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1991年汛期,淮河入江水道自5月31日至8月25日连续行洪118天,宣泄淮河上中游来水444.68亿立方米,为确保淮河下游广大地区人民生命财产安全发挥了巨大作用。但是由于河道中存在诸多行水障碍,尤其是改道段大面积的阻水柴草,使得入江水道自尾渡至漫水公路水面曲线全面超过设计值,在三河闸下泄8900立方米每秒时,金湖站水位达11.69米,相当于设计行洪10000立方米每秒时的水位。入江水道上段在长时间、高水位的浸泡和冲刷下,出现了多处险情。当年入江水道除险
In the flood season of 1991, the Huaihe River waterway continued to flood for 118 days from May 31 to August 25 to vent 44.468 billion cubic meters of water from the upper and middle reaches of the Huaihe River, playing a significant role in ensuring the safety of people’s lives and property in the vast areas of the lower Huaihe River. However, due to the existence of a large number of water barriers in the river, especially in the diversion zone, the water resistance of large areas of water-proof straw makes the curve of the waterway from the stern of the waterway to the waterway completely exceed the designed value. When the water drains 8900 cubic meters per second Lake station water level of 11.69 meters, equivalent to the design flood 10000 cubic meters per second when the water level. In the upper reaches of the watercourse in a long time, high water soaking and erosion, there have been many dangerous situations. Year into the river diversion