A broken surrounding rock roadway grouting reinforcement device

Abstract

The application belongs to the technical field of roadway surrounding rock reinforcement, and discloses a broken surrounding rock roadway grouting reinforcement device, which comprises an anchor rod body and a roadway rock mass, one end of the anchor rod body is provided with a supporting assembly, the end of the anchor rod body far from the supporting assembly is slidably connected with a sealing assembly, a first sliding groove is arranged in the outer part of the anchor rod body in a ring shape, a conveying assembly is movably connected in the inner part of the anchor rod body, and a pressure bearing assembly is arranged in the inner part of the anchor rod body. The supporting assembly and the sealing assembly are matched, so that the air can be discharged during grouting, the first baffle is pressed downward by the grout after the grout is injected into the top of the first baffle, and the first baffle and the second baffle are attached. The conveying assembly and the second grout discharge port are matched, so that the grouting efficiency is improved, the second grout discharge port can increase the channel for discharging the grout, and the efficiency of injecting the grout into the anchoring hole is improved.

Description

Technical Field

[0001] This invention belongs to the field of tunnel surrounding rock reinforcement technology, specifically a grouting reinforcement device for tunnels with fractured surrounding rock. Background Technology

[0002] In coal mining, various passages and chambers excavated from the surface into the ground are collectively called roadways, used for coal transportation, ventilation, drainage, and pedestrian access. During roadway construction, roadways need to be supported, generally using techniques such as anchor bolt and cable support, anchor mesh and shotcrete, lining, and grouting reinforcement.

[0003] Chinese Patent Application No. CN201711343832.3 discloses a controllable grouting reinforcement device and construction method for roadways with fractured surrounding rock. The solution includes a grouting anchor, a fixed grout stop plug, a movable grout stop plug, and an automatically extending plugging device. The grouting anchor has partial anchoring holes on its middle and front sidewalls, and its surface is threaded. A fixed grout stop plug, a movable grout stop plug, and an automatically extending plugging device are provided on the outer surface of the partial anchoring hole in the middle of the grouting anchor. The movable grout stop plug is connected to the automatically extending plugging device, and the movable grout stop plug is positioned opposite to the fixed grout stop plug. The automatically extending plugging device can preset a pressure, and when the grouting pressure reaches the preset pressure, it can automatically extend along the anchor axis.

[0004] When this scheme is implemented, after the grout is injected into the rock, it will flow downward first and then gradually fill the anchor hole. When the top of the roadway is reinforced, the grout flows to the bottom first, which seals the bottom of the anchor hole. This causes the air inside the anchor hole to be gradually squeezed into the rock fissure by the grout. This air will squeeze the fragments, increase the gap, and damage the rock structure, affecting the reinforcement effect of the roadway. Therefore, a grouting reinforcement device for roadways with fractured surrounding rock is proposed. Summary of the Invention

[0005] To address the problem of air not being able to be expelled during grouting for roadway top reinforcement as mentioned in the background art, this invention provides a grouting reinforcement device for roadways with fractured surrounding rock.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a grouting reinforcement device for a roadway with fractured surrounding rock, comprising an anchor bolt body and a roadway rock mass, wherein a support component is provided at one end of the anchor bolt body, a sealing component is slidably connected at the end of the anchor bolt body away from the support component, a first sliding groove is provided in a ring-shaped distribution on the outside of the anchor bolt body, a conveying component is movably connected inside the anchor bolt body, a pressure-bearing component is provided inside the anchor bolt body, and two sets of second grout discharge ports are provided in a linear distribution on the outside of the anchor bolt body;

[0007] The sealing assembly includes a first baffle and a second baffle that are slidably connected inside the first groove. A rubber ring is fixedly connected between the first baffle and the second baffle, and a locking block is fixedly connected to one end of the first baffle near the second baffle.

[0008] Preferably, the support assembly includes a support pad and a fixing nut that are threadedly connected to the anchor bolt body. A blocking block is provided on the side of the support pad near the rock mass of the roadway, and a slot is provided in the middle of the blocking block.

[0009] The support pad abuts against the inner wall of the tunnel rock mass, the blocking block abuts against the second baffle that slides along the first groove to the bottom of the anchor body, and at the same time the blocking block is inserted into the groove. The outer diameter of the blocking block is smaller than the diameter of the anchor hole opened in the tunnel rock mass.

