高原地区阶梯型坡地小区海绵城市改造实践

Practice of Sponge City Reconstruction in Stepped Slope of Plateau Area

玉溪市润玉园小区为高原地区阶梯型坡地小区,在其海绵城市改造工程中,对坡地和管道集中排水的传统模式进行了分析,对阶梯型坡地小区的石质边坡、土质边坡、硬质排洪沟及景观湖的海绵改造方式和方案进行了研究,根据高原地区阶梯型坡地小区特点制订了分散式的雨水管理模式及因地制宜的高蓄低用方案。在具体工程应用中发现该方案能够充分利用阶梯型坡地的特点,通过最小功耗实现雨水资源利用最大化,对类似高原地区阶梯型坡地小区海绵城市改造有重要的参考价值。

Runyuyuan district in Yuxi is a typical district with stepped slope in plateau area. In the reconstruction project of sponge city, the traditional model of the concentrated drainage pattern of the slope area and the pipe line was discussed. This paper also studied the method and scheme of sponge reconstruction of stone slope, soil slope, hard drainage ditch and landscape lake in step slope area. Decentralized rainwater drainage mode and high storage and low use plan according to local characteristics of the terraced slope conditions were determined. It was found that the scheme could make full use of terraced slope characteristics and realize the maximum utilization of rainwater resources through the minimum power consumption. It is of great reference value for the sponge city reconstruction in the terraced slope area similar to the plateau area.