Geostatistical simulation to map the spatial heterogeneity of geomechanical parameters: A case study with rock mass rating
Author
dc.contributor.author
Pinheiro, Marisa
Author
dc.contributor.author
Vallejos Massa, Javier
Author
dc.contributor.author
Miranda, Tiago
Author
dc.contributor.author
Emery, Xavier
Admission date
dc.date.accessioned
2016-09-26T15:30:40Z
Available date
dc.date.available
2016-09-26T15:30:40Z
Publication date
dc.date.issued
2016
Cita de ítem
dc.identifier.citation
Engineering Geology 205 (2016) 93–103
es_ES
Identifier
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10.1016/j.enggeo.2016.03.003
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/140509
Abstract
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A better characterization of complex rock masses is essential in geotechnical engineering, as the empirical systems widely used for this purpose have significant limitations and do not provide adequate answers for risk analysis. Geostatistics offers a set of tools that allow not only predicting the rock mass properties, but also mapping their heterogeneity at different spatial scales and quantifying the uncertainty in their actual values. In this paper, two geostatistical approaches are compared for modeling the Rock Mass Rating (RMR), which is used to geomechanically characterize the rock mass in geotechnical works. The first approach consists of the direct simulation of the RMR values, based on a Gaussian spatial random field model. In contrast, the second approach uses the truncated Gaussian model to separately simulate the individual parameters of the RMR, which subsequently are summed to obtain the final RMR value. The computation time, practical implementation, level of details and post-processing outputs that can be obtained from both approaches are analyzed. Besides the RMR mapping and associated uncertainty, the deformation modulus is subsequently obtained based on these maps together with empirical expressions.
es_ES
Patrocinador
dc.description.sponsorship
Portuguese Foundation for Science and Technology (FCT), through ISISE project
UID/ECI/04029/2013
Chilean Economic Development Agency (CORFO), through Project Innova Chile-CORFO
11IDL2-10630
Chilean Commission for Scientific and Technological Research (CONICYT), through Project CONICYT/FONDECYT/REGULAR
1130085
Chilean Commission for Scientific and Technological Research (CONICYT), through Project CONICYT PIA Anillo ACT
1407