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为了研究倾斜薄煤层顶板岩层活动规律,运用RFPA2D软件对原型为水平方向200 m、竖直方向200 m,标高为-214 m～-414 m范围内的岩体建立数值模型,对东风煤矿43002工作面煤层上覆岩层破坏进行数值模拟分析,再现煤层的开采所导致的上覆岩层的活动情况。模拟结果表明:随工作面推进顶板破坏状况越严重,图片中的灰度值表示岩石的受力状态,灰度值小的区域为岩石受剪应力集中区域,灰度值大的区域为岩石受拉应力集中区域。
In order to study the law of roof strata movement in inclined thin seam, RFPA2D software was used to establish the numerical model of the rock mass in the horizontal direction of 200 m, the vertical direction of 200 m and the elevation of -214 m ~ -414 m. Surface coal seam overburden failure of numerical simulation analysis, reproduction of coal seam mining caused by overlying strata movement. The simulation results show that the more severe the failure condition is, the more the grayscale value in the picture indicates the stress state of the rock, the smaller the grayscale value is the concentrated stress area of the rock and the larger the grayscale value is the rock Pull the stress concentration area.