The Research On Rock Slope Stability Analysis And Search Of Its Dangerous Slide Path

With the rapid development of our national economics, the construction of basic facility correspondingly becomes faster. Because of unique engineering geological conditions, there are some outstanding problem of rock slope in China, which we often unavoidably meet during the engineering construction. In order to reduce and prevent from various kinds of the emergence of rock slope accident, it is necessary to strengthen research of rock slope stability analysis.Supported by hundreds of domestic and international bibliographies, this paper systemically details the development process and achievement of the research on stability analysis for rock slope in recent years, and introduces various kinds of analytical methods, then gives brief remarks to each means respectively. On the basis of summarizing forefathers' research results, this paper summarizes factors influencing rock slope stability into geological and not-geological factor, at the same time, on the ground of rock mass structure controlling theory, the engineering geology model of the rock slope is grouped into two typical classes, one is the model with obvious controlling discontinuities, the other is the model without obvious controlling discontinuities, and this paper correspondingly analyzes their types of destruction. Based on the theory of probable statistics and the principle of Monte Carlo method, this paper sets up statistical model of joint and its network system of simulation, also turns it into procedure. Taking elastic and plastic characteristics of rock into account, in the paper, on the basis of equivalent Mohr-Coulomb criterion, this criterion is successfully applied to FEM program-Ansys5.7 by artificial conversion on rock-soil material parameters only, and this paper proves the size relation between the material transformed parameters and original parameters, it is also shown that this criterion is reasonable through example analyse of the rock slope with obvious controlling discontinuities, and can be adopted to rock material, the result of calculation is little and conservative, the paper puts forward the concept that the rock slope of obvious controlling discontinuities with high expectations for precision of displacement should adopt equivalent Mohr-Coulomb to imitate rock material, the criterion that its rotundatus on the π plane passes through outer anglepoints of Mohr-Coulomb...