赵各庄矿急倾斜煤层群矸石充填开采FLAC 3D数值模拟分析

FLAC 3D numerical simulation analysis on the gangue backfill mining of steep seams in Zhaogezhuang Mine

文中以开滦集团赵各庄矿急倾斜煤层群矸石充填开采为例,采用FLAC 3D数值模拟的方法分析了冒落开采和矸石充填开采两种方案采后岩层的移动与变形,得出了在赵各庄矿深部十三、十四水平急倾斜多煤层条件下采用矸石充填开采地表减沉效果明显,能够有效保护地表建筑物的结论,对赵各庄矿深部建筑物下开采具有一定指导意义。

In the paper, rock movements and deformations after two programs of the caving mining and the gangue backfill mining were analyzed using FLAC 3D numerical simulation method taking the gangue backfill mining of steep seams in Zhaogezhuang Coal Mine of Kailuan Group as an example. Conclusion was obtained that the effects using the gangue backfill mining to reduce subsidence were obvious under the conditions of thirteen and fourteen level steep multi - seams in Zhaogezhuang Coal Mine, which could effectively protect the buildings in surface And had a certain significance for the mining under the buildings in deep of Zhaogezhuang Coal Mine.