Number of the records: 1
Alternative methods for RQD parameter determination
- 1.
SYSNO ASEP 0430261 Document Type A - Abstract R&D Document Type Není vybrán druh dokumentu Title Alternative methods for RQD parameter determination Author(s) Vavro, Martin (UGN-S) RID, ORCID
Souček, Kamil (UGN-S) RID, ORCID
Staš, Lubomír (UGN-S) RID, ORCID
Waclawik, Petr (UGN-S) RID
Vavro, Leona (UGN-S) RID
Koníček, Petr (UGN-S) RID, ORCID
Ptáček, Jiří (UGN-S) RIDNumber of authors 7 Source Title 5th International Colloquium on Geomechanics and Geophysics. GECO 2014, 5. - Ostrava : Ústav geoniky AV ČR, 2014 / Koníček P. ; Souček K. ; Heroldová N. - ISBN 978-80-86407-49-4
S. 53-54Number of pages 2 s. Publication form Print - P Action 5th International Colloquium on Geomechanics and Geophysics Event date 24.06.2014-27.06.2014 VEvent location Ostravice, Karolínka Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords rock quality designation (RQD ; rock fracturing ; rock mass classification ; geotechnical monitoring Subject RIV DH - Mining, incl. Coal Mining R&D Projects ED2.1.00/03.0082 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UGN-S - RVO:68145535 Annotation The Rock Quality Designation index (RQD) developed by Deere et al. [1] represents one of the basic parameters which enter into the calculation of rock mass quality by index rock mass classification systems RMR [2, 3] and Q [4]. The RQD is defined as the percentage of the sum of the lengths of intact core pieces longer than 100mm (4 inches) relative to the chosen length of evaluated drill core and originally, it was also defined for the purpose of rock mass quality classification. However, RQD is a single parameter value, which directionally depends on the borehole orientation towards the bedding or metamorphic foliation and reflects a rate of rock mass failure only stated on the basis of drill core fragmentation by discontinuities. Workplace Institute of Geonics Contact Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Year of Publishing 2015
Number of the records: 1