干式松散覆岩充填体下残留矿柱回采综合技术

Comprehensive Research on the Technology of Residual Ore Column Recovery Under Dry Loose Overburden Rock Filling

为保证干式松散覆岩充填体下的残留矿柱的安全回采,采用超前注浆技术固结充填体,形成具有一定强度的人工假顶,通过回采工艺、技术安全经济指标的对比,优选出合适的采矿方法,保障作业的顶板安全.现场工业试验结果证明,采用超前注浆固结技术能很好地维护采场顶板安全,对类似矿山残留矿柱的回采可以提供借鉴作用,具有较好的工程实际意义.

In order to ensure the safe recovery of the residual ore column under the dry loose covered rock filling,the advanced grouting technology is used to consolidate the filling body to form an artificial false roof with a certain strength,and the appropriate mining method is optimized through the comparison of the recovery process and technical safety economic indicators,which ensures the safety of the top plate of the operation.Results of on-site industrial tests prove that the use of advanced grouting consolidation technology can well maintain the safety of the top plate of the stope,and can provide reference for the recovery of similar mine residual ore columns,which is of good engineering practical significance.