Počet záznamů: 1
Numerical modelling on the stability of an underground research facility excavation in Czech Republic
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SYSNO ASEP 0548181 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Numerical modelling on the stability of an underground research facility excavation in Czech Republic Tvůrce(i) Gong, Libin (UGN-S)
Waclawik, Petr (UGN-S) RID
Souček, Kamil (UGN-S) RID, ORCID
Vavro, Martin (UGN-S) RID, ORCID
Němčík, J. (AU)
Ram, Sahendra (UGN-S)
Kukutsch, Radovan (UGN-S) RID, ORCIDCelkový počet autorů 7 Zdroj.dok. Proceedings of the 2021 Resource Operators Conference. - Toowoomba, Queensland : University of Southern Queensland, 2021 / Aziz N. ; Mirzaghorbanali A. - ISBN 978-1-74128-335-8 Rozsah stran s. 329-348 Poč.str. 20 s. Forma vydání Online - E Akce Resource Operators Conference 2021 Datum konání 10.02.2021 - 12.02.2021 Místo konání University of Southern Queensland Země AU - Austrálie Typ akce WRD Jazyk dok. eng - angličtina Země vyd. AU - Austrálie Klíč. slova numerical modelling ; underground research facility ; stress state Vědní obor RIV DH - Báňský průmysl vč. těžby a zpracování uhlí Obor OECD Mining and mineral processing Institucionální podpora UGN-S - RVO:68145535 Anotace A new Underground Research Facility (URF) is planned to be constructed in the Rožná Mine, Czech Republic. It is essential to evaluate the feasibility of the current excavation design before the start of the excavation. Numerical simulation using the software FLAC3D was adopted to investigate the stability or the strength-stress ratio of the URF. Laboratory tensile strength and uniaxial compressive strength tests on the rock specimens at various inclinations of the weak planes combined with the Geological Strength Index (GSI) system provide reliable deformation and strength input parameters for the explicit continuum model. The well-known modified Hoek-Brown constitutive model was employed for the numerical evaluation of the URF stability. In situ three-dimensional stress tensors were measured from the field and applied to the model boundaries. Displacement/convergence and distribution patterns of the stress state and strength-stress ratio were analysed. It was found that the current URF layout is on the safe side and the total displacement is minor and acceptable. Locations with potentially low strength-stress ratios were mainly around the roadway-chamber intersections. The current study can provide a valuable reference to similar numerical works since such large-scale numerical simulations are rare, due to the complexity and the time-consuming nature of the study. Pracoviště Ústav geoniky Kontakt Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Rok sběru 2022 Elektronická adresa https://ro.uow.edu.au/coal/823/
Počet záznamů: 1