Self-expanding type expansion body recoverable anchor rod

Abstract

The invention relates to a self-expanding type expansion body recoverable anchor rod, and belongs to the technical field of anchor rods. The self-expanding type expanding body recoverable anchor rod comprises a driving-in anchor head and a rotating main rod, a groove is formed in the driving-in anchor head, and a tenon embedded with the groove is arranged at the front end of the rotating main rod; a plurality of pressure-bearing tables are fixedly arranged on a rod body of the rotating main rod, an arch-shaped expansion body is arranged between every two adjacent pressure-bearing tables, a threaded hole is formed in the upper end of each arch-shaped expansion body, a through hole is formed in the lower end of each arch-shaped expansion body, a threaded section corresponding to the threaded hole is arranged on the rod body of the rotating main rod, and a positioning block is fixedly arranged below each threaded section; a through hole is formed in the rear end of the rotating main rod, and a screwing handle rod is arranged in the through hole in a penetrating mode. The construction technology is simple, recycling is convenient, the problems that most recyclable anchor rods are difficult to recycle, the construction technology is complex and the like are effectively solved, the construction efficiency is improved, and environmental pollution is reduced.

Description

technical field [0001] The invention relates to a self-expanding body-expanding recoverable bolt, which belongs to the technical field of bolts. Background technique [0002] In recent years, with the continuous development of anchoring technology, anchor rods have been more and more widely used in deep foundation pits, slopes and tunnel projects, playing an important role in engineering construction and ensuring construction safety. However, the traditional one-off bolts that have been widely used for a long time have seriously encroached on the urban underground space, hindered subsequent projects and caused serious underground environmental pollution. [0003] In order to solve the problem that traditional anchors cannot be recycled, engineers have developed a variety of recyclable anchors on the basis of traditional anchors, but the existing recyclable anchor technologies still have the following problems: (1) most of them can be recycled The bolts still need grouting m...

AI Technical Summary

Problems solved by technology

However, the traditional one-time anchors that have been used in large quantities for a long time have seriously encroached on the urban underground space, hindered subsequent projects and caused serious underground environmental pollution.

[0003]In order to solve the problem that traditional anchors cannot be recycled, engineers have developed a variety of recyclable anchors on the basis of traditional anchors, but the existing recyclable The bolt technology still has the following problems: (1) Most of the recyclable bolts still need grouting maintenance, the construction period is long, the recovery rate is low, and there are still grouting bodies and other related structures in the rock and soil after recycling; (2 ) The connection with the surrounding rock and soil is not strong enough; (3) It cannot be recycled and is not environmentally friendly

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