Stability and ground pressure behavior of key layers during shallow close-distance coal seam mining through coal pillars
Jun Song
To address the problems of key layer instability and intense ground pressure during mining under overlying concentrated coal pillars in shallow buried close-distance coal seams, this study takes the 12,101 working face of Halaigou Coal Mine as the research object. By comprehensively adopting methods such as theoretical analysis, similarity simulation experiments, numerical simulation, and field monitoring, it reveals the stability evolution law of the key layer and the characteristics of ground