大口径海底管道登陆施工

岙山—册子岛—镇海海底管道登陆工程,登陆端管道长800m,因海水太浅,无法使用铺管船铺管,通过分析比较几种常规施工方法,考虑登陆点陆上条件、海况及气象等影响,为将施工风险和难度降到最低,最终确定采用底拖和发送架发送相结合的方法进行登陆端管道施工。文章介绍了这种方法的施工流程和具体施工步骤。该方法充分利用了现场有利条件,具有受气象影响小、经济效益好的特点,可为同类工程借鉴。

Pipeline Landing Construction of Large Diameter Marine Pipeline

In the landing project of Aoshan-Cezidao-Zhenhai marine pipeline, the length of the landing section of the pipeline is 800 m. Because of extreme shallow water condition, a pipelaying vessel can not be used in the operation. After analyzing and comparing several traditional construction methods and considering the influences of onshore condition as well as sea and meteorological states, a combined method of bottom towing with frame launching is finally adopted to minimize the construction risks and difficulties. This paper describes the construction flow chart and concrete construction process of this method.