Gentle dip medium-thick ore body safety and low-cost combined segmented mining method

Abstract

The invention discloses a gentle dip medium-thick ore body safety and low-cost combined segmented mining method. Lower segmented stopes (2) and upper segmented stopes (3) are alternately arranged in the ore body vertical direction at each interval of 10-15 m, one recovery unit (1) is formed through combination of each lower segmented stope (2) and the corresponding upper segmented stope (3), and studs (4) are scratched at the end portions of the recovery units (1). In each lower segmented stope (2), a cutting groove is formed with a cutting open yard (10) as the free face, and ore falls into atrench (9). A shoveling and conveying machine is utilized for conducting ore loading in an ore loading access road (8), carries the ore into an ore drop shaft (11) through an ore discharging roadway(7) and then lowers the ore into a conveying roadway (12) for car loading and conveying-out. According to the gentle dip medium-thick ore body safety and low-cost combined segmented mining method, every two segmented stopes are gathered into one recovery unit for exploitation, the ore discharging roadway, the ore drop shaft, a slope ramp linking way and other projects are commonly used, the stopepreparation cost is reduced, the preparing time for the stope preparation work is saved, and the exploitation efficiency is improved. Exploited waste stone can be machined into building materials to be sold, and the stockpiling space is additionally arranged for tailing filling.

Description

technical field [0001] The invention belongs to the technical field of underground mine mining, and in particular relates to a mining method of a gently inclined medium-thick ore body, which can be widely used in underground mining of black, colored, chemical and other non-coal solid mines. Background technique [0002] Gently inclined medium-thick ore bodies are ore bodies with a dip angle of 5° to 30° and a thickness of 4 to 15m. Due to its inherent mining technical conditions, it has always been regarded as a difficult ore body. Due to the small inclination angle of the ore body, it is very unsafe to use transportation equipment to enter the stope to extract the ore, or excavate the bottom structure of the footwall to load the ore, because the thickness of the ore body is relatively small, resulting in a large amount of mining and cutting work and high mining costs. [0003] Most mines at home and abroad still use the room-and-pillar method or the open-field method of fo...

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Problems solved by technology

[0008] The purpose of the present invention is to provide a safe and low-cost combined segmental mining method for gently inclined medium-thick ore bodies in view of the problems of unsafe operation, large ore loss, large mining-to-cut ratio, and mining costs in the prior art.

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