杨房沟水电站截流进占水力特性数值模拟分析

为分析比选杨房沟水电站截流工程进占方案,通过建立相关三维数值模型,采用水力模拟计算技术对单戗堤单向及双向立堵进占方式的水流条件进行了计算,并将单向立堵进占数值模拟计算结果与物理模型试验结果进行了对比分析。结果表明:三维数值模拟与试验结果较为吻合,计算结果偏于安全;同时指出在现场条件允许的情况下,双向立堵进占能够有效降低该工程截流难度。

3D numerical simulation of hydraulic characteristics during river closure and berm advancing of Yangfanggou Hydropower Station

To compare the river closure and berm advancing schemes of Yangfanggou Hydropower Station, the 3D hydraulic computational model was built to calculate the flow regime of one-direction and bi-directional advancing. The numerical simulation results of one-direction advancing were compared with physical model test results. The results of the three-dimensional numerical simulation were in good agreement with the results of physical model test, and the results of numerical simulation are proved to be conservative. In addition, it is pointed out that bi-directional advancing can effectively reduce the difficulty of river closure.