Method for utilizing hydraulic support to improve bauxite recovery rate

Abstract

The invention discloses a method for utilizing a hydraulic support to improve a bauxite recovery rate and belongs to a nonferrous metal mining technology. The method comprises the steps of carrying out analysis treatment on monitoring data and carrying out rock mechanical test; determining a mine pressure monitoring measuring point net of a test mining field and parameters of a mining scheme to complete recovery of the test mining field and a mine pressure observation test; determining distribution parameters and a support manner of the hydraulic support; carrying out mine pressure observation and data treatment on a working surface; carrying out maximal allowable mine rock exposing space numerical value analysis of a hydraulic single body support gridding of the test mining field; and carrying out numerical value analysis on the mine pressure and the mining optimization of the test mining field. A single hydraulic support and a comprehensive mining method mining technology are combined to create a novel recovery process of a slowly-inclined thin ore; and the hydraulic support is used for replacing a natural ore column to recover the ore to the greatest extent, so that the recovery rate of the bauxite ore is improved, the consumption amount of pit woods is reduced and the production efficiency is improved. According to the method disclosed by the invention, the safe production is realized, the cost is saved, the benefit is increased and the service life of a mine is prolonged.

Description

technical field [0001] The invention relates to non-ferrous metal mining technology, in particular to a method for improving the recovery rate of bauxite by using hydraulic props. Background technique [0002] At present, foreign bauxite mines mainly adopt open-pit mining, and there is not much experience in underground mining of bauxite mines for reference. However, the domestic bauxite mines adopt the comprehensive mining method of retaining ore pillars. This method is a traditional mining method for mining gently inclined thin ore bodies. It has the advantages of simple mining process and low production cost. But its disadvantages are: 1. The ore loss rate is high, reaching about 30%, which is not conducive to the rational utilization of resources and the sustainable development of the mine; 2. With the advancement of the working face, the exposed area of ​​the roof becomes larger and larger. As the ground pressure gradually increases, the roof of the local empty area wi...

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Problems solved by technology

But its disadvantages are: 1. The ore loss rate is high, reaching about 30%, which is not conducive to the rational utilization of resources and the sustainable development of the mine; 2. With the advancement of the working face, the exposed area of ​​the roof is getting larger and larger. The ground pressure gradually increases, and the roof of the local empty area will collapse and collapse. It is difficult to manage the roof of the stope, and the safety hazard of the mining of the ore deposit is also relatively large.

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