北江下游北江大堤河段河道演变趋势分析

A Analysis on Fluvial Processes in the Great Beijiang Levee's Reaches of the Beijiang River

在分析北江大堤河段的来水来沙变化的基础上,对该河段1965、1970、1975、1987、1990及1999年实测河道地形进行分析计算,结合该河段石角、大塘、芦苞、三水及马口等站水位一流量关系变化,综合分析该河段的河床演变规律,河床演变的速度及各河段的冲淤变化等.

According to the analysis on changes of water and sand capacity in the reaches of the Beijiang Levee, the practical topographic reconnaissances for watercourse of this reach in 1965, 1970, 1975, 1987, 1990 and 1999 have been analyzed and calculated. With combination of stage-discharge curves of Shijiao, Lubao, Sanshui and Makou gauging stations, the regularity and velocity of fluvial processes, and scouring and silting capacity changes of each reach have been analyzed synthetically.