[0010] The first baffle is slidably connected to the inside of the tunnel rock mass. The diameters of the first baffle and the second baffle are both smaller than the diameter of the anchoring hole inside the tunnel rock mass. The rubber ring expands outward after being squeezed and deformed by the first baffle and abuts against the inner wall of the anchoring hole. The locking block penetrates the second baffle and extends to the side of the second baffle away from the first baffle.

[0011] The conveying assembly includes a sealing blocking frame, a first discharge port on the side of the sealing blocking frame, a spiral fan blade rotatably connected inside the sealing blocking frame, a pair of locking blocks abutting the end of the sealing blocking frame near the support assembly, a traction rod slidably connected to the end of the sealing blocking frame near the support assembly, and an elastic traction rope fixedly connected to the middle of the traction rod.

[0012] The sealing block is slidably connected inside the second slurry. The first slurry outlet and the second slurry outlet have the same specifications and are corresponding to each other in position. The locking block is engaged inside the second slurry. The two sides of the traction rod are respectively hinged to the locking block.

[0013] The pressure-bearing component includes a sliding frame movably connected inside the anchor bolt body and a limiting frame fixedly connected to the anchor bolt body. The sliding frame has compression protrusions arranged linearly on both sides. The sliding frame has an arc-shaped inclined surface at one end near the support component. A pair of rigid traction ropes are fixedly connected to the middle of the sliding frame.

[0014] The sliding frame is slidably connected inside the limiting frame. The end of the sliding frame near the sealing blocking frame is fixedly connected to the elastic traction rope. The limiting frame is linearly distributed inside the anchor body and is located between the conveying assembly and the support assembly. The extrusion protrusion and the arc-shaped inclined surface both abut against the limiting frame.

[0015] The rigid traction rope passes through the middle of the limiting frame located near the support component and extends around the limiting frame toward the first baffle. The rigid traction rope extends from one end of the anchor body near the sealing component and passes through the first baffle and is fixedly connected to the second baffle.

[0016] Preferably, when the sliding frame is pulled by the rigid traction rope, the squeezing protrusion block abuts against the limiting frame to offset part of the tension on the sliding frame. When the first baffle moves toward the support pad and passes the second slurry outlet, the sliding frame pulls the elastic traction rope, causing the elastic traction rope to pull the traction link to slide, so that the traction link pulls the locking block to retract toward the center to release the locking of the sealing block. Then, the sealing block is pulled to slide along the second slide groove toward the support pad to connect the second slurry outlet and the first slurry outlet.

[0017] Beneficial effects

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

[0019] This invention facilitates the expulsion of air during grouting by setting up supporting components and sealing components in combination. When grout is injected into the top of the first baffle, the first baffle is squeezed downward by the grout, causing the first baffle and the second baffle to fit together. This squeezes the rubber ring outward and it comes into contact with the inner wall of the anchor hole, sealing the space between the first baffle and the anchor hole. This allows the injected grout to gradually move downward from the top of the anchor hole, expelling the air inside the anchor hole and improving the reinforcement effect on the roadway.

[0020] This invention improves grouting efficiency by combining a conveying component and a second grout outlet. The second grout outlet increases the grout discharge channel and accelerates the grout injection into the anchoring hole. The conveying component seals the second grout outlet before the first baffle passes it, allowing air to be discharged simultaneously when the grout is injected into the anchoring hole, thus improving the anchoring effect.

[0021] This invention, through the combination of a pressure-bearing component and a second baffle, facilitates the application of a certain tensile force to the second baffle. The tensile force on the sliding frame is partially offset by the contact between the extrusion block and the limiting frame. The rigid traction rope provides a certain tensile force to the second baffle through friction and the extrusion block and the limiting frame, so that the grout inside the space between the first baffle and the anchor hole is squeezed into the cracks inside the rock mass by the pressure of the grout transport, ensuring the reinforcement effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the anchor bolt of the present invention embedded in the rock mass;

[0023] Figure 2 This is a schematic diagram of the overall anchor bolt of the present invention;

[0024] Figure 3 This is an enlarged cross-sectional view of the sealing component of the present invention;

[0025] Figure 4 This is a schematic diagram of the overall conveying component of the present invention;

[0026] Figure 5 This is an enlarged cross-sectional view of the conveying component of the present invention;

[0027] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0028] Figure 7 This is a cross-sectional schematic diagram of the pressure-bearing component of the present invention;

[0029] Figure 8 for Figure 7 Enlarged diagram of point B in the middle.

