阅读说明：本技术 一种可主动修复的抗震锚杆及其应用方法 (Actively-repairable anti-seismic anchor rod and application method thereof ) 是由 吴学震 蒋宇静 郑含芳 关振长 王刚 李大勇 于 2021-03-09 设计创作，主要内容包括：本发明涉及一种可主动修复的抗震锚杆及其应用方法,包括锚杆体,所述锚杆体外表面延其长度方向间隔设置有若干热熔条,所述热熔条贴设在锚杆体上并在该组合体外周绕设有电热线圈,所述锚杆体在热熔条下端处表面均设有气化膨胀囊,所述锚杆体内端插设入锚孔内,外端部经螺母与托盘固紧,锚杆体外端固设有与电热线圈连接的电磁加热控制器,在锚固体结构产生破坏后,通过加热使热熔条熔化,渗入并填充所述锚杆体周围的裂隙；将破碎的锚固体重新粘结,从而恢复锚固力。(The invention relates to an actively repairable anti-seismic anchor rod and an application method thereof, wherein the actively repairable anti-seismic anchor rod comprises an anchor rod body, wherein a plurality of hot melt strips are arranged on the outer surface of the anchor rod body at intervals along the length direction of the anchor rod body, the hot melt strips are attached to the anchor rod body, an electric heating coil is wound on the periphery of the anchor rod body, gasification expansion capsules are arranged on the surfaces of the lower ends of the hot melt strips of the anchor rod body, the inner end of the anchor rod body is inserted into an anchor hole, the outer end of the anchor rod body is fastened with a tray through a nut, an electromagnetic heating controller connected with the electric heating coil is fixedly arranged at the outer end of the anchor rod body, and after an anchoring body structure is damaged; the broken anchor is rebonded, restoring the anchoring force.)

1. The utility model provides a but initiative prosthetic antidetonation stock which characterized in that: the hot-melt anchor rod comprises an anchor rod body, wherein a plurality of hot-melt strips are arranged on the outer surface of the anchor rod body at intervals along the length direction of the anchor rod body, the hot-melt strips are attached to the anchor rod body, an electric heating coil is wound on the periphery of the anchor rod body, a gasification expansion bag is arranged on the surface of the lower end of each hot-melt strip of the anchor rod body, the inner end of the anchor rod body is inserted into an anchor hole, the outer end of the anchor rod body is fastened with a tray through a nut, and the outer end of the anchor rod body is fixedly.

2. An actively repairable aseismic anchor rod according to claim 1, wherein: the gasification expansion capsule comprises an expansion capsule shell and a heating gasifiable material filled in the expansion capsule shell.

3. An actively repairable aseismic anchor rod according to claim 1, wherein: the anchor rod body is inserted into the anchor hole and then is filled and solidified by the anchoring agent to form an anchoring body, and the hot melt strip, the gasification expansion bag and the electric heating coil are wrapped and arranged in the anchoring body.

4. An actively repairable aseismic anchor rod according to claim 1, wherein: and a pressure sensor is arranged in the hot melt strip.

5. An actively repairable aseismic anchor rod according to claim 1, wherein: and a moisture sensor is fixedly arranged on the anchor rod body.

6. An actively repairable aseismic anchor rod according to claim 1, wherein: the hot-melting strip material is made of a low-melting-point metal material.

7. An application method of an actively repairable anti-seismic anchor rod, characterized in that the actively repairable anti-seismic anchor rod according to any one of claims 1-6 is used, and the steps are as follows: s1: drilling an anchor hole in a rock mass to be supported, wherein the diameter of the anchor hole is larger than that of the anchor rod body, the hot-melt strip and the electric heating coil complex; s2: anchoring the anchor rod body, the hot-melt strip and the electric heating coil complex in the anchor hole through an anchoring agent, and forming an anchoring body after the anchoring agent is solidified; s3: fixing the exposed end of the anchor rod through a nut and a tray to finish the primary installation of the anchor rod; s4: after the anchoring agent of the anchor rod is broken at the position of a rock fracture caused by an earthquake, the electromagnetic heating controller controls the electromagnetic heating coil to heat the anchor rod body, the heat of the anchor rod body is transferred to the hot melting strip so as to melt the hot melting strip, and the melted material is filled in the broken area of the anchoring agent.

8. An application method of an actively repairable anti-seismic anchor rod according to claim 7, wherein: if the anchoring body cracking area is positioned at the upper part of the hot melt strip, the hot melt strip cannot flow upwards after being melted, and the gasification expansion bag can be extruded upwards into the cracked anchoring body after being unfolded.

Technical Field

The invention relates to an actively repairable anti-seismic anchor rod and an application method thereof.

