一九四七年,山东人民已经对黄河进行了艰苦的斗争,取得了胜利。一九四八年的治黄斗争是更严重更紧张的经验。当年二月,山东黄河下游发生几十年来最大的一次凌汎。所谓凌汎,是每年开春时黄河冰冻化水的一种特殊水灾。那时上游已经开了冻,但是下游天还冷,靠近海口的河上冰冻未开,结果上游大块冰冻淌下来,到下游淌不开了,就很快的堵起了一段段的冰坝冰山,河里的水给挡着,流不下去了,愈涨愈高,黄河大堤受到了强大的压力,每一处都可能出漏子,酿成决口的危险。因为凌汎很 In 1947, the people of Shandong had already strenuously struggled against the Yellow River and won victory. The rule of law in 1948 is a more serious and tense experience. In February of that year, the largest flood in the lower reaches of the Yellow River in Shandong took place in decades. The so-called Ling Pan is a special flood disaster of the Yellow River frozen water every spring. At that time, the upper reaches had already opened a cold, but the weather in the lower reaches was still cold. The ice on the river near Haikou was not frozen. As a result, large chunks of ice flowed down to the downstream, which quickly blocked a section of Bingba iceberg , The water in the river was blocked, and the flow did not go down. The higher the heavens, the stronger the pressure was on the Yellow River embankment. Everywhere, there was a danger of a leak. Because Ling Pan very