[0030] In the diagram: 1. Anchor bolt body; 2. Tunnel rock mass; 3. Support assembly; 31. Support pad; 32. Fixing nut; 33. Blocking block; 34. Slot; 4. Sealing assembly; 41. First baffle; 42. Second baffle; 43. Rubber ring; 44. Slot; 5. First chute; 6. Conveying assembly; 61. Sealing baffle; 62. First slurry outlet; 63. Spiral fan blade; 64. Locking block; 65. Traction link; 66. Elastic traction rope; 7. Pressure-bearing assembly; 71. Sliding frame; 72. Limiting frame; 73. Extrusion protrusion; 74. Arc-shaped inclined surface; 75. Rigid traction rope; 8. Second slurry outlet; 9. Second chute. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] like Figures 1 to 8 As shown, the present invention provides a grouting reinforcement device for roadways with fractured surrounding rock, including an anchor bolt body 1 and a roadway rock mass 2. A support component 3 is provided at one end of the anchor bolt body 1, and a sealing component 4 is slidably connected at the end of the anchor bolt body 1 away from the support component 3. A first sliding groove 5 is provided in a ring shape on the outside of the anchor bolt body 1. A conveying component 6 is movably connected inside the anchor bolt body 1. A pressure-bearing component 7 is provided inside the anchor bolt body 1. Two sets of second grout discharge ports 8 are provided in a linear distribution on the outside of the anchor bolt body 1.

[0033] The sealing component 4 includes a first baffle 41 and a second baffle 42 that are slidably connected inside the first groove 5. A rubber ring 43 is fixedly connected between the first baffle 41 and the second baffle 42. A locking block 44 is fixedly connected to one end of the first baffle 41 near the second baffle 42.

[0034] The above scheme is adopted: high-pressure grout is delivered into the anchor body 1 through an external conveying device. After the grout fills the interior of the anchor body 1 and is injected into the top of the first baffle 41, the grout will press down on the first baffle 41. At this time, the second baffle 42 is pulled in place by the rigid traction rope 75, so that the first baffle 41 is squeezed and the second baffle 42 are pressed together, and the rubber ring 43 is squeezed outward to abut against the inner wall of the anchor hole, sealing the space between the first baffle 41 and the anchor hole. Then, the pressure on the grout at the top of the first baffle 41 increases, causing the grout to seep into the cracks inside the tunnel rock mass 2, so that the grout can cooperate with the anchor after solidification, providing stable support for the support inside the tunnel.

[0035] like Figure 2 and Figure 8 As shown, the support assembly 3 includes a support pad 31 and a fixing nut 32 that are threadedly connected to the anchor body 1. A blocking block 33 is provided on the side of the support pad 31 near the tunnel rock mass 2. A slot 34 is provided in the middle of the blocking block 33. Both the support pad 31 and the fixing nut 32 are threadedly connected to the anchor body 1. The support pad 31 abuts against the inner wall of the tunnel rock mass 2. The blocking block 33 abuts against the second baffle 42 that slides along the first sliding groove 5 to the bottom of the anchor body 1. At the same time, the slot 34 is inserted into the slot 44. The outer diameter of the blocking block 33 is smaller than the diameter of the anchor hole opened in the tunnel rock mass 2.

[0036] The above scheme is adopted as follows: By setting up the support component 3, the anchor body 1 is fixed and supported by the support pad 31 and the fixing nut 32. The support pad 31 abuts against the roadway rock mass 2 to keep the anchor body 1 centered and stable inside the anchor hole of the roadway rock mass 2. By setting up the blocking block 33 and the slot 34, the blocking block 33 supports and blocks the second baffle 42, and at the same time, the slot 34 is engaged with the block 44 for fixation. The outer diameter of the blocking block 33 is smaller than the diameter of the anchor hole opened in the roadway rock mass 2, so that the air inside the anchor hole can be discharged from the support pad 31.

[0037] like Figure 2 and Figure 3 As shown, the first baffle 41 is slidably connected to the inside of the tunnel rock mass 2. The diameters of the first baffle 41 and the second baffle 42 are both smaller than the diameter of the anchoring hole inside the tunnel rock mass 2. The rubber ring 43 expands outward after being squeezed and deformed by the first baffle 41 and abuts against the inner wall of the anchoring hole. The locking block 44 penetrates the second baffle 42 and extends to the side of the second baffle 42 away from the first baffle 41.

