Anchoring device for slope protection

Abstract

The application belongs to the technical field of slope protection, and particularly relates to an anchoring device for slope protection. The plug rod assembly is slidably arranged in the interior of the anchoring plug. When the plug rod assembly is in the initial position, that is, the anchoring device is in the initial state, the anchoring end of the plug rod assembly is constrained by the cavity wall of the anchoring plug and cannot extend out of the side wall of the anchoring plug. At this time, the workers can easily push the anchoring device to the deep part of the anchor hole, thereby reducing the difficulty of slope anchoring and improving the construction efficiency. After the pushing of the anchoring device is completed, the workers can introduce fluid into the interior of the anchoring plug through the pipe body, and use the fluid to push the plug rod assembly, so that the plug rod assembly slides from the initial position to the anchoring position. The anchoring device is switched from the initial state to the anchoring state. In the anchoring state, the anchoring end of the plug rod assembly pops out of the perforation and extends to the outside of the anchoring plug to be clamped on the hole wall of the anchor hole, thereby improving the stability of the anchoring of the anchoring device.

Description

Technical Field

[0001] This invention belongs to the field of slope protection technology, and specifically relates to an anchoring device for slope protection. Background Technology

[0002] Anchor cables are prestressed steel strands that are fixed at one end to the slope surface and at the other end through the slope sliding surface and anchored in the stable rock mass within the sliding surface. They directly generate anti-sliding resistance on the sliding surface, increase anti-sliding frictional resistance, and keep the structural surface in a compressed state to improve the integrity of the slope rock mass. This fundamentally improves the mechanical properties of the rock mass, effectively controls the displacement of the rock mass, and promotes its stability. It achieves the purpose of treating bedding planes, landslides, and dangerous rocks and boulders, and is widely used in geotechnical engineering, highways, railways, water conservancy, mining and other fields.

[0003] To improve the stability of anchor cable anchoring, new types of anchor cables have emerged in the prior art, such as the Chinese utility model patent CN219753218U, which discloses a slope treatment anchor cable structure. This patent addresses the issue that during the insertion of the anchor cable structure into the slope soil, the relatively smooth outer surface results in low friction with the soil, making it difficult to ensure the overall stability of the anchor cable structure and causing slippage that affects its use. This application utilizes a connecting ring, threaded holes, a ground-insertion outer shell, a thickened cone, and a ground-insertion tip. The operator holds the cone block and places the mounting ring close to the connecting ring. The cone block is then fixed to the ground-insertion outer shell through the cooperation of bolts and threaded holes, forming a single unit. When the anchor cable assembly is inserted into the soil, the cone block inserts first, and the ground-insertion tip on the outside of the outer shell effectively increases the contact area between the outer shell and the soil, increasing friction and improving the connection and fixation effect, thus ensuring the stability of the outer shell.

[0004] While the above solution effectively addresses the issue of low friction between the ground-insertion casing and the soil, the ground-insertion tip is fixed to the casing. When pushing the casing into the anchor hole in the soil, the tip can get stuck against the hole wall, making it difficult to insert the casing deep into the hole. This increases the difficulty of slope anchoring and reduces construction efficiency. Furthermore, pushing the casing can damage the anchor hole wall, making the hole prone to collapse and affecting subsequent grouting operations. Summary of the Invention

[0005] This invention provides an anchoring device for slope protection to solve the technical problem in existing anchor cable structures where the ground insertion tip on the ground insertion shell gets stuck on the wall of the anchor hole, making it difficult to push the ground insertion shell deep into the anchor hole, which increases the difficulty of slope anchoring and reduces the efficiency of slope anchoring construction.

[0006] To solve the above problems, the present invention is achieved through the following technical solution:

[0007] An anchoring device for slope protection includes an anchoring plug, a plug assembly, a tube body, and an anchor cable;

[0008] The anchoring plug is a tubular structure closed at both ends. The outer wall of the anchoring plug is provided with a through hole that communicates with the internal cavity of the anchoring plug. The plug rod assembly is slidably disposed in the cavity along the length of the anchoring plug.

