.... The advection effect highly depends on fluid flow in matrix and could be safely ignored due to the large permeability contrast between fracture and matrix. The diffusion effect is related to matrix diffusion coefficient, matrix porosity as well as the concentration contrast between fracture and matrix, and may...

... characteristic upstream oil & gas landslide knowledge management accumulation xiangning landslide technology beijing deformation accumulation china university wang beijing failure mechanism interlayer geology reservoir geomechanics loess plateau displacement instability concentration...

...’ compaction trend (e.g. Qian & Xu 1998 and Guo et al. 2012). The O 2 distribution in a conventional goaf gas CFD model shows a higher concentration and travels farther away from the face into the goaf at the maingate side, compared with that on the tailgate side (e.g., Balusu et al. 2002 and Balusu et al...

... measures. Thus, the development of protective measures to counteract the damaging effects of excessive stresses is necessary. Destress blasting is a long-established stress relief technique utilized in underground coal mining. Its primary objective is to shift stress concentration zones to the interior...

... concentration differential equation perdikaris inverse modeling 15th ISRM Congress 2023 & 72nd Geomechanics Colloquium. Schubert & Kluckner (eds.) © ÖGG Physics-informed machine learning of flow and transport problems Hongkyu Yoon Geoscience Research & Applications, Sandia National Laboratories...

... reservoir characterization composition strength roughness esmaeili hardness toronto mineralization hld upstream oil & gas reservoir geomechanics canada government concentration discrepancy inconsistency leeb hardness elemental composition international lithology discontinuity...

... government production logging solid waste management repository reservoir surveillance geology china government mathematics of computing hydraulic fracturing production monitoring fracture geological subdiscipline boundary concentration beijing coefficient repository induce numerical...

... upstream oil & gas subsurface corrosion materials and corrosion organic-rich rock well integrity rock type australia government corrosion inhibition concentration metals & mining coating resistance pty ltd cablebolt flowline corrosion hiscc polymer coated ramandi hydrogen...

...-and-fill mining method requires consideration of the mining sequence to mitigate the instability risk due to excessive stress concentration in stopes scheduled for production. This study covers the effects of production sequence on the crown pillar and the global mine stability using numerical modeling...

... underground laboratory in the world at present. The failure of structural planes in the excavation unloading and supporting process caused may lead to structural control failure, stress-structure failure, and so on. The structural planes can also promote stress concentration causing failure in the surrounding...

... Abstract Test the mechanical strength of carbonate rocks corroded by acid of different concentration. Study the effect of acid concentration on the mechanical parameters of carbonate rocks. The results show that: (1) Acid corrosion has a great influence on the mechanical strength of carbonate...

... coefficients on fracture surface, rock matrix and fracture-filling materials. We cannot identify all the parameters only from the results of in-situ tracer experiments. reservoir characterization concentration experiment coefficient matrix barium hydraulic fracturing tracer experiment uranine...

... by the influence of SRB where the environments are suitable for SRB to grow at high concentration. 1 Introduction For mineral extraction, the sustained integrity of support elements throughout the life of underground mines is crucial for maintaining safe access for personnel and equipment. Cable bolts are one...

... reservoir characterization vector concentration international journal outcrop terrestrial laser fisher photogrammetry rock mechanic mining science plane drone Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza (Eds) © 2020 ISRM, ISBN 978-0-367...

... types of fibers available, evaluating the strength parameters: uniaxial compression, traction and residual strength of the concrete specimens reinforced with steel and polypropylene fibers in different concentrations. As a result, PROPEX brand polypropylene fibers at a concentration of 6 kg/m 3 proved...

... is aligned with the far-field intermediate principal stress. In this case, the stress concentrations around the tunnel are maximized and stress-induced failure is more likely to occur. To minimize this effect, there have been recommendations to align the tunnel with the major principal stress (goodman, 1989...

... are numerically obtained by a transient model fully describing chemical osmosis and advection. upstream oil & gas concentration equilibrium numerical simulation flow in porous media osmotic efficiency semipermeability drilling fluids and materials reservoir characterization equation 5...

... concentration near the excavated borehole, formation and propagation of slot-shaped borehole breakout as a result of particle crushing and removal, and formation of compaction band at the tip of the breakout with the ceasing growth of breakout length. The dynamic change of stress with breakout slot extending...

... to that in isotropic body under the same boundary conditions. Since there could be no universal parameter appropriate for arbitrary geometries and boundary conditions, it is reasonable to consider simple typical problems: primarily, stress concentration at a well (cylindrical opening) contour. reservoir...

... rockmass installation safety instrumentation mesh strength gobbi hoek rock mechanic geometry congresso brasileiro br 116 cnica cobrameg concentration upstream oil & gas formation rastro formation figure 7 shear strength Abstract Since the road BR 116 was build...