Energy-absorbing anchor rod suitable for supporting high-stress rock mass

Abstract

The utility model provides an energy-absorbing anchor rod suitable for high-stress rock mass supporting, and belongs to the technical field of metal deposit underground rock mass supporting. The energy-absorbing anchor rod comprises a rod body, the rod body comprises an anchoring section used for being inserted into an anchor rod hole of a rock mass and a free section located outside the anchor rod hole. A fastening nut and a first energy absorption structure are sequentially arranged in the free section of the rod body from outside to inside, and the first energy absorption structure comprises a base arranged on the outer side of the rod body in a sleeving mode. A second energy absorption structure is arranged in the anchoring section of the rod body and is of a tubular structure arranged on the outer side of the rod body in a sleeving mode. And the middle part of the anchoring section of the rod body is of a fried dough twist-shaped structure. According to the energy-absorbing anchor rod, by arranging the first energy-absorbing structure, the second energy-absorbing structure and the fried dough twist-shaped structure, a multi-stage energy-absorbing structure can be formed. In the large-deformation energy release process of the high-stress rock mass, the multi-stage energy absorption structure can effectively absorb energy and yield, so that the constant-resistance effect is achieved, stable supporting force is provided for the anchor rod, and the supporting requirement of the high-stress rock mass is met.

Description

Technical Field

[0001] The present application relates to the technical field of underground rock support in metal deposits, and in particular to an energy-absorbing anchor suitable for high-stress rock support. Background Art

[0002] Deep rock mass engineering often faces the "three highs and one disturbance" problem, making it extremely prone to instability. High stress has a significant impact on rock mass stability. The key to improving the stability of high-stress rock mass lies in releasing the in-situ stress in the stratum where the roadway is located and absorbing the extrusion deformation of the rock mass.

[0003] Currently, traditional support anchors, such as resin anchors and pipe seam anchors, can only provide simple support and are relatively inadequate in resisting large deformations. They are prone to failure when the rock mass deforms excessively, unable to provide constant resistance, and are only suitable for environments with low stress. To meet the support needs of high-stress rock masses, patent publication number CN219431862U provides a mortar anchor suitable for supporting high-stress surrounding rock. This patent connects the sliding surface of the anchor head to an expansion head. A top clip is placed at the top of the expansion head. A protective sleeve is placed on the outside of the expansion head and the top clip. A nut washer is provided at the bottom of the expansion head. The end of the rod away from the anchor head is threadedly connected to a grout stopper, a tray, and a threaded cap from left to right. The end of the expansion head is welded with anti-pullout barbs, and the outside of the rod is coated with an anti-corrosion layer. This patent ensures that the anchor rod has permanent support by ensuring corrosion resistance in a water-salt environment, allowing it to be used to support high-stress surrounding rock. However, this method does not effectively absorb energy.

[0004] In view of this, it is still necessary to provide an energy-absorbing anchor suitable for high-stress rock support. Summary of the Invention

[0005] In view of the technical problems existing in the background technology, this application provides an energy-absorbing anchor suitable for supporting high-stress rock masses. During the large deformation and energy release process of the high-stress rock mass, the energy-absorbing anchor can release pressure through a multi-stage energy-absorbing structure, thereby achieving a constant resistance effect and providing stable support force for the anchor.

[0006] An embodiment of the present application provides an energy-absorbing anchor suitable for high-stress rock support, comprising a rod body; the rod body comprises an anchoring section for inserting into the anchor hole of the rock body and an air-facing section located outside the anchor hole; a fastening nut and a first energy-absorbing structure are sequentially arranged in the air-facing section of the rod body from the outside to the inside, the first energy-absorbing structure comprising a base sleeved on the outside of the rod body; a second energy-absorbing structure is arranged in the anchoring section of the rod body, the second energy-absorbing structure is a tubular structure sleeved on the outside of the rod body; the middle part of the anchoring section of the rod body is a twisted structure.

