Modeling Spatial Variance and Investigating the Effects of Variability on Intact Rock Strength and Stability of Entries in a Longwall Mine

2020 ◽  
Vol 37 (5) ◽  
pp. 1557-1570
Author(s):  
Danqing Gao ◽  
Brijes Mishra
Keyword(s):  
Rock Strength ◽  
Intact Rock ◽  
Spatial Variance ◽  
Longwall Mine

Comparison of Intact Rock Strength Criteria for Pragmatic Design

2017 ◽  
Vol 143 (4) ◽  
pp. 06016029 ◽  
Author(s):  
Robert Bertuzzi ◽  
Kurt Douglas ◽  
Garry Mostyn
Keyword(s):  
Rock Strength ◽  
Intact Rock ◽  
Strength Criteria

scholarly journals GEOLOGICAL CONTROLS ON INTACT ROCK STRENGTH. THE EFFECT OF ANISOTROPY

2004 ◽  
Vol 36 (4) ◽  
pp. 1826
Author(s):  
χ. Σαρόγλου ◽  
Π. Μαρίνος ◽  
Γ. Τσιαμπάος
Keyword(s):  
Mechanical Properties ◽  
Rock Strength ◽  
Dynamic Properties ◽  
Intact Rock ◽  
Metamorphic Rocks ◽  
Deformation Characteristics ◽  
Strength Anisotropy ◽  
Ongoing Research ◽  
Strength And Deformation ◽  
Anisotropic Rocks

The factors that influence the strength and deformation of the intact rock are the mineral composition, the fabric, the grain size and the degree of alteration and weathering. Anisotropy is a characteristic of intact foliated metamorphic rocks (slates, gneisses, phyllites, schists). The current paper deals with the pronounced effect of the fabric of anisotropic rocks on the strength and deformation characteristics of intact rocks. It is part of ongoing research in the Department of Geotechnical Engineering, National Technical University of Athens. Testing was used to establish the anisotropic behaviour of selected metamorphic rocks. The effect of anisotropy on various mechanical properties (strength, deformation) and dynamic properties (wave velocity) was examined. The degree of strength anisotropy of these rocks can be indirectly estimated, by wave propagation through the rock, and thus they can be classified by means of geological and geotechnical indexes.

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