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北围堤系花园口枢纽工程之左侧围堤,1960年建成。自1963年枢纽工程闭闸破坝泄洪后,此堤又兼负着控河导流作用,一旦溃决失事,不仅危及郑州市工农业供水和原阳县滩区人民生命财产安全,而且将会导致引溜夺河,顺堤行洪。彼时势必造成老工失控,新险犹生,危及堤防安全的严重局面。因此,固守北围堤具有十分重要的意义。一、河势与险情当1983年8月3日花园口站8370米~3/秒洪峰流量回落后,改变了京广铁桥以下河势南大北小的局面,北股河流量由原占全河流量的
North Wai embankment Huayuankou project on the left side of the dike, completed in 1960. Since the closure project of flood control and dam breaking in 1963, this dyke also has the function of controlling river diversion. Once the accident is ruptured, it not only endangers the water supply for industry and agriculture and the life and property of the people in the beach area of Yuanyang, but also will lead to Lead cited the river, along the embankment flood. That will inevitably result in uncontrollable old workers, new dangers and serious danger to the safety of embankments. Therefore, sticking to the North embankment is of great significance. First, the river and danger When August 3, 1983 Huayuankou Station 8370 m ~ 3 / s Hongfeng flow down, changed the Jing-Guang Railroad Bridge following the South Dabei small situation, the North Unit River flow from the original accounted for River flow