| 中文题名： | 基于SWMM的鹤壁海绵城市降雨径流模拟及参数优化 |
| 姓名： | |
| 保密级别： | 公开 |
| 论文语种： | 中文 |
| 学科代码： | 082502 |
| 学科专业： | |
| 学生类型： | 学士 |
| 学位： | 工学学士 |
| 学位年度： | 2020 |
| 学校： | 北京师范大学 |
| 校区： | |
| 学院： | |
| 第一导师姓名： | |
| 第一导师单位： | |
| 提交日期： | 2020-06-29 |
| 答辩日期： | 2020-05-22 |
| 中文关键词： | |
| 外文关键词： | SWMM ; Sensitivity Analysis ; Parameter Calibration ; Hebi Sponge City |
| 中文摘要： |
海绵城市建设是解决目前国内城市雨洪问题的重要策略，建立精准的降雨径流模型有利于研究者充分认识集水区的径流传输情况。本文以鹤壁海绵城市试点区的护城河北段排水区为研究对象，借助当地的遥感影像及雨水管网系统CAD资料建立SWMM模型，通过ArcGIS提取坡度和不透水率，并查阅资料获取相关经验参数。采用修正Morris筛选法对模型中的经验参数进行敏感性分析，确定对模型影响最大的参数为Horton下渗速率及衰减系数，影响最小的参数为不透水面曼宁系数。选取一次暴雨事件，采用综合径流系数法对曼宁系数、洼蓄深度、下渗速率等8项参数进行校准，获得一组与实际径流系数相符度较高的参数满意解，使模型的综合径流系数为0.524，并用三场不同强度的典型降雨完成了对模型的验证。本研究为后续开展该区域的LID模型研究奠定了基础。
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| 外文摘要： |
Sponge city construction is an important strategy to solve the problem of urban stormwater at present in China. And a helpful way for researchers to fully understand the watershed runoff-transport situation is to establish an accurate rainfall-runoff model. This paper took a part of the Hebi sponge city pilot area (the north section of the moat) as the research object, and established SWMM model of it with the help of remote-sensing image and the CAD data of drainage system, as well as ArcGIS spatial analysis technology. Modified Morris screening method was taken to analyze the sensitivity of empirical parameters in this model. The parameters which had the greatest effect on the model were determined to be the Horton infiltration rate and attenuation coefficient, while the least sensitive parameter was the Manning coefficient-Imperve. A torrential rain event was selected to calibrate 8 parameters (manning coefficient, infiltration depth, et.) with the method of Comprehensive Runoff Coefficient. The calibration got a set of parameters which were satisfied with the actual runoff coefficient, and the simulated runoff coefficient of the it was 0.524. Three typical rainfall of different intensity were used to verify the model. This research laid a good foundation for the follow-up research on LID model in this region.
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| 参考文献总数： | 36 |
| 插图总数： | 12 |
| 插表总数： | 11 |
| 馆藏号： | 本082502/20004 |
| 开放日期： | 2021-06-29 |
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