A microseismic based roadway support device

Abstract

The utility model discloses a roadway supporting device based on microseism relates to roadway supporting device technical field, the utility model discloses two support frames, two the bottom of support frame all is penetrated with two expansion bolts, four expansion bolts all are with corresponding support frame screw connection. The utility model discloses a buffer assembly, specifically is when roadway microseism, the vibration energy is first acted on the rubber pad of impact plate outside, and the rubber pad absorbs part energy with the help of self elastic deformation, and the remaining energy is transmitted to the impact plate and drives the power pole to move, and the power pole is smoothly slid under the orientation cylinder limit, and the spring of its outer wall is extruded compression deformation, further absorbs the vibration energy, and the vibration energy that gradually disperses microseism is transmitted to the supporting plate through the preliminary buffering of rubber pad and the secondary energy absorption of spring no.

Description

Technical Field

[0001] This utility model belongs to the technical field of roadway support devices, and in particular relates to a roadway support device based on micro-vibration. Background Technology

[0002] In deep resource mining and other projects, the surrounding rock of the tunnel is often affected by the superposition of mining stress and tectonic stress, which can easily trigger micro-seismic events. Although the energy release scale of micro-seismic events is small, it can change the stress state of the surrounding rock, expand the plastic zone, and continuously impact the tunnel support system.

[0003] However, existing roadway support devices are unable to effectively disperse the impact energy during micro-earthquakes, causing the impact generated by micro-earthquakes to act directly on the support structure. This leads to a sudden increase in the axial force of the anchor bolts and stress concentration in the supports. This not only exacerbates the deformation of the roadway sides and the subsidence of the roof, but also causes cracks, loosening, or even overall failure of the support structure, making it impossible to maintain the integrity of the surrounding rock. In severe cases, it may induce larger-scale dynamic disasters and threaten construction safety. Utility Model Content

[0004] The purpose of this invention is to provide a roadway support device based on micro-vibration. By setting up a buffer component, specifically, when a micro-vibration occurs in the roadway, the vibration energy first acts on the rubber pad on the outside of the impact plate. The rubber pad absorbs part of the energy through its own elastic deformation, and the remaining energy is transferred to the impact plate and drives the power rod to move. The power rod slides smoothly under the limit of the guide cylinder, and the spring on its outer wall is compressed and deformed, further absorbing the vibration energy. Through the initial buffering of the rubber pad and the secondary energy absorption of the spring, the vibration energy transmitted from the micro-vibration to the support plate is gradually dispersed, reducing the vibration intensity directly borne by the support plate, reducing the possibility of damage to the support plate due to severe vibration, and providing a stable foundation for subsequent reinforcement actions. This solves the problem that existing roadway support devices are unable to effectively disperse the impact energy when micro-vibrations occur.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a roadway support device based on micro-vibration, comprising two support frames, each with two expansion bolts penetrating its bottom, and four expansion bolts threadedly connected to the corresponding support frame. Support plates are fixedly connected to the top of the two support frames. The device also includes a support mechanism, comprising several groups of support mechanisms, each group mounted on the support plate. Each support mechanism includes an impact plate, with a rubber pad fixedly connected to the side of the impact plate away from the support plate. The rubber pad is made of nitrile rubber and is fixedly connected to the impact plate by adhesive bonding. The side of the rubber pad away from the impact plate is treated with an anti-slip coating.

[0007] Furthermore, the support mechanism also includes a buffer assembly disposed on the support plate, which is used to disperse the vibration transmitted to the support plate during micro-vibrations in the roadway; and a reinforcement assembly disposed on the support plate, which is used to reinforce the support effect of the support plate.

[0008] Furthermore, the buffer assembly includes a mounting groove formed on the side of the support plate near the impact plate. A guide cylinder is fixedly connected to the inner wall of the mounting groove. A power rod passes through the guide cylinder and is slidably connected to the guide cylinder. The power rod passes through the support plate and is slidably connected to the support plate. One end of the power rod near the rubber pad is fixedly connected to the impact plate. A spring is sleeved on the outer wall of the power rod. The power rod is fixedly connected to the impact plate by welding and is limited and guided by the guide cylinder.

