Abstract
This study investigated deformation behavior that has been recognized as a precursory phenomenon of slope failure. The slope failure tests were conducted in which the deformation behaviors of model slopes were measured. The surface displacement of a sand model slope was measured using an invar wire extensometer, and the underground displacement was measured with a connected inclinometers together (or an inclinometer). The results indicated that the surface and ground displacements behaved similarly. The results also clarified the underground deformation behavior under different stress conditions. In addition, the results of the underground displacement measurements using the inclinometer was applied a prediction method using the reciprocal of velocity, and this paper showed the effectiveness of underground displacement measurement and the prediction of slope failure by the inclinometer.
