Mining method applicable to recovery of gentle-inclined/inclined thin ore body

Abstract

The invention discloses a mining method applicable to recovery of a gentle-inclined / inclined thin ore body. A pulse outside transport drift and an ore roadway, which are orderly communicated are tunneled on a bottom plate of an ore body; a cutting roadway is tunneled inside the ore body along the trend of the ore body; a chamber and a jamb are not divided in a stope; back work is carried out from a free surface formed at the intersection of a cutting uphill and a cutting roadway along the trend of the ore body; blasting ore is harrowed to the inside of the cutting roadway by using a scraper, and then the ore is unloaded to a transport cart through a scraper loader arranged inside the cutting roadway as an ore removal tool; and the transport cart ships out the ore through the ore roadway and the pulse outside transport drift. By adopting the method, the bottom structure of the stope is simpler, the work amount and the support amount of roadway construction are greatly reduced, the mining and cutting ratio is reduced, the stability of the bottom structure is improved, the mining cost and the preparation time are saved, the mining potential safety hazard is reduced, the recovery safety is improved, ore removal and ore transportation are carried out on the bottom plate of the ore body, and the ore production efficiency is improved.

Description

technical field [0001] The invention relates to a mining method, in particular to an open-field mining method for gently sloping / inclined thin ore body mining. Background technique [0002] The bottom structure of the ore block is an important part of the mining method, which has a significant impact on the technical indicators of the mining method and the safety of the mining work. According to statistics, the amount of labor used to form the bottom structure of the mine stope accounts for about 30% of the labor amount of the entire stope. Therefore, according to the specific conditions of the mine, it is the key to the mining method to study and design a reasonable structure of the bottom of the stope. content. [0003] At present, the bottom structure of the open-field mining method mainly uses the bottom structure of the chute ore drawing. One stope is arranged with a pedestrian ventilation patio, which is connected with the out-of-vein transportation level through ...

AI Technical Summary

Problems solved by technology

The above-mentioned traditional bottom structure has a large amount of engineering work, which is very destructive to the transportation roadway outside the vein, affects the stability of the transportation roadway outside the vein, and also increases the amount of support

Many problems have arisen in the application of the traditional bottom structure of the ore-drawing shaft, such as the use of electric rakes, which has low raking efficiency; the use of pedestrian ventilation patios for pedestrians, and the ore-drawing of the chute. These projects need to be dug up during the construction process, which is very difficult , high risk; a large amount of wood is used in the ore drawing funnel, and there are great safety hazards in the use process

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