黄河下游堤防工程是抗御洪水的主要屏障。保护两岸土地面积约１２万ｋｍ２，人口 ７８００多万，有郑州、济南等重要城市和京广、津浦、陇海等铁路的动脉。任何一处堤防失事，其经济损失和政治影响都是大分巨大的。然而，由于黄河下游两岸堤防是在历代堤防和民埝的基础上多次加 The embankment project at the lower reaches of the Yellow River is the main barrier against floods. The cross-strait land area is about 120,000 km2 with a population of more than 78 million. There are important cities such as Zhengzhou and Jinan, and the artery of the Beijing-Guangzhou, Jinpu and Longhai railways. Any one embankment crashes, its economic losses and political influence are vastly different. However, as the embankments on both banks of the lower reaches of the Yellow River are added many times on the basis of dynasties and dams