【摘要】：萬州關刀磧河段寬窄相間,為三峽常年庫區(qū)典型代表河段。依據(jù)大量實測資料,分析三峽水庫蓄水后該河段河床演變情況。研究發(fā)現(xiàn):三峽常年庫區(qū)河段并不是全河段淤積,呈現(xiàn)"點"或"段"分散淤積分布特征;泥沙淤積分布和淤積強度與河道形態(tài)存在著密切的關系,淤積平面分布主要在寬闊河段、彎道凸岸下首、深槽等部位;河道寬谷段淤積強度相對較大,窄深段淤積強度較小,甚至存在沖刷。
[Abstract]:Wanzhou Guandao moraine reach is a typical representative of the three Gorges reservoir area. Based on a large number of measured data, the river bed evolution of the three Gorges Reservoir is analyzed. It is found that the river reach of the three Gorges reservoir area is not the whole reach of siltation, showing the characteristics of "point" or "section" dispersed siltation distribution. The distribution and intensity of sediment deposition are closely related to the shape of the river channel. The silt plane distribution is mainly in the broad reach, the head of the curved bank, the deep channel and so on. The siltation intensity of the wide valley section is relatively large, the siltation intensity of the narrow and deep section is relatively small, and there is even scour.
【作者單位】： 重慶交通大學河海學院;
【分類號】：TV147

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