Three-Dimensional Simulation Stability Analysis of Slopes from Underground to Open-Pit Mining

Abstract

The stability of mine slopes is an important factor influencing the orderly production of mines and the safety of people’s lives and property. The stability of slopes can be effectively determined by means of three-dimensional simulation analysis. Some 3D simulation analysis methods are based on 2D analysis, and are still essentially 2D analysis methods, whereas this digital simulation analysis uses a true 3D analysis method. This method can reflect the overall slope stability of the mine in a more realistic way, and at the same time, the situation of the selected sections can be observed, making the analysis more scientific and rigorous. This study takes the Shizhuyuan Nonferrous Metal Mine as an example and studies the safety stability of mine slopes through true 3D safety analysis. The results show that the open-pit slopes of the Shizhuyuan mine are stable. The overall model results show that there is only a small amount of tensile damage and no penetration; the section results show that the absolute value of tensile stress is generally small, with a maximum of 1.45 MPa being less than the tensile strength of the material (7.04 MPa). After the model monitoring simulation, it is found that the displacements of each monitoring point are in the process of fluctuation and then stabilisation, which can also indicate that the slope is finally in a stable state. Comparing the above results with the conclusions obtained from the 2D analysis method, the conclusions are found to be in general agreement, indicating that the true 3D simulation analysis method is effective and feasible.

Reassessment of the Stability Conditions in the Lignite Open Pits of Oltenia (Romania) in Relation to the New Local Seismic Context as an Imperative for Sustainable Mining

“…A possible continuation of this study envisages the use of software that performs stability analysis based on finite elements or the finite differences method [73][74][75][76][77], 3D modeling [78][79][80][81][82] and probabilistic approaches [83][84][85][86].…”

Analysis of Soil Slope Stability under Underground Coal Seam Mining Using Improved Radial Movement Optimization with Lévy Flight

“…The slope safety factor is an essential metric for assessing the stability of slopes. Scholars have studied the computation and solution of the safety factor using the finite element and limit equilibrium methods for slopes subjected to underground mining in great detail [10,11]. Leng et al [12], based on the Hoek-Brown strength criterion, calculated the safety factor of karst slopes in Pusa after underground mining using FLAC3D, and obtained the changes in the stability of the karst slope after mining.…”