河湾副流横向输沙问题的研究-《郑州大学学报(工学版)》

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关键词:: 河湾副流的横向输沙计算; 对于研究河道横向演变及其变形规律具有很大的实际意义。本文从分析河湾副流横向流速沿水深分布和含沙量沿垂线分布的规律出发; 先后得出单位面积上横向输沙率沿水深分布的表达式及单宽横向输沙率的计算公式; 而且还进一步对上、下两部分的横向输沙率进行了讨论; 其研究与初步验证及分析结果颇为一致。此外; 文中给出的含沙量相对分布公式(4)及绝对量分布式(10); 不仅克服了经典公式的一系列理论缺陷; 而且同多沙河流的实测资料也较为符合; 颇具有独到之处。

Abstract:: The horizontal sand loss computing of the deputy flow of the river bay is of great practical significance for studying the horizontal evolution of the river and its deformation. This article starts from the laws of deep distribution of water in the river bay side of the water along the water deep distribution and sand content along the vertical line. It has concluded that the expression formula of the horizontal sand loss rate of the unit area along the water depth and the single -wide and horizontal sand loss rate was discussed. It also further discussed the horizontal sand loss rate of the upper and lower parts. The research and preliminary verification and analysis results were quite consistent. In addition, the relative distribution formulas given in the article (4) and the absolute distribution formula (10) not only overcome a series of theoretical defects of the classic formula, but also have more consistency with the measured data of the Dorsha River, which is quite unique.