[0009] One end of the anchor cable is connected to the tail end of the anchor plug;

[0010] One end of the tube passes through the end wall of the anchor plug and communicates with the cavity to introduce fluid into the cavity. The fluid pushes the plug assembly to slide from the initial position to the anchor position. When the plug assembly slides to the anchor position, the anchor end of the plug assembly can pop out through the perforation and extend to the outside of the anchor plug.

[0011] To better realize the present invention, further optimizations are made to the above structure, wherein the insertion rod assembly includes an anchor rod, a slide block, and a sleeve;

[0012] The slide block is slidably disposed in the cavity along the length direction of the anchoring plug;

[0013] The sleeve is a tubular structure closed at both ends. The sleeve is set on the slide block. The length direction of the sleeve is perpendicular to the length direction of the anchor plug. A sliding hole is provided at the end of the sleeve facing the cavity wall. The anchor rod is slidably set at the sliding hole along the length direction of the sleeve. An elastic element is provided between the anchor rod and the bottom of the sleeve to push the anchor rod away from the bottom of the sleeve.

[0014] To better realize the present invention, the above structure is further optimized by providing a limiting block for locking the elastic element at the tail end of the anchor rod.

[0015] To better realize the present invention, the above structure is further optimized. The number of sleeves and anchor rods are both multiple. Multiple sleeves are arranged on the slide block at equal intervals around the central axis of the anchor plug. Multiple anchor rods are slidably arranged at the sliding holes of multiple sleeves in a one-to-one correspondence.

[0016] To better realize the present invention, the above structure is further optimized so that the shape of the slide cross section matches the shape of the cavity cross section.

[0017] To better realize the present invention, the above structure is further optimized by having multiple insertion rod assemblies arranged along the length direction of the anchor plug.

[0018] To better realize the present invention, the above structure is further optimized, and the anchoring device for slope protection also includes a sliding block;

[0019] The sliding block is slidably disposed in the cavity along the length direction of the anchor plug, and the sliding block is located on the side of the plug assembly facing the tail end of the anchor plug;

[0020] The side wall of the anchor plug is provided with a liquid inlet that communicates with the cavity; in the initial state, the liquid inlet is located between the sliding block and the head end of the anchor plug; in the anchored state, the liquid inlet is located between the sliding block and the tail end of the anchor plug.

[0021] To better realize the present invention, the above structure is further optimized by providing a unidirectional through hole on the sliding block; in the cavity, the fluid between the sliding block and the head end of the anchor plug can enter between the sliding block and the tail end of the anchor plug through the through hole.

[0022] To better realize the present invention, the above structure is further optimized, and the anchoring plug includes a first cylindrical body and a second cylindrical body;

[0023] Both the first cylinder and the second cylinder are tubular structures with one end open, and the open end of the first cylinder and the open end of the second cylinder are connected by threads.

[0024] One end of the anchor cable is connected to the closed end of the first cylinder.

[0025] To better realize the present invention, the above structure is further optimized, and the closed end of the second cylinder is a pointed cone-shaped structure that protrudes away from the first cylinder.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] In the anchoring device provided by this invention, the insert rod assembly is slidably disposed inside the anchoring plug. When the insert rod assembly is in the initial position, that is, when the anchoring device is in the initial state, the anchoring end of the insert rod assembly is constrained by the cavity wall of the anchoring plug and will not protrude from the side wall of the anchoring plug. When anchoring the slope, the workers can easily push the anchoring device in the initial state to the depth of the anchor hole, thereby reducing the difficulty of slope anchoring and improving the construction efficiency of slope anchoring. After the anchoring device is pushed, the workers can introduce fluid into the interior of the anchoring plug through the pipe and use the fluid to push the insert rod assembly, causing the insert rod assembly to slide from the initial position to the anchoring position. When the insert rod assembly slides to the anchoring position, the anchoring device switches from the initial state to the anchoring state, and the anchoring end of the insert rod assembly can pop out from the perforation and extend to the outside of the anchoring plug to be locked in the hole wall of the anchor hole, thereby improving the anchoring stability of the anchoring device. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of an anchoring device for slope protection according to the present invention in its initial state.

