自然开口及射流风机位置对公路隧道CO浓度分布的影响

发布时间：2018-05-11 07:30

  本文选题：环境工程 + 城市隧道　； 参考：《公路交通科技》2014年08期

【摘要】：为了优化公路隧道自然开口及射流风机的位置,实现降低隧道建设成本、节约能源和减少环境影响的目的,以开设自然开口的公路隧道分段式纵向通风方式为研究对象,通过建立公路隧道的通风数学模型,研究自然开口和射流风机的布置位置对隧道C0浓度分布的影响。研究表明:设置自然开口后,隧道内污染物浓度分布情况并非一定优于不布置自然开口;在多自然开口通风方案中,将距离隧道出口较近的自然开口作为排风自然开口可提高分污效果;将自然开口集中布置在隧道后部,同时将较多的射流风机布置在自然开口群后端,可增大隧道出口的实际通风量并降低隧道出口污染物浓度。
[Abstract]:In order to optimize the position of natural opening and jet fan of highway tunnel, reduce the cost of tunnel construction, save energy and reduce the environmental impact, this paper takes the longitudinal ventilation mode of highway tunnel with natural opening as the research object. By establishing the ventilation mathematical model of highway tunnel, the influence of the natural opening and the arrangement of jet fan on the distribution of C0 concentration in the tunnel is studied. The study shows that the distribution of pollutant concentration in the tunnel is not always better than that without the natural opening after the natural opening is set up, and in the ventilation scheme of multiple natural openings, Using the natural opening near the tunnel outlet as the natural opening of the exhaust air can improve the effect of separating pollution, and the natural opening is arranged in the back of the tunnel, and more jet fans are arranged at the back of the natural opening group. It can increase the actual ventilation of tunnel outlet and reduce the pollutant concentration at tunnel outlet.
【作者单位】： 天津大学;天津市市政工程设计研究院;铁道第三勘察设计院集团有限公司;
【基金】：2010年度天津市科委科技支撑重点计划项目(10ZCKFSF02300)
【分类号】：U453.5
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本文编号：1873000