大采高工作面顶板结构及支架阻力研究

Study on roof structure and support resistance of large mining height working face

与普通工作面相比,大采高工作面的覆岩结构更加复杂。通过对东滩矿1316工作面实际地质情况的分析研究,认为该工作面直接顶分为下位直接顶与上位直接顶两部分,总厚度为9.05m,基本顶厚度为15.04m,也由两部分岩层共同组成,并依此建立结构模型。通过对邻近矿井大采高工作面的统计分析,认为支架载荷与采高有着直接关系,但动载系数与采高的影响不大。为保障工作面安全高效生产,对ZY9000/24/58型两柱掩护式支架进行验证,该型支架符合矿井实际需求。

Compared with the ordinary working face, the overburden structure of the large mining height working face is more complicated.Through the analysis and study of the practical geological situation of mine 1316 face, thinks that the working face under the immediate roof is divided into direct roof and upper immediate roof two parts, the total thickness of 9.05 m, the thickness of the basic roof is 15.04 m, is composed of two parts of rock joint, and in accordance with the structure model is set up; According to the statistical analysis of the high working face of the adjacent mine, it is concluded that the support load is directly related to the height of the mining, but the dynamic load factor and the height of the mining are not significant. In order to ensure the safe and efficient production of the working face, the support resistance is reasonably predicted, and the resistance of the working face should be above 8800 k N.