Anchoring device for preventing landslide geological disasters and construction method

Abstract

The application belongs to the technical field of landslide treatment, and discloses an anchoring device and a construction method for preventing landslide geological disasters, which comprises an anchor rod, the inside of which is hollow and both ends of which are open, a plurality of through openings are formed in the side wall of the anchor rod along the extension direction of the anchor rod, a grouting rod is arranged in the anchor rod, the slurry in the grouting rod is communicated with the inside of the anchor rod through the grouting holes in the side wall of the grouting rod, the side wall of the grouting rod is provided with a reinforcing piece, a plurality of sleeve ring pieces are arranged on the reinforcing piece, the reinforcing piece is fixed on the grouting rod through the plurality of sleeve ring pieces, one end of a plurality of deformation connecting pieces is fixed on the outer wall of the sleeve ring piece in a circumferential direction, the other end of the deformation connecting piece is slidably connected with the inner wall of the anchor rod when the grouting rod is inserted into the anchor rod, and the other end of the deformation connecting piece is inserted into the through opening and extends out of the anchor rod when the grouting rod is pulled out of the anchor rod. The application can improve the connecting strength of the anchor rod and the slope, and further improve the reinforcing effect on the slope.

Description

Technical Field

[0001] This invention belongs to the field of landslide control technology, and in particular relates to an anchoring device and construction method for preventing landslide geological disasters. Background Technology

[0002] Slopes are common engineering structures in civil engineering construction, such as mining, highway construction, railway construction, and foundation pit construction. During construction, steep slopes with large gradients are formed on mountains. In order to avoid geological disasters such as landslides, it is necessary to drill holes on the slope, install anchor rods in the holes, and then inject grout to reinforce the slope.

[0003] However, in existing technologies, anchor bolts are mostly single-bar structures. After the bar structure is inserted into the borehole and grout is injected, the connection strength between the anchor bolt and the slope is not ideal. After a period of time, the anchor bolt may move outward and detach from the slope, resulting in poor slope reinforcement.

[0004] Therefore, this invention provides anchoring devices and construction methods for preventing landslide geological hazards, designs anchor structures and anchor driving methods into slopes, improves the connection strength between anchors and slopes, and thus improves the reinforcement effect of slopes. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention proposes an anchoring device and construction method for preventing landslide geological disasters, which can improve the connection strength between the anchor rod and the slope, thereby enhancing the slope reinforcement effect.

[0006] To achieve the above objectives, the present invention provides an anchoring device for preventing landslide geological hazards, comprising:

[0007] An anchor bolt is hollow inside and open at both ends, and several through-holes are provided on the side wall of the anchor bolt along the extension direction of the anchor bolt.

[0008] A grouting rod is inserted inside the anchor rod. The grout inside the grouting rod communicates with the inside of the anchor rod through grouting holes on the side wall of the grouting rod. A reinforcing member is provided on the side wall of the grouting rod. Several collar members are provided on the outer sleeve of the reinforcing member. The reinforcing member is fixed to the grouting rod by the several collar members.

[0009] One end of a plurality of deformable connecting pieces is fixed circumferentially on the outer wall of the collar. When the grouting rod is inserted into the anchor rod, the other end of the deformable connecting piece is slidably connected to the inner wall of the anchor rod. When the grouting rod is pulled out of the anchor rod, the other end of the deformable connecting piece is inserted into the through-hole and extends out of the anchor rod.

[0010] A connecting end is fixed to the end of the grouting rod. The connecting end is provided with an opening member. When the connecting end passes through the anchor rod and is located at the bottom of the borehole, the opening member opens at the bottom of the borehole.

[0011] Furthermore, the collar component includes a collar plate sleeved on the outside of the grouting rod, a gap is provided between the outer wall of the collar plate and the inner wall of the anchor rod, one end of the deformable connecting piece is circumferentially fixed to the outer wall of the collar plate, and the other end of the deformable connecting piece presses against the inner wall of the anchor rod.

