Abstract:

According to shallow buried depth, thin bedrock and small yl-load ratio features of coal seam in DanTangou coal mine, the Roadway Driving Along Goaf mechanical model was establishmented, through the 4101 goaf basic roof breaking distance from the mined-out area and its breaking distance calculation, the basic roof rock solid coal upper beam stabilization time and a reasonable narrow coal pillar width was analysis. Based on the best timing and gob narrow coal pillar width, roadway comparative analysis of different control schemes have been reasonable technical and economic parameters of bolting, research results achieved initial success.