Isolation type anchor rod for preventing coal mine rock burst

Abstract

The invention discloses an isolation type anchor rod for preventing coal mine rock burst, which comprises an anchor rod main body, a tail end limiting assembly and an energy consumption assembly are mounted outside the anchor rod main body, a buffer assembly is mounted at the front end of the anchor rod main body, and the tail end limiting assembly is mounted at the tail end of the anchor rod main body; the buffering assembly is arranged at the front end of the anchor rod body, the limiting assembly and the energy consumption assembly are arranged at the tail end of the anchor rod body, the effect of multi-stage buffering energy absorption is achieved, a cellular board in the buffering assembly provides primary buffering, and a buffering inner core rod in the energy consumption assembly and a fixing plate cooperate to dissipate impact energy; the tail end limiting structure prevents the anchor rod from axial instability under the action of impact load, so that instantaneous load impact caused by rock burst is relieved, the stability and reliability of a supporting system are improved, and the impact resistance of underground supporting is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of risk prevention of rock burst in coal mines, and in particular to an isolation anchor rod for preventing rock burst in coal mines. Background Art

[0002] In deep coal mining, anchor bolts are a key support method for stabilizing the surrounding rock mass and controlling deformation in high-risk areas such as the working face and adjacent laneways near coal pillars. Anchor bolts form an effective anchoring interface with the surrounding rock, tightly connecting various rock components into a single entity and limiting loosening and displacement. However, in complex geological conditions, the effectiveness of anchor bolt support is often affected by a variety of factors.

[0003] Coal-bearing strata often suffer from loose surrounding rock structures and developed joints and fissures, making it difficult for anchor bolts to establish a stable and reliable interface with the surrounding rock. This reduces stress transfer efficiency and causes the anchoring force to decay over time. Furthermore, stratum deformation can be uneven or even sudden. If the anchor bolt is rigid and lacks deformation coordination, it is prone to structural damage when subjected to shear slip or severe impact. This can lead to premature failure of the anchor bolt under stress, manifesting as pullout, bending, or breaking. In severe cases, this can cause localized surrounding rock collapse, leading to re-concentration of stress and undermining the stability of the entire support system. This can increase safety risks at the mining face and even cause catastrophic accidents. Summary of the Invention

[0004] The purpose of the present invention is to provide an isolated anchor rod for preventing rock burst in coal mines, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an isolation anchor rod for preventing impact ground pressure in coal mines, comprising an anchor rod body, a tail end limit assembly and an energy consumption assembly being installed on the outside of the anchor rod body, a buffer assembly being installed at the front end of the anchor rod body, and the tail end limit assembly being installed at the tail end of the anchor rod body.

[0006] The buffer assembly includes a support frame arranged in the surrounding rock, a honeycomb panel is installed inside the support frame, and the front end of the anchor rod body passes through the interior of the honeycomb panel.

[0007] The tail end limiting assembly includes a fastening nut, which is arranged at the tail end of the anchor rod body. One end of the fastening nut is fixedly connected to a positioning plate, and the middle part of the positioning plate is fixedly connected to a limiting first sleeve. The limiting first sleeve is installed with a limiting column through an energy consumption assembly.

[0008] The energy consumption component includes a fixed plate arranged inside the limiting first sleeve, a buffer inner core rod is installed in the middle of the fixed plate through a limiting pin, and the buffer inner core rod is installed inside the limiting column.

[0009] Preferably, the tail end limiting assembly includes a second limiting sleeve sleeved on the anchor rod body and a piezoelectric ceramic sensor and a hydraulic self-locking nut installed on the anchor rod body. The second limiting sleeve is located between the piezoelectric ceramic sensor and the hydraulic self-locking nut, and the hydraulic self-locking nut is located on the tail end of the anchor rod body.

[0010] Preferably, a plurality of bolts are evenly installed inside the fixing plate, and the fixing plate is fastened to the anchor rod body through the plurality of bolts.

[0011] Preferably, the energy consumption component includes a buffer core tube, the buffer core tube is arranged inside the limiting column, and the outside of the buffer inner core rod is threadedly connected to the inside of the buffer core tube.

