广州科技教育城海绵城市透水铺装适宜性分析与研究

Analysis and Research on the Suitability of Permeable Pavement in Construction of Sponge City in Guangzhou Science and Technology Education City

本文分析了“科教城”自然客观条件和海绵城市透水铺装地面的现状。分析了目前基于渗透面层透水铺装的优缺点,其因透水结构多孔材料容易造成堵塞而失去效能,清洗难度较大,海绵城市建设中应慎重采用基于透水面层的透水铺装,不宜将其作为径流污染控制的技术指标。推荐采用一种基于“雨水渗透-排放一体生态系统”的复合渗透地面,实现雨水汇集、排放、消减、滞水、渗透多融合目标,是海绵城市新一代透水铺装的工程技术。尝试对透水铺装进行量化评价方法,体现了透水铺装设计因地制宜的差异性。

The natural objective conditions of the"Science and Education City"and the current situation of the permeable pavement project of the Sponge City are analyzed.The advantages and disadvantages of permeable pavement based on permeable surface layer are analyzed,since it is difficult to clean because porous materials of permeable structure are easy to cause blockage and lose efficiency.The permeable pavement based on permeable surface layer should be carefully used in the construction of Sponge City,and should not be used as the technical index of runoff pollution control.It is recommended to adopt a composite permeable ground based on the"rainwater infiltration-drainage integrated ecosystem"to achieve the multiple integration goals of rainwater collection,drainage,reduction,stagnant water and infiltration,which is a new generation of permeable pavement engineering technology for Sponge City.The quantitative evaluation method of permeable pavement is attempted,which reflects the difference of permeable pavement design according to local conditions.