Abstract: According to field reconnaissance and geo-environmental problems in the mining area, the main factors affecting the slope stability are summarized, the slope deformation mechanism is analyzed, and the future deformation range is predicted. Through investigating the subsidence area within the mine museum-accelerator factory and the landslides on the west side of the museum, main factors causing the geo-environmental problems in the mining area are analyzed. The intrinsic factor is the own features of the slope and the external factors are long-term vibration and heaped load. On this basis, the slope deformation mechanism is analyzed, and slope deformation is divided into the following four phases nurturing, tensioning, shearing and sliding. Furthermore, the future landslide deformation range is predicted, which shows that there’s no wide range sliding and the deformation is still in the first two phases. Finally, control measures are proposed to ensure the slope stability.

Key words: goaf, high rock slope, geo-environmental problems of mine, deformation mechanism