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1 卫河防洪工程现状及存在的问题近些年来,卫河河床淤积严重,行洪能力急剧降低,据1994年省豫北局和卫河处实测卫河淇门至老观咀淤积达到260万m~3,1996年卫河、淇河共产主义渠仅遭遇10年一遇至20年一遇洪水,合河和淇门就出现了历史最高水位。合河到卫辉洪峰传播时间通常为16h,而1996年达52h,延长了三倍多,造成“小流量、高水位、重灾害”的被动局面。据调查,这次洪水使1.9万hm~2耕地过水,1.33万hm~2农作物绝收,造成河道险工毁坏143处,损失惨重。从1996年洪水看卫河的防汛,防洪
1 Wei River flood control project status quo and existing problems In recent years, Wei River bed siltation serious, flood capacity decreased dramatically, according to the provincial Bureau of Henan North Bureau and the Weihe Wei River River in 1994 to the Department of Observations silting up to 2.6 million In 1996, the Wei River and Qihe communist channels encountered only one flood in 10 years to 20 years. Hehe and Qimen experienced the highest water level in history. Hehe to Weihui peak propagation time is usually 16h, and up to 52h in 1996, more than tripled, resulting in “small flow, high water level, heavy disaster ” passive situation. According to the survey, the flooding caused 19,000 hm 2 of farmland to pass water and the harvest of 133,000 hm 2 of crops, resulting in the destruction of 143 river courses and causing heavy losses. From the 1996 floods see Wei River flood control, flood control