[0007] In the technical solution of the embodiment of the present application, a first energy-absorbing structure is provided in the air-facing section of the rod body to withstand the stress released when the high-stress rock mass undergoes large deformation; at the same time, the present application also provides a second energy-absorbing structure in the anchoring section of the rod body, which can utilize the tight extrusion between the rod body and the second energy-absorbing structure to achieve a constant-resistance energy-absorbing effect; on this basis, the present application also provides a third energy-absorbing structure with a constant-resistance energy-absorbing effect by providing the middle part of the anchoring section of the rod body in a twist shape, which can utilize the ductility of the rod body and the variable diameter effect of the twist shape. The multi-stage energy-absorbing effect formed by the first energy-absorbing structure, the second energy-absorbing structure and the third energy-absorbing structure can be used to provide the anchor rod with a stable and efficient support force to meet the support needs of the high-stress rock mass.

[0008] In some embodiments, the base is in a circular ring structure, the outer diameter of the base is larger than the diameter of the anchor hole, and the inner diameter of the base is consistent with the outer diameter of the rod body.

[0009] In this embodiment, the first energy-absorbing structure is located outside the anchor hole, designed to withstand the stress released along the axial direction of the rod body during high stress and large deformation. At the same time, because the inner diameter of the base is consistent with the outer diameter of the rod body, it can also play a certain role in limiting the rod body, helping to keep the rod body centered.

[0010] In some embodiments, the first energy absorbing structure further includes a circular annular boss disposed on the inner side of the base; the outer diameter of the boss is consistent with the aperture of the anchor hole, and the inner diameter of the boss is consistent with the outer diameter of the rod body.

[0011] In this embodiment, the boss in the first energy-absorbing structure can extend into the anchor hole, forming a snap-fit ​​structure with the anchor hole, preventing the first energy-absorbing structure from shifting radially along the rod body, thereby providing greater stability. Furthermore, while maintaining stability, the first energy-absorbing structure can further limit the rod body to keep it centered.

[0012] In some embodiments, a convex strip extending in the axial direction is provided on the outer wall of the rod body, and the second energy absorbing structure is sleeved on the outside of the convex strip; the second energy absorbing structure includes a first segment and a second segment in the axial direction, and a groove matching the convex strip is provided in the first segment, the inner diameter of the first segment is consistent with the outer diameter of the rod body, and the inner diameter of the second segment is consistent with the diameter of the circumference formed by the outer wall of the convex strip.

[0013] In this embodiment, in the first segment, the ridges on the outer wall of the rod can engage with the grooves; by moving the rod body so that the ridges on the outer wall pass through the grooves and enter the second segment, and then rotating the rod body so that the positions of the ridges and the grooves are staggered, the ridges can be brought into contact with the first segment.

[0014] In some embodiments, the first segment is located on a side of the second energy absorbing structure close to the air-facing segment.

[0015] In this embodiment, when the rock mass deforms toward the free surface, under the action of the anchoring agent, a relative movement tendency is generated between the rod body and the second energy absorbing structure, causing the rod body to move toward the free surface relative to the second energy absorbing structure, thereby tightly squeezing the convex strips on the outside of the rod body and the first segment, achieving the effect of constant resistance energy absorption.

[0016] In some embodiments, the second energy absorbing structure includes two groups, which are respectively arranged on both sides of the twist-shaped structure.

[0017] In this embodiment, the two groups of second energy absorbing structures can more effectively improve the constant resistance energy absorbing effect, thereby achieving a better anchoring effect.

[0018] In some embodiments, a limiting structure is further provided on the outer side of the second energy absorbing structure.

[0019] In this embodiment, the provision of the limiting structure is conducive to limiting the position of the rod body in the anchor hole.

[0020] In some embodiments, the limiting structure is annular and is mounted on the outside of the second energy absorbing structure; the inner diameter of the limiting structure is consistent with the outer diameter of the second energy absorbing structure, and the outer diameter of the limiting structure is consistent with the aperture of the anchor hole where the rod body is located.

[0021] In this embodiment, the provision of the limiting structure enables the rod body to be centered in the anchor rod hole, thereby improving the anchoring force of the anchor rod.

[0022] In some embodiments, a tray is further provided between the fastening nut and the first energy absorbing structure.

