Grouting pit collapse prevention structure for landslide mass reinforcement

Abstract

The utility model discloses an anti-collapse structure of a grouting pit for landslide mass reinforcement, which belongs to the technical field of anchoring parts, and comprises an anchor rod, the bottom end of the anchor rod is in threaded connection with a reinforcing pipe, the bottom end of the reinforcing pipe is fixedly provided with a drill bit, and the outside of the reinforcing pipe is provided with a plurality of push plates; a driving structure is fixedly installed in an inner cavity of the reinforcing pipe and comprises an air bag, the air bag is fixedly installed in the inner cavity of the reinforcing pipe, the top end of the air bag is fixedly connected with an air conveying pipe, and a fixing structure is fixedly installed in an inner cavity of the air conveying pipe. A spring is matched to pull a transmission rod to avoid random movement of the transmission rod, the resisting effect of the push plate on soil pressure is further enhanced, the stability of the grouting pit is guaranteed, meanwhile, a sealing plug cuts off internal circulation of a connecting pipe, the unfolding state of the push plate is fixed, and the thrust effect of the push plate on the inner wall of the grouting hole is enhanced; and the resistance of the anti-collapse structure to the soil pressure is effectively improved, and collapse of the grouting pit is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of anchoring pieces, in particular to a grouting pit anti-collapse structure for reinforcing a landslide body. Background Art

[0002] The anti-collapse structure of the grouting pit for landslide reinforcement is mainly used to disperse and transmit soil pressure, fundamentally eliminate the hidden dangers of grouting pit collapse, prevent grouting pit collapse, ensure construction safety and landslide reinforcement effect, build a safety line for on-site construction personnel and equipment, ensure the smooth implementation of grouting reinforcement operations, and lay a solid foundation for landslide reinforcement projects.

[0003] A Chinese patent discloses an internally supported enlarged head anchoring structure (publication number CN208844560U), which belongs to the field of anchoring technology. It includes a jacking tube, a conical protective cover, an anchoring steel plate, a steel plate fixing ring, an anchor cable bundle, and an expansion tube. The upper end surface of the jacking tube is provided with a lower annular groove, and multiple lower steel plate grooves with upper openings are evenly distributed around the upper portion of the jacking tube. The lower end surface of the conical protective cover is provided with an upper annular groove, a connecting sleeve is provided at the bottom of the conical protective cover, and multiple upper steel plate grooves with lower openings are evenly distributed around the lower portion of the conical protective cover. The upper portion of the anchoring steel plate is provided with a rotation hole and a pulling hole is provided at the top. The expansion tube is inserted into the jacking tube from below to squeeze the inner side of the anchoring steel plate.

[0004] Therefore, based on the above search and in combination with the existing ones, the state of the anchoring steel plate of this patent is completely dependent on the continuous squeezing of the expansion tube, and there is no fixed structure. Once the external working conditions change, such as being affected by the dynamic pressure of the rock and soil, vibration, etc., the anchoring steel plate is easy to shrink and displace, which greatly weakens the anchoring force and cannot effectively reinforce the landslide body. In actual engineering, it is easy to cause accidents such as foundation pit collapse, threatening personnel safety, causing economic losses, delaying the progress of the project, making it difficult to adapt to complex geology, limiting application scenarios, and reducing the versatility and practicality of the device. Utility Model Content

[0005] The purpose of the utility model is to provide a grouting pit anti-collapse structure for landslide reinforcement to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A grouting pit anti-collapse structure for reinforcing a landslide, comprising an anchor rod, a reinforcement pipe being threadedly connected to the bottom end of the anchor rod, a drill bit being fixedly mounted on the bottom end of the reinforcement pipe, and a plurality of push plates being mounted on the outside of the reinforcement pipe for resisting soil pressure;

[0008] The inner cavity of the reinforcement tube is fixedly installed with a driving structure for driving the push plate to expand, and the driving structure includes an airbag, which is fixedly installed in the inner cavity of the reinforcement tube. The top of the airbag is fixedly connected to an air supply pipe, and the inner cavity of the air supply pipe is fixedly installed with a fixing structure for fixing the expanded state of the push plate.

[0009] As a further solution of the present invention, the fixed structure includes a connecting tube, which is fixedly inserted into the inner cavity of the airbag, and the top end of the connecting tube is fixedly connected to the air supply pipe. A sealing plug is slidably installed in the inner cavity of the connecting tube, and the bottom end of the sealing plug is fixedly connected to a connecting shaft, and the bottom end of the connecting shaft is fixedly connected to a connecting disk. The inner wall of the connecting tube is fixedly connected to a magnetic ring for controlling the movement of the sealing plug, and the magnetic ring is magnetically connected to the connecting disk.

