title: ÐÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð²Ð½Ð¾-ÑÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ðµ ÑÐµÑÐµÐ½Ð¸Ñ ÑÑÑÑÐ¾Ð¹ÑÑÐ²Ð° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°Ð»ÑÐ½ÑÑ ÑÑÑÐ±Ð¾Ð¿ÑÐ¾Ð²Ð¾Ð´Ð¾Ð² Ð² Ð²ÐµÑÐ½Ð¾Ð¼ÑÑÐ·Ð»ÑÑ Ð³ÑÑÐ½ÑÐ°Ñ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° ÑÐ¿ÐµÑÐ¸Ð°Ð»Ð¸ÑÑÐ°
titleType: Subtitle
title: Structural and technological solutions of the laying main pipelines in the perpetually frozen soils
Creators: name: Ð Ð¸Ð½ÐµÐ¹ÑÐºÐ°Ñ, ÐÐ½Ð°ÑÑÐ°ÑÐ¸Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2022
Subjects: Ð¼Ð°Ð³Ð¸ÑÑÑÐ°Ð»ÑÐ½ÑÐµ ÑÑÑÐ±Ð¾Ð¿ÑÐ¾Ð²Ð¾Ð´Ñ
Ð½ÐµÑÑÐµÐ¿ÑÐ¾Ð²Ð¾Ð´Ñ
Ð³Ð°Ð·Ð¾Ð¿ÑÐ¾Ð²Ð¾Ð´Ñ
Ð¼ÑÑÐ·Ð»ÑÐµ Ð³ÑÑÐ½ÑÑ
Ð¼Ð¾Ñ Ð¾Ð²Ð¾-ÑÐ°ÑÑÐ¸ÑÐµÐ»ÑÐ½ÑÐ¹ ÑÐ»Ð¾Ð¹
main pipelines
oil pipe-lines
gas pipe-lines
frozen soils
top moss soil

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description: The topic of the graduate qualification work is Â«Structural and technological solutions of the laying main pipelines in the perpetually frozen soilsÂ».This work is dedicated to research temperature interaction the main pipelines of the underground, surface and above-ground pipelining ways and perpetually frozen soils. PLAXIS 2D software is used for modelling.The main tasks for research:1. To obtain data of the frozen soils properties and main pipelines structures.2. To determine the optimal way of pipelining method depending on the temperature interactions with soils (using the modelling with PLAXIS 2D software).3. To develop the algorithm for determination the optimal geometric parameters of the heat-insulating layer in terms of temperature interactions with the based soils and saving the heat-insulating material for the optimal laying method.4. To determine the optimal geometric parameters of the combined thermal insulation (circular and underlying layer) in terms of temperature interactions with the based soils and saving money using the received algorithm and local estimates.5. To formulate constructive and technological recommendations of the installation main pipelines into the frozen soils.The author found that the surface method of installation is optimal method in terms of temperature interactions with the soils. This conclusion was obtained using the analysis of frozen soils data and the modeling way of the research object. The thaw penetration under the oil pipelines is less than 1.88 times compared to the other methods (after one year of pipelines operation). And in case with gas pipelines is less than 2.39 times.As a result of the research, an algorithm was developed by author for surface main pipelines. This algorithm allows to determine the optimal geometric parameters of the underlying layer of insulation in terms of temperature interactions with the frozen soils. The obtained parameters significantly reduce the cost of thermal insulation.As a result of additional calculations the author determined that the estimated cost of one kilometer construction of the oil location line was reduced at least by 5,39%. About the gas location line - at least by 0,46%.At the end of this graduate qualification work structural and technological recommendations were formulated for the installation of main pipelines in frozen soil conditions.