浅地层剖面仪在强潮流冲刷海域海底管道检测中的应用
Application of Sub-Bottom Profiler for Submarine Pipeline Inspection in Strong Tidal Current Scour Sea Areas

以舟山海域为例，应用浅地层剖面仪对强潮流冲刷海域海底管道进行定期检测，并根据海区的实际情况优化检测方法，选择小潮平潮时段，关闭动力，慢速横穿管线，得到清晰完整的海底剖面和管道状态的图像。预先沿路由走向测量，可以优化检测断面的布设。结合其他仪器测量和沉积物采样结果，对声学图像进行对比和验证，对海底冲淤和海底管道的现状以及可能的发展趋势进行综合判断。从而查明管道的埋深现状，分析海底管道建成以来的冲淤变化状况及其原因和趋势，为管道的安全运行和维护提供决策依据。
Taking Zhoushan sea area as an example, the sub-bottom profiler was applied to carry out regular inspection of submarine pipelines in strong tidal scouring sea areas, and the inspection method was optimized according to the actual situation of the sea area, choosing the neap-tide period and shutting down the surveying vessel’s power to cross the pipelines at a slow speed, so that a clear and complete image of submarine profiles and pipeline status could be obtained. Pre-measurement along the route courses could optimize the layout of the detection sections. Combined with other instrument measurements and sediment sampling results which provide comparison and validation for acoustic images, the current status of seabed scouring and submarine pipeline and the possible development trend could be comprehensively judged. Thus, the current situation of the buried depth of the pipeline could be identified, and the changes in the bury status of the submarine pipeline since its construction, as well as its causes and trends, could be analyzed to provide a basis for decision-making on the safe operation and maintenance of the pipeline.