基于自然地理的西咸新区海绵城市本土化建设探析

摘要

针对不同自然地理条件下海绵城市建设迫切需要技术本土化的问题,以西咸新区海绵城市建设为例,探析其在海绵城市建设过程中的本土化策略、方法和初步成果.西咸新区海绵城市建设基于降水分布不均、水资源紧缺、生态环境敏感、土壤类型复杂等现状问题,从技术手段组合、建设区域划分、设施本土化设计到乡土植物配置等四方面进行探索性实践研究;重点梳理渗透铺装、下沉绿地、雨水花园、生态滤沟四种设施的本土化设计成果;并以典型强降雨条件下的试点区雨水消纳的实际情况来验证建设的成效.相关海绵城市本土化建设思路、方法、成果,较好地适应了地域环境,为类似地区的海绵城市建设提供了可参照的模式和技术.%According to the fact that the sponge urban construction urgently need technical localization because of the different natural geographical conditions. Taking the construction of the sponge urban in Xixian New Area for example, we analyzed the localization strategy, methods and preliminary results in the process of sponge urban construction. Based on the current situations of Xixian New Area, such as uneven precipitation, water shortage, ecologically sensitive and soil type complicated, we conducted exploratory practice research from four aspects:technology combination, the construction of a regional division, facilities localization design to native plant configuration and so on. Then we focused on the localized design results of the four facilities: permeable pavement, sunken green space, rain garden, biological filter. In addition, we also verified the effectiveness of construction according to the amount of rainwater absorbed during the heavy rain. The thinking, methods and results of the localization of the related sponge urban construction have better adapted to the regional environment, which provides a reference model and technology for the construction of sponge urban in similar areas.