[0030] Figure 2 yes Figure 1 A magnified view of part A in the middle.

[0031] Figure 3 This is a schematic diagram of the structure of an anchoring device for slope protection according to the present invention when it is in the anchoring state.

[0032] Figure 4 This is a cross-sectional view of the anchor plug in an anchoring device for slope protection according to the present invention.

[0033] Figure 5 This is a schematic diagram of the insert rod assembly in an anchoring device for slope protection according to the present invention.

[0034] Figure 6 This is a cross-sectional view of the sliding block in an anchoring device for slope protection according to the present invention.

[0035] In the picture:

[0036] 1. Anchor plug; 11. First cylinder; 111. Liquid inlet; 12. Second cylinder; 121. Perforation;

[0037] 2. Insert rod assembly; 21. Anchor rod; 211. Limiting block; 22. Slide block; 23. Sleeve; 24. Elastic element;

[0038] 3. Pipe body;

[0039] 4. Anchor cable;

[0040] 5. Sliding block; 51. Through hole; 52. Sealing plate. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0042] In the description of this invention, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] In the embodiments of this application, such as Figures 1 to 6 As shown, the anchoring device includes an anchor plug 1, a plug assembly 2, a tube body 3, and an anchor cable 4; wherein,

[0045] The anchor plug 1 is a tubular structure closed at both ends. The outer wall of the anchor plug 1 is provided with a through hole 121 that communicates with the internal cavity of the anchor plug 1. The plug rod assembly 2 is slidably disposed in the cavity along the length direction of the anchor plug 1.

[0046] One end of the anchor cable 4 is connected to the tail end of the anchor plug 1;

[0047] One end of the tube 3 passes through the end wall of the anchor plug 1 and communicates with the cavity.

[0048] When the anchoring device is in its initial state, the insert rod assembly 2 is located in the initial position within the cavity, see [reference]. Figure 1 The insertion rod assembly 2 abuts against the cavity wall through its anchoring end, making the position of the insertion rod assembly 2 less likely to change.

[0049] When anchoring a slope, workers can insert the anchor plug 1 in the initial state of the anchoring device into the anchor hole on the slope and push the anchor cable 4 to easily push the anchor plug 1 deeper into the anchor hole until the anchor plug 1 is at the bottom of the anchor hole, or stop when the anchor plug 1 reaches the anchoring position (the position of the anchor plug 1 is determined by the length of the anchor cable 4 pushed into the anchor hole), thus completing the pushing of the anchoring device.

[0050] Subsequently, the staff can introduce fluid into the cavity through the pipe 3, and use the pressure generated by the fluid to push the insertion rod assembly 2 to overcome the friction between the anchoring end of the insertion rod assembly 2 and the cavity wall, so that the insertion rod assembly 2 slides from the initial position to the anchoring position.

[0051] When the insert rod assembly 2 slides to the anchoring position, the anchoring end of the insert rod assembly 2 is aligned with the position of the through hole 121. The constraint of the cavity wall on the anchoring end of the insert rod assembly 2 is eliminated. At this time, the anchoring end of the insert rod assembly 2 can be ejected from the through hole 121. See [link / reference] Figure 2 The anchoring device changes from its initial state to its anchored state;

[0052] In the anchored state, the anchoring end of the plug assembly 2 extends to the outside of the anchor plug 1 and engages with the wall of the anchor hole to improve the stability of the anchoring device.

