Abstract
Recently in Japan, the number of the completed dams is getting more and more, but the cost for the management and the operation of completed dams should be reduced. Therefore, the rationalization of the instrumentation for dams is strongly required. In this study, we measured the exterior deformation of an existing rockfill dams with a central earth core using the global positioning system (GPS) as well as the conventional surveying methods, in order to investigate the applicability of the GPS to the measurement of the exterior deformation of embankment dams. Based on the results of case study, we concluded that the GPS could be applied to the exterior deformation of embankment dams.
