Rock burst roadway sidewall reinforcing device

Abstract

The utility model belongs to the field of reinforcing device, concretely relates to a kind of impact ground pressure roadway help part reinforcing device, including roadway, the vertical help part of both sides of roadway is uniformly pasted with reinforcing seat, the reinforcing seat is hollow shell, the inboard of reinforcing seat is fixedly connected with multiple evenly distributed wedge pegs, the wedge peg is embedded in the vertical help part of roadway, the vertical help part side of reinforcing seat away from roadway is contacted with baffle, the side of baffle away from reinforcing seat is fixedly connected with clamping groove, the inside of clamping groove is clamped with clamping block, and inner thread sleeve is fixedly connected on the clamping block.The utility model is driven by the thread of two-way screw rod and inner thread sleeve, can be adjusted the compaction force of two sides reinforcing seat to the vertical help part of roadway simultaneously, cooperate wedge peg embedding rock mass and internal concrete filling, form the multiple protection system of initiative support and passive reinforcement combination, to further improve the impact ground pressure capacity of roadway.

Description

Technical Field

[0001] This utility model relates to the field of reinforcement device technology, specifically a reinforcement device for the sidewalls of roadways subjected to rockburst. Background Technology

[0002] Rock bursts are one of the major hazards faced in deep coal mining, characterized by their suddenness and destructiveness. As the lifeline of the mine, the stability of the roadways directly affects the safety of the entire production system. Under intense mining pressure or geological tectonic stress, the roadway sides often experience large deformations, bulging, or even collapse, seriously threatening the safety of personnel and equipment and hindering production efficiency.

[0003] A search revealed a utility model patent with patent authorization announcement number CN112096381B, which discloses a method for relieving pressure on surrounding rock in roadways prone to rockbursts. The method involves horizontally drilling a hole on each of the left and right sides of the roadway; using a borehole probe to detect the pressure and displacement data at different depths; and using a data acquisition instrument to analyze the stress at different depths in the sidewall based on the obtained pressure and displacement data from the borehole, thus determining the depth for pressure relief by cutting a groove.

[0004] Currently, the traditional and commonly used technique for sidewall reinforcement in roadways prone to rock bursts is high-strength bolt support. However, bolt support is easily damaged by impacts and lacks sufficient strength. Therefore, improvements are needed. Utility Model Content

[0005] The purpose of this invention is to provide a roadway side reinforcement device for impact-burst roadways, which solves the problem of insufficient strength of roadway side reinforcement devices.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a roadway side reinforcement device for impact-prone roadways, comprising a roadway, wherein reinforcement seats are attached to both vertical sides of the roadway, the reinforcement seats are hollow shells, and a plurality of evenly distributed wedges are fixedly connected to the inner side of the reinforcement seats, the wedges being embedded in the vertical sides of the roadway, a baffle is contacted on the side of the reinforcement seats away from the vertical sides of the roadway, a slot is fixedly connected to the side of the baffle away from the reinforcement seats, a locking block is engaged inside the slot, an internal threaded sleeve is fixedly connected to the locking block, a bidirectional screw is threadedly connected to the inner side of the internal threaded sleeve, a locking and stabilizing mechanism is provided between the bidirectional screw and the internal threaded sleeve, a U-shaped frame is fixedly connected to the baffle, a wedge seat is fixedly connected to the end of the U-shaped frame, and the inclined part of the wedge seat abuts against the bottom of the reinforcement seat. After the reinforcement seat is fixed, concrete can be filled inside it, and the main body of the wedge is embedded in the concrete, thereby further reinforcing the vertical side of the tunnel. At the same time, the inclined surface of the wedge seat can support the reinforcement seat after being subjected to force.

[0007] Preferably, a retaining ring is fixedly connected to the wedge, and the retaining ring abuts against the vertical sidewall of the roadway. The retaining ring serves to position the wedge as it is inserted into the vertical sidewall of the roadway.

