1960年,黄河口形势之好为几十年内所仅见,但却被潮水沟劫夺而改道了.由于新河条件不比老河好,因而改道没发生明显的冲刷.接着新河也很快淤死.这次改道给出两个典型实例:一是不适当的改道不仅收不到良好效果,而且会起破坏性作用;二是放弃良好海域,会招致恶劣的结果. In 1960, the good situation in the Yellow River estuary was only seen within a few decades, but it was diverted and robbed by the tidal river. As the new river is no better than the old river, no significant erosion has occurred in the diversion. The diversion gives two typical examples: First, improper diversion will not only fail to achieve good results but will also have a destructive effect; second, giving up good waters will result in poor results.