Large-scale mining method of gently inclined thin ore body

Abstract

The invention discloses a large-scale mining method of a gently inclined thin ore body. Panels are arranged in the direction along the ore body; interval pillars are arranged between the adjacent panels; bottom pillars are reserved in the panels; 2 to 3 sections are arranged in the panels; interval pillars are reserved between the sections; each section is a mine room; no point pillar is reservedin the mine room; a pedestrian equipment uphill is excavated in the interval pillars; an in-vein segmented haulage roadway is excavated in the direction along the ore body at the bottoms of segments;an in-vein air return roadway is excavated in the direction along the ore body at the tops of the segments; a cutting uphill is excavated at the end part of an ore chamber; a stoping sequence of firstly mining upper segments and then mining lower segments is adopted among the segments; a reverse stoping sequence from one end to the other end is adopted in the segments; blast holes are drilled intothe ore body in the cutting uphill; full-row one-time blasting is performed by using the cutting uphill as a free surface; and roof supporting and goaf caving are started after the accurate mining, cutting and stoping work is completed. According to the method disclosed by the invention, the pedestrian equipment uphill is arranged in the interval pillars, so that the operation safety is high; thewhole segment is blasted in one step; and the stoping efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of metal ore deposit mining, and in particular relates to a large-scale mining method of a gently inclined thin ore body. Background technique [0002] Gently inclined thin ore bodies are a type of ore deposits that are difficult to mine. For this type of ore bodies, various wall caving methods, room-and-pillar methods and comprehensive methods are mainly used. Among them: comprehensive methods and room-and-pillar methods can not only adapt to Various changes in occurrence, but also have high production efficiency, relatively simple mining technology, better panel ventilation conditions and more ideal poverty indicators, and are widely used in gently inclined thin ore body mines. At present, high-grade gently inclined thin ore body resources are gradually exhausted, and a large number of gently inclined thin ore bodies are very sensitive to mining costs. High-efficiency and large-scale mining of gently incli...

AI Technical Summary

Problems solved by technology

At present, high-grade gently inclined thin ore body resources are gradually exhausted, and a large number of gently inclined thin ore bodies are very sensitive to mining costs. High-efficiency and large-scale mining of gently inclined thin ore bodies is the only option to reduce the mining cost of gently inclined thin ore bodies. The disadvantages of low efficiency and small scale of the traditional comprehensive method and room-and-pillar method are gradually becoming prominent, and new methods suitable for high-efficiency and large-scale mining of gently inclined thin ore bodies continue to be sought

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