海底管道在位状态调查实践

根据调查设备搭载器的不同,将海底管道在位状态调查方法归为船载、自治水下机器人搭载(AUV 搭载)和无人遥控潜水器搭载(ROV搭载)三类;在浅水段采用船载调查,在深水段采用AUV搭载调查,在此基础上进行重点关注区域筛选,开展ROV调查,最后进行整体评价和分析对比,这种^“(船载/AUV)+ROV^”组合模式很好地实现了多种调查方法的优势互补。实际上,采用AUV搭载进行海底管道在位状态调查在国内业界尚属首次。调查所取得的管道位置、埋深、周边障碍物的分布以及管道人工处理情况等成果,为后期开展管道维护工作提供了重要的基础数据。此次成功实践可为以后从浅水到深水的管道在位状态调查提供经验和借鉴。

Survey Practice of Submarine Pipeline In-Position State

According to the difference in survey equipment carriers, the survey methods of submarine pipeline in-position state can be classified into three types: shipborne survey, AUV survey and ROV survey. The shipborne survey is commonly used in the shallow water areas, the AUV survey is adopted in the deep water areas and the ROV survey is conducted in the key areas screened based on the above two surveys. Finally, the overall analysis and evaluation are carried out. Such a combination mode of shipborne/AUV+ROV can well realize the complementary advantages of various investigation methods. It is the first time that AUV is used to investigate the submarine pipelines in-position state. The results obtained by using these methods include the position, the buried depth, the other submarine obstacles distributed around the pipelines and the manual handling status of the pipelines. All these can provide important basic data for the future pipeline maintenance. This successful practice has provided valuable experiences and references for the future similar surveys of submarine pipeline in-position state from the shallow waters to the deep seas.