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由北京市水利科学研究所等单位完成。该项目查清了北京规划市区下垫面状况和第四系水文地质条件;确定了北京城区不同类型下垫面的降雨径流定量关系。建立了以不透水面积比率为参数的城区降雨与径流关系综合图,提出了洪峰汇流系数的概念;提出了北京城区的雨洪可利用潜力;摸清了城区屋顶、道路、绿地等不同下垫面的径流水质特征;确定了不同下
By Beijing Institute of Water Conservancy and other units to complete. The project identified the underlying surface conditions of Beijing urban planning and the Quaternary hydrogeological conditions; and determined the quantitative relationship between rainfall runoff and different types of underlying surface in Beijing. A comprehensive map of the relationship between rainfall and runoff in the urban area with the impervious area ratio as a parameter was put forward, the concept of peak confluence coefficient was put forward, the potential of rainstorm utilization in Beijing urban area was put forward, and various underlying structures such as roofs, roads and green spaces in urban area were found out Surface runoff water quality characteristics; identified under different