Background

The anchor bolt support can change the mechanical characteristics of surrounding rocks, obtain good support effect, and bring incomparable technical and economic benefits of the traditional support mode. As the bolting theory is continuously developed and perfected, the bolting technology is gradually improved and improved, and has been widely regarded at home and abroad and widely applied to the fields of geotechnical engineering and other underground engineering.

China belongs to the countries with frequent earthquakes, and the earthquake action often causes the damage of the anchoring agent and reduces the supporting action of the anchor rod. When the seismic intensity is high, the fractured rock mass generates shearing dislocation at the fracture position, so that the anchoring agent of the traditional anchor rod is cracked and damaged, and the anchoring force can be directly reduced; on the other hand, after the anchoring agent is damaged, underground water in the cracks directly contacts the anchor rod, so that the traditional anchor rod can be rapidly aged and corroded, and the anchoring effect is lost.

The main principle of the existing anchor rod corrosion prevention is isolation and insulation, and the common measures comprise: sleeve cladding, coating isolation, surface cathodic protection and the like. But the sleeve or the coating is added on the surface, which can affect the gripping force of the anchor rod. The cathode protection can greatly increase the manufacturing cost, limit the length of the anchor rod and have higher long-term maintenance cost.

Disclosure of Invention

In view of the defects of the prior art, the invention aims to provide an actively repairable anti-seismic anchor rod and an application method thereof, and the actively repairable anti-seismic anchor rod is simple in structure, stable and convenient.

In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a but initiative prosthetic antidetonation stock, includes the stock body, the stock body surface is provided with a plurality of hot melt strips along its length direction interval, hot melt strip subsides are established on the stock body and around being equipped with electric heating coil in this assembly periphery, the stock body all is equipped with gasification inflation bag in hot melt strip lower extreme department surface, stock body inner is inserted and is established in the anchor eye, and outer tip is fastened through nut and tray, and the stock body outer end sets firmly the electromagnetic heating controller who is connected with electric heating coil.

Further, the gasification expansion capsule comprises an expansion capsule shell and a heating gasifiable material filled in the expansion capsule shell.

Furthermore, the anchor rod body is inserted into the anchor hole and then is filled and solidified by the anchoring agent to form an anchoring body, and the hot melt strip, the gasification expansion bag and the electric heating coil are wrapped and arranged in the anchoring body.

Furthermore, a pressure sensor is arranged in the hot melt strip, the pressure of liquid under the expansion and extrusion action of the gasification expansion bag after the hot melt strip is melted can be tested, a test signal is transmitted out through a lead, and whether cracks exist in the anchoring body can be intelligently judged according to the reading of the pressure sensor and the expansion characteristic of the heating expandable/gasification material, so that basis and guidance are provided for anchor rod repair.

Furthermore, a moisture sensor is fixedly arranged on the anchor rod body, and when the anchoring body around the anchor rod body cracks and moisture contacts the anchor rod body, the moisture sensor transmits a signal; and after receiving the signal, heating the anchor rod body through the electromagnetic heating controller and the electromagnetic heating coil.

Furthermore, the hot melt strip material is a low melting point metal material, such as tin metal.

An application method of an actively repairable anti-seismic anchor rod is carried out according to the following steps: s1: drilling an anchor hole in a rock mass to be supported, wherein the diameter of the anchor hole is larger than that of the anchor rod body, the hot-melt strip and the electric heating coil complex; s2: anchoring the anchor rod body, the hot-melt strip and the electric heating coil complex in the anchor hole through an anchoring agent, and forming an anchoring body after the anchoring agent is solidified; s3: fixing the exposed end of the anchor rod through a nut and a tray to finish the primary installation of the anchor rod; s4: after the anchoring agent of the anchor rod is broken at the position of a rock fracture caused by an earthquake, the electromagnetic heating controller controls the electromagnetic heating coil to heat the anchor rod body, the heat of the anchor rod body is transferred to the hot melting strip so as to melt the hot melting strip, and the melted material is filled in the broken area of the anchoring agent.

Furthermore, if the anchor cracking area is positioned at the upper part of the hot melt strip, the hot melt strip cannot flow upwards after being melted, and the gasification expansion bag can be extruded upwards into the cracked anchor after being unfolded.

Compared with the prior art, the invention has the following beneficial effects: melting the hot melting strip by electrifying and heating, and infiltrating and filling cracks around the anchor rod body; on the one hand, the broken anchoring body is bonded again, so that the anchoring force is restored; on the other hand, underground water and air are prevented from contacting the anchor rod, so that the anchor rod is prevented from being locally corroded; and if the anchoring body cracking area is positioned at the upper part of the hot melt strip, the hot melt strip cannot flow upwards after being melted, and the gasification expansion bag can be extruded upwards into the cracked anchoring body after being unfolded, so that the maintenance cost is low.

