掺气减蚀在白莲崖泄洪隧洞中的应用  

The application of cavitation resistant aerator on bailianya dam tunnel

作　　者：沈敏[1] 

机构地区：[1]安徽省淮委水利科学研究院,安徽蚌埠233000

出　　处：《武汉工业学院学报》2010年第4期78-82,共5页Journal of Wuhan Polytechnic University

摘　　要：以白莲崖泄洪隧洞为对象,分析其气蚀产生原因并提出相应应对措施,利用掺气减蚀形成掺气水流保护区以达到避免气蚀的效果。经过泄洪隧洞单体掺气模型试验资料分析,提出采用设两级掺气坎的底版掺气减蚀方案,且为了保护水流边避明流洞进口设侧突扩掺气槽,以进一步完善减蚀的效果。并为该工程选择了合理型式、尺寸的掺气坎,提出了合理建议。Based on Bailianya dam flood-discharge tunnel,the paper analyzes the reasons of cavitation damage and advances some corresponding measures to avoid it with air entrainment to alleviate cavitations.After test of monomeric aerated model of tunnels,the locating two aerator at the bottom plan is proposed,and air entrainment groove at the free flow import to protect side wall is set.Then right type and size aeration step for the project are chosen,and reasonable suggestions are given.It indicates that aeration is the stable measure to solve the anti-cavitation destruction of the free flow tunnel.

关 键 词：泄洪隧道 气蚀破坏 气化特征 掺气减蚀 

分 类 号：TV651.1[水利工程—水利水电工程]