国外某铜矿采场边坡稳定性及治理分析研究

Slope Stability and Treatment Analysis of a Foreign Copper Mine Stope

针对国外某铜矿采场边坡工程,通过Geo-studio软件,对边坡内部渗流场进行模拟,在此基础上进行反演分析,获取岩体力学参数,为边坡的稳定性分析与工程治理提供依据。研究表明,降雨入渗是导致边坡发生渗透破坏的重要诱因,强降雨导致边坡水位线迅速上升,土体接近于饱和,有效强度降低;边坡安全系数较无水状态下显著降低,处于不稳定状态,出现深层次破坏;为实现边坡稳定,提出块石压坡方案,提高滑坡前缘抗滑段抗力,坡脚设置排水棱体对地下水引排,降低边坡内部水位线,治理效果显著。

Combined with the slope landslide problem of a copper mine abroad,the seepage field in⁃side the slope is simulated by Geo-studio software.On this basis,the inversion analysis is carried out to ob⁃tain the mechanical parameters of the rock mass,which provides the basis for the stability analysis and treatment of the slope.The results show that rainfall infiltration is an important cause of seepage failure of the slope.Heavy rainfall makes the water level line of the slope rise rapidly,the soil is close to saturation and the effective strength decreases.The safety factor of the slope is significantly lower than that under anhy⁃drous condition,and it is in an unstable state with deep-seated failure.In order to achieve slope stability,the scheme of rock slope compression is proposed to improve the resistance of the anti-sliding section of the landslide front.The drainage prism is set at the slope toe to drain groundwater,and the water level line in the slope is reduced.The treatment effect is remarkable.