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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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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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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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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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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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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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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...
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A Novel Method for Determining the Three-dimensional Roughness of Rock Joints Based on Profile Slices
Rock joint roughness is one of the crucial parameters impacting the mechanical and hydraulic properties of discontinuities. It can be conveniently...
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Effects of Joint Roughness, Shear Rate, and Normal Stress on Shear Behavior and Acoustic Emission Characteristics in Two Parallel Coplanar Intermittently Jointed Rock: An Experimental Study
We conducted laboratory direct shear tests on two parallel coplanar intermittently jointed rock to investigate the effect of joint roughness and...
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Rate-Dependent Characteristics of Damage and Roughness Degradation of Three-Dimensional Artificial Joint Surfaces
A series of direct shear tests on specimens with artificial joints were performed to investigate the rate-dependent characteristics of damage and...
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Impact of Effective Stress and Surface Roughness on Nonlinear Gas Flow in Shale Fractures
The behavior of gas flow in fractures is crucial for evaluating shale gas production. This study focused on the coupling relationships between...
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Roughness Estimation of Multi-Scale Rock Joints based on SfM & MVS Photogrammetry with A DSLR Camera in Animation Mode
To recreate high-quality three-dimensional (3D) models of rock joints for quantitative roughness characterization more economically, portably, and...
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Study on shear mechanical characteristic evolution and influencing factors of rock joint surfaces under cyclic loading conditions
Determining the shear strength of rock joint surfaces is a fundamental problem in the fields of rock mechanics and engineering geology. To obtain the...
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Experimental study on shear weakening mechanism of local roughness for rough rock fracture surface in different directions
The morphological characteristics of the fracture surface play a crucial role in determining its shear strength and deformation. Additionally, the...
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An Improved Model for Evaluating the Hydraulic Behaviour of a Single Rock Joint Considering Contact Area Evolution During Shearing
The contact of rock joints during shearing induced by underground excavation significantly impacts the hydro-mechanical behaviour of fractured rock...
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Velocity-Dependent Effect on the Peak Shear Strength of Rock Joints Considering the Distribution Characteristics of Contact Joint Surface
This study aims to elucidate the mechanism of velocity-dependent peak shear strength (PSS) for rock joints by examining the three-dimensional...
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Non-stationarity, heterogeneity, scale effects, and anisotropy investigations on natural rock joint roughness using the variogram method
The variogram method is used to investigate the effect of non-stationarity, heterogeneity, scale-related parameters and anisotropy on roughness...
