Stability Analysis of Open Pit Slope of a Building Stone Limestone and Basalt Mine Based on Strength Reduction Method
According to the geological exploration data of the slope of A building stone mine,the final slope is divided into 5 zones,namely,zone A,zone B,Zone C,zone D and zone E,according to the location,slope direction and height of the final slope in the mining area.The finite element model of the slope is established by using FLAC3D software.The strain increment increases gradually,indicating that the slope deformation intensifies.When the reduction coefficient reaches a certain critical value,the shear strain increment reaches the maximum value on the potential sliding surface of the slope,and the slope is in the ultimate equilibrium state.By comparing the maximum shear strain increment cloud map of different sections,the location and range of potential sliding surfaces are found,and the overall stability of the slope is evaluated.Through this study,the unstable signs of the slope are found in time,and corresponding engineering measures are taken to ensure the safety and stability of the slope.In order to provide theoretical basis and practical guidance for further study of open-pit slope stability.
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