Stope structure arrangement manner through fast-tilting extremely-thin vein cliff filling stoping method

Abstract

The invention discloses a stope structure arrangement manner through a fast-tilting extremely-thin vein cliff filling stoping method. An undercutting space is evacuated from human-working ventilatingraises on the two sides to the interior of an ore block along the upper boundary of a bottom column (15), a plurality of upward passes are evacuated upwards on the side, close to an upper disc of an ore body, of a middle-section transporting roadway (10) and used as ore chutes, cliff holes (4) are drilled in an upper and lower disc cliff surrounding rock (8), ore blanking holes (9) are drilled inan extremely-thin vein (1), and pre-cracking holes (3) are drilled in the contact surface of the rock; and a waste stone filling body (6) is formed by collapsed upper and lower disc cliff surroundingrock (8), a tailing cementing filling body (5) is formed by using tailing cementing filling, and finally, a mixed filling body of the tailing cementing filling body (5)-waste stone filling body (6)-tailing cementing filling body (5) is formed. By means of the stope structure arrangement manner, the strength of the mixed filling body is improved, the purpose of controlling the deformation of the surrounding rock is achieved, and the tailing cementing filling body (5) is used as an ore blanking platform to avoid the secondary depletion of the ore.

Description

technical field [0001] The invention belongs to the technical field of underground mine mining, and in particular relates to a method for filling and mining thin veins, which is particularly suitable for filling and mining extremely thin veins with an average thickness of 0.5 to 1.2 meters and a dip angle of 65° to 75°. Background technique [0002] The extremely thin ore veins with steep dips have complex occurrence conditions, and are a complex and difficult type of deposit during the development of mineral resources. There are very few mining methods for mining this ore body at present. Data analysis shows that the current domestic mining methods for ultra-thin veins mostly use the comprehensive method, ore-retaining mining method, wall cutting and filling mining method and their deformation schemes, and other mining methods are used less. There is a considerable gap, and the common problems are: low degree of mechanization, high labor intensity, low stope production cap...

AI Technical Summary

Problems solved by technology

Data analysis shows that the current domestic mining methods for ultra-thin veins mostly use the comprehensive method, ore-retaining mining method, wall cutting and filling mining method and their deformation schemes, and other mining methods are used less. There is a considerable gap, and the common problems are: low degree of mechanization, high labor intensity of workers, low stope production capacity, high dilution loss rate, and potential safety hazards, etc.

[0010] (1) The location of the secondary rock drilling operation of the ore lode is located at the boundary of the surrounding rock of the hanging wall or the footwall, resulting in low drilling efficiency, and the blasting effect of the secondary ore fall is poor due to the clamping effect;

[0011] (2) Although the ore body and surrounding rock were blasted in stages, separate mining of the ore and rock was not achieved, resulting in a high ore dilution rate;

[0012] (3) The waste rock is completely used to fill the goaf, and the effect of controlling the deformation of the surrounding rock is poor

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