... angles (55°, 35°, 20°, and 10°), whereas a significantly less deformation had taken place in samples with bedding layers oriented in higher angles (83°). Moreover, at 55° and 35° bedding orientations, deformation was mainly observed within the middle region of specimens and at 20° and 10° bedding...

... Abstract Firstly got the rock specimens with intrinsic fracture, then carried out seepage tests with high seepage pressure (>1MPa), in order to study the seepage regulation with different seepage pressures and confining pressures. The result stated that the relation between coefficient...

... by Xie he ping. Mechanical characteristics and energy properties of granite under uniaxial compression after high temperature have been researched. 2 Experimental Condition and Method In our investigation, we have used cylindrical rock specimens, 50mm long with diameters of 25 mm. There were 45...

... drilling fluid formulation adsorption isotherm mohr-coulomb failure criterion strain gauge mechanical property specimen borehole stability desiccator shale specimen bedding plane Rock Characterisation, Modelling and Engineering Design Methods Feng, Hudson & Tan (Eds) © 2013 Taylor & Francis...

... into the instability of hard rock specimens in tensile failure. Griebel M, Knapek S et al (2007) adopted numerical simulation and comparison to study the particle settings, algorithm selections and application of parallel computing in the calculation of dynamic characteristics for particle materials. Hazzard JF, Young...

... to increasing stress on the hole surface while the stress on the outer surface was maintained constant. No fluid injection was allowed from the hole into the rock. The outer surface of the specimen was hydraulically isolated, too. The fracturing of the specimen was thus caused by applied mechanical stresses...

... halite Emission Characteristic loading salt rock cyclic loading AE event acoustic emission characteristic energy rate Upstream Oil & Gas Rock mechanics specimen uniaxial compression count rate strength Deformation Stage experimental study thenardite Rock Characterisation, Modelling...

.... segmentation damage variable specimen hydraulic fracturing pixel characterization particle gray value fracture soil-rock mixture information original ct image multiple-threshold segmentation rock ratio Artificial Intelligence CT image loading stage image processing messy particle digital...

... Abstract Triaxial compression test were carried out by using serve-control rock mechanics test system, through the stress and strain curve and failure characters of rock specimens, in order to analyze the influence of strength and deformation with different fissure angle and length under...

...), it is possible to isolate the radioactive wastes from human environment for a long time. Engineering boundary condition buffer waste management axial stress coefficient repository flexible-swelling test specimen saturation underground repository infiltration equilibrium stiffness coefficient...

... Abstract The uniaxial compression constant amplitude fatigue test was adopted to make cyclic loading tests for pre-fractured 30°, 45°, 60° and 90° rock-like model specimens and the corresponding anchored model specimens. It was indicated that the processes of fatigue damage of fractured rock...

... the interventions between the tip fields and hence the crack growth pattern. An investigation on propagation behavior of filled cracks is carried out through fracture tests of rock-like specimen under uniaxial compression. The digital photographical technique is used to quantify the information of propagation paths...

... are carried out on rock specimens drilled from rhyolite blocks taken from the site of Daxiangling Niba mountain tunnel. The strength and deformation properties of microfissure rock are obtained; the influences of factors such as the initial angle of the microfissure and morphology on the strength...

... strength numerical simulation Wellbore Design acoustic emission specimen fracture int Reservoir Characterization Upstream Oil & Gas Simulation granite Rock Mech micro crack Sci stress-strain curve brittle rock uniaxial compression test Rock Characterisation, Modelling and Engineering...

... criterion, which neglects the role of σ 2 , predicting only the lower limit of rock strength for a given σ 3 . strength crystalline rock characteristic Upstream Oil & Gas variation specimen compressive strength Coconino sandstone principal stress Reservoir Characterization Triaxial...

... prism was modeled with the smoothed particle hydrodynamics (SPH) method, and the mill structure was modeled by the finite element method (FEM) method. The interaction between the coal specimen and the roller was considered by introducing a master-slave contact boundary. The main aims of this study...

... isotropic model is characterized by 5 independent elastic constants. Transversely model is the most popular model for schistose rock like schist, gneiss, shale, etc. [1–4] In order to determined 5 independent elastic constants, at least 3 specimens that bedding plane inclined parallel, vertical...

... & Simulation strength Rock mechanics destabilization Proportion steep slope stability metals & mining Wellbore Design Chinese Journal experiment excavation simulation experiment specimen rock mass deformation model material large-three-dimensional physical simulation experiment Rock...

...ISRM-Sponsored International Symposium on Rock Mechanics: Rock Characterisation, Modelling and Engineering Design Methods ABSTRACT Impression creep test, which involves loading on a small area of the specimen with a flat- tipped cylindrical punch, is a new method used for rocks in this research...

... ABSTRACT In this paper the results of a study on two main acoustic emission (AE) parameters – hit rate and energy- measured in laboratory on rock samples prior to failure are presented. Uniaxial test were carried out on Lavasan granite specimens, dimensions 45 mm diameter and 100 mm height...