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.
出处
《武汉大学学报（工学版）》
CAS
CSCD
北大核心
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)
关键词
金沙江
建库
重庆河段
泥沙淤积
数学模型
Jinsha River
construction of reservoir
Chongqing Reach
sediment deposition
mathematic model