[0012] Furthermore, the opening includes a first semicircular opening and a second semicircular opening. The first semicircular opening is located on the inner wall of the anchor rod, and the second semicircular opening is located on the outer wall of the anchor rod. The area of ​​the second semicircular opening is smaller than the area of ​​the first semicircular opening. The first semicircular opening and the second semicircular opening are connected through a deformation channel. The end of the deformable connecting piece away from the grouting rod extends into the first semicircular opening. The deformable connecting piece is deformed into an arc shape with its opening facing the slope surface through the deformation channel. After passing through the deformation channel, the deformable connecting piece extends out from the second semicircular opening, and the end of the deformable connecting piece extends into the soil.

[0013] Furthermore, the inner wall of the anchor rod is provided with several guide grooves. The guide grooves are located on the side of the first semicircular opening near the bottom of the borehole. The guide grooves are connected to the first semicircular opening and are used to guide the deformable connecting piece into the first semicircular opening.

[0014] Furthermore, the grouting hole is circumferentially formed on the side wall of the grouting rod, and the grouting hole is correspondingly arranged with the first semi-circular opening.

[0015] Furthermore, the reinforcement includes at least two steel strands disposed on the side wall of the grouting rod, the steel strands being located inside the collar plate and fixed to the outer wall of the grouting rod by the collar plate, and the grouting hole being opened between two adjacent steel strands.

[0016] Furthermore, the connecting end includes a tapered head fixed to the end of the grouting rod. The diameter of the end face of the tapered head away from the end of the grouting rod is smaller than the diameter of the end face of the tapered head near the end of the grouting rod. The end face of the tapered head near the end of the grouting rod is adapted to the inner wall of the anchor rod.

[0017] Furthermore, the conical head has a plurality of receiving grooves circumferentially formed on its side wall, and the opening member includes an opening plate disposed in the receiving groove. A rotating rod is provided at one end of the opening plate away from the end of the grouting rod. Both ends of the rotating rod are fixedly connected to the conical head, and the opening plate is rotatably connected to the rotating rod.

[0018] When the conical head is located inside the anchor rod, the opening plate is located inside the receiving groove. When the conical head is located outside the anchor rod and at the bottom of the borehole, the end of the opening plate away from the rotating rod leaves the receiving groove.

[0019] Furthermore, a connecting ring plate is fixed to one end of the anchor rod located on the slope surface. The diameter of the borehole is smaller than the diameter of the connecting ring plate. The connecting ring plate is used to limit the anchor rod. A gap is provided between the connecting ring plate and the bottom wall of the borehole at the end of the anchor rod away from the connecting ring plate. The gap is used to accommodate the connecting end.

[0020] A construction method for an anchoring device used to prevent landslide geological hazards, comprising the following steps:

[0021] S1. Drill holes in the slope surface;

[0022] S2. Insert anchor bolts into the borehole and bring the connecting ring plate into contact with the slope surface;

[0023] S3. Insert the grouting rod and the reinforcement into the anchor rod, send the connecting end into the bottom of the borehole, and the opening part automatically opens after the connecting end leaves the anchor rod.

[0024] S4. Pull back the grouting rod. After the end of the deformable connecting piece passes through the opening and is inserted into the soil, stop pulling back the grouting rod.

[0025] S5. Grouting is performed into the grouting rod. The grout enters the anchor rod and the borehole. After the grout solidifies, the anchor rod is fixed to the slope.

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

[0027] 1. Grouting is injected into the anchor rod and the borehole using a grouting rod. At the same time, before grouting, the grouting rod is pulled back a certain distance so that the deformable connecting plate is inserted into the soil around the anchor rod through the through-hole. On the one hand, the deformable connecting plate connects the anchor rod to the surrounding soil. On the other hand, during grouting, the deformable connecting plate can be used as a channel structure to transport grout, injecting grout into the surrounding soil and improving the connection strength between the anchor rod and the soil.

