三峡常年库区万州关刀碛河段河床演变
发布时间：2018-11-02 10:11
【摘要】：万州关刀碛河段宽窄相间,为三峡常年库区典型代表河段。依据大量实测资料,分析三峡水库蓄水后该河段河床演变情况。研究发现:三峡常年库区河段并不是全河段淤积,呈现"点"或"段"分散淤积分布特征;泥沙淤积分布和淤积强度与河道形态存在着密切的关系,淤积平面分布主要在宽阔河段、弯道凸岸下首、深槽等部位;河道宽谷段淤积强度相对较大,窄深段淤积强度较小,甚至存在冲刷。
[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.
【作者单位】： 重庆交通大学河海学院;
【分类号】：TV147
[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.
【作者单位】： 重庆交通大学河海学院;
【分类号】：TV147
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