基于FLAC^(3D)的特大型露天边坡稳定性数值模拟分析

STABILITY ANALYSIS OF OVERSIZE OPEN-PIT SLOPE BASED ON NUMERICAL SIMULATION USING FLAC^(3D)

根据某大型露天边坡的工程地质条件,在岩体质量评价和岩体力学参数分析的基础上,选择具有代表性的区域,采用FLAC3D建立大型露天边坡数值模型,通过三维数值模拟,揭示了特大型露天边坡的力学环境,探讨了围岩移动变形、应力分布和破坏机理,分析了露天边坡最终应力状态、位移量、塑性区,分别进行数值模拟分析,其分析结果对该露天矿设计、优化与施工具有重要的指导意义。

Based on the engineering geological condition of a large-scale open-pit slope, the representative re- gion was selected firstly by rock quality evaluation and rock mechanics parameter analysis. FLAC3D was then em- ployed to build the numerical model of large-size open-pit slope. Furthermore, a three-dimensional numerical simu- lation was performed, revealing the mechanical environment of the oversized open-pit slope, exploring the final movement and deformation, stress distribution and failure mechanism of the surrounding rock, and analyzing the fi- nal stress state, displacement and plastic zone. Finally, all of these factors were analysed by performing numerical simulation. The result of this analysis had crucial guiding significance for design, optimization and construction of this open-pit mine.