An Improved Mining Method for Segmented Mine

Abstract

The invention relates to an improved section mining method, which belongs to the field of underground mining. In the present invention, each ore block is provided with an ore room and an ore pillar, and the ore room is arranged vertically to the direction of the ore body. The mine room adopts a small-span, high-section arrangement, and adopts an ore-outlet structure at the bottom of the stope with an ore-loading roadway and an ore-out roadway. The loader excavates the ore in the ore loading roadway. The present invention solves the problem that the traditional sectioned mine method is used for thick ore bodies, the layout span of the mine room along the direction is large, the stope stability is poor, and the mining intensity is high, and multi-section simultaneous mining can be realized by controlling the span of the mine house; The bottom structure facilitates the mining efficiency of the LHD and improves labor productivity. It is suitable for the mining of non-coal mines with slopes, steep slopes, moderately stable ore bodies with a thickness greater than 20 meters.

Description

technical field [0001] The present invention relates to an improved mining method for subsection mines, in particular to an underground mining method, which belongs to the technical field of underground mining. Background technique [0002] The segmented open-stop mining method is an efficient mining method for medium-thickness and above-medium-thickness inclined and steeply inclined ore bodies with stable to moderately stable ore rocks. It has outstanding advantages such as high mining intensity, high labor productivity, good ventilation conditions, and simple management. It has been widely used in mines at home and abroad. The segmented mining room method is based on the division of stages, and then divides the stages into segments, and each segment forms an independent mining and ventilation system. In the traditional segmented mining method, the mines are arranged along the strike, and time columns are left at intervals in the segments to divide them into several ore bl...

AI Technical Summary

Problems solved by technology

Its disadvantage is that the mine houses are arranged along the strike, which is only suitable for ore bodies with a thickness of less than 20m. For ore bodies with a thickness of more than 20m, there are large horizontal spans of mine houses, large exposed areas of stopes, and poor stability of surrounding rocks and top pillars on the hanging wall. , large ore loss and dilution, poor safety conditions and other issues; using electric rakes to extract ore, the layout of electric rakes is difficult to adapt to the changing situation of the footwall of the ore body, the amount of mining work is large, and the dilution rate will be increased once , Outdated equipment, low degree of mechanization, low labor production efficiency and other issues

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