1基本情况黄河东营河段位于黄河下游,是黄河进入渤海的过渡河段,河道全长12.178km,纵比降约为万分之一,河道比降较缓,排沙能力比较底,两岸堤距0.6~1.3km,河道最窄处572m(麻湾险工两岸堤距),是河道进入麻湾至利津王庄三十公里窄河道的咽喉,具有窄、弯、险、历次决口多的特点,特 1 Basic Conditions The Dongying reach of the Yellow River, located in the lower reaches of the Yellow River, is the transitional section of the Yellow River entering the Bohai Sea. The total length of the river is 12.178km, the vertical ratio is reduced to about one ten thousandth, the ratio of river channels is relatively slow, the sediment discharge capacity is relatively low, It is the throat of a narrow river of 30 kilometers from Mawan to Lijin Wangzhuang with a width of 0.6 ~ 1.3km and the narrowest of the river (572m at the margin of Mawan). It has the characteristics of narrow, special