CHINA MINE ENGINEERING

Through the active advance support strengthening form of adding grouting anchor cable + anchor cable to the mining roadway of 153307 fully mechanized caving face instead of the support form of single hydraulic prop, the passive support is changed into active support, the roof stress of the roadway is reduced by 32.1% and 7.2% in the vertical and horizontal directions respectively, and the roof subsidence value is reduced by 107mm. The plastic zone is reduced by 1m. The active support is used to strengthen the integrity of surrounding rock, which realizes the safe and efficient production of mine, and provides scientific guidance for mines with similar conditions.