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郑州黄河修防处管辖堤段共有险工四处,长约22.7公里,占堤线全长的70%左右。在这些险工堤段内,修有各种坝、垜399座,裹护工程围长21,448米。这些坝垜工程,多数已有几十年、上百年的历史(有的甚至已有240年之久),是随着靠河受溜情况不同、时间长短,经过多次改修、加固、抢险而逐渐形成起来的。因为它们所处部位不同,工程始建条件不同,抢险加固情况不同,基础强弱也不一样,不少坝垜的
Zhengzhou Yellow River Defense Division under the jurisdiction of embankment a total of around 4 workers, about 22.7 km, accounting for about 70% of the total embankment length. In these sections of dangerous fortifications, there are various types of dams and 垜 399 billets built, and the length of the bailing works is 21,448 meters. Most of these dam works have been carried out for several decades and hundreds of years (some even for 240 years). They are subject to different circumstances and different lengths of time. After several repairs, reinforcement and rescue work, Gradually formed. Because they are located in different parts of the project started to build different conditions, rescue and reinforcement of different situations, the strength of the foundation is not the same, many dam