中美技术标准下溢洪道设计对比分析

Contrastive analysis of spillway design under Chinese and American technical standards

溢洪道在水电站设计建设中是十分重要的水工建筑,结合国外某水电站溢洪道设计实例,采用中美技术标准分别对溢洪道设计中的泄流能力、挑流鼻坎射程、冲坑最大水垫深度等进行计算,并结合水工模型试验结果与中美技术标准下的理论计算结果进行比较分析。中美技术标准关于溢洪道设计的分析流程基本一致,除公式、参数的选择上存在差异,均是以理论计算为依据,最终水工模型试验进行校验复核,分析过程可为类似工程提供参考。

Spillway is a very important hydraulic structure in the construction and design of hydropower station.Combined with the spillway design example of a hydropower station abroad,the discharge capacity,trajectory distance and the maximum water scour depth are calculated in design of spillway by using Chinese and American technical standards,and the theoretical calculation results under Chinese and American technical standards are compared and analyzed with the hydraulic model test results.In general,the analysis process of spillway design in Chinese and American technical standards is basically the same except the differences in formula and parameter selection,all of which are based on theoretical calculation and checked and verified by adopting hydraulic model test,and the analysis process can provide reference for similar projects.