深井薄煤层综采面矿压显现规律研究

以刘庄煤矿120601工作面地质条件为背景,通过数值模拟及理论计算分析了深井薄煤层综采面矿压显现特征。并研究了采高与采深对工作面矿压显现的影响。研究结果表明,工作面超前支承压力峰值、采场顶板下沉量与采深成对数关系,随着采深的增大而增大,但增大幅度逐渐减小。而应力集中系数与采深成负对数关系。采高对支承压力峰值影响不大。顶板下沉量与采高成指数关系,随着采高的减小而减小。

Study on Underground Pressure Behavior of Fully-mechanized Mining in Deep and Thin Coal-seam

According to the geological conditions of No.120601 working face in Liuzhuang Coalmine,the characteristics of strata behavior were study by numerical simulation and theoretical calculation in deep and thin coal-seam working face. The effects of mining height and mining depth on strata pressure characteristics were analyzed. The results show that the peak of abutment pressure and the roof movement are logarithmic relationship with the mining depth, there are increase with the increase of mining depth, the increase range decreases gradually. The stress concentration coefficient is negative logarithmic relationship with the mining depth. The effect of mining height on stress peak is very feeble. There are a logarithmic relationship between roof movement and mining depth, the roof movement decreases with the decrease of mining depth.