海底悬跨管道对渔船拖网机具拖带力的作用特性分析  

An analysis of the effect of submarine suspended pipelines on the towing force of a fishing vessel’s trawling gears

作　　者：文近来 李强 李学楠 刘军 代志双 安晨[3] WEN Jinlai;LI Qiang;LI Xuenan;LIU Jun;DAI Zhishuang;AN Chen(CNOOC(China)Co.,Ltd.Tianjin Branch,Tianjin 300459,China;CNOOC(Tianjin)Pipeline Engineering Technology Co.,Ltd.,Tianjin 300452,China;College of Safety and Ocean Engineering,China University of Petroleum(Beijing),Beijing 102249,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300459 [2]中海油(天津)管道工程技术有限公司,天津300452 [3]中国石油大学(北京)安全与海洋工程学院,北京102249

出　　处：《应用科技》2025年第1期14-19,47,共7页Applied Science and Technology

摘　　要：海底悬跨管道作为海洋油气工程的重要组成设施,对于保障海洋油气输送的安全运行至关重要。本文通过OrcaFlex软件构建拖船、拖网线、配重、管道与土体相互作用的数值模型,分析了配重型拖网机翻越管道过程中的力学行为,并探讨了悬跨管道端部支撑刚度、管道刚度和悬跨高度对拖带力的影响。结果表明DNV-RP-F111规范会低估管道所受的拖带力,柔性管道在配重型拖网机翻越会发生显著的侧向位移并导致轴向张力增加。建议工程设计中使用数值模型进行拖带力评估,以提高海底管道工程设计的准确性和经济性。本文数值模拟结果可为建立拖网对海底管道影响的分析标准和方法打下基础,对保证海底悬跨管道服役期间安全运行有重要的工程意义。As a critical component of offshore oil and gas engineering,subsea suspended pipelines are essential for ensuring the safe operation of marine oil and gas transportation.The software OrcaFlex was employed to construct a numerical model incorporating the interaction between boats,trawl lines,counterweights,pipelines,and the seabed.The mechanical behavior of the weighted trawl machine traversing the pipeline was analyzed,and the effects of end support stiffness of the suspended pipeline,pipeline stiffness,and suspension height on the towing forces were explored.The results indicate that the DNV-RP-F111 code underestimates the towing force exerted on the pipeline.Additionally,flexible pipelines will exhibit significant lateral displacement and increase axial tension when they are traversed by the weighted trawl machine.It is recommended to use numerical models for the assessment of drag forces in engineering design,so as to improve accuracy and cost effectiveness of subsea pipeline engineering design.The numerical simulation results presented in this paper lay the foundation for establishing analysis standards and methods for the impact of trawling on subsea pipelines,which is of great significance to ensuring the safe operation of submarine suspended pipelines during their service period.

关 键 词：海底管道安全 悬跨管道 拖带力 拖网作业 数值模型 管道端部支撑 动态响应分析 工程设计优化 

分 类 号：P756.2[天文地球—海洋科学]