Based On The Sensitivity And Reliability Of Slope Stability Study

Along with our country modern construction enterprise rapid development, all kinds of high-rise construction, the mine, the highway, the railroad, the water conservation and water electricity project and so on begin one after another, and in these projects construct processing and completed after serveing the period, it has inevitably formed the massive slope projects, however whether do these slopes often become the restriction project economy reasonable and even the success or failure important attribute. Therefore, how economical, reliably designs the slope project or the analysis appraisal slope stability, its significance is extremely significant.At present, it has very much about the slope stability influence factor analysis and the stability computational method, then how to determine the slope stability influence factor primary and secondary relations from the multitudinous factors, facing the slope influence factor uncertainty to adopt the reasonable assessment method to analyze the slope stability will be an important topic in the slope stability and investigation. Therefore, this article take the slope stability influence factor sensitivity analysis and the reliability analysis as the research content, and unifies some university the soil slope as the project example to carry on the proof, obtains some significance achievement. This article studies the primary content and the achievement are as follows:1. Elaborated systematically the existing slope stability analysis method, has thoroughly studied the slope influence factor uncertainty question which the slope stability analysis and the appraisal faces. Proposed in the traditional slope stability analysis method foundation, fulling consideration in each kind of influence factor uncertainty situation slope stability assessment method;2. Carries on the detailed elaboration in view of the slope stability influence factor, the sensitivity analysis method introduction the slope stability appraisal research, and determines through the sensitive analysis to the slope stability influence most susceptibility factor;3. According to the Monte-Carlo law of the reliability analysis carries on theprogramming design, finally through the computer simulation generate coefficient sample value, according to the generation massive safety coefficient sample value to carry on the slope destruction probability statistical analysis;4. Based on above sensitive analysis and the reliability analysis research methods, carries on the analysis to some university soil slope stability, obtains affection this slope stability primary factor is: The soil bulk specific gravity γ, the cohesive force c, the angle of internal friction φ, the exogenic process and the subsoil water level, in which influence most susceptibility factor is: Cohesive force c and angle of internal frictionφ. According to sensitive analysis result, then will this slope sliding surface c, φ statistical value substitute to edit programme to generate safety coefficient sample, through safety coefficient sample value carry on statistical calculation, when safety coefficient F≤1, the slope the destruction probability is p_f=35.6%, when safety coefficient request F≥1.15, the slope the destruction probability is p_f = 73.8%. And through with the locale slope distortion monitor contrast analysis, has the good uniformity, on the one hand the explanation this article uses assessment method rationality, on the other hand explained this slope is at extremely the non-steady state, must step up this slope the government work.