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根据韩城下峪口矿3~#煤层21308综放工作面的复杂开采条件,采用现场矿压观测方法,对该工作面的矿山压力显现特征进行研究。结果表明,受煤层松软及邻近采空等影响,工作面全长范围内存在来压不一致的特点,煤壁片帮冒顶现象较为严重,工作面顶板管理难度大。
According to the complicated mining conditions of No.2308 fully mechanized coal caving face in 3 ~ # coal seam of the Meiyukou coal mine in Hancheng, this paper uses the on-site rock pressure observation method to study the characteristics of mine pressure in this work face. The results show that due to the influence of loose coal seam and adjacent mining, there is inconsistent pressure in the whole working face. The roof collapse of coal wall is more serious and the roof management of the working face is more difficult.