Research on grouting reinforcement technology for narrow coal pillars gob-side entry retaining
Taking the No.21041 tape intake roadway of Qingwa Coal Industry as the research object,in response to the serious deforma-tion and failure of the narrow coal pillar in the existing support of the No.21041 roadway,the grouting reinforcement scheme and param-eters of the narrow coal pillar were studied through theoretical analysis and numerical simulation under the existing support conditions,and the corresponding grouting reinforcement scheme was determined;according to the on-site mining pressure monitoring results,the displacement of the roadway after grouting has been effectively controlled,and grouting has effectively reinforced the roadway,ensuring the safety production of the working face.
narrow coal pillargob-side entry retaininggrouting reinforcementsurrounding rock deformation
万方数据
维普
