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黄河下游发生在1855年的一次大改道,对上下游河道带来了深远的影响。直到目前为止,黄河下游河床演变中的某些特点,还是与铜瓦厢决口以后的变化有密切联系。本文将从(1)决口以后下游泛区的河道变化及其影响,(2)黄河夺大清河后大清河河道的变化,(3)决口对上游河道的作用,(4)近百年来大堤决口地点的地理分布特征及其意义等四个方面,来说明古今的联系,以及如何在黄河下游的河道治理工作中,吸取河道历史演变过程中的一些经验教训。
A major diversion took place in the lower reaches of the Yellow River in 1855, bringing far-reaching impacts to the upper and lower reaches of the river. Until now, some characteristics of the evolution of the riverbed in the lower Yellow River have been closely linked with changes after the copper-tile junction. (2) the change of the Daqing River after the Da-Qing River was taken over by the Yellow River, (3) the effect of the ripple on the upper reaches of the river, (4) the break of the embankment over the past 100 years The geographical distribution of the location and its significance, etc., to illustrate the relationship between ancient and modern, as well as how to draw lessons from the historical evolution of the river course in the course of channel management in the lower Yellow River.