白音华三号矿三维地质模型构建及凸台边坡稳定性分析

Construction of 3D geological model and convex slope stability analysis in Baiyinhua No.3 Mine

为了研究白音华三号露天矿岩土体空间分布形态及凸台边坡稳定性,首先基于钻孔岩心数据及无人机航拍图建立了白音华三号矿地表-地下三维地质模型,然后将地表-地下三维地质模型转化为白音华三号矿的边坡三维数值模型,研究了白音华三号矿凸台边坡的变形及稳定性。结果表明:白音华三号矿地表-地下三维地质模型中的岩土层分布与岩心展示的岩土层分布吻合较高,能够准确反映出边坡岩层的空间分布;凸台边坡破坏主要集中在边坡坡底、凸台边坡坡顶和凸台北面边坡转角处,模拟结果与现场变形区相吻合。

In order to study the spatial distribution pattern of rock layers and convex slope stability in Baiyinhua No.3 Open-pit Mine,first,the surface-underground 3D geological model of Baiyinhua No.3 mine was established based on drilling core data and UAV aerial photography,and the surface-underground 3D geological model is transformed into a 3D numerical slope model to study the deformation and stability of the convex slope of Baiyinhua No.3 Mine.The results show that the distribution of rock layers in the sursural-underground three-dimensional geological model of Baiyinhua No.3 Mine is in good agreement with the distribution of rock layers shown by the core,which could accurately reflect the spatial distribution of slope rock layers.The failure is mainly concentrated on the bottom of the slope,the top of the slope and the corner of the north slope of the convex slope,and the simulation results are consistent with the field deformation area.