金沙江建库对重庆河段泥沙淤积的影响  

Impact of construction of reservoirs at Jinsha River on sediment deposition at Chongqing Reach

作　　者：邓金运[1] 李义天[1] 陈建[1] 甘富万[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《武汉大学学报（工学版）》2006年第6期23-26,共4页Engineering Journal of Wuhan University

基　　金：国家973项目(2003CB415203);国家自然科学基金项目(05050920)

摘　　要：通过平面二维水沙数学模型,分析了金沙江建库前后重庆河段的泥沙淤积情况.结果表明,金沙江无库情况下,重庆河段在水库运用初期出现累积性淤积,随着水库运行时间增加,部分浅滩河段可能产生碍航问题;金沙江建库后,整个重庆河段长江干流呈现冲刷趋势,但支流金沙碛河段淤积情况和上游无库时差别不大.The impacts on the sediment deposition at Chongqing Reach before and after the construction of the reservoirs at the Jinsha River are studied by two-dimensional flow and sediment model. The results show that under the condition of no reservoirs at the Jinsha River, the accumulated sediment deposition will increase in the initial using period of the Three Gorges Reservoir; and navigation problems maybe occur in local shoals with the increase of the using time of the reservoir. Under the condition of construction of reservoirs at the Jinsha River, erosion will be occurred at the main channel of Chongqing Reach; but the sediment deposition at Jinshaqi shoal is similar with that under the condition of no reservoirs.

关 键 词：金沙江 建库 重庆河段 泥沙淤积 数学模型 

分 类 号：TV145.1[水利工程—水力学及河流动力学]