A kind of continuous mining method of auger mining machine for gently inclined extremely thin vein soft rock ore body

Abstract

The invention discloses an auger mining machine continuous mining method for soft rock ore bodies with gently inclined extremely thin veins. Interval ore pillars are reserved between the panel and the panel; stage transportation roadways are arranged along the ore body in the ore vein, the top pillar is reserved on the top of the ore block, and the mining is carried out in the center of the ore block along the inclination to go up the mountain, and the back mining up the mountain is supported by bolts; The drilling and mining machine enters the back mining from the stage transportation roadway, starting from the position of the top pillar of the ore block, from top to bottom, the left and right sides are retreated at the same time, and the roof is supported by hydraulic props. The wind presses towards the ore pile, and this is repeated, and the extremely thin ore body is continuously mined, and the ore is discharged through the scraper. When the entire ore block is mined, the hydraulic prop is removed, and the ground pressure is controlled by the gravity of the roof. The invention has low ore dilution rate, high mining efficiency and safety, and 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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