Abstract: Rock slope deformation is subjected to the combinations of geologic structures, structural planes, and filling of structural planes. The geologic structure resulted in the development of structural planes, when weak planes (layers) and inclined planes developed, the slope deformation and the sliding may happen on the exposure face under the influences of those unfavorable factors. By analyzing the broken mechanism of rock slopes in the first place, then confirmed its deformation mainly resulted from the weak layer, the inclined plane, the continuous rainfall and the cutting vibration and so on. The stereographic projection analysis is performed to determine the slope deformation model and scale, finally, slope safety factors are analyzed according to its deformation status and provided targeted treatment measures.

Key words: Rock Slope, Deformation Mechanism, Stereographic Projection, Back Analysis, Treatments