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通过对地表岩移观测资料的分析研究,获得了厚黄土层薄基岩综放开采条件下岩移参数和岩移角值,揭示了该地质采矿条件下地表移动变形的一般规律和特点。研究认为厚黄土层薄基岩综放开采条件下,地表移动变形在时间上和空间上更为集中,采空区上方地表下沉值大,煤层上方下沉值明显较小,地表下沉系数大,水平移动系数偏小,地表下沉速度快,地表沉降活跃期短,但活跃期的累计下沉量占总沉降量的比重高。
By analyzing the observation data of surface rock mass displacements, the parameters of rock movement and rock drift angle under the condition of fully mechanized caving mining with thick loess are obtained, and the general rules and characteristics of surface deformation under the geological mining conditions are revealed. The study shows that under the condition of fully mechanized top-coal caving with thick loess, the surface deformation is more concentrated in time and space, the surface subsidence value is larger above the goaf, the subsidence value is obviously smaller above the coal seam, the surface subsidence coefficient Large, horizontal movement coefficient is small, the surface subsidence speed, surface subsidence active period is short, but the active phase of the total subsidence accounted for the proportion of the total settlement of high.