[0053] When the anchoring device is in its initial state, the anchoring end of the plug assembly 2 does not extend out of the anchor plug 1, and the surface of the anchor plug 1 is relatively smooth. Workers can easily push it into the depth of the anchor hole using the anchor cable 4, thereby reducing the difficulty of slope anchoring and improving the construction efficiency of slope anchoring.

[0054] Furthermore, after the anchoring device is pushed, the pressure generated by the fluid can be used to push the insert rod assembly 2, so that the anchoring device can switch from the initial state to the anchoring state, so that the anchoring end of the insert rod assembly 2 can extend out of the anchor plug 1 through the through hole 121 and lock into the anchor hole wall, thereby improving the anchoring effect.

[0055] It should be noted that the anchoring end of the aforementioned plug assembly 2 is the ground plug tip mentioned in the background art. In this embodiment, the anchoring end of the plug assembly 2 can move in the radial direction of the anchor plug 1 to change the state of the anchoring device, so that the anchoring device can be easily inserted into the anchor hole. After placement, the anchoring end of the plug assembly 2 can be used to increase the anchoring effect. This is significantly different from the fixed ground plug tip in the prior art.

[0056] In some embodiments, the anchoring plug 1 described above includes a first cylindrical body 11 and a second cylindrical body 12, see [link to documentation]. Figure 4 ;in,

[0057] Both the first cylinder 11 and the second cylinder 12 are tubular structures with one open end. The open end of the first cylinder 11 and the open end of the second cylinder 12 are connected by threads, so that the inner cavity of the first cylinder 11 and the inner cavity of the second cylinder 12 together form the above-mentioned cavity.

[0058] The closed end of the first cylinder 11 is the tail end of the aforementioned anchor plug 1. One end of the anchor cable 4 is connected to the closed end of the first cylinder 11, and one end of the tube 3 passes through the closed end of the first cylinder 11 and communicates with the cavity.

[0059] Preferably, the closed end of the second cylinder 12 is the head end of the anchor plug 1 mentioned above. The closed end of the second cylinder 12 is a pointed cone-shaped structure protruding away from the first cylinder 11, so as to reduce the resistance when the anchor plug 1 moves into the depth of the anchor hole, so that the workers can push the anchor plug 1 into the depth of the anchor hole more easily, thereby further reducing the difficulty of slope anchoring.

[0060] In some embodiments, the aforementioned insert assembly 2 includes an anchor rod 21, a slide block 22, and a sleeve 23. See [link to previous document]. Figure 2 and Figure 5 ;in,

[0061] The slide block 22 is slidably disposed in the cavity along the length direction of the anchor plug 1. In this embodiment, the shape of the cross-section of the slide block 22 matches the shape of the cross-section of the cavity so that the slide block 22 is more stable when sliding.

[0062] The sleeve 23 is a tubular structure closed at both ends. The sleeve 23 is set on the slide block 22. The length direction of the sleeve 23 is perpendicular to the length direction of the anchor plug 1. A sliding hole is provided at one end of the sleeve 23 facing the cavity wall. The anchor rod 21 is slidably set at the sliding hole along the length direction of the sleeve 23. An elastic element 24 is provided between the anchor rod 21 and the bottom of the sleeve 23 for pushing the anchor rod 21 away from the bottom of the sleeve 23.

[0063] When the insert rod assembly 2 moves to the anchoring position, the constraint of the cavity wall on the anchor rod 21 is eliminated, and the elastic force of the elastic element 24 can push the anchor rod 21 away from the bottom of the sleeve 23, so that the head end of the anchor rod 21 can extend out of the anchor plug 1 and engage with the anchor hole wall, thereby improving the anchoring effect.

[0064] It should be noted that the tail end of the anchor rod 21 is provided with a limiting block 211 for locking the elastic element 24;

[0065] The aforementioned elastic element 24 is a helical spring. One end of the helical spring abuts against the limiting block 211, and the other end abuts against the bottom of the sleeve 23. The helical spring is always in a compressed state. In this state, the helical spring can push the anchor rod 21 away from the bottom of the sleeve 23.

