Modeling the Äspö Pillar stability experiment
2010 (English)In: Rock Mechanics in Civil and Environmental Engineering - Proceedings of the European Rock Mechanics Symposium, EUROCK 2010, 2010, 787-790 p.Conference paper (Refereed)
This paper presents results of the 1st stages ofTaskAof the Decovalex 2011 project, the numerical modeling of the Äspö Pillar Stability experiment performed by the Äspö Hard Rock Laboratory of the Swedish Nuclear Fuel and Waste Management Company (SKB). The objective is to perform back calculation of the Äspö pillar behavior using state of the art numerical modeling techniques for the material behavior. The work is divided into three stages and it is the first stage of thework that will be presented in this paper. Seven international teams from six different countries participated in the task and contributed to the results presented in this paper, concerning back calculation of uniaxial and triaxial compressive core testing and elastic back calculation of the stress path for excavation-induced stresses. The results are useful for understanding the occurrence of spalling in the upper part of the pillar during excavation and the stress path modeling gives the first approximation of the yielding strength of the pillar. The calculated results agree well with observations measured during experiment.
Place, publisher, year, edition, pages
2010. 787-790 p.
Back calculation, Core testing, Hard rocks, International team, Material behavior, Numerical modeling, Pillar stability, State of the art, Stress paths, Swedish nuclear fuel and waste managements, Yielding strength, Excavation, Numerical models, Rock mechanics, Waste management, Experiments
IdentifiersURN: urn:nbn:se:kth:diva-150312ScopusID: 2-s2.0-84860135527ISBN: 978-041558654-2OAI: oai:DiVA.org:kth-150312DiVA: diva2:742675
European Rock Mechanics Symposium, EUROCK 2010, 15 June 2010 through 18 June 2010, Lausanne, Switzerland
QC 201409022014-09-022014-09-012014-09-02Bibliographically approved