润玉园生态社区中的雨洪管理策略和设计

Strategy and Design of Stormwater Management in Runyuyuan Ecological Community

润玉园小区位于云南省玉溪市,应海绵城市建设要求,对其进行雨水设施体系和中心湖的改造,从而达到年径流总量控制率为85%、SS控制率> 45%、水体为地表水Ⅲ类水质的目标。此项设计中充分利用场地现状、当地材料、乡土植物等因素,综合构建了源头减排、过程控制、末端治理全过程海绵系统,通过LID设施组合,如雨水花园、植草沟、人工湿地、生态修复等,实现了85%的年径流总量控制率和排水防涝标准达标,满足水量控制、内涝防治、水质控制等要求。

Runyuyuan community is located in Yuxi City,Yunnan Province. In accordance with the requirement of sponge city construction,the rainwater facility system and the central lake would be reformed to reach 85% volume capture ratio of annual rainfall,45% suspended solid control and class Ⅲwater quality requirements for surface water. The present situation of the site,local materials,indigenous plants and other factors were made full use to perform comprehensive construction of the source emission reduction,process control,terminal treatment of the entire process of sponge system. Through the combination of LID facilities,such as rain garden and grassed swale,the volume capture ratio of annual rainfall reached 85%,drainage and waterlogging control could be met,and the requirements of water quantity control,waterlogging control,water quality control and others were achieved.