Extended rock mass characterisation from 3D images

2014 ◽  
pp. 421-426 ◽  
Author(s):  
A Gaich ◽  
M Pötsch ◽  
W Schubert
Keyword(s):  
Rock Mass ◽  
3D Images ◽  
Rock Mass Characterisation

scholarly journals APPLICATION OF RQD-NUMBER AND RQD-VOLUME MULTIFRACTAL MODELLING TO DELINEATE ROCK MASS CHARACTERISATION IN KAHANG Cu-Mo PORPHYRY DEPOSIT, CENTRAL IRAN / ZASTOSOWANIE METOD MODELOWANIA NUMERYCZNEGO ORAZ MODELOWANIA FRAKTALNEGO DO ANALIZY JAKOŚCI SKAŁ W CELU OKREŚLENIA CHARAKTERYSTYKI GÓROTWORU W OBSZARZE ZŁOŻA Cu-Mo W KAHANG, ŚRODKOWY IRAN

2013 ◽  
Vol 58 (4) ◽  
pp. 1023-1035 ◽  
Author(s):  
Amir Bijan Yasrebi ◽  
Andrew Wetherelt ◽  
Patrick J. Foster ◽  
Peyman Afzal ◽  
John Coggan ◽  
...  
Keyword(s):  
Rock Mass ◽  
Fractal Model ◽  
Mine Planning ◽  
Central Iran ◽  
Rock Classification ◽  
Porphyry Deposit ◽  
Planning And Design ◽  
Fractal Models ◽  
Rock Quality ◽  
Rock Mass Characterisation

Abstract Identification of rock mass properties in terms of Rock Quality Designation (RQD) plays a significant role in mine planning and design. This study aims to separate the rock mass characterisation based on RQD data analysed from 48 boreholes in Kahang Cu-Mo porphyry deposit situated in the central Iran utilising RQD-Volume (RQD-V) and RQD-Number (RQD-N) fractal models. The log-log plots for RQD-V and RQD-N models show four rock mass populations defined by RQD thresholds of 3.55, 25.12 and 89.12% and 10.47, 41.68 and 83.17% respectively which represent very poor, poor, good and excellent rocks based on Deere and Miller rock classification. The RQD-V and RQD-N models indicate that the excellent rocks are situated in the NW and central parts of this deposit however, the good rocks are located in the most parts of the deposit. The results of validation of the fractal models with the RQD block model show that the RQD-N fractal model of excellent rock quality is better than the RQD-V fractal model of the same rock quality. Correlation between results of the fractal and the geological models illustrates that the excellent rocks are associated with porphyric quartz diorite (PQD) units. The results reveal that there is a multifractal nature in rock characterisation with respect to RQD for the Kahang deposit. The proposed fractal model can be intended for the better understanding of the rock quality for purpose of determination of the final pit slope.

scholarly journals A review of in-situ testing of rock mechanical parameters in hydropower projects of Nepal

1999 ◽  
Vol 19 ◽  
Author(s):  
Kaustubh Mani Nepal
Keyword(s):  
Rock Mass ◽  
Rock Mechanics ◽  
Mechanical Parameters ◽  
In Situ Testing ◽  
Civil Structures ◽  
Rock Mass Characterisation ◽  
Rock Formations ◽  
Design And Construction ◽  
Rock Mechanical Parameters

In-situ testing of rock mechanical parameters is essential for rock mass characterisation. The rock mass characterisation is important in design and construction of underground works forming major component of Hydropower projects. The major civil structures of most of the hydropower projects planned in Nepal have to be founded on complex rock formations on fragile geological environments. In-situ rock mechanics tests carried out at various hydropower projects sites are described and the findings are summarised.

Sign in / Sign up

Export Citation Format

Share Document