Identification of the Hydro-Mechanical in- Situ Properties of Tournemire Argillite from Mine-by-test Experiment

摘要

A mine-by-test was performed in the IRSN experimental site in the Tournemire argillite, during the excavation of a new gallery in 2003. Thanks to the various measurements of pore pressure and displacements then recorded, it has been possible to identify by inverse analysis the in situ hydro-mechanical properties of the rock mass. The use of the convergence-confinement method enables us to reproduce the main tendencies of most of the recorded measurements. In addition, viscoplastic calculations have been performed in order to appraise the origin of the delayed response of the rock mass.