Amv. Samani et Gml. Gladwell, Travel time inversion for the determination of stress fields in granular soil media, INVERSE P E, 7(6), 1999, pp. 505-518
Transmission photoelasticity is a well established procedure For solid bodi
es; to the authors' knowledge there is no corresponding technique for parti
culate media, especially granular soil media. This paper presents such a pr
ocedure using the crosshole seismic probing common to geophysical imaging.
We establish a relationship between stresses and travel times, and then pre
sent strategies for inverting the borehole-to-borehole travel times to yiel
d the stress held.