[0066] When the anchoring device is in its initial state, the head end of the anchor rod 21 is always in contact with the cavity wall under the elastic force of the helical spring.

[0067] When the anchoring device is in the anchored state, the constraint of the cavity wall on the anchor rod 21 is eliminated, and the head end of the anchor rod 21 can extend outward through the perforation 121.

[0068] To prevent the helical spring from failing due to prolonged compression, the anchoring device can be assembled on-site when needed. The specific assembly method is as follows:

[0069] Push the anchor rod 21 toward the bottom of the sleeve 23 so that the width of the insert rod assembly 2 is less than the width of the cavity, so that the insert rod assembly 2 can be inserted into the second cylinder 12. Then thread the first cylinder 11 and the second cylinder 12 together to complete the installation of the anchoring device.

[0070] In some embodiments, the number of sleeves 23 and anchor rods 21 is multiple. Multiple sleeves 23 are arranged at equal intervals around the central axis of the anchor plug 1 on the slide block 22. Multiple anchor rods 21 are slidably arranged at the sliding holes of multiple sleeves 23 in a one-to-one correspondence, so as to improve the anchoring effect of the anchoring device.

[0071] Preferably, the slide block 22 is provided with a mounting plate on the side facing the anchor plug 1; there are two sleeves 23 and two anchor rods 21, with the two sleeves 23 respectively provided on both sides of the mounting plate, see [reference]. Figure 5 The axes of the two sleeves 23 coincide, and the two anchor rods 21 are respectively set in the two sleeves 23;

[0072] The side wall of the anchor plug 1 is provided with two through holes 121, and the positions of the two through holes 121 correspond to the positions of the two sleeves 23, so that when the slide block 22 slides to the anchor position, the two anchor rods 21 can pass through the two through holes 121 respectively.

[0073] More preferably, the cavity wall is provided with a sliding groove, see [reference]. Figure 4 The length direction of the groove is parallel to the sliding direction of the insert rod assembly 2, the width of the groove matches the width of the end of the anchor rod 21, the two ends of the groove correspond to the initial position and the anchor position of the insert rod assembly 2 respectively, and the end of the groove corresponding to the anchor position is connected to the above-mentioned through hole 121.

[0074] When the insertion rod assembly 2 slides in the cavity along the length of the anchor plug 1, the head end of the anchor rod 21 is always located in the groove. The groove can restrict the position of the anchor rod 21 and prevent the insertion rod assembly 2 from rotating around the central axis of the anchor plug 1, which would cause it to be misaligned with the position of the through hole 121 and unable to pass through the through hole 121.

[0075] In some embodiments, the number of the aforementioned insertion rod assemblies 2 is multiple, and the multiple insertion rod assemblies 2 are arranged along the length direction of the anchor plug 1, with adjacent insertion rod assemblies 2 abutting against each other. See [reference needed] Figure 1 and Figure 3 When multiple insert rod assemblies 2 slide to the anchoring position, they can increase the contact area between the anchoring device and the anchor hole, increase the friction, and further improve the anchoring effect of the anchoring device.

[0076] In some embodiments, the anchoring device further includes a sliding block 5, see [link to documentation]. Figure 1 and Figure 3 ;in,

[0077] The sliding block 5 is slidably disposed in the cavity along the length direction of the anchor plug 1, and the sliding block 5 is located on the side of the plug assembly 2 facing the tail end of the anchor plug 1. The sliding block 5 divides the cavity into two mutually isolated first cavities and second cavities.

[0078] An anchor plug 1 has a liquid inlet 111 on its side wall that communicates with the cavity;

[0079] In its initial state, the liquid inlet 111 is located between the sliding block 5 and the head of the anchor plug 1, that is, the liquid inlet 111 is connected to the first cavity.

