急倾斜煤层开采地表移动预计的空间转换方法

Space Transformation Method for Surface Movement Prediction of Mining Steeply-inclined Coal-seam

提出了急倾斜煤层开采岩层滑移空间理论模型和地表移动预计的空间转换计算方法。根据岩层受力变形特点和破坏机理,急倾斜煤层开采上覆岩层存在楔形破坏区和滑移变形区。楔形破坏区内岩层的弯曲变形为滑移变形区内岩层提供移动空间,即滑移空间。滑移空间决定了地表下沉盆地的形态。将急倾斜的开采空间转换为近水平的滑移空间,可直接利用概率积分法的理论和参数来计算急倾斜煤层开采地表移动变形,较好地解决了急倾斜煤层开采地表移动预计问题。

Rock strata slide space theory model and space transformation method of surface movement prediction for steeply -inclined coal-seam was put forward in this paper .Overlying strata could be divided into wedge failure zone and slide deformation zone in steeply -inclined coal-seam mining on the basis of rock stress , deformation characteristic and failure mechanism .Bending deformation of rock in wedge failure zone provided movement space for rock in slide deformation zone .Slide space determined surface subsidence basin＆#39;s form.Transforming steeply-inclined mining space into subhorizontal slide space , the theory and parameters of probability integral meth-od could be used to calculate surface movement and deformation of steeply-inclined coal-seam mining, which solved surface movement prediction problem of steeply-inclined coal-seam mining.