Underground Fastening of the Trunk Pipelines in Areas of Intermittent and Insular Permafrost
Abstract The paper is devoted to the development of methods for ensuring the design position for underground sections of gas trunk lines laid in areas of permafrost propagation at the risk of formation of frost mound at the areas of intersection of continuous ice lenses. It is proven the advantages...
| Published in: | IOP Conference Series: Earth and Environmental Science |
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| Main Authors: | , , |
| Format: | Article in Journal/Newspaper |
| Language: | unknown |
| Published: |
IOP Publishing
2020
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1088/1755-1315/459/3/032026 https://iopscience.iop.org/article/10.1088/1755-1315/459/3/032026/pdf https://iopscience.iop.org/article/10.1088/1755-1315/459/3/032026 |
| Summary: | Abstract The paper is devoted to the development of methods for ensuring the design position for underground sections of gas trunk lines laid in areas of permafrost propagation at the risk of formation of frost mound at the areas of intersection of continuous ice lenses. It is proven the advantages of underground lining of separate potentially hazardous sections of the route of small length without thermal insulation, for which is proposed the way of local fastening using a specially developed underground support structure in the form of a pile base with pipe fastening by flexible links. Numerical studies of the stress-strain state of the underground fixed section of the pipeline and its underground support were carried out on the basis of the finite element model, during which the optimal laying parameters have been determined. |
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