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Influence of Anchoring on Burial Depth of Submarine Pipelines

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  • Yuan Zhuang
  • Yang Li
  • Wei Su

Abstract

Since the beginning of the twenty-first century, there has been widespread construction of submarine oil-gas transmission pipelines due to an increase in offshore oil exploration. Vessel anchoring operations are causing more damage to submarine pipelines due to shipping transportation also increasing. Therefore, it is essential that the influence of anchoring on the required burial depth of submarine pipelines is determined. In this paper, mathematical models for ordinary anchoring and emergency anchoring have been established to derive an anchor impact energy equation for each condition. The required effective burial depth for submarine pipelines has then been calculated via an energy absorption equation for the protection layer covering the submarine pipelines. Finally, the results of the model calculation have been verified by accident case analysis, and the impact of the anchoring height, anchoring water depth and the anchor weight on the required burial depth of submarine pipelines has been further analyzed.

Suggested Citation

  • Yuan Zhuang & Yang Li & Wei Su, 2016. "Influence of Anchoring on Burial Depth of Submarine Pipelines," PLOS ONE, Public Library of Science, vol. 11(5), pages 1-15, May.
    • Handle: RePEc:plo:pone00:0154954
    DOI: 10.1371/journal.pone.0154954
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