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Determination of joint roughness coefficient using a cost-effective photogrammetry technique
The presence of discontinuities in the rock mass is extremely crucial in many engineering applications of rock mechanics. The estimation of the joint...
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2D and 3D evaluation of joint roughness exposed by rock cores
Since rock joint surfaces are not universally exposed in engineering practice, these surfaces usually cannot be easily obtained or observed. However,...
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A New 3D Statistical Parameter for Determining Roughness of Joint Surfaces Considering Shear Direction and Asperity Features
The engineering rock mass is a multi-fracture body crisscrossed by geologic structure planes, and its safety is affected by the rock joints’...
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Preliminary Assessment of Joint Roughness Coefficient of Rock Slope Using UAV–SfM Photogrammetry Technique
Joint roughness coefficient (JRC) is an important criterion to determine the shear strength of rock, for example, as one of the inputs for the...
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Determination of roughness coefficient in 3D digital representations of rocks
The roughness property of rocks is significant in engineering studies due to their mechanical and hydraulic performance and the possibility of...
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Size effect of anisotropic rock joint with two-order roughness
The primary objective of this work is to improve the understanding of the characteristics of the joint anisotropy in two-order morphology and its...
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Close-Range Photogrammetry for 3D Rock Joint Roughness Evaluation
Photogrammetry-based methods using everyday photographic equipment and easily available software have gained relevance for roughness measurement of...
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Joint roughness profiling using photogrammetry
We propose an automated camera setup for photogrammetric roughness analysis in the laboratory environment. The developed fast and low-cost automation...
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Contribution of 3D Roughness Along Concrete-Rock Interface to the Sliding Stability of Concrete Gravity Dams
Current engineering practice in dam maintenance and safety evaluation generally neglects the contribution of three-dimensional (3D) roughness along a...
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New 2D joint roughness profiles based on pattern recognition technique
Surface roughness is a major factor controlling the shear strength of discontinuities. Various methods have so far been presented for determining...
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Estimation of the Lengths of Intact Rock Core Pieces and the Corresponding RQD considering the Influence of Joint Roughness
The lengths of intact rock core pieces (LIRCP) and the corresponding rock quality designation (RQD) are two essential indexes for gras** rock...
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Scale effects and spatial distribution characteristics of 3D roughness of natural rock fracture surfaces: statistical analysis
The roughness feature of a natural rock fracture surface is an important factor affecting the shear and poromechanical behavior of rock. The scale...
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Quantitative characterization method of 3D roughness of rock mass structural surface considering size effect
The surface morphology of the structural surface of the rock mass plays a crucial role in determining its macroscopic physical and mechanical...
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Roughness characterization and shearing dislocation failure for rock–backfill interface
Shearing dislocation is a common failure type for rock–backfill interfaces because of backfill sedimentation and rock strata movement in backfill...
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FDM-3D printing parameter optimization using taguchi approach on surface roughness of thermoplastic polyurethane parts
FDM (Fused Deposition Modelling) 3D Printing requires the special review of process parameters with taguchi optimization for optimal print surface...
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Role of heterogeneity on joint size effect, and influence of anisotropy and sampling interval on rock joint roughness quantification
Rock joint roughness influences the mechanical and hydraulic properties of joints. To find reasons for the contradictory findings on roughness scale...
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Characterization of Joint Roughness Heterogeneity and Its Application in Representative Sample Investigations
Rock joint surface roughness is usually characterized by heterogeneity, but the determination of a required number of samples for achieving a...
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Anisotropic behavior of excavated layered rock mass subjected to compression considering the joint roughness
The failure mode of the surrounding rock disturbed by the excavation of layered fractured rock is dominated by the spatial distribution of the...
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Transfer film effects induced by 3D-printed polyether-ether-ketone with excellent tribological properties for joint prosthesis
Based on the building principle of additive manufacturing, printing orientation mainly determines the tribological properties of joint prostheses. In...
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A new approach for quantifying the two-dimensional joint roughness coefficient (JRC) of rock joints
The joint roughness coefficient (JRC) is the key factor in predicting the peak shear strength of a rock joint. In this paper, we present a new...