[0023] In this embodiment, by providing a tray, the contact area between the anchor rod and the rock mass can be effectively increased, thereby improving the supporting effect.

[0024] In some embodiments, the first energy absorbing structure is made of foamed aluminum.

[0025] In this embodiment, the first energy-absorbing structure made of foam aluminum can more effectively withstand the stress released when the high-stress rock mass is deformed, thereby improving the energy-absorbing effect.

[0026] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] To more clearly illustrate the technical solution of this application, the following is a brief introduction to the drawings used in this application. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0028] Figure 1 This is a schematic structural diagram of an energy-absorbing anchor suitable for high-stress rock support in an embodiment of the present application;

[0029] Figure 2 This is a schematic structural diagram of the first energy absorbing structure in an embodiment of the present application;

[0030] Figure 3 This is a schematic structural diagram of the rod body and the convex strips on its outer wall in an embodiment of the present application;

[0031] Figure 4 This is a schematic structural diagram of the second energy absorbing structure in an embodiment of the present application;

[0032] Figure 5 for Figure 3 AA cross-section of

[0033] Figure 6 for Figure 3 BB cross-section diagram.

[0034] Explanation of the accompanying drawings: 1. Rod body; 11. Twisted structure; 12. Raised strip; 2. Fastening nut; 3. Tray; 4. First energy absorbing structure; 41. Base; 42. Boss; 5. Second energy absorbing structure; 51. Groove; 6. Limiting structure; 7. Anchor hole; 8. Anchoring agent. DETAILED DESCRIPTION

[0035] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0037] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0038] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0039] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "length", "upper", "lower", "inside", "outside", "axial", "radial", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present application.

[0040] In order to solve the technical problem that the existing anchor rods are not suitable for high-stress rock support due to poor energy absorption effect, the present application provides an energy-absorbing anchor rod suitable for high-stress rock support. By setting up a multi-stage energy absorption structure to release pressure, a constant resistance effect is achieved, providing the anchor rod with stable support force to meet the support needs of high-stress rock.

[0041] Please refer to Figure 1 , an embodiment of the present application provides an energy-absorbing anchor suitable for high-stress rock support, including a rod body 1; the rod body 1 includes an anchoring section for inserting into an anchor hole 7 of a rock body and an air-facing section located outside the anchor hole 7; a fastening nut 2 and a first energy-absorbing structure 4 are sequentially arranged in the air-facing section of the rod body 1 from the outside to the inside, and the first energy-absorbing structure 4 includes a base 41 sleeved on the outside of the rod body 1; a second energy-absorbing structure 5 is arranged in the anchoring section of the rod body 1, and the second energy-absorbing structure 5 is a tubular structure sleeved on the outside of the rod body 1; the middle part of the anchoring section of the rod body 1 is a twisted structure 11.

[0042] In the technical solution of the embodiment of the present application, a first energy-absorbing structure 4 is provided in the air-facing section of the rod body 1 to withstand the stress released during large deformation of the high-stress rock mass; at the same time, the present application also provides a second energy-absorbing structure 5 in the anchoring section of the rod body 1, which can utilize the tight extrusion between the rod body 1 and the second energy-absorbing structure 5 to achieve a constant-resistance energy-absorbing effect; on this basis, the present application also provides a third energy-absorbing structure with a constant-resistance energy-absorbing effect by providing the middle part of the anchoring section of the rod body 1 in a twist shape, which can utilize the ductility of the rod body 1 and the variable diameter effect of the twist-shaped structure 11, thereby making it a third energy-absorbing structure. The multi-stage energy-absorbing effect formed by the first energy-absorbing structure 4, the second energy-absorbing structure 5 and the third energy-absorbing structure provides the anchor rod with a stable and efficient support force to meet the support requirements of the high-stress rock mass.

[0043] Furthermore, in some embodiments of the present application, the base 41 is an annular structure, the outer diameter of the base 41 is larger than the diameter of the anchor hole 7, and the inner diameter of the base 41 is consistent with the outer diameter of the rod body 1. Figure 2 As shown, the first energy absorbing structure 4 further includes a circular annular boss 42 provided on the inner side of the base 41 ; the outer diameter of the boss 42 is consistent with the aperture of the anchor hole 7 , and the inner diameter of the boss 42 is consistent with the outer diameter of the rod body 1 .

