公路隧道群污染物串流扩散机理与通风控制方法研究

• 作 者: 陈达章
• 机 构: 广东广乐高速公路有限公司,
• 出 处: 公路交通科技(应用技术版)
• 发表日期: 2017年03期
• 关键词: 隧道群 窜流 纵向间距 隧道通风 射流风机 现场执法 联动控制 控制方法研究 污染气体 隧道出口

本文模拟分析了不同间距、不同风速条件下两隧道间污染物分布情况,揭示了洞口之间污染气体扩散机理,提出了纵向间距50~100m两座相邻隧道污染物窜流百分比35%~65%结论,当洞外横风小于1.0~1.5m/s时,污染物窜流会导致后一隧道洞内污染物浓度超过设计允许浓度;提出了粤北山区复线高速公路间距50~100m隧道群的射流风机一体化设计方法和风速联动控制方法,为公路隧道群相邻隧道通风设施的一体化设计、建设和运营控制提供了技术依据。

In this paper, the distribution of pollutants between two tunnels under different wind speeds and different wind speeds was simulated and analyzed. The mechanism of gas diffusion was revealed between two tunnels. The percentage of channeling of pollutants between two adjacent tunnels with vertical spacing of 50 ~ 100m was 35% ~ 65 % Conclusion When the cross-wind outside the tunnel is less than 1.0 ~ 1.5m / s, the pollutant channeling will cause the concentration of pollutants in the latter tunnel to exceed the design allowable concentration. A tunnel group of 50 ~ 100m spacing of double-track expressway in northern Guangdong is proposed The integrated design method of jet fan and the wind speed linkage control method provide the technical basis for the integrated design, construction and operation control of the ventilation facilities of adjacent tunnels in the highway tunnel group.