트렌치안의 복합 해저관로의 안정성

초록

To treansport gas, oil, water and oil products, offshore pipelines are commonly and importantly used. The dual pipelines are also very much applied to reduce the installation cost and time. There are great advantages in the installation of dual pipelines over two separate single lines. It can greatly reduce the cost for the installation of pipelines and also for the back-filling of trench area. However the installation of dual pipelines often requires technical challenges. Pipelines should be placed to be stable against external loadings during installation and design life period. Dual pipelines in trench can reduce the influence of external forces. To investigate the flow patterns and forces as trench depth and slope changes, number of experiments are conducted with PIV equipment in a circulating water channel.