特厚煤层综采工作面矿压显现规律研究

为了研究特厚煤层综采工作面矿压显现规律，以小庄煤矿40201工作面为背景，采用数值模拟研究了开采工作面顶板破坏特征。通过现场监测分析了工作面沿倾向和走向液压支架工作阻力，同时与经验公式计算结果进行对比确定了支架工作阻力。结果表明：40201工作面初次来压步距在33.6～46m之间波动，周期来压步距平均21.0m，采动影响系数平均1.42|基于经验公式确定的工作面顶板荷载为0.94MPa，小于支架工作支护强度1.28MPa|40201工作面选用的ZF13000/21/40支架满足生产需求。

Study on Mining Pressure Behavior Law of Fully Mechanized Top Coal Caving Face in Extra Thick Coal Seam

In order to research mine pressure behavior in the fully mechanized coal caving face in extra thick coal seams, the 40201 working face of Xiaozhuang Coal Mine was used as the background, and the damage characteristics of the roof of the mining face were studied by numerical simulation, combined with the work surface along the inclination and the working resistance monitoring of the hydraulic support. The analysis and comparison of the working resistance of the bracket determined by the empirical formula show that the weighting interval of the 40201 working face fluctuates between 33.6m and 46m, the average weighting length is 21.0m, and the mining influence coefficient averages 1.42. The top plate load of the working face determined by the formula is 0.94 MPa, which is less than the working support strength of the support 1.28 MPa; the ZF13000/21/40 bracket used for the 40201 working face meets the production demand.