... 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...

... geology mudrock reservoir geomechanics rock type panel mining mudstone horizontal displacement pittsburgh coal seam displacement interface well pad shale ga well deep cover longwall panel united states government casing design reservoir characterization gas well relative horizontal...

... that large horizontal displacements are more likely to occur under shallow cover with wet and inclined overburden strata, which may cause shear failure in gas well casings. This study demonstrates that gas well stability in longwall chain pillars can be effectively evaluated using FLAC3D modeling and field...

... operating pressure change curve artificial intelligence horizontal displacement well spacing natural gas storage thickness characteristic natural language displacement interlayer operation cavity salt rock vertical displacement beijing operating pressure constitutive model stability...

... casings, which were verified by in-mine observations. complex reservoir displacement Upstream Oil & Gas shale gas gas well claystone layer protection overburden depth deformation coal seam panel ii mining horizontal displacement shale gas well subsidence longwall panel Longwall...

... transportation horizontal displacement tunnel deformation excavation fracture vibration tunnel 1. INTRODUCTION The Tseung Kwan O Lam Tin Tunnel (TKO-LTT), Main Tunnel and Associated Works Section (Contract NE/2015/01), comprises a twin dual-lane 2.6 km-long road tunnel with the construction...

.... 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...

... transportation displacement underground structure horizontal displacement Upstream Oil & Gas earthquake loading Toyoura sand dynamic analysis Earthquake ground improvement Daikai station Reservoir Characterization central column optimum pattern box culvert countermeasure central wall case 1...

... 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. Upstream Oil & Gas scale effect joint surface discontinuity numerical evaluation horizontal displacement normal stress strength reduction...

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

... demonstrated the importance of rock bridges on the stability of slopes [2-8]. reservoir geomechanics hydraulic fracturing metals & mining Reservoir Characterization horizontal displacement displacement mechanism wedge discontinuity equilibrium rock slope basal surface horizontal...

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

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

... Characterization displacement relative displacement discontinuous deformation analysis relative velocity Artificial Intelligence horizontal displacement seismic acceleration method 1 constraint solution 0 analytical solution DDA method 2 Upstream Oil & Gas base block method 3 block 1 block 2...

... 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...

... simulation structural geology horizontal displacement Colorado School lcm test Upstream Oil & Gas physical property vertical displacement soft sand grout matrix boulder box 3 Reservoir Characterization displacement numerical simulation sand grout fracture principal stress bimrock disc...

... deformation discontinuity loading DDA horizontal displacement rock slope vertical displacement case 1 stability rock mass vertical tension crack ARMA/USRMS 05-771 Structural control on the stability of overhanging, discontinuous rock slopes Tsesarsky, M1. and Hatzor Y. H Department of Geological...

... numerical models of fracture surfaces can be inferred from quite unusual geostatistical methods and then successfully used in mechanical modeling. Upstream Oil & Gas geological modeling horizontal displacement rock fracture surface curvature experimental variogram residual value geologic...

... gradient Handbook Reservoir Characterization underground mining horizontal displacement extraction Maximum Subsidence prediction method deformation Rock Mechanics for Industrg Amadei, Kranz, Scott & Smeallie (eds) ¸ 1999 Balkema, Rotterdam, ISBN 90 5809 052 3 Subsidence experience atTwentymile...