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Mining technology for inclined orebodies in opencast mines

A technology of ore body and technology, which is applied in the field of mining technology of inclined ore bodies in open-pit mines, can solve the problems of waste of ore resources, raw ore grade, indiscriminate ore and surrounding rock waste rock, and surrounding rock mixed into ore, so as to reduce ore dilution The effect of improving efficiency, improving work efficiency, and smooth production operations

Inactive Publication Date: 2012-07-11
江西分宜珠江矿业有限公司
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Problems solved by technology

[0002] In the prior art, there are the following problems in the mining operation process of mining enterprises: adopt straight blast holes, that is, drill holes in a direction perpendicular to the inclination of the ore body; operate simultaneously from both ends of the ore body in order to improve productivity; Rock drilling and blasting at the working face without distinction between ore and surrounding rock waste
Therefore, according to the mining process of the prior art, the loss of ore and the situation that surrounding rocks are mixed into the ore usually occur, thereby causing waste of ore resources and reduction of raw ore grade

Method used

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  • Mining technology for inclined orebodies in opencast mines
  • Mining technology for inclined orebodies in opencast mines
  • Mining technology for inclined orebodies in opencast mines

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Embodiment Construction

[0014] Such as Figure 1-2 As shown, the open pit 50 surrounded by the slope line 1 and the terrain line 3 has an A side and a B side. The open pit 50 has a series of inclined orebodies 2 . The present invention alternately processes the stripping operation face 20 and the mining operation face 10 in the manner of mine waste dislocation blasting 100 . figure 1 It means that the surrounding rock on the left side is stripped first 20, and then the ore is mined 10, and the dislocation distance L between the mining and the stripping operation face is not less than 28 meters. figure 2 Indicates the part where the vertical blast hole will increase the ore dilution rate and loss rate; at the same time, it also intuitively reflects the reason why the inclined hole cannot be operated from the A side. Because the operation of less than 90° is "digging" inward, it will directly increase the ore dilution rate and loss rate.

[0015] According to the rock drilling blasthole technical s...

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Abstract

The invention provides a mining technology for inclined orebodies in opencast mines. The mining technology is characterized in that boring is carried out in the inclined direction of an orebody; the sequence of operation is from the outer side of the inclined direction of the orebody to the inner side; dissection and mining are staggered for blasting; and the staggered distance of secondary blasting is larger than or equal to 28 meters to avoid mixed stacking of ore and waste. The mining technology can fully utilize mineral resources, improve ore recovery rate, production efficiency and operation safety degree, and reduce ore dilution rate and production cost.

Description

technical field [0001] The invention relates to a mining process for an inclined ore body in an open-pit mine, which reduces the dilution rate and ore loss rate by means of forward drilling, dislocation blasting and the like during the mining operation process. Background technique [0002] In the prior art, there are the following problems in the mining operation process of mining enterprises: adopt straight blast holes, that is, drill holes in a direction perpendicular to the inclination of the ore body; operate simultaneously from both ends of the ore body in order to improve productivity; Rock drilling and blasting is carried out at the working face without distinction between ore and surrounding rock waste. Therefore, according to the mining process of the prior art, the loss of ore and the situation that surrounding rocks are mixed into the ore usually occur, thereby causing waste of ore resources and reduction of raw ore grade. Contents of the invention [0003] Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C47/10
Inventor 胡细荣
Owner 江西分宜珠江矿业有限公司
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