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去冬黄河封河以来,由于河床抬高,主河道淤积,封河水位比往年高出1m以上,有的河段冰面离堤顶仅0.7m;个别地段淘岸严重,如黄河南岸三盛公枢纽下游146m处,从封河前12月10日起即冲淘河岸,冲淘长350m,最近处距防洪大堤脚不足40m,险象环生.因此,给今年黄河开河带来许多不利因素.但是3月上旬末至中旬,受冷空气活动影响,黄河沿线气温下降4.2℃,黄河开河速度减慢,冰水释放分散,部分河段卡冰结坝,形成全线分段乱开的局面.
Since the closure of the Yellow River in winter, due to riverbed elevation, siltation of the main channel, sealing water level is over 1m higher than in previous years, and some of the ice surface is only 0.7m away from the top of the dike. In some areas, 146m downstream, starting from December 10 before closure of the river washed Tao Amoy, Chong Amoy 350m, the nearest flood control embankment less than 40m foot, risky. Therefore, to the Yellow River this year to bring many unfavorable factors, but in early March From mid to late, affected by the cold air activity, the temperature along the Yellow River dropped by 4.2 ℃. The Yellow River started to slow down and the ice water was released and dispersed.