大同煤田石炭系特厚煤层综放开采适应性分析

Analysis on adaptability of fully mechanized top coal caving mining in extra thick coal seam of Datong coalfield

井田范围内大同煤田石炭纪5-1煤层属于特厚煤层,从煤体物理特性、围岩特性、煤体夹矸特性等方面对该煤层顶煤冒放性和综放开采适应性进行了分析,计算了适宜于5-1煤层开采的临界深度,根据5-1煤层赋存条件对采场支架进行了选型确定。分析认为,采用综放开采5-1煤层是较为合理的。

Within the scope of coal seam in Datong coalfield Carboniferous 5-1belongs to special thick seam, the coal seam top coal caving and fully mechanized caving mining adaptability from the physical characteristics of coal, characteristics of surrounding rock, coal clip waste characteristics and so on were analyzed, the appropriate critical depth of the 5-1coal seam was calculated, the support according to conditions of 5-1coal seam was settled. By the comprehensive analysis, it is reasonable to adopt fully mechanized caving mining to mine the 5-1coal seam.