摘要
建立具有侧向防渗结构的雨水花园模拟试验装置,基于HYDRUS-2D软件平台建立雨水入渗模型,验证了侧向防渗效果以及模型参数设置的合理性,然后对某采取侧向防渗措施的雨水花园进行模拟。结果表明,HYDRUS-2D软件可以模拟雨水花园土壤水分二维入渗过程,且模拟可靠性较高;增设防水材料后雨水花园取得了较好的侧向防渗效果;雨水花园在靠近建筑物一侧增设防水材料可以有效减少侧向入渗,与不增设防水材料时相比湿润锋运移距离平均减小了60.6%;与《海绵城市建设技术指南——低影响开发雨水系统构建(试行)》的规定相比,当雨水花园的有效保护距离为1.5 m时,可将增设防水材料的雨水花园设置在距离建筑物2.35 m处。
A rain garden simulation test equipment with lateral impervious structure was set up, and HYDRUS-2D software platform was employed to establish a rainwater infiltration model of the equip- ment. The effect of lateral impervious structure and the rationality of model parameters setting were veri- fied. Then, a real rain garden with lateral impervious structure was simulated. The results indicated that two-dimensional infiltration process of the rain garden could be simulated by the HYDRUS-2D software, and the simulation reliability was high. Good lateral impervious effect was achieved by the rain garden built with lateral impervious protective measures. The rain garden built with waterproof material near the side of the building could inhibit the lateral infiltration effectively, and the transport distance of wetting front could be decreased by an average of 60.6% compared with that of the rain garden without water- proof material. Compared with 1.5 m effective protection distance of a rainwater garden proposed in Sponge City al could be Low Impact Development, a rain garden with waterproof materi- set at 2.35 m away from the building.
作者
袁志明
卢金锁
YUAN Zhi-ming;LU Jin-suo(School of Environmental and Municipal Engineering, Xi＇an University of Architecture and Technology, Xi＇an 710055, China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2018年第13期130-134,共5页
China Water & Wastewater
基金
西部绿色建筑国家重点实验室培养基地开放研究基金资助项目(LSKF201703)
