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Gunpowder fracturing type special anchor rod

A kind of gunpowder and special technology, which is applied in the installation of bolts, mining equipment, earthwork drilling and mining, etc. It can solve the problems of slurry performance degradation and affect the support effect, and achieve the effect of increasing budget, good support effect and simple operation

Pending Publication Date: 2022-06-28
ANHUI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method is simple to use and the technology is relatively mature, the water remaining in the anchor holes and cracks will directly dilute the grout, resulting in a decrease in the performance of the grout, which will also affect the support effect

Method used

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  • Gunpowder fracturing type special anchor rod
  • Gunpowder fracturing type special anchor rod
  • Gunpowder fracturing type special anchor rod

Examples

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Embodiment Construction

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0030] see Figure 1-Figure 8 , a special type of gunpowder fracturing bolt, comprising a rod body 110, one end of the rod body 110 is installed with a backstop module 300, and at least one gunpowder module 200 is installed on the axial direction of the rod body 110. When in use, the powder module 200 and the back-stop module 300 are inserted into the anchor hole, and the back-stop module 300 is used for clamping the anchor hole to fix the entire anchor rod relatively to the anchor hole.

[0031] The rod body 110 is provided with an installation groove 111, and the gunpowder module 200 is installed in the installation groove 111. The gunpowder module 200 includes two gunpowder boxes 210, and the ends of each gunpowder box 210 are respectively installed with connecting...

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PUM

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Abstract

The invention discloses a gunpowder fracturing type special anchor rod which comprises a rod body, and at least one gunpowder module is installed in the axial direction of the rod body and inserted into an anchor hole. A mounting groove is formed in the rod body, a gunpowder module is mounted in the mounting groove, the gunpowder module comprises a gunpowder box, the side, away from the rod body, of the gunpowder box is a cambered surface plate, a plurality of guide holes are formed in the cambered surface plate, the guide holes and an air injection nozzle can be assembled in an axial sliding mode, and the air injection nozzle is mounted on an air injection plate. A through gas injection hole is formed in the gas injection plate, a gas supply hole crossed and communicated with the gas injection hole is formed in the gas injection nozzle, and the gas supply hole is communicated with the interior of the gunpowder box; the gas injection plate is installed on the air bag, the air bag is installed in the gunpowder box, the interior of the air bag is a hollow explosion cavity, and the explosion cavity is filled with gunpowder. According to the special anchor rod, high-pressure airflow generated by explosive combustion of gunpowder directly acts on the inner wall of the anchor hole, so that the effects of manufacturing cracks and expanding the cracks are achieved.

Description

technical field [0001] The invention relates to an anchor rod, in particular to a gunpowder fracturing type special anchor rod. Background technique [0002] The bolt is the most basic component of roadway support in contemporary coal mines. It reinforces the surrounding rock of the roadway, so that the surrounding rock supports itself. At present, the grouting bolt is the most common bolt in the mine. It is injected into the anchor hole through the grout, so that the grout solidifies the bolt and the surrounding rock into one body to play a supporting role. [0003] In some geological environments of gravel, sand and soft rock, the internal gaps are small. At this time, the way of grouting into the anchor hole through the grouting bolt will make the diffusion range of the slurry around the anchor hole small, that is, the anchor The solidification range of the rod to the surrounding rock and soil is small, and the supporting effect of the bolt will obviously be reduced at t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D20/02E21D21/00
CPCE21D20/02E21D21/0026
Inventor 娄培杰潘长春
Owner ANHUI UNIV OF SCI & TECH
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