Abstract:
With the continuous development of shallow coal resources, the problems associated with deep coal mine mining, such as the subsidence of roof and roadway spalling, seriously limit the efficiency of safe coal mine mining.In order to solve the problem of concentration of pressure on coal mine driving work surface under deep mining, the 627 return air entry of No.1 Coal Mine of Huangling Mining Co.,Ltd.,was used as the research background.By analyzing coal seam occurrence conditions and the structural characteristics of the surrounding rock, it was proposed to use a combination of “surrounding rock characteristics analysis+advanced pre-controlled targeted support+optimized support parameters” to tackle hazards, and establish a verification method for reasonable support parameters in deep coal roadways.It effectively solved the technical difficulties of frequent incidents of surrounding rock dynamics disasters, roadway spalling and side deformation during coal roadway excavation in deep buried mines, achieved safe and efficient driving, and ensured the efficient formation of roadway, thus significantly improving the effectiveness of coal roadway support, and ensuring safe production under the coal mine shaft.