补连塔矿区不同采高对覆岩移动和破坏的影响

Influence of Different Mining Height on Overlying Rock Movement and Damage in Bulianta Mining Area

通过利用FLAC3D数值模拟软件,以补连塔煤矿近水平煤层为背景,对补连塔矿区主要影响覆岩移动和破坏的不同采高进行研究,并分别建立了不同采高和地表移动、覆岩破坏、拉伸区的量化关系,可以预测大采高对采空区上覆岩层的损伤程度,并提前采取措施,可防止工作面溃沙、透水和保护地表植被。

Based on the condition of the nearly flat coal seam of Bulianta Coal Mine, we research different mining height that is main influencing factor of overlying rock movement and damage by the numerical simulation program FLAC3D and respectively establish quan- titative relationship between different mining height and surface movement, overlying rock damage, tensile areas, which can forecast damage extent of the overlying rock in large mining height in the mined - out area, and we can take measures to prevent sand inrush and water inrush in the working face and protect plants on the surface.