[0028] 2. A connecting end is provided at the end of the grouting rod. When the grouting rod extends into the anchor rod and the connecting end extends out of the anchor rod and enters the bottom of the borehole, the opening element is no longer bound by the inner wall of the anchor rod and opens up, expanding the laying area of ​​the connecting end at the bottom of the borehole. Furthermore, after subsequent grouting, it can improve the connection strength between the anchor rod and the soil around the bottom of the borehole. Attached Figure Description

[0029] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0030] Figure 1 This is a 3D view of the deformable connecting piece without extending out of the anchor bolt.

[0031] Figure 2 for Figure 1 Exploded view;

[0032] Figure 3 A three-dimensional view of the deformable connecting piece extending from the anchor bolt;

[0033] Figure 4 for Figure 3 Exploded view;

[0034] Figure 5 A cross-sectional view showing the deformable connecting piece extending from the anchor bolt;

[0035] Figure 6 This is a sectional view of the opening;

[0036] Figure 7 for Figure 6 The front view;

[0037] Figure 8 A 3D view of the connecting end;

[0038] Figure 9 for Figure 8 A magnified view of a section at point A in the middle;

[0039] Figure 10 This is a perspective view of Example 3;

[0040] Among them, 1-anchor rod, 2-through opening, 3-grouting rod, 4-deformable connecting piece, 5-connecting end, 6-ring plate, 7-first semicircular opening, 8-second semicircular opening, 9-deformation channel, 10-guide groove, 11-steel strand, 12-conical head, 13-accommodating groove, 14-opening plate, 15-rotating rod, 16-connecting ring plate, 17-grouting hole, 18-support seat, 19-connecting rod, 20-limiting plate, 21-limiting block. Detailed Implementation

[0041] 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.

[0042] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] Example 1

[0044] Reference Figures 1-8 This invention provides an anchoring device for preventing landslide geological hazards, comprising: an anchor rod 1, which is hollow inside and open at both ends, and a plurality of through-holes 2 are provided on the side wall of the anchor rod 1 along the extension direction of the anchor rod 1. The anchor rod 1 is a tubular structure, and a hole is pre-drilled on the slope surface. The diameter of the hole is not less than the outer diameter of the anchor rod 1, so that the anchor rod 1 can be inserted into the hole. The through-holes 2 on the side wall of the anchor rod 1 allow the deformable connecting piece 4 to extend out of the anchor rod 1, and also allow the grout inside the anchor rod 1 to enter through the through-holes 2 to fill the gap between the outer wall of the anchor rod 1 and the inner wall of the hole.

[0045] Grouting rod 3 is inserted into anchor rod 1. The grout inside grouting rod 3 communicates with anchor rod 1 through grouting hole 17 on side wall of grouting rod 3. Reinforcing member is provided on side wall of grouting rod 3. Several collar members are provided on the outer sleeve of reinforcing member. Reinforcing member is fixed to grouting rod 3 by several collar members.

[0046] Understandably, the grouting rod 3 is used to inject grout into the anchor rod 1 and the borehole. The diameter of the grouting rod 3 is smaller than the inner diameter of the anchor rod 1, so that the grouting rod 3 can move inside the anchor rod 1. The reinforcement is used to strengthen the strength of the grouting rod 3, and at the same time, it makes the surface of the grouting rod 3 uneven, which improves the connection strength between the grouting rod 3 and the anchor rod 1 during subsequent grouting. The collar is sleeved on the grouting rod 3, and the reinforcement is fixed on the grouting rod 3 by the tightening action of the collar.

[0047] Several deformable connecting pieces 4 are fixed circumferentially on one end of the outer wall of the collar. When the grouting rod 3 is inserted into the anchor rod 1, the other end of the deformable connecting piece 4 is slidably connected to the inner wall of the anchor rod 1. When the grouting rod 3 is pulled out of the anchor rod 1, the other end of the deformable connecting piece 4 is inserted into the through-hole 2 and extends out of the anchor rod 1.

