Super-large-scale stope large-diameter deep-hole high-stage open stope subsequent filling mining method and application

Abstract

The invention discloses a super-large-scale stope large-diameter deep-hole high-stage open stope subsequent filling mining method and application. The method comprises the following steps: (1) a stoping scheme: ore blocks are arranged perpendicular to the trend of an ore body, the ore blocks are divided into ore chambers and ore columns, the ore chambers and the ore columns are arranged at intervals, a stope is divided into two middle sections by adopting double-middle-section continuous stoping, and a stoping method of middle-section rock drilling, double-middle-section continuous ore breaking ground, bottom ore removal structure sharing and subsequent first filling is adopted; (2) stope preparations; (3) courtyard cutting; (4) rock drilling and blasting; (5) ore removal; and (6) filling.The method has the beneficial effects that the super-large-scale stope has the advantages of being small in stope cutting work amount, large in stope ore quantity and the like; the stope is divided into two middle sections for rock drilling, the technical difficulty of deep-hole rock drilling of the stope is reduced, and the rock drilling efficiency of the stope is improved; the double-middle-section continuous ore breaking ground is adopted, and the bottom ore removal structure is shared, and the method has the advantages that the production capacity of a single stope is improved, the miningand cutting cost is reduced, the stoping efficiency is improved, and the like.

Description

technical field [0001] The invention relates to the technical field of mining methods, in particular to an ultra-large-scale stope mining method with large-diameter deep holes and high-stage empty stops followed by filling. Background technique [0002] With the continuous increase of mining intensity, some deposits with good geological conditions and high ore grade have already been mined, and mining has gradually shifted from the surface to the deep, and deep mining is facing problems such as high ground stress and high ground temperature. With the continuous improvement of mineral processing technology, some ores with lower grades gradually have mining value. In the initial stage of production, new mines are often faced with problems such as tight excavation replacement and insufficient reserves for mining. Especially for large-scale modern new mines with deep deposits, low ore grades, and rich resources, the safety of deep mining must be considered in the mining design o...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is the difficulty of ground pressure control, high production cost, resource shortage, etc., which are faced by existing new large-scale mines in the early stage of production, such as the tension of excavation and replacement, insufficient amount of ready mining, and the mining work under specific conditions such as deep wells and low grades. The recovery rate is low, so a large-diameter, deep-hole, high-stage empty stop and subsequent filling mining method and its application are provided for this purpose.

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