Počet záznamů: 1
Modelling the Sensitivity of Underground Space Stability to the In Situ Stress Uncertainties: Case Study at the Bukov Underground Research Facility Phase II (Rožná Mine, Czechia)
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SYSNO ASEP 0546770 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Modelling the Sensitivity of Underground Space Stability to the In Situ Stress Uncertainties: Case Study at the Bukov Underground Research Facility Phase II (Rožná Mine, Czechia) Tvůrce(i) Gong, Libin (UGN-S)
Souček, Kamil (UGN-S) RID, ORCID
Waclawik, Petr (UGN-S) RID
Vavro, Martin (UGN-S) RID, ORCID
Staš, Lubomír (UGN-S) RID, ORCID
Němčík, J. (AU)
Ram, S. (IN)Celkový počet autorů 7 Zdroj.dok. Acta geodynamica et geomaterialia. - : Ústav struktury a mechaniky hornin AV ČR, v. v. i. - ISSN 1214-9705
Roč. 18, č. 3 (2021), s. 319-334Poč.str. 16 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova numerical modeling ; in situ stress ; strength-stress ratio ; roadway convergence ; stability model Vědní obor RIV DH - Báňský průmysl vč. těžby a zpracování uhlí Obor OECD Mining and mineral processing Způsob publikování Open access Institucionální podpora UGN-S - RVO:68145535 UT WOS 000729653600003 EID SCOPUS 85120807835 DOI 10.13168/AGG.2021.0022 Anotace Numerical modelling has been widely used in the underground excavation design, where the in situ stress state plays a crucial role in the stability analysis. However, determination of an exact
stress state for a specific geological region remains uncertain due to the complicated tectonic nature and measurement limitations. The stability is thus better analysed by considering the in situ
stress as a finite spectrum and pinpointing the possible worst-case scenario. The most probable scenarios of in situ stress states in the Rožná mine area were analysed based on the varying trends
in principal stress ratio and mean stress values obtained from four different measurement/analysis campaigns. The influence of different in situ stress judgement on the deformation and failure
characteristics of the Bukov Underground Research Facility (URF) (Phase II, Czech) were investigated by the finite volume program FLAC3D. Results show that the increased horizontal
stress anisotropy and the mean stress level jointly increase the overall deformation and lower the URF stability. Such influences on the roadway horizontal convergence are more considerable than
the vertical ones. A mathematical model considering mean stress and horizontal stress ratio was proposed to quantitatively describe the overall stability, especially useful for excavations possessing complicated configuration.
Pracoviště Ústav geoniky Kontakt Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Rok sběru 2022 Elektronická adresa https://www.irsm.cas.cz/index_en.php?page=acta_detail_doi&id=403
Počet záznamů: 1