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本文研究了水电站枢纽坝区泥沙二维数模计算的各个方面。根据平面二维水深平均水沙运动方程组,考虑了悬移质及推移质的分组输移,并利用控制体积法离散各个方程,导得离散格式,用SIM-PLER程式求解耦合方程,并用一维泥沙数学模型的水沙计算成果作为进口边界条件。作为例子,作了金沙江某水电站枢纽两岸厂房方案电站运用50年的二维泥沙冲淤计算,得到坝前1100m范围内流场及泥沙淤积过程、淤积数量和淤积形态,其结果可供水电站可行性阶段工程设计参考。
This paper studies all aspects of the two-dimensional numerical simulation of silt in the dam site of a hydropower station. According to the equations of two-dimensional water-depth and average water and sediment movement, the transport of suspended matter and pluton was considered, and the discrete equations were discretized by control volume method. The coupled equations were solved by SIM-PLER and solved by one Sediment sediment mathematical model of water and sediment calculation results as import boundary conditions. As an example, a 50-year two-dimensional sediment scouring and silting calculation was carried out for 50 years plant layout of both sides of a Jinshajiang hydropower station. The flow field, sedimentation process, deposition amount and siltation pattern within 1100m of the dam were obtained. The results are available Hydropower Station Feasibility Stage Engineering Design Reference.