基于三维精细化建模有限差分计算的露天矿边坡稳定性研究

以某露天矿为研究对象，通过FLAC3D有限差分数值模拟软件进行模拟计算分析，在仅考虑岩质边坡实际分布的情况下，结合平衡计算结果对岩质边坡进行了稳定性分析，并通过强度折减法计算得到的安全系数对危险程度进行判定。利用Rhino模拟软件与Griddle插件进行三维地层建模，弥补了三维数值模拟中对实际情况复现精度差的缺陷，提高了模拟真实性。通过模拟结果，制定了不稳定边坡防治方案，并对防治后的危险区域稳定性进行了验证，为露天矿的灾害防治提供理论和数据支撑。

Evaluation of slope stability of open pit mine based on 3D refined modeling with finite difference calculation

This paper takes an open pit mine as the research object, and carries out simulation calculation and analysis through FLAC3D finite difference numerical simulation software. The stability analysis of rocky slopes is carried out by considering only the actual distribution of rocky slopes, combined with the results of equilibrium calculation, and the degree of danger is determined by the safety factor calculated by the strength reduction method. The use of Rhino simulation software with a Griddle plug-in for 3D stratigraphic modeling compensates for the poor reproduction accuracy of the actual situation in 3D numerical simulation and improves the realism of the simulation. The simulation results were used to develop a control plan for unstable slopes and to verify the stability of the hazardous area after the control, providing theoretical and data support for disaster control in opencast mines.