Stability Analysis Of Weak Sandwich Slope

Research on mining engineering field currently, for reinforcement and slope excavation is always an important research topic. The research object of this thesis is the rock slope containing weak interlayer in slope, because of the presence of weak interlayer, so many uncertain factors exist in the stability analysis of slope.The stability of the slope through the slope engineering always, when the slope with weak interlayer, will greatly improve its stability characteristics. The presence of weak interlayer changed slope stability under the same conditions; and the external disturbance (excavation, blasting vibration, water gushing) changes the mechanical properties of the slope, and at the same time through soft interlayer "amplification" effect results of slope instability caused by many factors, thus speeding up the process of slope instability.In this paper, the excavation slope to change the macro geometrical dimensions as the main line, change a contrastive study of the same rock conditions and weak interlayer on the stability, and after the key mechanics of soft interlayer parameters, especially the soft interlayer by bringing on the stability of slope water softening after impact. From the analysis of mechanical model and numerical value is discussed in two aspects:the soft interlayer several key points on the stability of the slope (the slope of the slope height, slope angle, the thickness of soft interlayer, angle, cohesion, internal friction angle, to the foot of the slope distance etc.), looking for slope deformation rule according to the displacement and safety factor of slope, and find out the several key points for slope stability caused by size effect.According to the theoretical research, select the project examples are demonstrated. This paper chooses a weak interlayer rock slope stability analysis is carried out, in accordance with the actual data of engineering geology, slope stability analysis was carried out by means of numerical analysis method, the potential sliding surface of slope is determined according to the plastic strain map, making the new excavation scheme, analysis method and verify feasibility of use value, in order to prevent the slope with soft interlayer instability and puts forward suggestions...