[0048] Among them, the deformable connecting piece 4 has a certain elasticity and can deform under the action of external force. During the process of the grouting rod 3 extending into the anchor rod 1, the deformable connecting piece 4 has a tendency to expand outward. Therefore, during the movement of the grouting rod 3, the end of the deformable connecting piece 4 on the collar squeezes the inner wall of the anchor rod 1 and slides and connects with the inner wall of the anchor rod 1. After the connecting end 5 leaves the anchor rod 1, that is, the connecting end 5 extends into the bottom of the borehole, the grouting rod 3 stops extending further and pulls back the grouting rod 3 a distance. When the deformable connecting piece 4 passes through the through-hole 2, the end of the deformable connecting piece 4 extends outward and enters the through-hole 2. At the same time, the end of the deformable connecting piece 4 extends out of the anchor rod 1 and inserts into the surrounding soil.

[0049] Specifically, the deformable connecting piece 4 has a certain degree of elasticity and can deform under external force. For example, the deformable connecting piece 4 is a thin steel or iron sheet. It does not need to have a large elastic force; it only needs to ensure that the end of the deformable connecting piece 4 contacts the inner wall of the anchor rod 1 and has a tendency to extend outward after the grouting rod 3 is inserted into the anchor rod 1.

[0050] The connecting end 5 is fixed to the end of the grouting rod 3. The connecting end 5 is provided with an opening member. When the connecting end 5 passes through the anchor rod 1 and is located at the bottom of the borehole, the opening member opens at the bottom of the borehole.

[0051] Understandably, when the connecting end 5 moves inside the anchor rod 1, the inner wall of the anchor rod 1 and the opening member limit it, preventing it from opening. When the connecting end 5 leaves the anchor rod 1 and is located at the bottom of the borehole, the opening member opens and is laid at the bottom of the borehole. At this time, the connecting end 5 can no longer enter the anchor rod 1, that is, the grouting rod 3 cannot be completely pulled out of the anchor rod 1. The grouting rod 3 can only be pulled back a certain distance inside the anchor rod 1. This pull-back distance is used for the deformation connecting piece 4 to extend out of the opening 2.

[0052] Further optimize the plan, referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 The collar component includes a collar plate 6 sleeved on the outside of the grouting rod 3. A gap is provided between the outer wall of the collar plate 6 and the inner wall of the anchor rod 1. One end of the deformable connecting piece 4 is circumferentially fixed to the outer wall of the collar plate 6, and the other end of the deformable connecting piece 4 presses against the inner wall of the anchor rod 1.

[0053] Understandably, the collar plate 6 is a circular structure, and there is a gap between the collar plate 6 and the outer wall of the grouting rod 3. This gap is used to accommodate the reinforcement. At the same time, the collar plate 6 serves as the base of the deformable connecting piece 4, which is used to fix one end of the deformable connecting piece 4 and drive the deformable connecting piece 4 to move.

[0054] Further optimize the plan, referring to Figure 5 , Figure 6 , Figure 7 The opening 2 includes a first semicircular opening 7 and a second semicircular opening 8. The first semicircular opening 7 is opened on the inner wall of the anchor rod 1, and the second semicircular opening 8 is opened on the outer wall of the anchor rod 1. The area of ​​the second semicircular opening 8 is smaller than the area of ​​the first semicircular opening 7. The first semicircular opening 7 and the second semicircular opening 8 are connected through a deformation channel 9. The end of the deformation connecting piece 4 away from the grouting rod 3 extends into the first semicircular opening 7. The deformation connecting piece 4 is deformed into an arc shape with the opening facing the slope surface through the deformation channel 9. After passing through the deformation channel 9, the deformation connecting piece 4 extends out from the second semicircular opening 8, and the end of the deformation connecting piece 4 extends into the soil.

[0055] Specifically, during the pullback of the grouting rod 3, the deformable connecting piece 4 enters the first semicircular opening 7. As the grouting rod 3 continues to pull back, since the deformable connecting piece 4 cannot detach from the first semicircular opening 7, the remaining part of the deformable connecting piece 4 moves towards the deformation channel 9. When the deformable connecting piece 4 moves within the deformation channel 9, under the structural action of the inner wall of the deformation channel 9, the deformable connecting piece 4 is squeezed and deformed into an arc-shaped structure. Finally, the arc-shaped deformable connecting piece 4 extending from the second semicircular opening 8 is inserted into the soil.

