This technical note presents simplified parametric solutions for the axial response of surface-laid submarine pipelines subjected to drag from debris flows. In assessing impacted by flow emanating a landslide, both normal and responses must be considered. Previous work has indicated that these can decoupled, at least as first-stage analysis. The most critical aspect is potential pipeline buckle...

Local scour around a submarine piggyback pipeline in combined waves and current is investigated experimentally. Based on the experimental results, evolution morphology are firstly analyzed. Then, comparison with equilibrium depth Seq between present data predicted results conducted. After that, correlation dimensionless timescale T* maximum Shields parameter ?cw investigated, formula obtained t...

The effect of pipeline surface roughness on the interaction between submarine landslides and pipelines may not be insignificant has rarely been quantified. In this paper, a previously validated computational fluid dynamics model is employed to study suspended or laid-on-seabed pipelines, respectively, which are roughened in order quantify roughness. Here, four orders magnitude roughnesses chose...