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- Title
Protecting Arctic marine pipelines against subgouge deformation.
- Authors
Chua, Madeline; Palmer, Andrew; Tjiawi, Hendrik
- Abstract
Gouging ice masses are a threat to underwater pipelines in the Arctic. The problem is made more severe by the fact that the soil under an ice mass is dragged forward as it gouges, so that a pipeline might not be safe even if it is trenched deep enough for the ice itself to clear it. Subgouge deformation is incompletely understood, and predictions are uncertain. The scheme describe here makes it possible to eliminate subgouge deformation, by placing a weak layer above the pipeline and below the gouging ice mass. The layer is not strong enough to transmit downwards the shear forces that induce the deformation. The authors describe an improved version that lends itself to straightforward installation.
- Subjects
ARCTIC regions; UNDERWATER pipelines; PIPELINE protection; SUBMARINE trenches; ICE excavation; COLD weather conditions in engineering
- Publication
Journal of Pipeline Engineering, 2011, Vol 10, Issue 2, p81
- ISSN
1753-2116
- Publication type
Article