Safety zoning of high-cutting slope along highway in mountainous area

Through coupling the unified strength theory and the Lode stress parameters, a mathematical model is established for calculating the local safety and stability of high-cutting slopes along highway in mountainous area. Based on ArcGIS9.3, the high-cutting slope data are pre-processed and analyzed. And by using the finite element analysis software, the study profiles of high-cutting slope are numerically simulated. The relevant parameters of each node of the studied profiles are acquired. Then the stimulation results are further analyzed and visualized by ArcGIS9.3. Finally, the safety zoning maps of the study profiles are obtained. The K88+680 high-cutting slope of Wushan-Wuxi mountain road in Chongqing is taken as an example profile. The safety zoning maps of three different profiles at K88+660, K88+680 and K88+700 are stimulated respectively. And the safety zoning map of the mountain road from K88+660 to K88+700 is obtained by spatial interpolation. Overall, the study result coincides with the actual information very well. The result can be used to guide the excavation and control of the high-cutting slope mountain road. And the research method has an important reference value to the local high-cutting slope mountain road security research as well.