The Stability Of Side-Slope In Xigeda Strata Classification And Mechanisim Study

This paper is focused on the stability of excavated slope in Xigeda strata of the highway from Xichang to Panzhihua. Through the indoors experiments, the main mineral composition of rock is examined first, secondly the main chemistry composition is tested, lastly the main tiny view structure and the main engineering properties in Xigeda strata of the Xi-Pan area is respectively studied.The stability of existing excavated slopes in Xigeda strata is studied through the mathematical statistics methods, such as research and study on site, matter element analysis and fuzzy clustering analysis etc. Based on the stable degree, four types are classified: stable, secondary stable, secondary unstable and unstable and other twenty typical types. The distinctive features are provided too. The distortion and the distribution of stress on the above types are discussed through the finite element method (FEM. And the distortion and stress dependence of all kinds typically stable slopes are also discussed theoretically. The centrifugal model testing of the new excavated high slopes about the Xinjiu conjugation line is made. Thus the value of distortion and stress-strain and the variable tendency in fourteen years is found out. According to the observed displacement information on spot, the stability is forecast through the neural network method on the new, high slopes in the Xinjiu conjugation line. Based on the above research, the cause of destruction on all types of slopes is summarized and the corresponding suggestions for control measurement are put forward .The research findings will undoubtedly offer great value to the construction and management of Xi-Pan highway.