Abstract: Herein this study aims to explore the creep characteristics of slope rock masses under the combined effects of excavation disturbance and long-term rainfall seepage. Through stepped-loading creep tests, the mechanical properties of phyllite under different pore water pressures were tested, and the creep behavior of the rock masses was systematically analyzed by combining PFC numerical simulation and intelligent image recognition technology. The tests demonstrate a gradual shift in the creep failure mechanism of the rock masses from shear to tensile failure with the increase in pore water pressure and K value. Based on the improved Burgers-PSC contact model, PFC numerical simulation shows that when the deviatoric stress exceeds 33.7 MPa, excavation unloading and pore water pressure jointly promote the formation and propagation of tensile microcracks in the rock. Furthermore, the IRGSM method, proposed based on 3D point cloud coordinates, can intelligently, rapidly, and highly accurately extract fracture features. Compared with experimental results and the ORGSM method, its error is less than 3%. Thus, this research provides a theoretical basis for evaluating the stability of mine slopes under the coupled effects of excavation and seepage.