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本文根据淮北张庄煤矿3133综采面观测资料,着重对支架阻力时间曲线的不同类型进行了统计分析,叙述了初撑、微增阻与恒阻三个阶段中阻力及增量与时间变化关系,以此为基础分析了支架与顶板相互作用的特点。得出了影响采场压力的主要岩层厚度相当于4—5倍采高等结论。
Based on the observation data of 3133 fully mechanized coal mining face in Zhangzhuang Coal Mine, Huaibei, this paper focuses on the statistical analysis of the different types of resistance time curves of stents and describes the relationship between resistance and increment and time in the three stages of primary support, micro-resistance and constant resistance , Based on which the characteristics of the interaction between the support and the roof are analyzed. It is concluded that the thickness of the main rock strata that affects the pressure of the stope is equivalent to 4-5 times as high as the other conclusions.