复杂条件下露天采场边坡变形分析

露天采场边坡的变形特征对边坡稳定性评价、露天开采以及对边坡变形监测具有重要意义 ,复杂条件下 ,露天采场边坡的变形特征难以预测。本文采用快速拉格朗日分析 (FL AC)方法对金牛公司露天采场稳定边坡、不稳定边坡时空上的变形特征以及空区和分步开挖对边坡变形特征的影响进行了综合分析。结果表明 :FL AC方法在分析复杂条件下的边坡变形特征方面显示了较强的优势 ,稳定边坡和不稳定边坡有着各自不同的变形特征 ,空区和开采速度对边坡变形产生一定的影响。

NUMERICAL ANALYSES OF SLOPE DEFORMATION OF AN OPEN PIT UNDER COMPLICATED MINING CONDITIONS

To understand characteristics of slope deformation of an open pit is very important for its stability evaluation, mining and slope deformation monitoring. However, it is difficult to predict due to the complicated mining conditions. In this paper, FLAC method is used to spatiotemporally analyze the characteristics of deformation of a stable slope and an unstable slope of an open pit, and the effects of excavated zones and multi-stage cutting on the slope deformation. The result indicates that FLAC is an effective method for analyzing the deformation of a slope either stable or unstble, and that excavated zones and mining velocity have some effects on the deformation.