我们伟大的祖国富饶辽阔,水力资源极为丰富。水力蕴藏量约5.8亿千瓦,居世界首位。目前,已开发利用的仅为总蕴藏量的2.5％。随着工、农业飞跃地发展,电的需用量与日俱增,为了满足社会主义建设的需要,必须充分地利用我国的能源资源,加速水力能源的开发利用。但是,在水电生产中,水轮机的泥沙磨损和气蚀破坏并影响水轮发电机组的安全、经济运行,使水轮机的寿命缩短;检修工期增长;检修材料和费用增 Our great motherland is vast and rich in water resources. Hydraulic reserves of about 580 million kilowatts, ranking first in the world. At present, only 2.5% of the total reserves have been developed and utilized. With the rapid development of industry and agriculture and the increasing demand for electricity, in order to meet the needs of socialist construction, we must make full use of our energy resources and speed up the development and utilization of hydropower. However, in hydropower production, the sediment abrasion and cavitation damage of hydraulic turbines affect the safety and economic operation of hydroelectric generating sets, shortening the service life of hydraulic turbines, increasing the maintenance period, increasing the cost of maintenance materials and expenses