Sensitivity Analysis On Influence Factors And Study On Treatments Of Steep Rock Slope

People often encounter slope instability problems in geotechnical engineering projects,especially in today’s China where the based projects blossom everywhere,rock and soil slope instability problem is particularly prominent.Mines in open pit mining operations often artificial excavated a large number of rock slopes and with the mining level becoming deeper,the slope height increase,and the engineering geological conditions of the slope will become more complex,the slope instability probability will increase greatly.Open pit slope instability seriously restricts the exploitation of mineral resources,and threatens the people’s life and property safety.Therefore,reveal the instability mechanism of open-pit mine rock slope,a reasonable evaluation of the slope stability,sensitivity to study the influencing factors for slope stability and make scientific door reinforcement measures is the objective demand of the development of technical and economic.This paper focuses on the sensitivity of the stability influence factors of steep rock slope and the supporting measures of steep rock slope.Firstly,at home and abroad on the slope stability of the related data access,research the method of strengthening finishing methods at home and abroad,on the slope stability of the influence factors of slope stability and slope sensitivity analysis method.Select the Yunnan open pit the quarry in south side of the steep rock slope as the research object,using the PBD screening test was applied to design the experiment,using the finite element numerical simulation software MIDAS/GTS analysis of slope stability under different factors and levels,using mathematical statistics method to analyze the simulation results,sensitivity of influencing the stability of slope rock are the main factors,that the earthquake intensity on the factors of the stability of the rock slope significantly affect the slope angle,cohesion and severe,and the rank of sensitivity from the highest to the lowest was as follow: Earthquake intensity,slope angle,cohesion,severe.According to the steep rock slope and deformation,choice pre-stressed anchor cable reinforcement method of slope for reinforcement design,and software MIDAS / GTS to the anchoring effect is optimized by finite element numerical simulation.The results show that the selection of prestressed anchor cablesupporting method to reinforce the slope,the slope stability coefficient K=1.294 meet current provisions of the slope stability.The result of sensitivity analysis on influence factors and study on treatments of steep rock slope is basically consistent with the actual situation of slope,which has a certain reference for the similar slope.