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Metal ore residue recovery method

A recovery method and technology of metal mines, applied in ground mining, mining equipment, underground mining, etc., can solve problems such as uneven surface subsidence, waste of resources, and surface damage, so as to increase mining rate, ensure effective support, and improve worker operation safety effect

Active Publication Date: 2022-01-11
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The legacy of ore pillars will not only cause a lot of waste of resources, but also cause uneven surface settlement due to the existence of ore pillars, resulting in more serious surface damage

Method used

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  • Metal ore residue recovery method
  • Metal ore residue recovery method
  • Metal ore residue recovery method

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0027] A method for recovering metal ore residual pillars, comprising:

[0028] S1, determine the residual column 10 position (as figure 1 shown), and set up a working face at the set position of the residual column 10, if not restricted by conditions, multiple working faces can be arranged, mainly determined according to the size of the residual column, and the working face can generally be set to 20m Left and right, if the size of the residual column is small, one working face is enough; if there are many residual columns and the size is large, multiple working faces can be arranged, and after m...

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Abstract

The invention provides a method for recovering metal ore residual pillars, comprising: S1, determining the position of the residual pillars in the mining space that has been mined, and setting up a working face at the set position of the residual pillars; S2, At least one cutout is opened on the surface, a hydraulic support is set in the cutout, and the forward direction of the hydraulic support points to the working face; S3, mining, ore is dropped at the working face, and transported to the set location. The method for recovering metal ore residual pillars provided by the present invention can effectively improve the mining rate of metal ore resources by recovering and mining the residual pillars after the room-and-pillar mining is completed, and blast or cut the ore body within the height range of the hydraulic support. The method of directly dropping the ore body outside the height range of the hydraulic support can ensure the effective support of the hydraulic support and improve the safety of workers in the recovery process of residual pillars.

Description

technical field [0001] The invention relates to the field of metal ore mining, in particular to a method for recovering metal ore residual pillars. Background technique [0002] Metal is widely used in many industries such as construction, transportation, electric power, aerospace, military industry, chemical industry, etc. It is the foundation of the survival and development of my country's pillar industries. The development and utilization of metal ore resources are the basic conditions for determining industrial development. At present, the few metal mines in my country (such as bauxite, gold, potash, etc.) all adopt the traditional room-and-pillar mining method. However, after mining, most of the remaining pillars are directly discarded and not mined. The leftover ore pillars will not only cause a lot of waste of resources, but also cause uneven surface settlement due to the existence of ore pillars, resulting in more serious surface damage. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/22E21D23/00E21D23/06E21D23/04E21F13/06E21F15/00F42D3/00
CPCE21C41/22E21D23/0004E21D23/06E21D23/0472E21F13/06E21F15/005F42D3/00
Inventor 何满潮高玉兵高海南
Owner CHINA UNIV OF MINING & TECH (BEIJING)