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Keywords: specimen
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Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-257
... boley geotechnik gmbh reservoir characterization specimen reduction fracture table 2 figure 3 resin grout munich 15th ISRM Congress 2023 & 72nd Geomechanics Colloquium. Schubert & Kluckner (eds.) © ÖGG Research of safety-relevant natural and structural factors influencing the load-bearing...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-276
... china government rock-concrete interface shear strength geologist asia government geological subdiscipline simulation geology reservoir characterization strength interface reservoir geomechanics engineering numerical simulation civil engineering sandstone tongji university mpa specimen...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-327
... and their changing characteristics. It has been applied to fundamental research fields such as particle dynamics and failure of different media. fluid dynamics structural geology rock type geologist asia government hydraulic fracturing norway government reservoir characterization specimen sedimentary...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-264
... load converter (CTC), and was developed by Klanphumusri (2010). The equipment design allows the user to switch between tensile stress and compression applications on the same specimen during placement in the conventional compression machine. The apparatus was designed to test dog bone or halter rock...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-314
.... Numerical modelling provides a detailed insight into all the phases of rock fragmentation by disc cutters. geology cutter fragmentation optimum tbm upstream oil & gas reservoir geomechanics penetration specimen debris geologist completion installation and operations criteria...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-376
... asia government reservoir geomechanics loading structural geology specimen aluminum alloy sedimentary rock rock type reservoir characterization journal geologist india government geological subdiscipline strength mining science numerical validation international journal...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-392
... upstream oil & gas reservoir characterization specimen reservoir geomechanics strength geology geological subdiscipline mesodefect strength determination dataset leeb hardness test jakubec geologist metals & mining canada government rock mechanic composite specimen...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-409
..., it is difficult to directly obtain the shear strength parameters of rock joints through in-situ tests and laboratory tests. Commonly, the rock joint of rock mass is cut into rock joint specimens in the same size, and the shear strength of the rock joint is estimated by evaluating the shear strength of each rock...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-408
... proportion (VBP) on dynamic shear behavior. For this purpose, artificial model bimrock specimens with different VBP were constituted, due to challenges in extracting undisturbed natural specimens. According to the results, most of the model specimens show strain hardening behavior after the dynamic shear...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-435
... characterization porosity westerly granite reservoir geomechanics intrusion porosimetry upstream oil & gas porosimetry geological subdiscipline dependence mercury intrusion porosimetry amplitude sensor axis figure 1 pore specimen thermal degradation cylinder mercury porosimetry mip...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-369
... relies on testing smaller specimens, typically from boreholes. The current paper provides guidelines for evaluation and interpretation of rock strength and stiffness based on UCS, Point Load and Brazil tests as a function of size, height/diameter ratio of specimen and rock strength. Based on currently...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-410
... the axial load. However, the load-controlled and axial displacement-controlled methods can only capture the pre-peak and Class I-type (negative drop modulus/stable fracture propagation) post-peak behavior of rocks, respectively. This ensues while the rock specimens collapse violently after showing Class II...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-433
... ABSTRACT: Mode I fracture toughness test was performed on the Cotta sandstone on semi-circular bend specimen in a symmetric geometry. The twenty-two channels were used for acoustic emission (AE) monitoring during the loading up to the failure. This study presents a detail AE analysis focused...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-363
... Compressive tests were performed over both unaltered and CO 2 -altered specimens. Preliminary results show a variable affectation of the porosity, mainly in the carbon dioxide contact zone. Carbonated samples also seem to present modifications in their mechanical properties. INTRODUCTION Since 1979...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-390
... rates, the split Hopkinson pressure bar tests were conducted on cracked straight through Brazilian disc sandstone specimens. The results show that the crack propagation velocity, mode I and mode II stress intensity factors, dissipated energy increase with increasing loading rate. The effect of loading...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-372
.... The apparatus was mainly designed to obtain the complete stress–strain curves of hard rock specimens measuring 25 mm×25 mm×50 mm, while also considering the measurement of long-term deformation. This device focuses on solving technical problems such as inaccurate measurement of specimen deformation, low...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-437
... singh sirdesai influence ranjith literature mining engineering zhang specimen treatment granitic specimen 15th ISRM Congress 2023 & 72nd Geomechanics Colloquium. Schubert & Kluckner (eds.) © ÖGG Influence of grain-size on damage in thermally treated granitesA Review and Novel quantification...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-380
... saturated, porous, and pure chalk under low confining stress and the effect of changes in water saturation degree is presented, replicating the natural conditions of the Royer mine. CHALK PROPERTIES, SAMPLING AND SPECIMEN PREPARATION Test specimens were sampled at the Royer mine (Seine-et-Marne, France...
Proceedings Papers

Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-379
... ABSTRACT: Experimental study of rock specimens under uniaxial stress path has shown that ultimate failure in rocks occurs after the onset of crack coalescence associated with dilatancy. Typically, rock dilatancy is represented by estimation of averaged specimen-scale total volumetric strains...

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