水库淤积是目前世界上水利水电建设中尚未解决的重大问题。近年来,国际大坝会议,国际灌溉排水会议,国际水力学会议以及许多国家都开始重视这一课题的研究。国外的研究工作主要侧重于泥沙运动规律和淤积观测,但进展不大。美国河道泥沙量每年约40亿吨,每年水库淤积量达12亿立米以上。苏联每年水土流失达500—600亿立米,水库淤积超过设计两倍以上。日本由于水库淤积,平均年蓄水量减少20%。在防止水库淤积方面,苏联主张加强洪水 Reservoir siltation is an unsolved major issue in the construction of water conservancy and hydropower in the world at present. In recent years, the International Conference on Dams, the International Conference on Irrigation and Drainage, the International Hydraulics Conference and many other countries have begun to pay attention to the research on this topic. Research abroad mainly focuses on the law of sediment movement and siltation observation, but little progress has been made. The annual amount of sediment in the U.S. channel is about 4 billion tons per year, with more than 1.2 billion cubic meters of sedimentation each year. The annual soil erosion in the Soviet Union amounts to 50 to 60 billion cubic meters and the sedimentation of reservoirs exceeds twice the design. Due to reservoir siltation in Japan, the average annual water storage capacity has been reduced by 20%. In preventing the deposition of reservoirs, the Soviet Union advocated intensifying floods