| Titre : | Stable inversion of measured V P and V S to estimate porosity in fluid-saturated soils (2012) |
| Auteurs : | C.G. Lai, Auteur ; J.G.F. Crempien de la Carrera, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Géotechnique (Vol. 62 N° 4, Avril 2012) |
| Article en page(s) : | pp. 359–364 |
| Note générale : | Génie Civil |
| Langues : | Anglais |
| Tags : | Dynamics In situ testing Theoretical analysis |
| Résumé : | Porosity is an important state parameter which controls the response of porous materials under both static and dynamic loading. The possibility of determining porosity from direct inversion of V P and V S, which are routinely measured in geophysical prospecting, is appealing. A methodology has been recently proposed and successfully applied to a number of sites and it is based on the apparent insensitivity of porosity on Poisson ratio of the soil skeleton ν SK, which is a priori an unknown quantity. So far, however, the functional dependence of porosity on ν SK has only marginally been investigated and doubts arise regarding whether the method is always applicable. This study attempts to investigate thoroughly the stability of the inversion of measured V S and V P to estimate porosity and to assess the degree of well-posedness of the procedure for all the combinations of V P and V S relevant in real soils. |
| DEWEY : | 624.15 |
| ISSN : | 0016-8505 |
| En ligne : | http://www.icevirtuallibrary.com/content/issue/geot/62/4# |
