Abstract: The stability of the western dump in Yongping Copper Mine is reduced due to its rapid rise since the pit wall expansion and due to that most of the earth removed from the wall expansion is clay.The final earth dumping scheme and proposal are made through the engineering geological and hydrological analysis of the dump, the physical and mechanical property test of the dump dispersed material and foundation earth, and the stability analysis and comparison of the earth dumping scheme based on the previous foundation carrying capacity and FLAC3D simulation.

Key words: Dump, Earthmoving scheme, Stabiltiy