10.14489/td.2020.12.pp.058-063

2020, 12 December

DOI: 10.14489/td.2020.12.pp.058-063

Sidorov M. M., Golikov N. I., Tihonov R. P.
EVALUATION OF THE STRESSED DEFORMED STATE OF MAIN GAS PIPELINES RUNNING IN PERMANENTLY FROZEN GROUNDS
(pp. 58-63)

Abstract. The work evaluates the stress deformed state of the section of the interfield gas collecting main, running in permanently frozen grounds. The object of research is a section of a pipeline with an arched discharge formed as a result of loss of stability as a result of thermal erosion of permanently frozen grounds to disturbance of the vegetation cover. The determination of stresses was carried out by the X-ray method using portable equipment. The experimental data were analyzed with the calculated. The calculated data were obtained by measuring the spatial position of the gas pipeline section. The obtained values of the acting stresses and the estimates of the critical indicators of the gas pipeline monitoring section made it possible to reasonably estimate the stress state. The methodology for determining the acting stresses of pipelines using portable X-ray equipment can be successfully applied to estimate the stressed-deformed state of pipeline systems running in the zone of permafrost.

Keywords: stressed deformed state, permanently frozen grounds, main gas pipelines, mechanical stresses, X-ray method.

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M. M. Sidorov, N. I. Golikov, R. P. Tihonov (Larionov Institute of Physical and Technical Problems of the North, the Siberian Branch of the Russian Academy of Science, Federal Research Center ‘Yakut Scientific Center of the Siberian Branch of the Russian Academy of Sciences’, Yakutsk, Russia)

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