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在用ＦＬＡＣ软件计算分析了有软弱层存在情况下露天矿边坡岩体变形的基础上，以抚顺西露天煤矿为例，分析了不同开发顺序引起的地表位移，并据此分析了该矿北帮地表产生大位移的主要原因．最后，给出了露天采矿工程和地下采矿工程引起的地表变形的一般规律．
Based on the analysis of the deformation of the rock mass in the open pit mine with the presence of the weak layer by FLAC software, taking the Fushun West open-pit coal mine as an example, the surface displacement caused by different development sequences is analyzed. Based on this analysis, Main causes of large displacements on the surface. Finally, the general rules of surface deformation caused by opencasting and underground mining engineering are given.