Review on the Art of Roof Contacting in Cemented Waste Backfill Technology in a Metal Mine

The backfilling mining method can effectively solve the environmental and safety problems caused by mining. It is key technology to realize green Scientific development has accelerated pace of research on rational utilization mine solid waste improved level technology. history introduced in present paper, it determined that roof-contacting mine-solid-waste This paper introduces three calculation methods similar roof-contacted rates. In this relationship between characteristics slurry made from mines rate systematically analyzed, such as flow law stope (gravity gradient), bleeding shrinkage, natural sedimentation slurry. pointed out stope, washing-pipe water, water for leading way, filling pipeline, shape are closely related rate. influential objective factors, human limited auxiliary leveling measures, “one-time operation” process, high-efficiency top considered, a schematic diagram influencing top-filling structure drawn. At same time, summarizes improvement measures roof connection aspects. These include use expansive non-shrinkable materials, forced technology, strengthening management level. still facing severe challenges, needs be strengthened.