Extensible anchor rod based on three-dimensional concave polygonal structure

Abstract

The application provides an extendable anchor rod based on a three-dimensional concave polygon structure, which comprises a rigid rod body and a three-dimensional polygon structure arranged on the outer side of the rigid rod body, the three-dimensional polygon structure comprises a plurality of fold line type anchor cables which are connected with each other; when the rock mass deforms and causes the rigid rod body to break, the three-dimensional polygon structure can extend along the direction of the rigid rod body, thereby achieving multi-section rock mass anchoring. The application can realize elastic anchoring of the multi-section rock mass along the radial direction of the rod body, and is suitable for surrounding rock anchoring under different stress and deformation conditions of the multi-section rock mass.

Description

Technical Field

[0001] This invention relates to an extendable anchor bolt, and more particularly to an extendable anchor bolt based on a three-dimensional concave polygonal structure, belonging to the field of rock mass anchoring technology. Background Technology

[0002] Rock mass anchoring is a measure to stabilize fractured rock masses using anchor bolts or anchor cables. Its main function is to induce additional stress and strain in the rock mass, thereby increasing the overall integrity, tensile strength, shear strength of weak surfaces, and resistance to sliding tangential forces, thus stabilizing the rock mass.

[0003] Existing anchor bolts or cables have poor anchoring effect when used in rock masses under different stress conditions in multiple sections, and are prone to breakage and other problems, resulting in anchoring section failure. Summary of the Invention

[0004] To address the aforementioned technical problems in existing technologies, this invention proposes an extendable anchor rod based on a three-dimensional concave polygonal structure. This anchor rod enables elastic anchoring of multiple rock segments along the radial direction of the rod, and is suitable for anchoring surrounding rock under different stress and deformation conditions in multiple segments. After the rigid rod breaks, the three-dimensional polygonal structure can extend along the direction of the rigid rod, achieving multi-segment anchoring of the rock mass.

[0005] This invention proposes an extendable anchor rod based on a three-dimensional concave polygon structure, comprising:

[0006] Rigid rod, and

[0007] A three-dimensional polygonal structure is disposed on the outside of the rigid rod, the three-dimensional polygonal structure comprising a plurality of polygonal anchor cables, which are interconnected to form a polygonal anchor cable;

[0008] When the rock mass deforms and the rigid rod breaks, the three-dimensional polygonal structure can extend along the direction of the rigid rod to achieve multi-segment anchoring of the rock mass.

[0009] A further improvement of the present invention is that an energy-absorbing pad is provided at the outer end of the rigid rod, and the energy-absorbing pad is connected to the rigid rod by an energy-absorbing bolt.

[0010] A further improvement of the present invention is that an anchoring head is provided at the inner end of the rigid rod, one end of the three-dimensional polygonal structure is connected to the energy-absorbing pad, and the other end is connected to the anchoring head.

[0011] A further improvement of the present invention is that the three-dimensional polygonal structure includes an outer polygonal ring and an inner concave polygonal ring connected by a polygonal anchor cable, the outer polygonal ring and the inner concave polygonal ring being arranged alternately in the length direction and connected by anchor cables.

[0012] A further improvement of the present invention is that the outer polygonal ring and the inner concave polygonal ring have the same number of sides and are both regular polygonal shapes, wherein the anchor cable connects the outer polygonal ring and the inner concave polygonal ring at their corresponding angles.

[0013] A further improvement of the present invention is that both the outer polygonal ring and the inner concave polygonal ring are regular hexagons.

[0014] A further improvement of the present invention is that the three-dimensional polygonal structure is connected to the rock mass through a number of secondary anchor bolts.

[0015] A further improvement of the invention is that the secondary anchor is connected to the corner of the concave polygonal ring.

[0016] A further improvement of the present invention is that the ends of both the anchor head and the secondary anchor rod are connected to the rock mass by an anchoring agent.

[0017] A further improvement of the present invention is that the anchoring agent is a high-strength resin anchoring agent.

[0018] Compared with the prior art, the advantages of the present invention are as follows:

[0019] This invention discloses an extendable anchor rod based on a three-dimensional concave polygonal structure, which can achieve elastic anchoring of multiple rock segments along the radial direction of the rod, and is suitable for anchoring surrounding rock under different stress and deformation conditions in multiple segments of the rock mass. After the rigid rod breaks, the three-dimensional polygonal structure can extend along the direction of the rigid rod to achieve multi-segment anchoring of the rock mass.

