An Investigation on Stability of a Gravity-arch Dam and Its Abutments by Geomechanical Model Test

This paper describes a test results on stability of a gravity-arch dam and its abutments by geomechanical model test. In this geomechanical model test, the interaction of the dam and untreated abutments are considered. The characteristics of this model, Some aspects in model design, mechanism of rupture of the dam and abutments and the critical loading capacity expected are pre-sented also.