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在分析保德矿81304综放工作面特殊地质条件的基础上,应用砌体梁模型的“S-R”稳定性理论对工作面基本顶稳定性进行了分析,得出了工作面发生压架事故的原因,直接原因是基本顶的回转变形加剧造成顶板冒落,支架上的载荷发生应力集中,根本原因是冲刷地质构造导致的直接顶变薄。
Based on the analysis of the special geological conditions of the 81304 fully mechanized caving mining face in Baode Coal Mine, the stability of the basic roof of the working face is analyzed with the “SR” stability theory of the masonry beam model. The cause of the accident is directly due to the increase of the basic top turning deformation, which causes the roof to fall off and the load on the support to undergo stress concentration. The fundamental reason is that the direct top thinning caused by erosion geological structure.