空蚀对水工建筑物的危害及其防止

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。

Damage of Cavitation on Hydaulic Structure and Its Prevention

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.