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Geotechnical

Author(s): 
J Mgumbwa, A Page, L Human, MJ Dunn
Category: 
Geotechnical, Rock Mechanics
 
Evolution Mining's Frog’s Leg underground mine experienced an increase in the number of seismic events and rockburst occurrences during 2015. This was due to increased stress levels due to increasing mining depth and unfavourable mining geometry (mining the sole remaining
Author(s): 
Valérie Cettour Meunier
Category: 
Geotechnical, Rock Mechanics

Televiewer surveys consist of a continuous log of orientated, unwrapped images of drillhole walls. Two complementary methods are available: an ‘acoustic televiewer’ (ATV) which uses an acoustic signal from a rotating sonar transducer and an ‘optical televiewer’ (OTV) which uses a high resolution Read more... about 10 Advantages of Using Televiewer Surveys in Geotechnical Mining Studies

Author(s): 
Zack Tuckey, Justine Paul and Jeff Price
Category: 
Geotechnical

Remote sensing techniques such as ground-based photogrammetry and LiDAR have become routine supplements to traditional rock mass characterisation approaches, greatly enhancing discontinuity survey capability. Concurrently, discrete fracture network simulations, constructed using field Read more... about Discontinuity survey and brittle fracture characterisation in open pit slopes using photogrammetry

Author(s): 
Jeff Price
Category: 
Geotechnical, Water Management

Groundwater interaction is recognised as one of the key variables influencing slope design and management and is particularly significant in weaker rock masses. Understanding groundwater and pore pressure behaviour in rock masses is generally based on accepted theory related to flow through Read more... about Implications of groundwater behaviour on the geomechanics of rock slope stability

Author(s): 
Alan Naismith, Dr Graham Howell, Howard Marsden
Category: 
Geology, Mining, Geotechnical

Design and development of a decline shaft through poorly consolidated Kalahari deposits at Ghaghoo Diamond Mine. Read more... about Design and development of a decline shaft through poorly consolidated Kalahari deposits at Ghaghoo Diamond Mine.

Author(s): 
William Gibson
Category: 
Geotechnical
 
The assessment of rock mass strength is a key element for the analysis of many rock excavations, both open pit and underground. There have been attempts to assess this strength using a suitable rock mass strength criterion having input derived using a Rock Mass Classification
Author(s): 
William Gibson
Category: 
Geotechnical
 
Probabilistic methods combined with risk assessment are a better way to assess slope design in open pit mines compared to deterministic methods. These methods are suitable for use on evaluation of risk or when there is uncertainty in the input parameters.
 
Author(s): 
Michael Dunn
Category: 
Geotechnical
 
In underground mining, there are a number of uncertainties in the ground support design process and during implementation of ground support designs. The minimisation of geological uncertainty is one of the rock engineering principles outlined by Bieniawski (1992) and by Stacey
Author(s): 
Michael Dunn
Category: 
Geotechnical

SRK Consulting presentation delivered at the AusIMM Western Australian Ground Control Group (WAGCG) and Eastern Australia Ground Control Group (EAGCG) meetings in Adelaide, South Australia, 7 - 8 November, 2013. Read more... about The Cost of Uncertainty in Geotechnical Design and Implementation

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