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A kind of room-pillar mining method of artificial waste stone ore pillar in gently inclined ore body

A technology of gentle inclination and mining method, applied in ground mining, mining equipment, underground mining, etc., can solve problems such as difficulty in roofing, low ore recovery rate, loss of mosaic, etc., to reduce lifting transportation costs, improve ore recovery rate, The effect of reducing the loss of dilution

Active Publication Date: 2022-06-24
CENT SOUTH UNIV
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Problems solved by technology

The existing artificial pillars are mainly made of bricks or waste rocks. The construction method is complex, difficult to apply, low in strength, high in comprehensive cost, and difficult to connect to the top.
At the same time, leaving a large number of ore pillars leads to low ore recovery rate and serious loss of mosaic, which seriously restricts the safe production capacity and economic benefits of the mine

Method used

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  • A kind of room-pillar mining method of artificial waste stone ore pillar in gently inclined ore body
  • A kind of room-pillar mining method of artificial waste stone ore pillar in gently inclined ore body
  • A kind of room-pillar mining method of artificial waste stone ore pillar in gently inclined ore body

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Embodiment Construction

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, All other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

[0027] see Figure 1-Figure 4 , a kind of artificial waste rock ore pillar room and pillar mining method of a gently inclined ore body in the figure is the preferred solution of the present invention, and the use of the technical solution provided by the present invention to recover the gently inclined ore body includes the following steps:

[0028] (1) Divide the ore body into panels along the strike, and divide the panel into one-step strips 24 and two-step strips 25 by cutting uphil...

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Abstract

The invention discloses an artificial waste stone ore pillar room pillar mining method of a gently inclined ore body. The ore body is divided into panels along the trend, and the ore body is divided into strips by cutting uphill in the panel area and mined in two steps. When the first-step strip is mined, the artificial waste rock pillars are constructed according to the designed spacing along with the advancement of the working face, and then the adjacent second-step strips are mined. , the artificial waste rock pillars built during the two-step strip mining are located at the triangular apex of the two artificial waste rock pillars in the adjacent strip. After the strip mining in the panel area, the artificial waste rock pillars in the panel are distributed in a diamond shape . The invention has the advantages of safe operation and low dilution loss, and at the same time can consume and process part of excavated waste rocks, reduce waste rocks out of holes, and reduce overall costs.

Description

technical field [0001] The invention belongs to the technical field of mining, and in particular relates to a room-and-pillar mining method for artificial waste rock pillars of gently inclined ore bodies. Background technique [0002] Some metal and non-metallic ores in our country are of high value. The main ore body of the mine is a gently inclined ore body. The main methods of mining this ore body are the room-and-pillar method, the caving method and the strip mining followed by the filling mining method. Among them, strip mining followed by filling mining method has the lowest loss and dilution rate. However, most mines often use room-and-pillar mining due to incomplete filling systems and insufficient filling materials. In order to control the ground pressure activities and ensure the safety of mining operations when mining high-grade ore by the room-and-pillar method, a large number of ore pillars are often left in the stope, which will lead to a large amount of ore lo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/22E21D11/10E21D21/00
CPCE21C41/22E21D11/10E21D21/0026
Inventor 胡建华周坦马少维温观平曾平平向睿
Owner CENT SOUTH UNIV
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