姜学鹏,袁月明,李旭

• 1:武汉科技大学资源与环境工程学院
• 2:中国科学技术大学火灾科学国家重点实验室
• 3:北京工业大学建筑工程学院
• 4:中南大学土木工程学院

摘要(Abstract)：

以水平公路隧道为研究对象,运用FDS进行数值模拟,分析了集中排烟模式下对称开启的6个排烟口下方的烟气蔓延规律、烟气层温度和厚度分布规律。结果表明,当排烟速率增大到一定程度时,隧道集中排烟系统存在多个排烟口下方烟气层吸穿的现象,且离火源越远的排烟口越容易发生吸穿,而吸穿会降低整个排烟系统的排烟效率,可能导致排烟口烟气拥堵,易对疏散救援造成消极影响。通过定量描述烟气层厚度和温度与排烟速率之间的关系,获得排烟口下方吸穿的排烟速率范围。

关键词(KeyWords)： 安全工程;集中排烟;吸穿;烟气层厚度;数值模拟

Abstract:

Keywords:

基金项目(Foundation): 中国博士后科学基金项目(2013M540830);; 中国科学技术大学火灾科学国家重点实验室开放课题(HZ2013-KF01);; 北京市博士后科研活动经费资助项目(2013ZZ-02)

作者(Author): 姜学鹏,袁月明,李旭

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