There is very strong evidence that in most locations the seabed becomes unstable and mobile before the design conditions for a submarine pipeline are reached. The conventional theory of stability takes the seabed as stable, and is therefore fundamentally flawed. This is an important issue for pipelines to the north-west of Australia, where violent tropical revolving storms occur and the sea is not particularly deep. The paper describes the construction and commissioning of a facility to investigate this question. Previous work has been carried out in wave flumes and U-tubes. The new facility has a different concept, and has a closed O-tube form, in which the oscillating and steady flows are driven by a propeller. A small version was completed in 2008, and the second and much larger facility was completed in late 2009.
http://atteris.com.au/wp-content/uploads/2014/10/Atteris-logo-for-case-studies.png 1167 1400 Jessica Rucks http://www.atteris.com.au/wp-content/uploads/2014/08/ATTERIS-logo-Small.png Jessica Rucks2010-02-24 06:17:012014-12-05 05:39:44Jas, E., Cheng, L., White, D., Palmer, A., Czajko, A., Fogliani, N., Fricke, R., Wei An, H., (2010) “A New Facility for Research on the Stability of Pipelines on Unstable Seabeds”, Offshore Pipeline Technology Conference 2010, Amsterdam, (OPT)