Sublevel shrinkage caving stage open stope afterwards filling mining method

A filling mining method and caving technology, which is applied in ground mining, underground mining, special mining, etc., can solve the problems that the ground surface is not allowed to sink and cannot be used, and achieve the effect of low cost, large production capacity and high equipment level

Inactive Publication Date: 2010-11-10
NORTHEASTERN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This mining method has also been promoted to a certain extent in our country, but it cannot be used in some mines because the surface or the upper ore body needs to be protected, and the surface does not allow subsidence, etc.

Method used

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  • Sublevel shrinkage caving stage open stope afterwards filling mining method
  • Sublevel shrinkage caving stage open stope afterwards filling mining method
  • Sublevel shrinkage caving stage open stope afterwards filling mining method

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Embodiment Construction

[0012] Below in conjunction with accompanying drawing and embodiment describe in detail:

[0013] like figure 1 , figure 2 and image 3 As shown, excavate the footwall transport level roadway (1) at the footwall of the ore body, connect the roadway (3) in sections through the pedestrian ventilation shaft (4), and extend the construction recovery route (5) to reach the ore body hanging wall. Construction of cutting tunnels (8) and cutting patios (9) along the boundary of the hanging wall provides compensation space for ore mining, blasting is carried out sequentially from the hanging wall to the lower wall along the mining route (12), and parallel fan-shaped blastholes (10) are drilled , about 30% of the ore dropped by the explosion is transported out through the segmented roadway (2), and the remaining ore is left in the stope, and finally passes through the cutting ditch (13), the ore-out approach (12), and the ore-out roadway (14) And slip shaft (11) goes out ore.

[00...

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Abstract

The invention discloses a sublevel shrinkage caving stage open afterwards filling mining method. In the earlier stage of stoping, caved ores are utilized to support surrounding rocks on a top tray, and in the later stage of stoping, a goaf area is filled with fillers to control ground pressure so as to achieve safe and efficient mining. Ore blocks are mined in two steps, mining blocks in step two are stoped after the mining blocks in step one are stoped and filled. After the ores are completely let out, the goaf area is filled with the fillers to control the ground pressure. Because the stoping modes of sublevel ore caving, sublevel shrinkage, final ore drawing and empty area afterwards filling are adopted, the mining method has large one-time filling amount and low cost; the method adopts middle-deep hole drilling and blasting and carry scraper ore removal, and the device has high level and large production capacity; the method has the advantages of large production capacity of the sublevel caving method and the stage open stope method, high recovery rate of the filling method, and earth surface protection; the safety is good, and drilling, ore removal and other operations are all carried out in a sublevel drilling and ore removal approach roadway; and the ores can be removed in advance, and the ores can be removed partially after the first sublevel is ready.

Description

technical field [0001] The invention relates to the technical field of metal ore deposit back mining, and in particular provides a mining method combining a caving mining method with segmented ore retention and a stage-by-stage emptying and subsequent filling mining method. Background technique [0002] According to the ground pressure management method during mining, metal deposits are divided into three categories: open-pit mining method, filling mining method and caving mining method. The caving mining method has been widely used in metal mines and non-metal mines because of its low cost, high efficiency and safe operation. But its biggest defect is that the loss rate and dilution rate of ore are high, resulting in a large waste of mineral resources. The root cause of the high ore loss rate and dilution rate is the ore-drawing method of the cut-off grade under the overburden rock formation, and the ore rocks are heavily doped at the ore-drawing mouth. [0003] Since the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C41/22
Inventor 徐庚举孙豁然柳小波贾海波李启轩张洪海刘永会马吉祥
Owner NORTHEASTERN UNIV
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