The Design Of High Rock Slope

Based on preferred plane theory and from the viewpoint of system engineering , in this paper, not only stability analysis and evaluation but also engineering design theory and method of high rock slope are discussed . It mainly includes several contents as follows.1) By summation and further study on theory and practical experience of stability analysis and design of high rock slope, the technique route and methods which formed by the integration of stability analysis with engineering design and informational construction are demonstrated.2) From mechanism of deformation and instability of high rock slope, the characteristics of slope deformation and modes of slope failure are studied in this paper. The influential elements of high rock slope stability are also studied in this paper. The stress is placed on the formation mechanism and the basic regularities of distribution of the unloading fracture zone of high rock slope. Moreover, the engineering behaviors of the unloading fracture zone and its mechanical significance are discussed.3) Because the influential elements of modes of slope failure are so much, furthermore, the actual slopes are quite different, in order to improve accuracy of the analysis results, the author emphasizes that comprehensive analysis and evaluation of high rock slope stability is required. Comprehensive analysis and evaluation means multiple angles and various approaches which combined static analysis with dynamic analysis, combined qualitative analysis with quantitative analysis, and quantitative analysis with all kinds of mathematical models method to analyze the stability of high rock slope. It approaches several analysis methods, such as geological analysis and engineering analogism method of qualitative analysis, limit equilibrium method and finite element method of quantitative analysis of high rock slope. Based on study of foreman, indexes sorting, choosing parameter, and application in actual engineering of quasi-quantitative analogical quantification are discussed in this paper. It can be referential significant for actual engineering. It discussed about the thinking route, choice of border extent and constraint condition of FEM application into analysis and design of high rock slope, and how to use the calculative results of FEM to analyze and appraise the high rock slope.4) The research of study rule, content and method of slope shape, drainage system and anchoring bar support of high rock slope are reviewed in this paper. It can be directive and significant for the actual engineering.5) The conceptions of optimizing design, feedback design and informational construction modes of high rock slope are suggested. Preliminary studies of inverse analysis of displacements which based on combination of BP neural network with finite element method are also discussed in this paper.6) It demonstrated that we should put emphasis on acquiring and analyzing the primary qualities data of engineering geology in stability analysis and design in slope engineering, especially in high rock slope engineering. It also discoursed about analysis of supervision data.7) At last, combined with an engineering example, it approached and summarized the application of the theory and method of stability analysis and engineering design of high rock slope. The conclusion can be used as analogical reference for other slope engineering.