In a numerical method for stability analysis of high rock slope

the analysis results will be influenced by the meticulous extent of description for rock mass structure. However

it is difficult to model meticulously for complex jointed rock mass in finite element method at present. In order to solve the problem

discontinuity network modeling and discrete element method(DEM) are combined used in this essay. Based on statistic data and classification of discontinuity

the meticulous description of complex rock mass structure is realized by network simulation program in UDEC. By means of constructing a fine geological model

strength reduction method based on DEM is presented and applied to the stability analysis of a high slope of a hydropower station. Compared the above results with LEM and general DEM

the numerical results show that the potential sliding surface and safety factor of slope are reasonable

with the usage of meticulous description of complex rock mass structure. Consequently

it will provide a new approach for analyzing the failure mode and stability of complex rock slopes.