城市公共空间雨水径流的景观化循环利用策略

Landscape Design Research on Rainwater Runoff Recycling in Urban Public Spaces

摘要: 城市公共空间作为城市中重要且独特的空间资源，在提升城市环境、传承历史风貌和推进城市发展上有着巨大的价值，城市公共空间的存量资源活化与更新设计研究具有重要的现实意义。以景观小品式径流雨水循环利用系统设计为研究目标，采用煤矸石和玉米秸秆为主要基质共炭化制备高通孔型生态砌块并对材料的吸附性能、水理性能、力学性能进行表征，以生态砌块为核心构建了联合循环系统(EBCCS)并通过柱实验方法优化了系统设计条件和对雨水径流溶解性有机质(DOM)的去除效率，并以EBCCS为核心提出了面向城市公共空间微更新的功能型装配式景观小品设计方案，为深入挖掘城市空间的多元价值和盘活公共空间存量资源提供新思路。

Abstract: Urban public space, as an important and unique spatial resource in the city, has enormous value in improving the urban environment, inheriting historical style, and promoting urban development. The research on the activation and renewal design of existing resources in urban public space has important practical significance. The research objective is to design a landscape sketch style system for rainwater runoff recycling. Coal gangue and corn straw are used as the main substrates for co-carbonization to prepare high porosity ecological blocks, which the adsorption performance, water physical properties, and mechanical properties of the materials are characterized. A combined cycle system (EBCCS) is constructed with ecological blocks as the core, which the system design conditions and removal efficiency of dissolved organic matter (DOM) in rainwater runoff are optimized through column experiments. A design plan of functional prefabricated landscape sketch for urban public space micro-renewal is proposed with EBCCS as the core, providing new ideas for exploring the diverse value of urban space and activating the stock resources of public space.