基于海绵城市理念的低影响开发设施应用研究

Research on Application of Low-Impact Development Facilities Based on the Idea of Sponge City

近年来,海绵城市是从整体区域出发解决我国水危机的新理念,低影响开发(LID)设施是构建海绵城市的基本框架。不同LID设施具有其独有的特性和适用情景,为筛选可应用于实际工程中的性价比最优海绵园区建设模式,文章基于先前学者研究对单个LID措施结构特点进行了对比总结。同时,文章以北京市亦庄调节池一期工程园区为例构建了暴雨洪水管理模型(Storm Water Management Mmodel,SWMM),模拟分析了多种海绵园区建设模式的径流削减效果及性价比,结果表明性价比最优的建设模式为透水铺装、下凹绿地及植草沟联用模式,生态效益最优的建设模式为透水铺装、下凹绿地、植草沟、生物滞留槽及绿色屋顶联用模式,为日后海绵园区的建设提供了科学参考。

In recent years,"sponge city"is a new concept to solve the water crisis in our country from the perspective of the whole region.The facilities of low impact development(LID)are the basic framework that constitutes the sponge city.Different LID facilities have their unique characteristics and applicable scenarios.In order to select the best cost-effective sponge park construction model which can be used in practical projects,this paper compares and summarizes the structural characteristics of single LID measures based on previous research.At the same time,taking the First Phase Project Park of Beijing Yizhuang Regulation Pool as an example,this paper constructs a Storm Water Management Model(SWMM),simulating and analyzes the runoff reduction effect and cost performance ratio of several sponge park construction modes.The results show that the best construction mode is the combination of permeable paving,lower concave green space and planting grass ditch,and the best ecological benefit is the combination of permeable paving,lower concave green space,planting grass ditch,biologic retention trough and green roof,and the best construction mode is the combination of permeable paving,lower concave green space,planting grass ditch,biologic retention trough and green roof,thus providing a scientific reference for the construction of sponge parks in the future.