基于瑞典条分法的某露天铁矿采场边坡稳定性分析  

Slope Stability Analysis of an Open-pit Iron ore Mining Based on Swedish Stripe Method

作　　者：王万禄[1] 王黎蝶 夏钢源 侯克鹏[2] WANG Wanlu;WANG Lidie;XIA Gangyuan;HOU Kepeng(Yunnan Phosphating Group Co.,Ltd;Faculty of Land Resources Engineering,Kunming University of Science and Technology)

机构地区：[1]云南磷化集团有限公司,云南省昆明市650000 [2]昆明理工大学国土资源工程学院,云南省昆明市650000

出　　处：《现代矿业》2022年第9期215-218,227,共5页Modern Mining

摘　　要：边坡失稳是露天矿山时常发生的地质灾害之一,严重影响了矿山安全生产,开展露天矿边坡的稳定性评价工作,有助于预防边坡灾害的发生。针对云南某露天铁矿采场边坡,选取典型边坡剖面,利用理正软件中的瑞典条分法对其进行滑移安全系数的计算,得出所选典型边坡剖面分别在正常、洪水和特殊工况下的安全系数及最危险滑动面的位置,进而对该采场边坡进行稳定性分析。结果表明:正常工况下的所有边坡剖面均在安全和稳定的范围内;对于特殊工况下的边坡剖面,只有最高陡边坡剖面A—A是欠稳定的。综合来说,该边坡总体处于稳定状态,但局部仍有滑坡的可能性。Slope instability is one of the geological disasters that often occur in open-pit mines,which seriously affects the safety of mine production.The stability evaluation of open-pit mine slope is helpful to prevent the occurrence of slope disasters.For the slope of an open-pit iron mine in Yunnan,a typical slope profile is selected,and the sliding safety factor is calculated by using the Swedish slice meth⁃od in Lizheng software.The safety factor and the position of the most dangerous sliding surface of the select⁃ed typical slope profile under normal,flood and special conditions are obtained,and then the stability of the stope slope is analyzed.The results show that all slope profiles under normal working conditions are in the safe and stable range;For the slope profile under special working conditions,only the highest steep slope profile A—A is unstable.In general,the slope is generally stable,but there is still possibility of land⁃slide in some parts.

关 键 词：露天采场 典型剖面 瑞典条分法 最小安全系数 边坡稳定性 

分 类 号：TD854.6[矿业工程—金属矿开采]