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Scour protection of submarine pipelines using rubber plates underneath the pipes
Yang, L. Shi, B. Guo, Yakun Zhang, L. Zhang, J. Han, Y.
Yang, L.
Shi, B.
Guo, Yakun
Zhang, L.
Zhang, J.
Han, Y.
Publication Date
2014-07-01
End of Embargo
Supervisor
Rights
© 2014 Elsevier. Reproduced in accordance with the publisher's self-archiving policy. This manuscript version is made available under the CC-BY-NC-ND 4.0 license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Peer-Reviewed
Yes
Open Access status
openAccess
Accepted for publication
2014-04-05
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Department
Awarded
Embargo end date
Additional title
Abstract
This paper presents the results from laboratory experiments to investigate the protection of scour around submarine pipelines under unidirectional flow using a rubber plate placed underneath the pipes. The pressure difference on the two sides of the pipeline is the driving force to initiate the movement of sediment particles and can be obtained by force balance analysis. Experiments covering a wide range of incoming flow velocity, pipe diameter and plate length show that there exists a critical pressure difference over which the movement of sediment and, thus, scour takes place. Analysis of the experimental results demonstrates that this critical pressure difference is related to the pressure difference of the axial points between upstream and downstream of the pipe, which can be easily determined. This critical pressure difference is used to develop an empirical formula for estimating the critical length of the rubber plate, over which the sediment movement and scour will not take place. Good agreement between the experiments and calculated critical plate length using the proposed formula is obtained.
Version
Accepted manuscript
Citation
Yang L, Shi B, Guo Y et al (2014) Scour protection of submarine pipelines using rubber plates underneath the pipes. Ocean Engineering. 84: 176-182.
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Type
Article