小山口水电站泄洪系统泄流能力计算

Calculation of Flow Capacity of Discharge of Flood Discharge System in Shankou Hydropower Station

泄洪系统是小山口水电站建筑物的重要组成部分,承担泄洪任务,由表孔及底孔组成,其最小结构尺寸由泄洪时的特征水位及所需要下泄的流量确定。针对泄洪系统进行水力学计算,确定满足最大泄流要求所需要的最小结构尺寸,并将其与物理模型试验结果进行对比。分析表明,在泄洪系统表孔和底孔采用水力学公式计算出的结果与模型试验结果存在微小的差异,并分析差异原因,其结果可以为类似工程水力学计算提供实践参考。

For flood discharge system of hydraulics calculation, determined to meet the maximum discharge flow requirements are needed for the minimum structure size, and compared those with the results of physical model test. Analysis shows that in flood discharge system table holes and bottom by hydraulic calculation result with model test results are tiny differences, analyzes the reasons of the differences, and the results can be provide practical reference for similar engineering hydraulics cal-culation.