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Keywords: stress state
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Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-007
... stress state application geomechanical data support pressure ground reaction © International Society for Rock Mechanics and Rock Engineering Norwegian Group for Rock Mechanics ISBN: 978-82-8208-072-9 C.C. Li, H. Ødegaard, A.H. Høien, J. Macias (Eds.) ISRM International Symposium Eurock 2020 Hard...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-048
... is manufactured for the physical simulation of mass transfer processes in cylindrical specimens with central hole under nonuniform stress state. From the back analysis of the test data, the empirical dependence of permeability on effective stress in artificial geomaterials is determined. 1 Introduction...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-044
... multiple mining methods in the same area, which can affect rock mass stability in and around this area. The stress state transformation forecast is necessary to determine the optimal direction and parameters of mining in terms of geomechanics. Numerical modeling is widely used for the stress state...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-123
... Abstract During the operation of gas storage caverns in rock salt mass the internal pressure changes during filling and withdrawal phases. Additionally temperature variations occur versus operation time. During withdrawal phases the temperature decreases which can lead to stress states...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-133
... coal bed Reservoir Characterization boundary inverse problem stress state procedia engineering 191 Artificial Intelligence information velocity field tomography stress-strain analysis coal-rock mass stress field Velocity distribution reconstruction tomography data Procedia Engineering...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-101
... accumulated for a number of years in a mine of Norilsk Nickel has displayed high sensitivity of the criterion towards the change in the stress state of rock mass areas under monitoring. 1. Introduction Currently the largest mines in Russia (in the regions of Norilsk, Tashtagol, Apatity, etc.) run multi...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-072
... deformation processes, which can be relatively precisely observed and measured. In order to verify the stress state of the rock mass and changes in it induced by longwall mining, monitoring of changes in the rock mass stress in connection with the mine out of the longwall No. 371 202 was carried out...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-136
... stress state Aydan settlement the valley degradation rate Cappadocia Region underground settlement tuff tensile strength Rock Mechanics and Rock Engineering: From the Past to the Future Ulusay et al. (Eds) © 2016 Taylor & Francis Group, London, ISBN 978-1-138-03265-1 A geoengineering...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-194
... any cracks and discontinuities. One of the research objectives of the Institute of Geonics, Czech Academy of Sciences, is the stress state of the rock mass and its influencing factors such as the stress strain relationship determination for the anisotropic rock and evaluation of the general error...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-071
... metals & mining strength failure criterion geometry Upstream Oil & Gas criteria rock mass reservoir geomechanics criterion extraction open stope pillar Reservoir Characterization stope crown pillar rock mass behavior excavation Hoek stress state georgieva crown pillar...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-122
... engineering assessment rock engineering assessment Upstream Oil & Gas stress state rock classification system Aydan salang tunnel support system Afghanistan north portal rock mass tunnel Rock Mechanics and Rock Engineering: From the Past to the Future Ulusay et al. (Eds) © 2016 Taylor...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-124
...). Aydan (2013) proposed a method to estimate the stress state from the damage zone around blasted holes. This method was applied to damage zone around blasted holes and some stress inferences made for the tunnel face. Estimations of in-situ stress estimations from different methods were compared. Finally...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-138
... and redistribution, reduction in the stiffness of rock masses, and other associated effects that can increase rock mass caveability to allow it to cave continuously in a controlled stable manner (Jeffrey et al. 2009). Upstream Oil & Gas displacement stress state normal displacement 1 Reservoir...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-125
... opening by using a hydro-mechanically coupled fluid flow model under isotropic and anisotropic compressive stress states. The main mechanism of hydraulically induced fracture is tensile failure. In contrast to mechanically driven fracture propagation, the models involving fluid injection exhibited...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-127
... permeability, migration of such fluids is almost impossible even under the high pressure-gradient condition. Fluid release from the crystal structure will take place if the stress state changes. In case of drilling or excavation, stress will be redistributed with the result of a deviatoric stress state...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-011
... a considerable role, when a tunnel collapses. This paper tries to identify the essence of rarely reported and often underestimated ground features, which can adversely impact budgets and timelines instantly with substantial effect. 1 Initial Stress State in the Ground The stress state in the ground is usually...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-131
... structures, large caverns are designed with often complex geometries and large spans. Moreover, as these caverns are generally located on the bottom of the hydraulic scheme, the high over burden is often responsible of a high stress state. Thanks to current background in France and around the world...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-182
... Abstract In situ stress is one of the main factors to be taken into account in the design of tunnels, as they can cause inadmissible stresses and strains leading to high deviations in the budgets. For that reason, the stress state is directly introduced into the numerical models used...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-213
... of wormhole formation on rock strength, which influences oil production. In order to understand the physical behavior of the interaction between formation of wormholes, fluid flow and stress states of the near well-bore zone, we will use computer simulation. In the following the numerical study for a test...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2014, May 27–29, 2014
Paper Number: ISRM-EUROCK-2014-024
... Abstract To investigate the deformation behavior and shear wave velocity change under extensional stress state, we conducted true triaxial compression test using Kimachi sandstone specimens of 35×35×70 mm. Shear wave velocities with different shear motion in the σ3 direction were observed...

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