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Drawings

FIG. 1 is a schematic configuration diagram of an embodiment of the present invention;

FIG. 2 is a schematic longitudinal cross-sectional view of an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of an embodiment of the present invention.

In the figure: 1-an anchor rod body; 2-a nut; 3-a tray; 4-an anchoring agent; 5-hot-melting the strip; 6-electric heating coil; 7-an electromagnetic heating controller; 8-gasifying and expanding the bag; 9-rock mass to be supported; 10-anchor hole.

Detailed Description

In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.

As shown in fig. 1 to 3, an actively repairable anti-seismic anchor rod comprises an anchor rod body 1, wherein a plurality of hot-melt strips 5 are arranged on the outer surface of the anchor rod body at intervals along the length direction of the anchor rod body, the hot-melt strips are attached to the anchor rod body and wound on an electric heating coil 6 on the periphery of the assembly, gasification expansion capsules 8 are arranged on the surface of the anchor rod body at the lower end of each hot-melt strip, the inner end of the anchor rod body is inserted into an anchor hole 10, the outer end of the anchor rod body is fastened with a tray 3 through a nut 2, and an electromagnetic heating controller 7 connected with the electric heating coil is fixedly arranged at the outer end of.

In an embodiment of the invention, the gasification expansion bladder comprises an expansion bladder shell and a heated vaporizable material filled therein.

In the embodiment of the invention, the anchor rod body is inserted into the anchor hole and then is filled and solidified by the anchoring agent 4 to form the anchoring body, and the hot melt strip, the gasification expansion capsule and the electric heating coil are wrapped and positioned in the anchoring body.

In the embodiment of the invention, the pressure sensor (not shown in the attached drawing) is arranged in the hot melt strip, so that the pressure of liquid under the expansion and extrusion action of the gasification expansion bag after the hot melt strip is melted can be tested, a test signal is transmitted by a lead, and whether cracks exist in the anchoring body can be intelligently judged according to the reading of the pressure sensor and the expansion characteristic of the heating expandable/gasification material, thereby providing basis and guidance for the repairing of the anchor rod.

In the embodiment of the invention, a moisture sensor (not shown in the drawing) is fixedly arranged on the anchor rod body, and when the anchor body around the anchor rod body cracks and moisture contacts the anchor rod body, the moisture sensor transmits a signal; and after receiving the signal, heating the anchor rod body through the electromagnetic heating controller and the electromagnetic heating coil.

In the embodiment of the invention, the hot melt strip material is a low melting point metal material, such as tin metal.

In the embodiment of the invention, the method for judging whether the concrete structure has cracks comprises the following steps: when the intelligent repair component is electrified and heated, the expansion bag expands; if the reading of the pressure sensor continuously rises along with the rise of the temperature, the repair material can be judged not to seep out, and no crack exists around the intelligent repair component; if the pressure sensor reading does not continuously increase with increasing temperature, it can be determined that the repair material may seep out and there is a crack around the intelligent repair member.

An application method of an actively repairable anti-seismic anchor rod is carried out according to the following steps: s1: drilling an anchor hole in a rock mass to be supported, wherein the diameter of the anchor hole is larger than that of the anchor rod body, the hot-melt strip and the electric heating coil complex; s2: anchoring the anchor rod body, the hot-melt strip and the electric heating coil complex in the anchor hole through an anchoring agent, and forming an anchoring body after the anchoring agent is solidified; s3: fixing the exposed end of the anchor rod through a nut and a tray to finish the primary installation of the anchor rod; s4: after the anchoring agent of the anchor rod is broken at the position of a rock fracture caused by an earthquake, the electromagnetic heating controller controls the electromagnetic heating coil to heat the anchor rod body, the heat of the anchor rod body is transferred to the hot melting strip so as to melt the hot melting strip, and the melted material is filled in the broken area of the anchoring agent.

In the embodiment of the invention, if the anchor cracking area is positioned at the upper part of the hot melt strip, the hot melt strip cannot flow upwards after being melted, and the gasification expansion bag can be extruded upwards into the cracked anchor after being unfolded.

When the anchoring structure is damaged due to earthquake, the hot melting strip is melted by electrifying and heating, and the hot melting strip permeates into and fills cracks around the anchor rod body; on the one hand, the broken anchoring body is bonded again, so that the anchoring force is restored; on the other hand, underground water and air are prevented from contacting the anchor rod, so that the anchor rod is prevented from being locally corroded; based on the two points, the novel anchor rod has the characteristic of being capable of actively repairing after an earthquake.

The invention is not limited to the above-mentioned preferred embodiments, and any person can derive other actively repairable anti-seismic anchor rods and application methods thereof according to the teaching of the invention. All equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.