ANALYSIS OF SEISMIC WAVES EXCITED IN NEAR-SURFACE SOILS BY MEANS OF THE ELECTROMAGNETIC PULSE SOURCE "YENISEI"

Тип публикации: статья из журнала

Год издания: 2019

Идентификатор DOI: 10.18720/MPM.4252019_8

Ключевые слова: blocky-layered geomedium, electromagnetic pulse source, seismic oscillations, elastic waves, parallel computational algorithm, supercomputer modeling, Blocky-layered geomedium, Elastic waves, Electromagnetic pulse source, Parallel computational algorithm, Seismic oscillations, Supercomputer modeling

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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Издание

Журнал: MATERIALS PHYSICS AND MECHANICS

Выпуск журнала: Vol. 42, Is. 5

Номера страниц: 544-557

ISSN журнала: 16052730

Место издания: ST PTERSBURG

Издатель: INST PROBLEMS MECHANICAL ENGINEERING-RUSSIAN ACAD SCIENCES

Авторы

  • Sadovskii V.M. (Inst Computat Modeling SB RAS, Akademgorodok 50-44, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Svobodny Pr 79, Krasnoyarsk 660041, RussiaArticle)
  • Sadovskaya O.V (Inst Computat Modeling SB RAS, Akademgorodok 50-44, Krasnoyarsk 660036, Russia)
  • Efimov E.A. (Siberian Fed Univ, Svobodny Pr 79, Krasnoyarsk 660041, RussiaArticle)

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