引用本文:杨静,黑鹏飞,张潆元,假冬冬,方红卫,冯金朝.大沽河河道整治的准三维数值模型[J].水利水运工程学报,2017,(3):25-32
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大沽河河道整治的准三维数值模型
杨静1, 黑鹏飞1, 张潆元1, 假冬冬2, 方红卫3, 冯金朝1
1.中央民族大学生命与环境科学学院，北京;2.南京水利科学研究院水文水资源与水利工程科学国家重点实验室;3.清华大学水沙科学与水利水电工程国家重点实验室，北京
摘要:
大沽河下游河道蜿蜒曲折，淤积严重，河流动力数学模型对于选择合理的防洪减淤及蓄水通航措施具有重要意义。采用准三维水动力模型、全三维泥沙动力和河床演变模型，建立了青岛大沽河三维河流动力学模型。模型通过静压假定降低了三维模型的计算量，同时也反映了水流垂向流速差异及其对河床冲淤的影响。模型验证结果表明，洪水位和输沙总量的计算结果合理，模型可用于大沽河口的洪水和泥沙输运规律研究，为大沽河河道整治中选择最优闸坝位置、堤防形态、橡胶坝宽度以及码头断面形态优化等提供建议，实现防洪减淤、蓄水通航的最大效益。
关键词:  大沽河  河道整治  准三维模型
DOI：
分类号:TV148
基金项目:国家水体污染控制与治理科技重大专项（2012ZX07505-005）
Application of quasi-3D hydrodynamic numerical model to channel regulation scheme for Dagu River
YANG Jing1, HEI Pengfei1, ZHANG Yingyuan1, JIA Dongdong2, FANG Hongwei3, FENG Jinchao1
1.College of Life and Environmental Sciences, Minzu University of China, Beijing;2.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering，Nanjing Hydraulic Research Institute，Nanjing;3.State Key Laboratory of Hydroscience and Engineering，Tsinghua University，Beijing
Abstract:
The Dagu River suffers from the fluvial process in the recent years. A numerical model can be used to minimize the fluvial and flood water levels, and to optimize the water storage and navigation conditions. In this study, a quasi-3D numerical hydrodynamic model and a 3D fluvial model are combined to simulate the hydrodynamic and fluvial processes. The quasi-3D numerical model for the river dynamics shows a great advantage comparing with the 3D numerical model in the computation efficiency while retaining the capability for simulating the vertical distribution of the flow and sediment. Model calibration results show that the model calculated results of the flood stage and total sediment runoff are reliable and reasonable, which can be further used to study the flood control and siltation reduction as well as sediment transport in the Dagu River. These simulation results can provide suggestions for the optimization of the location of the dam, the shape of the embankments, the width of the rubber dam and the optimization of the cross-section of the Dagu River in order to realize the maximum benefit of the flood control, siltation reduction and water storage for navigation.
Key words:  Dagu River  river regulation  quasi 3D numerical model
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