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Analysis of Äspö Pillar Stability Experiment: Continuous thermo-mechanical model development and calibration
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SYSNO ASEP 0395542 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Analysis of Äspö Pillar Stability Experiment: Continuous thermo-mechanical model development and calibration Author(s) Blaheta, Radim (UGN-S) RID, SAI, ORCID
Byczanski, Petr (UGN-S)
Čermák, M. (CZ)
Hrtus, Rostislav (UGN-S)
Kohut, Roman (UGN-S) RID
Kolcun, Alexej (UGN-S) RID
Malík, Josef (UGN-S) RID
Sysala, Stanislav (UGN-S) RID, ORCIDNumber of authors 8 Source Title Journal of Rock Mechanics and Geotechnical Engineering. - : Science Press - ISSN 1674-7755
Roč. 5, č. 2 (2013), s. 124-135Number of pages 12 s. Publication form Online - E Language eng - English Country CN - China Keywords in situ pillar stability experiment ; model calibration by back analysis ; continuous mechanics ; damage of granite rocks ; Finite element method (FEM) Subject RIV BA - General Mathematics Institutional support UGN-S - RVO:68145535 DOI 10.1016/j.jrmge.2012.10.002 Annotation The paper describes an analysis of thermo-mechanical (TM) processes appearing during the Äspö Pillar Stability Experiment (APSE). This analysis is based on finite elements with elasticity, plasticity and damage mechanics models of rock behaviour and some least squares calibration techniques. The main aim is to examine the capability of continuous mechanics models to predict brittle damage behaviour of granite rocks. The performed simulations use an in-house finite element software GEM and self-developed experimental continuum damage MATLAB code. The main contributions are twofold.First, it is an inverse analysis, which is used for (1)verification of an initial stress measurement by back analysis of convergence measurement during construction of the access tunnel and (2)identification of heat transfer rock mass properties by an inverse method based on the known heat sources and temperature measurements. Second, three different hierarchically built models are used to estimate the pillar damage zones, i.e. elastic model with Drucker–Prager strength criterion, elasto-plastic model with the same yield limit and a combination of elasto-plasticity with continuum damage mechanics. Workplace Institute of Geonics Contact Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Year of Publishing 2014 Electronic address http://www.sciencedirect.com/science/article/pii/S1674775513000103
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