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Additional Stress on a Buried Pipeline under the Influence of Coal Mining Subsidence

机译:采煤沉陷影响下地下管道的附加应力

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Buried pipelines influenced by coal mining subsidence will deform and generate additional stress during surface deformation. On the basis of the coordinating deformation relationship between buried pipeline and its surrounding soils, a stress analysis method of a buried pipeline induced by mining was proposed. The buried pipeline additional stresses were analyzed; meanwhile, a corresponding analysis process of the pipeline stresses was also presented during mining subsidence. Furthermore, based on the ground subsidence along the pipeline predicted in advance by the probability integral method, the additional stresses and Von Mises equivalent stresses and their distributions along the buried pipeline induced by the exploitation of a coal mining working face named 14101 were obtained. Meanwhile, a comparative analysis of additional stresses between simulation and analytical calculation was performed for the deep analysis and reliability of the results presented by the proposed methodology in this paper. The proposed method provides references for analysis of the additional stress and safety of buried pipelines under the influence of mining subsidence.
机译:受采煤塌陷影响的地下管道会变形,并在地表变形过程中产生额外的应力。根据埋藏管道与周围土壤的协调变形关系,提出了采矿引起的埋藏管道应力分析方法。分析了地下管道的附加应力。同时,还提出了开采沉陷过程中管道应力的相应分析过程。此外,基于通过概率积分法预先预测的沿管道的地面沉降,获得了由开采14101采煤工作面引起的附加应力和冯·米塞斯当量应力及其在地下管道中的分布。同时,对模拟和分析计算之间的附加应力进行了比较分析,以对本文提出的方法所提供的结果进行深入的分析和可靠性分析。该方法为分析开采沉陷影响下地下管道的附加应力和安全性提供了参考。

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