中文摘要：

采用FLAC^3D软件对非充分采动和充分采动两类模型分别做数值模拟，试验结果表明：在非充分采动条件下，横向重复开采加大了地表最大下沉量，加剧了地表沉陷，改变了下沉盆地的范围；充分采动条件下，横向重复采动不会增加地表最大下沉量，与初次开采相比下沉系数不变，仅改变下沉盆地的范围和形状。

英文摘要：

The full extraction and non -full extraction was simulated using Flac3D software. The results indicate that under non full extraction conditions the repetitive mining in lateral orientation induces the obvious increase of maximum ground subsidence and the change of the range of subsidence basin; and under full extraction conditions the repetitive mining in lateral orientation basically does not change the maximum ground subsidence and the coefficient of ground subsidence compared with initial mining, only changes the range and shape of subsidence basin.