大沽河河道整治的准三维数值模型

发布时间：2018-06-28 16:47

本文选题：大沽河 + 河道整治　；参考：《水利水运工程学报》2017年03期

【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。
[Abstract]:The lower reaches of the Dagu River are meandering and the deposition is serious. The dynamic mathematical model of the river is of great significance for the selection of reasonable measures for flood control and siltation reduction and water storage and navigation. Based on the quasi-three-dimensional hydrodynamic model, the full-3D sediment dynamics model and the riverbed evolution model, the three-dimensional river dynamics model of Dagu River in Qingdao is established. By static pressure assumption, the calculation amount of the 3D model is reduced, and the vertical flow velocity difference and its influence on the erosion and deposition of the riverbed are also reflected in the model. The results of model verification show that the calculation results of flood water level and sediment transport amount are reasonable, and the model can be used to study the flood and sediment transport law in Dagu estuary, and to select the optimal location of sluice dam and the form of dike in the regulation of Dagu River course. The width of the rubber dam and the optimization of the section shape of the wharf are suggested to realize the maximum benefit of flood control and siltation reduction and water storage and navigation.
【作者单位】：中央民族大学生命与环境科学学院;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;清华大学水沙科学与水利水电工程国家重点实验室;
【基金】：国家水体污染控制与治理科技重大专项(2012ZX07505-005)
【分类号】：TV85

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