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Showing 1 to 7 of 7 for “"Brittle Rocks"”.
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Experimental investigation of damage evolution during strain burst in brittle rocks for deep mines
… release of stored strain energy during dynamic brittle failure of rocks, has become more prevalent and created considerable safety risks damaging underground infrastructures. This research focuses on the development of experimental methodologies to better understand the fundamental knowledge …
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Fracture Initiation and Propagation in Low Porosity Crystalline Rocks: Implications for Excavation Damage Zone (EDZ) Mechanics
… processes of underground openings in hard rocks at depth are commonly associated with introducing some damage to the surrounding rock mass through the initiation and propagation of fractures parallel to the excavation boundary due to disturbance to the in situ stress condition, as well as …
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An anisotropic damage model for rock
… description of microcracking processes in brittle rock under a general loading path. Experimental data and micromechanical models are reviewed to quantify the effect of microcracking on the material stiffness and the mechanisms of microcrack formation in brittle rocks under compression are …
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Investigating the Influence of Mechanical anisotropy on the Fracturing Behaviour of Brittle Clay Shales with Application to Deep Geological Repositories
… which allows the explicit simulation of brittle fracturing and associated seismicity. The numerical experimentation firstly focused on the laboratory-scale analysis of failure processes (e.g., acoustic activity) in brittle rocks, and on the role of strength and modulus anisotropy in the …
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Laboratory Strength Testing of Argillaceous Limestone Under Varying Saturation, Scale, Loading Rate, and Confinement Conditions
… contain contaminants. The excavation of hard rocks at depth can induce damage to the surrounding rock mass. This damage corresponds to the initiation and propagation of fractures and is related to in situ stress conditions and excavation processes. Heterogeneous rock masses can further …
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Numerical simulation of fluid flow, proppant transport and fracture propagation in hydraulic fractures for unconventional reservoirs.
… This limits the fracture propagation model to brittle rocks and neglect plastic deformations. Thus, in the present study, the fracture propagation was modelled using the extended finite element method (XFEM) and cohesive zone model (CZM), which can model the plastic deformations in the ductile …
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Ground-water geology along the northwest foot of the Blue Ridge between Arnold Valley and Elkton, Virginia
… crystalline and lower Cambrian elastic rocks. It is a major water catchment area for the eastern edge of the Shenandoah Valley and is chiefly a National Forest preserve. Cambriancarbonate rocks and fine-grained elastics underlie the relatively level areas between the mountains and the …