[0044] Through the above-described method, the base 41 of the first energy-absorbing structure 4 is located outside the anchor hole 7, and is used to withstand the stress released along the axial direction of the rod body 1 during high stress and large deformation. The boss 42 of the first energy-absorbing structure 4 can extend into the anchor hole 7, forming a locking structure with the anchor hole 7, preventing the first energy-absorbing structure 4 from shifting radially along the rod body 1, thereby enhancing stability. At the same time, because the inner diameters of the base 41 and the boss 42 are both consistent with the outer diameter of the rod body 1, they can also provide a certain limit to the rod body 1, helping to keep the rod body 1 centered.

[0045] It should be noted that the outer diameter of the rod body 1 described in this application refers to the outer diameter of the main part of the rod body 1, and the main part does not include the twist-shaped structure 11 with a diameter-changing effect.

[0046] In some embodiments of the present application, the first energy-absorbing structure 4 is preferably made of foamed aluminum to more effectively withstand the stress released by high-stress rock deformation and enhance energy absorption. The brand and model of the foamed aluminum can be selected based on actual needs and are not limited to this. Furthermore, the base 41 and boss 42 of the first energy-absorbing structure 4 can be integrally formed or combined, depending on actual needs.

[0047] Further, please refer to Figure 3-6In some embodiments of the present application, a convex strip 12 extending in the axial direction is provided on the outer wall of the rod body 1, and the second energy absorbing structure 5 is sleeved on the outside of the convex strip 12; the second energy absorbing structure 5 includes a first segment and a second segment along the axial direction, and a groove 51 matching the convex strip 12 is provided in the first segment, the inner diameter of the first segment is consistent with the outer diameter of the rod body 1, and the inner diameter of the second segment is consistent with the diameter of the circumference formed by the outer wall of the convex strip 12.

[0048] Furthermore, the first segment is located on a side of the second energy absorbing structure 5 close to the air-facing section, and the first segment and the second segment are of the same length. That is, the upper half of the second energy absorbing structure 5 is the first segment, and the lower half is the second segment.

[0049] In the above embodiment, the first segment is a hollow tubular structure with a groove 51 on the inner wall, and the second segment is a conventional hollow tubular structure. Preferably, the outer diameters of the first segment and the second segment are equal. The first segment and the second segment can be integrally formed or combined.

[0050] With this arrangement, in the first segment, the ridges 12 on the outer wall of the rod body 1 can engage with the grooves 51; by moving the rod body 1 so that the ridges 12 on the outer wall pass through the grooves 51 and enter the second segment, and then rotating the rod body 1 or the second energy-absorbing structure 5 so that the positions of the ridges 12 and the grooves 51 are offset, the ridges 12 and the first segment can be brought into contact. At this time, the friction between the inner wall of the first segment and the rod body 1 can still keep the second energy-absorbing structure 5 and the rod body 1 stable. When the rock mass deforms toward the free surface, under the action of the anchor 8, a relative movement tendency is generated between the rod body 1 and the second energy-absorbing structure 5, causing the rod body 1 to move toward the free surface relative to the second energy-absorbing structure 5, thereby tightly squeezing the ridges 12 on the outer side of the rod body 1 against the first segment, achieving a constant resistance energy absorption effect.

[0051] In the embodiments of the present application, the number and arrangement of the ridges 12 can be selected as needed, and the number and position of the grooves 51 in the first segment can match the ridges 12. For example, in some embodiments of the present application, the ridges 12 can be arranged as two opposing ridges that can be connected to form a "I" shape; the ridges 12 can also be arranged as four ridges evenly distributed along the circumference of the rod body 1, with two opposing ridges connected to form a "X" shape; the ridges 12 can also be arranged as eight ridges evenly distributed along the circumference of the rod body 1, with two opposing ridges connected to form a "M" shape.