[0012] Preferably, the energy consumption component includes a damping plate, and the damping plate is fixedly connected between the fixing plate and the first limiting sleeve.

[0013] Preferably, the buffer assembly includes a guide cylinder and a fixing ring, the guide cylinder is arranged at the front end of the anchor rod body, the guide cylinder is fixedly connected to the middle of the honeycomb panel, and the outside of the honeycomb panel is fixedly connected to the inside of the guide cylinder.

[0014] Preferably, threaded holes are symmetrically formed at four corners of the support frame, and anchor screws are connected to the internal threads of the threaded holes.

[0015] Preferably, a rod limiting assembly is installed on the outside of the anchor rod body, and the rod limiting assembly is located between the buffer assembly and the tail end limiting assembly. The rod limiting assembly includes a stop nut, and the stop nut is arranged on the outside of the anchor rod body. The internal thread of the stop nut is connected to multiple limit nuts, and an elastic washer is arranged between the stop nut and the anchor rod body.

[0016] Preferably, the rod body limiting assembly includes a buffer mounting seat, the buffer mounting seat is installed on the outside of the anchor rod body, the interior of the buffer mounting seat is fixedly connected to a limiting block, and the limiting block is sleeved on the outside of the anchor rod body.

[0017] Preferably, the energy consumption component includes an inner tube arranged inside the buffer inner core rod, and an arc plate is provided between the inner tube and the buffer inner core rod.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention achieves the effect of multi-stage buffering and energy absorption by arranging a buffer component at the front end of the anchor rod body and a limit component and an energy consumption component at the tail end. The honeycomb panel in the buffer component provides primary buffering, and the buffer inner core rod and the fixed plate in the energy consumption component cooperate to dissipate impact energy. The tail end limit structure prevents the anchor rod from axially losing stability under the action of impact load, thereby alleviating the instantaneous load impact caused by impact ground pressure, improving the stability and reliability of the support system, and enhancing the impact resistance of underground support. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of an isolated anchor bolt for preventing rock burst in coal mines according to an embodiment of the present invention; Figure 2 An exploded view of an isolated anchor bolt for preventing rock burst in coal mines according to an embodiment of the present invention; Figure 3 This is a schematic structural diagram of a buffer base in an isolated anchor bolt for preventing rock burst in coal mines according to an embodiment of the present invention; Figure 4 A perspective view of a buffer base in an isolated anchor bolt for preventing rock burst in coal mines according to an embodiment of the present invention; Figure 5 An exploded view of a buffer base in an isolated anchor bolt for preventing rock burst in coal mines according to an embodiment of the present invention; Figure 6 An exploded view of a buffer inner core tube in an isolated anchor bolt for preventing rock burst in coal mines according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the internal structure of a buffer inner core tube in an isolated anchor bolt for preventing rock burst in coal mines according to an embodiment of the present invention.

[0020] As shown in the figure: 1. Anchor rod body; 10. Rod limit assembly; 11. Retraction nut; 12. Elastic washer; 13. Limit nut; 14. Limit block; 15. Buffer mounting seat; 20. Buffer assembly; 21. Support frame; 22. Guide cylinder; 23. Fixing ring; 24. Honeycomb panel; 25. Anchor screw; 26. Threaded hole; 30. Tail end limit assembly; 31. Fastening nut; 32. Positioning plate; 33. First limit sleeve; 34. Limiting column; 35. Piezoelectric ceramic sensor; 36. Second limit sleeve; 37. Hydraulic self-locking nut; 40. Energy consumption component; 41. Fixed plate; 42. Damping plate; 43. Limit pin; 44. Buffer inner core rod; 45. Bolt; 46. Buffer core tube; 47. Inner tube; 48. Arc plate. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1 An embodiment of the present invention provides an isolated anchor rod for preventing impact ground pressure in coal mines, including an isolated anchor rod for preventing impact ground pressure in coal mines, including an anchor rod body 1, a tail end limit component 30 and an energy consumption component 40 are installed on the outside of the anchor rod body 1, a buffer component 20 is installed at the front end of the anchor rod body 1, and the tail end limit component 30 is installed at the tail end of the anchor rod body 1.

