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

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.