[0008] Preferably, a knob is fixedly connected to the middle section of the bidirectional screw, and the knob and the bidirectional screw are an integral structure. The knob facilitates the rotation of the bidirectional screw.

[0009] Preferably, the locking and stabilizing mechanism includes a locking disc fixedly connected to the bidirectional screw rod body, a locking sleeve fixedly connected to the internal threaded sleeve, a locking pin slidably connected inside the locking sleeve, the locking pin penetrating the locking disc and slidably connected to the locking disc, and a lever fixedly connected to the locking pin body, the lever penetrating the locking sleeve and slidably connected to the locking sleeve. Through the setting of the locking and stabilizing mechanism, a locking effect is achieved between the internal threaded sleeve and the bidirectional screw rod, thereby providing the necessary stability for the fit between the reinforcement seats on both sides and the vertical sidewalls of the tunnel.

[0010] Preferably, the lock disc has multiple slots inside, arranged in a circular array along the circumference of the lock disc. Each slot penetrates the lock disc, and the locking pin is located within one of the slots. The multiple slots facilitate the insertion of the locking pin after the lock disc rotates with the bidirectional screw.

[0011] Preferably, a spring is provided inside the lock sleeve, one end of which is fixedly connected to the locking pin, and the other end of which is fixedly connected to the inner surface of the lock sleeve. The spring force can act on the locking pin.

[0012] Preferably, a limit block is fixedly connected to the end of the lever, a sliding sleeve is slidably sleeved on the outer side of the lever body, a connecting strip is fixedly connected to the sliding sleeve, and a rubber retaining bead is fixedly connected to the end of the connecting strip, the rubber retaining bead engaging with the locking sleeve. The sliding sleeve, connecting strip, and rubber retaining bead provide a locking function for the lever and the locking pin.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model uses the thread drive of the bidirectional screw and the internal threaded sleeve to simultaneously adjust the clamping force of the two-sided reinforcement seats on the roadway sidewalls. Combined with the wedge nails embedded in the rock mass and the internal concrete filling, it forms a multi-protection system that combines active support and passive reinforcement, thereby improving the roadway's resistance to rock pressure.

[0015] 2. This utility model provides a locking and stabilizing mechanism between the bidirectional screw and the internal threaded sleeve. The locking pin, which is pre-tensioned by a spring, cooperates with the multi-angle slot of the locking disc to effectively prevent the screw from loosening and ensure the long-term stability of the support components such as the reinforcing seat. At the same time, the sliding sleeve and the rubber ball form a secondary locking mechanism to prevent the locking pin from coming out due to misoperation, further improving stability. Attached Figure Description

[0016] Figure 1 This is a perspective view of the overall structure of this utility model;

[0017] Figure 2 This utility model Figure 1 A schematic diagram of the reinforcement base structure;

[0018] Figure 3 This utility model Figure 1 A partial structural diagram;

[0019] Figure 4 This utility model Figure 1 A front sectional view;

[0020] Figure 5 This utility model Figure 4 Enlarged view of point A.

[0021] In the diagram: 1. Tunnel; 2. Reinforcing seat; 3. Wedge; 31. Retaining ring; 4. Baffle; 5. Slot; 6. Locking block; 7. Internal threaded sleeve; 8. Bidirectional screw; 9. Locking and stabilizing mechanism; 10. Knob; 11. U-shaped frame; 12. Wedge seat; 91. Locking disc; 92. Locking sleeve; 93. Locking pin; 94. Spring; 95. Lever; 96. Limiting block; 97. Sliding sleeve; 98. Connecting strip; 99. Rubber ball. Detailed Implementation

