... researches, this paper utilized the SHPB loading system and the DIC technique [25], and quantitatively obtained the influence of the flaw orientation and loading rate on the rock failure mode and mechanical properties. 2. Experimental design and apparatus 2.1. Test scheme and specimen preparation The test...

.... The failure modes and mechanical parameter sensitivity characteristics of shale under different loading rates were investigated. The relationship between compressive strength and loading rate was generally linear under different conditions of weak plane angles (β), meanwhile, elastic modulus manifested...

... Technology in Urban Rail Transit, Beijing, China c China Road and Bridge Corporation, Beijing, China * junyang@tsinghua.edu.cn Abstract Aiming at fully considering the influence of bolt length on stability of flysch layered slope, safety factors and failure modes of layered slope with different dip angles...

... with the actual experimental strength and predicted strength, we discussed the failure mode governing the strength characteristic of the sample. In the case of lower uniaxial compressive strength than that of simple stress analysis, shear cracking so-called the secondary crack and crack coalescence were observed...

...°; however, the trends of dilation angle varied with shear rate are different with asperities 15° and 30° as a result of varieties of failure modes. The increasing tendency of the slope of shear strength envelopes is related to the raising of shear rate. In order to distinguish the influences of normal...

... Abstract This paper investigates failure modes of consequent rock slopes under complicated working conditions by discrete element method depending on three parameters--- structural plane dip angle θ , rock formation thickness d , and slope angle a. Different range of dip angle θ and slope...

... similar tendencies toward measured displacements and stresses during undercutting. Moreover, the buckling failure mode of both slope models is discovered excitedly. The results provide further understandings of the undercut slope behaviors. The better understandings help engineers to design and monitor...

... strength failure mode specimen joint orientation Upstream Oil & Gas rock bolt deformation behaviour Grasselli Reservoir Characterization unreinforced specimen jointed rock anisotropy ratio enhancement proceedings jointed rock specimen metals & mining variation egger...

... Reservoir Characterization compression strength slate experiment wellbore integrity Soil mechanics Upstream Oil & Gas strength layer surface mechanical property anisotropic property failure mode Wellbore Design absorption water-weakening mechanism Engineering discontinuity...

... of artificial neural networks is not an easy task and requires sophisticated modeling techniques, experience, deep knowledge of engineering and a vast amount of experimental data. Upstream Oil & Gas failure mode ANN model machine learning strength artificial neural network determination Rock...