[0023] According to the above technical solution, the anchor rod body 1 serves as the main load-bearing component, which is connected in sequence to the buffer component 20, the tail end limit component 30 and the energy consumption component 40. The functional components are arranged around the axis of the anchor rod to form a coordinated response path under the action of the impact load, so that the energy is released step by step and the load propagation process is controlled.

[0024] like Figure 1 and Figure 2 As shown, the buffer assembly 20 includes a support frame 21 set in the surrounding rock, a honeycomb panel 24 is installed inside the support frame 21, and the front end of the anchor body 1 passes through the inside of the honeycomb panel 24.

[0025] According to the above technical solution, the front end of the anchor rod passes through the honeycomb panel 24 inside the support frame 21. When an impact occurs, the honeycomb panel 24 undergoes controllable crushing deformation, absorbs the initial impact energy, and transfers the residual load to the anchor rod body 1 through the support frame 21, thereby dispersing stress concentration.

[0026] like Figure 1 、 Figure 2 and Figure 3 As shown, the tail end limit assembly 30 includes a fastening nut 31, which is arranged at the tail end of the anchor rod body 1. One end of the fastening nut 31 is fixedly connected to a positioning plate 32, and the middle part of the positioning plate 32 is fixedly connected to a limiting first sleeve 33. The limiting first sleeve 33 is installed with a limiting column 34 through the energy consumption assembly 40.

[0027] According to the above technical solution, the tail end limit assembly 30 is connected to the tail end of the anchor rod through the fastening nut 31, and an axial limit structure is established through the positioning plate 32 and the limiting first sleeve 33. The tail end limit assembly 30 can play the dual role of fixing the tail end and guiding positioning to prevent structural displacement or rotational instability during the impact process.

[0028] like Figure 3 and Figure 4 and Figure 5 As shown, the energy consumption component 40 includes a fixed plate 41 arranged inside the first limiting sleeve 33, and a buffer inner core rod 44 is installed in the middle of the fixed plate 41 through a limiting pin 43, and the buffer inner core rod 44 is installed inside the limiting column 34.

[0029] According to the above technical solution, the energy consumption component 40 is arranged inside the first limiting sleeve 33, the fixed plate 41 provides a support platform, and the buffer inner core rod 44 is embedded in the limiting column 34 after being installed through the limiting pin 43. Under the action of the impact load, the buffer inner core rod 44 produces plastic deformation or compression sliding along the axial direction, thereby achieving further dissipation of the impact energy in the middle and rear sections and slowing down the force transmission speed of the structure.

[0030] In one embodiment, Figure 3 and Figure 4 As shown, the tail end limiting assembly 30 includes a second limiting sleeve 36 sleeved on the anchor rod body 1 and a piezoelectric ceramic sensor 35 and a hydraulic self-locking nut 37 installed on the anchor rod body 1. The second limiting sleeve 36 is located between the piezoelectric ceramic sensor 35 and the hydraulic self-locking nut 37, and the hydraulic self-locking nut 37 is located on the tail end of the anchor rod body 1.

[0031] According to the above technical solution, when the anchor rod body 1 undergoes axial displacement under the action of impact ground pressure, the limiting second sleeve 36 slips relative to the piezoelectric ceramic sensor 35 after exceeding the set displacement threshold. The piezoelectric ceramic sensor 35 detects the displacement change in real time and outputs an electrical signal to control the micromotor adjustment structure response; when the limiting second sleeve 36 slides further and hits the hydraulic self-locking nut 37, the hydraulic self-locking mechanism is triggered to lock the tail of the anchor rod, forming an extreme limiting protection to prevent the overall instability or fall out of the anchor rod, thereby ensuring the safety and reliability of the tail end structure.

[0032] In one embodiment, specifically, a plurality of bolts 45 are evenly installed inside the fixing plate 41 , and the fixing plate 41 is fastened to the anchor rod body 1 through the plurality of bolts 45 .

[0033] According to the above technical solution, the fixing plate 41 is connected to the anchor rod body 1 through multiple bolts 45 to achieve a tight and stable fit between the components, ensuring that the energy consumption component 40 will not loosen or shift under load, and ensuring that the energy dissipation path is reliable.

