1-20 of 112
Keywords: calculation
Close
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-059
... the model, and its hydraulic properties are back-calculated using the measurements. Assuming that there are no changes in the joint hydraulic apertures due to the tunnel excavation, the maximum groundwater pressure immediately behind the SCL is simulated to be approximately 470 kPa. This is lower than...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-035
... the analysis of a digital surface model. This paper proposes a method to identify discontinuity sets in a point cloud and calculate the spacing of the sets. The discontinuity sets are semi-automatically identified with the open-source software DSE (Discontinuity Set Extractor). The program analyzes...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-040
... supports. Due to the right-angled profile of the working and the applied technology of driving using road headers, separate roof bolting in combination with welded meshes is used to ensure the stability. The applied methods of dimensioning separate roof bolting as well as the methods of calculating the...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-007
... geotechnical analyses within the project conducted by Poltegor-Institute. The calculation procedure enabled determination of slope stability on the design of excavation and spoil dump. It included 21 analyses using Flac v.7 of which 14 regarded the slopes of the pit, 6 the slopes of the external spoil dump and...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-100
... mass and the mechanical properties of rocks along the well trajectory are used for this purpose. The article presents numerical simulations of changes of the rock mass state around a directional well. The calculations were conducted with various material models of rock: the linear-elastic model, the...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-075
... Upstream Oil & Gas Coal Basin input data Calculation Parameter thermal model metals & mining thermal field expert system rock mass Czech part calculation carboniferous rock mass vlastimil kajzar procedia engineering 191 temperature value temperature field software Procedia...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-114
... some level of PPV, an important increase in the calculated load on the arch steel support were observed in the stress concentration zones. These results are in good correlation with numerous cases of rockbursts occurred in the Polish mines. In our opinion, continuous measurement and controlling the...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-001
... realistic output for their designs on the jointed rock mass which largely behaves as a discontinuum. Therefore, as excavations in jointed rock masses and the use of DEM become more widespread, methods for interpretation and auditing become more urgent. Artificial Intelligence calculation jointed...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-077
... the proceeding of calculation, lumped parameter model or called a MDOF (multi-degree-of-freedom) model is developed. In this type of model, the drillstring is regarded as a linear system with series of rigid masses connected by massless elastic springs. The Newtonian approach and the energy...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-123
.... reservoir geomechanics drilling operation Reservoir Characterization Upstream Oil & Gas ground type fault rock calculation inner lining Austria Directional Drilling Berlin geotechnical design parameter grautschenhof discontinuity lining interpretation tunnel geotechnical design Design...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-104
... Kungkilang Block, South Sumatera. The distribution function determination of the parameters calculated and estimated in @Risk7 using Monte Carlo method for the sampling process and Kolmogorov-Smirnov for the fitting process. Ultimately, from @Risk7 calculation resulted that all parameters have a normal...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-176
... machine learning Artificial Intelligence Reservoir Characterization persistence metals & mining reservoir geomechanics calculation information geomechanical parameter discontinuity rock mass acquisition orientation smr index smrtool fieldwork plane riquelme software...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-147
... to the stress state in the vicinity of gas storage in salt caverns under consideration of thermo-mechanical coupled calculations will be presented. Numerical models are created to take into account the essential influence of the volume and depth of the cavern. Furthermore time-dependent, thermo...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-173
... Kashan, Kashan, Iran A. Esmaeilzadeh Department of Mining and Metallurgical Engineering, Urmia University of Technology, Urmia, Iran ABSTRACT: The fractures geometrical characteristics can be calculated by various sampling methods in 1 dimension (1D) & 2 dimensions (2D). The Discrete Fracture Network...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-169
... the calculated GSI values. 1 INTRODUCTION The Geological Strength Index (GSI ) represents today the most widely used engineering index for the cat- egorization of rock mass quality for obtaining input data into the continuum numerical analysis codes and closed form solutions based on the Hoek Brown...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-195
.... The survey monitoring data was processed by the author and the results are presented in this paper in form graphical presentations derived from tables of calculations. The graphs of subsidence profile, tilt profile and major and minor principal strains profiles are also provided. The interpretations...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-188
... rock mass. There is no well-known method to calculate tunnel stability of tunnel face during penetration of a fractured zone. The relevance of the hand calculation was verified with the 3D finite difference model, where the exact tunnel geometry, face support and fracture zone is directly considered...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-169
... Abstract Stress is an important parameter in rock mechanics. As it is represented by a second-order tensor, the usual statistical methods for scalars and vectors strictly are not applicable. As a result, the correct method for calculation of a mean stress tensor is still not clear. Here, and...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-120
... finite difference time domain (FDTD) calculation. In a subsequent thermo-mechanical finite element (FE) simulation the stresses generated by 15 s heating with 25 kW are obtained. High stresses on the boundaries of the microwave absorbing phase exceeding the tensile strength are observed. Finally, the...
Proceedings Papers

Paper presented at the ISRM Regional Symposium - EUROCK 2015, October 7–10, 2015
Paper Number: ISRM-EUROCK-2015-140
... every drill hole. Nonetheless, information provided by some of the drillings about depth and geometry of this zone let the thickness of tuffite reasonably assume in the range of 20 - 50 m. strength powerhouse construction pit tuffite Reservoir Characterization calculation fine tuffite rock...

Product(s) added to cart

Close Modal