Self-feedback stratum information and multi-time repairing anchoring structure and anchoring and repairing method

Abstract

The invention discloses a self-feedback stratum information and multi-time repairing anchoring structure and an anchoring and repairing method. The self-feedback stratum information and multi-time repairing anchoring structure comprises a hollow anchor rod, wherein the bottom of an anchoring section of the anchor rod is fixedly connected with a circular base plate; a plurality of annular fixing rings are arranged on a rod body of the anchor rod at intervals in a sleeving mode; a plurality of third circular holes are formed in the fixing rings; a free section of the anchor rod penetrates through a porous arched base plate; the porous arched base plate is fixed to the rock wall surface; pipes penetrate through the third circular holes and second circular holes in the same axis correspondingly; a rubber film column is installed in each pipe; the rubber film columns are filled with gas; anchor holes are filled with slurry injected through the anchor rod and solidified; the outer walls of the rubber film columns make close contact with the solidified slurry after the pipes are pulled out; and pressure sensors are installed inside the rubber film columns and are in signal connection witha controller. According to the self-feedback stratum information and multi-time repairing anchoring structure and the anchoring and repairing method, the anchoring structure and a stratum are linked,stratum deformation information can be automatically fed back, later repairing of the stratum through the anchoring structure is facilitated, the structure is simple, and multi-time repairing can beachieved.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering anchoring and supporting, and relates to an anchoring structure and an anchoring and repairing method for self-feedback stratum information and multiple repairs. Background technique [0002] In recent years, geotechnical anchoring technology has been widely used in geotechnical engineering such as mines, tunnels, foundation pits, and slopes with broken surrounding rocks. The supporting effect is good and the economic benefits are significant. During the construction and use of underground engineering, foundation pits and slopes involved in geotechnical engineering, in order to prevent the formation from deforming, collapsing or destabilizing and endangering safety, bolts have become the most widely used support method. The current bolt support mainly uses steel bars as the rod body, and grouting outside the rod body is used to fill the gap between the steel bar body and the drill...

AI Technical Summary

Problems solved by technology

[0004] 1. Due to the influence of long-term creep of rock and soil, excavation and unloading, and temperature and humidity cycles between the steel bar body and the grouting body and between the grouting body and the formation junction, cracks will continue to be generated, and then steel bars will be corroded , The rod body is loose or even falls off, which affects the strength of the anchor rod and greatly shortens the service life of the anchor rod; the adaptation and feedback capabilities of the anchor structure to environmental changes have not been well resolved

[0005] 2. Most of the current anchor improvements are based on the prior improvement of the anchor’s own structure and concrete composition. After the construction is completed, the interior of the anchor cannot be inspected, and few people will focus on the post-maintenance and post-reinforcement of the anchor after grouting make improvements

[0006] 3. Although there are self-repairing grouting bolts that use the physiological characteristics of microorganisms to fill cracks, the requirements for microbial cultivation technology are high, the operation is complicated, and the cost is high, and the repair effect cannot be feedback and evaluated

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