Approach open stope subsequent filling mining method for gently inclined medium-thick ore body

Abstract

The invention discloses an approach open stope subsequent filling mining method for a gently inclined medium-thick ore body. The approach open stope subsequent filling mining method for the gently inclined medium-thick ore body comprises the following steps that panel layout is carried out, specifically, panel dividing is carried out in the direction of the ore body, and columns are arranged between panels; a plurality of strip-shaped approach stopes are arranged in each panel in the ore body inclination; ore removal roadways are arranged at the bottom layer outside the vein of the ore body inthe ore body inclination, ore removal transverse drifts are arranged at the bottom of ore pillars reserved at the lower ends of the panels, drilling roadways are arranged at the bottoms of the strip-shaped approach stopes in the panels, and the ore removal transverse drifts and drilling roadways separately communicate with the ore removal roadways; filling ventilation connection channels are arranged at the positions, near the upper panel vein of the ore body, of the inner parts of the columns to connect the strip-shaped approach stopes; extraction and ore removal are carried out, specifically, medium-deep hole drilling trolley is used for drilling upward fan-shaped blast holes in the drilling roadways, and centralized charge blasting is carried out; the blasted ore is discharged to a jack shaft through a scraper through the drilling roadways, the ore removal roadways and the ore removal transverse drifts; and filling is carried out, specifically, once the extraction of the strip-shaped approach stopes is completed, one-time filling concentrating is carried out. The approach open stope subsequent filling mining method for the gently inclined medium-thick ore body greatly reduces the amount of mining and cutting work and has high ore removal and transportation efficiency.

Description

technical field [0001] The invention relates to the technical field of mining, in particular to a mining method of a gently inclined medium-thick ore body with an approach emptying and subsequent filling. Background technique [0002] It has always been a technical problem at home and abroad to mine gently inclined medium-thick ore bodies with a dip angle of 15°-35° and a thickness of 10m-30m. Due to the slow inclination of the ore body, the ore cannot be slid out of the mine by itself, and it needs to be transported by machinery or scraped. However, the stope has a high ceiling, difficult to manage the roof, and there are potential safety hazards. [0003] According to statistics, the commonly used methods are room-and-pillar method (accounting for 50%), stratified filling mining method (accounting for 30%) and segmented open field subsequent filling method (accounting for 20%). When the room-and-pillar method is used to mine gently inclined medium-thick ore bodies, becaus...

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Problems solved by technology

When the room-and-pillar method is used to mine gently inclined medium-thick ore bodies, because the inclination angle exceeds the climbing angle of the scraper, it is often necessary to arrange pseudo-sloped mine exit roadways, but this increases the distance of the scraper and reduces its operating efficiency, and generally Rock drilling is arranged in shallow holes, the ore removal efficiency of the scraper is low, the loss rate of the left pillar is high, the stress of the goaf is concentrated in the pillar, and the safety hazard is also relatively large; the layered filling mining method is widely used, Especially for the mining of high-grade ore deposits, but this mining method cannot mine the full thickness of the ore body at one time, and needs to be divided into multiple mining and filling processes, and the operating efficiency is low; The layout of the stope has the disadvantages of large mining and cutting engineering, high dilution rate and loss rate, and its stope structure size is difficult to apply to the deep mining environment, and the mine application effect is poor

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