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Browsing by Subject "3D FEM analysis"

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  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Analiza warunków stateczności wybranych komór KS »Wieliczka« na podstawie przestrzennych obliczeń numerycznych
    (Wydawnictwa AGH, 2009) Cieślik, Jerzy; Flisiak, Jerzy; Tajduś, Antoni
    This paper presents results of 3D stability analysis of selected KS Wieliczka caverns performed by numerical calculations. In first part of this paper results of geometrical modeling of caverns Warszawa, Wisła, Budryka and its vicinity were presented. In the second part, the results of numerical calculations allowed evaluation of the conditions of Warszawa, Wisła and Budryka chambers stability.
  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Ocena zagrożenia zapadliskowego wybranych komór KS »Wieliczka« w oparciu o obliczenia numeryczne
    (Wydawnictwa AGH, 2009) Cała, Marek; Czaja, Piotr; Flisiak, Danuta; Kowalski, Michał
    The Ryncarz criterion is usually applied for estimation of discontinuous surface deformations hazard for underground caverns of Salt Mine Wieliczka. The criterion assumes that the broken zone slowly advances from cavern roof to surface level. This paper confirms that application of three-dimensional (3D) numerical modelling of processes occurring in the salt rock mass may be much better tool for that purpose. It must however utilise properly evaluated mechanical and time-dependant properties of the salt rock mass. The 3D modelling also allows to take under consideration the size and shape of caverns. The Finite Difference code FLAC3D was applied for numerical calculations and shear strength reduction method was selected to estimate discontinues deformations hazard. Two cases were analysed: one cavern Neustadter and a group of caverns consisted of Rainer I Upper, Rainer I Lower and Skoczylas. The application of developed analysis method and factor of safety values allowed to confirm that discontinues deformations hazard for analysed cases is very low.