A mechanized mining method of continuous large-diameter deep-hole blasting for thick and large ore bodies

A technology of deep hole blasting, thick and large ore body, applied in the direction of discharge machinery, ground mining, mining equipment, etc., can solve the problems of destroying the technical conditions of mining, unable to recover resources, difficult to deal with empty areas, etc., to protect the technical conditions of mining. , The social and environmental significance is obvious, the effect of ensuring the production capacity of the mine

Active Publication Date: 2021-10-26
CENT SOUTH UNIV +1
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems existing in the prior art, such as the difficulties in pillar recovery and empty space treatment in the traditional open-field method, and the failure of the hanging wall wall rock in the traditional caving mining method to destroy the low-grade ore in the hanging wall. Problems such as the inability to recover resources caused by the technical conditions of body mining

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  • A mechanized mining method of continuous large-diameter deep-hole blasting for thick and large ore bodies
  • A mechanized mining method of continuous large-diameter deep-hole blasting for thick and large ore bodies
  • A mechanized mining method of continuous large-diameter deep-hole blasting for thick and large ore bodies

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Embodiment

[0028] Taking the copper-iron mine in a certain area of ​​Yunnan as an example, the ore body of the copper-iron mine has an average dip angle of 65 degrees, and the ore bed is relatively thick, with an average of about 50-80m. rock or dolomite. The original dolomite rock is relatively hard, compact, and brittle, and the ore body and stability are better. See attached Figure 1-4 show figure 1 A-A sectional view, corresponding to the attached figure 2 As shown in A-A shown in / 4, the specific steps are as follows:

[0029] Step 1. Divide ore blocks:

[0030] The ore body is divided into ore body 13 perpendicular to the ore body trend, the height of the ore block is 50-60m, the width of the ore block is 30m; the layer height is 10-15m.

[0031] Step 2. Accurate cutting:

[0032] The mining project starts construction from the middle section transportation entryway 16, and excavates the ore outlet connecting entryway 2, the central vein-piercing entryway 5 and the ore deli...

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Abstract

The invention discloses a continuous large-diameter deep-hole blasting mechanized mining method for thick and large ore bodies, which belongs to the technical field of underground mining. step. The present invention adopts the method of staggered arrangement of mine exit routes, reduces the exposed area of ​​the roadway, increases the stability of the mine seam roadway, and improves the safety of the bottom structure. It not only has the advantages of high safety performance of the route type mining, but also has a high degree of mechanization of the mining process. , Large production capacity and other advantages, adopting this method to mine thick and large ore bodies has low mining cost, fewer operators, centralized production, easy management, large production capacity and high labor productivity.

Description

technical field [0001] The invention belongs to the technical field of underground mining, and in particular relates to a mechanized mining method for thick and large ore body continuous large-aperture deep-hole blasting. Background technique [0002] In a polymetallic mine in western my country, the length of the ore body is 500-1000m, the width is 200-500m, and the thickness is about 50m. Hydrostatic pressure and other unfavorable engineering geological problems are relatively simple, and the mining technical conditions are relatively good. The production capacity of traditional mining methods is low, and the rate of loss and dilution is high. The invention provides a continuous large-diameter deep-hole blasting mechanized mining method for thick and large ore bodies to solve the problems of low recovery rate and mining efficiency in the traditional open-field method, and aims to enrich the mechanized mining methods for thick and large ore bodies in my country. Contents ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C37/00E21C41/22E21F15/00E21F17/00
CPCE21C37/00E21C41/22E21F15/00E21F17/00
Inventor 雍伟勋曹平张向阳王夙王凯魏军牛经明林奇斌赵庆雄刘文连眭素刚
Owner CENT SOUTH UNIV
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