三峡水库变动回水区泥沙冲淤特性分析

Characteristics of scouring and deposition in fluctuating backwater region of the Three Gorges reservoir

依据三峡蓄水后变动回水区的实测资料,初步分析了三峡水库175m正常蓄水下变动回水区输沙过程及该河段冲淤特性,揭示了航道调整的内在机理,总结了水沙条件变化和河段冲淤规律。结果可为减少变动回水区的泥沙淤积及淤沙浅滩的治理提供科学依据。

According to the measured data in fluctuating backwater region of the Three Gorges reservoir,the sediment transport and the scouring and deposition characteristics under the normal storage water level 175 m condition were primarily analyzed in this paper.The inherent mechanism of channel adjustment was revealed,then the changes of water and sediment condition and the regularity of scouring and deposition in this reach were summarized.The results can provide scientific basis for future navigation channel regulation and sediment transport research.