水利学报2025，Vol.56Issue(3)：317-327,11.DOI:10.13243/j.cnki.slxb.20240216
河流泥沙颗粒分析规程修编对悬移质级配分布测算的影响研究
Effect of the revision of technical standard for determination of sediment particle size on the estimation of particle size distribution
摘要
Abstract
The principles and methods for determining suspended sediment particle size in technical standards have undergone revision several times.Studying the impact of these revisions on the consistency of particle size distribu-tion data enhances our understanding of the reliability of the hydrological data and enriches the theory of river dy-namics.In order to investigate the effects of these technical standard revisions on the original hydrological data,this paper compares the calculation results of the old and new settling velocity formulas,highlighting a significant difference between the particle sizes obtained by the Sha Yuqing's formula and Goncharov's early formula.Utili-zing hydrological data from seven stations in the lower Yellow River from 1960 to 1985,the study re-evaluates the particle size distribution,characteristic grain size,and average settling velocity in the original data according to the particle size determination method previously and currently adopted by the technical standard.The degree of influ-ence of the standard change on data consistency was assessed,revealing that different settling velocity formulas af-fect the consistency of hydrological data,hampering fine study of sediment movement laws,particularly the water carrying capacity.In order to address issues arising from technical standard revisions,the study proposes a polyno-mial regression-based method for particle size distribution conversion,which demonstrates high fitting accuracy.In the last part of this paper,the differences in the calculation results of the Goncharov's early formula and the Sha Yuqing's formula with temperature variations are studied and compared with those derived from Zhang Ruijin's for-mula.The results found that the change of viscous coefficient caused by variations in temperature has the most pro-nounced effect on the sediment settling velocity calculated by Zhang Ruijin's formula,which is in line with the basic concept of sediment settling the best.关键词
泥沙颗粒分析/规程修编/黄河/级配/沉速公式Key words
determination of sediment particle size/technical standard revision/the Yellow River/particle size distribution/settling velocity formula分类
建筑与水利引用本文复制引用
杨润祎,张红武,朱金峰..河流泥沙颗粒分析规程修编对悬移质级配分布测算的影响研究[J].水利学报,2025,56(3):317-327,11.基金项目
国家重点研发计划项目(2016YFC0402500) （2016YFC0402500）
国家自然科学基金青年项目(52009145) （52009145）
鄂尔多斯水利科技重点项目(20232000090) （20232000090）
