水利学报Issue(2)：190-196,7.DOI:10.13243/j.cnki.slxb.2015.02.008
考虑爬高效应的泥石流弯道超高公式
A modified debris-flow super-elevation formula with the run-up effect
摘要
Abstract
Debris flow exhibits a noticeable super-elevation when it passes through a meandering stream. Previous studies attributed the super-elevation completely to debris-flow centrifugal motion in bends of the stream and neglected the run-up effect on it. Assuming the super-elevation and run-up caused respectively by tangent and normal velocity components of debris flows along the bends, a new formula for calculating the super-elevation is derived from the combination of the traditional forced vortex equation and the veloci⁃ty head equation by virtue of geometric similar relationship between triangles of velocity vector and the curved channel. The total super-elevation is a function of flow velocity,ratio of internal and external curva⁃ture radiuses, and bank inclination angle. The new formula is applicable to the wide curved channel of which turning angle is less than 60° . The relative error between the calculated and field or experimental measured values is less than 17%,which is acceptable for practical purpose.关键词
弯道超高/爬高/泥石流/流速Key words
super-elevation/run-up/debris flow/velocity分类
农业科技引用本文复制引用
赵晋恒,胡凯衡,唐金波,李浦..考虑爬高效应的泥石流弯道超高公式[J].水利学报,2015,(2):190-196,7.基金项目
中国科学院重点部署项目（KZZD-EW-05-01）；国家自然科学基金重点项目（41030742）；国家自然科学基金面上项目 （）
