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 (7): 977-982.

• • 上一篇    下一篇

曲线隧道射流风机通风效率优化研究

陈研1,王天雄2,陶浩文2,徐志胜2   

  1. 1. 南京市公共工程建设中心,江苏南京210004;2. 中南大学土木工程学院,湖南长沙410075
  • 出版日期:2021-07-15 发布日期:2021-07-15
  • 通讯作者: 徐志胜(1962-),男,中南大学土木工程学院教授。
  • 作者简介:陈研(1974-),女,南京市公共工程建设中心高级工程师,学士,主要从事桥梁与隧道防灾减灾研究,江苏省南京市建邺区江心洲街道梅子洲路69 号,210004。
  • 基金资助:
    中央高校基本科研业务费专项资金(2019zzts075);湖南省研究生科研创新项目(CX20190131)

Study on optimization of ventilation efficiency about jet fan in curved tunnel

CHEN Yan1, WANG Tian-xiong2, TAO Hao-wen2, XU Zhi-sheng2   

  1. 1. Nanjing Public Engineering Construction Center, Jiangsu Nanjing 210004, China; 2. School of Civil Engineering, Central South University, Hunan Changsha 410075, China
  • Online:2021-07-15 Published:2021-07-15

摘要: 隧道射流通风系统中的射流风机布置方式可以直接影响到隧道通风系统的通风效率,其中曲线隧道的射流流场分布规律又区别于一般直线隧道。本文以建宁西路地下互通工程为依托,采用CFD 软件针对曲线隧道中射流风机的横向间距与布置位置、风机偏转角度、纵向间距等参数进行数值模拟,分析了不同工况下的流场分布、风机升压能力。结果表明:在曲线隧道中,当射流风机横向间距为2 倍风机直径,且靠近隧道凸面朝凹面区偏转5°~10°时风机下游流场分布较为均匀,隧道通风效果良好;射流风机纵向布置间距不宜大于100 m。

关键词: 曲线隧道, 纵向通风, 折减系数, 偏转角度, 数值模拟

Abstract: Based on the underground interchange project of Jianning West Road, CFD software was used to simulate the horizontal spacing and arrangement position of the jet fans in the curved tunnel, the deflection angle of the fans, the longitudinal spacing, then the flow field distribution and jet fans booster capacity under different cases were analyzed. The results showed that in a curved tunnel, when the lateral spacing of the jet fan is twice the diameter of the fan, and it is close to the convex surface of the tunnel and deflected by 5° to 10° toward the concave area, the downstream flow field distribution of the fan is relatively uniform, and the tunnel ventilation effect is good. The longitudinal spacing of jet fans should not be greater than 100 m.

Key words: curve tunnel, longitudinal ventilation, reduction factor, deflection angle, numerical simulation