[0080] After the workers complete the pushing of the anchoring device, the outlet end of the grouting equipment can be connected to the pipe body 3. The grouting equipment injects cement slurry (fluid) into the second cavity through the pipe body 3. The cement slurry squeezes and pushes the sliding block 5, causing the sliding block 5 to move and push the insertion rod assembly 2 to slide to the anchoring position. At this time, the liquid inlet 111 is located between the sliding block 5 and the tail end of the anchoring plug 1, that is, the liquid inlet 111 is connected to the second cavity. In this state (anchoring state), the cement slurry in the second cavity can flow into the anchor hole through the liquid inlet 111 to complete the grouting of the anchor hole.

[0081] In this method, the cement grout is injected from the depth of the anchor hole toward the opening of the anchor hole. This method is particularly suitable for anchor holes with greater depths. It can avoid the situation where the grout is injected from the opening of the anchor hole toward the depth of the anchor hole and the filling is incomplete, thereby further improving the anchoring effect of the anchoring device.

[0082] In some embodiments, the sliding block 5 is provided with a unidirectional through hole 51;

[0083] The fluid between the sliding block 5 and the head end of the anchor plug 1 can enter the space between the sliding block 5 and the tail end of the anchor plug 1 through the through hole 51. That is, the fluid in the first cavity can enter the second cavity through the through hole 51, while the fluid in the second cavity cannot enter the first cavity through the through hole 51.

[0084] Because some mud and water will accumulate in some of the drilled anchor holes, most of the mud and water in the anchor holes need to be extracted before grouting to avoid the mud and water affecting the setting effect of the injected cement grout.

[0085] After the anchoring device is pushed, if there is a lot of mud and water inside the anchor hole, the level of the mud and water will be higher than the position of the liquid inlet 111. The mud and water will enter the first cavity from the liquid inlet 111 and enter the second cavity through the through hole 51. At this time, the workers can connect the suction end of the suction pump to the end of the pipe 3 away from the anchor plug 1 and use the suction pump to draw the mud and water out of the second cavity until the mud and water level is lower than the height of the liquid inlet 111, that is, when the mud and water can no longer enter the first cavity, stop.

[0086] After the mud and water are pumped out, grout can be injected into the anchor hole. The cement grout squeezes the sliding block 5, causing the sliding block 5 to slide in the direction of the insertion rod assembly 2 under pressure, and pushes the insertion rod assembly 2 so that the insertion rod assembly 2 slides from the initial position to the anchoring position, thus completing the state switching of the anchoring device.

[0087] It is worth noting that when the mud-water level is below the position of the liquid inlet 111, it is considered that the mud-water content is low and has little impact on the subsequent solidification of cement slurry. Therefore, it is not necessary to pump out the mud-water below the position of the liquid inlet 111.

[0088] Preferably, the sliding block 5 is provided with a sealing plate 52 on the side facing the second cavity. One side of the sealing plate 52 is hinged to the end face of the sliding block 5, and a torsion spring is provided at the hinge. Under normal conditions, the sealing plate 52 is blocked by the spring force of the torsion spring to achieve the effect of unidirectional conduction.

[0089] When it is necessary to pump out mud and water, the staff can first connect the end of the pipe body 3 away from the anchor plug 1 to the suction end of the suction pump. The suction pump can extract the air from the second chamber, making the inside of the second chamber a negative pressure state.

[0090] At this time, the first chamber is under normal pressure, and its pressure is greater than that of the second chamber. Under the action of pressure, the sealing plate 52 will rotate around its hinge, causing the through hole 51 to open. The mud and water that enters the first chamber through the liquid inlet 111 will enter the second chamber through the through hole 51 and be sucked out of the anchor hole by the suction pump, thus completing the extraction of mud and water.

