九江济益公堤加固吹填设计与施工

济益公堤位于长江南岸九江市区下游，长４．９ｋｍ，为长江干流的２级堤防。济益公堤加固工程包括堤内填塘及压浸台土方填筑。堤内外取土困难，而堤外长江河道中沙料储量丰富。因此，堤内填塘及压浸填筑采用绞吸式挖泥船吹填施工。对该堤防加固工程的工况条件、设计方案、主要项目的施工方法进行了介绍。通过该工程的施工，得到以下经验：排泥场、输泥管线应妥善布置，施工中应考虑天气恶劣、交通不便等不利因素对施工的影响。只有这

Strengthening Jiyigong dyke at Jiujiang with cutter-suction dredgers

Jiyigong dyke,located on the south bank of the Yangtze River down stream from the urban district of the Jiujiang city,4.9 km long,is the grade 2 dyke of the main stem of the Yangtze River.The strengthening works of Jiyigong dyke includes filling up of pools and embankment of seepage-suppressing platforms on the inner side of the dyke.Because it was difficult to borrow earth in the outer and inner areas of the dyke,and there was plenty sand reserve in the river course,cutter-suction-type dredgers were used for filling the pools and the seepage-suppressing platforms on the inner side of the dyke.This paper presents the construction condition,design scheme and construction method for main projects of the dyke strengthening works.The experience obtained from the construction of the dyke strengthening works is that mud-dumping yards and mud-delivering pipes sbould be properly arranged;effects of unfavorable factors (bad weather,poor transport facilities,etc.,) on construction should be taken into consideration,and only by this way,can the project cost be reduced and the works be carried out in time and with good quality.