... shallower covers, the measured horizontal displacements within the longwall abutment pillar are one order of magnitude higher than those measured under deep cover. Longwall-induced horizontal displacements occur along weak-to-strong rock interfaces; the sharper the bending stiffness contrast across...

... & gas united states government casing design geological subdiscipline chain pillar coal seam pittsburgh coal seam panel mining horizontal displacement deep cover longwall panel reservoir characterization gas well relative horizontal displacement coal seam horizon caliper survey...

... that the longwall-induced horizontal movements are dependent on the depth of cover and overburden geology and concentrate along strong-to-weak rock interfaces. The study also shows that large horizontal displacements are more likely to occur under shallow cover with wet and inclined overburden strata, which may...

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... casings, which were verified by in-mine observations. complex reservoir Longwall Mining shale gas horizontal displacement shale gas well subsidence displacement longwall panel claystone layer stability Subsurface movement barrier pillar Upstream Oil & Gas gas well coal seam panel...

... are maintained. ground transportation road tunnel excavation lam tin tunnel Hong Kong Reservoir Characterization Upstream Oil & Gas assessment mtr tunnel tunnel excavation reservoir geomechanics influence water-oil saturation metro line water-oil saturation rail transportation horizontal...

.... The measured horizontal displacements were found to be larger than the vertical displacements, probably a consequence of the strong roof strata at this location. Analysis of the horizontal strain components indicated that most of the strain values were less than 0.5%. The progressive increase in rib sloughing...

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... installed in headgate entries around the stage loader and 60-m outby of the longwall face (solid). reservoir geomechanics displacement Reservoir Characterization modeling Illinois fault plane metals & mining model 1 Upstream Oil & Gas gate entry horizontal displacement cross-section...

... Abstract Fully grouted roof bolts increase the stability of a bedded mine roof by providing resistance to both vertical and horizontal displacements. The bolts provide suspension reinforcement from axial loads and lateral reinforcement from shear resistance effects. The lateral reinforcement...

... from one situation to the other. Calibration of numerical models with more laboratory tests will validate them to be used in later developments. numerical evaluation horizontal displacement normal stress sawtooth profile shear test Upstream Oil & Gas scale effect joint surface...

... horizontal displacement Artificial Intelligence karst region Longitudinal wave carbonate rock mass Reservoir Characterization classification international journal rock mass Upstream Oil & Gas Croatia classification result carbonate rock deformation modulus bobova tunnel karst Croatian...

... demonstrated the importance of rock bridges on the stability of slopes [2-8]. metals & mining reservoir geomechanics horizontal displacement displacement hydraulic fracturing equilibrium Reservoir Characterization Upstream Oil & Gas horizontal displacement history proceedings rock...

.... hydraulic fracturing horizontal displacement displacement specimen Upstream Oil & Gas crack propagation cross section Displacement Contour configuration average grain size propagation process zone Artificial Intelligence boundary process-zone length correlation fracture subset specimen...

... phenomena was revealed by contours of incremental horizontal displacement around peak stress. A concentration of deformation leading to fracture was identified, as was a region of relaxation behind the damage zone. 1. INTRODUCTION In highly stressed rock, axial splitting may develop in an area adjacent...

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... in the solution of complex problems and are also capable of simulating coupled processes. Reservoir Characterization Artificial Intelligence Upstream Oil & Gas tension crack Engineering displacement horizontal displacement stability analysis measurement Point bolt diameter rock slope...

... numerical models of fracture surfaces can be inferred from quite unusual geostatistical methods and then successfully used in mechanical modeling. geologic modeling geological modeling Reservoir Characterization Upstream Oil & Gas Sample II curvature displacement horizontal displacement...

... Company's approach to monitoring and predicting mine subsidence and summary results from undermining the Energy Spur railroad. Reservoir Characterization metals & mining panel 2 displacement horizontal displacement Longwall Mining engineer handbook prediction extraction differential...