[0034] In one embodiment, specifically, the energy consumption component 40 includes a buffer core tube 46 , which is disposed inside the limiting column 34 , and the outside of the buffer inner core rod 44 is threadedly connected to the inside of the buffer core tube 46 .

[0035] According to the above technical solution, by arranging a buffer core tube 46 inside the limit column 34 and forming a sleeve-type structure with a threaded connection between it and the buffer inner core rod 44, the buffer core tube 46 can not only provide axial guidance and external support for the buffer inner core rod 44 under the action of impact load, but also form constraint control over its deformation process, thereby optimizing the energy transfer path and enhancing the overall energy consumption capacity and plastic deformation efficiency of the system.

[0036] In one embodiment, specifically, the energy consumption component 40 includes a damping plate 42 , and the damping plate 42 is fixedly connected between the fixing plate 41 and the first limiting sleeve 33 .

[0037] According to the above technical solution, the damping plate 42 is arranged between the fixed plate 41 and the limiting first sleeve 33, and bears the load transmitted by the buffer inner core rod 44. It produces a damping effect under compression or shear state, further enhancing the nonlinear response capability of the energy consumption path.

[0038] Furthermore, each honeycomb structure of the honeycomb panel 24 is constructed as a hexagonal structure. The honeycomb panel 24 is arranged in a hexagonal honeycomb structure, has uniform force and good crushing performance, can achieve stable deformation during impact, and improve the energy absorption capacity and reusability of the buffer component 20.

[0039] In one embodiment, specifically, the buffer assembly 20 includes a guide cylinder 22 and a fixing ring 23. The guide cylinder 22 is arranged at the front end of the anchor rod body 1. The guide cylinder 22 is fixedly connected to the middle of the honeycomb panel 24. The outside of the honeycomb panel 24 is fixedly connected to the inside of the guide cylinder 22.

[0040] According to the above technical solution, the guide tube 22 is arranged at the front end of the anchor rod and fixedly connected to the middle of the honeycomb panel 24, and cooperates with the fixing ring 23 to axially constrain and center the honeycomb panel 24 to ensure that the anchor rod body 1 penetrates in a consistent direction and the honeycomb panel 24 is evenly stressed.

[0041] In one embodiment, specifically, threaded holes 26 are symmetrically formed at four corners of the support frame 21 , and the internal threads of the threaded holes 26 are connected with anchor screws 25 .

[0042] According to the above technical solution, threaded holes 26 are opened at the four corners of the support frame 21, and are fixedly connected to the surrounding rock through threaded anchor screws 25, thereby ensuring the stability of the entire buffer assembly 20 and preventing it from loosening or deflecting under impact conditions.

[0043] In one embodiment, specifically, a rod limiting assembly 10 is installed on the outside of the anchor rod body 1, and the rod limiting assembly 10 is located between the buffer assembly 20 and the tail end limiting assembly 30. The rod limiting assembly 10 includes a stop nut 11, and the stop nut 11 is arranged on the outside of the anchor rod body 1. The internal thread of the stop nut 11 is connected to multiple limit nuts 13, and an elastic washer 12 is arranged between the stop nut 11 and the anchor rod body 1.

[0044] According to the above technical solution, the rod body limiting assembly 10 is arranged in the middle of the anchor rod, and a pre-tightening limiting structure is formed by the stop nut 11, multiple limiting nuts 13 and elastic washers 12. When the anchor rod body 1 produces axial displacement, the limiting structure can play a buffering and restraining role to prevent the anchor rod from axial loosening.

[0045] In one embodiment, specifically, the rod body limiting assembly 10 includes a buffer mounting seat 15, which is mounted on the outside of the anchor rod body 1, and the interior of the buffer mounting seat 15 is fixedly connected to a limiting block 14, which is sleeved on the outside of the anchor rod body 1.

[0046] According to the above technical solution, the rod body limiting assembly 10 is arranged in the middle of the anchor rod, and a pre-tightening limiting structure is formed by the stop nut 11, multiple limiting nuts 13 and elastic washers 12. When the anchor rod produces axial displacement, the limiting structure can play a buffering and restraining role to prevent the anchor rod from axial loosening.

