古汉山矿开采沉陷特征模拟研究

Numerical Simulation of Surface Subsidence Characteristic in Guhanshan Colliery

深部厚煤层特殊开采的地表沉陷特征是一个全新的研究课题,对于深部厚煤层"三下"压煤开采具有重要意义。为研究这一课题,以焦煤古汉山矿采矿地质条件为例,利用通用离散元软件UDEC,对部分开采以及充填开采进行了数值模拟研究,研究了部分开采采出率以及充填开采充填采厚比对地表沉陷的影响,得出了深部厚煤层特殊开采条件下的地表沉陷规律,对其他矿区的"三下"压煤开采也具有一定的参考意义。

Surface subsidence rule of deep thick coal-seam mining is a new research tendency and is very important for mining deep thick coal-seam under river,railway and buildings On the basis of mining and geological condition of Guhanshan Colliery,this paper applied UDEC to simulating part mining and stowing mining process Mining ratio of part mining and the influence of stowing-to-mining height ratio on surface subsidence were researched Surface subsidence rule of mining deep thick coal-seam was obtained,which was referable for mining under river,railway and building in other mining areas.