Труды сотрудников ИВМ СО РАН

[Text] / V. M. Sadovskii, O. V. Sadovskaya, A. A. Luk'yanov // J. Appl. Mech. Tech. Phys. - 2014. - Vol. 55, Is. 4. - P689-700, DOI 10.1134/S0021894414040154. - Cited References: 18. - This work was supported by the Russian Foundation for Basic Research (Grant No. 14-01-00130). . - ISSN 0021-8944. - ISSN 1573-8620РУБ Mechanics + Physics, Applied

Аннотация: A solution describing the displacement and stress fields around expanding spherical and cylindrical cavities with allowance for pore collapse is constructed using the theory of small elastic deformations of a homogeneous isotropic porous medium in closed form. Transition of the medium into a plastic state is modeled using the Tresca-Saint Venant yield condition. Porosity change is described on the basis of a mathematical model developed taking into account the increase in the stiffness of the porous material at the moment of pore collapse. It is shown that in the elastic deformation stage, the porosity does not change; an increase in the pressure leads to the formation of a region of plastic compression, in part of which, the pores collapse. Stress and displacement fields in the porous medium during unloading are constructed. It is shown that under certain conditions, the elastic unloading stage is followed by the plastic reflow stage to form a region of pore expansion. As the pressure decreases, the boundary of this region simultaneously reaches the region of plastic reflow and the region of pore collapse.

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Держатели документа:
ИВМ СО РАН

Доп.точки доступа:
Sadovskii, V.M.; Садовский, Владимир Михайлович; Sadovskaya, O.V.; Садовская, Оксана Викторовна; Luk'yanov, A.A.; Russian Foundation for Basic Research [14-01-00130]

/ D. L. Chubarov, V. A. Kochnev, D. A. Terre // IOP Conf. Ser. Earth Envir. Sci. : IOP PUBLISHING LTD, 2016. - Vol. 43: 20th International Scientific Symposium of Students, Postgraduates and (APR 04-08, 2016, Inst Nat Resources, Tomsk, RUSSIA). - Ст. 012024. - (IOP Conference Series-Earth and Environmental Science), DOI 10.1088/1755-1315/43/1/012024. - Cited References:5 . - РУБ Energy & Fuels + Engineering, Petroleum + Engineering, Geological

Аннотация: The largest part of solid minerals (with the exception of those which are at the earth's surface) is being extracted world-wide by surface and underground mining techniques, with adits, mines and other mine workings being used. A considerable amount of mineral deposits (including oil reservoirs) is located either close to a fault-line or immediately within the zone of high seismic activity. To prevent economic and environmental damage under the effect of an earthquake, thorough seismic monitoring of the area must be performed, as well as the study of all possible mechanisms of an earthquake occurrence. In analysing the trigger effect of moon-and sun-induced tidal forces on seismic activity, six great earthquakes which occurred close to equatorial latitude over the last 15 years have been considered. Based on the positions of the Sun and Moon during the day relative to the point mass, the maps of horizontal, vertical components and vector of gravitational forces per unit mass have been plotted. The developed technique can be applicable to a set of methods to study integration and stress unloading mechanisms at the boundaries of block structures.

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Держатели документа:
Natl Res Tomsk Polytech Univ, 30 Lenin Ave, Tomsk, Russia.
Russian Acad Sci, Siberian Branch, Inst Computat Modeling, 50 Acad Gorodok, Krasnoyarsk, Russia.

Доп.точки доступа:
Chubarov, D. L.; Kochnev, V. A.; Terre, D. A.

/ V. M. Sadovskii, O. V. Sadovskaya, E. A. Efimov // Mater. Phys. Mech. - 2019. - Vol. 42, Is. 5. - P544-557, DOI 10.18720/MPM.4252019_8 . - ISSN 1605-2730
Аннотация: The northern territories of Eastern Siberia are characterized by a permafrost-taiga structure of the surface layer of soil, which reduces the efficiency of geological exploration using seismic sources of explosive and vibratory types. Therefore, Geotech Holding Company developed a special eco-friendly electromagnetic pulse source "Yenisei", which seismic waves are the subject of analysis using high-performance computing in this paper. Computational technology, worked out previously for solving the problems of the dynamics of viscoelastic, elastic-plastic, granular and porous media, is applied to the analysis of wave motion of a soil near a point of perturbations. It is shown that the main frequency of generated strain waves substantially depends on the elastic characteristics of a soil in the near-surface zone. A comparison of the results of computations obtained in the framework of the model of static loading with instant unloading and the model taking into account the monotone loading stage with subsequent pressure relief showed the validity of the hypothesis about the presence of added mass of a soil under the loading platform. This mass accumulates impact energy and emits seismic waves due to oscillatory motion. © 2019, Peter the Great St. Petersburg Polytechnic University.

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Держатели документа:
Institute of Computational Modeling SB RAS, Akademgorodok 50/44, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Svobodny pr. 79, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Sadovskii, V. M.; Sadovskaya, O. V.; Efimov, E. A.

/ V. M. Sadovskii, O. V. Sadovskaya, E. A. Efimov // Mater. Phys. Mech. - 2019. - Vol. 42, Is. 5. - P544-557, DOI 10.18720/MPM.4252019_8. - Cited References:18. - This research was supported by the Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research project No. 18-41-242001: "Analysis of wavy seismic fields generated by the electromagnetic pulse source "Yenisei" in heterogeneous soil massifs during geological exploration in the conditions of northern regions of Eastern Siberia". . - ISSN 1605-2730. - ISSN 1605-8119РУБ Materials Science, Multidisciplinary

Аннотация: The northern territories of Eastern Siberia are characterized by a permafrost-taiga structure of the surface layer of soil, which reduces the efficiency of geological exploration using seismic sources of explosive and vibratory types. Therefore, Geotech Holding Company developed a special eco-friendly electromagnetic pulse source "Yenisei", which seismic waves are the subject of analysis using high-performance computing in this paper. Computational technology, worked out previously for solving the problems of the dynamics of viscoelastic, elastic-plastic, granular and porous media, is applied to the analysis of wave motion of a soil near a point of perturbations. It is shown that the main frequency of generated strain waves substantially depends on the elastic characteristics of a soil in the near-surface zone. A comparison of the results of computations obtained in the framework of the model of static loading with instant unloading and the model taking into account the monotone loading stage with subsequent pressure relief showed the validity of the hypothesis about the presence of added mass of a soil under the loading platform. This mass accumulates impact energy and emits seismic waves due to oscillatory motion.

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Держатели документа:
Inst Computat Modeling SB RAS, Akademgorodok 50-44, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Svobodny Pr 79, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Sadovskii, V. M.; Sadovskaya, O., V; Efimov, E. A.; Sadovskii, Vladimir; Sadovskaya, Oxana; Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science [18-41-242001]