A mining method for stage-by-stage continuous discharge and filling

Abstract

The invention discloses a stage continuous ore-drawing and filling mining method. The stage continuous ore-drawing and filling mining method comprises the steps that an ore body is divided into stagestopes, each of the stage stopes is divided into section stopes, and a section drilling and blasting project and a section filling project are arranged in each of the section stopes; a drawhole, a vein-penetrating ore-receiving roadway and an out-of-vein ore-drawing roadway are arranged at the bottom of each of the stage stopes, and continuous ore-drawing machines are separately arranged in the vein-penetrating ore-receiving roadway and the out-of-vein ore-drawing roadway, and ore is discharged from the drawhole and continuously discharged through the continuous ore-drawing machines; and whenone or more section dead zones are formed during the ore-drawing of the stage stopes, the ore-drawing is suspended, the section dead zones are filled and maintained to the required strength, and a next cycle of the ore-drawing and filling is carried out until back production and filling of the stage stopes are finished. The structures for the ore-drawing, ore-receiving and ore removal are arrangedat the bottom portions of the stage stopes, the continuous ore-drawing machines are used for the continuous ore removal at the bottoms of stages, and the advantages of large structural dimension parameter of the stopes, relative small mining cross work amount, high efficiency of extraction ore breaking, continuous operation process and high ore-drawing efficiency are achieved.

Description

technical field [0001] The invention relates to an underground mining method for metal ore, in particular to a mining method for staged continuous mining and filling. Background technique [0002] As a main and existing high-efficiency filling mining method, the stage filling mining method combines the advantages of simple mining process, high ore dropping efficiency and low production cost of the open-stop mining method in the aspect of stope filling. It combines the advantages of one-time filling in the stope and high filling efficiency. Therefore, this method is widely used in inclined or steeply inclined ore bodies with thick thick rocks and good rock stability. [0003] With the rapid development of science and technology, the large-scale, automation and intelligentization of underground operation equipment promotes the continuous improvement of mining technology. The stage filling mining method currently adopted by mines has to be improved in terms of stope structure s...

AI Technical Summary

Problems solved by technology

[0003] With the rapid development of science and technology, the large-scale, automation and intelligentization of underground operation equipment promotes the continuous improvement of mining technology. The stage filling mining method currently adopted by mines has to be improved in terms of stope structure size, ore falling efficiency and ore output efficiency. The improvement is reflected in the small height of the stage, the large amount of exploration and mining projects, and the low efficiency of mining, especially the discontinuous operation process, which seriously restricts the development and application of intelligent mining.

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