【作者】 刘武艺；

【导师】 邵东国；

【作者基本信息】 武汉大学 ， 水利水电工程， 2005， 硕士

【摘要】 城市化进程加快给城市水生态带来一系列影响,改变了原有城市水体自然循环路径,导致城市地区特有的水文效应和水环境效应;城市土地性状以及气候条件的改变使得城市雨洪产汇流特性显著改变,雨洪致灾因素增多。但另一方面传统的城市雨洪排水模式,造成水体的单向循环流动,既造成城市雨水资源浪费,又造成受纳水体污染。因此,现代城市雨洪排水模式应在减少雨洪灾害和发挥雨水资源潜在价值间寻求平衡,并兼顾城市水生态系统健康循环。 本论文以郑东新区CBD区生态水系建设中的雨洪排水资源化利用项目为背景,探讨了面向城市水生态的雨洪利用模式。在查阅大量国内外城市水生态建设及雨洪排水资源化利用资料的基础上,分析了城市化过程中,城市化对水资源、水环境、水循环造成的影响,以及城市雨洪特性及其生态机理,并在此基础上提出了面向城市水生态的雨洪排水系统模型;探讨了一系列城市雨洪就地利用模式(屋顶集雨、下沉式绿地、地面渗透设施等),并对各项措施的就地利用资源量进行了定量分析;提出了城市雨洪径流传输过程模拟模型,阐述了该模型的建模思路,并对城市地区的雨洪涝灾害进行了分析;针对雨洪利用过程中的初期雨洪污染问题和河湖健康循环需求提出了城市雨洪生态净化及河湖水循环设计模型,利用人工湿地净化处理水体并构造湖滨湿地特有景观;提出了城市雨洪集中利用模式,即一方面蓄积雨洪资源作为城市湖泊水源,另一方面将该部分水体用于城市杂用水分配,以促进河湖水体健康循环;从城市雨洪资源化利用综合效益最大角度提出了城市雨洪回用量分析计算模型,并对城市雨洪资源化利用过程中存在的风险进行了定性分析。更多还原

【Abstract】 With the acceleration of urbanization process, a series of problems have appeared and influenced urban hydro-ecology. For one thing, the urbanization process has altered the original water circulation, resulting in the urban-characterized hydrological effect and water environment effect, For another, the process has changed the nature of ground and conditions of climate, causing a fundamental shift in the traits of urban stormwater runoff producing and confluence, as well as more stormwater related factors leading to flood. However, with the traditional urban stormwater drainage mode, a mono-circulation of water system has been formed. The consequence is that rianfall water resource is thus wasted and reception water resource is also contaminated. Therefore, a modern urban stormwater drainage mode should be made to achieve a balance between how to reduce stormwater disasters and how to make use of the potential value of rainwater resource; meanwhile, to maintain the healthy circulation of urban hydro-ecological system.Based on the stormwater drainage resource utilization project in hydro-ecological construction of the new district —CBD (Central Business District) in eastern part of Zhengzhou city, this paper mainly focuses on the discussion of urban hydro-ecology oriented stormwater utilization mode. After reffering to large quantities of data in the country and abroad concerning hydro-ecological construction and stormwater utilization, the author first analyzes how urbanization process influences water resource, water environment and water circulation. Then based on the analysis of stormwater features and its ecological mechanism, the author presents stormwater drainage system modle for urban hydro-ecology orientation.A series of other models are carefully explored in this paper. First, the urban stormwater spot utilization modes are discussed. (such modes include roof-rianwater storage, hollow grassland and ground infiltrating infrastructure , ect). A quantitative analysis has also been carried out on the various measures for spot use. Secondly, the urban storm runoff simulation model is also presented and the construction of the model is elaborated. Meanwhile, flood disasters caused by stormwater in urban areas are analyzed. Thirdly, in order to solve the pollution problems occuring in "the first flush" and tomaintain the healthy circulation of rivers and lakes, tow models are put forward: one is urban stormwater eco-purification model and the other is circulation design model for rivers and lakes, both of which can be helpful in the utilization of constructed wetland to purify water resource systems and thus form unique wetland landscapes. Fourthly, on the question of how to collect urban stormwater for focus usage, another modle is put forward. It is believed that the modle can bring about tow benefits: on the one hand, stormwater can be accumulated to provide water resource for rivers or lakes in cities; on the other hand part of the stormwater can be utilized to meet other urban water distribution demands. Both respects will contribute to a healthy water circulation in rivers or lakes. Finally, by taking the overall interest of urban stormwater resource utilization process into full consideration, a model is presented for the analysis and calculation of the recycled amout of stormwater. Additionally, a qualitative analysis on the risk that exist in the utilization process is carefully conducted.更多还原