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

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...

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

Images