双江口溢洪道和放空洞掺气设施布设的水工模型试验研究  

Experimental Study on Shape Optimization of Aerator Type when Change of Declivity on Discharge Structures

作　　者：王川 马旭东[2] 潘露[3] WANG Chuan;MA Xu-dong;PAN Lu(Power China Chengdu Engineering Corporation Limited,Chengdu 610072,China;State Key Laboratory of Hydraulics and Mountain River Engineering,Sichuan University,Chengdu 610065,China;Sichuan Water Conservancy Collge,Chengdu 611231,China)

机构地区：[1]中国电建集团成都勘测设计研究院有限公司,四川成都610072 [2]四川大学水力学与山区河流开发保护国家重点实验室,四川成都610065 [3]四川水利职业技术学院,四川成都611231

出　　处：《水电能源科学》2022年第8期136-138,207,共4页Water Resources and Power

基　　金：国家自然科学基金项目(51809187)。

摘　　要：掺气减蚀是预防高流速泄水建筑物发生空蚀破坏的重要手段,良好的掺气效果及坎后流态是判别掺气设施体型优劣的两个重要指标。采用水工模型试验方法,研究了双江口水电站溢洪道、放空洞的掺气减蚀布置,在分析坎后流态影响因素的基础上,提出一种能保证掺气效果且具有良好坎后流态的掺气设施体型及底板衔接形式。结果表明,通过改变掺气设施坎高及上、下游底板衔接形式,调整抛射水舌与底板冲击角度,能形成稳定的通气空腔及良好的坎后流态。Aeration corrosion is an important means to prevent cavitation and damage of high velocity flow on discharge structures.The aeration effect and flow pattern are two important indexes for estimating shape optimization of aeration facilities.Hydraulic model test was used to study the aeration corrosion layout of the spillway and emptying tunnel in Shuangjiangkou Hydropower Station.Base on the influencing factor of the flow state,shape optimization of aeration facilities and baseplate conjuncture form were put forward,which can ensure the good effect of aerator and flow state.The results show that the stable cavity and good flow condition can be formed when change the height of aerator and baseplate conjuncture forms and adjust impact angles of jet flow and baseplate.

关 键 词：掺气减蚀 水流流态 体型优化 模型试验 

分 类 号：TV131.6[水利工程—水力学及河流动力学]