小庄煤矿坚硬厚煤层矿压演化特征及卸压技术

Ground pressure characteristics and pressure relief technology of hard thick coal seam in Xiaozhuang Coal Mine

坚硬厚煤层开采过程中,工作面上覆岩层运移规律和矿压显现特征对采场安全具有重要意义。通过理论分析、数值模拟、现场实践相结合等研究方法,对小庄煤矿坚硬厚煤层开采不同区域的矿压显现特征、来压步距、来压强度变化、工作面覆岩破断规律及坚硬顶板卸压技术进行了研究,揭示了工作面发生动载矿压的机理,有效降低动载矿压造成的危害,对坚硬厚煤层工作面的安全生产和卸压控制具有重要的借鉴和指导意义。

In the mining process of hard thick coal seam,the overlying strata movement law and strata behavior characteristics of working face are of great significance to mining safety.By means of theoretical analysis,numerical simulation and field practice,through the study of strata behavior characteristics,weighting step,weighting strength,overburden breaking law and hard roof pressure relief technology in different mining areas of hard thick coal seam in Xiaozhuang Coal Mine,the mechanism of dynamic loading ground pressure in working face is revealed,which has important reference and guiding significance for safety production and pressure relief control of hard thick coal seam working face.