Efficient ore removal method for gently inclined thin ore body

Abstract

The invention provides an efficient ore removal method for a gently inclined thin ore body, which comprises the following steps of: taking two separated stopes as synchronous stoping units, and adopting retreating mining; an electric scraper bucket in the uphill roadway on one side is pulled by an electric scraper wire of the electric scraper winch to move upwards to an ore falling point of the stope; the rotating direction of the scraper winch is changed, the scraper bucket rakes out the ore downwards, and meanwhile, the scraper bucket in the uphill roadway on the other side passively moves upwards to the ore falling point of the stope; and then the rotating direction of the scraper winch is changed again, so that the scraper bucket on the side rakes out the ore downwards. A single chamber and a single scraper winch are arranged to serve double-scraper-bucket combined ore removal of the double stopes, the scraper winches are circularly turned to achieve alternate ore raking and ore removal of the electric scraper buckets on the two sides, the ore removal efficiency in a panel is doubled, and the investment of the scraper winches and the chambers is doubled; the mining cost is reduced while mining and ore removal are improved, good economic benefits are achieved, and good practical application value is achieved.

Description

technical field [0001] The invention relates to the technical field of mining, in particular to an efficient mining method for gently inclined thin ore bodies. Background technique [0002] The mining of sloping-slightly sloping thin veins has always been a difficult problem in the mining industry. Over the years, a large number of engineers and technicians have been continuously exploring and researching. Although progress has been made to a certain extent, it is still not completely effective. technical difficulties. The investigation and statistics of the mining methods of similar inclination-gentle inclination at home and abroad and the corresponding main technical and economic indicators are carried out respectively. Variations of the scheme, in which the room-and-pillar method and the comprehensive method are the main ones. Due to the limitation of mining technical conditions such as the ore body occurrence, the caving ore cannot be completely discharged at the botto...

AI Technical Summary

Problems solved by technology

Since the climbing ability of the rail transport equipment is greatly limited, especially the operation space of the thin ore body is seriously insufficient, it is impossible to operate the ore extraction activities in the gently inclined thin ore body

Under the current circumstances, the efficiency of using rock loaders is not high, and the transportation distance is short, and the maneuverability is not high; while the underground vehicles have relatively high requirements on the scale of the mine and the tunnel engineering; therefore, the use of scrapers is to promote mine efficiency It is an important part of mining, and the climbing ability and effective distance of the scraper are limited. Only when the climbing angle is less than or equal to 12° and the distance is within 100m can the efficiency of the scraper be maximized; when the inclination angle When it reaches 15°~25°, arranging the LHD transport roadway directly along the inclined direction will increase the climbing angle of the LHD, reducing its operating efficiency and making the equipment unable to operate.

Under such circumstances, the use of electric rakes to extract ore is an important choice, but the ore extraction efficiency of the traditional single electric rake serving a single stope is very low, which greatly limits the production capacity of the mine

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