涉及隧道的市政道路项目运营期大气环境影响评价

发布时间：2018-10-29 16:47

【摘要】：随着国内汽车保有量的逐步增加,市政道路基础设施的需求增大,市政道路逐步由平面交通向立体式交通方式发展,城市高架桥、立交桥以及隧道不断的在市政道路建设中体现。由于涉及隧道的市政道路大气污染物在隧道口和排气口形成较为集中的排放源,这与其他市政道路污染物排放方式形成鲜明的对比,因此,市政隧道污染物的排放所带来的影响逐渐受到了越来越多的学者的关注,对涉及隧道的市政道路项目大气影响进行研究具有重要的理论价值和实际意义。论文以达州市凤凰山隧道工程项目为例,实地考察了项目沿线环境空气敏感点分布,并以计算流体动力学CFD模式构建的隧道口体源源强为基础,通过AERMOD模式对隧道工程运营期大气环境的影响进行了预测和评价,在此基础上提出了与之对应的大气防治措施,并分析了措施的可行性。论文的研究成果可为达州市凤凰山隧道工程项目运营期的大气污染防治提供参考和借鉴,也可为类似项目大气环境影响评价提供参考。论文研究表明,达州市凤凰山隧道内各断面处的CO浓度达到了《公路隧道通风照明设计规范》规定的标准要求；项目隧道外所有敏感点处、凤凰村以及莲花湖片区规划区CO、NO2浓度在营运近、中、远期的小时、日均、年均最大落地浓度值都能达到《环境空气质量标准》(GB3095-2012)中的二级标准要求,项目对区域大气环境的影响可以接受。
[Abstract]:With the gradual increase of domestic automobile ownership and the increasing demand for municipal road infrastructure, municipal roads are gradually developing from plane traffic to three-dimensional traffic mode, and urban viaducts, Overpasses and tunnels are constantly reflected in the construction of municipal roads. Since atmospheric pollutants from municipal roads involved in tunnels form more concentrated sources of emissions at tunnel entrances and vents, which is in sharp contrast to other municipal road pollutant emission modes, therefore, More and more scholars pay more and more attention to the impact of pollutant emission from municipal tunnels. It is of great theoretical and practical significance to study the atmospheric effects of municipal road projects involving tunnels. Taking the Fenghuangshan Tunnel Project in Dazhou City as an example, the distribution of ambient air sensitive points along the project is investigated in this paper, and the source strength of the tunnel mouth is calculated based on the CFD model of fluid dynamics. Based on the prediction and evaluation of the influence of AERMOD model on the atmospheric environment during the tunnel operation period, the corresponding atmospheric prevention measures are put forward and the feasibility of the measures is analyzed. The research results of this paper can be used as reference for the prevention and control of atmospheric pollution during the operation period of Fenghuangshan Tunnel Project in Dazhou City, and also for the atmospheric environmental impact assessment of similar projects. The research shows that the CO concentration in each section of Fenghuangshan Tunnel in Dazhou City has reached the standard requirement of the Design Code for ventilation and Lighting of Highway Tunnel. All sensitive points outside the project tunnel, Phoenix Village and the Lotus Lake area planning area CO,NO2 concentration in the operation of the near, medium, long-term hours, daily average, The annual maximum landing concentration can reach the second level standard in GB3095-2012, and the impact of the project on the regional atmospheric environment is acceptable.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X82

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