Integrated static and dynamic geophysical and geomechanical data for characterization of transport properties

The observatory of transfers in the vadose zone (OZNS-France) offers a unique support for characterizing Beauce limestone aquifer at various spatial and temporal scales. This consists large well associated with external boreholes dedicated to imaging, monitoring, understanding mass heat through zone. An initial geological characterization core samples gave valuable information on facies encountered within It is composed highly incoherent limestones down 7 m-depth massive altered rock layer from 20 m-depth. latter presents fracturation karstification increasing depth. study focuses hard units aims quantify level heterogeneity static dynamic laboratory tests performed samples. Along m three boreholes, representative are tested uniaxial or triaxial conditions. Elastic wave velocities also measured. obtained Young’s modulus, compression strength, P- S-wave highlight strong variations For example, 14 m-depth, maximal strength ranges 13 123 MPa. In addition, 16 P-wave distributed 3,650 5,700 m.s?1. These scatterings confirm formations. interpreted terms high porosity, degree and/or initiate active karstification. double porosity discussed difference between modulus. Their connected important crack density. last parameter estimated S- velocities, 0 0.43, an extremum value 1.21 around 19 values good correlation log imaging independent permeability measurements made units.