水利水电科技进展2011，Vol.31Issue(6)：7-9,90,4.DOI:10.3880/j.issn.1006-7647.2011.06.002
分汊河道分流比估算方法
Methods for evaluating flow diversion ratio of bifurcated rivers/
摘要
Abstract
Based on the suspended sediment concentration in each branch being basically equal in the multi-branch river with steady riverbed and the momentums of the two branches keeping conservation along the right direction of the main river of an alluvial river, two convenient methods to estimate the diversion ratios of bifurcated rivers were derived, I.e., equal suspended sediment concentration method (ESSCM) and momentum conservation method (MCM). The flow diversion data of eight branch mouths in the Pearl River were validated by means of the above two methods. The results show that the flow diversion ratios calculated by ESSCM and MCM have averaged relative errors of 21 % and 6.4% respectively compared with the actual ones. The proposed two methods can be employed to estimate the flow diversion ratios of bifurcated rivers.关键词
分汊河道/分流比/等含沙量法/动量平衡法Key words
bifurcated river/ flow diversion ratio/ equal suspend sediment concentration method/ momentum conservation method分类
建筑与水利引用本文复制引用
童朝锋,严以新,孟艳秋,岳亮亮..分汊河道分流比估算方法[J].水利水电科技进展,2011,31(6):7-9,90,4.基金项目
国家自然科学基金(50709007) （50709007）
水文水资源与水利工程科学国家重点实验室基本科研业务费项目(2010585312) （2010585312）
河海大学中央高校基本科研业务费项目(2009B09614) （2009B09614）
水利部公益性行业科研专项(200701026) （200701026）
