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一、立项背景海河隧道是天津市滨海新区中央大道工程穿越海河的一个重要节点工程,隧道全长3.38公里,其中封闭段2988米。海河隧道封闭长度较长,常规设计需要在于家堡金融区的核心区域设置排风塔,形成分段式通风,且排风塔高度至少在15米以上,才能够满足环评要求,但这种设计方案无法与景观结合。鉴于此,拟采用在海河隧道东线北端顶部设置自然风口的方式进行污染物分流。虽然我国已经有了采用顶部开孔自然通风方式的先例,但是目前研究和应用的自然通风方式开孔面积较大,无法应用于海河隧道。因此,本项目提出利用交通风和射流风机升压力的综合调
I. Project Background The Haihe River Tunnel is an important node crossing the Haihe River at the Central Avenue project of Binhai New Area in Tianjin. The tunnel is 3.38 kilometers in length, of which 2988 meters is enclosed. Haihe River Tunnel closure longer, conventional design needs in the core area of Jiabao financial district exhaust tower, the formation of segmented ventilation, and exhaust tower height of at least 15 meters in order to meet the requirements of the EIA, but this design Program can not be combined with the landscape. In view of this, it is proposed to use a natural tuyere at the top of the northern end of the east line of the Haihe River Tunnel for pollutant diversion. Although there is a precedent for adopting natural ventilation with open top in our country, the natural ventilation mode of research and application currently has a large open area and can not be applied to the Haihe tunnel. Therefore, this project proposes to make use of the comprehensive adjustment of the traffic wind and jet fan boosting pressure