[0009] Furthermore, the reinforcement component includes two guide plates fixedly connected to the side of the support plate away from the guide cylinder, a transmission block one slidably connected between the two guide plates, and a transmission block two fixedly connected to the end of the power rod away from the impact plate. The transmission block one is designed as an isosceles trapezoid, and a reserved sliding groove is provided on the side of the transmission block one near the corresponding guide plate. The sides of the two guide plates near the guide cylinder extend into the reserved sliding groove on the guide cylinder and are slidably connected to the corresponding reserved sliding groove.

[0010] Furthermore, a connecting groove is provided on the side of the transmission block one that contacts the transmission block two, and a connecting block is fixedly connected to the side of the transmission block two that contacts the transmission block one. The side of the connecting block away from the transmission block two extends into the interior of the connecting groove and is slidably connected to the connecting groove. The connecting block is fixedly connected to the power rod by welding, and the connecting block is designed in a T-shape, which is adapted to the inner wall of the connecting groove.

[0011] Furthermore, a reinforcing anchor rod is inserted through the support plate, the reinforcing anchor rod is slidably connected to the support plate, a support pad is fixedly connected to the outer wall of the reinforcing anchor rod, a spring is sleeved on the outer wall of the reinforcing anchor rod, and the support pad is fixedly connected to the reinforcing anchor rod by welding. The overall shape is designed as a cylinder, and the edges are rounded.

[0012] This utility model has the following beneficial effects:

[0013] 1. This utility model incorporates a buffer component. Specifically, when a micro-vibration occurs in the tunnel, the vibration energy first acts on the rubber pad on the outside of the impact plate. The rubber pad absorbs part of the energy through its elastic deformation, and the remaining energy is transferred to the impact plate, driving the power rod to move. The power rod slides smoothly under the limit of the guide cylinder, and the spring on its outer wall is compressed and deformed, further absorbing the vibration energy. Through the initial buffering of the rubber pad and the secondary energy absorption of the spring, the vibration energy transmitted from the micro-vibration to the support plate is gradually dispersed, reducing the vibration intensity directly borne by the support plate, reducing the possibility of damage to the support plate due to severe vibration, and providing a stable foundation for subsequent reinforcement actions.

[0014] 2. This utility model, through the setting of a reinforcement component, specifically, when the power rod moves, it drives the transmission block two to move synchronously. The chamfered inclined surface of the transmission block two presses against the corresponding inclined surface of the transmission block one. Under the limitation of the guide plate, the transmission block one slides away from the power rod, and its other inclined surface pushes the reinforcement anchor rod to move into the surrounding rock, and the conical tip smoothly penetrates into the rock mass. At the same time, the support pad moves with the reinforcement anchor rod and presses against the spring two. The spring two is compressed and stores elastic potential energy and provides continuous prestress. Through the deep anchoring of the reinforcement anchor rod and the prestress of the spring two, the connection stability between the support plate and the surrounding rock is enhanced, the support plate's support effect on the roadway is improved when micro-vibrations occur in the roadway, and the stability of the roadway structure is maintained.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the support plate of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the guide cylinder of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the guide plate of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the transmission block of this utility model.