[0047] In one embodiment, Figure 6 and Figure 7 As shown, the energy consumption component 40 includes an inner tube 47 arranged inside the buffer inner core rod 44, and an arc plate 48 is arranged between the inner tube 47 and the buffer inner core rod 44.

[0048] According to the above technical solution, when the impact load is transmitted to the middle energy consumption component 40 along the axis of the anchor rod body 1, the inner tube 47 undergoes superelastic deformation after being impacted, and at the same time, the arc plate 48 produces friction slip and flexible bending deformation on the conical contact surface, forming a dual energy consumption path. This structure utilizes the shape memory alloy characteristics of the inner tube 47 and the flexible energy consumption mechanism of the arc plate 48 to work together to achieve segmented absorption and graded relief of impact energy, reduce the concentrated transmission of impact energy to the tail end, and enhance the buffering capacity and ductility control performance of the entire anchor rod system.

[0049] Furthermore, under the condition of continuous impact loading, the curved plate 48 undergoes radial bending deformation of the plate surface under the action of boundary constraints, generating an elastic or yield response, achieving energy dissipation and coordinated structural deformation. When an impact occurs, if the opening of the curved plate 48 faces downward, the two wings are more likely to droop and slide in accordance with gravity, promoting bending and friction deformation, and improving energy absorption efficiency.

[0050] Furthermore, the inner tube 47 is made of a nickel-titanium shape memory alloy tube, and the buffer inner core tube 44 is made of a spring steel sleeve. The inner tube 47 undergoes superelastic deformation under impact, and the buffer inner core rod 44 achieves synergistic energy consumption through plastic deformation.

[0051] Furthermore, the buffer mounting seat 15 and the first limiting sleeve 33 are coated with an epoxy resin coating on the outside, which can provide long-lasting protection in the wet and highly corrosive environment underground and extend the service life of the components.

[0052] In summary: The buffer component 20 is arranged at the front end of the anchor rod body 1. When subjected to an impact load, the honeycomb panel 24 can undergo local crushing deformation, thereby absorbing the initial impact energy and slowing down the sudden load change transmitted to the body, avoiding instantaneous fracture or damage of the anchor rod body 1 due to excessive rigidity, thereby enhancing the safety performance of the anchor rod body 1 in a complex stress environment.

[0053] The tail end limit assembly 30 is located at the end of the anchor rod body 1, and is used to provide fixed support and structural guidance for the tail end of the anchor rod body 1, prevent the anchor rod body 1 from axial slippage or tail shaking under the action of impact load, enhance the stability of the tail connection, and improve the anti-disturbance ability of the support structure under impact load.

[0054] The energy consumption component 40 is installed inside the first limiting sleeve 33. The buffer inner core rod 44 can undergo controlled deformation under axial impact. The limiting pin 43 is used to limit its stroke. The damping plate 42 further absorbs energy, thereby extending the impact response time and reducing the peak load. It effectively overcomes the lack of energy dissipation mechanism and insufficient rigidity of the load-bearing path in the traditional anchor rod structure, reduces the risk of pull-out or breakage, enhances the adaptability of the anchor rod body 1 to sudden loads, and reduces the risk of breakage or pull-out.

[0055] The rod body limiting assembly 10 is arranged between the buffer assembly 20 and the tail end limiting assembly 30, and is used to adjust the axial preload of the anchor rod body 1 and limit the displacement during operation, thereby improving the stability of the anchor rod body 1 under micro-deformation conditions of the surrounding rock and reducing the risk of loosening or fatigue failure caused by long-term load accumulation.

[0056] In addition, an epoxy resin anti-corrosion layer is coated on the outer surface of the buffer mounting seat 15 and the limiting first sleeve 33, which can effectively isolate moist gas and mineral corrosive media, extend the service life of the components, and improve their adaptability and durability in the high humidity and high corrosion environment underground.

