冲积河流河型判别方法研究

Study on Discrimination of River Pattern for Alluvial River

分析了河流系统及河流自动调整作用,提出了冲积河流河型成因的河流自动调整作用程度理论假说及挟沙水流系统、河床形态系统河型判别式,在黄河下游6河段及汉江河段上采用河流模糊等价矩阵聚类方法验证建立的理论及判别式,结果表明该假说和判别式正确,河道挟沙水流系统与河床形态系统对河型形成作用等同。

This paper analyzes river system and river automatic adjustment behavior. The theory hypothesis of river automatic adjustment behavior for the cause of alluvial river pattern and the diseriminant of sediment-laden flow system and river bed form system of river pattern are proposed. Taking Liuhe segment in the downstream of the Yellow River and Jianghan river segment for an example, the established theory and river pattern diseriminant are validated by the fuzzy equivalent matrix cluster method. The results show that the established theory and river pattern discriminant are correct; the influence of river sediment-laden flow system and river bed form system on formation of river pattern is equivalent.