[0022] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4A rockburst roadway sidewall reinforcement device includes a roadway 1. Reinforcement seats 2 are attached to the vertical sides of both sides of the roadway 1. The reinforcement seats 2 are hollow shells. Multiple evenly distributed wedges 3 are fixedly connected to the inner side of the reinforcement seats 2. The wedges 3 are embedded in the vertical sides of the roadway 1. Retaining rings 31 are fixedly connected to the wedges 3, and the retaining rings 31 abut against the vertical sides of the roadway 1. The retaining rings 31 provide positioning for the wedges 3 inserted into the vertical sides of the roadway 1. A baffle 4 is in contact with the side of the reinforcement seat 2 away from the vertical sides of the roadway 1. A slot 5 is fixedly connected to the side of the baffle 4 away from the reinforcement seat 2. A locking block 6 is engaged inside the slot 5. An internally threaded sleeve 7 is fixedly connected to the locking block 6. A bidirectional screw 8 is threadedly connected to the inner side of the internally threaded sleeve 7. A knob 10 is fixedly connected to the middle section of the bidirectional screw 8. The knob 10 and the bidirectional screw 8 are an integral structure. The knob 10 facilitates the rotation of the bidirectional screw 8. A U-shaped frame 11 is fixedly connected to the baffle 4, and a wedge seat 12 is fixedly connected to the end of the U-shaped frame 11. The inclined surface of the wedge seat 12 abuts against the bottom of the reinforcing seat 2. After the reinforcing seat 2 is fixed, concrete can be filled inside it, and the main body of the wedge nail 3 is embedded in the concrete, thereby further reinforcing the vertical sidewall of the tunnel 1. At the same time, the inclined surface of the wedge seat 12 can support the reinforcing seat 2 when subjected to force.

[0024] Please see Figures 4-5A locking and stabilizing mechanism 9 is provided between the bidirectional screw 8 and the internal threaded sleeve 7. This mechanism secures the internal threaded sleeve 7 to the bidirectional screw 8, providing necessary stability for the fit between the reinforcing seats 2 on both sides and the vertical sidewalls of the tunnel 1. The locking and stabilizing mechanism 9 includes a locking disc 91 fixedly connected to the body of the bidirectional screw 8, a locking sleeve 92 fixedly connected to the internal threaded sleeve 7, a locking pin 93 slidably connected inside the locking sleeve 92, the locking pin 93 penetrating the locking disc 91 and slidably connected to it, and a lever 95 fixedly connected to the pin of the locking pin 93, penetrating the locking sleeve 92 and slidably connected to it. The locking disc 91 has multiple slots arranged in a circular array along its circumference, penetrating the locking disc 91, with the locking pin 93 located within each slot. The multiple slots facilitate the insertion of the locking pin 93 after the locking disc 91 rotates with the bidirectional screw 8. A spring 94 is installed inside the lock sleeve 92. One end of the spring 94 is fixedly connected to the locking pin 93, and the other end is fixedly connected to the inner surface of the lock sleeve 92. The elastic force of the spring 94 can act on the locking pin 93. A limit block 96 is fixedly connected to the end of the lever 95. A sliding sleeve 97 is slidably sleeved on the outer side of the lever 95. A connecting strip 98 is fixedly connected to the sliding sleeve 97. A rubber ball 99 is fixedly connected to the end of the connecting strip 98 and engages with the lock sleeve 92. The sliding sleeve 97, connecting strip 98, and rubber ball 99 provide a locking function for the lever 95 and the locking pin 93.

[0025] The specific implementation process of this utility model is as follows: First, the reinforcing seat 2 is tightly attached to the side wall of the tunnel 1. Then, multiple wedges 3 are driven into the pre-set holes in the rock mass of the tunnel 1 side wall until the retaining ring 31 on the wedge 3 is in close contact with the rock wall surface. At this time, the insertion depth of the wedge 3 is fixed. Then, the baffle 4 is attached to the reinforcing seat 2, and the wedge seat 12 at the end of the U-shaped frame 11 on the baffle 4 is pushed in so that its inclined surface is firmly in contact with the bottom inclined surface of the reinforcing seat 2. Then, the locking block 6 on the internal thread sleeve 7 is aligned and locked into the locking groove 5 on the baffle 4. The same method is used to assemble the baffle 4 on the other side. Once the components are installed in place, the bidirectional screw 8 is rotated via knob 10. Since the threads at both ends of the bidirectional screw 8 are in opposite directions, rotation will synchronously push the internal threaded sleeves 7 on both sides and the baffles 4 and reinforcing seats 2 connected to them towards the sidewall of the roadway 1, thereby pressing the reinforcing seats 2 on both sides tightly against the sidewall of the roadway 1 to achieve the designed pre-tightening force. Moreover, after the bidirectional screw 8 is screwed into place, the locking pin 93 can be controlled by lever 95, so that the locking pin 93 is inserted into the locking disc 91 on the bidirectional screw 8, effectively preventing the bidirectional screw 8 from loosening and ensuring the long-term stability of the support components such as the reinforcing seats 2.

