Three-Dimensional Imaging Of Underground Mine Structures Using Seismic Tomography

Three-dimensional seismic imaging has a number of important advantages over two-dimensional tomography, in artifact suppression and selfconsistency. However, the underdetermined or illconditioned nature of the inversion is typically more severe in three dimensions than in two. Methods for characterizing resolution and robustness are concomitantly more important for three-dimensional studies. Checkerboard resolution tests and robustness tests based on multiple inversion with different starting models provide means of evaluating the results of<br>travel-time inversions for two underground mine sites.