• 模型同时河床冲刷深度稳定级配进行计算

    The model can calculate scour depth of riverbed and armoring steady graduation simultaneously.

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  • 模型设计方法主要包括:如何合理选择模型河床沙质,如何确定进口断面加沙量和放水时间等。

    The design methods include how to select bed load and bed material within the suspended load and how to determine the feed of the model sand and the time of the experiment.

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  • 文章河床演变资料分析基础,采取“人工变形预测大范围动模型试验预测等手段研究世纪围涂工程实施堤外高滩的变化

    The paper studies the change of tideland after the century inning by method of "artificial transformation" forecast and moveable bed model based on the analysis of the bed evolution data.

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  • 该文采用具有自由水面河床应力计算三维数学模型分析桥墩群对河道水流影响

    A three-dimensional numerical model with free water surface and wall shear stress was used to analyze the water flow affected by piers.

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  • 通常疏浚工程中挖槽土方量计算模型河床横断面通过测量点的特殊断面,断面轮廓曲线假定为近似直线折线

    In calculation models of cutting volume for dredging project, the cross section is usually a special one through survey points, and the curve of the river bed is assumed to be a line or a polyline.

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  • 模型考虑均匀推移不平衡移,引入混合模式用于模拟河床组成的变化

    This model takes into account non-equilibrium transport of non-uniform bedload and introduces the mixed layer model to calculate the changes of bed material grain class.

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  • 数值实验表明,该模型正确地模拟山区河流复杂水流以及河床冲刷淤积过程

    The results show that the flow field and the process of riverbed erosion and deposition in mountain river can be simulated correctly by this method.

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  • 数值计算结果表明模型定性正确地模拟水流以及河床冲刷淤积过程

    The result shows that the flow field and the process of riverbed erosion and deposition can be simulated qualitatively by this method.

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  • 针对墩处河床局部冲刷复杂性,运用正动床物理模型较好预测桥墩附近河床局部冲刷,并获得了现场监测结果的验证。

    According to the local scouring around the pile foundation of the pylon, a normal movable-bed physical model test is conducted to predict the local scouring and is verified by the field measured data.

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  • 通过建立维水数学模型计算分析河道水位河床影响

    Through the establishment of two-dimensional mathematical model of flow and sediment, calculate and analyse the effects on river water level, flow field and riverbed erosion and deposition.

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  • 针对阳江抽水蓄能电站溢流坝具有水头坝址河床狭窄、坡度陡峭特点,通过水力模型试验研究优化了溢流坝及其消工体型,解决了溢流坝的消能问题。

    The upper reservoir overflow dam of Yangjiang pumped storage power station shows the characteristics of high waterhead, narrowing river bed in dam site and steep slope.

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  • 介绍了泥沙交换河床粗化计算模拟物理图案和长系列河床演变数学模型研究方法。

    The methods of simulating the physical patterns of sediment exchange and bed coarsening and establishing long series river-bed sediment accumulation mathematical model were also given.

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  • 首先建立了一维数学模型研究顺直河道的河床冲刷河床粗化过程

    ID numerical model is developed to simulate degradation and armoring process in alluvial channels.

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  • 采用平面二维水流泥沙数学模型计算赣江大堤南昌段堤线改线河段水流运动及河床淤的影响

    By using a 2-d sediment mathematical model, influences of riverside relocation of Nanchang reach of Ganjiang river on flow, scouring and silting were computed.

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  • 为了调整荆江河势预测三峡工程兴建荆江河势变化趋势,分阶段进行了上荆江实体模型河势调整试验和河床冲刷试验研究工作。

    In order to adjust Upper Jingjiang stretch fluvial regime and predict its change tendency after completion of TGP, a physical model study on Upper Jingjiang stretch was carried out at various stages.

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  • 结合这些泥沙计算方法及河床形态调整技术,作者提出一个准三维河流动力学模型

    Combining the computation of velocity field and sediment transportation with the adjusting technique of river geometry, a quasi_3D dynamic model for fluvial processes have been proposed.

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  • 通过选择有关参数,处理工程边界以及进口边界条件,用二河道数学模型计算所得河床变形趋势实测情况基本一致

    The trend of river bed deformation calculated by a plane 2-D numerical model of total sediment transport is in good agreement with the real conditions.

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  • 先后完成黄河花园口至东坝头河段1988年中水丰洪水“92.8”高含沙洪水验证试验结果表明,采用本文提出模型相似律进行模型设计,模型水流运动、泥沙运动及河床演变规律,原型相似。

    The test results of this model for the floods of 1988 and 1992 show that the flow pattern, the sediment movement and the channel deformation all conform very well with the field data of these floods.

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  • 先后完成黄河花园口至东坝头河段1988年中水丰洪水“92.8”高含沙洪水验证试验结果表明,采用本文提出模型相似律进行模型设计,模型水流运动、泥沙运动及河床演变规律,原型相似。

    The test results of this model for the floods of 1988 and 1992 show that the flow pattern, the sediment movement and the channel deformation all conform very well with the field data of these floods.

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