E3S Web Conf.
Volume 192, 2020VIII International Scientific Conference “Problems of Complex Development of Georesources” (PCDG 2020)
|Number of page(s)||6|
|Section||Geotechnical and Geomechanical Problems of Development of Mineral Resources|
|Published online||30 September 2020|
Maintaining thermal stability of a fill slope in cryolithozone
Mining Institute of the North, Siberian Branch, Russian Academy of Sciences, 677980, Russian Federation, Sakha Republic (Yakutia), Yakutsk, pr. Lenina, 43.
* Corresponding authors: firstname.lastname@example.org
The paper describes a solution to the problem of maintain the stability of a fill slope through artificial freezing with seasonal cooling units in cryolithozone. A three-dimensional mathematical model was developed to calculate the heat flow in a fill slope reinfirced with a gabion wall, taking into account the liquid-liquid phase transition and the use of seasonally operating cooling units. The developed mathematical model, based on the finite difference method and implemented as an application for Microsoft Windows, allows making a long-term forecast of a temperature field in a fill slope, depending on various design and technological parameters (location, dimensions and an operating mode of thermal stabilizers) and its effect on the stability of the slope. The results of studying the contribution of thermal stabilization to a reduced destructive temperature effect of the environment on the slope are given. The study showed the effectiveness of using seasonal cooling units for increasing the stability of fill slopes by freezing. In subsequent years after the thermal stabilization, the frozen zone in the fill slope is preserved, with the slope gradually switching to the natural seasonal temperature regime. The paper is recommended for researchers and designing engineers dealing with applied issues of mining thermal physics.
Key words: slope / cryolithozone / thermal stabilization / thermal regime / mathematical model / stability / seasonal cooling unit
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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