Method for reducing dilution in ore body mining

Abstract

The invention discloses a method for reducing dilution in ore body mining. The method is suitable for mining of steeply inclined extremely thin ore bodies with surrounding rocks and ore bodies being crushed. The method comprises the steps that inflated air bags are placed above caved ores in a stope, and an empty field between the caved ores and the ore bodies is filled with the air bags, so that the surrounding rocks on the two sides of the stope are prevented from caving and being mixed into the caved ores; the number of the air bags is increased along with releasing of the caved ores, so that the air bags are arranged in the empty field for supporting; and after the caved ores are completely released, the air bags are subjected to subsequent treatment. According to the method for reducing dilution in ore body mining, the problem of ore dilution caused by the fact that the surrounding rocks on the two sides of the stope are mixed into the ores due to caving of the crushed surrounding rocks is effectively solved, and the safety in the ore mining process is improved.

Description

technical field [0001] The invention relates to the technical field of mining, in particular to a method for reducing dilution in ore body mining. Background technique [0002] When the open-stop mining method is used to mine a steeply inclined thin ore body with broken ore bodies and surrounding rocks, the two sides of the stope are easy to cross and enter the stope. , The caving surrounding rock is mixed into the caving ore, which will cause the ore to be diluted and endanger the economic benefits of the mine. [0003] The patent application with the application number CN201810475513.6 discloses a continuous mining method for cantilever-type ore-loading with an inclined or steeply-inclined thin ore body. This mining method only considers the continuity of the mining process, and does not consider the impact of the collapse of the surrounding rocks on the broken upper and lower walls. Therefore, this type of scheme is no longer applicable. [0004] The patent application ...

AI Technical Summary

Problems solved by technology

[0010] The invention provides a method for reducing dilution in mining of ore bodies, in order to solve the problem that when the open-stop mining method is used to mine steeply inclined thin ore bodies with broken ore bodies and surrounding rocks, the surrounding rocks in the stope are easy to cross and enter the mining area. field, which not only brings safety hazards to ore mining, but also causes ore dilution and technical problems that endanger the economic benefits of mines.

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