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首页> 外文会议>International Symposium on Flood Defence vol.1; 20020910-13; Beijing(CN) >Influence of estuarine reclamation on flood control capacity of Shtenzhen River regulation project
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Influence of estuarine reclamation on flood control capacity of Shtenzhen River regulation project

机译：河口围垦对深圳镇河整治工程防洪能力的影响

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摘要

For study on the possible influence of estuarine reclamation upon the flood control capacity of the Shenzhen River Regulation Project, a 2-D finite difference hydrodynamic model in an orthogonal boundary-fitting curvilinear coordinate is developed and applied to the integral river-estuary-bay water area of Shenzhen region. The hydrodynamic effects of flooding water into swamps and creeks of a large-scale mangrove forest and the momentum transfermechanism at the interface between main channel and flood plain flows are taken into account. The Manning roughness coefficients and the depth averaged eddy viscosity coefficients in the mangrove swamp and creek and in the compound channel are treated with different methods. Two test cases demonstrate that the present model is efficient and applicable. The detrimental effect of the estuarine reclamation is evaluated. The optimum scheme to excavate the range of reclamation is proposed on basis of the flood defence requirements of both Shenzhen and Hong Kong.
机译：为了研究河口围垦对深圳河整治工程防洪能力的可能影响，建立了正交边界拟合曲线坐标系中的二维有限差分水动力模型，并将其应用于河口湾整体水地区的深圳地区。考虑了洪水冲入大型红树林的沼泽和小溪的水动力效应以及在主要河道和洪水平原流之间的界面处的动量传递机制。用不同的方法处理红树林沼泽和小溪以及复合河道中的曼宁粗糙度系数和深度平均涡流粘度系数。两个测试案例证明了该模型是有效且适用的。评估河口填海的不利影响。根据深圳和香港的防洪要求，提出了开垦填海范围的最佳方案。

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