A Continuous Mining Method Applicable to High and Middle Sections

Abstract

The present invention proposes a continuous mining method suitable for the high and middle section, including S1, mining standard engineering, including S101, dividing the stope at the high and middle section into several layered stopes; S102, excavating the roadway outside the vein along the direction of the footwall of the ore body , and then excavate the sub-level entry and the stope entry, the center line of the stope entry is perpendicular to the center line of the corresponding layered stope; , the stope roadway is connected; a waste rock chute and an ore chute are respectively arranged; S104, no bottom column is left in the stope at the high and middle section, and the bottom roadway is directly excavated on the upper part of the floor, and the free surface is expanded to the boundary of the mine, Form the bottom-drawing space, then lift the top upwards for mining, and transport the mined ore away; S2, mining engineering: the stope with relatively stable rock conditions adopts the upward horizontal layered filling mining method; the stope with relatively broken ore-rock conditions Upward horizontal approach filling mining method is adopted. The above method can effectively improve the mining strength and mining efficiency of the thin ore body.

Description

technical field [0001] The invention relates to the technical field of mining, in particular to a continuous mining method suitable for a middle section, wherein the middle section refers to a stope with a middle section height of 80 to 150 meters. Background technique [0002] The steeply inclined thin ore body usually refers to the ore body with the dip angle greater than 55° and the thickness of the ore body less than 4m. At present, the main mining methods of steeply inclined thin ore bodies are shallow hole ore retention method and wall-cutting filling method. The shallow hole ore retention method requires that the thickness of the ore body is not more than 4m, the inclination angle is more than 55°, the ore rock is stable, and the appearance is single. It is a mining method that is more suitable for small-scale mining. In the dry filling method, the surrounding rock and ore are respectively caved out during the mining process. The mined ore is released through the chu...

AI Technical Summary

Problems solved by technology

However, the mining intensity of these two steeply inclined thin ore body mining methods is low, the ore recovery efficiency is low, and continuous mining cannot be carried out in the stope, and the ore selection grade is low, and the ore loss rate and dilution rate are relatively large, which greatly reduces the mine. economic benefits

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