Subsequent filling method in medium and deep hole raise mining

Abstract

The invention discloses a medium-length hole raise mining subsequent filling method. Ore blocks are arranged in the ore body direction, and divided into stages in the vertical height. The two ends of the ore blocks are provided with mining preparation raises. The bottoms of the ore blocks are provided with a flat bottom ore removal structure. The upper portions of the ore blocks are provided with a raise boring machine chamber. A raise boring machine is adopted for drilling mining preparation raises; a raise boring machine lifting system is adopted for lifting and drilling rock and exploding a working platform, a down-the-hole drill drills horizontal parallel or annular medium-length hole blast holes from the two sides of the raise, and concentrated rock drilling, split blasting, concentrated ore removal and subsequent filling are carried out. The method is mainly applicable to heavy pitch thin and medium thickness ore bodies, the problems of a shrinkage method, a sublevel open stop mining method or a cut-and-fill mining method are solved, and the method has the advantages that the mining and cutting work amount is small, the stope mechanical operation degree is high, production efficiency is high, production capacity is large, workers do not need to enter a stope for work, and safety conditions are good.

Description

technical field [0001] The invention belongs to the field of mining, and in particular relates to a method for filling after medium and deep hole raise mining. Background technique [0002] For steeply inclined thin ore bodies to medium-thick ore bodies, the ore retention method, segmented open field method or upward layered filling method are commonly used for mining. Among them, the mine-retaining method has a large stope exposure area, low degree of mechanization, high labor intensity, and unsafe operation; the segmented open field method has disadvantages such as a large cutting ratio and a high rate of ore loss and dilution in the stope; according to layered filling During the mining method, due to the many operation cycles and the complex mining process, the production efficiency is low, the labor intensity is high, the mining cost is high, and the mine production capacity is small. Moreover, the above-mentioned mining methods all need to excavate a quasi-raised shaft...

AI Technical Summary

Problems solved by technology

Among them, the mine-retaining method has a large stope exposed area, low degree of mechanization, high labor intensity, and unsafe operation; the segmented open-field method has shortcomings such as a large mining-cutting ratio and a high rate of ore loss and dilution in the stope; according to layered filling In the mining method, due to the many operation cycles and the complex mining process, the production efficiency is low, the labor intensity is high, the mining cost is high, and the mine production capacity is small.

Moreover, the above-mentioned mining methods all need to excavate a quasi-raised well, but the traditional method of digging a quasi-raised well has slow driving speed, low work efficiency and poor safety.

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