三峡水库蓄水10 a来,泥沙淤积量仅为预测值的4成,这将有效保障水库综合效益的充分发挥和使用寿命的延长。泥沙淤积问题是水库建设中的世界性难题。早在三峡工程论证时就曾有人担忧,水库蓄水后,水库淤积与长期使用、变动回水区航道港口泥沙淤积,特别是位于水库回水末端的重庆 After the Three Gorges Reservoir has been stored for 10 years, the sedimentation amount is only 40% of the predicted value, which will effectively ensure the full utilization of reservoirs and prolong the service life. Sedimentation problem is a worldwide problem in reservoir construction. As early as the Demonstration of the Three Gorges Project had been worried about after the reservoir impoundment, reservoir siltation and long-term use, changes in backwater silting sediment channel port, especially in the back of the reservoir back to Chongqing