青麦地大型石灰岩露天矿高陡边坡结构面特征及其对边坡稳定性的影响  

Structural Plane Characteristics of High-steep Slope and its Influence on Slope Stability in Qingmaidi Large Limestone Open-pit Mine

作　　者：张雄伟[1] 杨泽[1] 周晓超[1] 梁仕义 李克钢[2] ZHANG Xiongwei;YANG Ze;ZHOU Xiaochao;LIANG Shiyi;LI Kegang(Kunming Nonferrous Metallurgy Design and Research Institute Co.,Ltd.,Kunming 650231,China;Faculty of Land Resources Engineering,Kunming University of Science and Technology,Kunming 650093,China)

机构地区：[1]昆明有色冶金设计研究院股份公司,云南昆明650231 [2]昆明理工大学国土资源工程学院,云南昆明650093

出　　处：《贵州大学学报（自然科学版）》2022年第2期66-71,88,共7页Journal of Guizhou University:Natural Sciences

基　　金：国家自然科学基金资助项目(41362013)。

摘　　要：针对青麦地大型石灰岩露天矿高陡边坡的稳定性问题,通过现场调查统计分析,主要是由层理优势结构面所控制。利用赤平极射投影图分析层理优势结构面对边坡稳定性的影响程度,依据分析结果,适当加大了该露天矿安全平台和清扫平台的宽度尺寸,并将该层理结构面考虑到岩体稳定性计算分析模型中。根据赤平极射投影和稳定性计算结果表明:通过合理布置采场边坡结构参数,层理结构面对边坡的稳定性影响很小,边坡处于稳定状态,为现场开采设置边坡结构参数提了施工指导依据。Aiming at the stability problem of high slope in Qingmaidi large Limestone Open-pit Mine,through field survey and statistical analysis,it is mainly controlled by the bedding dominant structural plane.Then,the stereographic projection is used to analyze the influence of bedding dominant structure on slope stability.According to the results of impact analysis,the width of the safety platform and cleaning platform of the open-pit mine are appropriately increased,and the bedding structural plane is taken into account in the calculation and analysis model of rockmass stability.According to stereographic projection and stability calculation,the results show that through the reasonable arrangement of stope slope structural parameters,the bedding structure has little impact on the stability of the slope,and the slope is in a stable state,which provides a construction guidance basis for setting slope structural parameters for on-site mining.

关 键 词：高陡边坡 优势结构面 赤平极射投影 安全系数 强度折减法 

分 类 号：P64[天文地球—地质矿产勘探]