清水江干流平寨航电枢纽泄水闸断面模型试验

低水头泄水建筑物的消能防冲是一个十分普遍的水力学问题,影响其消能工的水力特性及消能机理的因素非常复杂,日前尚无成熟的理论方法解决这一问题。针对贵州省清水江梯级开发已建的水利枢纽水头低、单宽流量大的特点,对平寨泄水建筑物消能工进行水工断面模型试验。其成果不仅为平寨航电枢纽泄水闸布置方案的技术合理性提供了必要的依据,同时对开展同类问题的研究具有参考价值。

Section model test of Pingzhai navigation power junction sluice on stem stream of Qingshui river

In low water head outlet constructions,energy dissipation is a common hydraulic problem,which energy dissipation is less efficiency.The influencing factors about hydraulic characteristics and energy dissipation mechanism are very complicated,and there are no mature theories or methods to solve the problem.The thesis regards the characteristics of the low water head and large discharge per unit width of the navigation power junction on the Qingshui river as the research objects.By the hydraulic section model made in lab,the energy dissipated mechanism of the outlet constructions are discussed at first.It is proven the research results not only settle a necessary ground for the layout plan of Pingzhai navigation power junction sluice,but also be helpful for other similar projects.