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以南阳坡矿极近距离煤层下煤层开采为工程背景,针对下层煤开采过程中工作面围岩破碎剧烈、顶板冒落严重、煤壁片帮多发、巷道稳定性差等问题,利用理论分析和数值计算的方法,分析上层煤开采对下层煤工作面覆岩的稳定性特征的影响,对其矿压特征、工作面围岩稳定性状况进行了研究,获得了下煤层工作面覆岩破坏的规律和下煤层工作面顺槽稳定性特征。
In this paper, the coal seam mining under the coal seam near Nanyangpo Mine is taken as the engineering background. In view of the problems such as severe crushing of surrounding rock during operation of coal mining, serious roof caving, frequent occurrence of wall of coal wall and poor stability of roadway, Calculation method to analyze the influence of the upper coal mining on the stability characteristics of the overburden strata of the coal seam in the lower coal seam and to study the characteristics of its pressure and the stability of the surrounding rock in the working face and to obtain the rule of the overburden rock failure in the working face of the lower coal seam And the next coal seam along the groove stability characteristics.