Numerical investigation of the effect of joint geometrical parameters on the mechanical properties of a non-persistent jointed rock mass under uniaxial compression

Bahaaddini, M.; Sharrock, Glenn; Hebblewhite, Bruce

doi:10.1016/j.compgeo.2012.10.012

Cited by 321 publications

(104 citation statements)

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“…The analysis shows that the failure mode and the failure mechanism are under the effect of the continuity of the rock-bridge. Also, a number of experimental studies have been carried out to investigate the crack initiation, propagation and coalescence in different loading condition (Yang et al, [13,14]; Fujii and Ishijima, [15]; Wasantha et al, [16]; Zhang and Wong [17,18], Bahaaddini et al [19], Sarfarazi et al [20]). Since this rock segments have different configuration in shear surface, therefore we come up with this question that weather the rock bridge configuration influences the shear properties along the shear surface.…”

Section: Figmentioning

confidence: 99%

Sliding Phenomena in Intermittent Rock Joint

Sarfarazi¹,

Schubert²

2016

Period. Polytech. Civil Eng.

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Section: Figmentioning

confidence: 99%

Sliding Phenomena in Intermittent Rock Joint

Sarfarazi¹,

Schubert²

2016

Period. Polytech. Civil Eng.

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“…The model consists of two opposite sides: A and B. Respective parts of the contact plane are connected by normal spring stiffness (Kn) and tangent stiffness (Ks) with elements S and T, which represent shear strength and tensile strength limits. Utilizing such connections allows for the simulation of interlayer slips and the simulation of cavity formation between the interacting layers of the model [10][11][12].…”

Section: Geological and Mining Conditionsmentioning

confidence: 99%

Influence Analysis of Mine Flooding from the Environmental Standpoint: Surface Protection

Wesołowski

Mielimąka

Jendruś

et al. 2018

Pol. J. Environ. Stud.

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Water that floods the mining complexes is drained on a constant basis when a mine is still active, but the situation changes the moment the mine is closed. This article presents the influence that flooding of mine workings has on a surface of a mining area using computer simulation. The evaluation of potential changes to the surface and scale of this phenomenon has been done using as examples the exploitation of mine deposit layers 702, 705, and 718 of the old Gliwice and Pstrowski mines. The performed numerical simulation showed that using numerical modeling of rock mass demonstrates the possibility of predicting uplifting of the surface caused by flooding of underground workings. Maximum designated value of surface uplifting amounts to around 34 mm/m. This value is relatively small and does not exceed 2% of subsidence caused by previous mining activity.

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“…Chen et al systematically studied the effects of joint orientation and joint persistence on the cracking process in jointed rock masses by uniaxial compression tests, and they concluded that the cracking process and failure mode were more strongly affected by joint orientation than joint persistence, especially when the joint dip angle was larger than 45 • [20]. Bahaaddini et al investigated the influence of geometric parameters of joints on the rock mass failure mechanism, the unconfined compressive strength, and the deformation modulus using the discrete element method [21]. They found that the failure mode was principally determined by the step angle and the joint orientation with respect to the applied principal stress direction.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Joint Dip Angle on the Mechanical Behavior of Infilled Jointed Rock Masses under Uniaxial and Biaxial Compressions

et al. 2018

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Due to the complex formation process of a rock mass, a large number of fissures, joints, faults, other defects exist and the defects commonly contain infilled materials. The jointed rock masses are in a complex geological environment, in which the geometric distribution and the boundary condition can greatly affect the mechanical behavior of the infilled jointed rock mass. In this study, the infilled jointed rock mass specimens with different dip angles are prepared using similar materials, and the uniaxial and biaxial compression tests on the specimens are conducted. The effect of the joint dip angle on the mechanical behavior of the infilled jointed rock mass under uniaxial and biaxial compressions is investigated. The results show that the uniaxial compressive strength shows a W-shaped variation, and the biaxial compressive strength shows a V-shaped variation with an increase in the dip angle. Most of the cracks appear in pairs around the joint and occur symmetrically in a bilateral distribution, and the existence of the infilled joints induces a nonlinear mechanical behavior in the specimen. In addition, the specimens exhibit three failure modes under uniaxial compression: splitting failure, step-path failure and planar failure. The specimens present two failure modes under biaxial compression: splitting failure and planar failure.

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Numerical investigation of the effect of joint geometrical parameters on the mechanical properties of a non-persistent jointed rock mass under uniaxial compression

Cited by 321 publications

References 30 publications

Sliding Phenomena in Intermittent Rock Joint

Sliding Phenomena in Intermittent Rock Joint

Influence Analysis of Mine Flooding from the Environmental Standpoint: Surface Protection

The Effect of Joint Dip Angle on the Mechanical Behavior of Infilled Jointed Rock Masses under Uniaxial and Biaxial Compressions

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