吉音水利枢纽旋流泄洪洞起旋室体型优化试验研究  

Experimental study on shape optimization of vortex chamber for silo discharge tunnel of Jiyin Water Control Project

作　　者：张文远[1] 张东[1] 杨帆[1] 章晋雄[1] 

机构地区：[1]中国水利水电科学研究院,北京100038

出　　处：《水利水电技术》2016年第4期67-69,74,共4页Water Resources and Hydropower Engineering

基　　金：国家自然科学基金项目(51279216)

摘　　要：通过1∶30的水工模型对吉音水利枢纽竖井旋流泄洪洞起旋室的体型进行了优化研究,分析了起旋室局部体型修改对起旋室与旋流洞连接部位压力特性的影响。研究结果表明:在起旋室内导流坎末端采用削坡和采用1∶5收缩过渡体型与旋流洞相接体型,能有效避免过渡断面负压的产生和防止空蚀破坏。本研究成果对相关工程设计具有一定的指导作用。Through the hydraulic mode of 1 ∶ 30,a study is made on the shape optimization of the vortex chamber for the silo discharge tunnel of Jiyin Water Control Project,in which the impact from the modification of the local shape of the vortex chamber on the pressure characteristics at the location of the connection to the silo discharge tunnel is analyzed. The study result shows that the occurent of the negative pressure from the transition cross section can be effectively avoided along with the prevention of the relevant cavitation damage,if the end of the diversion sill inside of the vortex chamber is slope-cutted and the shape of the transition corss-section with the constriction ratio of 1 ∶ 5 is connected to the vortex chamber. This study has a certain guiding effect for the relevant engineering design.

关 键 词：吉音水利枢纽 竖井 旋流消能泄洪洞 水力特性 

分 类 号：TV135.2[水利工程—水力学及河流动力学]