[0010] As a further solution of the present invention, the driving structure also includes a moving part, which is provided with two and fixedly connected to the upper and lower ends of the airbag respectively. The outer wall of each moving part is fixedly connected to multiple transmission rods for pushing the push plate to expand.

[0011] As a further solution of the present invention, a fixed rod is fixedly installed in the inner cavity of the reinforcement tube, and a sliding block is provided on the outer wall sliding sleeve of the fixed rod. One end of the sliding block is fixedly connected to the moving part, and the other end is rotatably connected to the transmission rod through a pin shaft.

[0012] As a further solution of the present invention, a steel pipe for reinforcing the grouting strength is installed in the inner cavity of the anchor rod, and the bottom end of the steel pipe is fixedly connected to the top end of the reinforcing pipe, and the air pipe is fixedly inserted into the inner cavity of the steel pipe.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. When the utility model is used, through the ingenious cooperation of the spring, sliding block, transmission rod and airbag in the fixed structure, the air supply pipe is used to pump air into the airbag, and the contraction of the airbag drives the moving part to move. The moving part pushes the push plate to expand outward through the transmission rod, so that the push plate is pressed against the wall of the grouting pit. The spring pulls the two sets of sliding blocks closer to each other, and pulls the transmission rod to prevent them from moving randomly, further enhancing the push plate's resistance to soil pressure and ensuring the stability of the grouting pit. At the same time, the magnetic ring adsorbs the connecting disk to control the sealing plug to cut off the flow inside the connecting pipe, preventing air leakage in the airbag, thereby fixing the expanded state of the push plate, strengthening the thrust effect of the push plate on the inner wall of the grouting hole, effectively improving the anti-collapse structure's resistance to soil pressure and preventing the grouting pit from collapsing.

[0015] 2. When the utility model is used, the anchor rod and the reinforcement pipe are connected by the base thread to facilitate installation and disassembly. After the construction is completed, the external drilling machine is started to drive the anchor rod to rotate in the opposite direction, and the anchor rod and the reinforcement pipe are gradually separated. While the anchor rod is pulled out, slurry is injected into the grouting hole at the same time, which not only realizes the disassembly and recycling of the equipment, but also implements grouting reinforcement on the landslide body in time, effectively ensuring the construction efficiency and the landslide body reinforcement effect, realizing the reuse of equipment and reducing construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a grouting pit anti-collapse structure used for landslide reinforcement.

[0017] Figure 2 This is a cross-sectional view of the overall structure of a grouting pit anti-collapse structure used for landslide reinforcement.

[0018] Figure 3 This is a structural diagram of the fixed structure in a grouting pit anti-collapse structure used for landslide reinforcement.

[0019] Figure 4 This is a cross-sectional view of the fixed structure in a grouting pit anti-collapse structure used for landslide reinforcement.

[0020] Figure 5 This is a cross-sectional view of the driving structure in a grouting pit anti-collapse structure used for landslide reinforcement.

[0021] In the figure: 1. Anchor rod; 2. Reinforcement tube; 3. Drill bit; 4. Push plate; 401. Air bag; 402. Air pipe; 403. Moving part; 404. Transmission rod; 405. Fixed ring; 406. Fixed rod; 407. Sliding block; 408. Spring; 5. Base; 6. Connecting pipe; 601. Sealing plug; 602. Connecting shaft; 603. Connecting disk; 604. Magnetic ring; 605. Limiting ring; 606. Silicone ring; 7. Steel pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0023] Example 1: Please refer to Figure 1 、 Figure 2 A grouting pit anti-collapse structure for reinforcing a landslide body comprises an anchor rod 1, a reinforcement pipe 2 is threadedly connected to the bottom end of the anchor rod 1, a drill bit 3 is fixedly installed at the bottom end of the reinforcement pipe 2, and a plurality of push plates 4 for resisting soil pressure are installed on the outside of the reinforcement pipe 2;

[0024] The inner cavity of the reinforcement tube 2 is fixedly installed with a driving structure for driving the push plate 4 to expand. The driving structure includes an airbag 401, which is fixedly installed in the inner cavity of the reinforcement tube 2. The top of the airbag 401 is fixedly connected to the air supply pipe 402. The inner cavity of the air supply pipe 402 is fixedly installed with a fixing structure for fixing the push plate 4 in the expanded state.

[0025] Specifically, a base 5 is fixedly installed on the top of the reinforcement tube 2, a threaded groove is provided in the inner cavity of the base 5, and the bottom end of the anchor rod 1 is threadedly connected to the inner cavity of the base 5, thereby achieving the fixation of the anchor rod 1 and the reinforcement tube 2, ensuring the reliability and stability of the overall structure.