[0056] When this structure is set up, since the arc-shaped opening of the deformable connecting piece 4 faces the slope surface, the deformable connecting piece 4 is inserted into the soil to form barbs, making it difficult for the anchor rod 1 to detach from the soil. At the same time, during the grouting process, the grout is injected into the soil through the first semi-circular opening 7, the deformation channel 9, the second semi-circular opening 8, and the arc-shaped deformable connecting piece 4. The arc-shaped deformable connecting piece 4 can play a guiding role and improve the effect of grout injection into the soil.

[0057] Specifically, the first semicircular opening 7 and the second semicircular opening 8 are a flat top surface and an arc-shaped bottom surface. The flat top surface and the arc-shaped bottom surface work together to form a semicircular opening. At the same time, the flat top surface is located on the side of the arc-shaped bottom surface away from the bottom of the drill hole, ensuring that the deformable connecting piece 4 forms a barbed structure after deformation.

[0058] Further optimize the plan, referring to Figure 5 , Figure 6 , Figure 7 The inner wall of the anchor rod 1 is provided with several guide grooves 10. The guide grooves 10 are located on the side of the first semicircular opening 7 near the bottom of the borehole. The guide grooves 10 are connected to the first semicircular opening 7. The guide grooves 10 are used to guide the deformable connecting piece 4 into the first semicircular opening 7.

[0059] Understandably, the guide groove 10 is opened on the inner wall of the anchor rod 1. It is used to limit and guide the deformable connecting piece 4. During the pullback process of the grouting rod 3, the deformable connecting piece 4 first enters the guide groove 10 and is guided. Under the action of the guide groove 10, the deformable connecting piece 4 is guided into the first semi-circular opening 7, so as to avoid the deformable connecting piece 4 being unable to enter the first semi-circular opening 7.

[0060] Further optimize the plan, referring to Figure 2 , Figure 4 , Figure 6 , Figure 7 The grouting hole 17 is circumferentially opened on the side wall of the grouting rod 3, and the grouting hole 17 is correspondingly set with the first semi-circular opening 7.

[0061] With this structure, the grout delivered from the grouting hole 17 corresponds to the first semicircular opening 7. During the process of filling the anchor rod 1, the grout can easily enter the first semicircular opening 7 and be injected into the soil through the deformation channel 9, the second semicircular opening 8, and the arc-shaped deformation connecting piece 4.

[0062] Further optimize the plan, referring to Figure 2 , Figure 4 The reinforcement includes at least two steel strands 11 disposed on the side wall of the grouting rod 3. The steel strands 11 are located inside the collar plate 6 and are fixed to the outer wall of the grouting rod 3 by the collar plate 6. The grouting hole 17 is opened between two adjacent steel strands 11.

[0063] The steel strand 11 is fastened to the outer wall of the grouting rod 3 by the collar plate 6. The presence of the steel strand 11 can improve the strength of the grouting rod 3 and the strength of the anchor rod 1 after grouting. At the same time, due to the presence of the steel strand 11, the surface of the grouting rod 3 is uneven. This setting allows the grout to contact the grouting rod 3 better, improving the connection strength between the grouting rod 3, the anchor rod 1, and the surrounding soil.

[0064] Among them, the steel strands 11 can be two, three, four, five, etc. In this embodiment, four steel strands 11 are used as an example. At the same time, the grouting holes 17 are set between two adjacent steel strands 11, and the presence of steel strands 11 does not affect the flow of grout.

[0065] Further optimize the plan, referring to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8 The connecting end 5 includes a conical head 12 fixed to the end of the grouting rod 3. The diameter of the end face of the conical head 12 away from the end of the grouting rod 3 is smaller than the diameter of the end face of the conical head 12 near the end of the grouting rod 3. The end face of the conical head 12 near the end of the grouting rod 3 is adapted to the inner wall of the anchor rod 1.