[0026] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sidewall reinforcement device for roadways prone to rockburst, comprising a roadway (1), characterized in that: Both sides of the vertical sidewalls of the tunnel (1) are fitted with reinforcing seats (2). The reinforcing seats (2) are hollow shells. Multiple evenly distributed wedges (3) are fixedly connected to the inner side of the reinforcing seats (2). The wedges (3) are embedded in the vertical sidewalls of the tunnel (1). The side of the reinforcing seat (2) away from the vertical sidewalls of the tunnel (1) is in contact with a baffle (4). The side of the baffle (4) away from the reinforcing seat (2) is fixedly connected with a slot (5). The slot (5) is internally secured. A locking block (6) is attached, and an internal threaded sleeve (7) is fixedly connected to the locking block (6). A double-ended screw (8) is threadedly connected to the inner side of the internal threaded sleeve (7). A locking and stabilizing mechanism (9) is provided between the double-ended screw (8) and the internal threaded sleeve (7). A U-shaped frame (11) is fixedly connected to the baffle (4). A wedge seat (12) is fixedly connected to the end of the U-shaped frame (11). The inclined part of the wedge seat (12) abuts against the bottom of the reinforcing seat (2).

2. The rock burst roadway rib reinforcement device according to claim 1, characterized in that: A retaining ring (31) is fixedly connected to the wedge (3), and the retaining ring (31) abuts against the vertical side of the roadway (1).

3. The rock burst roadway rib reinforcement device of claim 1, wherein: A knob (10) is fixedly connected to the middle section of the bidirectional screw (8), and the knob (10) and the bidirectional screw (8) are an integral structure.

4. The rock burst roadway rib reinforcement device of claim 1, wherein: The locking and stabilizing mechanism (9) includes a locking disc (91) fixedly connected to the body of the bidirectional screw (8), a locking sleeve (92) fixedly connected to the internal threaded sleeve (7), a locking pin (93) slidably connected inside the locking sleeve (92), the locking pin (93) passing through the locking disc (91) and slidably connected to the locking disc (91), and a lever (95) fixedly connected to the pin body of the locking pin (93), the lever (95) passing through the locking sleeve (92) and slidably connected to the locking sleeve (92).

5. The rock burst roadway rib reinforcement device of claim 4, wherein: The lock disc (91) has multiple slots inside, and the multiple slots are arranged in a ring array along the circumference of the lock disc (91). The slots are set through the lock disc (91), and the lock stop pin (93) is located in the slot.

6. The rock burst roadway rib reinforcement device of claim 4, wherein: The lock sleeve (92) is provided with a spring (94) inside. One end of the spring (94) is fixedly connected to the locking pin (93), and the other end of the spring (94) is fixedly connected to the inner surface of the lock sleeve (92).

7. The rockburst roadway sidewall reinforcement device according to claim 4, characterized in that: The end of the lever (95) is fixedly connected to a limit block (96), and a sliding sleeve (97) is slidably sleeved on the outside of the lever (95). A connecting strip (98) is fixedly connected on the sliding sleeve (97), and a rubber bead (99) is fixedly connected to the end of the connecting strip (98). The rubber bead (99) is engaged with the locking sleeve (92).

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