煤峪口矿地表移动变形量计算及规律分析

Calculation and Regularity Analysis of Surface Movement Deformation Amount in Meiyukou Mine

为充分掌握煤峪口矿地表移动变形量和变形规律,通过实地考察调研掌握其切实存在的地表变形现象,通过数值模拟得出初采最大垂直和水平位移为568 mm和183 mm,复采最大垂直和水平位移为2660 mm和740 mm,计算结果低于基于经验公式所得结论,得出煤柱在一定程度上减缓了地表的移动变形,并且煤层埋藏深度对地表变形的影响大于煤层厚度。

In order to fully grasp the amount and law of surface movement deformation in Meiyukou Mine,and grasp the actual surface deformation phenomenon through field investigation,the maximum vertical and horizontal displacement of initial mining is 568 mm and 183 mm through numerical simulation,and the maximum vertical and horizontal displacement of secondary mining is 2660 mm and 740 mm.The calculation result is lower than the conclusion based on empirical formula,and it is concluded that the coal pillar slows down the surface movement deformation to a certain extent,and the influence of coal seam burial depth on surface deformation is greater than coal seam thickness.