模袋混凝土工程在秦淮新河切岭段的应用

Application of bag concrete project in cutting ridge sectionof the new Qinhuai River

秦淮新河作为规划Ⅳ级航道,其切岭段浆砌石护坡破损严重,且坡比陡峭,下部不均匀分布有膨胀土。为了在施工期间不影响河道的航运功能,选择整体性好、便于水下施工、无需搭设围堰的模袋混凝土对水下护坡进行防护。从秦淮新河切岭段模袋混凝土护坡的设计、施工工艺以及工程完工后的检测效果和实施经验进行阐述,为切岭段模袋混凝土护坡施工提供理论依据和应用经验。

The new Qinhuai River,as a class Ⅳ channel,has a severely damaged masonry revetment in the cutting ridge section with a steep slope ratio and uneven distribution of expansive soil in the lower part.In order not to affect the shipping function of the river channel during construction,the bag concrete with good integrity,convenient for underwater construction,and without the need for a cofferdam is selected to protect the underwater slope.The design,construction process,inspection effect and implementation experience of the bag concrete slope protection in the cutting ridge section of the new Qinhuai River was expounded,which could provide theoretical basis and application experience for the bag concrete slope protection in the cutting ridge section.