Auger mining machine-based continuous mining method for gently inclined ultra-thin soft vein rock ore

Abstract

The invention discloses an auger mining machine-based continuous mining method for gently inclined ultra-thin soft vein rock ore. The method comprises: dividing ore into stages along a tendency direction, dividing the ore into panels along a forming direction, dividing the ore into ore pieces along a forming direction, arranging a zone ore pillar between each adjacent panels, arranging stage haulageways in the vein along the ore forming direction, reserving a top pillar at the top of the ore, carrying out tunneling and stopping in the center of the ore along the tendency direction up to the mountain through anchor bolt support, feeding an auger mining machine into the stage haulageways, carrying out stopping up to the mountain, carrying out synchronous drawing-back in left and right sidesfrom the top pillar of the ore from top to bottom, supporting the top plate through hydraulic props, carrying out forced ventilation on the work surface through a local fan, pressing the stock heap with waste air, repeating the above process so that ultra-thin ore is obtained, discharging the ore through a carry-scraper, after the whole ore block is subjected to stopping, removing the hydraulic props and carrying out forced caving to control ground pressure through top plate gravity. The method has a low ore dilution rate, high mining efficiency and safety, and a low construction cost.

Description

technical field [0001] The invention belongs to the technical field of mining, and in particular relates to a continuous mining method of an auger mining machine for soft rock ore bodies with gently inclined and extremely thin veins, and is especially suitable for the mining of soft rock ore bodies with gently inclined and extremely thin veins of coal-measure bauxite . Background technique [0002] Gently inclined ultra-thin ore bodies are one of the main occurrence forms of non-coal mines in my country. Restricted by the thickness and inclination of the ore body, it is difficult to transport the ore in the stope, it is difficult to recover, the roof is difficult to manage, and the safety is poor. [0003] The traditional drilling and blasting mining method is difficult to overcome the above defects, and has many defects such as large derivative damage, poor operation safety, discontinuous process, low production efficiency, low energy utilization rate, high cost, many proc...

AI Technical Summary

Problems solved by technology

Restricted by the thickness and inclination of the ore body, it is difficult to transport the ore in the stope, it is difficult to recover, the roof is difficult to manage, and the safety is poor

[0003] The traditional drilling and blasting mining method is difficult to overcome the above defects, and there are many defects such as large derivative damage, poor operation safety, discontinuous process, low production efficiency, low energy utilization rate, high cost, many processes, and complex construction organization.

Other types of wall caving methods, room-and-pillar methods, and comprehensive methods also have many problems. For example, various wall caving methods have complex mining procedures, low work efficiency, high material consumption, large floor rock mining and cutting, and high mining costs. ; while the ore recovery rate of the room-and-pillar method and the comprehensive method are low, the ore pillar is difficult to recover, the dilution rate is high, and the degree of resource utilization is low

[0004] Therefore, there is still a lack of an effective mining method to realize safe, economical and efficient mining of gently inclined extremely thin ore bodies.

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