S.A. Bornyakov 1, S.P. Primina 2, Yu.V. Chubakova 2
1Institute of the Earth's Crust, Siberian Branch of RAS, Irkutsk, Russia
2Irkutsk State University, Irkutsk, Russia
Bornyakov Sergey Alexandrovich,
candidate of geological and mineralogical sciences,
664033 Irkutsk, st. Lermontova, d. 128,
Institute of the Earth's Crust SB RAS,
Senior Researcher,
email: bornyak@crust.irk.ru.
Primina Svetlana Pavlovna,
Candidate of Geological and Mineralogical Sciences,
664003 Irkutsk, Lenin str., 3,
Irkutsk State University, Faculty of Geology,
dean,
еmail: svetlana.primina@gmail.com.
Chubakova Julia Vitalievna,
Master's student caf. Geology of Oil and Gas of the Geological Faculty of Irkutsk State University,
664003 Irkutsk, Lenin str., 3,
email: ychubakova@mail.ru.
Abstract. Physical modeling of the process of formation of the shear zone in single-layer and multilayer models of models is carried out in order to elucidate the features of fault formation in the rheologically heterogeneous sedimentary cover of the platform over the active fractures of the foundation. Model materials were montmorillonite clay water paste, wet sand and their composite. On the example of single-layer models, it is shown that the thickness of the deformable layer determines the width of the shear zone, the time of the onset of rupture formation in it and the duration of the implementation of the stages of its development, and its rheological properties determine the features of its internal discontinuous structure. The results of modeling on rheologically heterogeneous multilayer models showed that the width of the shear zone formed in them does not remain constant in vertical and is determined by the properties of the model material.
Keywords: aboutthe cage cover, oil fields, physical modeling, shear zone, stageand rupture formation, zone width.
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Bornyakov S.A. Features of rupture formation in a rheologically heterogeneous sedimentary cover over active foundation faults: according to the results of physical modeling [Electronic resource] / S.A. Bornyakov, S.P. Primina, Yu.V. Chubakova
// Geology and Environment.— 2022.— V. 2, No. 3.— P. 7–19. DOI 10.26516/2541-9641.2022.3.7
Access Mode: http://geoenvir.ru/archive/g&e22-2-3/bornyakov22-3.htm (30.09.2022).