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1概况2004年7月16～17日,澧河上游及漯河市普降大到暴雨,由于降雨强度大,降雨集中,加之澧河上游为山丘区,洪水汇流快、来势猛,致使澧河发生继2000年之后又一次超标准洪水,官寨水文站最大洪峰流量达5350m~3/s,何口水文站最大洪峰流量达3020m~3/s、最高水位72．36m,超过保证流量620m~3/s、超过保证水位1．96m,造成了澧河自罗湾分洪闸以上30多公里的河道堤防全线漫溢,致使堤面受到严重冲刷,堤顶多处裂缝,堤背坡或临水坡冲刷坍塌,局部造成了堤防决口。这次超标准洪水在澧河堤防上共造成张集等决口8处,长约591m,对河道堤防造成的破坏十分严重,损失巨大。
1 Overview From July 16 to July 17, 2004, the upper reaches of the Bahe River and Luohe City dropped greatly to heavy rainstorms. Due to the heavy rainfall intensity and heavy rainfall, and the upper reaches of the Bahe River being hills, After 2000, the flood exceeded the standard, the maximum peak flow of Guanzhai Hydrological Station reached 5350m ~ 3 / s, the maximum peak flow of Hekou Hydrological Station reached 3020m ~ 3 / s and the maximum water level was 72.36m, exceeding the guaranteed flow of 620m ~ 3 / s, exceeding the guaranteed water level of 1.96m, causing the embankment over the river more than 30 kilometers above the Luo River flood diversion gate to overflow completely, causing the embankment surface to be seriously washed away, cracks in the top of embankments, dike backwater or temporary water slope Scour collapse, resulting in a partial dyke burst. The ultra-standard floods caused a total of 8 breakdowns of Changji at the embankment of the Yonghe River, about 591m long, causing serious damage to the embankments of the river and causing huge losses.