Method for forming weak protective layer above mine roadway

A protective layer and roadway technology, which is applied in ground mining, earth drilling, underground mining, etc., can solve the problems of poor environmental protection and high risk of weak protective layers, and achieve the goal of improving efficiency, environmental protection and safety, and improving effects Effect

Active Publication Date: 2022-02-22
西安闪光能源科技有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for forming a weak protective layer above the mine roadway, so as to solve the problems of high risk and poor environmental protection in the current use of explosives to manufacture weak protective layers

Method used

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  • Method for forming weak protective layer above mine roadway
  • Method for forming weak protective layer above mine roadway
  • Method for forming weak protective layer above mine roadway

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Embodiment Construction

[0032] The content of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0033] A method for forming a weak protective layer above a mine roadway, comprising an energy converter 12 and an orifice device 11 .

[0034] like figure 2 , image 3 As shown, the energy converter 12 includes a ground electrode 1 , a metal wire 2 , a high voltage electrode 3 , an insulating support 4 , a casing 5 , a cable interface 6 and a shock wave directional reflective arc plate 7 .

[0035] The shell 5 is a cylindrical structure, and its interior is hollow. The high-voltage electrode 3 is fixed on the end of the shell 5 through the insulating support 4. The cable at the end of the cable interface 6 passes through the body of the shell 5, the insulating support 4 and the rear end of the high-voltage electrode 3. connection, the ground electrode 1 is connected to the front end of the housing 5 through two shoc...

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Abstract

The invention relates to a method for forming a weak protective layer above a mine roadway, in order to solve the problems of high risk and poor environmental protection of using explosives to manufacture the weak protective layer at present. The method for forming the weak protective layer above the mine roadway includes drilling holes on the top rock formation, the holes include multiple groups of drill holes arranged along the extension direction of the mine roadway, the axes of each group of drill holes are located on the same plane, and each group of drill holes The openings of the holes are evenly distributed on the top rock formation, the drilled holes intersect with the set weak protective layer, and the intersections are evenly distributed on the weak protective layer; install the orifice device in each drilled hole, and then inject in the drilled hole Full of water; connect the energy converter with the pulse power drive source; then place the energy converter in the borehole; start the pulse power drive source to discharge the energy converter, and the shock wave generated by the energy converter will crack the top rock formation ; The intensity of the shock wave is 220‑229MPa; the cracks produced after the shock wave operation in multiple drilling holes form a weak protective layer.

Description

technical field [0001] The invention belongs to the technical field of mine engineering, and in particular relates to a method for forming a weak protective layer above a mine roadway. Background technique [0002] Mineral resources are the material basis of industrialization. No matter in the underground development process of metal minerals, non-metallic minerals or coal, rock bursts will be formed due to changes in rock formation stress. Rock burst will threaten the life of miners, and at the same time, there will be certain safety hazards in the mine and the equipment in it. Therefore, rock burst is one of the main disasters in the process of mineral resource development. The existing technical means are usually to set a weak protective layer (weak layer) between the underground roadway and the deep formation, and use the compressibility of the weak protective layer to absorb the pressure from the earth, thereby effectively relieving the formation pressure on the roadway...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/16E21C37/18
CPCE21C41/16E21C37/18
Inventor 刘美娟张硕张永民汤俊萍
Owner 西安闪光能源科技有限公司
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