摘要
基于霍顿(Horton)下渗和有限体积法,建立了考虑动态下渗的一二维耦合水动力学模型,并选择海河流域漳卫河系与大名泛区联合防洪体系作为典型应用区域,利用典型场次洪水对河道模型进行了率定和验证,同时探讨了下渗对于河道行洪、蓄滞洪区分洪以及洪水演进过程的影响。结果表明:考虑动态下渗的河道模型具有较高模拟精度,3场典型洪水洪峰误差都在10%以内;河道下渗会明显推迟蓄滞洪区的启用时间,并减小分洪流量和洪水总量;蓄滞洪区下渗对分洪过程影响较小,但会加快蓄滞洪区的退水速度。
A 1 D-2 D coupled hydrodynamic model considering the dynamic infiltration was developed based on the Horton infiltration formula and finite volume method. It was applied in the Zhangwei River system and Daming flood storage-detention area in the Haihe River Basin. The river model was calibrated and verified by using typical floods. At the same time, the influence of infiltration on flood discharge in river, flood diversion in the flood storage-detention area and flood evolution process were discussed. The results show that the river model considering dynamic infiltration has high simulation accuracy, and the peak error of three typical floods is within 10%. River infiltration will obviously delay the start-up time of the flood storage-detention area, and reduce the flood diversion flow and total amount. Infiltration in the flood storage-detention area has little effect on the flood diversion process, but it will accelerate the speed of water withdrawal in the flood storage-detention area.
作者
吴滨滨
喻海军
穆杰
马建明
石亮
WU Binbin;YU Haijun;MU Jie;MA Jianming;SHI Liang(China Institute of Water Resources and Hydropower Research,Beijing 100038,China;Research Center on Flood and Drought Disaster Reduction of the Ministry of Water Resources,Beijing 100038,China;Beijing Zhongke Wisdom Water Technology Co.,Ltd,Beijing 100036,China)
出处
《水资源保护》
CAS
CSCD
北大核心
2019年第6期68-75,共8页
Water Resources Protection
基金
国家重点研发计划(2017YFC1502706)
北京市自然科学基金重点项目(8181001)
固原海绵城市建设及运营关键技术研究(SCHM-2018)
关键词
洪水模拟
一二维耦合
蓄滞洪区
下渗
海河流域
flood simulation
1D-2D coupling
flood storage-detention area
infiltration
Haihe River Basin