Investigations on the Effectiveness of Protection Methods for a Submarine Pipeline Exposed to the Impact of a Falling Anchor

The occurrence of a buried submarine pipeline crossing channel becoming damaged by the impact falling anchor is more common. It important to analyze dynamic response pipelines exposed such and develop effective protection methods ensure safe operation anchors. In this study, different methods, including pure rock, concrete mattress + rock rubber pad, compound flexible pad are physically tested. strains at impacting point along were measured with fiber Bragg grating (FBG) sensors. effectiveness analyzed based on maximum strain its affected length pipeline. Then, theoretical model established deformation Through curve-fitting experimental results, bearing capacity coefficients for determined. method has best performance protect from anchor.