[0026] See also Figure 3 、 Figure 4 The fixed structure includes a connecting tube 6, which is fixedly inserted into the inner cavity of the airbag 401, and its top end is fixedly connected to the air delivery pipe 402. A sealing plug 601 is slidably installed in the inner cavity of the connecting tube 6, and the bottom end of the sealing plug 601 is fixedly connected to a connecting shaft 602. The bottom end of the connecting shaft 602 is fixedly connected to a connecting disk 603. A magnetic ring 604 for controlling the movement of the sealing plug 601 is fixedly connected to the inner wall of the connecting tube 6, and the magnetic ring 604 is magnetically connected to the connecting disk 603.

[0027] Specifically, the connecting plate 603 is made of stainless steel. The magnetic ring 604 attracts the connecting plate 603 to control the downward movement of the sealing plug 601, thereby cutting off the flow inside the connecting tube 6 and preventing air leakage from the airbag 401, thereby facilitating the fixing of the push plate 4 after deployment.

[0028] A limiting ring 605 is fixedly installed on the inner wall of the connecting pipe 6 to prevent the sealing plug 601 from falling off, and the connecting disk 603 is located between the magnetic ring 604 and the limiting ring 605;

[0029] Specifically, the interior of the connecting disk 603 is provided with an empty slot for air circulation, and the outer wall of the sealing plug 601 is fixedly mounted with two sets of silicone rings 606 to further enhance the sealing effect of the sealing plug 601;

[0030] More specifically, the top of the connecting tube 6 and the sealing plug 601 both adopt a conical design. The conical inner wall of the connecting tube 6 is conducive to guiding the diffusion of the airflow, while enhancing the fit with the sealing plug 601, improving the sealing performance, and facilitating the sealing of the sealing plug 601. The conical outer wall of the sealing plug 601 is adapted to the conical inner wall of the connecting tube 6, allowing it to slide smoothly and fit tightly when cutting off the airflow, thereby strengthening the seal and ensuring the fixation of the push plate 4 in the expanded state.

[0031] Example 2: Please refer to Figure 2 、 Figure 5, based on Example 1, the driving structure further includes a moving member 403, two moving members 403 are provided and are fixedly connected to the upper and lower ends of the airbag 401 respectively, and the outer wall of each moving member 403 is fixedly connected to a plurality of transmission rods 404 for pushing the push plate 4 to expand;

[0032] Specifically, the inner cavity of the reinforcing tube 2 is provided with a moving groove for providing the moving member 403 to move up and down, and the moving member 403 is slidably located in the moving groove. A fixing ring 405 for fixing the airbag 401 is fixedly installed on the inner wall of the reinforcing tube 2. The fixing ring 405 is fixedly sleeved on the outer wall of the airbag 401, and the fixing ring 405 is located at the center of the airbag 401, so that when the airbag 401 is deflating and contracting, the two groups of moving members 403 are driven to achieve the effect of synchronous movement.

[0033] A fixed rod 406 is fixedly installed in the inner cavity of the reinforcement tube 2, and a sliding block 407 is slidingly sleeved on the outer wall of the fixed rod 406. One end of the sliding block 407 is fixedly connected to the moving member 403, and the other end is rotatably connected to the transmission rod 404 through a pin shaft;

[0034] Specifically, the end of the transmission rod 404 away from the sliding block 407 is rotatably connected to the push plate 4 through a connecting piece. The sliding blocks 407 are provided with two groups and are symmetrically and evenly distributed at the upper and lower ends of the fixed rod 406. A spring 408 is fixedly installed between the two groups of sliding blocks 407, and the spring 408 is sleeved on the outer wall of the fixed rod 406. The two groups of sliding blocks 407 are pulled closer to each other by the spring 408, thereby driving the transmission rod 404 to drive the push plate 4 to expand outward to fit the inner wall of the grouting hole, further strengthening the thrust of the push plate 4 on the inner wall of the grouting hole, and effectively improving the device's ability to resist soil pressure.

[0035] See also Figure 1 、 Figure 2 、 Figure 3 The inner cavity of the anchor rod 1 is installed with a steel pipe 7 for reinforcing the grouting strength, and the bottom end of the steel pipe 7 is fixedly connected to the top end of the reinforcement pipe 2, and the air supply pipe 402 is fixedly inserted into the inner cavity of the steel pipe 7.

[0036] The working principle of this utility model is:

[0037] First, the anchor rod 1 is threadedly connected to the reinforcement pipe 2 through the base 5, and the drill bit 3 at the bottom end of the reinforcement pipe 2 drills into the landslide to form a grouting pit. At this time, the spring 408 pushes the two sets of sliding blocks 407 away from each other, driving the transmission rod 404 to make the push plate 4 shrink and fit the outer wall of the reinforcement pipe 2, preventing the push plate 4 from accidentally expanding and rubbing against the soil during drilling, thereby ensuring safe and efficient drilling.

