多沙河流河道冲淤计算数学模型在东庄工程设计中的应用

Mathematical model of scouring and sedimentation calculation for sediment-laden river channel used in design of Dongzhuang Project

东庄水利枢纽工程位于陕西省关中地区的泾河下游 ,泾河是黄河的二级支流 ,其下游汇入三门峡库区的渭河下游。在泾河上修建东庄水库 ,必须充分考虑水库的运用给渭河下游河道带来的冲淤影响。在东庄水利枢纽工程设计过程中 ,用多沙河流河道冲淤计算数学模型对水库下游河道进行了长系列水流、泥沙运动数值模拟 ,通过工程前后下游河道泥沙冲淤计算 ,预测工程运行对下游河道的冲淤影响 ,为工程优化设计提供分析依据。

WT5”BZ]The Dongzhuang Water Conservancy Complex Project is located on the downstream of the Jinghe River in Guanzhong Area of Shanxi Province. Jinghe River is a grade II tributary of the Yellow River and its downstream converges into the downstream of the Weihe River, which lies within the Sanmenxia Reservoir area. It is required to give a full consideration to the sedimentation effect on Weihe downstream river channel caused by the operation of Dongzhuang Reservoir, which is to be built on Jinghe River downstream. In the design procedure of the Dongzhuang Water Conservancy Complex Project, a long series numerical simulation for flow and sediment to the reservoir downstream river was conducted by using the mathematical model, which applies to the sedimentation calculation for sediment laden river channels. By calculation, the effect of the sediment movement on the downstream river channel for operation of the project was predicted, which provides an analysis basis for the optimum design of the project. [WT5HZ]