LILei,HOUJing-ming,ZHOUQing-shi,et al.Effects of Rainfall Patterns and Discharge Outlet Water Levels on Urban Waterlogging[J].China Water & Wastewater,2025,41(21):162-168.
降雨雨型和排口水位对城市内涝的影响
- Title:
- Effects of Rainfall Patterns and Discharge Outlet Water Levels on Urban Waterlogging
- Keywords:
- urban waterlogging; coupled model; rainfall pattern; discharge outlet water level; long-duration rainfall
- 摘要:
- 以宁波市某区域为研究对象，基于GAST-SWMM耦合模型，研究不同超标准降雨雨型和排口水位条件下的内涝积水情况。结果表明，不同降雨雨型导致的城市内涝情形存在明显差异，其中雨峰系数为0.8的单峰雨型造成的淹没面积最大，在排口自由出流、重现期为1 000年条件下，其最大淹没面积比雨峰系数为0.2的单峰雨型大12%；在雨峰系数为0.8的单峰雨型工况下，排口水位的变化会影响最大淹没面积，当排口水位从自由出流增加到超过排口顶1 m时，各重现期下的最大淹没面积相比自由出流时的增幅从小于1%逐渐增加到10%以上，但当水位淹没排口不超过50%时，淹没面积没有显著变化；排口水位升高并不一定会导致管网排水能力下降，当排口水位使管网适当满流时，会提升管网的排水能力。
- Abstract:
- A study was conducted on urban waterlogging in a specific area of Ningbo City using GAST-SWMM coupled model under various scenarios of excessive rainfall patterns and varying discharge outlet water levels. Rainfall patterns significantly influenced urban waterlogging situations. Specifically, the single-peak rainfall pattern with a peak coefficient of 0.8 resulted in the largest inundation area. Under free outlet discharge conditions and a 1 000-year return period, its maximum inundated area was 12% greater than that associated with the single-peak rainfall pattern having a peak coefficient of 0.2. Under the single-peak rainfall pattern simulation with a rain peak coefficient of 0.8, variations in the water level at the discharge outlet influenced the maximum inundation area associated with urban waterlogging. When the water level at the discharge outlet rose from free outflow conditions to more than 1 m above the outlet crest, the maximum inundation area across all return periods gradually increased by over 10% compared to free outflow, rising from less than 1%. However, when the water level of discharge outlet submergence was equal or lesser than 50%, the urban waterlogging area remained largely unchanged. An increase in the water level at the discharge outlet did not necessarily result in a reduction in the drainage capacity of the pipeline network. Under conditions where the elevated water level induced a moderately full flow state within the pipeline network, the drainage efficiency could be enhanced.
相似文献/References:
[1]张海行,张伟,杨文辉,等.基于水力排水模型的宁波海绵试点区内涝风险评估[J].中国给水排水,2020,36(12):8.
ZHANG Hai-xing,ZHANG Wei,YANG Wen-hui,et al.Assessment of Urban Waterlogging Risk in Ningbo Sponge City Pilot Area Based on Hydraulic Drainage Model[J].China Water & Wastewater,2020,36(21):8.
[2]金溪,王芳.基于CUDA架构的内涝一维/二维耦合模型求解方法[J].中国给水排水,2020,36(17):103.
JIN Xi,WANG Fang.Calculation Method of Urban Flooding One-dimensional/Two-dimensional Coupling Model Based on CUDA-based Parallel Implementation[J].China Water & Wastewater,2020,36(21):103.
[3]徐雷,吴正松,邵知宇,等.基于SWMM耦合模型的道路行泄通道设计方法与应用[J].中国给水排水,2021,37(1):114.
XU Lei,WU Zheng-song,SHAO Zhi-yu,et al.Design Method and Application of Roadway Drainage Path Based on Coupled Hydraulic SWMM Model[J].China Water & Wastewater,2021,37(21):114.
[4]邱健,孙全,张俊.九江市中心城区道路积水点改造思路及技术措施[J].中国给水排水,2022,38(4):6.
QIUJian,SUNQuan,ZHANGJun.Thoughts and Technical Measures for Reconstruction of Road Waterlogging Points in Downtown Jiujiang[J].China Water & Wastewater,2022,38(21):6.
[5]邵知宇,王菲,李霜,等.高精度道路交叉口流量分配算法及与SWMM集成[J].中国给水排水,2024,40(7):130.
SHAOZhi-yu,WANGFei,LIShuang,et al.High Accurate Intersection Flow Distribution Algorithm and Its Integration with SWMM[J].China Water & Wastewater,2024,40(21):130.
[6]金晓飞,郭帅,黄琼,等.基于YOLOv7算法的易涝区积水快速识别方法研究[J].中国给水排水,2024,40(9):123.
JINXiao-fei,GUOShuai,HUANGQiong,et al.A Method for Rapid Identification of Waterlogging in Flood-prone Area Based on YOLOv7[J].China Water & Wastewater,2024,40(21):123.
[7]钟炜,张俊鹏.NSGA-Ⅲ耦合的LID设施布局多目标优化设计[J].中国给水排水,2025,41(13):131.
ZHONGWei,ZHANGJun-peng.Multi-objective Optimization Design of LID Facility Layout with NSGA-Ⅲ Coupling[J].China Water & Wastewater,2025,41(21):131.
[8]任德福,李永坤,张书函,等.基于统计雨型的下凹桥区降雨量内涝预警阈值研究[J].中国给水排水,2025,41(21):155.
RENDe-fu,LIYong-kun,ZHANGShu-han,et al.Rainfall Waterlogging Warning Threshold in Lower Concave Bridge Area Based on Statistical Rainfall Pattern[J].China Water & Wastewater,2025,41(21):155.
[9]陈凯,王杰,翟月,等.基于来水组成模型的流域水环境调度研究[J].中国给水排水,2025,41(23):150.
CHENKai,WANGJie,ZHAIYue,et al.Basin Water Environment Scheduling Based on Water Component Model[J].China Water & Wastewater,2025,41(21):150.
[10]贾金睿,同玉,祁雷,等.基于GAST-SWMM耦合模型的LID设施布设优化[J].中国给水排水,2026,42(3):130.
JIAJinrui,TONGYu,QILei,et al.Optimization of LID Facility Layout Based on GAST-SWMM Coupling Model[J].China Water & Wastewater,2026,42(21):130.