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1-20 of 171
Keywords: Simulation
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Proceedings Papers
Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-067
... temperatures respectively of 50 and 90°C) and thermo-chemical treatment. Thermo-chemical treatments were performed by soaking the specimens in a 5x10 −6 mol/l solution of sulphuric acid at pH=5 to simulate the acid rain behavior, at constant target temperatures, for one week. In general, for each weathering...
Proceedings Papers
Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-093
... of numerical simulation, the width of the Ionakhsh Fault together with the crushing zone was taken as 20 m. For all rocks it was accepted: Young modulus – 3000 MPa; Poisson’s ratio - 0.3; density - 2.6 g/cm 3 . Horizontal compressive tectonic force was given as 12 MPa. The simulation showed that the dynamic...
Proceedings Papers
Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-096
... and Biotite minerals, is taken as linear elastic but heterogeneous and anisotropic. Temperature dependence of material properties is neglected. The simulation demonstrates that the secondary stresses arising from converse piezoelectric effect are three orders of magnitude smaller than the primary thermal...
Proceedings Papers
Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-095
... simulations to predict the unconfined compressive strength (UCS), Young’s modulus (E) and Poisson’s ratio ( v ) of a PFC3D model for a given set of 15 microparameter values. Unlike other ANN-based DEM calibration methods, the proposed method calibrates microparameters by optimizing the ANN inputs rather than...
Proceedings Papers
Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-186
... with the computational simulation of macroscopic infiltration-cracks within the scope of theoretical modelling of salt cavern behavior during gas storage, taking into account additional mechanical damage processes in the rock salt. On the basis of variational calculus, the infiltration fracture propagation...
Proceedings Papers
Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-106
... Abstract To realistically simulate fluid flow in fractured rock mass, a scheme to represent the discrete fracture networks (DFN) in the numerical model is of utmost importance. In this paper we discuss a workflow to implement a field-measurement based DFN into an FEM code (COMSOL Multiphysics...
Proceedings Papers
Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-104
...-porte gallery deformation rock engineering environmental science 833 installation simulation Mechanics and Rock Engineering, from Theory to Practice IOP Publishing IOP Conf. Series: Earth and Environmental Science 833 (2021) 012105 doi:10.1088/1755-1315/833/1/012105 Insights on squeezing...
Proceedings Papers
Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-115
... theory calcareous mudstone environmental science 833 degradation kpa rock engineering specimen stiffness geologist europe government geological subdiscipline subtype simulation plasticity Mechanics and Rock Engineering, from Theory to Practice IOP Publishing IOP Conf. Series: Earth...
Proceedings Papers
Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-103
... the force-displacement response of an anchored mesh panel to an out-of-plane load, extending the experimental standard punch test characteristic values (ISO 17745, ISO 17746, UNI 11437) to field conditions. Discrete element simulations are used to provide analytical relations that account for the effect...
Proceedings Papers
Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-176
... rock engineering environmental science 833 theory geological subdiscipline masonry probability strength ground transportation boulder practice iop publishing iop conf simulation evaluation trajectory resistance rockfall Mechanics and Rock Engineering, from Theory to Practice IOP...
Proceedings Papers
Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-105
... the triggering of the event. The latter is a depth-averaged numerical model that simulates the event runout, and whose parameters are calibrated through back-analysis. The applicability of the two combined approaches is tested through modelling of an historical event in Southern Italy, which was characterized...
Proceedings Papers
Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-102
... (i.e., tertiary creep, or the accelerating strains that occur prior to failure). In this work, the Distinct-Element Method (DEM) approach is employed, in conjunction with Rate Process Theory (RPT), to simulate the effect of rock creep in deep tunnels. To do that, the DEM models are constructed using...
Proceedings Papers
Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-004
... test rig relative deflection reinforcement structural geology disc force simulation vertical force deflection upstream oil & gas cutter force subsurface engineering deformation behaviour sensor documentation measurement system loading eurock 2020 tunnel boring machine ©...
Proceedings Papers
Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-059
... consisting of sprayed concrete and a waterproof sprayed membrane. Numerical distinct element modelling in 3DEC is used to simulate the groundwater pressure. The results are compared to existing groundwater pressure measurements performed behind the lining. The construction damage zone (CDZ) is included...
Proceedings Papers
Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-143
... hot storage heat exchanger prototype fluid modeling production logging Discharge diffusive hot storage geothermal exchanger geostock exchanger production monitoring Upstream Oil & Gas Simulation heat transfer procedia engineering 191 ground heat storage storage Energy Storage...
Proceedings Papers
Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-138
... Abstract Discontinuum and continuum modelling approaches were used to simulate the single- and multi-stage hydraulic fracturing. Twodimensional discontinuum modelling of single-stage fracturing revealed a marked modification of the stress field in the vicinity of the fracture (stress shadow...
Proceedings Papers
Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-151
... & mining Monte Carlo simulation operational safety Simulation geotechnical hazard analysis discrete fracture network mapping highwall mining operation trace length highwall hydraulic fracturing elmouttie dfn realisation shivakumar karekal procedia engineering 191 bedding marc elmouttie...
Proceedings Papers
Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-073
... methods in the evaluation of slope stability. To complex rock and soil slopes, numerical approaches such as finite element and finite difference methods may be more suitable due to their flexibility when applied to simulate in situ stresses, loading condition, and multi-field interactions. Even though...
Proceedings Papers
Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-069
... into this problem, we use the combined finite-discrete element method to examine how the mean of local stress tensors is related to the far-field stress. We have conducted a series of stress simulations on a model of a fractured rock mass subjected to various boundary loadings, and calculated the Euclidean mean...
Proceedings Papers
Minami Kataoka, Eqlima Mahdavi, Takahiro Funatsu, Takashi Takehara, Yuzo Obara, Katsunori Fukui, Kimihiro Hashiba
Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-113
... considering several confining pressure conditions was performed to calculate the stress intensity factor. Based on the numerical simulation results, the modification of the fracture toughness estimation was suggested. Applicability of the suggested estimation was discussed with comparing the mode I fracture...
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