“黄河下游河道演变基本规律”研究综述

阐明了三门峡水库不同运用方式和出库水沙过程条件下各业径组泥沙在黄河下游河道纵向调整规律，提出主含沙洪水期宽浅河道的河床演变模型，并阐述了含含沙水流输送过程中水位急剧变化，汉量沿程增大异常现象产生的机理，分析了１８５５年黄河改走现河道１００我年来下淳河道纵剖面发育过程，指出上前下游河道尚未达到均衡纵剖面，人类活动造砀 水沙减少及其过程变化引起了河道萎缩，系统分析了干流水库调节水沙对其下游河道的影响，

Summary on "Basic Development Law and Prospect Prediction of the Lower Reaches of the Yellow River

This paper has expounded the various operation programmes of Sanmenxia reservior and the regulation laws of sediment with different sizes along the river in the Yellow River lower reaches under the process of the flow out of the reservior,described the element of the abnormal phenomena of current with high sediment content in its flowing process, ie., dramatically water level variation,discharge increasing along the flow course,and the classification and finess of sediment granular along the flow course,put forward the model of the evolution of river bed of high sediment-laden flow in wide and shallow channel,estimated the development process of the lower reaches of the Yellow River channel during the last over 100 years since the river changed to the present course in 1855 and pointed out that up to now the Yellow River lower reaches has not yet reached the balance vertical section,systematically analysed the influences of the water and sedi ment regulation through the reserviors in the main stem on the course of the lower reaches, and pointed out that the influence extent is largely on the factors of water and sediment flow to the reserviors, operation model, and siltation and erosion in the river channel, and others.