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Keywords: sandstone
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Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-374
... Abstract Mechanism of slot-shaped borehole breakouts observed in experiments of drilling through high-porosity sandstone is investigated using DEM-continuum mechanics coupled modeling approach. The rock in DEM is modeled as an assembly of particles with flat joints at contacts. The failure...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-398
... capacity. The relation between ice content and temperature is assessed by the pore-size distribution curve to calculate the equivalent heat capacity. In order to assess the validity of the model established before, a simple heating test of sandstones was conducted to obtain the evolution of temperature...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-401
... mohr-coulomb criterion generalized hooke simulation application deformation modeling law reservoir geomechanics compaction relation calibration upstream oil & gas evolution porosity athy sandstone scenario sediment feasibility appraisal Rock Mechanics for Natural Resources...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-110
.... specimen toughness ligament plane notch drill pipe selection reservoir characterization diameter ouchterlony hydraulic fracturing fracture toughness displacement acoustic emission drillstring design pseudo-compact tension sandstone pct groove magnitude mode-i fracture toughness...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-111
... Abstract The paper presents the experimental study of the damage evolution under triaxial non-proportional loading of sandstones using the Triaxial Independent Loading Test System (TILTS) with in situ continuous registration of acoustic emission (AE) signals on the TILTS' loading plate...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-116
... obtained from DC resistivity test is questionable, which makes it impossible to accurately define the damage variable using resistivity. In this study, electrical impedance spectroscopy (EIS) measurements based on alternating current (AC) were applied to test sandstone specimens before and after cyclic...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-121
... Abstract Many literatures concerned with AE quiet period have been reported in last decades. However, the mechanism of the AE quiet period remains to be revealed. In this paper, the AE characteristics of the quiet period were investigated based on the AE experiments of red sandstones under...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-123
... sandstone equation propagation excavation relationship rock mechanic newborn pore engineering figure 4 temporal-spatial attenuation disturbance amplitude Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza (Eds) © 2020 ISRM, ISBN 978-0-367...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-130
...) and to reveal the interaction between the dip angles of bedding (foliation) and the mechanism of crack initiation and propagation. characteristic schistosity nephogram rock mechanic international journal plane mineral composition reservoir geomechanics correlation sandstone layered gneiss...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-131
... of tests performed on four different types of rock (Arcera, Pinacas and Corvio sandstones, and Blanco Mera granite), which served as a basis for comparison between both testing methods. In addition, specimens of 100, 50 and 38 mm in diameter were used in order to assess eventual size effects on K IC...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-141
... Abstract To study the effect of dynamic load on the energy dissipation mechanism of red sandstone soil under different dry densities, it is of great significance to improve construction quality and progress. The cyclic impact test of red sandstone soil under different dry densities was carried...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-274
... improved by adopting longwall technologies using stable gate pillar designs. Because of limitations in space, the interested reader is referred to previous publications about this first case study (Maleki 1981, 2015). coal mining reservoir geomechanics pillar seismicity sandstone structural...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-290
... triaxial compression deformation feng jinping marble strength marble mechanism reservoir characterization characteristic specimen zhang kong structural geology cjpl-ii marble rock mechanic fracture engineering international journal sandstone stability Rock Mechanics for Natural...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-181
... permeability journal flow in porous media biot mpa doctoral dissertation byerlee fluid dynamics westerly granite reference american rock mechanic association bernabe reservoir geomechanics sandstone deformation equation 2 envelope Rock Mechanics for Natural Resources and Infrastructure...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-182
... Abstract Using a novel true triaxial setup, sand production tests on hollow quasi-cylinder Castlegate sandstone specimens have been performed on irreducible water saturated specimens with oil flow under varying levels of axial and lateral stress anisotropy, obtaining sand onset and rate...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-022
... laboratories to study tunnelling and geotechnical problems in the Tibetan Plateau. metals & mining fh tunnel completion ground transportation permafrost kl tunnel underground excavation tunnel lining rail transportation tibetan plateau excavation maintenance tunnel sandstone portal...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-033
... borehole for the purpose. Analysis of obtained data is carried out and with the help of various empirical and mathematical approaches available in vogue towards rock mass classification and accordingly, support is estimated. It is found that coal measure rocks, particularly sandstone including clay bands...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-046
... in the Sydney Region indicates that a full range of block sizes is feasible, but in particular it extends the range of application for larger block scale rock masses that are typical of Sydney Sandstone and would be excluded with the use of RQD only or would be imprecisely defined if the Marinos and Hoek 2000...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-053
... electrode resistivity evaluation kovire tunnel arrangement conglomerate structural geology investigation characteristic federal university objective interpretation sandstone Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza (Eds) © 2020 ISRM...
Proceedings Papers

Paper presented at the 14th ISRM Congress, September 13–18, 2019
Paper Number: ISRM-14CONGRESS-2019-095
.... In addition to the stratigraphic and lithological changes, an ignored aspect was the presence of groundwater which cause a reduction in the Sandstone resistance, facilitating its weathering and disintegration, influencing also the RMR values of the rock mass. Up to date is still pending the excavation of 16...

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