[0038] The above solution is adopted: by setting a sealing component 4, the first baffle 41 and the second baffle 42 jointly block the grout, so that the grout is stored in the space between the first baffle 41 and the anchor hole. After the grout is injected into the top of the first baffle 41, the first baffle 41 will be squeezed downward by the grout. At this time, the second baffle 42 is pulled by the rigid traction rope 75 and remains in place, so that the first baffle 41 and the second baffle 42 are in contact, thereby squeezing the rubber ring 43 outward, so that the rubber ring 43 and the inner wall of the anchor hole come into contact, sealing the space between the first baffle 41 and the anchor hole. Thus, when the grout is injected, no air will be left at the top of the grout, and the grout can directly seep into the cracks inside the rock mass 2 of the tunnel.

[0039] like Figure 4 , Figure 5 and Figure 6 As shown, the conveying assembly 6 includes a sealing block frame 61. A first discharge port 62 is provided on the side of the sealing block frame 61. A spiral fan blade 63 is rotatably connected inside the sealing block frame 61. A pair of locking blocks 64 abut against one end of the sealing block frame 61 near the support assembly 3. A traction rod 65 is slidably connected to one end of the sealing block frame 61 near the support assembly 3. An elastic traction rope 66 is fixedly connected to the middle of the traction rod 65. The sealing block frame 61 is slidably connected inside the second chute 9. The first discharge port 62 has the same specifications as the second discharge port 8 and corresponds to the position of the second discharge port 8. The locking blocks 64 are engaged inside the second chute 9. The two sides of the traction rod 65 are respectively hinged to the locking blocks 64.

[0040] The above solution employs the following: By setting up the conveying assembly 6, the sealing blocking frame 61 slides inside the second chute 9 to seal the second slurry outlet 8. The first slurry outlet 62 is designed to connect with the second slurry outlet 8 after the sealing blocking frame 61 slides, allowing slurry to be discharged from both the first and second slurry outlets. By setting up the spiral fan blade 63, after the first and second slurry outlets 62 connect, the spiral fan blade 63 rotates under the impact of the slurry, pushing the slurry out of the second slurry outlet 8 more quickly. The design of the locking block 64, the traction link 65, and the elastic traction rope 66 allows the sealing blocking frame 61 to be released from its lock, enabling it to slide and release the seal of the second slurry outlet 8. The locking block 64 is engaged inside the second chute 9, keeping the sealing blocking frame 61 fixed and preventing it from sliding. The elastic traction rope 66 can pull the middle of the traction link 65, which in turn pulls the locking block 64 towards the middle.

[0041] This releases the sliding restriction of the sealing block 61.

[0042] like Figure 3 , Figure 5 , Figure 7 and Figure 8 As shown, the pressure-bearing component 7 includes a sliding frame 71 movably connected inside the anchor bolt body 1 and a limiting frame 72 fixedly connected to the anchor bolt body 1. The sliding frame 71 has compression protrusions 73 linearly distributed on both sides. An arc-shaped inclined surface 74 is provided at one end of the sliding frame 71 near the support component 3. A pair of rigid traction ropes 75 are fixedly connected to the middle of the sliding frame 71. The sliding frame 71 is slidably connected inside the limiting frame 72. The end of the sliding frame 71 near the sealing blocking frame 61 is fixedly connected to an elastic traction rope 66. The limiting frame 72 is linearly distributed inside the anchor bolt body 1 and is located between the conveying assembly 6 and the support assembly 3. The extrusion protrusion 73 and the arc-shaped inclined surface 74 both abut against the limiting frame 72. The rigid traction rope 75 passes through the middle of the limiting frame 72 located near the support assembly 3 and extends around the limiting frame 72 toward the first baffle 41. The rigid traction rope 75 extends from one end of the anchor bolt body 1 near the sealing assembly 4 and passes through the first baffle 41 and is fixedly connected to the second baffle 42.

[0043] The above solution is adopted as follows: By setting the pressure-bearing component 7, the sliding frame 71 slides inside the limiting frame 72. When the sliding frame 71 is pulled, the compression protrusion 73 abuts against the limiting frame 72 to offset part of the tension on the sliding frame 71. The setting of the arc-shaped inclined surface 74 ensures that when the sliding frame 71 enters the limiting frame 72, the end of the sliding frame 71 will not abut against the limiting frame 72, causing the limiting frame 72 to get stuck. By setting the rigid traction rope 75, the rigid traction rope 75 turns and wraps around the inside of the limiting frame 72 and the end of the anchor rod body 1 in an S-shape, which can be used in the first... After the space between the first baffle 41 and the anchor hole is filled with grout, the rigid traction rope 75 provides a certain tension to the second baffle 42 through friction and compression of the protrusion 73 and the limiting frame 72. This causes the grout in the space between the first baffle 41 and the anchor hole to be squeezed into the cracks inside the rock mass by the pressure of the grout transport. When the pressure of the transported grout reaches a certain level, it will push the second baffle 42 to pull the rigid traction rope 75 to move, causing the rigid traction rope 75 to slide inside the limiting frame 72, thereby maintaining the stable infiltration of the grout into the cracks inside the rock mass.

