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A new method of estimating the ratio between in situ rock stresses and tectonics based on empirical and probabilistic analyses

González de Vallejo, Luis I. and Hijazo Ramiro, Teresa (2008) A new method of estimating the ratio between in situ rock stresses and tectonics based on empirical and probabilistic analyses. Engineering geology, 101 . pp. 185-194. ISSN 0013-7952

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Abstract

This paper describes a new procedure for assessing the ratio between in situ stresses in rock masses by
means of K (K=σH/σv, being σH and σv principal stress) and tectonics for purposes of engineering geology
and rock mechanics. The method combines the use of the logic decision tree and the empirical relationship
between the Tectonic Stress Index, TSI, and a series of K in situ values obtained from an extensive database.
The decision tree considers geological and geophysical factors affecting stress magnitudes both on the
regional and local scale. The TSI index is defined by geological and geomechanical parameters. The method
proposed provides an assessment of the magnitude of horizontal stresses of tectonic origin. Results for
several regions of Europe are presented and the possible applications of the procedure are discussed.

Item Type:Article
Uncontrolled Keywords:In situ stress, Tectonic stress, Geomechanical index, Decision tree, Logic tree, Probabilistic methods
Subjects:Sciences > Geology > Geodynamics
ID Code:15489
Deposited On:05 Jun 2012 10:56
Last Modified:05 Jun 2012 10:56

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