Results 61 to 70 of about 274 (138)

Numerical Simulation of Shear Behavior and Permeability Evolution of Rock Joints with Variable Roughness and Infilling Thickness

Geofluids, 2018
The mechanical properties and permeability evolution of sand-infilled rock joints during the shear process is an important issue in rock engineering, such as it pertains to hydraulic fractures filled with proppant.
Jingyi Cheng, Hongwei Zhang, Zhijun Wan
doaj   +1 more source

Nonlinear shear behavior of rock joints using a linearized implementation of the Barton–Bandis model

Journal of Rock Mechanics and Geotechnical Engineering, 2017
Experiments on rock joint behaviors have shown that joint surface roughness is mobilized under shearing, inducing dilation and resulting in nonlinear joint shear strength and shear stress vs. shear displacement behaviors.
Simon Heru Prassetyo, Marte Gutierrez, Nick Barton   +2 more
doaj   +1 more source

A Fractal Topology-Based Method for Joint Roughness Coefficient Calculation and Its Application to Coal Rock Surfaces

Modelling
The accurate evaluation of the Joint Roughness Coefficient (JRC) is crucial for rock mechanics engineering. Existing JRC prediction models based on a single fractal parameter often face limitations in physical consistency and predictive accuracy.
Rui Wang, Jiabin Dong, Wenhao Dong
doaj   +1 more source

Failure behaviour and crack propagation mechanism of non-persistent rough joints under direct shear: Insights from FEM–CZM method

KSCE Journal of Civil Engineering
Joint roughness and aperture critically influence the shear failure and crack propagation of non-persistent joints, affecting rock mass strength and stability.
Changsheng Wang, Xin Sun, Tingfang Liu, Shubo Zhang   +3 more
doaj   +1 more source

Investigating the Mechanical and Failure Evolution of Saw-Tooth Jointed Rock Materials: A Numerical Study Under Uniaxial Compression

Applied Sciences
Joint roughness coefficient (JRC) and inclination exert a decisive influence on the stability and safety of rock mass engineering. Simulations of uniaxial compression were conducted on saw-tooth-shaped joint specimens using a calibrated particle flow ...
Yunda Dong, Pu Yuan, Aobo Li, Changning Chen   +3 more
doaj   +1 more source

Correlation between the Joint Roughness Coefficient and Rock Joint Statistical Parameters at Different Sampling Intervals

Advances in Civil Engineering, 2019
Joint roughness coefficient (JRC) is a major factor that affects the mechanical properties of rock joints. Statistical methods that are used to calculate the JRC increasingly depend on a sampling interval (Δx). The variation rules of fitting parameters a,
Man Huang, Cia-chu Xia, Peng Sha, Cheng-rong Ma, Shi-gui Du   +4 more
doaj   +1 more source

Particle Transport in Self-Affine Rough Rock Fractures: A CFD–DEM Analysis of Multiscale Flow–Particle Interactions

Fractal and Fractional
Understanding particle transport in rough-walled fractures is essential for predicting flow behavior, clogging, and permeability evolution in natural and engineered subsurface systems.
Junce Xu, Kangsheng Xue, Hai Pu, Xingji He   +3 more
doaj   +1 more source

Revisiting scale effect on joint roughness coefficient and shear strength considering sampling methods and geometric characteristics

Journal of Rock Mechanics and Geotechnical Engineering
The scale effect on shear strength of rock joints is well-documented. However, whether scale effects are negative, positive, or even exist or not is still controversial. Joint roughness significantly influences the shear strength of rock joints. Compared
Qing Lü, Xueheng Cai, Luxiang Wu, Jun Zheng, Bo Li   +4 more
doaj   +1 more source

Determining the surface roughness coefficient by 3D Scanner

Geologija, 2010
Currently, several test methods can be used in the laboratory to determine the roughness of rock joint surfaces.However, true roughness can be distorted and underestimated by the differences in the sampling interval of themeasurement methods. Thus, these
Karmen Fifer Bizjak
doaj  

Determination of deformation modulus and characterization of anisotropic behavior of blocky rock masses

Горные науки и технологии
The anisotropy in the deformational behavior of blocky rock masses has been comprehensively investigated. The uniaxial deformation modulus was selected as the key parameter.
Omid Ahrami, Hossein Javaheri Koupaei, Kaveh Ahangari   +2 more
doaj   +1 more source