[0044] like Figures 2 to 8 As shown, when the sliding frame 71 is pulled by the rigid traction rope 75, the squeezing protrusion 73 and the limiting frame 72 abut against each other to offset part of the tension on the sliding frame 71. When the first baffle 41 moves toward the support pad 31 and passes the second discharge port 8, the sliding frame 71 pulls the elastic traction rope 66, causing the elastic traction rope 66 to pull the traction link 65 to slide, so that the traction link 65 pulls the locking block 64 to retract to the middle, thereby releasing the lock of the sealing blocking frame 61. Then, the sealing blocking frame 61 is pulled to slide along the second slide groove 9 toward the support pad 31, so that the second discharge port 8 and the first discharge port 62 are connected.

[0045] Using the above scheme: When the sliding frame 71 is pulled by the rigid traction rope 75, the extrusion protrusion 73 abuts against the limiting frame 72, causing the extrusion protrusion 73 to be squeezed, thereby offsetting part of the tension on the sliding frame 71. When the first baffle 41 is squeezed by the slurry and moves past the second slurry outlet 8, the sliding frame 71 has pulled the elastic traction rope 66 to a taut state, causing the elastic traction rope 66 to pull the traction link 65 to slide. Since the traction link 65 is rotatably connected to the locking block 64, and the locking block 64 is squeezed against the inside of the sealing block frame 61, the traction link 65 will first pull the locking block 64 to the center to release the locking of the sealing block frame 61. Then, the traction link 65 pulls the sealing block frame 61 to slide along the second slide groove 9 toward the support pad 31, so that the second slurry outlet 8 and the first slurry outlet 62 are connected, allowing the slurry to be discharged from the second slurry outlet 8, thus accelerating the efficiency of slurry injection.

[0046] The working principle and usage process of this invention are as follows: During operation, after the anchor bolt body 1 is installed into the anchor hole at the top of the roadway rock mass 2, high-pressure grout is delivered into the anchor bolt body 1 through an external conveying device. After the grout fills the interior of the anchor bolt body 1 and is injected into the top of the first baffle 41, the grout will press down on the first baffle 41. At this time, the second baffle 42 is pulled by the rigid traction rope 75 and kept in place, so that the first baffle 41 is squeezed and the second baffle 42 are pressed together, and the rubber ring 43 is squeezed outward to abut against the inner wall of the anchor hole, sealing the space between the first baffle 41 and the anchor hole. Then, the pressure on the grout at the top of the first baffle 41 increases, causing the grout to seep into the gaps inside the roadway rock mass 2.

[0047] As the grout pressure at the top of the first baffle 41 increases, the second baffle 42 is pushed downward. Simultaneously, the rigid traction rope 75 pulls the sliding frame 71 downward. When the first baffle 41 passes the second grout outlet 8, the sliding frame 71 pulls the traction link 65 through the elastic traction rope 66, causing the traction link 65 to pull the locking block 64 towards the center, releasing the lock of the sealing blocking frame 61. Then, the traction link 65 pulls the sealing blocking frame 61 to slide along the second slide groove 9, connecting the second grout outlet 8 and the first grout outlet 62, allowing the grout to be discharged from the second grout outlet 8, thus accelerating the grout injection efficiency. When the second baffle 42 is squeezed downward, the air inside the anchor hole is squeezed out of the anchor hole until the second baffle 42 contacts the blocking block 33. At the same time, the locking block 44 engages with the slot 34, thus completing the grouting.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A grouting reinforcement device for a roadway with fractured surrounding rock, comprising an anchor bolt body (1) and roadway rock mass (2), characterized in that: The anchor body (1) is provided with a support component (3) at one end, and a sealing component (4) is slidably connected to the end of the anchor body (1) away from the support component (3). The anchor body (1) is provided with a first sliding groove (5) in a ring shape on the outside. The anchor body (1) is movably connected with a conveying component (6) inside. The anchor body (1) is provided with a pressure-bearing component (7) inside. The anchor body (1) is provided with two sets of second grout discharge ports (8) in a linear distribution on the outside. The sealing assembly (4) includes a first baffle (41) and a second baffle (42) slidably connected inside the first groove (5). A rubber ring (43) is fixedly connected between the first baffle (41) and the second baffle (42). A locking block (44) is fixedly connected to one end of the first baffle (41) near the second baffle (42). The first baffle (41) is slidably connected to the inside of the tunnel rock mass (2). The diameters of the first baffle (41) and the second baffle (42) are both smaller than the diameter of the anchor hole inside the tunnel rock mass (2). The rubber ring (43) expands outward after being squeezed and deformed by the first baffle (41) and abuts against the inner wall of the anchor hole. The locking block (44) penetrates the second baffle (42) and extends to the side of the second baffle (42) away from the first baffle (41). The conveying assembly (6) includes a sealing block frame (61), a first discharge port (62) is provided on the side of the sealing block frame (61), a spiral fan blade (63) is rotatably connected inside the sealing block frame (61), a pair of locking blocks (64) are abutted at one end of the sealing block frame (61) near the support assembly (3), a traction rod (65) is slidably connected at one end of the sealing block frame (61) near the support assembly (3), and an elastic traction rope (66) is fixedly connected in the middle of the traction rod (65).

