Data analysis for stress measurements by overcoring : new optimization techniques

Armand Lizeur , Hafid Baroudi (1) , V. Baucheron

1 INERIS - Institut National de l'Environnement Industriel et des Risques

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).

Mots clés: CONTRAINTE; SURCARROTTAGE; MESURE

Domaines: Sciences de l'environnement

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⟩