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Support frame; 11. Expansion bolt; 12. Support plate; 2. Support mechanism; 21. Impact plate; 211. Rubber pad; 22. Buffer assembly; 221. Mounting groove; 222. Guide cylinder; 223. Power rod; 224. Spring one; 23. Reinforcing assembly; 231. Guide plate; 232. Transmission block one; 233. Transmission block two; 234. Connecting groove; 235. Connecting block; 236. Reinforcing anchor; 237. Support pad; 238. Spring two. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 As shown, this utility model is a roadway support device based on micro-vibration, including two support frames 1, each with two expansion bolts 11 penetrating its bottom, and four expansion bolts 11 threadedly connected to the corresponding support frame 1. Support plates 12 are fixedly connected to the top of the two support frames 1. It also includes a support mechanism 2, which is provided in several groups, all of which are mounted on the support plate 12. Each support mechanism 2 includes an impact plate 21, with the side of the impact plate 21 away from the support plate 12 fixedly connected to... There is a rubber pad 211, which is made of nitrile rubber and is fixedly connected to the impact plate 21 by adhesive. At the same time, the side of the rubber pad 211 away from the impact plate 21 is treated with anti-slip treatment. The support mechanism 2 also includes a buffer component 22, which is set on the support plate 12 and is used to disperse the vibration transmitted to the support plate 12 during micro-vibration. The reinforcement component 23 is set on the support plate 12 and is used to reinforce the support effect of the support plate 12.

[0026] The buffer assembly 22 includes a mounting groove 221 formed on the side of the support plate 12 near the impact plate 21. A guide cylinder 222 is fixedly connected to the inner wall of the mounting groove 221. A power rod 223 passes through the guide cylinder 222 and is slidably connected to the guide cylinder 222. The power rod 223 passes through the support plate 12 and is slidably connected to the support plate 12. One end of the power rod 223 near the rubber pad 211 is fixedly connected to the impact plate 21. A spring 224 is sleeved on the outer wall of the power rod 223. One end of the spring 224 is fixedly connected to the impact plate 21, and the other end is fixedly connected to the end of the guide cylinder 222 near the impact plate 21. By setting the buffer assembly 22, specifically in the alley... When a micro-vibration occurs, the vibration energy first acts on the rubber pad 211 on the outside of the impact plate 21. The rubber pad 211 absorbs part of the energy through its own elastic deformation, and the remaining energy is transferred to the impact plate 21 and drives the power rod 223 to move. The power rod 223 slides smoothly under the limit of the guide cylinder 222. The spring 224 on its outer wall is compressed and deformed, further absorbing the vibration energy. Through the initial buffering of the rubber pad 211 and the secondary energy absorption of the spring 224, the vibration energy transmitted from the micro-vibration to the support plate 12 is gradually dispersed, reducing the vibration intensity directly borne by the support plate 12, reducing the possibility of damage to the support plate 12 due to severe vibration, and providing a stable foundation for subsequent reinforcement actions.

[0027] The reinforcement component 23 includes two guide plates 231 fixedly connected to the side of the support plate 12 away from the guide cylinder 222. A transmission block 232 is slidably connected between the two guide plates 231. A transmission block 233 is fixedly connected to the end of the power rod 223 away from the impact plate 21. The transmission block 233 is fixedly connected to the power rod 223 by welding, and the bottom of the transmission block 233 is chamfered, with its chamfered bevel contacting the corresponding bevel on the transmission block 232. A connecting groove 234 is provided on the side of transmission block 232 that contacts transmission block 233. A connecting block 235 is fixedly connected to the side of transmission block 233 that contacts transmission block 232. The side of connecting block 235 away from transmission block 233 extends into the connecting groove 234 and is slidably connected to the connecting groove 234. A reinforcing anchor rod 236 passes through the support plate 12. The reinforcing anchor rod 236 is slidably connected to the support plate 12. A support pad 237 is fixedly connected to the outer wall of the reinforcing anchor rod 236. An anchor rod 236 has a spring 238 fitted on its outer wall. One end of the spring 238 is fixedly connected to the side of the support plate 12 away from the mounting groove 221, and the other end is fixedly connected to the support pad 237. By setting the reinforcement component 23, specifically, when the power rod 223 moves, it drives the transmission block 233 to move synchronously. The chamfered surface of the transmission block 233 presses against the corresponding inclined surface of the transmission block 232. Under the limitation of the guide plate 231, the transmission block 232 slides away from the power rod 223. On the other side, the inclined surface pushes the reinforced anchor 236 into the surrounding rock, and the conical tip smoothly penetrates into the rock mass. At the same time, the support pad 237 moves with the anchor and compresses the second spring 238. The second spring 238 is compressed and stores elastic potential energy and provides continuous prestress. Through the deep anchoring of the reinforced anchor 236 and the prestress of the second spring 238, the connection stability between the support plate 12 and the surrounding rock is enhanced, the support effect of the support plate 12 on the roadway when micro-vibration occurs in the roadway is improved, and the stability of the roadway structure is maintained.

