刘玉卿, 仝雷, 余志峰, 史航. 西气东输二线穿越处管道位移分析及解决方案[J]. 油气储运, 2018, 37(12): 1398-1403. DOI: 10.6047/j.issn.1000-8241.2018.12.013
引用本文: 刘玉卿, 仝雷, 余志峰, 史航. 西气东输二线穿越处管道位移分析及解决方案[J]. 油气储运, 2018, 37(12): 1398-1403. DOI: 10.6047/j.issn.1000-8241.2018.12.013
LIU Yuqing, TONG Lei, YU Zhifeng, SHI Hang. Analysis and solution on the displacement of the Second West-to-East Gas Pipeline at the crossing position[J]. Oil & Gas Storage and Transportation, 2018, 37(12): 1398-1403. DOI: 10.6047/j.issn.1000-8241.2018.12.013
Citation: LIU Yuqing, TONG Lei, YU Zhifeng, SHI Hang. Analysis and solution on the displacement of the Second West-to-East Gas Pipeline at the crossing position[J]. Oil & Gas Storage and Transportation, 2018, 37(12): 1398-1403. DOI: 10.6047/j.issn.1000-8241.2018.12.013

西气东输二线穿越处管道位移分析及解决方案

Analysis and solution on the displacement of the Second West-to-East Gas Pipeline at the crossing position

  • 摘要: 西气东输三线与西气东输二线管道采用并行敷设方式,在西气东输三线管道施工时,在精伊霍铁路穿越处开挖了西气东输二线管道一侧覆土,西气东输二线管道发生明显的弯曲变形。利用ANSYS软件,模拟计算暴露段管道在内压、温度、土壤压力等综合作用下产生的应力、位移,并对管道进行应力校核。结果表明:施工开挖导致暴露段管道土壤约束不平衡,侧向土压力是导致管道发生位移的主要原因。因而提出了减少位移的解决方案:采用分段开挖、回填暴露段管道另一侧土,释放管道由侧向土压力产生的应力。通过落实该解决方案,消除了管道位移风险,提高了管道安全平稳运行的可靠性。

     

    Abstract: The Third and the Second West-to-East Gas Pipeline are laid in parallel. During the construction of the Third West-to-East Gas Pipeline, the earth on the one side of the Second West-to-East Gas Pipeline was excavated at the crossing position of the Jinghe-Yining-Huoerguosi railway, and the Second West-to-East Gas Pipeline suffered obvious bending deformation. In this paper, the stress and displacement of the exposed pipeline section under the joint effect of internal pressure, temperature and soil pressure were simulated and calculated by the software ANSYS, and the pipeline stress was checked. It is shown that the excavation leads to imbalanced soil restraint on the exposed pipeline section. The lateral soil pressure is the main cause of the pipeline displacement. Accordingly, the solution for displacement reduction was proposed. That is to release the stress on the pipeline resulted from the lateral soil pressure by conducting stepwise excavation and back filling at the other side of the exposed pipeline section so as to reduce the horizontal displacement of pipelines. And by means of transformation measures, the risk of pipeline displacement is eliminated and the reliability of the pipeline is improved.

     

/

返回文章
返回