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Data analysis for stress measurements by overcoring : new optimization techniques

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Abstract

The knowledge of natural stress state in a rock mass is often an essential datum to solve most modelling problems in geomechanics. Among the quantitative methods of in situ stress measurements at great depth in a borehole, overcoring is usually preferred (fig. 1). Two différent types of measurements are obtained: radial displacements with the "U.S.B.M cell", and strains with the "CSIR triaxial strain cell" or the "CSIRO hollow inclusion gauge" which was developped in Australia (fig. 2).
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ineris-00971862 , version 1 (03-04-2014)

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Armand Lizeur, Hafid Baroudi, V. Baucheron. Data analysis for stress measurements by overcoring : new optimization techniques. International Symposium on Applied of Computer Methods in Rock Mechanics and Engineering, May 1993, Xian, China. ⟨ineris-00971862⟩

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