[0028] A specific application of this embodiment is as follows: When using this device, the tunnel rock wall is first cleaned, and then holes are drilled at the positions corresponding to the bolt holes at the bottom of the support frame 1. Four expansion bolts 11 are inserted through the bottom of the two support frames 1 respectively, screwed into the drilled holes in the rock wall and tightened, so that the two support frames 1 are fixed to the tunnel rock wall. At this time, the support plate 12 at the top of the support frame 1 is in contact with the inner wall of the tunnel. When the tunnel experiences micro-vibration, the vibration energy first acts on the rubber pad 211 on the outside of the impact plate 21. The nitrile rubber pad 211 enhances the adhesion between the impact plate 21 and the surrounding rock surface. It will first absorb some of the vibration energy through its own elastic deformation, and at the same time transfer the remaining energy to the impact plate 21. Under the action of energy, the impact plate 21 moves towards the support plate 12, thereby driving the power rod 223 to move synchronously. Under the limiting and guiding action of the guide cylinder 222, the power rod 223 slides smoothly in the vertical direction. At this time, the spring 224 sleeved on the outer wall of the power rod 223 is compressed and deformed by the pressure of the impact plate 21, further absorbing the vibration energy generated by the micro-vibration, realizing the buffering and dispersion of the vibration, and preventing the support plate 12 from being directly damaged by the violent vibration.

[0029] As the power rod 223 moves toward the support plate 12, its end away from the impact plate 21 will drive the transmission block 233 to move synchronously. Since the bottom of the transmission block 233 is chamfered, and the chamfered surface is in contact with the corresponding inclined surface on the transmission block 232, as the transmission block 233 moves, its inclined surface will exert a squeezing force on the inclined surface of the transmission block 232. At this time, under the limiting action of the two L-shaped guide plates 231, the transmission block 232 moves away from the power rod 223 along the extension direction of the guide plates 231. While sliding on one side, the connecting block 235 on the transmission block 232 slides synchronously within the connecting groove 234 of the transmission block 232, ensuring the transmission stability between the two and preventing offset or jamming. This also limits the movement of the transmission block 232. During the sliding process, the inclined surface of the transmission block 232 on the side away from the transmission block 233 will exert a thrust on the hemispherical end of the reinforcing anchor rod 236. Since the reinforcing anchor rod 236 maintains a sliding connection with the support plate 12, under the action of the thrust, the reinforcing anchor rod 236 will move into the surrounding rock of the roadway. As the anchor bolt 236 moves, its conical tip can smoothly penetrate the rock mass and penetrate deep into the surrounding rock, thereby enhancing the anchoring support effect on the support plate 12. At the same time, the support pad 237 on the outer wall of the reinforcing anchor bolt 236 moves synchronously with the anchor bolt, compressing the spring 238 sleeved on the anchor bolt. The spring 238 undergoes compression deformation and stores elastic potential energy, providing continuous prestress for the reinforcing anchor bolt 236, further improving the anchoring firmness. After the micro-vibration ends, the elastic potential energy stored in the spring 224 and the spring 238 begins to be released. The spring 224 pushes the impact... The impact plate 21 and the power rod 223 reset in the direction away from the support plate 12. The power rod 223 drives the transmission block 233 back to its initial position. The spring 238 pushes the support pad 237 and the reinforcing anchor 236 to reset in the direction away from the surrounding rock. The reinforcing anchor 236 then pushes the transmission block 232 to slide back to its initial position. The entire device returns to its initial state and waits to deal with the next micro-vibration. This achieves a rapid response to micro-vibrations, buffering and dispersing some of the vibration energy while reinforcing the roadway in a timely manner, effectively ensuring the stability and safety of the roadway.

