汉代黄河下游的堤防.始见于《史记.河渠书》.春秋战国时期,黄河下游已普遍兴筑堤防.但各诸侯国以邻为壑,堤防不规则不合理.秦统一中国后,“决通川防,夷去险阻”,对堤防进行了全面整治.汉代进一步修成系统堤防,并不断增修石工,加高增厚.因此,汉代人称黄河大堤为金堤.西汉末,黄河 In the Han Dynasty, the embankment of the lower reaches of the Yellow River began to be seen in the Book of Historical Records and Canal Drifting .In the Spring and Autumn Period and the Warring States Period, the embankment was generally built in the lower reaches of the Yellow River. However, Han dynasty to further improve the system embankment, and continue to increase repair masonry, heightening thickened .Therefore, the Han Dynasty called the Yellow River embankment for the embankment .West Western Han Dynasty, the Yellow River