Filling mining method for downward access part

A filling mining and route technology, which is applied in underground mining, filling, surface mining, etc., can solve the problems of high mining cost and high filling material consumption, and achieve the effect of reducing mining cost, filling cost and filling ratio

Inactive Publication Date: 2016-10-12
CENT SOUTH UNIV
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  • Description
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Problems solved by technology

[0003] The conventional fully cemented filling method can maintain the long-term stability of the stope, but because it consumes a large amount

Method used

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  • Filling mining method for downward access part
  • Filling mining method for downward access part
  • Filling mining method for downward access part

Examples

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Example Embodiment

[0021] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0022] see figure 1 , figure 2 , image 3 and Figure 4 , a mining method for partial filling of the downward approach, comprising the following steps:

[0023] 1) The ore body mining area is vertically divided into interval filling layer 3 and complete filling layer 4, forming stope roof 5, stope floor 6 and stope surrounding rock 7, interval filling layer 3 and complete filling layer 4 are equal Horizontal layered setting with equal layer heights;

[0024] 2) Divide the interval filling layer 3 and the full filling layer 4 into a number of equal-width and alternately distributed first bars 1 and second bars 2, and the width and layer height of the first bar 1 and the second bar 2 equal;

[0025] 3) The mining sequence in the stope area is mining layer by layer downward, in which the adjacent interval filling layer 3 and the complete...

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Abstract

The invention discloses a filling mining method for a downward access part. In the ore body mining process, a mining area is divided into spaced filling layers (3) and full filling layers (4) which are alternatively distributed in the vertical direction; the spaced filling layers (3) and the full filling layers (4) are each divided into a plurality of first strip blocks (1) and second strip blocks (2) which are alternatively distributed; downward access layer-by-layer mining is conducted in the ore body mining process. According to the filling mining method for the downward access part, the purposes of reducing the filling material usage amount in the mining process and reducing the mining cost are achieved on the premise that the stability of a mining field is guaranteed, layered strip block mining is conducted on an ore body, the filling ratio is decreased by reasonably arranging the mining sequence, and then the filling cost is reduced.

Description

technical field [0001] The invention relates to a mining method, in particular to a mining method for partially filling a downward approach. Background technique [0002] When underground mines are mined, with the extraction of underground rock mass and ore, it often causes surface subsidence or subsidence to varying degrees, causing serious damage to the geological environment of the mining area and the surface ecology. In recent years, with the country's emphasis on environmental protection and land use, it has become an inevitable trend in the development of mining technology to replace other mining methods to mine underground ore with the filling method. The advantages of the filling method are strong adaptability, high recovery rate of mineral resources, low dilution rate, safe operation, protection of the ground surface, and secondary use of industrial waste. Since the strength of cemented filling body can be controlled artificially, a reasonable filling strength can ...

Claims

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Application Information

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IPC IPC(8): E21C41/16E21F15/00
CPCE21C41/16E21F15/00
Inventor 曹平范文臣蒲成志唐国栋
Owner CENT SOUTH UNIV
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