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冰川冻土 ›› 2022, Vol. 44 ›› Issue (1): 217-228.doi: 10.7522/j.issn.1000-0240.2022.0032

• 寒区工程与灾害 • 上一篇    下一篇

多年冻土区输油管道-管周冻土热力相互作用研究进展

王飞1,2(), 李国玉2,3(), 马巍2()   

  1. 1.江苏大学 土木工程与力学学院,江苏 镇江 212013
    2.中国科学院 西北生态环境资源研究院 冻土工程国家重点实验室,甘肃 兰州 730000
    3.中国科学院 西北生态环境资源研究院 大兴安岭冻土工程与环境观测研究站,黑龙江 加格达奇 165000
  • 收稿日期:2020-02-02 修回日期:2020-08-31 出版日期:2022-02-28 发布日期:2022-03-28
  • 通讯作者: 李国玉,马巍 E-mail:wangfei9107@126.com;guoyuli@lzb.ac.cn;mawei@lzb.ac.cn
  • 作者简介:王飞,讲师,主要从事冻土与寒区管道工程研究. E-mail: wangfei9107@126.com
  • 基金资助:
    中国科学院A类战略性先导科技专项(XDA2003020102);国家自然科学基金项目(42101121);冻土工程国家重点实验室开放基金项目(SKLFSE202010)

Progress in the research on the thermo-mechanical interaction between oil pipeline and permafrost in cold regions

Fei WANG1,2(), Guoyu LI2,3(), Wei MA2()   

  1. 1.Faculty of Civil Engineering and Mechanics,Jiangsu University,Zhenjiang 212013,Jiangsu,China
    2.State Key Laboratory of Frozen Soil Engineering,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China
    3.Da Xing’anling Observation and Research Station of Frozen-Ground Engineering and Environment,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Jiagedaqi 165000,Heilongjiang,China
  • Received:2020-02-02 Revised:2020-08-31 Online:2022-02-28 Published:2022-03-28
  • Contact: Guoyu LI, Wei MA E-mail:wangfei9107@126.com;guoyuli@lzb.ac.cn;mawei@lzb.ac.cn

摘要:

冻土区管道工程建设面临冻土工程特性及相关地质问题的严重挑战,开展管道-冻土相互作用研究对于解决管道稳定性问题具有重要的实际指导意义。综述国内外输油管道-冻土热力相互作用研究进展发现,目前研究集中在特定(定值或周期变化)油温下管周土温度场的定量描述以及差异冻胀/融沉下交界面处管道力学响应规律的解耦分析,缺乏完整时空序列的现场综合观测与管土界面特性及其动态演化研究。对管道防融沉措施进行归纳总结发现,各措施应用效果缺乏管道应力与变形数据的有效支持。应加强管道本身与管道沿线次生冻融灾害监测及相关数据获取,以此为校验开展管土界面特性及演化规律的系统研究,以便构建更为合理的管土接触面单元模型,将其和具有普适性的冻土模型相结合,植入有限元软件提高管土相互作用模型计算可靠性,并建议立足管道变形角度对防融沉措施的工程应用效果予以综合评价。

关键词: 输油管道, 冻土, 相互作用, 融沉, 冻胀

Abstract:

The engineering characteristics of permafrost and its coherent geological problems are the huge challenge during the construction of pipelines in permafrost regions. Research on the pipeline-permafrost interaction is important for solving the stability problems of pipeline. In this paper, thermal and mechanical interaction of pipeline with permafrost is reviewed and discussed. It is found that previous researches focus on the quantitative description of temperature fields around the pipeline under a given or cyclic oil temperature, and the decoupling analysis of mechanical response of pipeline under differential deformation induced by frost heave or thaw settlement of pipeline foundation soil. The comprehensive in-situ monitoring data can barely be found, and systematic research on the interface characteristic between pipeline and permafrost is lack. Meanwhile, the existing anti-thaw settlement measures are classified and assessed, indicating that the application and evaluation of these mitigative measures is not supported by pipeline deformation data. Finally, the prospect of research on pipeline-permafrost interaction is presented, including strengthening the monitoring of stress and deformation for buried pipeline and secondary freezing-thawing hazards along the pipeline route, studying the interface property of pipeline-permafrost and its evolution process to establish a more reasonable contact element model, embedding interface model and permafrost model with general applicability to the finite element software to improve the reliability of pipeline-permafrost model, and evaluating performance of mitigative measures from the viewpoint of the deformation stability of pipeline.

Key words: oil pipeline, permafrost, interaction, thaw settlement, frost heave

中图分类号: 

  • P642.14