Mining method for underground mine with ore-drawing roadway arranged between every two adjacent stopes

Abstract

The invention discloses a mining method for an underground mine with an ore-drawing roadway arranged between every two adjacent stopes. The mining method comprises the steps that an ore body is divided into a plurality of ore blocks along the trend of the ore body, the length of each ore block is 40-80 m, then each ore block is divided into an ore chamber and a jamb, and a middle column is arranged between the bottoms of each ore chamber and the corresponding jamb; a hanging wall in-vein air return roadway and a footwall in-vein transportation roadway are arranged along the trend of the ore body, and the footwall in-vein transportation roadway is arranged outside the ore body and is parallel to the trend of the ore body; an orepass is arranged on the other side of the footwall in-vein transportation roadway; and when the thickness of the ore body is larger than 40 m, the ore chambers and the jambs are arranged perpendicular to the trend of the ore body, each ore-drawing roadway betweenthe bottoms of the two corresponding adjacent stopes is arranged perpendicular to the trend of the ore body, the length of each stope is equal to the length of the ore blocks, the width of each stopeis 13-20 m, the height of each stope is 40-100 m, and drilling chambers are arranged at the bottom of the upper-middle section. In the mining method, during two-step stoping, tunneling in a filling body is not needed, and the novel method is large in production capacity, small in mining project amount and efficient.

Description

Technical field: [0001] The invention belongs to the technical field of underground mine mining, and relates to a mining method for an underground mine with two adjacent stopes and one mining lane. It is mainly suitable for inclined ore bodies with good stability of ore rocks and ore body thickness greater than 26m. Background technique: [0002] In mining, the rock drilling roadway is constructed in the middle of the mine house, the mining roadway is constructed in the middle of the ore pillars on both sides of the mine house, and the ore exiting road is constructed to the rock drilling roadway of the mine house. The bottom adopts a V-shaped trench to receive ore, and the ore is discharged from both sides of the mine. During the two-step mining, the mining roadway is excavated in the filling body, which is difficult to construct and requires steel support, followed by pouring of concrete, resulting in high construction costs, slow progress, and high safety risks. The mini...

AI Technical Summary

Problems solved by technology

[0003] In the Chinese Patent No. ZL 201610439450.X "A New Method for Collaborative Mining of Double Stopes in Underground Mine", the left mine room and the right mine room are divided into the ore block, and the left mine room finally accumulates high residual ore, which is difficult to recover

It is not stated in the article that the unmanned remote-controlled scraper is used to remove the residual ore. Even if the unmanned remote-controlled scraper is used to remove the ore, there will be a lot of residual ore in the goaf, and the unmanned remote-controlled scraper may be hit by falling ore , abandoned in the goaf; in the second-step mining, when mining the ore pillar, it needs to be excavated in the filling body, which makes the construction difficult and the support cost high

It did not solve the problems of reducing the amount of quasi-acquisition work and the difficulty of excavation and construction in the filling body, and the high cost of support

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