Based on the key stratum theory, the structure characteristics and movement laws of overlying strata with different mining height are studied.
运用关键层理论研究了采场覆岩结构特征及运动规律。
The numerical results show that the displacement of the overlying strata is nonlinear, and it gets smaller with the increase of the roof height.
数值模拟结果显示上覆岩层的移动是非线性的，上覆岩层的沉降位移随着距离采场顶板的高度增大而减小。
The destruct height of overlying strata is linearly correlation with the compression rate of gangue backfilling.
覆岩破坏高度和矸石充填体压缩率成正线性相关。
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