Alternative methods for RQD parameter determination
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F14%3A00430261" target="_blank" >RIV/68145535:_____/14:00430261 - isvavai.cz</a>
Result on the web
—
DOI - Digital Object Identifier
—
Alternative languages
Result language
angličtina
Original language name
Alternative methods for RQD parameter determination
Original language description
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 thepercentage 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.
Czech name
—
Czech description
—
Classification
Type
O - Miscellaneous
CEP classification
DH - Mining industry including coal mining and processing
OECD FORD branch
—
Result continuities
Project
<a href="/en/project/ED2.1.00%2F03.0082" target="_blank" >ED2.1.00/03.0082: Institute of clean technologies for mining and utilization of raw materials for energy use</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů