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Keywords: correlation
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Proceedings Papers

Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-071
... density, water absorption, apparent porosity, uniaxial compressive and tensile strength tests were performed to obtain data set for correlation analysis. With water saturation under atmospheric pressure, the uniaxial compressive strength and tensile strength of all studied lithotypes were reduced...
Proceedings Papers

Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-022
... used to correlate static and dynamic moduli, providing coefficients of determination of 0.99 and 0.97, for slow and quick cooling, respectively. It is also remarkable that the Edyn/Est rate was smaller than 1 for elastic moduli over 30 GPa (i.e., 105, 200 and 400 °C) and greater than 1 for lower moduli...
Proceedings Papers

Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-053
... anisotropy and the flow turbulence, which determines the influence of abrasion and punching of the blocks. The rebound shows a direct correlation with the bulk density and an inverse correlation with the distance to the source area. Introduction Objective How does the alteration of a rock evolve over...
Proceedings Papers

Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-161
... conditions are not common: there are only a few attempts to correlate machine data with geotechnical conditions during excavation and in most cases the use of machine data is related to assessment of TBM performance for prediction of advance rate. The analysis of TBM parameters may represent an interesting...
Proceedings Papers

Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-135
..., drilling machine specification and rock mass properties. Nonlinear regression model was used to derive the drill rate model. The result indicates high correlation between the estimated and the actual drill rates. In addition, it was found that the uniaxial compressive strength of the rock, the angle...
Proceedings Papers

Paper presented at the ISRM International Symposium – EUROCK 2021, September 21–24, 2021
Paper Number: ISRM-EUROCK-2021-160
... that correlate better with the encountered rockmass conditions than several other common parameters. Introduction The Brenner Base Tunnel (BBT) is a railway tunnel that is currently under construction and connects the cities of Innsbruck (Austria) and Fortezza (Italy). With 120 km of main tubes – railway...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2020, June 14–19, 2020
Paper Number: ISRM-EUROCK-2020-030
... of the reconstruction works. Due to the strongly varying geology, however, it was not possible to establish a systematic correlation between the swelling pressures determined in the laboratory and the swelling pressures measured on- site. Thus, the laboratory tests had to be analysed in more detail. 2.2 Laboratory...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-036
... porosity, density and penetration rate. For prediction of UCS, artificial neural networks were developed between UCS and input data resulting a practical correlation. In this research, a long well segment possessing complete and continuous data coverage has been analysed, and collected data of the wellbore...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-011
... conditions, and thus the potential for dynamic loads. Reservoir Characterization Upstream Oil & Gas metals & mining strength standardized regression coefficient coefficient machine learning structural geology correlation pillar factor safety Maleki mechanics Artificial...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-039
... or similar classification systems in providing an accurate estimation of TBM penetration rate has had limited success due to the nature of the weights assigned to the input parameters. The results of many investigations on this topic have shown a weak correlation between TBM penetration rate and RMR...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-076
... elasticity machine learning fuzzy logic input parameter procedia engineering 191 dry density correlation uniaxial compressive strength genetic algorithm expression programming Gene Expression Programming equation gep method Reservoir Characterization Upstream Oil & Gas behnia algorithm...
Proceedings Papers

Paper presented at the ISRM European Rock Mechanics Symposium - EUROCK 2017, June 20–22, 2017
Paper Number: ISRM-EUROCK-2017-058
... aggregates. Present study shows the correlation between these important parameters of the rock and tries to propose an empirical equation so that one property can be determine from the others by applying this empirical equation. To estimate the good correlation between the properties of rocks, different...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-145
... to excavate the tunnel was recorded. The rock quality designation (RQD), uniaxial compressive strength (UCS), Brazilian tensile strength (BTS), density Schmidt hammer hardness (SHH), Shore Scleroscope hardness (SSH), and Cerchar abrasivity index (CAI) were realized for each zone. Next, the correlations...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-157
... of RMR system for use inTBM tunneling projects. Sapigni et al. (2002) correlated TBM performance parameters containing penetration rate (PR) and FPI to RMR classifica- tion system. Innaurato et al. (1991) developed a new model for estimation of penetration rate based on intact rock (expressed by uniaxial...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-169
... yet. Our aim is to analyze different methods of GSI determination on the basis of observations during the construction phase of the Bátaapáti radioactive waste repository. Examinations of the values determined on-site gave significantly different results. Different correlations were determined between...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-199
... frequencies of the investigated volume. Ground motion at these frequencies was found to be controlled by the main fractures observed at the site and numerical modelling is currently under development for geomechanical and modal analysis of the site. Both spectral analysis and cross-correlation of seismic...
Proceedings Papers

Paper presented at the ISRM International Symposium - EUROCK 2016, August 29–31, 2016
Paper Number: ISRM-EUROCK-2016-196
... Upstream Oil & Gas cutter penetration depth Reservoir Characterization scratch test correlation Detournay strength RSBP rock strength borehole wall Probe University application prototype rock strength borehole probe reservoir geomechanics metamorphic rock borehole State...

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