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Mining method for small-section high-grade ore body

A mining method and high-grade technology, applied in surface mining, underground mining, special mining, etc., can solve problems such as high mining cost, ore body depletion, waste of resources, etc., achieve a high degree of automation, solve depletion, and reduce work intensity effect

Inactive Publication Date: 2021-10-22
牌洪坤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of traditional mining methods not only easily leads to the dilution of the ore body, but also brings certain safety hazards, and the unit mining cost is too high because the section is too small; without mining, it will cause waste of resources

Method used

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  • Mining method for small-section high-grade ore body
  • Mining method for small-section high-grade ore body
  • Mining method for small-section high-grade ore body

Examples

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Embodiment 1

[0027] A mining method for a small-section high-grade ore body, the specific steps are as follows:

[0028] (1) Selected orebodies: Most of the orebodies in a gold mine occur in pyrite-sericites, and part of them occur in pyrite-sericized granites. The ore is dominated by sulfide ore, and the depth of the oxidation zone is very shallow. The mineral composition of the primary ore: the metal minerals are mainly silver-gold ore and pyrite, and the secondary ones are natural gold, arsenopyrite, sphalerite, galena, chalcopyrite, pyrrhotite, limonite, Magnetite, etc.; the main gangue minerals are quartz, sericite, and residual feldspar, followed by carbonate minerals (calcite, dolomite, siderite, etc.). Valuable elements are mainly gold, accompanied by low-grade silver. The average ore grade is 2.0g / t, and the ore grade of some ore bodies is as high as 50g / t. A middle section is set every 40m downhole. A certain ore body occurs in the footwall of the main ore body, with a dip an...

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Abstract

The invention relates to a mining method for a small-section high-grade ore body, and belongs to the technical field of mining. The method comprises the following steps of (1) selecting an ore body; (2) selecting the position of a guide hole; (3) penetrating through a guide hole; and (4) performing cutting. The method is suitable for the small-section ore body wrapped between middle sections, the dilution rate of the extracted ore is effectively reduced, and the safety risk is greatly reduced. The method is safe and efficient, the whole operation process is high in automation degree, the ore body stoping can be rapidly, efficiently and safely carried out, and meanwhile the working intensity is relieved. According to the invention, the cutting surface can be accurately controlled, and the problem of depletion of stoped ore is effectively solved.

Description

technical field [0001] The invention relates to the technical field of mining, in particular to a mining method for small-section high-grade ore bodies. Background technique [0002] In the process of underground ore mining, there are often some ore bodies with smaller sections and higher grades entrained between the upper and lower middle sections, and these ore bodies are difficult to recover. The use of traditional mining methods not only easily leads to the dilution of the ore body, but also brings certain safety hazards, and the unit mining cost is too high because the section is too small; without mining, it will cause waste of resources. Contents of the invention [0003] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a mining method for a small-section high-grade ore body to solve the above-mentioned technical problems. The mining method of the small-section high-grade ore body provided by the present invention is suita...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/22
CPCE21C41/22
Inventor 牌洪坤亓传铎牌珏嘉杨威牌康龙刘凯王海青金呈浩张营
Owner 牌洪坤
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