[0057] Parts not described in the present invention are the same as those in the prior art or can be implemented using the prior art. Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An isolated anchor bolt for preventing rock burst in coal mines, characterized in that: It comprises an anchor rod body (1), a tail end limit assembly (30) and an energy consumption assembly (40) are installed on the outside of the anchor rod body (1), a buffer assembly (20) is installed at the front end of the anchor rod body (1), and the tail end limit assembly (30) is installed at the tail end of the anchor rod body (1); The buffer assembly (20) comprises a support frame (21) arranged in the surrounding rock, a honeycomb panel (24) is installed inside the support frame (21), and the front end of the anchor rod body (1) passes through the interior of the honeycomb panel (24); The tail end limiting assembly (30) includes a fastening nut (31), the fastening nut (31) is arranged at the tail end of the anchor rod body (1), one end of the fastening nut (31) is fixedly connected to a positioning plate (32), the middle part of the positioning plate (32) is fixedly connected to a limiting first sleeve (33), and the limiting first sleeve (33) is installed with a limiting column (34) through an energy consumption assembly (40); The energy consumption component (40) includes a fixed plate (41) arranged inside the first limiting sleeve (33), a buffer inner core rod (44) is installed in the middle of the fixed plate (41) through a limiting pin (43), and the buffer inner core rod (44) is installed inside the limiting column (34).

2. The isolated anchor bolt for preventing rock burst in coal mines according to claim 1, characterized in that: The tail end limiting assembly (30) comprises a second limiting sleeve (36) sleeved on the anchor rod body (1), a piezoelectric ceramic sensor (35) and a hydraulic self-locking nut (37) mounted on the anchor rod body (1), wherein the second limiting sleeve (36) is located between the piezoelectric ceramic sensor (35) and the hydraulic self-locking nut (37), and the hydraulic self-locking nut (37) is located on the tail end of the anchor rod body (1).

3. The isolated anchor bolt for preventing rock burst in coal mines according to claim 1, characterized in that: A plurality of bolts (45) are evenly installed inside the fixing plate (41), and the fixing plate (41) is fastened to the anchor rod body (1) via the plurality of bolts (45).

4. The isolated anchor bolt for preventing rock burst in coal mines according to claim 1, characterized in that: The energy consumption component (40) comprises a buffer core tube (46), the buffer core tube (46) is arranged inside the limiting column (34), and the outside of the buffer inner core rod (44) is threadedly connected to the inside of the buffer core tube (46).

5. The isolated anchor bolt for preventing rock burst in coal mines according to claim 1, characterized in that: The energy consumption component (40) comprises a damping plate (42), and the damping plate (42) is fixedly connected between the fixing plate (41) and the first limiting sleeve (33).

6. The isolated anchor bolt for preventing rock burst in coal mines according to claim 1, characterized in that: The buffer assembly (20) comprises a guide cylinder (22) and a fixing ring (23), wherein the guide cylinder (22) is arranged at the front end of the anchor rod body (1), the guide cylinder (22) is fixedly connected to the middle of the honeycomb panel (24), and the outside of the honeycomb panel (24) is fixedly connected to the inside of the guide cylinder (22).

7. The isolated anchor bolt for preventing rock burst in coal mines according to claim 1, characterized in that: The four corners of the support frame (21) are symmetrically provided with threaded holes (26), and the internal threads of the threaded holes (26) are connected to anchor screws (25).

8. The isolated anchor bolt for preventing rock burst in coal mines according to claim 1, characterized in that: A rod limiting assembly (10) is installed on the outside of the anchor rod body (1), and the rod limiting assembly (10) is located between the buffer assembly (20) and the tail end limiting assembly (30). The rod limiting assembly (10) includes a stop nut (11), which is arranged on the outside of the anchor rod body (1). The internal thread of the stop nut (11) is connected to multiple limiting nuts (13), and an elastic washer (12) is arranged between the stop nut (11) and the anchor rod body (1).

9. The isolated anchor bolt for preventing rock burst in coal mines according to claim 8, characterized in that: The rod body limiting assembly (10) comprises a buffer mounting seat (15), the buffer mounting seat (15) is mounted on the outside of the anchor rod body (1), the interior of the buffer mounting seat (15) is fixedly connected to a limiting block (14), and the limiting block (14) is sleeved on the outside of the anchor rod body (1).

10. The isolated anchor bolt for preventing rock burst in coal mines according to claim 1, characterized in that: The energy consumption component (40) comprises an inner tube (47) arranged inside the buffer inner core rod (44), and an arc-shaped plate (48) is provided between the inner tube (47) and the buffer inner core rod (44).

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