Collapse Analysis of Jointed Rock Slope Based on UDEC Software and Practical Seismic Load

Once rock slope under the earthquake effect is instability, it will cause huge economic damage and casualties. Therefore, it is necessary to study the mechanism of the collapse analysis of jointed rock slope based on UDEC Software and practical seismic load .As an example that Lan-Cheng-Yu product oil pipeline in K0526+300 jointed rock slope, this geological model of the slope is established on the geological and structure feature of the slope. It is easy to establish the numerical model of rock slope considering the structure characteristics with the UDEC software. The practical 5.12 earthquake loads and the related constraints are inputted to carry through the slope dynamic analysis. It verifies that is feasible to use the UDEC software in the collapse analysis of the crack development of rock slope, through the comparison and analysis between the simulation results and slope body actual damage. results presented in the paper indicates that the effects of earthquake makes the interface between rocks decrease, then damage the integrity of rock mass, ultimately lead to rock slope collapse. It is important significance to prevent and mitigate disaster in areas where earthquakes are common for this study.