Gently-inclined extremely-thin gold vein mining method

Abstract

The invention discloses a gently-inclined extremely-thin gold vein mining method. A chamber structure is arranged in the mode that a plurality of standard ore blocks are divided in the vein trend; the length of the ore block is 50m, the vertical height of the middle section is 25m, the width is the natural extension inclined length of the middle section with the vertical height of 25m along the vein; the mining preparation cutting method comprises the following steps that a lower-stage haulage roadway is arranged at the end part of the lower middle section of the ore block along the vein trend; an upper-stage haulage roadway is arranged at the end part of the upper middle section of the ore block along the vein trend; and in-vein cutting rises are arranged at intervals of 10m perpendicular to the trend of the vein, and stoping operation is carried out along the in-vein cutting rises; The gently-inclined extremely-thin gold vein mining method has the advantages of being low in mining preparation, cutting and filling engineering cost, high in mechanization degree, high in production efficiency and small in dilution loss, and still has excellent economic benefits even if the mining method is used for mining the gently-inclined extremely-thin gold vein with the inclination angle smaller than 30 degrees and the thickness smaller than 0.8 m, so that mineral resources are fully and effectively utilized.

Description

technical field [0001] The invention relates to the technical field of gold mining, in particular to a mining method for gently inclined extremely thin gold veins. Background technique [0002] Mining of gently inclined extremely thin ore bodies is a difficult problem in the mining industry at home and abroad. Due to the thin ore body and gentle inclination angle, the working space is limited, and the ore cannot slide by itself, so the degree of mechanization is low, the production efficiency is low, the loss of dilution is large, and the mining accuracy , Cutting and filling costs are high, and production costs are high, resulting in poor economic benefits for the mining of gently inclined extremely thin ore bodies, and mining companies are reluctant to mine, which seriously affects the effective use of mineral resources and strictly restricts the development of mine production; [0003] The mining industry at home and abroad has made many attempts on the mining method of g...

AI Technical Summary

Problems solved by technology

[0002] Mining of gently inclined extremely thin ore bodies is a difficult problem in the mining industry at home and abroad. Due to the thin ore body and gentle inclination angle, the working space is limited, and the ore cannot slide by itself, so the degree of mechanization is low, the production efficiency is low, the loss of dilution is large, and the mining accuracy , Cutting and filling costs are high, and production costs are high, resulting in poor economic benefits for the mining of gently inclined extremely thin ore bodies, and mining companies are reluctant to mine, which seriously affects the effective use of mineral resources and strictly restricts the development of mine production;

[0003] The mining industry at home and abroad has made many attempts on the mining method of gently inclined ultra-thin ore bodies. According to the different geological conditions of the mine, a variety of mining methods have been derived. The common point of these methods is to strip off the surrounding rock, expand the operating space, and meet the needs of mining operations. Need; According to the different ways of expanding the working space, it can be summarized into two categories, one is the wall-cutting filling method, and the other is the strip-cutting method, but these two methods have not yet been solved. The problem of high cutting and filling costs and high production costs

Images