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 ›› 2020, Vol. 39 ›› Issue (3): 293-296.

• •    下一篇

喷淋作用下地铁站台烟气流动模拟研究

张雷1,唐智2,4,方正2,4,陈聪3,温裕春3,王梓豪2   

  1. 1.中南建筑设计院股份有限公司,湖北武汉430071;2. 武汉大学土木建筑工程学院,湖北武汉430072;3. 武汉地铁集团有限公司,湖北武汉430030;4. 湖北省城市综合防灾与消防救援工程技术研究中心,湖北武汉430072
  • 出版日期:2020-03-15 发布日期:2020-03-15
  • 通讯作者: :唐智(1985-),男,武汉大学土木建筑工程学院讲师。
  • 作者简介:张雷(1982-),男,湖北武汉人,中南建筑设计院股份有限公司市政工程室主任,高级工程师,主要从事建筑给排水设计研究,湖北省武汉市武昌区中南二路2 号,430071。
  • 基金资助:
    国家自然科学基金项目(51508426,51576144);武汉地铁集团有限公司科研项目(GS- JZ- 229);湖北省自然科学基金项目
    (2015CFB511)

Numerical study of smoke movement on subway platform under the effects of water sprinkler

ZHANG Lei1, TANG Zhi2,4, FANG Zheng2,4, CHEN Cong3, WEN Yu-chun3, WANG Zi-hao2   

  1. 1.Central-South Architectural Design Institute Co., Ltd., Hubei Wuhan 430071, China; 2. School of Civil Engineering, Wuhan University, Hubei Wuhan 430072, China; 3. Wuhan Metro Group Co., Ltd., Hubei Wuhan 430030, China; 4.Engineering Research Center of Urban Disasters Prevention and Fire Rescue Technology of Hubei Province, Hubei Wuhan 430072, China
  • Online:2020-03-15 Published:2020-03-15

摘要: 以某典型地铁站台为研究对象,采用FDS数值模拟方法,分析喷淋系统和排烟系统耦合作用下地铁站台的火灾烟气流动,探讨了喷淋和排烟口高度对站台排烟控制的影响。结果表明:喷淋开启后会诱发喷淋区域内的火灾烟气沉降,能见度低于10 m, 对火源附近的人员疏散不利;而喷淋对火灾烟气的冷却卷吸作用有助于减弱烟气沿站台纵向蔓延动量,有利于喷淋区域外的人员疏散;排烟口高度越高排烟效果越好,但对喷淋区域内能见度的改善效果不显著。

关键词: 地铁火灾, 自动喷水灭火系统, 烟气运动, FDS

Abstract: Focusing on a typical subway platform, the fire smoke behavior under combined effects of a water sprinkler system and a smoke exhaust system has been simulated by means of FDS. The impact of the height of smoke vent on the smoke exhaust has also been discussed. The results showed that the sprinkler system can induce the smoke moving downward inside the sprinkler zone and the visibility was reduced to less than 10 m, which dangers the evacuators around the fire location; on the other hand, the cooling and entrainment effect of water sprinkler is able to reduce the smoke momentum spreading along the platform which benefits the evacuators outside the sprinkler zone; the smoke exhaust efficiency
is higher with the vent height, but its impact is limited to the sprinkler zone visibility.

Key words: subway fire, sprinkler systems, smoke movement, FDS