[0020] The present invention discloses an extendable anchor bolt based on a three-dimensional concave polygonal structure. In cases of large deformation in the rock mass or rockburst leading to the fracture of the rigid bolt, the three-dimensional concave hexagonal structure formed by six surrounding zigzag anchor cables, together with the secondary anchor bolt, constitutes a multi-segment anchoring system. This system is suitable for anchoring surrounding rock under different stress and deformation conditions in multiple segments of the rock mass. The secondary anchor bolt increases the pull-out resistance of the anchored segment, preventing loosening. Attached Figure Description

[0021] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, in which:

[0022] Figure 1 The diagram shown is a schematic representation of an extendable anchor rod based on a three-dimensional concave polygon structure according to an embodiment of the present invention.

[0023] Figure 2 The diagram shown is a schematic diagram of a three-dimensional polygonal structure according to an embodiment of the present invention.

[0024] In the accompanying drawings, the same parts use the same reference numerals.

[0025] The accompanying drawings are not drawn to scale.

[0026] The meanings of the reference numerals in the attached figures are as follows:

[0027] 1. Rigid rod, 2. Three-dimensional polygonal structure, 11. Energy-absorbing pad, 12. Energy-absorbing bolt, 13. Anchor head, 21. Outer polygonal ring, 22. Inner concave polygonal ring, 23. Secondary anchor bolt, 24. Polygonal anchor cable. Detailed Implementation

[0028] To make the technical solutions and advantages of the present invention clearer, exemplary embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not an exhaustive list of all embodiments. Furthermore, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0029] Figure 1 The diagram schematically illustrates an extendable anchor bolt based on a three-dimensional concave polygonal structure according to the present invention, comprising a rigid rod 1. The rigid rod 1 is cylindrical, tubular, square columnar, or other elongated structures, used to transmit the anchoring force of the entire control device. A three-dimensional polygonal structure 2 is provided on the outer side of the rigid rod 1. The three-dimensional polygonal structure 2 includes several polygonal anchor cables 24, which are interconnected to form the three-dimensional polygonal structure 2. The three-dimensional polygonal structure 2 comprises several polygons in the transverse direction and multiple polygons are connected in the longitudinal direction by anchor cables, thereby forming an elongated structure.

[0030] In this embodiment, the three-dimensional polygonal structure 2 has a certain degree of extensibility. Initially, it connects the rock mass and the rigid rod 1. When the rock mass deforms and causes the rigid rod 1 to break, the three-dimensional polygonal structure 2 can extend along the direction of the rigid rod 1 to achieve multi-segment anchoring of the rock mass.

[0031] In one embodiment, an energy-absorbing pad 11 is provided at the outer end of the rigid rod 1. The energy-absorbing pad 11 is placed at the entrance of the installation hole in the rock mass and seals the installation hole. In this embodiment, the energy-absorbing pad 11 is preferably circular, but it can also be rectangular or other shapes. The outer side of the rigid rod 1 is provided with threads, and an energy-absorbing bolt 12 can be provided on the threads.

[0032] During installation, the energy-absorbing pad 11 is fitted onto the rigid rod 1, with the edge of the energy-absorbing pad 11 supported in the installation hole in the rock mass. The energy-absorbing bolt 12 is installed on the thread of the rigid rod 1 on the outer side of the energy-absorbing pad 11.

[0033] In the extendable anchor bolt based on a three-dimensional concave polygon structure according to this embodiment, the energy-absorbing bolt 12 is used to install the energy-absorbing gasket 11, and is connected by bolts and threads, which is convenient for disassembly and assembly and provides a stable connection. The energy-absorbing gasket 11 can absorb the energy after the rigid rod 1 breaks to a certain extent, and also serves to seal the installation hole.

[0034] In one embodiment, the inner end of the rigid rod 1 is provided with an anchor head 13, which is anchored in the rock mass and fixed by an anchoring agent. One end of the three-dimensional polygonal structure 2 is connected to the energy-absorbing pad 11, and the other end is connected to the anchor head 13.

[0035] In one embodiment, the three-dimensional polygonal structure 2 comprises several outer polygonal rings 21 and several inner concave polygonal rings 22, both of which are formed by multiple zigzag anchor cables 24 connected end-to-end. The outer polygonal rings 21 are larger, while the inner polygonal rings are smaller. The outer polygonal rings 21 and the inner concave polygonal rings 22 are arranged alternately along their length and connected by anchor cables.

[0036] In a preferred embodiment, the outer polygonal ring 21 and the inner concave polygonal ring 22 have the same number of sides and are both regular polygons, wherein the anchor cable connects the outer polygonal ring 21 and the inner concave polygonal ring 22 at their corresponding angles.

[0037] Preferably, both the outer polygonal ring 21 and the inner concave polygonal ring 22 are regular hexagons.

