植被浅沟在城市雨水管理中的作用机制及调控效应研究

项目名称： 植被浅沟在城市雨水管理中的作用机制及调控效应研究

项目编号： No.51508149

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 其他

项目作者： 张炜

作者单位： 河北工程大学

项目金额： 20万元

中文摘要： 植被浅沟是城市雨水管理的一项重要设施。研究植被浅沟的作用机制对提升其在不同规划目标控制下的雨水调控效能具有重要意义，还可为其他设施的技术革新提供借鉴，进而促进城市雨水管理技术体系的完善。本课题基于植被浅沟的运行方式，分析不同汇流情境下城市典型下垫面雨水径流特征；通过在线监测植被浅沟基质含水率的时空变化，揭示“植被-基质”复合系统对雨水蓄渗的耦合效应及其影响因素；探讨典型径流污染物质在植被浅沟不同空间维度的净化机理、富集规律和淋溶、流失风险；率定在不同规划目标控制下影响植被浅沟运行效能的限定性因子，综合评价植被浅沟在城市雨水管理中的调控效应。该课题具有重要的科学意义和应用价值，为我国海绵城市的科学构建奠定坚实的理论基础。

中文关键词： 植被浅沟；城市雨水管理；作用机理；调控效应；目标控制

英文摘要： Grassed swale is one of the major facilities for urban stormwater management. The investigation on operation mechanism of grassed swale has a vital significance to improve its effectiveness for stormwater control in different planning control objects, which can also provide reference for technological innovation of other facilities and consummate the technical system of urban stormwater management. Based on the operation mode of grassed swale, the runoff characteristics of the typical urban underlying surface under the different runoff conditions were analyzed. Through analyzing the spatio-temporal variation of the soil matrixes by on-line monitoring, the coupling effects and their influence factors of grass-matrix system for stormwater storage and infiltration were revealed. In addition, purification mechanism, enrichment characteristics, leaching and Loss Risk of typical runoff pollutants in different spatial dimensions of grassed swale were discussed. In different planning control targets, the restrictive factors in the operation of grassed swale were determined. And the comprehensive estimation has been made for the control effectiveness of grassed swale in urban stormwater management. The study has significant scientific significance and application value, which will lay a solid theoretical basis in the establishment of sponge city in China.

英文关键词： grassed swale;urban stormwater management;operation mechanism;control effectiveness;object control