[0038] After the drilling is completed, air is pumped into the airbag 401 through the air pipe 402. The sealing plug 601 is affected by the suction force and moves upward, thereby realizing the circulation inside the connecting pipe 6. The contraction of the airbag 401 drives the movable member 403 fixed thereto to move in the movable groove of the reinforcement pipe 2. The movable member 403 pushes the push plate 4 to expand outward through the transmission rod 404, so that the push plate 4 presses against the wall of the grouting pit, resists the soil pressure, and prevents the grouting pit from collapsing.

[0039] After the push plate 4 is expanded to its full position, the magnetic ring 604 attracts the connecting disk 603, driving the sealing plug 601 to move downward to cut off the internal flow of the connecting tube 6, thereby preventing air leakage from the airbag 401 and fixing the expanded state of the push plate 4. Under the elastic force of the spring 408, the two sets of sliding blocks 407 move closer to each other, driving the transmission rod 404 to drive the push plate 4 to expand, thus continuously playing the role of preventing collapse.

[0040] After the construction is completed, the external drilling machine is started to drive the anchor rod 1 to rotate in the opposite direction. Due to the characteristics of the threaded structure, the anchor rod 1 and the reinforcement pipe 2 are gradually separated. After they are completely separated, the anchor rod 1 is pulled out. During this operation, slurry is simultaneously injected into the grouting hole, which not only completes the disassembly and recycling of the equipment, but also implements grouting reinforcement on the landslide body in time, effectively ensuring the construction efficiency and the landslide body reinforcement effect.

[0041] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A grouting pit anti-collapse structure for landslide reinforcement, comprising an anchor rod (1), characterized in that: The bottom end of the anchor rod (1) is threadedly connected to a reinforcement tube (2), a drill bit (3) is fixedly mounted on the bottom end of the reinforcement tube (2), and a plurality of push plates (4) for resisting soil pressure are mounted on the outside of the reinforcement tube (2); A driving structure for driving the push plate (4) to expand is fixedly installed in the inner cavity of the reinforcement tube (2), the driving structure comprising an airbag (401), the airbag (401) being fixedly installed in the inner cavity of the reinforcement tube (2), the top end of the airbag (401) being fixedly connected to an air delivery pipe (402), the inner cavity of the air delivery pipe (402) being fixedly installed with a fixing structure for fixing the push plate (4) in an expanded state; The driving structure further comprises a moving member (403), wherein two moving members (403) are provided and are respectively fixedly connected to the upper and lower ends of the airbag (401), and the outer wall of each moving member (403) is fixedly connected to a plurality of transmission rods (404) for pushing the push plate (4) to expand; A fixed rod (406) is fixedly installed in the inner cavity of the reinforcement tube (2), and a sliding block (407) is slidingly sleeved on the outer wall of the fixed rod (406). One end of the sliding block (407) is fixedly connected to the moving member (403), and the other end is rotatably connected to the transmission rod (404) via a pin shaft. One end of the transmission rod (404) away from the sliding block (407) is rotatably connected to the push plate (4) through a connecting piece. The sliding blocks (407) are provided in two groups and are symmetrically and evenly distributed at the upper and lower ends of the fixed rod (406). A spring (408) is fixedly installed between the two groups of sliding blocks (407), and the spring (408) is sleeved on the outer wall of the fixed rod (406).

2. The anti-collapse structure of a grouting pit for reinforcing a landslide according to claim 1, characterized in that: The fixed structure includes a connecting tube (6), the connecting tube (6) is fixedly plugged into the inner cavity of the airbag (401), and the top end of the connecting tube is fixedly connected to the air delivery pipe (402), a sealing plug (601) is slidably installed in the inner cavity of the connecting tube (6), the bottom end of the sealing plug (601) is fixedly connected to a connecting shaft (602), the bottom end of the connecting shaft (602) is fixedly connected to a connecting disk (603), the inner wall of the connecting tube (6) is fixedly connected to a magnetic ring (604) for controlling the movement of the sealing plug (601), and the magnetic ring (604) is magnetically connected to the connecting disk (603).

3. The anti-collapse structure of a grouting pit for reinforcing a landslide according to claim 1, characterized in that: A steel pipe (7) for reinforcing the grouting strength is installed in the inner cavity of the anchor rod (1), and the bottom end of the steel pipe (7) is fixedly connected to the top end of the reinforcement pipe (2), and the air delivery pipe (402) is fixedly plugged into the inner cavity of the steel pipe (7).

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