The influence of drilling technology on the qualitative assessment of the rock mass

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F24%3A00586609" target="_blank" >RIV/68145535:_____/24:00586609 - isvavai.cz</a>

Výsledek na webu

<a href="https://ro.uow.edu.au/coal/915/" target="_blank" >https://ro.uow.edu.au/coal/915/</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The influence of drilling technology on the qualitative assessment of the rock mass

Popis výsledku v původním jazyce

A comparison of rock quality designation (RQD) parameters obtained from drill core analysis and the RQD determined from the walls of boreholes are presented in various type of rock mass. The borehole-walls imaging were carried out on the basis of optical and acoustic televiewer records evaluation. A comparison of the RQD calculated from the drill core and the RQD from the optical and acoustic televiewer records shows that the RQD values from the drill core are on average 30% lower. Significant differences were recorded particularly near the surface, or near mine excavations. The RQD parameter for rocks of the borehole walls boreholes was determined according to used methodology for each meter of the evauated borehole length separately. Open fractures identified by acoustic and optical televiewer were included in the RQD and frequency of dislocations calculation. Results show the impact of drilling technology on the the qualitative classification of the rock mass.

Název v anglickém jazyce

The influence of drilling technology on the qualitative assessment of the rock mass

Popis výsledku anglicky

A comparison of rock quality designation (RQD) parameters obtained from drill core analysis and the RQD determined from the walls of boreholes are presented in various type of rock mass. The borehole-walls imaging were carried out on the basis of optical and acoustic televiewer records evaluation. A comparison of the RQD calculated from the drill core and the RQD from the optical and acoustic televiewer records shows that the RQD values from the drill core are on average 30% lower. Significant differences were recorded particularly near the surface, or near mine excavations. The RQD parameter for rocks of the borehole walls boreholes was determined according to used methodology for each meter of the evauated borehole length separately. Open fractures identified by acoustic and optical televiewer were included in the RQD and frequency of dislocations calculation. Results show the impact of drilling technology on the the qualitative classification of the rock mass.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20701 - Environmental and geological engineering, geotechnics

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 2024 Resource Operators Conference

ISBN

978-1-74128-395-2

ISSN

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e-ISSN

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Počet stran výsledku

9

Strana od-do

220-228

Název nakladatele

University of Wollongong

Místo vydání

Wollongong

Místo konání akce

Wollongong

Datum konání akce

8. 2. 2024

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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