Analysis of Piping Methods in Permafrost Soils

• Published in: IOP Conference Series: Earth and Environmental Science
• Main Authors: Garris, N A, Glukhova, Z R
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: IOP Publishing 2021
• Subjects: permafrost
• Online Access: http://dx.doi.org/10.1088/1755-1315/666/4/042046; https://iopscience.iop.org/article/10.1088/1755-1315/666/4/042046; https://iopscience.iop.org/article/10.1088/1755-1315/666/4/042046/pdf

Abstract This article describes the experience of domestic and foreign pipelines operation on permafrost soils. Deformations of pipelines during above-ground and underground laying, as well as development of cryogenic processes in the pipeline running area are noted. Promising methods of laying and operation modes of northern pipelines satisfying the principle of non-invasion of soil and the principle of minimum thermal impact are considered. The surface method of laying a pipeline in areas of frost meets the principle of "minimal invasion" into the soil. The regulation of the thawing halo will allow not only to minimize the effect of thawing and freezing of soil around the pipeline during operation, but also to avoid uncontrolled subsidence and heaving, minimize their value, and exclude karst processes. The surface method of laying a pipeline in an embankment on undisturbed moss cover by self-immersion using operating modes in which technological regulation is carried out reduces the thermal effect of the pipeline on the ground and ensures the restoration of permafrost in winter.