Mining method of open-pit mine

Abstract

The invention relates to a mining method of an open-pit mine. The mining method includes that a mine body in a final boundary range is divided into a plurality of strips along an advancing direction of a stope working slope, and mining is performed strip by strip; only a safety platform and a sweeping platform are arranged in an advancing direction of a vertical working slope; only two strips are operated constantly in the process of advancing of the working slope, mining operation is performed in a former strip, and stripping operation is performed in a later strip; after mining and digging of the former strip of the mine body are completed, stripping work of the later strip is finished just then, stripping equipment turns to a next strip for stripping, and so on. By the mining method, slope angle of the working slope is increased, stripping peak at the early stage of mine production is reduced effectively, equipment waste caused by changing of production stripping-mining ratio is avoided, the production stripping-mining ratio is balanced, stability of mine production is guaranteed, and good economic benefit is realized.

Description

technical field [0001] The invention belongs to the technical field of mining, and in particular relates to a mining method of an open-pit mine. Background technique [0002] In the process of open-pit mining, it is often divided into several mining zones along the direction parallel to the steps. In order to meet the operation requirements of mining and transportation equipment, the working flat plate needs to have a certain width, which causes the working slope angle to slow down, and the stripping during the infrastructure construction period. The amount is large, the stripping ratio during the normal production period of the mine drops sharply, and the initial equipment investment is high. If the slope angle of the working slope is too small, it will cause waste of initial investment and low economic benefits of the entire mine. Contents of the invention [0003] Aiming at the problems existing in the above-mentioned prior art, the present invention provides an open-p...

AI Technical Summary

Problems solved by technology

[0002] In the process of open-pit mining, it is often divided into several mining belts along the direction parallel to the steps. In order to meet the operating requirements of mining and transportation equipment, the working flat plate needs to have a certain width, which causes the working slope angle to slow down, and stripping during the infrastructure construction period. Large amount, the stripping ratio during the normal production period of the mine drops sharply, and the initial equipment investment is high

The angle of the working slope is too small, resulting in a waste of initial investment and a low economic benefit of the entire mine

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