Segmented open field mining method outside the vein

Abstract

The invention discloses a sublevel opening stoping method outside a vein. The sublevel opening stoping method outside the vein comprises the following steps: a, arranging a stope along an orebody trend, dividing levels in stope height, and designing mining preparation engineering in steady surrounding rocks outside an orebody; b, performing the mining preparation engineering, tunneling a sublevel rock drilling drift in the surrounding rocks outside an orebody; c, constructing the orebody in the sublevel rock drilling drift to drill medium-length holes distributed in a sector shape; d, with combination of different phenomena in the orebody and the surrounding rocks in the processes of productive exploration and long and medium hole drilling, carrying out second termination and orebody state investigation of an orebody boundary; e, utilizing medium-length hole slotting; f, sublevel stoping to draw ores; g, repeating the steps c to f; and h, finishing stoping operation. According to the sublevel opening stoping method outside the vein, with adoption of mining preparation outside the vein, medium-length hole controlled blasting slotting and ore drawing and a sublevel dynamic control technology, the orebody can be safely and efficiently mined with low consumption. The sublevel opening stoping method outside the vein is suitable for unsteady or very unsteady orebody and has optimum effect to the orebody with moderately steady or more surrounding rocks and clear mine rock boundary lines.

Description

technical field [0001] The invention relates to the technical field of mining, in particular to an unstable segmented open-field mining method outside the vein of an extremely thin to medium-thick ore body. Background technique [0002] Unstable extremely thin to medium-thick ore bodies, such ore bodies are usually mined by layered caving method and downward filling method at home and abroad. [0003] Due to large wood consumption, high cost, low production efficiency, high labor intensity, and poor operating conditions, the layered caving method has been rarely used in mines at home and abroad. [0004] For the downward approach filling method, according to the mining situation of similar ore bodies, the production capacity is about several tons to 15t / day, and the production efficiency is extremely low. Also complicated. The recovery work is all roadway-type operations, and the ventilation conditions are poor. In the downward filling method, the upper layered filling bo...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a segmented open-field mining method outside the vein to solve the existing mining method for unstable extremely thin to medium-thick ore bodies. The mining process is complex, low in efficiency, high in cost, poor in operating conditions, and labor intensive. High and technical issues where resources cannot be recovered

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