露天矿节理岩体边坡稳定性研究  

STUDY ON STABILITY OF JOINTED ROCK SLOPE OF AN OPEN IRON MINE

作　　者：王家臣[1] 常来山[1] 夏成华[1] 石伟[2] 邓克[2] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083 [2]鞍钢集团鞍山矿业公司,辽宁鞍山114001

出　　处：《岩石力学与工程学报》2005年第18期3350-3354,共5页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家自然科学基金资助项目(50274069);教育部高等学校优秀青年教师教学科研奖励计划资助项目

摘　　要：针对眼前山露天矿南帮节理岩体边坡的结构特征,通过现场节理调查及统计分析,采用Monte-Carlo随机模拟方法,进行了节理三维网络的计算机模拟,研究确定了南帮边坡的节理岩体强度和破坏模式。通过滑动面自动搜索及FLAC数值模拟,系统地计算分析了南帮节理岩体边坡现执行开采和调整方案随采场逐渐下延的稳定状况,指出将三并段边坡的台阶坡面角由65°调整为60°可以从根本上改善眼前山露天矿南帮边坡的稳定状况,在矿山服务年限内满足开采的稳定性要求。According to the structure characteristics of the joint rock mass of the south slope of Yanqianshan Open Iron Mine, the 3D joint network is simulated and shown by Monte-Carlo random simulation technique based on the joint surveys in-situ and statistic analysis： and the strength of the jointed rock mass and the failure modes of the slope have been defined. The stability states are systematically studied by means of searching automatically the critical slip surface and FLAC numerical simulation for the present executing project and the revising project. That the slope angle of three benches becoming one large bench is revised from 65° to 60° can basically improve the stability state of the south slope; and meet the mining stability demand durine the service life of the open mine.

关 键 词：岩石力学 节理岩体 边坡 三维网络 稳定性分析 FLAC模拟 

分 类 号：TU45[建筑科学—岩土工程]