Application of alternative methods for determination of rock quality designation (RQD) index: a case study from the Rožná I uranium mine, Strážek Moldanubicum, Bohemian Massif, Czech Republic

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F15%3A00447880" target="_blank" >RIV/68145535:_____/15:00447880 - isvavai.cz</a>

Result on the web

<a href="http://www.nrcresearchpress.com/doi/pdf/10.1139/cgj-2014-0377" target="_blank" >http://www.nrcresearchpress.com/doi/pdf/10.1139/cgj-2014-0377</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1139/cgj-2014-0377" target="_blank" >10.1139/cgj-2014-0377</a>

Result language

angličtina

Original language name

Application of alternative methods for determination of rock quality designation (RQD) index: a case study from the Rožná I uranium mine, Strážek Moldanubicum, Bohemian Massif, Czech Republic

Original language description

A comparison of rock quality designation (RQD) parameters obtained by drill core analysis and the RQD determined using alternative methods is presented using metamorphic rocks such as migmatized gneisses, migmatites, and amphibolites. Methods of borehole?wall imaging using high-resolution acoustic logging, optical televiewer, and simple video inspection as well as the structural analysis of exploration drift walls oriented subparallel to the analysed boreholes are used for alternatively evaluated RQD values. Results show that, in most cases, the RQD index measured directly on a drill core section reaches lower values (about 10%?30%) than the RQD evaluated by alternative methods. Significant differences in determination of the rock mass failure degree using classical and alternative methods may occur, especially in sections with higher frequency of the metamorphic foliation planes created by biotite-rich bands or by dark-coloured melanosome layers. The nature of biotite itself is favour

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DH - Mining industry including coal mining and processing

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Canadian Geotechnical Journal

ISSN

0008-3674

e-ISSN

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Volume of the periodical

52

Issue of the periodical within the volume

10

Country of publishing house

CA - CANADA

Number of pages

11

Pages from-to

1466-1476

UT code for WoS article

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EID of the result in the Scopus database

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