Explosion fracturing type grouting anchor rod

Abstract

The invention discloses an explosion fracturing type grouting anchor rod. The explosion fracturing type grouting anchor rod comprises an inner rod body, a middle rod body and an outer rod body, wherein the outer rod body sleeves the middle rod body outside in a mode of rotating relative to the circumference, and the inner rod body sleeves the middle rod body outside in a mode of rotating relative to the circumference; a mounting groove is formed in the outer rod body, a gunpowder box is mounted in the mounting groove, a gunpowder groove and a power groove are formed in the gunpowder box correspondingly, the power groove and the gunpowder groove are separated through a pore plate, the pore plate is mounted at the top of the gunpowder groove, and a plurality of through plate holes are formed in the pore plate; a fracturing plate is mounted in the power groove in a clamped, slidable and sealed mode, a fracturing head is mounted on the fracturing plate, a through gas injection hole is formed in the fracturing head and the fracturing plate, and the gas injection hole is used for leading high-pressure gas flow in the power groove out of the gunpowder box, so that the high-pressure gas flow is led into surrounding rock around an anchor hole; the gunpowder groove is filled with gunpowder, an ignition needle is covered with the gunpowder, the two ends of the ignition needle are electrically connected with one ends of different ignition wires correspondingly, and the other ends of the ignition wires penetrate through a wire pipe and then are electrically connected with a connector.

Description

technical field [0001] The invention relates to an anchor rod, in particular to an explosive fracturing grouting anchor rod. Background technique [0002] The bolt is the most basic part of roadway support in contemporary coal mines. It reinforces the surrounding rock of the roadway so that the surrounding rock can support 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 surrounding rock into one to play the role of support. [0003] In the geological environment of some crushed stone, sandstone, and soft rock, the internal gaps are small. At this time, the method of grouting the anchor hole through the grouted anchor rod will make the diffusion range of the grout around the anchor hole small, that is, the anchor hole. The solidification range of the rods to the surrounding rock and soil is small, and the supporting effect of the bolts w...

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

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