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本文以同煤集团云冈矿8212工作面地质条件为背景,对工作面矿压规律进行实测分析研究,结果表明:1)工作面支架平均工作阻力为2 016.1 k N,占其额定工作阻力(7 000 k N)的28.8%,该工作面支架的额定工作阻力可以满足顶板的管理要求。支架前后柱工作阻力分布较平均,能正常工作。2)工作面支架平均循环末阻力为3 147.0 k N,占其额定工作阻力(7 000 k N)的45.0%,该工作面平均循环末阻力主要分布区间为2 800~3 800 k N,即工作面支架的额定工作阻力完全可以支撑顶板。3)工作面超前支承压力作用范围在35~38 m处,随工作面的逐步推进,其增幅也逐步增加。该结论可为类似条件下其他工作面开采过程中矿压显现规律的研究提供参考。
In this paper, with the geological conditions of the 8212 working face of Yungang Mine of Tongmei Group as the background, the strata behavior law of working face is measured and analyzed. The results show that: 1) The average working resistance of working face bracket is 2 016.1 kN, accounting for its rated working resistance 7 000 kN) 28.8%, the working face of the rated working resistance of the roof to meet the management requirements. Work before and after the stent stent distribution of the average resistance to normal work. 2) The average end-of-frame resistance of working face supports is 3 147.0 kN, accounting for 45.0% of the rated working resistance (7 000 kN). The end-of-cycle resistance of the working face mainly ranges from 2800 to 3800 kN, Working face support the rated working resistance can support the roof. 3) The supporting pressure range of working face is 35 ~ 38m, with the gradual progress of working face, its increasing rate also increases gradually. The conclusion can provide reference for the study of the occurrence of underground pressure in other working face mining under similar conditions.