光绪十三年(1887)八月黄河决于河南郑州,河督成孚等立即投入了抢险准备与堵口的工作。郑工历时一年又四个月,大致可分为前败后成两个阶段。前期的失败主要是由于资金不到位、备料不足、工程质量、河工腐败等原因所致;后期的成功主要得力于吴大对河工的整饬及购料方式的改进。 Thirteen years Guangxu (1887) in August the Yellow River in Zhengzhou, Henan Province, Governor He Weifu Fu immediately put into preparation for the rescue and blocking the work. Zheng workers last year and four months, can be divided into two stages before the defeat. The failure of the previous period was mainly due to the lack of funds, lack of materials, quality of works and the corruption of rivers and rivers. The success of the latter period was mainly attributable to the improvement of Wuhe’s rectification and purchase methods.