基于在线监测+模型的海绵城市建设径流水量控制效果研究

印定坤; 陈正侠; 杨萌祺; 贾海峰; 许可; 王腾旭

doi:10.13205/j.hjgc.202004027

基于在线监测+模型的海绵城市建设径流水量控制效果研究

doi: 10.13205/j.hjgc.202004027

1. 清华大学环境学院, 北京 100084;
2. 中国市政工程华北设计研究总院有限公司, 北京 100081

基金项目:

北京市自然基金项目（8161003）；清华大学自主科研计划资助项目（2019Z0UOA）；国家水体污染控制与治理科技重大专项（2017ZX07205003）。

详细信息

作者简介:
印定坤(1994-),男,博士研究生,主要研究方向为城市雨洪管理和水环境系统分析。ydk19@mails.tsinghua.edu.cn

通讯作者:
贾海峰(1967-),男,博士,教授,主要研究方向为环境系统分析。jhf@tsinghua.edu.cn

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出版历程
- 收稿日期: 2020-01-17

EVALUATION OF RUNOFF CONTROL EFFECT IN SPONGE CITY CONSTRUCTION BASED ON ONLINE MONITORING+SIMULATION MODELING

1. School of Environment, Tsinghua University, Beijing 100084, China;
2. North China Municipal Engineering Design & Research Institute Co., Ltd, Beijing 100081, China

摘要

摘要: 以青岛市海绵城市典型项目区为研究区，通过收集、整理和概化汇水区资料，构建了研究区降雨径流模型——SWMM模型。利用2018年雨季的降雨-径流实时监测数据，进行了模型关键参数的率定和模型验证，研究了海绵城市建设在削减径流量、增加入渗与滞蓄雨量方面的定量效果。结果显示：海绵改造后，不同降雨强度下形成径流的雨量占总雨量的平均比例由56%下降至29%；下渗雨水的平均比例由40%增加至60%，滞蓄深度由0.63 mm增加至5 mm。海绵改造前后研究区场降雨径流总量控制率变化显著，当以1~10年一遇的短历时（120 min）设计降雨作为模型边界条件进行模拟时，海绵化改造后场次降雨径流总量控制率提高了26%~34%，认为研究区基本达到了海绵城市关于水量控制的建设要求。
- 海绵城市 /
- 监测 /
- SWMM /
- 水量控制 /
- 情景分析
Abstract: In this study, we took a typical sponge city project in Qingdao area as the study case, and constructed a SWMM model through collecting, sorting, and generalizing the watershed data. Actual rainfall-runoff monitoring data in rainy season of 2018 was employed for calibration and validation of the model. The results revealed that the construction of sponge city endowed the study area with reduced runoff, and increased infiltration and stagnant capabilities. The results showed that the proportion of rainfall to form runoff decreased from 56% to 29% and the proportion of rainfall to infiltrate increased from 40% to 60%. The depth of detention storage increased from 0.63 mm to 5 mm. The construction target of the study area was to control the total annual runoff at 75%, and the corresponding design rainfall was 27.4 mm. The runoff capture ratio of single event in the research area before and after sponge reconstruction changed significantly. When the short-term (120 min) design rainfall with return period from 1~10 years was used as the model boundary condition for simulation, the runoff capture ratio after sponge reconstruction increased by 26%~34%. It was considered that the study area had basically reached the sponge city construction requirements on rainfall runoff control.
- sponge city /
- monitor /
- SWMM /
- runoff control /
- scenario analysis

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