Guohong Lu1,5, Rui Xie2,6This email address is being protected from spambots. You need JavaScript enabled to view it., Ting Zheng1,3, J. Zhang3, Fengjun Xia3, Xiaohua Chen4, Xuepeng Luo3
1Shandong Provincial Lunan Geology and Exploration Institute (Shandong Provincial Bureau of Geology and Mineral Resources No.2 Geological Brigade), Jining 272100, China
2School of Intelligent Manufacturing, Sichuan Institute of Arts and Science, Dazhou, China, 635000
3Oil and gas equipment technology Sharing and Service Platform of Sichuan Province, Southwest Petroleum University, Chengdu 610500, China
4National Pipe Network Group Southwest Pipeline Co., Ltd.Chengdu 610094China
5Technology Innovation Center of Restoration and Reclamation in Mining induced Subsidence Land, Ministry of Natural Resources, Jining 272100, China
6Dazhou Industrial Technology Institute of Intelligent Manufacturing, Dazhou 635000, China
Received: May 8, 2023 Accepted: July 22, 2023 Publication Date: October 8, 2023
Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.
The deformation of the curved pipeline in the mining subsidence area may be different from the ordinary straight pipeline. Curved pipeline is prone to large deformation in the mining subsidence area, which may cause pipeline accidents. Thus, it is of great importance to investigate the mechanical properties of the curved pipeline in the mining subsidence area. The numerical simulation model of pipeline-soil coupling was established by the nonlinear numerical simulation method in this study. The mechanical responses of the curved pipeline under the stratum settlement, collapse, and suspension are investigated. The results show that when the settlement area is located below the curved section of the pipeline, the maximum stress is in the middle of the curved section, there will be more high stress areas when the curved angle larger. When the settlement area is located below the half curved part and half straight part of the pipeline, the high stress area of the pipeline is located at the end of the curved section. The stress and displacement increase with the increase of angle in both cases, but the maximum stress in pipeline is not reached the yield strength. Whether the collapse interface is located in the middle of the curved section or at both ends of the curved section, the high stress area occurs near the collapse interface, the large curved angle of the pipeline is prone to generate large high stress area and produce large plastic strain, and the cross section of the pipeline has a tendency to squeeze to one side. For the suspended curved pipeline, the stress, plastic strain and displacement of the suspended curved pipeline increase with the increase of suspended length and curved angle.
[1] X. Li. “Stress analysis and safety study of buried pipeline in subsidence area". (phdthesis). Liaoning Shihua University, 2020.
[2] Y. Di, J. Shuai, X. Wang, and L. Shi, (2013) “Study on methods for classifying oil & gas pipeline incidents" China Safety Science Journal 23(7): 109–115.
[3] L. Li. “Impact of mining subsidence on long-distance pipeline stress and deformation". (phdthesis). Beijing Jiaotong University, 2013.
[4] P. Xu, (2015) “Study on the buried pipeline-soil interaction and its mechanical response by mining subsidence" China University of Mining and Technology: 37.
[5] G. C. Sarvanis and S. A. Karamanos, (2017) “Analytical model for the strain analysis of continuous buried pipelines in geohazard areas" Engineering structures 152: 57–69. DOI: 10.1016/j.engstruct.2017.08.060.
[6] T. Zheng, Z. Liang, L. Zhang, S. Tang, and Z. Cui, (2021) “Safety assessment of buried natural gas pipelines with corrosion defects under the ground settlement" Engineering Failure Analysis 129: 105663. DOI: 10.1016/j.engfailanal.2021.105663.
[7] Y. Wu, Y. Zhang, S. Zha, and G. Qin, (2020) “Strength analysis of buried polyethylene pipeline under ground subsidence considering multivariate influence" Journal of Pressure Vessel Technology 142(4): 041802. DOI: 10.1115/1.4046515.
[8] H.-J. Li, H.-H. Zhu, H.-Y. Wu, B. Zhu, and B. Shi, (2022) “Experimental investigation on pipe-soil interaction due to ground subsidence via high-resolution fiber optic sensing" Tunnelling and Underground Space Technology 127: 104586. DOI: 10.1016/j.tust.2022.104586.
[9] X. Xu, K. He, and Y. Su, (2020) “Safety analysis of pipe–soil coordination deformation affected by mining subsidence" Geotechnical and Geological Engineering 38: 2187–2198. DOI: 10.1007/s10706-019-01156-w.
[10] F.-Q. Chen, S.-Q. Fang, and L.-B. Lin, (2023) “Mechanical Analyses of Underground Pipelines Subjected to Ground Subsidence Considering Soil-Arching Effect" Journal of Pipeline Systems Engineering and Practice 14(2): 04022076. DOI: 10.1061/JPSEA2.PSENG1405.
[11] H. E. Demirci, S. Bhattacharya, D. Karamitros, and N. Alexander, (2018) “Experimental and numerical modelling of buried pipelines crossing reverse faults" Soil Dynamics and Earthquake Engineering 114: 198– 214. DOI: 10.1016/j.soildyn.2018.06.013.
[12] A. Liu, (2002) “Response analysis of a buried pipeline crossing the fault based on shell-model" China Seismological Bureau, Institute of Geophysics, Beijing:
[13] A. Klar, T. Vorster, K. Soga, and R. Mair, (2005) “Soil—pipe interaction due to tunnelling: comparison between Winkler and elastic continuum solutions" Géotechnique 55(6): 461–466. DOI: 10.1680/geot.2005.55.6.461.
[14] J. Zhang, Z. Liang, and C. Han, (2014) “Buckling behavior analysis of buried gas pipeline under strike-slip fault displacement" Journal of Natural Gas Science and Engineering 21: 921–928. DOI: 10.1016/j.jngse.2014.10.028.
[15] P. Vazouras, S. A. Karamanos, and P. Dakoulas, (2010) “Finite element analysis of buried steel pipelines under strike-slip fault displacements" Soil Dynamics and Earthquake Engineering 30(11): 1361–1376. DOI: 10.1016/j.soildyn.2010.06.011.
[16] X. Zhao. Deformation and Stress Analysis of Buried Pipe Crossing Mining Subsidence Area and Remote Monitoring. 2015.
[17] P. Vazouras, S. A. Karamanos, and P. Dakoulas, (2012) “Mechanical behavior of buried steel pipes crossing active strike-slip faults" Soil Dynamics and Earthquake Engineering 41: 164–180. DOI: 10.1016/j.soildyn.2012.05.012.
[18] J. Zhang, Z. Liang, and G. Zhao, (2016) “Mechanical behaviour analysis of a buried steel pipeline under ground overload" Engineering Failure Analysis 63: 131–145. DOI: 10.1016/j.engfailanal.2016.02.008.
[19] X. Wang, J. Shuai, and J. Zhang, (2011) “Mechanical response analysis of buried pipeline crossing mining subsidence area" Rock Soil Mech 32(11): 3373–3378.
[20] P. Vazouras and S. A. Karamanos, (2017) “Structural behavior of buried pipe bends and their effect on pipeline response in fault crossing areas" Bulletin of Earthquake Engineering 15: 4999–5024. DOI: 10.1007/s10518-017-0148-0.
We use cookies on this website to personalize content to improve your user experience and analyze our traffic. By using this site you agree to its use of cookies.
