... wetting deterioration. To examine the failure patterns, the failure planes of all specimens occurred on the foliation planes, indicating reasonable failure patterns. 1. Introduction Foliation is a geological structure formed by shearing forces or differential pressure during regional metamorphism...

... description method for the rock face was proposed. This method is based on the circular structural profile line observed in the borehole and digital borehole camera technology application in three-dimensional topographical feature of the rock structure plane. This paper is based on the borehole wall plane...

... learning Reservoir Characterization Upstream Oil & Gas delineation seismic event seismic response isrm international symposium asian rock mechanics symposium 29 Artificial Intelligence structural campaign Woodward seismic cluster source mechanism seismicity development blast plane...

... Abstract The loading rate has a significant effect on the mechanical properties of shale and its influence degree is related to the angle of weak plane. Tri-axial compression tests were performed on shale samples from Longmaxi reservoir formation with GCTS RTR1500 mechanical testing system...

... Upstream Oil & Gas criterion isrm international symposium asian rock mechanics symposium 29 friction angle orientation failure condition cohesion failure plane Reservoir Characterization strength variation critical plane approach distribution function stress condition...

... strength criterion is proposed for anisotropic rocks and jointed rock mass. The proposed criterion is an extension of Jaeger two-dimensional (2D) anisotropic criterion into three-dimension (3D) using Mogi-Coulomb strength criterion. It is concluded from the study that the most critical anisotropic plane...

... knowledge management structural geology plane slip surface rock mass shear strength Upstream Oil & Gas bedding cross-section limit equilibrium analysis Reservoir Characterization strength asian rock mechanics symposium 29 rock mass anisotropy metals & mining isrm...

... to cause shear failure depends not only on the other two principal stresses, but also on the angle between the maximum principal stress and the normal to the bedding plane. According to Jaeger s plane of weakness model, for near 0° or 90°, failure will occur at a stress determined by the failure...

... the coefficient of friction for the rock. Fairhurst asian rock mechanics symposium arms8 Detournay Sapporo Upstream Oil & Gas reservoir geomechanics scratch test strength specimen compressive strength Wawersik plane october 2014 compression Reservoir Characterization specific energy...

... as respective scalar functions of orientation vector. These two distribution functions employ the 2nd order symmetric traceless tensor which describes the directional bias of the strength parameter from the orientation average. Critical Plane Approach is applied to find the 3-D stress conditions at failure...

.... The dynamic fracture toughness K ic was determined by using loading pressure-time curves measured on the transmitted bar and the failure time of the specimen calculated by non-contact laser gap gauge system. fracture toughness rift plane shpb system SR sample hydraulic fracturing rapid...

... little discernible effect over for the limited range of friction surfaces investigated. reservoir geomechanics strength variation plane Upstream Oil & Gas composite specimen in-fill material specimen reduction hydraulic fracturing test specimen fracture plane discontinuity loading...

... specimens and G 2 can be obtained from the five specimens of inclined angles. Two values of tangential modulus on the anisotropic plane, averaged G 2 and G 2-sv , are almost same each other within 6 % of difference. And test data of the apparent Young's modulus can be referred as a monotonous increasing...

..., ) = (±12.2°, ±5.6°, ±0.3). Furthermore Shear stress ratio? t f / t f f is decreased especially in the case a f < 0. classification variation test result strength property Upstream Oil & Gas accuracy shear plane rock mass Reservoir Characterization slip plane plane MPa concrete...

... Upstream Oil & Gas Rock mechanics discontinuity Artificial Intelligence stability analysis intersection Reservoir Characterization Engineering discontinuous zone key block University Block Theory rock block deformation reservoir geomechanics structural plane plane...

... support design , FLAC3D 1. INTRODUCTION Bedding rock mass is typical type of rock mass encountered in rock mechanics and tunneling. Its physical and mechanical properties are almost the same as those of a bedding plane, its direction is perpendicular to the bedding plane but otherwise varies greatly...

... by the intersection of two separate planes, for example, two-joints set. The slope surface and two planes create a wedge that will tend to slide outwards even under the pure gravity due to the lack of frictional resistance. In this case, Stability analysis is important for both in terms of cost estimation before...

...) the mechanism of the slope deformation, whether it is sliding or toppling, (2) the location of sliding planes, and (3) the strength parameters, such as cohesion and the internal friction angle, from the measured displacements, even only from the surface displacements. The back analysis procedure...

... acceleration is exceeded, by double- integration of the acceleration time-history, with the yield acceleration used as reference datum. Goodman and Seed [5] showed that for the case of a block on an inclined plane the yield acceleration is given by: ay = tan (Ø a)g (1) For an acceleration record of the form...

... reservoir geomechanics Engineering normal stress original theory Reservoir Characterization Upstream Oil & Gas national technical university plane rock mass wellbore integrity strength failure criterion specimen weakness theory sparsely jointed rock mass Wellbore Design...