[0066] Understandably, the end of the conical head 12 near the grouting rod 3 is adapted to the inner wall of the anchor rod 1. It is used to limit the opening part. The conical head 12 is a guide head or a guide head. The conical head 12 has a certain weight and is adapted to the inner wall of the anchor rod 1, so it can be relatively easy to send the grouting rod 3 to the depth of the borehole and finally into the bottom of the borehole.

[0067] Further optimize the plan, referring to Figure 8 The conical head 12 has several receiving grooves 13 circumferentially opened on its side wall. The opening member includes an opening plate 14 disposed in the receiving groove 13. A rotating rod 15 is inserted through one end of the opening plate 14 away from the end of the grouting rod 3. Both ends of the rotating rod 15 are fixedly connected to the conical head 12. The opening plate 14 and the rotating rod 15 are rotatably connected.

[0068] Under the action of the rotating rod 15, the opening plate 14 can rotate relative to the conical head 12 under its own weight, so that the opening plate 14 opens away from the receiving groove 13.

[0069] When the conical head 12 is located inside the anchor rod 1, the opening plate 14 is located inside the receiving groove 13. The inner wall of the anchor rod 1 limits the opening plate 14, preventing it from leaving the receiving groove 13. When the conical head 12 is located outside the anchor rod 1 and at the bottom of the borehole, the end of the opening plate 14 away from the rotating rod 15 leaves the receiving groove 13. When the inner wall of the anchor rod 1 can no longer limit the opening plate 14, under its own weight, the opening plate 14 rotates around the rotating rod 15 as the center, and the other end leaves the receiving groove 13. Multiple opening plates 14 open and are circumferentially distributed around the conical head 12. After grouting is completed, the opening plates 14 are in effective contact with the grout, improving the connection strength between the anchor rod 1 and the grouting rod 3 and the surrounding soil.

[0070] Further optimize the plan, referring to Figure 1 An anchor rod 1 is fixed to a connecting ring plate 16 at one end on the slope surface. The diameter of the borehole is smaller than the diameter of the connecting ring plate 16. The connecting ring plate 16 is used to limit the anchor rod 1. A gap is provided between the end of the anchor rod 1 away from the connecting ring plate 16 and the bottom wall of the borehole. The gap is used to accommodate the connecting end 5.

[0071] Understandably, the connecting ring plate 16 is used to limit the anchor rod 1, that is, to determine the drilling depth. The length of the anchor rod 1 is less than the drilling depth, so that there is a gap between the end of the anchor rod 1 and the bottom of the drill hole for the conical head 12 to enter and for the opening plate 14 to open.

[0072] In addition, connecting steel bars can be fixed or connecting bolt holes can be opened on the connecting ring plate 16. During the slope anti-slip process, the anchor rod 1 can be used in conjunction with the protective plate or protective net. Therefore, the protective plate or protective net can be fixed on the connecting ring plate 16 without setting an additional connection structure on the anchor rod 1.

[0073] A construction method for an anchoring device used to prevent landslide geological hazards, comprising the following steps:

[0074] S1. Drill holes into the slope surface. Identify the slope to be reinforced, conduct preliminary exploration and determine the anchoring points, and drill holes into the anchoring points.

[0075] S2. Insert the anchor rod 1 into the borehole and bring the connecting ring plate 16 into contact with the slope surface. After drilling is completed, insert the anchor rod 1 into the borehole. Once the connecting ring plate 16 contacts the slope surface, the anchor rod 1 stops moving.

[0076] S3. Insert the grouting rod 3 and the reinforcement assembly into the anchor rod 1. Send the connecting end 5 into the bottom of the borehole. After the connecting end 5 leaves the anchor rod 1, the opening member automatically opens. Send the grouting rod 3, the steel strand 11, the collar plate 6, and the deformable connecting piece 4 on the grouting rod 3 into the anchor rod 1. After the conical head 12 leaves the anchor rod 1 and enters the bottom of the borehole, the opening plate 14 opens by its own weight, leaving the receiving groove 13.

