隔流堤基础水下清淤施工

三峡工程通航建筑物下游隔流堤基础水下清淤是控制大江截流的关键项目之一，也是确保隔流堤安全运行的重要措施。水下清淤选用了绞吸式挖泥船，吸盘式挖泥船，射流泵船，空气吸泥船和抓斗式挖泥船，总清淤５５８万ｍ＾３，清淤最大水深达２４ｍ，月平均清淤强度７０万ｍ＾３最高月强度１１０万ｍ＾３于１９９５年４月完成任务，此计划工期提前了７个月。

Underwater Dredging Construction in the Foundation of the Three Gorges' Separation Levee

Underwater dredging work in the foundation of the separation levee located downstream to the navigation structure of the Three Gorges Project is one of the key works having a great influence upon closure of the main channel of the Yangtze River, and a necessary measure to ensure safe operation of the separation levee as well. Some kinds of dredgers, such as cutter suction dredger, suction disc dredger, jet flow pump dredger, air suction dredger and grab dredger, were used in dredging. The total quantity of dredging was 5 .58 million cubic meters, with a largest depth of underwater dredging of 24m. The average monthly intensity of dredging was 700 thousand cubic meters, with a maximum monthly intensity of dredging of 1.1 million cubic meters. The dredging work was completed seven months ahead of schedule.