空蚀对水工建筑物的危害及其防止

Damage of Cavitation on Hydaulic Structure and Its Prevention

空蚀对建筑物的破坏性很大。本文从分析空蚀产生的原因、机理入手，详细阐述了常见的建筑物的空蚀现象和发生部位，并提出了相应的防治措施。

In this paper,the cause and mechanism that cavitation occurs are analysed,the cavitation phenomenon and the part where it often occurs are introduced,the following countermeasures are given to avoid it:(1)to design the rational shape of hydraulic structure;(2)to proprely control the unsmoothness of structure surface;(3)to blend air to the layer of water flow near wall by engineering measures;and (4)to prevent cavitation with the material having high cavitation-resisting feature.