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<p>In this paper, a numerical code, RFPA2D (rock failure process analysis), was used to simulate the initiation and propagation of fractures around a pre existing single cavity and multiple cavities in brittle rocks. Both static and dynamic loads were applied ...
Reference: Journal of Rock Mechanics and Geotechnical Engineering 5 (2013) 262–276
<p>In this paper is presented mode 1 brittle creep fracture experiments along fracture surfaces that contain strength heterogeneities.The observations provide a link between smooth macroscopictime-dependent failure and intermittent microscopic stress-dependent ...
Reference: JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 116, B08215, doi:10.1029/2010JB008059, 2011
<p>Natural open joints in rocks commonly present multiscale self-affine apertures.The goal of this paper is to find a geometrical model of the complex aperture that describes at best the macroscopic properties (hydraulic conductivity, heat exchange) with the ...
Reference: Geophys. J. Int. (2011) 186, 1064-1072
The influence of the multiscale fracture roughness on the heat exchange when a cold fluid enters a fractured hot solid is studied numerically on the basis of the Stokes equation and in the limit of both hydrolubrication and thermolubrication. It is shown that ...
Reference: PHYSICAL REVIEW E 82, 036317 2010
<p>The paper presents summary of the work carried out by the author on the modelling of jointed rock mass with some field applications.</p>
Reference: International Journal of the JCRM vol.5 (2009) pp.39-51
Using an experimental setup which allows to follow optically the propagation of an interfacial crack front in a heterogeneous medium, it is shown that the fracture front dynamics is governed by local and irregular avalanches with large velocity fluctuations ...
Reference: PAGEOPH, 166(5-7): 777-799, 2009
<p>In this study, we are interested in the influence of a realistic geometry of the fracture on its hydraulic permeability. The morphology of fresh fractures is sampled and compared to a geometrical model that can be used in numerical codes for the fluid flow.</p ...
Reference: International Journal of Rock Mechanics & Mining Sciences 45 (2008) 422-430
To assess the role of the fault thickness on its mechanical behavior, we first present the results of an experimental modeling of a thick fault core. Our laboratory setup consists in an annular simple shear apparatus in which we can apply very large shear ...
Reference: Tectonophysics 426 (2006) 77-94
Infill materials found in natural rock joints may cause a reduction in joint shear strength, influencing rock mass stability. This paper reports a study aimed at developing a semi-empirical methodology for predicting the shear<br>strength of infilled joints, ...
Reference: Geotechnique, Institution of Civil Engineers, 55(3), 2005, 215-226.
This study includes conducting diametrical compression tests on notched Brazilian disk specimens. Moreover, the effect of confining pressure and temperature on crack initiation and propagation were also studied. The experimental results were compared with ...
Reference: Engineering Geology 81 (2005)