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 (5): 639-643.

• • 上一篇    下一篇

隧道内顶棚和侧向机械排烟效果对比

钟委1,孙超鹏1,马文辉1,高子鹤2,赵军1   

  1. 1. 郑州大学力学与安全工程学院,河南郑州467000;2. 郑州大学土木工程学院,河南郑州467000
  • 出版日期:2021-05-15 发布日期:2021-05-14
  • 通讯作者: 高子鹤(1990-),男,河南周口人,郑州大学土木工程学院博士研究生,主要从事地下空间火灾防治理论及技术研究,河南省郑州市高新区科学大道100 号,467000。
  • 作者简介:钟委(1978-),男,重庆江津人,郑州大学力学与安全工程学院副教授,博士,主要从事地下建筑火灾防治及化工安全技术研究,河南省郑州市高新区科学大道100 号,467000
  • 基金资助:
    河南省省科技攻关重点项目资助(182102310007);国家留学基金委资助(201807045042);国家自然科学基金-青年科学基金项目资助(51706219)

Comparison of smoke exhaust effect between ceiling and lateral mechanical smoke exhaust in tunnel

ZHONG Wei1, SUN Chao-peng1, MA Wen-hui1, GAO Zi-he2, ZHAO Jun1   

  1. 1. School of Mechanics and Safety Engineering, Zhengzhou University, Henan Zhengzhou 467000, China; 2. School of Civil Engineering, Zhengzhou University, Henan Zhengzhou 467000, China
  • Online:2021-05-15 Published:2021-05-14

摘要: 为了比较顶棚机械排烟和侧向机械排烟在隧道火灾中的排烟效果,采用数值模拟的方法对隧道火灾中两种排烟方式的温度分布、流场分布、排烟量、排热量以及排烟效率进行对比。结果表明,两种排烟方式的流场分布与烟气吸入方式差别较大;侧向机械排烟更容易发生吸穿;顶棚机械排烟的排烟量和排热量更高,排烟效果更好;侧向机械排烟由于更容易发生吸穿,导致大量的空气进入排烟口,其排烟效率始终小于顶棚机械排烟。

关键词: 顶棚机械排烟, 侧向机械排烟, 隧道火灾, 吸穿

Abstract: In order to compare the smoke exhaust effect of ceiling mechanical smoke exhaust and lateral mechanical smoke exhaust in tunnel fire, the temperature distribution, velocity vector field distribution, smoke output, heat output, and smoke exhaust efficiency of the two smoke exhaust methods in tunnel fire were numerically simulated. The results show that the velocity vector field distribution and the smoke inhalation method of the two smoke exhaust methods are quite different. The ceiling mechanical exhaust has higher smoke exhaust volume and exhaust heat, and the exhaust effect is better; The lateral mechanical smoke exhaust is more likely to occur plug-holing and cause the fresh air drawn directly into the smoke exhaust system, and its smoke exhaust efficiency is always less than that of the ceiling mechanical smoke exhaust.

Key words: ceiling mechanical smoke exhaust, lateral mechanical smoke exhaust, tunnel fire, plug-holing