... to evaluate the drilling effects on rock mechanical behavior and its deformational response when testing these equations. The numerical results were then compared to the real wellbore data and provided variable numerical results according to the empirical correlation applied to the model. In general...

... the correlation between the measured data. Stability analyses were carried out assuming a rupture mechanism inferred from the geological-geotechnical characteristics of the slope. Figure 2a shows the topography of the rock slope and location of the WLs and Figure 2b shows the cross section under study...

... porosity lithology relation investigation geomechanical investigation young modulus aquifer limestone geothermal aquifer well logging reservoir characterization molasse basin dolostone dependency bavarian molasse basin potten correlation equation deviation Rock Mechanics for Natural...

... Abstract The deformation of Guopu slope, a reservoir bank slope of Laxiwa Hydropower Project, is very large and has a good correlation with the process of reservoir water storage. The stability analysis is important to the safety of Hydropower station. Using nonlinear numerical algorithm...

... learning compressive strength dilation displacement rock mechanic indraratna architecture prediction neural network shear strength danta neto iteration coefficient stiffness ann ballivy thickness discontinuity correlation Rock Mechanics for Natural Resources and Infrastructure...

...°,the maximum vertical displacement was largest and the position was in the center point of backfill, namely 0.5B which B was the width of stope. The value and position of maximum vertical displacement were linear correlation with inclined angle according to numerical simulation results, it can be determined...

... in Birchtree mine are used. The input parameters consist of the rock mass parameters and the excavation characteristics. The RMDi values are compared to the excavation overbreak and underbreak. The results suggest good correlation. It is concluded that the RMDi system could be used as a design tool to assess...

... , correlation of K , Re , Eu and Fr usually showed an obvious array distribution. 1 General Instructions Seepage characteristics of fractured rocks is a basic scientific problem in energy development fields such as efficient exploitation of oil and gas, safe disposal of nuclear waste and safe...

... MPa*m 1/2 at a confining pressure of 62 MPa. Winter (1983) conducted Chevron Bend tests of Ruhr sandstone inside a pressure vessel, and found that a positive correlation between fracture toughness and confining pressure exists. Müller (1986) found similar phenomenon through three point bending test...

... Abstract In order to study the effect of prefabricated elliptical holes on rock failure characteristics, static and dynamic compressive tests were conducted on rocks with elliptical holes of different geometries combined with digital image correlation (DIC), considering axial ratios...

... uniaxial compression based on digital speckle correlation method. The evolution nephograms of lateral strain field on the surface of samples have been obtained by the DSCM. The test results show that the progressive failure process of gneiss shows strong correlation with its internal schistose texture, i.e...

... LUT attributes. In this study, the 2D-Digital Image Correlation (2D-DIC) has been used to study the real-time evolution of damage based on full-field strain maps of prismatic brittle rock specimens (Lyons sandstone) subjected to uniaxial loads; concurrently the damage in the localized area illuminated...

...) of mineral infill can significantly reduce peak shear strength. More interestingly, at this thickness the coating can cause either a decrease or increase in residual shear strength. A positive correlation was established between the hardness and the residual friction angle of the minerals. Increasing...

..., the greater the probability of having weakness points, the increase in the occurrence of microfractures in the minerals and consequently decrease of the mechanical resistance. Considering the point load test, all deposits showed correlations above 0.7, indicating the presence of a suitable mineral skeleton...

... fragmentation model. However, these tests are costly and timing consuming. The correlation presented on this paper between the Modulus of Elasticity and the Specific Mass allows to obtain the Adjusted Elasticity Modulus, which has shown results close to the means Modules measured. A correlation factor...

... porosity and P wave velocity. A cluster statistical analysis was then adopted to classify the investigated samples into two groups where group 1 has high porosity values whereas group 2 is characterized by low porosity values. Beyond the fact that the high negative correlation between the wave velocity...

..., dry and water saturated porous rocks are relatively low, but when the rocks are frozen very high uniaxial strength values are measured. wellbore integrity uniaxial compressive strength upstream oil & gas reservoir characterization correlation tensile strength university porous...

... classification reservoir geomechanics compressive strength criterion isrm upstream oil & gas strength quartz-biotite schist discontinuity 1 reservoir characterization rebound coefficient correlation bieniawski mapping variation hoek-brown frequency histogram compression strength Rock...

... (Hadjigeorgiou 2012). well logging drilling log analysis logger software portable x-ray fluorescent analyzer upstream oil & gas rock quality designation metals & mining quantity scanner hardness discontinuity core analysis orientation correlation esmaieli roughness hadjigeorgiou...

... et al. 2012). They are characterized by being facies defined from a series of mechanical properties correlated to geological aspects (i.e., lithology, diagenesis, depositional environment, among others). Several studies have been conducted over the last few years, such as Saggaf et al. (2003...