[0077] S4. Pull back the grouting rod 3. After the end of the deformable connecting piece 4 passes through the opening 2 and inserts into the soil, stop pulling back the grouting rod 3. During the pullback process, the deformable connecting piece 4 enters the first semi-circular opening 7 under the action of the guide groove 10, deforms through the deformation channel 9, and is then led out through the second semi-circular opening 8 and inserted into the surrounding soil. Stop pulling back the grouting rod 3 once it can no longer move.

[0078] S5. Grouting is performed into grouting rod 3. The grout enters the anchor rod 1 and the borehole. After the grout solidifies, the anchor rod 1 is fixed to the slope. Grouting is performed into grouting rod 3 to fill the anchor rod 1 and the borehole. After the grout solidifies, the installation of the anchor rod 1 is completed.

[0079] Example 2

[0080] Reference Figure 9 Based on Example 1, a support base 18 is fixedly connected in the receiving groove. The support base 18 is located on the side of the rotating rod 15 away from the grouting rod 3. A connecting rod 19 is fixedly connected to the support base 18. A limit plate 20 is rotatably connected to the connecting rod 19. The limit plate 20 is used to limit the opening plate 14.

[0081] Specifically, the limiting plate 20 is connected to the connecting rod 19, and the connection point has significant friction. Changing the position of the limiting plate 20 requires manual rotation to move it, thereby altering the relative angle between the limiting plate 20 and the connecting rod 19. The side of the limiting plate 20 closest to the opening plate 14 contacts and supports the opening plate 14. With this structure, the opening angle of the opening plate 14 can be controlled by adjusting the tilt angle of the limiting plate 20.

[0082] Example 3

[0083] Reference Figure 10 Based on Embodiment 1 or Embodiment 2, a number of limiting blocks 21 are fixed to the inner wall of the anchor rod 1. The limiting blocks 21 are located at the end of the anchor rod 1 near the connecting ring plate 16. The other end of the limiting blocks 21 corresponds to the two adjacent steel strands 11. The limiting blocks 21 are used to limit the grouting rod 3.

[0084] By setting a limiting block 21, the steel strand 11 is limited. During the process of the grouting rod 3 extending into the anchor rod 1, the grouting rod 3 cannot rotate. Therefore, after the grouting rod 3 extends into the anchor rod 1, the deformable connecting piece 4 always corresponds to the first semi-circular opening 7.

[0085] The above are merely preferred embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An anchoring device for preventing landslide geological hazards, characterized in that: include: Anchor rod (1) is hollow inside and open at both ends. Several through holes (2) are provided on the side wall of the anchor rod (1) along the extension direction of the anchor rod (1). The grouting rod (3) is inserted into the anchor rod (1). The grout inside the grouting rod (3) communicates with the anchor rod (1) through the grouting hole (17) on the side wall of the grouting rod (3). The side wall of the grouting rod (3) is provided with a reinforcing member. The reinforcing member is fitted with several collar pieces. The reinforcing member is fixed to the grouting rod (3) by several collar pieces. One end of several deformable connecting pieces (4) is fixed circumferentially on the outer wall of the collar. When the grouting rod (3) is inserted into the anchor rod (1), the other end of the deformable connecting piece (4) is slidably connected to the inner wall of the anchor rod (1). When the grouting rod (3) is pulled out of the anchor rod (1), the other end of the deformable connecting piece (4) is inserted into the opening (2) and extends out of the anchor rod (1). The connecting end (5) is fixed to the end of the grouting rod (3). The connecting end (5) is provided with an opening member. When the connecting end (5) passes through the anchor rod (1) and is located at the bottom of the borehole, the opening member automatically opens at the bottom of the borehole. The collar component includes a collar plate (6) sleeved on the outside of the grouting rod (3), and a gap is provided between the outer wall of the collar plate (6) and the inner wall of the anchor rod (1). One end of the deformable connecting piece (4) is circumferentially fixed to the outer wall of the collar plate (6), and the other end of the deformable connecting piece (4) presses against the inner wall of the anchor rod (1). The opening (2) includes a first semicircular opening (7) and a second semicircular opening (8). The first semicircular opening (7) is opened on the inner wall of the anchor rod (1), and the second semicircular opening (8) is opened on the outer wall of the anchor rod (1). The area of ​​the second semicircular opening (8) is smaller than the area of ​​the first semicircular opening (7). The first semicircular opening (7) and the second semicircular opening (8) are connected through a deformation channel (9). The end of the deformable connecting piece (4) away from the grouting rod (3) extends into the first semicircular opening (7). The deformable connecting piece (4) is deformed into an arc shape with its opening facing the slope surface through the deformation channel (9). After passing through the deformation channel (9), the deformable connecting piece (4) extends out from the second semicircular opening (8), and the end of the deformable connecting piece (4) extends into the soil.

