海绵城市试点山地型校园海绵化改造方法实践

以海绵城市试点山地型校园海绵化改造为工程背景,通过对下垫面的构成特点、校园总体高程情况、排水系统构成、空间功能布局以及当地水文地形特征等进行系统研究,以控制雨水径流总量为目标,针对阶梯型山地校园特点制订了特色方案。海绵化改造主要从管网改造、雨水利用、景观绿化三个方面进行,研发出了功能分类、分区汇水、上蓄下用、多级滞留、分级处理的海绵化改造方法,并预估评价了工程应用效果。工程实施后,实际运行效果良好,优于预估效果。

Practice of Sponge Transformation Method of Mountainous Type Campus in Sponge City

Taking mountainous type campus in sponge city pilot as the sponge transformation project background, the characteristics of underlying surfaces, overall elevation of the campus, the composition of drainage system, the layout of spatial functions and characteristics of the local hydrographic and topography were studied. In order to control the total rainwater runoff, a characteristic scheme of the sponge transformation project was decided according to step-by-step campus. Transformation was carried out from pipe network reconstruction, rainwater utilization and landscape greening. A method including functional classification, regional water diversion and catchment, high storage and low use, storage multi-stage detention and stage treatment was put forward. Engineering application effect was forecasted and estimated. After the implementation of the project, the actual operation effect was good and better than the predicted effect.