大砂袋围堰在围海造陆工程中的应用

Application of Big-sandbag Cofferdam in Land Reclamation Engineering

随着社会经济的发展,世界上不少国家有围海造地的需求。大砂袋围堰由于其具有良好的整体性和柔韧性,且对堤基的变形具有较好的适应性,已成功应用于多个围海造陆工程。但在大砂袋围堰施工过程中也出现过围堰失稳的案例。以一填海造陆工程为例,介绍了大砂袋围堰的设计及施工情况,利用极限平衡法分析了其在施工过程中出现塌陷的原因,为以后的工程现场施工提供借鉴经验。

With the economic and social development,land reclamation has been becoming a requirement for many countries around the world.The big-sandbag cofferdam has been successfully applied in many land reclamation projects because of its good integrity and flexibility,and good adaptation to the deformation of embankment foundation.However,there are also cases of cofferdam instability in the big-sandbag cofferdam construction.Taking a land reclamation project as an example,the design and construction of big-sandbag cofferdam are introduced.Based on the limit equilibrium method,the reasons of collapse in its construction process are analyzed.Some corresponding experience and suggestions are provided for the later engineering site construction.