Method for stoping of stocked ore in stope by adopting sublevel stoping method

Abstract

The invention relates to a method for stoping of stocked ore in a stope by adopting a sublevel stoping method, and belongs to the technical field of mining engineering. The method comprises the following steps: first of all, carrying out construction from an outside-vein tunnel or an in-pillar tunnel in a mining area, and downward constructing a ramp till the horizontal height of stocked ore stoping; then, constructing a new in-pillar drift, and constructing a plurality of new ore-drawing tunnels from the new in-pillar drift till the lower part of an original rock-drilling tunnel in the direction perpendicular to the original rock-drilling tunnel; and drilling blast holes in the tops of the new ore-drawing tunnels in correspondence to the original rock-drilling tunnel, and then carrying out charge blasting, breaking through a goaf to form an ore-drawing port, drawing ore in the new ore-drawing tunnels, and completing the stoping of the stocked ore in the stope in a retreating ore-breaking manner. By adoption of the method provided by the invention, the stoping of the stocked ore in the deep-hole stope can be achieved, the stoping rate of the stope can be improved, the loss of ore resources can be effectively reduced, the service life of a mine can be prolonged, and the economic benefit of an enterprise can be increased.

Description

technical field [0001] The invention relates to a method for recovering ore stored in a mine house by adopting a stage mine method, and belongs to the technical field of mining engineering. Background technique [0002] At present, due to the advantages of low mining cost, good ventilation conditions, safe operation, and high ore extraction efficiency, the ore recovery method of the stage mine is widely used, but there are also some problems in the mining process of the mine. The bottom line was damaged by deep hole blasting, which enlarged the bottom of the funnel formed after the blasting, and the mining line retreated, reducing the ore that the scraper could dig. The structure is broken, and the roof of the ore-out route falls or the side is reduced, which reduces the ore-out funnel. These problems will cause about 15% of the ore in the mine to be unable to be extracted after the deep hole blasting is completed, forming a hole in the mine, causing permanent loss of ore r...

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Problems solved by technology

[0002] At present, due to the advantages of low mining cost, good ventilation conditions, safe operation, and high ore extraction efficiency, the ore recovery method of the stage mine is widely used, but there are also some problems in the mining process of the mine. The bottom line was damaged by deep hole blasting, which enlarged the bottom of the funnel formed after the blasting, and the mining line retreated, reducing the ore that the scraper could dig. The structure is broken, the roof of the ore exit route falls or the side is reduced, and the ore exit funnel is reduced

These problems will lead to about 15% of the ore in the mine cannot be extracted after the deep hole blasting is completed, forming a hole in the mine, resulting in permanent loss of ore resources and reducing the recovery rate of the mine.

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