逆断层两盘依次回采诱发其应力变化规律的试验分析

Experimental Analysis of Stress Change Induced by Reverse Fault Two Plates Mining in Sequence

摘要: 以某煤矿F₅逆断层地质条件为背景，采用相似材料模拟试验，对逆断层两盘依次回采过程中断层附近煤层顶、底板及断层带的应力演化规律和断层活化规律进行研究。结果表明，由于断层带具有“屏障”作用，在断层保护煤柱的顶、底板会形成较高的集中应力；随工作面推进，断层带及上、下盘断层界面的垂向应力一开始有所降低，而后缓慢增加。

Abstract: Based on the geological conditions of F₅ reverse fault in a coal mine, we carried on similar material simulation test for the stress evolution laws and activation laws of the coal seam roof, floor and fault zone near reverse fault two plates in sequence mining process. The research results show that roof and floor of the coal pillar will form a higher stress concentration due to a "barrier" effect of fault zone; with the advancing of working face, the vertical stress from fault zone and the upper and the footwall interface first decreased and then increased slowly.