[0052] Furthermore, in some embodiments of the present application, the second energy absorbing structure 5 is provided in two groups, and the two groups of energy absorbing structures are respectively provided on both sides of the axial direction of the twist-shaped structure 11. Such a configuration can more effectively improve its constant resistance energy absorption effect, thereby achieving a better anchoring effect.

[0053] Furthermore, in some embodiments of the present application, a limiting structure 6 is further provided on the outside of the second energy absorbing structure 5. The limiting structure 6 is preferably annular and sleeved on the outside of the second energy absorbing structure 5; the inner diameter of the limiting structure 6 is consistent with the outer diameter of the second energy absorbing structure 5, and the outer diameter of the limiting structure 6 is consistent with the aperture of the anchor hole 7 where the rod body 1 is located. Since whether the anchor rod is centered has a great influence on the anchoring force provided by the anchor rod, a poor degree of centering can result in a maximum reduction of the anchoring force by 50%. In the embodiment of the present application, by providing the limiting structure 6, it is beneficial to make the rod body 1 centered in the anchor hole 7. And, based on Figure 2 The cooperation between the first energy absorbing structure 4 and the limiting structure 6 can make the two points form a line, more effectively ensuring that the anchor rod is absolutely centered, thereby providing a stable and efficient anchoring force and enhancing the anchoring effect of the anchor rod.

[0054] Furthermore, in some embodiments of the present application, a tray 3 is further provided between the fastening nut 2 and the first energy absorbing structure 4. This arrangement can effectively increase the contact area between the anchor rod and the rock mass, thereby improving the support effect.

[0055] The working principle of the energy-absorbing anchor rod suitable for high-stress rock support provided in the embodiment of the present application is described in detail below:

[0056] When assembling the energy-absorbing anchor rod, first put the second energy-absorbing structure 5 on the outside of the ridge 12 of the rod body 1, so that the groove 51 in the first segment of the second energy-absorbing structure 5 is engaged with the ridge 12, and then move the rod body 1 or the second energy-absorbing structure 5 along the length direction of the ridge 12 so that the ridge 12 is located in the second segment, and then rotate the rod body 1 or the second energy-absorbing structure 5 so that the positions of the ridge 12 and the groove 51 are staggered, and the ridge 12 forms an abutment state with the first segment, thus completing the assembly of the second energy-absorbing structure 5.

[0057] When installing the energy-absorbing anchor in a high-stress rock mass, it is first necessary to drill an anchor hole 7 in the high-stress rock mass. In some embodiments of the present application, the diameter of the anchor hole 7 is preferably 30 to 40 mm, and the depth is more than 1.5 m. After drilling the anchor hole 7, an anchoring agent 8 is added to the anchor hole 7. The anchoring agent 8 can be a resin anchoring agent 8, a fast-hardening cement mortar anchoring agent 8, or the like. Then, the tip of the rod body 1 is inserted into the anchor hole 7, and the first energy-absorbing structure 4 is placed on the air-facing section of the rod body 1, and the boss 42 in the first energy-absorbing structure 4 is embedded in the anchor hole 7. The rod body 1 is placed in a centered state by the combined action of the limiting structure 6 on the outside of the second energy-absorbing structure 5 and the first energy-absorbing structure 4. Then, the tray 3 and the fastening nut 2 are installed in sequence, and after tightening the fastening nut 2, the installation of the energy-absorbing anchor is completed.

[0058] Through the above method, the first energy-absorbing structure 4 can withstand the stress released when the high-stress rock mass deforms greatly, so as to ensure the restraining force provided by the tray 3 and the fastening nut 2; when the rock mass deforms toward the free surface, the second energy-absorbing structure 5 and the rod body 1 will be tightly squeezed to achieve a constant resistance energy absorption effect; the third energy-absorbing structure can utilize the ductile deformation of the rod body 1 metal and the variable diameter effect of the twist-shaped structure 11 to further improve the constant resistance energy absorption effect. The multi-stage energy-absorbing structure formed by each energy-absorbing structure can achieve a good absorption and compression effect during the deformation and energy release process of the high-stress rock mass, so that the energy-absorbing anchor rod has a stable anchoring effect.

