基于赤平投影法的夏日哈木露天采场边坡稳定性分析  

SLOPE STABILITY ANALYSIS OF XIARIHAMU OPEN PIT BASED ON STEREOGRAPHIC PROJECTION METHOD

作　　者：陆建同 李军[1] 何平[1] 孟祥超 LU Jian-tong;LI Jun;HE Ping;MENG Xiang-chao(ShandongLunan Geological Engineering Survey Institute(Shandong Provincial Bureau of Geology and MineralResources No.2 Geological Brigade),Yanzhou 272100)

机构地区：[1]山东省鲁南地质工程勘察院(山东省地质矿产勘查开发局第二地质大队),山东兖州272100

出　　处：《云南地质》2023年第1期75-80,共6页Yunnan Geology

摘　　要：本文通过地表基岩开挖工程、岩心定向钻进等对各分区优势结构面控制研究,认为拟建露天采场境界内主要优势结构面为剪节理和片麻理,与边坡斜交或反向为主,可能产生楔形滑坡。选择赤平投影图解法对其边坡稳定性定性分析,筛选可能发生楔形滑坡的控制点,根据形成楔形体两组结构面的交线倾角大小及两组结构面交线倾向与边坡倾向关系预测发生楔形型滑坡可能性大小;根据各控制点发生楔形滑坡可能性大小进行边坡防治分区划分,提出相应的楔形滑坡防治措施。Thestudy on the control of dominant structural planes of each zone were conducted through surface bedrock excavation project,directional core drilling and other slope projects in this paper.Based on this,we propose that the main dominant structural planes withinthe proposed open pitare shear joints and gneissosity,which are mainly oblique or reverse to the slope,and may lead to wedge landslides.Qualitatively stability analyses of slopes by stereographic projection graphic method were conducted byscreening control points that may cause wedge landslide,and then predicting the possibility of wedge landslideaccording to the dip angle of the intersection of two groups of structural planes forming the wedge,and the relationship between thedipof intersection and slope.The slope prevention zones weredivided based on the possibility of wedge landslide at each control point,and the corresponding prevention measureswere proposed.

关 键 词：赤平投影 优势结构面 边坡稳定性 楔形滑坡 露天采场 夏日哈木镍钴矿 青海 

分 类 号：P642.22[天文地球—工程地质学]