| 摘要: |
| 绿地有一定的雨洪调蓄功能，雨洪状况下，如何在汇水系统尺度利用和保护绿地亟待研究。选取95处位于武汉港西汇水系统的地块，调研地块性质，利用ArcGIS提取不透水比例及平均坡度，并进行SWMM水文模型演算。通过实验性模拟结果的对比，得出汇水系统的绿地雨洪调蓄效率(λ＝0.13m3/m2)、汇水系统(g＝36%)和各类用地(g＝18%～47%)基于雨水调蓄理念下的最低绿地率，使汇水系统水文状况达到海绵城市建设标准。讨论了不同重现期下汇水系统的绿地雨洪调蓄效能，旨在完善绿地雨洪调蓄的研究方法、指标体系及利用与保护策略，为相关研究与实践提供借鉴。 |
| 关键词: 风景园林 汇水系统 绿地 雨洪调蓄 |
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| Stormwater Regulation and Storage by Green Space of Drainage System: A Case Study of West Port Drainage System in Wuhan |
| YE Yang,QIU Hongfei |
| Abstract: |
| Under the condition of stormwater, how to use and protect the green space at the scale of drainage system needs to be studied. Ninety-five plots located in the West Port drainage system in Wuhan were selected to investigate. The impervious ratio and average slope were extracted by ArcGIS, and the SWMM model calculation was carried out. Through the comparison of the experimental simulation, it concluded the rainwater storage efficiency of the drainage system (λ=0.13m3/m2), the lowest green space rate of drainage system (g=36%) and various plots (g=18%-47%) based on the rainwater storage, so that the hydrological condition of the drainage system can reach the standard of sponge city. In order to improve the research method, index system, utilization and protection strategy of green space in rainwater storage, and provide reference for related research and practice, the paper discussed the stormwater storage efficiency of the drainage system in different stormwater condition. |
| Key words: landscape architecture drainage system green space stormwater storage |
