Non-explosive mining method utilizing 3D printing net-shaped component and barren rock for filling

A technology of 3D printing and mining methods, which is applied in ground mining, mining equipment, underground mining, etc., can solve the problems of upper and lower surrounding rock collapse, high ore dilution rate, and high mining cost, so as to reduce lifting costs and increase efficiency , Reduce the effect of surrounding rock disturbance

Pending Publication Date: 2022-05-06
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a non-explosive mining method using 3D printed mesh components and waste rocks for filling. The existing mining method has the following problems. Blasting is used to drop the ore, and the blasting during the mining process induces the collapse of the surrounding rocks of the upper and lower plates. , which in turn leads to the problem of high ore dilution rate, high mining cost and low mining efficiency

Method used

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  • Non-explosive mining method utilizing 3D printing net-shaped component and barren rock for filling
  • Non-explosive mining method utilizing 3D printing net-shaped component and barren rock for filling
  • Non-explosive mining method utilizing 3D printing net-shaped component and barren rock for filling

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Effect test

Embodiment 1

[0040] Such as Figure 1~Figure 6 , Figure 9 and Figure 10 As shown, this embodiment provides a non-explosive mining method for filling with 3D printed mesh components and waste rocks. The mining method includes:

[0041] S110, the construction roadway, in the upper middle section of the ore body 3, construct the upper roadway inside the ore body 3 along the direction of the ore body 3, and construct the lower roadway in the lower middle section of the ore body 3 along the horizontal direction at the footwall of the ore body 3 roadway;

[0042] S120, mining of the ore body 3, first use the low and high torque raise drilling machine 5 to drill the hole 4 in the middle of the ore body 3, and then use the cutter head of the low and high torque raise drilling machine 5 to cut the broken parts in the ore body 3 from bottom to top The ore body, the broken ore body is cut into powdery ore body 6, and the powdery ore body 6 falls into the lower roadway, and the goaf 7 is formed in ...

Embodiment 2

[0047] Such as Figure 1~Figure 6 , Figure 9 , Figure 11 and Figure 12 As shown, this embodiment provides a non-explosive mining method for filling with 3D printed mesh components and waste rocks. The mining method includes:

[0048] S210. Dividing the ore body 3, dividing the ore body 3 into mine houses 31 and ore pillars 32 along the strike of the ore body 3, and the mine houses 31 and ore pillars 32 are sequentially distributed at intervals.

[0049] S220, the construction roadway, in the upper middle section of the ore body 3, construct the upper vein transportation lane 11 inside the mine house 31 along the direction of the ore body 3, and construct the upper vein roadway 21 inside the ore body 3; in the ore body 3 In the lower middle section of the mine building 31, the lower vein roadway 12 is constructed at the bottom wall of the mine house 31 along the horizontal direction, and the lower vein tunnel 22 is constructed at the bottom wall of the ore pillar 32.

[...

Embodiment 3

[0062] Such as Figure 7 and Figure 8 As shown, this embodiment provides a non-explosive mining method using 3D printing mesh components and waste rocks for filling. On the basis of the mining method provided in Embodiment 2, the mining method implemented in this implementation is mining in ore body 3 In the process of filling the goaf 7 with waste rock 9, a mine 31 is firstly mined in the mine 31, and after the mining in the mine 31 is completed, the ore pillar goaf 72 formed in the mine 31 is filled with waste rock 9; Then the ore pillar 32 adjacent to the mine house 31 is mined. After the ore pillar 32 is mined, the ore pillar goaf 72 formed in the ore pillar 32 is filled with waste rock 9 .

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Abstract

The invention discloses a non-explosive mining method for filling by utilizing a 3D printing net-shaped component and waste rocks. The mining method comprises the following steps: constructing an upper roadway in an ore body along the trend of the ore body on the upper middle section of the ore body, and constructing a lower roadway in the footwall of the ore body along the horizontal direction on the lower middle section of the ore body; the method comprises the steps that firstly, a low large-torque raise boring machine is used for conducting drilling in the middle of an ore body, then a cutter head of the low large-torque raise boring machine is used for cutting a broken ore body in the ore body from bottom to top, the broken ore body is cut into a powdery ore body, the powdery ore body falls into a lower roadway, and a goaf is formed in the ore body; and after stoping is completed, the 3D printing high-strength resin net-shaped component is placed in the goaf, the 3D printing high-strength resin net-shaped component is filled with waste rocks, and mining is completed. According to the mining method, non-explosion mining is achieved, disturbance to surrounding rocks of upper and lower plates in the ore breaking process is reduced, the situation that the surrounding rocks are mixed into the ore is reduced, the ore dilution rate is reduced, the safety of ore mining is guaranteed, cost is low, and efficiency is high.

Description

technical field [0001] The invention relates to the field of mining technology, in particular to a non-explosive mining method for filling with 3D printed mesh components and waste rocks. Background technique [0002] Steeply inclined thin ore bodies account for a considerable proportion of my country's metal mineral resources. The mining difficulty of this type of ore body is closely related to factors such as the stability of the ore body and the stability of the upper and lower wall rocks. If the stability of the upper and lower wall rocks is good, no matter what the stability of the ore body is, the difficulty of mining will be greatly reduced, such as the medium-deep hole segmental filling method and medium-deep hole pre-cracking described in patents CN110985114A, CN110952982A and CN110905509A Blasting method and deep hole ore retention mining method, etc. Although the above method improves the mining efficiency to a certain extent, the technical problems of high ore ...

Claims

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Application Information

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IPC IPC(8): E21C41/22E21F15/00E21C27/22
CPCE21C41/22E21F15/00E21C27/22
Inventor 曹帅李佳建高博
Owner UNIV OF SCI & TECH BEIJING
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