凌志达矿双层煤重复开采条件下地表移动变形规律研究

Research on Surface Movement Rules of Lingzhida Mine under Circumstances of Mining Dual Coal Seam repeatedly

为研究凌志达矿下层煤(15#煤)开采对地表移动变形的影响,基于地表观测站的实测数据,分析得出了15#煤层开采的地表移动变形规律及地表移动变形特征参数。通过MSDFVS与FLAC3D对地表移动变形进行预测和模拟,进一步验证了结论的可靠性;通过与上层煤(3#煤)开采时地表实测资料的分析对比,确定了15#煤与3#煤开采地表移动变形特征的差异。

In order to study the effects of mining lower coal seam(15#coal seam) on surface movement in Lingzhida coal mine,analyzes the data of the surface observation station and reaches the surface movement deformation rules of 15#coal seam and the parameters of surface movement deformation. The reliability of the conclusion is further verified by predicting and stimulating the surface movement through MSDFVS and FLAC3 D. The difference of surface movement deformation characteristics between 15#and 3#coal seam is confirmed by contrasting the measured data of supernatant coal seam(3#coal seam).