed, which includes an air supply system and a smoke exhaust system. In case of a train fire, the operation of these ventilation systems needs to be studied in order to get optimal control of smoke propagation and provide better environmental conditions for personnel evacuation. In this paper, CFD simulations are carried out by Fire Dynamics Simulator (FDS) to study the effectiveness of different ventilation modes in case of a train fire in a subway station. The temperature and visibility contours are computed as to compare the performance of various ventilation modes for subway stations with full-seal Platform Screen Door (PSD) or half-height safety door. Results show that appropriate activation of the air supply system can improve the efficiency of the ventilation system in smoke control, and vice versa. It is better to activate the lobby air supply system and meanwhile close the platform air supply system. As for the exhaust system, it is necessary to activate the platform exhaust system and the Over Track Exhaust (OTE) system, and it is better to deactivate the Under Platform Exhaust (UPE) system. The optimization strategy of the ventilation mode for subway stations with full-seal PSD is similar to that for subway stations with half-height safety door. With the help of the additional smoke barrier, smoke propagation in a subway station can be well controlled. The results in the paper may serve as a useful reference for the smoke control design in case of subway train fires.
机译：为了应对地铁站的火灾，通常会安装通风系统，其中包括送风系统和排烟系统。在火车起火的情况下，需要对这些通风系统的运行进行研究，以便对烟雾传播进行最佳控制，并为人员疏散提供更好的环境条件。本文通过消防动力学仿真器（FDS）进行了CFD仿真，以研究地铁车站发生火车起火时不同通风方式的有效性。计算温度和能见度等值线以比较具有全密封平台屏蔽门（PSD）或半高安全门的地铁站的各种通风模式的性能。结果表明，适当激活空气供应系统可以提高通风系统在烟雾控制中的效率，反之亦然。最好激活大厅供气系统，同时关闭平台供气系统。对于排气系统，有必要激活平台排气系统和轨道上方排气（OTE）系统，最好停用平台下方排气（UPE）系统。具有全密封PSD的地铁站的通风方式的优化策略与具有半高安全门的地铁站的通风方式的优化策略相似。借助附加的烟雾屏障，可以很好地控制地铁站内的烟雾传播。本文结果可为地铁列车着火时烟气控制设计提供有用的参考。

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  • 来源
    《Tunnelling and underground space technology》 |2014年第2期|151-159|共9页
  • 作者

    Na Meng; Longhua Hu; Long Wu; Lizhong Yang; Shi Zhu; Longfei Chen; Wei Tang;

  • 作者单位

    State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui 230026, China;

    State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui 230026, China;

    State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui 230026, China;

    State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui 230026, China;

    State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui 230026, China;

    State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui 230026, China;

    State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui 230026, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Train fire; Subway station; Optimization; Ventilation mode; FDS;

    机译：火车起火;地铁站;优化;通风方式FDS;

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