厚煤层大采高长工作面地表移动规律分析

Analysis on Surface Movement Law of Long Mining Face with Large Cutting Height in Thick Coal Seam

为了掌握煤炭开采后对地表的影响,文章以晋煤集团成庄矿5310大采高工作面为例,建立地表移动观测站,收集地表移动数据,并对观测数据进行分析,得到地表下沉曲线、地表沉陷影响范围和地表移动关键参数。结果表明:大采高工作面开采后,地表移动和变形值较大,地表沉陷影响范围广,在走向上最大影响范围超过300m。

To investigate the influence of coal mining to surface, based on the condition of 5310 large cutting height working face in Chengzhuang Coal Mine of Jincheng Coal Group, surface move observation stations were built and the surface strata movement data was collected and analyzed, obtaining the surface subsidence curve, surface subsidence influence scope and key parameters of surface movement. Results show that, the mining of large cutting height working face causes great surface movement and deformation, and surface subsidence with wide range influence, the influence range alon~ strike is more than 300m.