Noble metal mine pillar recovery method and timbering framework
A precious metal and ore pillar technology, applied in ground mining, mining equipment, earthwork drilling, etc., can solve the problems of underutilization of resources and ore loss, reduce the ore loss rate, solve the mine resource crisis, and achieve sustainable development. The effect of continuous development
Inactive Publication Date: 2015-04-22
招金矿业股份有限公司夏甸金矿
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Problems solved by technology
[0002] In the precious metal mining enterprises, limited by the level of mining technology in the early stage of mine construction, a large number of ore pillars were left during the mining process to maintain the stability of the stope. This part of the ore pillars were not recovered in time, resulting in serious ore losses and limited resources. Full use
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Embodiment 1
[0027] A support structure, including: use logs 2 as vertical braces on the two sides of the approach, planks 1 and logs 2 as horizontal braces to fill the roof, and fix the connection between the horizontal braces and the vertical braces with metal diagonal braces 3 to form a complete The supporting structure of the force-bearing body.
[0028] Using the support structure described above to carry out mining of pillars in precious metal mines, the steps are as follows:
[0029] (1) including a plurality of leftover stope isolation pillars and goafs around the isolation pillars, filling the goafs around the isolation pillars to be mined, and the filling materials used include whole tailings sand or waste rock;
[0030] (2) Plan the area to be returned to the mining area, and select the position of the main approach as the connecting road for mining; the construction of the main approach is carried out to the tailing sand filling place of the vein roadway, and the log scaffoldi...
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The invention belongs to the technical field of underground exploitation of metal mines and particularly relates to a noble metal mine pillar recovery method and a timbering framework. After a goaf in a pillar support stability influence range is pretreated by filling, recovery is performed by adopting a small-section and overall-section support upward drift-fill method according to the shape characteristics of a retained mine pillar; self-stabilization can be realized by fully utilizing self-stability of mine rock; meanwhile, timbering is realized by adopting a small-section and overall-section timbering method; safety influences caused by adjacent mined fields to pillar recovery can be effectively weakened; high safety coefficient is realized; a local fan is used for ventilation, and a good ventilation effect is achieved. The method disclosed by the invention has the advantages of realizing safe exploitation of retained mine pillars, reducing the loss rate of ores, effectively solving the mine resource crisis, fully recycling limited mine resources and realizing continuous development of the mines.
Description
technical field [0001] The invention belongs to the technical field of underground mining of metal mines, and in particular relates to a pillar recovery method and support structure of precious metal mines. Background technique [0002] In the precious metal mining enterprises, limited by the level of mining technology in the early stage of mine construction, a large number of ore pillars were left during the mining process to maintain the stability of the stope. This part of the ore pillars were not recovered in time, resulting in serious ore losses and limited resources. Full use. Contents of the invention [0003] The present invention aims at the deficiencies in the above-mentioned prior art, and provides a pillar recovery method and support structure in precious metal mines. [0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: comprising a plurality of leftover stope isolation pillars and a goaf locat...
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IPC IPC(8): E21C41/22E21D11/00
CPCE21C41/22E21D11/02
Inventor 贾汉义王金波周东良王祯赵金刚宝海忠刘京超曹英莉何少博
Owner 招金矿业股份有限公司夏甸金矿