公元前四八六年,吴王夫差筑邗沟,引长江水向北流入淮河,其时淮口最低,长江水位高于淮河水位,入淮处曾建有北神埝(即今之节制闸,用以控制邗沟水位)。历史上这一情况曾延续有一千多年。据淮办编写的《淮河史话·评说汴渠》篇中介 In 486 BC, King Wu was poor at building ditch ditch, leading the Yangtze River water to flow into the Huaihe River to the north, when the Huai Kou was the lowest. The water level of the Yangtze River was higher than the water level of the Huaihe River, and there was the Northern Goddess To control the furrow water level). This situation has continued for more than a thousand years in history. According to Huai run in the “Huaihe dialect,” said the article canal intermediary