基于岩体结构面识别技术的边坡稳定性分析  

Slope Stability Analysis Based on Rock Mass Structural Plane Identification Technology

作　　者：刘星 卢敬标[1,2,3] 张思远 LIU Xing;LU Jingbiao;ZHANG Siyuan(Sinosteel Maanshan General Institute of Mining Research Co.,Ltd.;Huawei National Engineering Research Center for Efficient Recycling of Metallic Mineral Resources Co.,Ltd.;State Key Laboratory of Safety and Health for Metal Mines)

机构地区：[1]中钢集团马鞍山矿山研究总院股份有限公司 [2]华唯金属矿产资源高效循环利用国家工程研究中心 [3]金属矿山安全与健康国家重点实验室

出　　处：《现代矿业》2024年第5期100-104,共5页Modern Mining

摘　　要：结构面是影响岩体边坡稳定性的最重要因素。利用无人机倾斜摄影技术获取某露天采场边坡的三维实景模型,结合边坡岩体结构三维识别系统(RMV~(3D)),对岩体结构面进行快速准确地识别。通过对边坡的结构面统计分析,识别出3组优势结构面,其中以J1和J2为主。基于结构面分析结果,建立了边坡岩体结构面二维网络模型。结合有限元模拟,探讨了不同结构面组合模式对边坡稳定性的影响。结果表明,结构面的存在导致边坡底部水平应力增大,位移明显增加,对边坡稳定性有不利影响,顺层结构面的存在更易引起滑移变形;2种结构面组合模式下,边坡应力应变特性与单一顺层结构面边坡基本一致。Structural plane is the most important factor affecting the stability of rock slope.The 3D model of an open-pit slope is obtained by using the UAV oblique photography technology,and the rock mass structure 3D recognition system(RMV3D)is combined to identify the rock mass structure plane quickly and accurately.Through statistical analysis of the structural plane of the slope,three groups of dominant structural planes are identified,among which J1 and J2 are the main ones.Based on the results of structural plane analysis,a two-dimensional structural plane network model of slope rock mass is established.Com⁃bined with finite element simulation,the influence of different structural plane combination modes on slope stability is discussed.The results show that the existence of structural plane leads to the increase of horizon⁃tal stress and displacement at the bottom of the slope,which has an adverse effect on the stability of the slope.The stress-strain characteristics of the slope are basically the same as those of the single bedding structural plane slope under the two combined modes.

关 键 词：边坡稳定性分析 结构面 三维识别系统 RMV~(3D)软件 

分 类 号：TD854.6[矿业工程—金属矿开采]