雨水口泄流计算对城市洪涝模拟结果影响研究

被引:12
|
作者
朱呈浩 [1 ]
夏军强 [1 ]
周美蓉 [1 ]
侯精明 [2 ]
机构
[1] 武汉大学水资源与水电工程科学国家重点实验室
[2] 西安理工大学水利水电学院
关键词
城市洪涝; 地表径流; 雨水口泄流; 洪涝模型; 洼地积水深度;
D O I
暂无
中图分类号
TU992 [排水工程(沟渠工程、下水道工程)]; TV135.2 [泄水建筑物水力学];
学科分类号
0815 ;
摘要
雨水口可将地表径流输送至排水管网,是城市洪涝治理中的关键因素。为充分掌握雨水口泄流机理,本文总结了泄流试验研究的主要成果,比较了不同泄流计算方法的优缺点及适用范围;通过编译生成SWMM动态链接库文件(DLL),构建了改进泄流计算的城市雨洪模型;以西安市沣西新城为研究对象,定量分析了不同泄流计算方法对汇水区内雨水口泄流量及洼地积水深度的影响。结果表明:典型汇水区内采用不同泄流计算方法模拟得到的泄流量占降雨总量的38%~48%;泄流公式中流量系数18%的差异会在洼地积水深度结果中放大至55%;研究区各汇水区内因雨水口泄流能力不足而导致的最大洼地积水深度在0.1~0.6 m之间。研究成果有助于深化对雨水口泄流过程的认识,为城市防洪减灾提供技术支持。
引用
收藏
页码:75 / 86
页数:12
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