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Horizontal stress in Czech part of Upper Silesian Basin
Staš, Lubomír ; Kolcun, Alexej ; Šimkovičová, Jarmila ; Souček, Kamil
The results of measurement by hydrofracturing method in the area of Czech part of USB are discussed. The measurements proved some general direction of the primary stress impact: high anisotrophy of horizontal stress, relatively high ratio of horizontal to vertical stresses ((SH+Sh)/Sv÷2). Horizontal stresses in the zones intensely disturbed by mining activity indicate magnitudes corresponding only to effect of overburden load in elastic model of rock mass. Orientation of horizontal stress either corresponds direction of presumed effect of superposition of Carpathian nappes or copiers direction of vicinity tectonic faults usually near of them.
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Náročné uplatnění iteračních řešičů v geotechnice
Blaheta, Radim ; Byczanski, Petr ; Jakl, Ondřej ; Kohut, Roman ; Kolcun, Alexej ; Krečmer, Karel ; Starý, Jiří
In many fields of science and engineering, we can see challenging tasks, which require application of mathematical modelling. The physical phenomena are simulated with the aid of the finite element method and this simulation leads to huge computational demands, which are concentrated mainly to the solution of large-scale systems of equations. For such systems, we need high performance iterative solvers.
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