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一、我国的工程实践对高水头泄水建筑物,如何避免或减轻空蚀破坏作用,是设计中很重要的问题,它关系到所设计的建筑物是否能安全运用,国内外因空蚀而导致建筑物的破坏不乏其例,为适应高速水流特点和防止空蚀破坏,人们从各个方面实践的结果,积累了不少成功的经验,具体措施归纳起来有:1.采取合理的建筑物体型,提高低压区的压力,2.采用高强度或抗空蚀性能的建筑材料,3.提高建筑物过水面平整度,4.设置掺气减蚀设施.
First, China’s engineering practice for high-head dredge buildings, how to avoid or reduce the role of cavitation damage is a very important issue in the design, it is related to the design of the building can be safely used at home and abroad due to cavitation caused There are many examples of the destruction of buildings. In order to adapt to the characteristics of high-speed water flow and prevent cavitation damage, people have accumulated a lot of successful experiences from all aspects of practical experience. The specific measures are summed up as follows: 1. Taking reasonable building type, Improve the pressure in the low pressure area, 2. Use high strength or anti-cavitation properties of building materials, 3. Improve the building surface water flatness, 4. Set aerated erosion facilities.