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Keywords: calculation
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Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-005
... basis, e.g. borehole, mine, and geophysical data. For the geomechanical analysis of underground structures the JIFE finite-element tool has being developed to analyze large 3-D structures and to consider coupled THMC processes. The results of finite-element calculations, i.e. stresses, strains...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-030
.... In this way, the computational burden for one calculation was reduced to a reasonably low level, without losing accuracy of the model. Loads of the model include fluid injection and gravity, which balances the initial geostress field. Various values of injection rate were used in these calculations...
Proceedings Papers

Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-149
..., independent of the lithology being tested. Secondly, using the shear strength database of Douglas (2002), we examine the influence of confining pressure range and the inclusion or exclusion of DTS and BTS test values on calculated values of m i . Chief amongst the influences was the exclusion of tensile...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-326
.... The numerical calculation procedure thus switches hence and forth between mechanical calculation (initial equilibrium after round excavation) and viscous calculation, modelling the creep and shrinkage processes in the young shotcrete. The comparison is conducted with regard to displacement development...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-252
... & Gas dimension experiment geometry conditioning Fluid Dynamics Simulation bentonite core hydration stage calculation diameter quantify flow in porous media performance test composition clay core saturation flux repository seal void instrumentation situ experiment core composition...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-322
... construction management by field measurement is performed in large scale underground railway station (Sirkeci station) by means of NATM. Reservoir Characterization countermeasure calculation excavation ground transportation back analysis pore water pressure rail transportation recharge well...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-358
... ABSTRACT In Eurocode 7 (EC7), some guidelines are provided for the design of spread foundations built on rock masses. Moreover, a method for the calculation of the bearing capacity for this type of foundations is suggested. However, it does not take into account important factors that...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-351
... landslides will occur in the same geological, geomorphologic conditions as in the past. Based on the back calculation of mechanical parameters of a past landslide site along a highway in the research area, this paper evaluates landslide stability and recurrence probability in this area to prevent similar...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-370
... environment to examine wellbore and perforation device stability under the complex configurations and to validate the initial calculations, and conducting an experimental approach using laboratory-rock mechanical testing techniques to calibrate the sanding prediction under simulated downhole conditions...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-063
... fundamental part of the investigations is the geotechnical safety analysis to evaluate the long-term integrity of the salt barrier from a rock-mechanical point of view. To this end, several numerical calculations using different finite-element codes as well as two- and three-dimensional models have been...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-078
...-dimensional modelling. Upstream Oil & Gas temporary support Bedrock Investigation mechanical calculation reservoir geomechanics displacement horizontal stress excavation numerical rock mechanics tunnel approximate method calculation Finland Reservoir Characterization stress field...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-040
... 2 geotechnical software. knowledge management San Genaro ramp study area stability Upstream Oil & Gas Thickness stereographic projection calculation discontinuity Reservoir Characterization strength shear zone andesite MPa software plug design plug rock mass construction...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-056
... ABSTRACT Finite-element calculations have been made to analyse the stability of large old mining rooms and the integrity of the salt barrier in the Bartensleben salt mine. In the context of the repository's closure concept several large old mining rooms were selected to be backfilled in...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-051
... groups for back-analysis calculation to minimize necessary combinations. The calculated plastic convergence values were compared with in situ monitoring data. After calculation, the convergence value of a particular group fit well with the in situ monitoring deformation. The parameters of this particular...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-267
... ABSTRACT This paper presents current developments in theoretical calculations of stress distribution within the resin encapsulating roof bolts in underground mines. Monitoring of steel bolt performance indicate that amongst many parameters bolt profile plays an important role in load transfer...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-238
... ABSTRACT The pre-calculation is required for planning and optimization of multiple fracture systems to enhance oil and gas recovery from tight reservoirs. However the fractures in a multiple-fracture system are often individually treated in the conventional semi-analytical simulators, such...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-255
... canister surface is set to be less than 100°C (90°C if an offset of 10°C is considered), the dimension of a repository can be optimized by a 3D modeling. While in case of 2D thermal calculation the maximal temperature in the repository is 87°C, the maximal temperature from 3D THM modeling is only 75°C. The...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-261
... carried out. The kinetic energy and local magnitude during the calculation was continuously registered. It was found that the kinetic energy has a good relationship with the injection rate and the stimulated volume in the rock depends strongly on the injection volume. geothermal reservoir Upstream...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-277
... combined support in roadways combines roof bolting and standing (conventional) supports. The calculation of a load bearing capacity of roadway supports contains period of drivage and period of mining in the vicinity of roadways. The load bearing capacity of supports during drivage is based on the size of...
Proceedings Papers

Paper presented at the 12th ISRM Congress, October 16–21, 2011
Paper Number: ISRM-12CONGRESS-2011-139
... use of R as a means of estimating m i is considered to be a preferable alternative to reliance on guideline charts. Reservoir Characterization Upstream Oil & Gas correlation machine learning structural geology calculation reservoir geomechanics hoek-brown failure criterion...

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