... practical methods for the analysis of joint surface roughness from three-dimensional Structure-from-Motion (SfM) photogrammetry models and two-dimensional cylindrical core scan photographs. In order to understand the variability of joint roughness on the surface of a discontinuity through drill core...

... relation single rock joint joint surface roughness hydraulic fracturing shear strength recovery research work fracture characterization friction specimen experimental result Upstream Oil & Gas direct shear test MPa Temperature Condition shear stress thermal condition cutoff time 1...

... ABSTRACT: It is difficult to effectively grasp the mechanical behavior of rock joints since it depends on such factors as the confining conditions, the material strength, the material friction, and the joint surface roughness. In this paper, the authors propose a mechanical model for the shear...

... condition test shear direction mechanical behavior loading condition deformation Reservoir Characterization stiffness displacement curve normal stress shear stiffness joint surface roughness surface roughness equation Rock Mechanics for Industrx, Amadei, Kranz, Scott & Smeallie (eds) ¸ 1999...

... controlled by the joint surface roughness (JRC) and a joint asperity foilure component controlled by the ratio JCS/ón The peak shear strength of joints can be directly determined by means of laboratory or in situ tests; alternatively the JRC and JCS parameters can be obtained on the basis of experimental...