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砚石台煤矿近三年半时间共发生冲击地压事故50余次。煤层试样的试验分析表明,砚石台煤矿K_1煤层具有冲击倾向性,而K_(3a_2)煤层则不具冲击倾向。构造应力分析表明,井田北翼有较高的构造应力,它是北翼易于发生冲击地压的重要原因。开采深度、顶板条件、煤层倾角和厚度的变化以及挤压带等各项地质因素的分析,阐明了这些地质因素对于砚石台煤矿冲击地压发生的影响关系。采煤方法、支承压力和煤柱等因素的分析,阐明了开采技术因素对于砚石台矿冲击地压的极为重要影响。
Yan Shitai coal mine in the past three and a half time a total of more than 50 times the impact of pressure accidents. Experimental analysis of the coal seam samples shows that the K_1 coal seam of Yan Shitai coal mine has an impact tendency, whereas the K_ (3a_2) coal seam does not have an impact tendency. Tectonic stress analysis shows that there is high tectonic stress on the north wing of the minefield, which is an important reason that the North Wing is prone to rock burst. Mining depth, roof conditions, coal seam dip and thickness changes and the extrusion zone and other geologic factors, and elucidated the impact of these geological factors on rock burst in Yan Shitai coal mine. Coal mining methods, bearing pressure and coal pillar and other factors analysis to clarify the mining technology factors for Yan Shi Tseng very important impact of rockburst.