海绵城市建设的径流控制指标探析

发布时间：2019-01-23 13:55

【摘要】：城市化引起的诸多水生态、水环境及洪灾问题均与天然水文条件的破坏紧密相关;水文控制指标是海绵城市建设中的关键控制指标。在调研国际城市雨洪管理的演变及目前城市水文控制指标发展趋势的基础上,提出海绵城市建设所必需的水文控制指标体系概念。该体系包括维持河湖湿地基流与地下水补给的入渗控制指标,减少雨洪面源污染的水质控制指标,防止河道侵蚀的水土侵蚀控制指标,以及避免小量级洪涝和减轻极端洪涝灾害的洪水控制指标。在此基础上,分析了我国在海绵城市建设中缺乏完整水文控制指标体系的现状,并提出了我国目前在建立城市雨洪管理水文控制指标工作中亟待开展的工作,为海绵城市建设中合理确定适合各地具体条件的水文控制指标体系提供研究思路与参考。
[Abstract]:Many problems of water ecology, water environment and flood caused by urbanization are closely related to the destruction of natural hydrological conditions, and the hydrological control index is the key control index in the construction of sponge cities. On the basis of investigating the evolvement of rain flood management in international cities and the development trend of urban hydrological control index at present, the concept of hydrological control index system necessary for the construction of sponge city is put forward. The system includes water quality control index to maintain the basic flow and groundwater recharge of river and lake wetland, water quality control index to reduce rain flood non-point source pollution, and soil erosion control index to prevent river erosion. And the flood control index to avoid small scale flood and reduce extreme flood disaster. On this basis, this paper analyzes the present situation of the lack of a complete hydrological control index system in the construction of sponge city in China, and puts forward the urgent work to be carried out in establishing the hydrological control index for urban rain flood management in China. The research ideas and references are provided for the rational determination of the hydrological control index system suitable for the specific conditions in the construction of sponge city.
【作者单位】：中国水利水电科学研究院;水利部防洪抗旱减灾工程技术研究中心;
【分类号】：TU992;TV121

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