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- Title
基于SCS-CN 模型在山地海绵城市 不同下垫面径流预测的优化及应用.
- Authors
雷晓玲; 邱丽娜; 魏泽军; 罗棉心
- Abstract
Due to its unique topography and landform, the process of rainfall production and confluence in mountainous areas is more com⁃ plex, and the potential water environment problems should not be underestimated. The selection and establishment of the rainfall runoff pre⁃ diction model in this area can provide hydrological support and reference for the construction and reconstruction of sponge cities in the future. The SCS-CN model proposed by the Soil Conservation Service of the United States Department of Agriculture is not very applicable regional⁃ ly, so it is necessary to optimize the parameters in the model to improve prediction accuracy. This paper uses a typical mountain city named Chongqing as an example to select Banan District, an undeveloped area, as the research object. It uses the artificial rainfall simulation exper⁃ iments for different underlying surface conditions of rainfall runoff series data. Based on sponge urban construction measures, the bare land, permeable shop is designed, and the grass of three methods for land use, three kinds of underlying surface optimization coefficient of the ear⁃ ly damage of λ are 0.01, this paper considers the antecedent soil moisture conditions, bare land, permeable pavement. The NSE coefficients of the standard model increased by 9.41%, 16.36%, 5.62% and 2.72%, 5.37%, 4.08% in the optimized parameter models of bare land, permeable brick paving and grassland.
- Publication
China Rural Water & Hydropower, 2021, Issue 11, p49
- ISSN
1007-2284
- Publication type
Article