On-Stream Subsidence Protection Design and Construction Performance of Large-Diameter Submarine Pipelines Across Channels

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  • 1. Offshore Oil Engineering Co., Ltd., Tianjin 300451, China; 2. Office of Science and Technology Administration, Dalian Ocean University, Dalian, Liaoning 116023, China

Received date: 2017-07-12

  Revised date: 2017-08-23

  Online published: 2018-02-06

Abstract

For a large-diameter double-insulating submarine pipeline located in Liaodong Bay, a span across channels is treated and subsidence protection is achieved during on-stream maintenance. Test results after the construction show that the subsidence depth reaches 4.5 m, which is the largest depth compared with other projects in China. In the subsequent rock dumping protection, trench soil is used to finish the first backfill layer, which can save the cost and greatly promote the construction efficiency. The design and construction methods used in this project are of value for further design of similar submarine pipeline projects.

Cite this article

ZHAO Dang, HE Ning, CAI Jing, YU Zhi-bing, CHEN Si, CUI Shao-min . On-Stream Subsidence Protection Design and Construction Performance of Large-Diameter Submarine Pipelines Across Channels[J]. Ocean Engineering Equipment and Technology, 2018 , 5(1) : 6 -11 . DOI: 10.12087/oeet.2095-7297.2018.01.02

References

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