2. The grouting reinforcement device for fractured surrounding rock roadways according to claim 1, characterized in that: The support assembly (3) includes a support pad (31) and a fixing nut (32) that are threadedly connected to the anchor body (1). A blocking block (33) is provided on the side of the support pad (31) near the roadway rock mass (2). A slot (34) is provided in the middle of the blocking block (33).

3. The grouting reinforcement device for fractured surrounding rock roadways according to claim 2, characterized in that: The support pad (31) abuts against the inner wall of the tunnel rock mass (2), the blocking block (33) abuts against the second baffle (42) that slides along the first groove (5) to the bottom of the anchor body (1), and at the same time the card slot (34) is inserted into the card block (44), and the outer diameter of the blocking block (33) is smaller than the diameter of the anchor hole opened in the tunnel rock mass (2).

4. The grouting reinforcement device for fractured surrounding rock roadways according to claim 1, characterized in that: The sealing block (61) is slidably connected inside the second slide groove (9). The first slurry outlet (62) has the same specifications as the second slurry outlet (8) and corresponds to the position of the second slurry outlet (8). The locking block (64) is engaged inside the second slide groove (9). The two sides of the traction rod (65) are respectively hinged to the locking block (64).

5. The grouting reinforcement device for fractured surrounding rock roadways according to claim 1, characterized in that: The pressure-bearing component (7) includes a sliding frame (71) movably connected inside the anchor body (1) and a limiting frame (72) fixedly connected to one end of the anchor body (1) near the support pad (31). The sliding frame (71) has compression protrusions (73) arranged linearly on both sides. The sliding frame (71) has an arc-shaped inclined surface (74) at one end near the support component (3). A pair of rigid traction ropes (75) are fixedly connected to the middle of the sliding frame (71).

6. The grouting reinforcement device for fractured surrounding rock roadways according to claim 5, characterized in that: The sliding frame (71) is slidably connected inside the limiting frame (72). The end of the sliding frame (71) near the sealing blocking frame (61) is fixedly connected to the elastic traction rope (66). The limiting frame (72) is linearly distributed inside the anchor body (1) and is located between the conveying assembly (6) and the support assembly (3). The extrusion protrusion (73) and the arc-shaped inclined surface (74) both abut against the limiting frame (72).

7. The grouting reinforcement device for fractured surrounding rock roadways according to claim 5, characterized in that: The rigid traction rope (75) passes through the middle of the limiting frame (72) located near the support assembly (3) and extends around the limiting frame (72) toward the first baffle (41). The rigid traction rope (75) extends from one end of the anchor body (1) near the sealing assembly (4) and passes through the first baffle (41) and is fixedly connected to the second baffle (42).

8. The grouting reinforcement device for fractured surrounding rock roadways according to claim 6, characterized in that: When the sliding frame (71) is pulled by the rigid traction rope (75), the extrusion protrusion (73) and the limiting frame (72) abut against each other to offset part of the tension on the sliding frame (71). When the first baffle (41) moves toward the support pad (31) and passes the second discharge port (8), the sliding frame (71) pulls the elastic traction rope (66), causing the elastic traction rope (66) to pull the traction link (65) to slide, so that the traction link (65) pulls the locking block (64) to retract toward the center to release the locking of the sealing block (61). Then, the sealing block (61) is pulled to slide along the second slide groove (9) toward the support pad (31), so that the second discharge port (8) and the first discharge port (62) are connected.

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