海洋工程装备与技术 ›› 2018, Vol. 5 ›› Issue (1): 6-11.doi: 10.12087/oeet.2095-7297.2018.01.02

• 海洋油气勘探开发技术与装备 • 上一篇    下一篇

跨航道大管径海管不停产下沉保护设计和施工效果综述

赵党1, 何宁1, 蔡静2, 余志兵1, 陈思1, 崔少敏1   

  1. 1.海洋石油工程股份有限公司,天津 300451;2.大连海洋大学科技处,辽宁 大连 116023
  • 收稿日期:2017-07-12 修回日期:2017-08-23 出版日期:2018-02-25 发布日期:2018-02-06
  • 作者简介:赵党(1984—),男,硕士,工程师,主要从事海底管道设计。
  • 基金资助:
    月东油田二界沟海管及海缆紧急修复工程(2016年7月—2016年11月);辽宁省社科基金项目“辽宁海域生态补偿机制研究”(L13djy057)

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

ZHAO Dang1, HE Ning1, CAI Jing2, YU Zhi-bing1, CHEN Si1, CUI Shao-min1   

  1. 1. Offshore Oil Engineering Co., Ltd., Tianjin 300451, China; 2. Office of Science and Technology Administration, Dalian Ocean University, Dalian, Liaoning 116023, China
  • Received:2017-07-12 Revised:2017-08-23 Online:2018-02-25 Published:2018-02-06

摘要: 针对辽东湾某油田大管径双层保温管道,在不停产、不减产的情况下,对跨越航道的悬跨进行处理,并使管道下沉。完工后调查显示结果超预期,在不停产情况下实现了海管下沉4.5 m的最大深度。海管下沉至设计深度后的抛石保护设计采用原状土回填底层,既能节省成本又能提高施工效率。项目设计及施工中所采用的分析方法、分段挖沟下沉程序设置等技术可为今后类似工程项目的实施提供借鉴。

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.

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