[0059] In summary, the present application provides an energy-absorbing anchor suitable for high-stress rock support, which belongs to the technical field of underground rock support for metal deposits. The energy-absorbing anchor comprises a rod body 1; the rod body 1 comprises an anchoring section for inserting into an anchor hole 7 of a rock mass and an air-facing section located outside the anchor hole 7; a fastening nut 2 and a first energy-absorbing structure 4 are sequentially provided in the air-facing section of the rod body 1 from the outside to the inside, and the first energy-absorbing structure 4 comprises a base 41 sleeved on the outside of the rod body 1; a second energy-absorbing structure 5 is provided in the anchoring section of the rod body 1, and the second energy-absorbing structure 5 is a tubular structure sleeved on the outside of the rod body 1; the middle part of the anchoring section of the rod body 1 is in a twisted structure 11. The energy-absorbing anchor provided in the present application can form a multi-stage energy-absorbing structure by providing the first energy-absorbing structure 4, the second energy-absorbing structure 5 and the twisted structure 11. During the large deformation and energy release process of high-stress rock mass, the multi-stage energy absorption structure can effectively absorb and release pressure, thereby achieving a constant resistance effect and providing stable support force for the anchor rod to meet the support needs of high-stress rock mass.

[0060] It should be noted that the present application is not limited to the above-mentioned embodiments. The above-mentioned embodiments are merely examples, and any embodiments having substantially the same structure and effect as the technical concept within the scope of the present application are all included in the technical scope of the present application. In addition, without departing from the scope of the present application, any other embodiments that can be conceived by those skilled in the art and that combine some of the constituent elements in the embodiments are also included in the scope of the present application.

Claims

1. An energy-absorbing anchor suitable for high-stress rock support, comprising a rod body, characterized in that: The rod body includes an anchoring section for inserting into the anchor hole of the rock mass and an air-facing section located outside the anchor hole; a fastening nut and a first energy-absorbing structure are sequentially provided in the air-facing section of the rod body from the outside to the inside, the first energy-absorbing structure including a base sleeved on the outside of the rod body; a second energy-absorbing structure is provided in the anchoring section of the rod body, the second energy-absorbing structure being a tubular structure sleeved on the outside of the rod body; the middle portion of the anchoring section of the rod body is a twisted structure; The base is an annular structure, the outer diameter of the base is larger than the aperture of the anchor hole, and the inner diameter of the base is consistent with the outer diameter of the rod body; the first energy absorbing structure further includes an annular boss provided on the inner side of the base; the outer diameter of the boss is consistent with the aperture of the anchor hole, and the inner diameter of the boss is consistent with the outer diameter of the rod body; A convex strip extending in the axial direction is provided on the outer wall of the rod body, and the second energy absorbing structure is sleeved on the outside of the convex strip; the second energy absorbing structure includes a first segment and a second segment in the axial direction, and a groove matching the convex strip is provided in the first segment, the inner diameter of the first segment is consistent with the outer diameter of the rod body, and the inner diameter of the second segment is consistent with the diameter of the circumference formed by the outer wall of the convex strip; the first segment is located on the side of the second energy absorbing structure close to the air-facing section.

2. The energy-absorbing anchor suitable for high-stress rock support according to claim 1, characterized in that: The second energy absorbing structure includes two groups, which are respectively arranged on both sides of the twist-shaped structure.

3. The energy-absorbing anchor bolt suitable for high-stress rock support according to claim 1, characterized in that: A limiting structure is also provided on the outer side of the second energy absorbing structure.

4. The energy-absorbing anchor suitable for high-stress rock support according to claim 3, characterized in that: The limiting structure is annular and is sleeved on the outside of the second energy absorbing structure; the inner diameter of the limiting structure is consistent with the outer diameter of the second energy absorbing structure, and the outer diameter of the limiting structure is consistent with the aperture of the anchor hole where the rod body is located.

5. The energy-absorbing anchor suitable for high-stress rock support according to claim 1, characterized in that: A tray is further provided between the fastening nut and the first energy absorbing structure.

6. The energy-absorbing anchor suitable for high-stress rock support according to claim 1, characterized in that: The first energy absorbing structure is made of foamed aluminum.

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