Medium-thick and gently inclined broken orebody mine-pillar type upward horizontal layered filling mining method

Abstract

The invention belongs to the technical field of metallic mineral deposit underground mining methods, and particularly relates to a medium-thickness gentle-dip broken ore body upward horizontal layering filling mining method. The method includes the steps that firstly, an ore block is divided into multiple mining panels, each panel is further internally divided into multiple stopes, and stoping of each whole panel is conducted in two steps; in the first step, the stoping stopes are arranged at intervals, and studs are reserved on the two sides of each stope; in each stope, a segment is divided every 10 m, after being completely stoped, the next segment is bonded and filled with cement tailings, and the previous segment is stoped; accurate mining engineering in each panel is conducted on an ore body hanging side, and in order to protect the safety of chamber stoping, a pointed column supporting goaf is reserved in the middle of each stope; shallow hole ore falling is adopted, and ores are discharged through a carry-scraper; and after chamber stoping and filling in the first step are finished, the stopes used in the second step are stoped, and the method for stoping the stopes used in the second step is the same as the method for stoping the stopes used in the first step. The method is suitable for mining a medium-thickness gentle-dip broken ore body and has the beneficial effects of being safe in stoping, low in ore dilution and the like.

Description

technical field [0001] The invention belongs to the technical field of underground mining methods for metal ore deposits, and in particular relates to a mining method for upward horizontal layered filling of medium-thick, gently inclined broken ore bodies. Background technique [0002] The mining of gently inclined and broken ore bodies has always been a difficult problem in underground mining methods. A safe and effective mining method has not been found. In addition, the ore body is broken, which further increases the difficulty of ore body recovery. Traditional mining methods include room-and-pillar mining method, filling mining method, full-scale mining method and other mining methods. These mining methods have better mining effects for thin and extremely thin gently inclined stable ore bodies, but for moderately thick and above gently inclined broken ore bodies The body mining effect is not good. Contents of the invention [0003] The object of the present invention ...

AI Technical Summary

Problems solved by technology

Traditional mining methods include room-and-pillar mining method, filling mining method, full-scale mining method and other mining methods. These mining methods have better mining effects for thin and extremely thin gently inclined stable ore bodies, but for moderately thick and above gently inclined broken ore bodies Body mining is not effective

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