[0038] The outer hexagonal polygonal ring 21 and the inner concave polygonal ring 22 are not only more stable, but also connect to more secondary anchor bolts 23. This embodiment improves the anchoring strength and increases stability by using the outer hexagonal polygonal ring 21 and the inner concave polygonal ring.

[0039] In one embodiment, the three-dimensional polygonal structure 2 is connected to the rock mass via a plurality of secondary anchors 23. The secondary anchors 23 are rod-shaped structures and can be rigid or flexible. Preferably, the secondary anchors 23 are connected to the corners of the concave polygonal ring 22.

[0040] According to the device described in this embodiment, in the event of large deformation of the rock mass or rock burst causing the rigid rod 1 to break, the three-dimensional concave hexagonal structure composed of six zigzag anchor cables and the secondary anchor rod 23 form a multi-segment anchoring system, which is suitable for surrounding rock anchoring under different stress and deformation conditions in multiple segments of the rock mass.

[0041] Secondary anchor bolt 23 can increase the pull-out resistance of the anchorage section and prevent the anchorage section from loosening.

[0042] The ends of both the anchor head 13 and the secondary anchor rod 23 are connected to the rock mass by anchoring agent.

[0043] Preferably, the anchoring agent is a high-strength resin anchoring agent. In this embodiment, the high-strength resin anchoring agent includes unsaturated polyester resin, marble powder, accelerator, and excipients, which are prepared into a putty-like adhesive material in a certain proportion. The putty and curing agent are separated into two-component packaged drug rolls using a polyester film.

[0044] The present invention discloses an extendable anchor rod based on a three-dimensional concave polygonal structure, which can achieve elastic anchoring of multiple rock segments along the radial direction of the rod body. It is suitable for anchoring surrounding rock under different stress and deformation conditions in multiple segments of the rock mass. After the rigid rod body 1 breaks, the three-dimensional polygonal structure 2 can extend along the direction of the rigid rod body 1 to achieve multi-segment anchoring of the rock mass.

[0045] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and / or modifications falling within the scope of the invention, and all changes and / or modifications made according to embodiments of the invention should be covered within the protection scope of the invention.

Claims

1. An extendable anchor rod based on a three-dimensional concave polygon structure, characterized in that, include: Rigid rod (1), and A three-dimensional polygonal structure (2) is provided on the outside of the rigid rod (1). The three-dimensional polygonal structure (2) includes a number of polygonal anchor cables connected to each other. Among them, when the rock mass deforms and the rigid rod (1) breaks, the three-dimensional polygonal structure (2) can extend along the direction of the rigid rod (1) to achieve multi-segment anchoring of the rock mass; An energy-absorbing pad (11) is provided at the outer end of the rigid rod (1), and the energy-absorbing pad (11) is connected to the rigid rod (1) by an energy-absorbing bolt (12). An anchor head (13) is provided at the inner end of the rigid rod (1). One end of the three-dimensional polygonal structure (2) is connected to the energy-absorbing pad (11), and the other end is connected to the anchor head (13). The three-dimensional polygonal structure (2) includes an outer polygonal ring (21) and an inner concave polygonal ring (22) formed by connecting polygonal anchor cables. The outer polygonal ring (21) and the inner concave polygonal ring (22) are arranged alternately in the length direction and connected by anchor cables.

2. The extendable anchor bolt based on a three-dimensional concave polygon structure according to claim 1, characterized in that, The outer polygonal ring (21) and the inner concave polygonal ring (22) have the same number of sides and are both regular polygons. The anchor cable connects the outer polygonal ring (21) and the inner concave polygonal ring (22) at their corresponding angles.

3. The extendable anchor rod based on a three-dimensional concave polygon structure according to claim 2, characterized in that, Both the outer polygonal ring (21) and the inner concave polygonal ring (22) are regular hexagons.

4. The extendable anchor bolt based on a three-dimensional concave polygon structure according to claim 3, characterized in that, The three-dimensional polygonal structure (2) is connected to the rock mass through several secondary anchors (23).

5. The extendable anchor bolt based on a three-dimensional concave polygon structure according to claim 4, characterized in that, The secondary anchor (23) is connected to the corner of the concave polygonal ring (22).

6. The extendable anchor bolt based on a three-dimensional concave polygon structure according to claim 5, characterized in that, The ends of the anchor head (13) and the secondary anchor rod (23) are connected to the rock mass by anchoring agent.

7. The extendable anchor bolt based on a three-dimensional concave polygon structure according to claim 6, characterized in that, The anchoring agent is a high-strength resin anchoring agent.

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