GEOTECHNICAL APPLICATIONS OF A 2-DIMENSIONAL ELASTODYNAMIC DISPLACEMENT DISCONTINUITY METHOD

A general two-dimensional elastodynamic displacement discontinuity met hod is used to model a variety of application problems. The plane stra in problems are: the elastodynamic motions induced on a cavity by shea r slip on a nearby crack; the dynamic response of a backfilled versus a non-backfilled tabular excavation or stope; and the interaction betw een two inclined stopes and a slipping fault. An antiplane strain prob lem is also presented, where slip occurs along a crack near the surfac e of a half plane. These problems indicate the wide potential of this method in investigating elastodynamic effects, especially for crack-li ke geometries.