To improve the model of geomechanical processes, it became necessary to obtain additional information about the parameters of loose ores, deformation characteristics (Young's modulus) and strength parameters under loads that correspond to the conditions of occurrence of ores. Experiments on the cyclic change in the effective vertical pressure within 0.5 - 2.0 MPa at a total pressure of up to 8 MPa showed that the tested samples practically do not restore the deformation. When shearing the samples, the vertical deformations increased during the entire period of shearing. This indicates that the mineral grains of the ore on the surface of the landslide are overcompacted and compressed.