主管:中华人民共和国应急管理部
主办:应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU

消防科学与技术 ›› 2021, Vol. 40 ›› Issue (2): 213-216.

• • 上一篇    下一篇

火源与排烟竖井的相对位置对重点排烟效果的影响研究

谢飞1,董启伟1,常默宁1,李俊梅2   

  1. 1. 北京市市政工程设计研究总院有限公司,北京100082;2. 北京工业大学建筑工程学院,北京100124
  • 出版日期:2021-02-15 发布日期:2021-02-15
  • 通讯作者: 董启伟(1993-),山东德州人,北京市市政工程设计研究总院有限公司助理工程师,硕士,主要从事隧道通风与消防研究,北京市海淀区西直门北大街32 号3号楼市政总院大厦C 座,100082。
  • 作者简介:谢飞(1984-),北京人,北京市市政工程设计研究总院有限公司高级工程师,硕士,主要从事隧道通风与消防研究,北京市海淀区西直门北大街32 号3 号楼市政总院大厦C 座,100082。

Study on the influence of the relative position of fire source and smoke exhaust shaft on point smoke exhaust effect

XIE Fei1, DONG Qi-wei1, CHANG Mo-ning1, LI Jun-mei2   

  1. 1. Beijing General Municipal Engineering Design & Research Institute, Beijing 100082, China; 2. College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China
  • Online:2021-02-15 Published:2021-02-15

摘要: 借助理论分析及数值模拟相结合的手段对某盾构城市地下道路火灾工况下,火源与排烟竖井的相对位置对重点排烟效果的影响进行模拟研究。研究结果表明单向排烟模式在一定的排烟量条件下,火源位置距离排烟竖井越近,排烟效果越好。当火源位于两个排烟竖井之间且偏向其中某一个竖井位置时,在排烟量允许的前提下,可以仅开启离火源位置较近的竖井风机排烟;当火源位于两竖井正中间位置时,可采用双向排烟模式;当火源恰好位于某个竖井正下方时,可以仅开启该竖井风机排烟,但采取该工况应综合考虑隧道内烟道板的耐火极限及耐火时间。

关键词: 排烟竖井, 排烟模式, 排烟效果, 耐火极限

Abstract:

Theoretical analysis and numerical simulation are used to study the impact of the relative position of the fire source and the smoke extraction shaft on the point smoke extraction effect under a city underground road fire condition. The research results show that under a certain amount of smoke exhaust, the closer the exhaust fan to the fire source is, the better the exhaust effect is in the one-way smoke exhaust mode. When the location of the fire source is biased to one of the shafts, if the amount of smoke exhaust is enough, only the shaft fan close to the fire can be turned on to exhaust smoke. When the fire source is in the middle of the two shafts, the two-way smoke exhaust mode can be used. When the fire is located below the shaft, the shaft above the fire can be used to exhaust smoke. When adopting this working condition, the fire resistance rating of the flue plate in the tunnel should be considered comprehensively. 

Key words: smoke exhaust shaft, smoke exhaust mode, smoke exhaust effect, fire resistance rating