一、概述 2000年6月下旬至7月15日,沙颍河流域气候异常多变,暴雨洪水频频发生,在不到一个月时间内,沙、澧河相继发生4次超标准洪水,泥河洼滞洪区7次进洪。尤其是“7·15”洪水,澧河出现了仅次于“75·8”的特大洪水,水势凶猛,洪峰高,官寨站6000m~3/s,远远超过了澧河3～5年的保证标准,造成澧河上游堤防普遍漫 I. Overview From late June to July 15, 2000, the climate in the Shaying River basin was unusually changeable. Rainstorms and floods occurred frequently. In less than a month, four floods occurred in the Shahe River and the Bahe River, Hung stag flood area 7 into the flood. Especially in the “July 15th” floods, there emerged the extraordinary flood next to “75.8” in Bahe, with a fierce flood and a high flood peak. Guanzhai Station stood at 6000m ~ 3 / s, far exceeding that of Bahe River for 3 ~ 5 years The guarantee standard, resulting in the general flood embankment Ba River