金属矿露天采区边坡稳定性分析

Stability analysis of open-pit mining slope in metal mine

金属矿露天开采中,边坡稳定性影响到开采安全系数,直接会造成开采工作停滞,甚至会出现重大安全事故问题,危及到采矿人员的生命安全。本文在研究过程中,选取某地金属矿山为依据,该矿区处于上覆岩层被第四系风积沙覆盖,表层黄土节理发育,很容易形成裂缝甚至出现滑坡地质灾害,并且区域内地质层大部分是砾岩、砂砾岩两种组成,加上自然降水影响,边坡稳定性持续下降,导致边坡软化程度增强,造成不稳定情况频繁出现。现阶段整个矿区处于剥采阶段,在采掘工作加快推进中,没有开展施工作业的区域越来越多,受到风化影响程度愈发严重,亟需对边坡稳定性分析,找出科学合理的边坡加固方式,以此实现边坡稳定系数提升,保障采矿工作顺利开展。

In order to realize that mining enterprises can provide a steady supply of mineral resources for the market economy,it is necessary to reasonably control various factors affecting mining in order to ensure the smooth progress of mining work.In open-pit mining of metal mine,the stability of slope directly affects the safety factor of mining,directly causes the stagnation of mining work,and even causes major safety accidents,which endangers the life safety of mining personnel.Based on this situation,the open-pit mining method of metal mine not only improves the mining speed,but also aggravates the problem of slope instability,which poses a threat to the economic benefits of the mine.In the research process,a certain metal mine is selected as the basis.The overlying rock in this mine is covered by quaternary aeolian sand,and the surface loess joints are developed,which is easy to form cracks or even landslide geological disasters.In addition,most of the geological layers in the region are composed of conglomerate and sand conglomerate.Causing frequent instability.At present,the whole mining area is in the stripping and mining stage.With the acceleration of mining work,more and more areas have not carried out construction operations and are increasingly affected by weathering.It is urgent to analyze slope stability and find out scientific and reasonable slope reinforcement methods,so as to improve the stability coefficient of slope and ensure the smooth development of mining work.