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Anchoring structure for liquid-injection corrosion-resistant anchor rod or anchor cable and construction method thereof

A technology for anchoring structures and bolts, which is applied in the direction of basic structure engineering, installation of bolts, earthwork drilling and mining, etc. It can solve problems such as water sealing, anti-corrosion problems, unsatisfactory support effects, and bolt corrosion. Achieve the effects of simple and reliable processing and manufacturing technology, superior cost performance, and good supporting effect

Inactive Publication Date: 2011-08-10
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (2) Most of the water contained in the muddy weakly cemented soft rock strata is strongly alkaline, and the corrosion of the bolt is serious
[0008] In summary, the single-end anchorage type and ordinary grouting bolts cannot effectively solve the problems of water sealing and anti-corrosion in the reinforcement of muddy weakly cemented expansive soft rock formations, and the supporting effect is not ideal

Method used

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  • Anchoring structure for liquid-injection corrosion-resistant anchor rod or anchor cable and construction method thereof
  • Anchoring structure for liquid-injection corrosion-resistant anchor rod or anchor cable and construction method thereof
  • Anchoring structure for liquid-injection corrosion-resistant anchor rod or anchor cable and construction method thereof

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Embodiment Construction

[0026] Such as figure 1 As shown, the anchoring structure of the full-length liquid injection anti-corrosion anchor rod of the present invention is that it includes a resin end-anchor anchor rod body 4 installed in the anchor hole 8, and a grout stopper 3 is also installed on the opening of the anchor hole 8 , the bolt head is exposed outside the anchor hole 8 from the socket of the grout stopper 3; two sockets are also processed on the grout stopper 3, and the liquid injection nozzle 1 is inserted into one of the sockets, and the liquid injection nozzle 1 Fill the anchor hole 8 with chemical slurry 13, and insert the exhaust pipe 2 with both ends open in the other socket; Vents 11 are arranged on the peripheral surface of the trachea 2 . Such as figure 2 As shown, the inlet of the liquid injection nozzle 1 is equipped with a check valve ball 5 and a return spring 7 , and the peripheral surface of the inlet end of the liquid injection nozzle 1 is provided with a card slot 6...

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Abstract

The invention discloses an anchoring structure for a liquid-injection corrosion-resistant anchor rod or anchor cable and a construction method thereof. The anchoring structure comprises a resin end-anchored anchor rod or anchor cable body arranged in an anchor hole, wherein a grouting-stop plug is also arranged at the opening of the anchor hole; an anchor rod head or an anchor cable head is exposed out of the anchor hole from the plug hole of the grouting-stop plug; the grouting-stop plug is also provided with two plug holes; a liquid injection nozzle is inserted into one plug hole and chemical grout is filled into the anchor hole through the liquid injection nozzle; an exhaust pipe with two open ends is inserted into the other plug hole; a check-valve ball and a return spring are arranged in the liquid injection nozzle; a locking slot connected with grouting equipment is reserved on the peripheral surface of the liquid injection nozzle; the length of the exhaust pipe is equivalent to that of the end-anchored anchor rod or anchor cable; and exhaust holes are reserved on the peripheral surface of the exhaust pipe close to the bottom of a drilled hole. The anchoring structure solves the problem of sealing water and preventing corrosion of anchor rod holes at the positions such as an arch part and the like, not only can serve as permanent support, but also can serve as temporary support.

Description

technical field [0001] The present invention relates to an anchor rod or an anchor cable used for support in mines, traffic and water conservancy projects, in particular to a liquid-injected anti-corrosion anchor rod and an anchor used for the support of muddy weakly cemented soft rock roadways, chambers and tunnels containing strong alkaline water search. Background technique [0002] In the construction of mine roadways, chambers and tunnels involved in geotechnical engineering, in order to prevent the surrounding rock from being deformed or unstable and endangering safety, one of the main support technologies for strengthening the surrounding rock is to use anchor rods or anchor cables. Anchor rod or anchor cable support is to drill anchor holes in the surrounding rock of the roadway, and anchor the anchor rod or anchor cable in the anchor hole (the built-in anchor rod is called the anchor hole and the anchor rod eye; the built-in anchor cable is called the anchor cable h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D20/02E21D21/00E02D5/74
Inventor 李廷春邢雪阳
Owner SHANDONG UNIV OF SCI & TECH
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