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Keywords: roughness
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Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-198
... objective observations of the 3D roughness and joint aperture from drill cores to predict the peak shear strength of large natural, unfilled rock joints. Eight rock joint samples obtained after core-drilling an existing rock joint adjacent to the foundation of Storfinnforsen dam in Sweden were used...
Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-150
... spatial correlation lateral confinement intersection geometry figure 2 fracture intersection roughness orthogonal fracture complex reservoir geological subdiscipline topology pyrak-nolte visualization journal 15th ISRM Congress 2023 & 72nd Geomechanics Colloquium. Schubert & Kluckner (eds...
Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-158-D
... (in the laboratory) for small-scale roughness analysis, to a large-scale application (in the field) for the characterization of long slopes using drones. For each application, different methodologies have been proposed, adapting the SfM technique and developing innovative solutions. The obtained results confirm...
Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-027
... that the dynamic joint shear strength depended on the initial normal stress and joint roughness. INTRODUCTION Underground rock structures under high-stress conditions are exposed to potential fault-slip, rock ejection, and rock fall hazards caused by the discontinuities. For that reason, the underground...
Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-477
..., but application to large in situ discontinuities is yet to be undertaken. Paramount to the in-situ application of StADSS is the adequate collection of discontinuity roughness information. This paper presents an approach to digitize the seed trace of in-situ discontinuities. Several identical images of a seed...
Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-131
... ABSTRACT: Roughness of rock joint surface plays a key role in the stability conditions of rock slopes and it is commonly assessed on small portions of the outcropping surface or laboratory samples. However, roughness is naturally dependent on the considered scale, the analyzed surface sector...
Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-176
... at 36°, 42° and 47° angles of inclination, with frictionless (mica) and rough (P120 sandpaper) surfaces. The results showed that: (i) runout and deposit length on a smooth bed were greater than those on a rough surface, (ii) the height and width of deposit were greater on rough surfaces, and (iii...
Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-101
... were both digitally and manually characterized. Manual logging was carried out by visually assessing joint surface roughness and alteration indices. Sensor-based logging includes creating 2D and 3D joint roughness profiles using a handheld 3D scanner and measuring joint wall hardness and alteration...
Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-300
... ABSTRACT: Fluid flow through a rough fracture can be affected by several geometrical parameters such as aperture, roughness, and contact area. Of these, eddy flow can occur around contact areas and change streamline patterns. Fluid flow behavior through a 10 cm × 10 cm square fracture...
Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-409
... joint specimen (Yong et al. 2019; Kulatilake et al. 2021; Wang et al. 2022). According to the direct shear test method suggested by ISRM (Muralha et al. 2013), the shear region of the rock joint specimen should be guaranteed to be parallel to the shear plane. For rough and undulating rock joints...
Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-370
... correlation (DIC) system. The laboratory tensile strength and failure process are consistent with numerical simulation. Then, the tensile behavior of the interface with different roughness was simulated using MatDEM software. Results show that the tensile strength of rock-concrete disc is insensitive...
Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-389
... ABSTRACT: Anisotropic flow behavior in rock fractures is playing an important role in resource exploitation and engineering. To better understand the relation between flow behavior and geometrical features of fractures, digital fractures with 3 roughness were generated based on the spectral...
Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-374
... ABSTRACT: This study investigates the suitability of an adapted portable shearing box to measure the shear-induced dilation of a discontinuity and how the basic friction angle can be reliably derived from the shear data with dilation. Results show that samples with significant roughness...
Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-356
... the tension or shear force indirectly or modifying the conventional cylindrical or cube rock specimen. sedimentary rock geology rock type geologist mudstone roughness asia government china government reservoir characterization anisotropy upstream oil & gas complex reservoir shale gas...
Proceedings Papers
Paper presented at the 15th ISRM Congress, October 9–14, 2023
Paper Number: ISRM-15CONGRESS-2023-398
... ABSTRACT: This study introduces a new hydromechanical model to estimate both shear and nonlinear flow behaviours of a single rock fracture, taking into account the effects of fracture surface morphology on the fracture flow behaviours. The model incorporates a multi-scale roughness shear...
Proceedings Papers
Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-115
... conductivity dilation aperture dilation hydro-shearing stimulation granite shear displacement coupling thmc roughness Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza (Eds) © 2020 ISRM, ISBN 978-0-367-42284-4 Coupling THMC of fracture conductivity...
Proceedings Papers
Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-158
... (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...
Proceedings Papers
Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-197
... mechanical behavior, and physical modelling is a technique used to understand this behavior at a reduced scale. The use of 3D-printing technology in physical modelling allows a strict control of the joint's geometry (roughness, number of rock bridges, etc.). In this study the 3D-printing technology used...
Proceedings Papers
Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-230
... and Ulyashinskii 1992; Pedro, Mascarenhas, and Silva 1995; Carde and Françis 1999; Romanov, GabrovŠek, and Dreybrodt 2003). reservoir characterization cement grout cohesion deterioration variation evolution kpa international journal upstream oil & gas dissolution jrc variation roughness...
Proceedings Papers
Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-232
... by Fourier series that could be used to "improve" the force-capacity, or load-bearing capacity of the material or rock by changing granularity and roughness of the minerals. 1 Introduction Rock strength is the major mechanical property which can be estimated or measured by different tests among them one...
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