2. The anchoring device for preventing landslide geological hazards according to claim 1, characterized in that: The inner wall of the anchor rod (1) is provided with several guide grooves (10). The guide grooves (10) are located on the side of the first semi-circular opening (7) near the bottom of the borehole. The guide grooves (10) are connected to the first semi-circular opening (7). The guide grooves (10) are used to guide the deformable connecting piece (4) into the first semi-circular opening (7).

3. The anchoring device for preventing landslide geological hazards according to claim 1, characterized in that: The grouting hole (17) is circumferentially opened on the side wall of the grouting rod (3), and the grouting hole (17) is correspondingly set with the first semi-circular opening (7).

4. The anchoring device for preventing landslide geological hazards according to claim 1, characterized in that: The reinforcement includes at least two steel strands (11) disposed on the side wall of the grouting rod (3). The steel strands (11) are located inside the collar plate (6) and are fixed to the outer wall of the grouting rod (3) through the collar plate (6). The grouting hole (17) is opened between two adjacent steel strands (11).

5. The anchoring device for preventing landslide geological hazards according to claim 1, characterized in that: The connecting end (5) includes a conical head (12) fixed to the end of the grouting rod (3). The diameter of the end face of the conical head (12) away from the end of the grouting rod (3) is smaller than the diameter of the end face of the conical head (12) near the end of the grouting rod (3). The end face of the conical head (12) near the end of the grouting rod (3) is adapted to the inner wall of the anchor rod (1).

6. The anchoring device for preventing landslide geological hazards according to claim 5, characterized in that: The conical head (12) has several accommodating grooves (13) circumferentially opened on its side wall. The opening member includes an opening plate (14) disposed in the accommodating groove (13). A rotating rod (15) is provided at one end of the opening plate (14) away from the end of the grouting rod (3). Both ends of the rotating rod (15) are fixedly connected to the conical head (12). The opening plate (14) and the rotating rod (15) are rotatably connected. When the conical head (12) is located inside the anchor rod (1), the opening plate (14) is located inside the receiving groove (13). When the conical head (12) is located outside the anchor rod (1) and at the bottom of the borehole, the end of the opening plate (14) away from the rotating rod (15) leaves the receiving groove (13).

7. The anchoring device for preventing landslide geological hazards according to claim 1, characterized in that: The anchor rod (1) is fixed to a connecting ring plate (16) at one end on the slope surface. The diameter of the borehole is smaller than the diameter of the connecting ring plate (16). The connecting ring plate (16) is used to limit the anchor rod (1). A gap is provided between the end of the anchor rod (1) away from the connecting ring plate (16) and the bottom wall of the borehole. The gap is used to accommodate the connecting end (5).

8. A construction method for an anchoring device for preventing landslide geological hazards, as described in claim 7, characterized in that: The construction steps include: S1. Drill holes in the slope surface; S2. Insert the anchor rod (1) into the borehole and make the connecting ring plate (16) contact the slope surface; S3. Insert the grouting rod (3) and the reinforcement into the anchor rod (1), send the connecting end (5) into the bottom of the borehole, and the opening part automatically opens after the connecting end (5) leaves the anchor rod (1). S4. Pull back the grouting rod (3), and after the end of the deformable connecting piece (4) passes through the opening (2) and is inserted into the soil, stop pulling back the grouting rod (3); S5. Grouting is performed into the grouting rod (3). The grout enters the anchor rod (1) and the borehole. After the grout solidifies, the anchor rod (1) is fixed to the slope.

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