黄河内蒙河段自然情况下冰期来水呈一退水趋势,流凌封河时河道流量多在400秒立米左右,故河槽蓄水较少。解冻开河时,槽蓄水量自上而下逐段释放加大汇成凌峰,故多呈武开河形势,凌汛灾害年年发生,较大的平均两年一次,防凌问题非常突出。1968年上游刘家峡等水库修建后,使冰期下 During the ice age, the incoming water of the Yellow River Inner Mongolia reaches a receding trend under natural conditions. The flow of the river in the Linglinghe River is more or less 400 meters in length, so there is less water storage in the riverbed. When the river was thawed, the storage volume of the trough was released from top to bottom and gradually enlarged to form a peak at Wuhui River. Therefore, the situation of Wu Kai River was mostly occurring. The flood disaster occurred annually and the average was once every two years. The problem of anti-flood protection was outstanding. After the reservoir was constructed in 1968, such as Liujiaxia, so that the ice age