论文部分内容阅读
大朝山水电站拦河坝溢洪表孔采用宽尾墩+戽式消力池联合消能工,设计单位经多年潜心研究,在百米级碾压混凝土坝、大单宽流量条件下采用台阶式溢流坝面,经第一次原型观测试验,验证了模型试验结论,并发现了水舌下缘与台阶接触带底流速沿程不变、水舌底部掺气浓度沿程增加的现象,这对今后同类工程设计提供了极具参考价值的工程应用实例。文章简略介绍了表孔溢流面结构变更的提出、模型、原型试验结果,以及采用台阶溢流坝面所带来的效益等。
Dachaoshan Hydropower Station spillway spillway using wide tail pier + 消 combined pool dissipator, the design unit after years of painstaking research, in the one hundred meters RCC dam, large single wide flow conditions using step overflow Dam surface, the first prototype observation test to verify the model test results and found that the lower edge of the tongue contact with the step bottom flow rate unchanged, the bottom of the aeration concentration increased at the bottom of the phenomenon, which for the future Similar engineering design provides a very valuable example of engineering applications. The article briefly introduces the proposed structural changes of the surface of spillway, the model, the prototype test results, as well as the benefits of using step overflow dam surface.