沉箱在存放、安装后未及时回填的情况下,若沉箱底部地基不好,沉箱下淤泥质土较多时,遇大风浪的情况下,容易产生滑移。或者拖轮长拖过程中遇风浪需弃沉箱的情况下。会出现沉箱部分或者全部淹没在水下的情况。针对此种情况,采用钢模板接高,水下起浮站立沉箱的方式进行沉箱打捞。 Caisson in the storage, the backfill did not promptly installed after the case, if the caisson at the bottom of the foundation is not good, more muddy soil under the caissons, in case of large waves, prone to slip. Or tugboat long process of encountering wind and waves to abandon the case of caissons. There may be some or all of the caisson submerged under water. In view of this situation, the use of steel template then high, underwater caisson caisson stand way caisson salvage.