地震作用下露天矿节理岩质边坡稳定性数值模拟研究  

Numerical simulation study on the stability of jointed rock slopes in open-pit mines under seismic action

作　　者：谢仁青 刘明淳 姜海涛 魏锡康 陈智斌 Xie Renqing;Liu Mingchun;Jiang Haitao;Wei Xikang;Chen Zhibin(Fujian Geotechnical Engineering Investigation and Research Institute Co.,Ltd.)

机构地区：[1]福建岩土工程勘察研究院有限公司

出　　处：《黄金》2024年第7期6-10,共5页Gold

基　　金：国家自然科学基金项目(51674288)。

摘　　要：为研究地震作用下节理边坡的稳定性,以蒙特卡洛方法建立了随机节理裂隙网络模型,运用离散元程序3DEC开展了地震作用下某露天矿边坡稳定性的数值仿真研究。结果表明:地震作用下,坡底部位振动强度、位移等明显强于坡顶部位,坡体节理裂隙对地震波的传播能量具有显著的削弱作用,坡底主要表现为剪切破坏模式,日常生产过程中需加强坡底结构抗震能力。To investigate the stability of jointed slopes under seismic action,a random joint fracture network model was established using the Monte Carlo method.The discrete element program 3DEC was utilized to conduct a numerical simulation study on the stability of an open-pit mine slope under seismic action.The results indicate that under seismic action,the vibration intensity and displacement at the bottom of the slope are significantly stronger than those at the top.The joint fractures within the slope have a notable attenuating effect on the energy of seismic waves.The bottom of the slope primarily exhibits a shear failure mode,indicating the need to reinforce the seismic resistance of the slope s bottom structure during routine production.

关 键 词：露天开采 边坡 节理裂隙 随机节理裂隙网络 地震作用 数值仿真 稳定性 

分 类 号：TD325[矿业工程—矿井建设]