黄河中游粗泥沙集中来源区界定研究中粗泥沙界限的确定  

Making Certain the Dividing Line of Coarse Sand in the Study on Definition of Coarse Sand Concentrated Coming Area in the Middle Yellow River

作　　者：徐建华[1] 高亚军[1] 陈志凌[1] 

机构地区：[1]黄河水利委员会水文局,河南郑州450004

出　　处：《中国水土保持》2006年第8期19-21,共3页Soil and Water Conservation in China

基　　金：黄河水利委员会治黄专项[黄规计(2004)197号]

摘　　要：针对黄河粗泥沙界限问题,介绍了粗泥沙界限0.05 mm的由来,利用下游河床质钻孔资料分不同时段研究主槽淤积物粒径组成,利用输沙率平衡法计算下游河道不同时段的区间淤积比和排沙比,利用小浪底水库运用以来下游河床质淤积物钻孔资料分析淤积物粒径变化。依据1960年以前天然情况下、对长系列资料分析结果显示、小浪底水库运用以来的黄河下游主槽淤积物中d≥0.10 mm的泥沙淤积特点,确定应以0.10 mm作为黄河中游粗泥沙集中来源区界定研究中的粗泥沙界限。The paper introduces the origin of 0.05 mm of coarse sand dividing line in the light of the dividing line of coarse sand of the Yellow River,studies the size composition of sediment on the main channel in different time intervals by using drill-hole data of bed material on the lower reaches,calculates the rate of silting and sediment delivery rate in different time intervals of the lower channel by using equilibrium method of solid discharge and analyzes the variations of particle size of sediment by using drill-hole data of bed material on the lower reaches since the operation of Xiaolangdi Reservoir.It decides to take 0.10 mm as the dividing line of coarse sand for the study based on the natural condition before 1960 and according to the results of analysis on long-term data and characteristics of d≥0.10 mm sedimentation on the main channel of the lower Yellow River since the operation of Xiaolangdi Reservoir.

关 键 词：粗泥沙 界限 集中来源区 黄河中游 

分 类 号：TV143[水利工程—水力学及河流动力学]