... Abstract Based on the physical, mechanical and hydromechanical properties of the fractured rock, it simply introduced the statistics method, JRC method and fractal method and others for describing the fractured rock surface. Though comparing these methods above, the Duo-dimensionless...

...-term shear strength of fractured rocks is mainly composed by two mechanisms: one is the anti-shear due to the interlocking of microasperities, the other is the anti-friction owing to the relative shear of macro waves on the fractured rock surfaces. The study concludes that the relationship between...

... Abstract It is significant to study electromagnetic emission of tensile cracking in rock for seismic science and rock mechanics. The electromagnetic emission during single crack propagation of 2-D rock test specimen is studied. A model to describe the electromagnetic emission during...

... modeling mechanism tool-rock interaction tool force Reservoir Characterization excavation machine failure mode cuttability interaction hydraulic fracturing Simulation shear failure mechanical property discrete element method cutting Rock mechanics prediction numerical test...

... thickness has an influence on the crack path, failure modes and the initiation of anti-wing crack. Introduction Cracks can be classified into closed crack, open crack and filled crack according to the mechanical features of the joint surface. Current research on the propagation behavior of cracks...

...-solute transport processes of rock fractures. The focuses are put on stress and shear induced fluid flow anisotropy, transport pass channeling, and impact of considering different retardation mechanisms in single fractures of crystalline rocks, typically granites, due to its importance...

... which are mainly hazards of tunneling excavation, have caused great losses in many areas of the world (Singh B. & Goel R.K., 2006). Compared to rock burst in hard rocks, it is still insufficient to understand the failure mechanism of large deformation. Large deformation in tunnels is currently very...

... adsorption is between weak and strong adsorbs capacity. coal seam gas coal-bed methane mechanism coal bed methane resource complex reservoir carbon dioxide co 2 molecule ch 4 permeability coal bed methane Upstream Oil & Gas methane experiment injection coalbed methane different...

... Abstract Downhole testings and numerical simulations on flaking of iron sulfide concretions in different coal wall depths with different drum pick points were carried out in the study, and the flaking mechanism was analysed. The research showed that through failure damage area with intensive...

... Abstract Based on the geological conditions, underground mining situations, as well as the status of cracks and surface deformation of Chengchao Iron, a cantilever mechanical model is proposed. The bottom-up tubular collapse in the deep rock mass causes the horizontal tectonic stress release...

..., the failure process of toppling failure can be summarized as erosion notches → tension cracks → toppling failure → gravitational transport and accumulation. According to the toppling failure mode, the computing formula of factor of safety is deduced by means of the method of geo-mechanics. The results...

... Abstract Characteristics of stress evolution of "roof-coal" structure body lose stability process under force and rock burst preparation is analyzed by comparative test. Catastrophe theory is used to analysis instability mechanism and the multi-field stress control for rock burst prevention...

... Abstract The pregnant and sliding mechanism of rock landslides was firstly obtained, comparative analysis of modern typical rock landslides information. Then, the failure mechanism of rock landslides was simulated selected a typical rocky bedding landslide as prototype, which damaged mainly...

... coefficients were derived and compared with the test results. Finally, parametric studies with respect to the properties of filled joints and the incident wave on wave propagation through a single filled joint were carried out. 1 INTRODUCTION The mechanical behavior of rock mass is significantly affected...

... metals & mining Reservoir Characterization continuous subsidence mechanism closure state-of-the-art report ISRM hazard assessment method mining method Upstream Oil & Gas disorder presentation subsidence Van der Merwe monitoring closure commission hazard closure objective...

... ABSTRACT Opening of fractures induced by shear dilation can be a significant source of fracture permeability change. In this study, the zones of fracture shear slip were examined through three-dimensional thermo-mechanical analysis of a nuclear waste repository model using the finite element...

... Upstream Oil & Gas mechanism high earthquake intensity area deformation fracture mechanism vibration reservoir geomechanics trajectory jitter kelyphitic deformation consequent slope slippage inflection point typical deformation fracture mechanism deformation fracture Reservoir...

... Engineering criterion mechanism Upstream Oil & Gas heterogeneous material mesoscopic element failure process rock mass Reservoir Characterization strength heterogeneity numerical simulation slurry constitutive law mechanics rock particle Artificial Intelligence Chinese...