[0091] After the mud and water are pumped out, the pump is removed and the second chamber is restored to normal pressure. The pressure in the first chamber and the second chamber are equal. The sealing plate 52 is sealed by the torsion spring force to block the through hole 51. Then, the grouting work can be carried out in the above manner.

[0092] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An anchoring device for slope protection, characterized in that: It includes an anchor plug (1), a plug assembly (2), a tube body (3), and an anchor cable (4); The anchor plug (1) is a tubular structure with closed ends. The outer wall of the anchor plug (1) is provided with a through hole (121) that communicates with the internal cavity of the anchor plug (1). The plug rod assembly (2) is slidably disposed in the cavity along the length direction of the anchor plug (1). One end of the anchor cable (4) is connected to the tail end of the anchor plug (1); One end of the tube (3) passes through the end wall of the anchor plug (1) and communicates with the cavity to introduce fluid into the cavity. The fluid pushes the plug assembly (2) to slide from the initial position to the anchor position. When the plug assembly (2) slides to the anchor position, the anchor end of the plug assembly (2) can pop out through the perforation (121) and extend to the outside of the anchor plug (1). The insertion rod assembly (2) includes an anchor rod (21), a slide (22), and a sleeve (23); The slide (22) is slidably disposed in the cavity along the length direction of the anchor plug (1); The sleeve (23) is a tubular structure closed at both ends. The sleeve (23) is set on the slide (22). The length direction of the sleeve (23) is perpendicular to the length direction of the anchor plug (1). A sliding hole is provided at one end of the sleeve (23) facing the cavity wall. The anchor rod (21) is slidably set at the sliding hole along the length direction of the sleeve (23). An elastic element (24) is provided between the anchor rod (21) and the bottom of the sleeve (23) to push the anchor rod (21) away from the bottom of the sleeve (23). It also includes a slider (5); The sliding block (5) is slidably disposed in the cavity along the length direction of the anchor plug (1), and the sliding block (5) is located on the side of the plug assembly (2) facing the tail end of the anchor plug (1); An anchor plug (1) has a liquid inlet (111) communicating with the cavity on its side wall; in the initial state, the liquid inlet (111) is located between the sliding block (5) and the head end of the anchor plug (1); in the anchored state, the liquid inlet (111) is located between the sliding block (5) and the tail end of the anchor plug (1). The sliding block (5) is provided with a unidirectional through hole (51); in the cavity, the fluid between the sliding block (5) and the head end of the anchor plug (1) can enter between the sliding block (5) and the head end of the anchor plug (1) through the through hole (51).

2. The anchoring device for slope protection according to claim 1, characterized in that: The tail end of the anchor rod (21) is provided with a limiting block (211) for locking the elastic element (24).

3. The anchoring device for slope protection according to claim 2, characterized in that: The number of sleeves (23) and anchor rods (21) is multiple. Multiple sleeves (23) are arranged at equal intervals around the central axis of the anchor plug (1) on the slide block (22). Multiple anchor rods (21) are slidably arranged at the sliding holes of multiple sleeves (23) in a corresponding manner.

4. The anchoring device for slope protection according to claim 3, characterized in that: The shape of the cross-section of the slide (22) matches the shape of the cross-section of the cavity.

5. The anchoring device for slope protection according to any one of claims 1 to 4, characterized in that: The number of the plug assembly (2) is multiple, and the multiple plug assemblies (2) are arranged along the length direction of the anchor plug (1).

6. The anchoring device for slope protection according to claim 1, characterized in that: The anchor plug (1) includes a first cylindrical body (11) and a second cylindrical body (12); Both the first cylinder (11) and the second cylinder (12) are tubular structures with one open end. The open end of the first cylinder (11) and the open end of the second cylinder (12) are connected by threads. One end of the anchor cable (4) is connected to the closed end of the first cylinder (11).

7. The anchoring device for slope protection according to claim 6, characterized in that: The closed end of the second cylinder (12) is a pointed cone-shaped structure that protrudes away from the first cylinder (11).

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