湖北省荆南四河堤防加固工程设计总结

湖北省荆南四河(松滋河、虎渡河、藕池河、调弦河)是长江洪水分入洞庭湖区的重要行洪通道,上受长江洪水的压力,下受洞庭湖区水位顶托,洪涝灾害多发。为确保荆南四河周边人民生命财产安全,"98"大水后开始全面加固,包括堤身加高培厚、堤身隐患处理、护坡护岸、堤基渗流控制、穿堤建筑物加固等工程措施,重点介绍了拼装式防洪墙、生态护坡等一些新技术新工艺。工程实践表明,加固后的堤防近年险情明显减少,全面提升了荆南四河堤防防洪能力。

Design and summary of dike reinforcement works for four branch-out rivers of Jingjiang River,Hubei Province

The four branch-out rivers, Songzi River, Hudu River, Ouchi River and Tiaoxian River, from the Jiangjiang River to Dongting Lake in the south area of Changjiang River, are important flood diverted passages of the Jingjiang River. Due to the combined effects of the Jingjiang River flood discharging and the backwater from Dongting Lake, the four rivers basin is a flood disasters-prone area. In order to protect the lives and property of people in the basin, the government started to reinforce the dikes after 1998 Flood, and the overall flood protection capacity had been sharply increased by the combination of dike widening and heightening, hidden dangers removal, slope revetment, leakage control of dike foundation and reinforcement of dike-through structure. Several well-performed new techniques such as assembled anti-flood wall and ecological slope are introduced. The engineering practice shows that the endangers after strengthening have obviously decreased in recent years.