Subsection-studding all-open-stoping backfilling collaborative mining method

Abstract

The invention discloses a subsection-studding all-open-stoping backfilling collaborative mining method. A panel ore block is divided into primary studdings and secondary studdings; a retrusive mining working mode that the mining is carried out out at intervals, the secondary studdings are mined and then the primary studdings are stoped is adopted; when each secondary studding is stoped, a certain thickness of an ore body is reserved on the top of the ore body and is used as a temporary protection layer; a drilling drift is arranged in each primary studding and is used for drilling the top ore body and the ore body of the primary studding; meanwhile, the drilling drift has a function of filling the drift, the function of filling the drift is achieved by a goaf of a low-level secondary studding; a filling hole is formed in the wall of the drift and is used for immediately filling the goaf of each secondary studding; a large-size stope structure parameter is designed in the ore body; a production mode of mechanical mining work is adopted; a drill jumbo is used for drilling, and a scraper discharges ores, so that the safety and high-efficiency mining is realized. The subsection-studding all-open-stoping backfilling collaborative mining method disclosed by the invention is high in ore recycling rate and high in safety under the condition that a roof surrounding rock is unsteady.

Description

technical field [0001] The invention relates to an underground metal mine unstable rock mass or a filling body, which is an all-empty field mining method followed by a collaborative filling mining method, especially suitable for gently inclined and medium-thick mines where the upper part of the ore body is unstable surrounding rock or filling body Mining of ore bodies. Background technique [0002] The property of the ore body is a gently inclined medium-thick ore body, and the hanging wall is an unstable surrounding rock or filling body. The traditional mining operation ensures the safety of the mining by arranging a large number of pillars, and implements the two-step back mining room and pillar , but the mining of ore pillars, especially the mining of top pillars, is difficult and even impossible to recover, resulting in a large waste of mineral resources. If no ore pillars are left to carry out mining operations, the safety of construction workers cannot be guaranteed. ...

AI Technical Summary

Problems solved by technology

[0002] The property of the ore body is a gently inclined medium-thick ore body, and the hanging wall is an unstable surrounding rock or filling body. The traditional mining operation ensures the safety of the mining by arranging a large number of pillars, and implements the two-step mining room and pillar , but the mining of ore pillars, especially the mining of top pillars, is difficult and even impossible to recover, resulting in a large waste of mineral resources

If no pillars are left for mining operations, the safety of construction workers cannot be guaranteed

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