A thin ore body mechanized high layered continuous mining method

Abstract

The invention discloses a thin ore-body mechanized highly-layering continuous mining method. The method comprises the following steps: (a) a vein division stage: dividing a vein into a plurality of parallelogram ore blocks by utilizing 15 to 20 percent gradient slope ramps along the direction of an ore body; (b) arranging a pedestrian ventilation raise and a filling raise, and pouring an artificial fake bottom; (c) carrying out layering extraction from an undercutting layer of a stope room, and forming a complete in-vein slope ramp; (d) dividing the stope room into a rock drilling working face, an ore production working face and a filling working face, wherein the three working faces are alternately operated in parallel; (e) carrying out layering operation on a stope, wherein the layering operation includes rock drilling, explosive loading, detonation, ventilation, prying, ore discharging, ore powder clearing, arranging of an on-the-way ore chute, filling, stope support and laying of a concrete soleplate; (f) recovering a bottom column after the stope room is extracted. By adopting the method, the slope ramp stope preparation in the vein, fully mechanized operation and highly-layering filling can be realized. The method has the advantages of high mining safety, small mining-cutting ratio, small ore loss and depletion and high production efficiency.

Description

technical field [0001] The invention relates to the mining field, in particular to a thin ore body mechanized high-layer continuous mining method. Background technique [0002] Many non-ferrous metals and gold mines in my country mine mostly thin ore bodies, the scale of the deposits is small, the occurrence of the ore bodies is complex, and the mining is difficult. For a long time, in the mining of steeply inclined thin veins or extremely thin veins, the commonly used methods include wall cutting and filling, shallow hole retention and upward horizontal layered filling mining. [0003] When mining with shallow hole ore retention method, there are problems such as large stope exposure area, long exposure time of upper and lower wall rocks, unsafe operation, high difficulty in mining, high loss and dilution rate of stope ore, low production efficiency, high labor intensity, and mine The production capacity is small, and it is difficult to realize mechanization and other defi...

AI Technical Summary

Problems solved by technology

[0003] When mining with shallow hole ore retention method, there are problems such as large stope exposure area, long exposure time of upper and lower wall rocks, unsafe operation, high difficulty in mining, high loss and dilution rate of stope ore, low production efficiency, high labor intensity, and mine Small production capacity, difficult to achieve mechanization and other shortcomings

In addition, the ore retention method cannot be released in time due to 2 / 3 of the caving ore, which will also cause disadvantages such as a backlog of funds and an unbalanced amount of tertiary ore.

[0004] For steeply inclined thin or extremely thin ore bodies, when adopting the upward horizontal layered filling mining method of the quasi-slope outside the vein, the slopes outside the vein and the contact roads of the stope are numerous and complicated, and the engineering volume of mining and cutting is huge. high cost

[0005] When using the ordinary wall cutting and filling method for mining, due to the limitation of the vein width, it is difficult to realize mechanization in the mining field, there are many operating cycles, and the mining process is complex, so there are large mining ratios, small mine production capacity, low production efficiency, and high labor intensity. , high mining cost and large ore loss and dilution

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