三峡工程泥沙研究进展综述

三峡工程泥沙研究工作从１９５８年全面开展至今已４０多年，长江科学院继续就与技术设计有关的坝区库区泥沙问题开展研究。长江科学院近两年来对三峡工程库区和坝区泥沙问题进行了大量研究。研究结果表明，金沙江和嘉陵江来沙量占长江上游来沙量的８３％，溪洛渡、向家坝和亭子口水库建成后，可使三峡水库泥沙淤积达到了初步平衡的时间推迟。三峡工程通航建筑物引航道的防淤清淤措施研究表明，枢纽运用初期引航道泥沙淤积物可采用机

Progress in sediment research of TGP

Sediment research of TGP has been carried out for more than 40 years since 1958.This paper briefly describes the sediment research work of Yangtze River Scientific Research Institute in the reservoir area and damsite area of TGP in recent 2 years.The research results demonstrate that sediment coming form Jinsha river and Jialing river reaches 83% of the total sediment at TGP.The completion of Xiluodu,Xiangjiaba and Tingzikou reservoir will postpone the initial sediment balance time in TGP reservoir.The research on the measures of sediment prevention and clearance in approach channels of TGP's navigation structures demonstrates that in initial operation period of the project,the sediment in approach channels can be cleared by machinery,in future operation period,the sediment outside the entrances of the upper and lower approach channels still need be cleared by machinery while the sediment within the approach channel should be cleared by joint measures of flushing and mechanical dredging.A diversion dike should be constructed in front of the shiplift to facilitate diverting flow to flush the sediment and eliminate unfavorable influence of water surface fluctuation on the operation of the shiplift.