水利学报2017，Vol.48Issue(4)：467-472,6.DOI:10.13243/j.cnki.slxb.20160651
沙质河床推移质输沙率计算研究
Sandy bed-load transport
张罗号1
作者信息
- 1. 河海大学水利水电学院,江苏南京210098
- 折叠
摘要
Abstract
Calculation of bed-load transport is the key for both the research of sandy bed deformation and the engineering application.Based on the review of representative formulae used in China,it is realized that most of the existing bed-load transport formulae are not suitable for sandy riverbed because the accuracy of the measured data cannot be guaranteed.This paper addresses the exchange mechanism of bed-load and suspended sediment at riverbed layer;then recurs to sediment concentration vertical distribution formula extended to the riverbed,considering the impact of sediment particle size,flow intensity and hydraulic friction characteristics on the sandy bed-load transport intensity.Finally,a high reliability sandy bed-load transport rate formula has been derived.It shows that the measured data of natural sandy riverbed agree well with calculation and the formula can be used in the natural engineering calculation.关键词
沙质推移质/悬移质/床面输沙层/输沙率Key words
sandy bed-load/suspended sediment/bed layer/transport rate分类
建筑与水利引用本文复制引用
张罗号..沙质河床推移质输沙率计算研究[J].水利学报,2017,48(4):467-472,6.
