Počet záznamů: 1
Assessment of coal pillar behaviour at great depth using numerical models
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SYSNO ASEP 0519191 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Assessment of coal pillar behaviour at great depth using numerical models Tvůrce(i) Sahendra, R. (IN)
Ashok, K. (IN)
Waclawik, Petr (UGN-S) RID
Kukutsch, Radovan (UGN-S) RID, ORCID
Kajzar, Vlastimil (UGN-S) RID, ORCID
Němčík, J. (AU)Celkový počet autorů 6 Zdroj.dok. Rock Mechanics for Natural Resources and Infrastructure Development - Full Papers, Proceedings in Earth and Geosciences, 6. - Leiden : CRC Press/Balkema, 2019 / da Fontoura Sergio A.B. ; Rocca Richardo Jose ; Pavón Mendoza José - ISSN 2639-7749 - ISBN 978-0-367-42284-4 Rozsah stran s. 2812-2820 Poč.str. 9 s. Forma vydání Tištěná - P Akce International Congress on Rock Mechanics and Rock Engineering (ISRM 2019) /14./ Datum konání 13.09.2019 - 18.09.2019 Místo konání Foz do Iguassu Země BR - Brazílie Typ akce WRD Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova coal pillar ; monitoring ; numerical modelling Vědní obor RIV DH - Báňský průmysl vč. těžby a zpracování uhlí Obor OECD Mechanical engineering Institucionální podpora UGN-S - RVO:68145535 Anotace Room and Pillar method was used to develop shaft protection pillar, below 850 m from the surface at CSM mine of Upper Silesian Coal Basin of Czech Republic. First panel V was developed on rhomboid shaped pillars of different sizes by driving roadway of 3.5-4.5 m in height and 5.2 m in width. Field study was conducted using different geo-technical instruments. This study revealed that core of the pillar is softening too due to yielding characteristics. Further, to understand the behaviour of coal pillar, numerical modelling was carried out using FLAC3D. Mohr-Coulomb strain-softening and Mohr-Coulomb plasticity constitutive models were adopted for coal seam/poor strata and competent strata respectively. The extent of yielding of coal pillar was decided by the observed contour of the stresses and tensile/shears failure in the model. Results obtained on numerical models were validated and found to be in good tune with the actual monitored pillar behaviour. Pracoviště Ústav geoniky Kontakt Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Rok sběru 2020
Počet záznamů: 1