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1985年汛期黄河雨洪水沙的基本特点是:伏汛雨水偏枯、秋汛雨水偏丰、水量偏少、沙量偏枯、峰次较少、峰值不高。整个汛期花园口站来水量为265亿米~3,输沙量6.8亿吨,较常年分别偏少2.1％和35.1％,平均含沙量25.7公斤/米~3,大于3000米~3/秒以上洪水共有5次。以九月中旬洪峰流量8100米~3/秒为最大,这次洪水在下游演进过程中,大部滩区进水。汛期中水流量持续时间较长,秋汛洪水较大,三门
The basic characteristics of the flood and flood in the Yellow River during the flood season in 1985 are: partial flooding of flood and flood season, overcast autumn rainwater, less amount of water, less dry season, less peak and low peak. The flood season Huayuankou station has a water volume of 26.5 billion m 3 and a sediment discharge of 680 million tons, 2.1% and 35.1% less than normal levels respectively. The average sediment concentration is 25.7 kg / m 3 and more than 3000 m 3 / s The above flood a total of 5 times. In mid-September flood peak flow of 8100 m ~ 3 / sec for the maximum, the flood in the downstream evolution process, most of the beach area into the water. The duration of flood water in the flood season is longer, the flood flood is larger, three