水利学报2025，Vol.56Issue(1)：63-72,10.DOI:10.13243/j.cnki.slxb.20240170
黄河下游河道摩阻计算方法研究
Research on the calculation method of frictional resistance in the lower reaches of the Yellow River
摘要
Abstract
Determining resistance of moving bed is one of the most challenging topics in the field of water conser-vancy,as it plays an important role in the simulating flood evolution in alluvial channels and calculating riverbed e-rosion and sedimentation.Early scholars such as Chien,based on the results of Einstein and Barbarossa,further plotted the relationship between the hydraulic parameters of sand particles ψ and the friction parameter A of the Manning-Strickle roughness formula,and established the friction curve ψ-A for the lower Yellow River.On the basis of supplementing measured data and analysis,Ma Rui unified the variation pattern after ψ＜0.4 and the origi-nal curve,which has improved its academic and practical value.This article combines typical data and new experi-mental data,and based on the physical graph of'as the water flow intensity increases,the bed shape develops from a static flat bed to sand ridges and ridges,and then to a dynamic flat bed and reverse wave'.The results present the actual situation where sand wave resistance does not form in a static flat bed state,resulting in low water flow resistance.It revealed that as the water flow intensity increased from small to large,the entire process of static flat bed,sand ripple,sand wave development,attenuation to dynamic flat bed and even retrograde sand wave would appear on the bed surface in sequence.The verification results using 2450 sets of measured data from the lower reaches of the Yellow River show that the water depth calculated by the friction correction curve method in this paper is quite similar to the measured values,with a correlation coefficient of 0.872 and a relative error of only 16.3％.On this basis,using Zhang's velocity distribution formula to replace the logarithmic velocity distribution formula not only avoids the trouble of multiple trial calculations with correction parameters,but also overcomes the inherent defect of the logarithmic formula that is prone to unreasonable numerical values in the near bottom flow re-gion,further improving the calculation accuracy and practical value.关键词
水流阻力/黄河下游/糙率/摩阻参数/摩阻曲线/水力参变数/床面形态Key words
flow resistance/the lower Yellow River/roughness/friction parameter/friction curve/hydraulic parameter/bed surface morphology分类
建筑与水利引用本文复制引用
侯琳,张红武..黄河下游河道摩阻计算方法研究[J].水利学报,2025,56(1):63-72,10.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）
