某沉船打捞作业工前礁盘多波束扫测

Multibeam scanning of reef before wreck removal

为顺利完成沉船打捞任务,在作业前需要对沉船所在礁盘的水深、地形和沉船残骸情况进行调查。采用多波束扫测方法对礁盘及周边水深进行详细调查,获取水深数据,统计分析后发现5~10 m占总测量超过一半为55%;通过三维软件进行地形模拟,可以看出礁盘顶部地形较为平整;通过对礁盘上局部水深特异值的分析,判断出大型残骸可能存在的区域位置。本文不仅为该船打捞方案的制定提供基础数据,也为其他打捞工程前期水深调查提供参考。

In order to successfully complete the wreck removal,it is necessary to investigate the water depth,topography and wreck condition of the debris before the operation.The multi-beam scanning method is used to conduct a detailed survey on the water depth of the reef and its surroundings,and the water depth data are obtained.After statistical analysis,it is found that 5 m to 10 m water depth accounted for more than half of the total measurement,55%.Through the three-dimensional software simulation,it can be seen that the top of the cay is relatively flat.The possible location of large debris is determined by the analysis of partial water depth specific value on the reef.This paper not only provides basic data for the formulation of the removal plan of the ship,but also provides reference for the preliminary water depth survey of other salvage projects.