| This paper carried out extensive and in-depth research on stability analysis about rock slope, Combined with ShaZiKou residual landslide monitoring treatment project in Pengshui County, mainly studies three-dimensional numerical simulation and analysis method about bedding limestone additional weak interlayer of landslide in southeast Chongqing, and on this basis proposed governance programs. Mainly be summarized as follows:1. Through rational and quantitative description of some main factors, such as the resistance surplus of saturated slide in main slide controlling surface (belt) and in main slide belt, and the primary causes of the slope losing its stability, rock structure, geological effect and so on, the stability of rock-slope is divided into five grades.2. Rigid Body Limit Balance Method, Sarma Method, Distinct Elements Method (DEM), DDA Method, Artificial Never Network Method widely adopted at present in rock-slope stability analysis is discussed. At the same time, the adaption scopes and defects of these methods are pointed out by analysis.3. The rock structure, crustal stress, the effect of water, slope-height, slope-angle, the technology of slope excavated and other factors that affect the rock-slope stability are analyzed here. The main sources of power that analyze the rock-slope losing stability are river diversion together with its tendency erosion; and-the foot of slope cut resulting from the construction of roads, railways and buildings. When the slope has the conditions of deformation and stability lost, the geology construction stress field and the self gravity field will begin to adjust themselves again. In the course of adjusting the stress field and gravity field, the deformation rock body appears to lose its stability to achieve new balance and stability status.4. Based on the research of the engineering geological conditions, properties of north area of ShaZiKou landslide, through analysis of the causes and make reasonable selection on constitutive parameters, using rigid body limit equilibrium method and strength reduction method based on Ansys in south mountain landslides in two residual under the condition of the stability analysis, through the comparison of analysis results we can obtained that the whole landslide between stability to stable state in natural state, stable to less stable in storm. The overall landslide lack of security reserve, local instability, needs to be comprehensive management. 5. The concept of "membership degree" in fuzzy mathematics is applied to describe the transformation from "affirmation" to "negation" by using the figures from 0 to 1.Considering the uncertain problems of stability analysis which have the characteristics of random and fuzziness, the author uses the fuzzy approximate deduction and the maximum membership degree principle to analyze and evaluate Shazikou bedding rock slide stability. The analysis results is match with the slope actual steady state, and this result demonstrates that the distribution of the proportion of importance is reasonable. The membership functions and the distribution of the proportion of importance can also be applied to analyze the stability of similar rock-slopes in southeast Chongqing.6. According to the stability analysis of south ShaZiKou landslide and calculation results of residual landslides, through comprehensive comparative analysis of safe and reliable technology, economic reasonable, using two rows of anchor cable slide area for strengthening the management, establish the landslide drainage system, and establish the landslide monitoring system to monitor the construction and operation period. |
