Research On The Stability Analysis And The Monitoring Of High And Steep Slope

With the rapid growth of the national economy, China’s highway construction has been an unprecedented development. Steep mountainous terrain and complex geological structure bring a series of problems to road construction. For the high and steep rock slope, the issues of the slope stability and its reinforcement attract much attention.For the high and steep rock slope, the main research are as follows:First of all, the application conditions of the high and steep rock slope are classified, and its deformation and failure characteristics are summarized. On the basis of them, it analyzes the influencing factors of rock slope stability.Secondly, in connection with the Zhejiang other highways high and steep rock slope project, especially Zhu Yong Highway, it proposes a design method of the high and steep rock slope, called "Trinity", including slope shape, slope surface, slope body. Based on the warnings of unfavorable geology, the recommendations for the high and steep rock slope are made, and it summarized the slope monitoring technology for the high and steep rock slope.The factors of stability are analyzed by PLAXIS, based on strength reduction method. Through the safety factor and the nephograms of displacement, it discussed the conclusions on the impact of factors. In the meanwhile, it analyzed and compared with the sensitivity of stability factors using the gray correlation method.Finally, it analyzed the high and steep rock slope on Zhu Yong highway extension from K1+955 to K2+325 by finite element analysis using PLAXIS. It simulated the excavation and supporting scheme, and proved the feasibility. At the same time, combined with the actual situation and monitoring data, it proved reliability and less of PLAXIS.