[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A roadway support device based on micro-vibration, comprising two support frames (1), each of the two support frames (1) having two expansion bolts (11) passing through its bottom, all four expansion bolts (11) being threadedly connected to the corresponding support frame (1), and a support plate (12) being fixedly connected to the top of the two support frames (1), characterized in that, Also includes: Support mechanism (2), the support mechanism (2) is provided in several groups, and the several groups of support mechanisms (2) are all set on the support plate (12). The support mechanism (2) includes an impact plate (21), and a rubber pad (211) is fixedly connected to the side of the impact plate (21) away from the support plate (12). The rubber pad (211) is made of nitrile rubber and is fixedly connected to the impact plate (21) by adhesive. At the same time, the side of the rubber pad (211) away from the impact plate (21) is treated with anti-slip treatment.

2. The roadway support device based on micro-vibration according to claim 1, characterized in that, The support mechanism (2) further includes a buffer assembly (22), which is disposed on the support plate (12) and is used to disperse the vibration transmitted to the support plate (12) during micro-vibrations in the roadway; and The reinforcement component (23) is disposed on the support plate (12) and is used to reinforce the support effect of the support plate (12).

3. A roadway support device based on micro-vibration according to claim 2, characterized in that, The buffer assembly (22) includes a mounting groove (221) opened on the side of the support plate (12) near the impact plate (21). A guide cylinder (222) is fixedly connected to the inner wall of the mounting groove (221). A power rod (223) passes through the guide cylinder (222). The power rod (223) is slidably connected to the guide cylinder (222). The power rod (223) passes through the support plate (12) and is slidably connected to the support plate (12). One end of the power rod (223) near the rubber pad (211) is fixedly connected to the impact plate (21). A spring (224) is sleeved on the outer wall of the power rod (223). The guide cylinder (222) is fixedly connected to the mounting groove (221) by welding, and the axis of the guide cylinder (222) is perpendicular to the inner wall of the support plate (12).

4. A roadway support device based on micro-vibration according to claim 3, characterized in that, The reinforcement component (23) includes two guide plates (231) fixedly connected to the side of the support plate (12) away from the guide cylinder (222), a transmission block one (232) is slidably connected between the two guide plates (231), and a transmission block two (233) is fixedly connected to the end of the power rod (223) away from the impact plate (21). The two guide plates (231) are symmetrically arranged on the side of the support plate (12) away from the guide cylinder (222) by welding, and both guide plates (231) are designed to be L-shaped.

5. A roadway support device based on micro-vibration according to claim 4, characterized in that, A connecting groove (234) is provided on the side of the transmission block 1 (232) that contacts the transmission block 2 (233). A connecting block (235) is fixedly connected on the side of the transmission block 2 (233) that contacts the transmission block 1 (232). The side of the connecting block (235) away from the transmission block 2 (233) extends into the interior of the connecting groove (234) and slides in connection with the connecting groove (234). The connecting groove (234) is designed as a long strip with a T-shaped cross-section.

6. A roadway support device based on micro-vibration according to claim 5, characterized in that, A reinforcing anchor rod (236) is passed through the support plate (12). The reinforcing anchor rod (236) is slidably connected to the support plate (12). A support pad (237) is fixedly connected to the outer wall of the reinforcing anchor rod (236). A spring (238) is sleeved on the outer wall of the reinforcing anchor rod (236). Among them, one end of the reinforced anchor rod (236) is processed into a conical tip to facilitate insertion into the surrounding rock; the other end is processed into a hemispherical end and contacts the inclined surface of the transmission block one (232) that does not contact the transmission block two (233).

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