Slope protection collapse prevention device for engineering construction

Abstract

The invention discloses a slope protection collapse prevention device for engineering construction, comprising: a plurality of prefabricated frames arranged in an array and laid along the slope surface of the slope protection, the prefabricated frames being set as rectangular lattice type frame body structures; the center of the structural frame is arranged in each prefabricated frame to form a bearing connection point; the anti-seismic support is connected to the structural frame, and one end of the anti-seismic support is connected with the four corners of the interior of the prefabricated frame to form a space truss structure; the anchor bolt unit is vertically inserted into the slope protection soil layer, and the upper end of the anchor bolt unit is connected with the structural frame.

Description

Technical Field

[0001] The present invention belongs to the technical field of slope protection and support, and specifically relates to a slope anti-collapse device for engineering construction. Background Technique

[0002] The slope anti-collapse device is a key structure in civil engineering for stabilizing slopes and preventing soil sliding or collapse. Traditional slope protection technologies mainly include retaining walls, anchor rod support, shotcrete, lattice beams, etc. The core principle is to apply binding forces to the slope body through rigid or semi-rigid structures. In recent years, with the complication of engineering environments, such as large-scale projects and areas with heavy rainfall, slope protection technologies have gradually developed towards seismic strengthening and intelligent response; however, traditional slope protection structures mostly adopt a single rigidity, such as concrete retaining walls; or elastic support modes (such as geogrids), which cannot dynamically switch according to the stress state of the slope body, resulting in the gradual deformation and collapse of the slope protection.

[0003] Therefore, it is necessary to provide a slope anti-collapse device for engineering construction to solve the problems raised in the above background technique. Summary of the Invention

[0004] To achieve the above object, the present invention provides the following technical solution: A slope anti-collapse device for engineering construction, which includes:

[0005] Prefabricated frames, which are multiple arranged in a row and are laid out in an array along the slope surface of the slope. The prefabricated frames are set as rectangular lattice-type frame structures;

[0006] Structure frames, which are centered within each of the prefabricated frames to form load-bearing connection points;

[0007] Seismic brackets, which are connected to the structure frames. One end of the seismic brackets is connected to the four corner positions inside the prefabricated frames to form a space truss structure;

[0008] Anchor bolt units, which are vertically inserted into the slope soil layer. The upper ends of the anchor bolt units are connected to the structure frames.

[0009] Furthermore, as a preference, the seismic brackets include:

[0010] Vertical shaft rods, which are fixed inside the structure frames and are arranged parallel to the long sides of the prefabricated frames. A shaft collar is fixed at the center inside the structure frames, and one end of the vertical shaft rod is fixed to the shaft collar;

[0011] Side shaft rods, which are symmetrically arranged inside the structure frames. The ends of each side shaft rod are fixedly connected to the shaft collar;

[0012] Sliding sleeves, which are slidably connected to the vertical shaft rods and the side shaft rods;

[0013] The upper damping rod is symmetrically and hingedly connected to the upper corner position of the prefabricated frame through a universal joint, and the other ends of the upper damping rods are rotatably connected to the sliding sleeves of the vertical shaft rods;

[0014] The lower damping rods are two symmetrically arranged and are respectively hinged to the lower corner positions of the prefabricated frame, and the other ends of the lower damping rods are rotatably connected to the sliding sleeves on the side shaft rods;

[0015] The outer spring is sleeved on the vertical shaft rod and the side shaft rod.

[0016] Furthermore, preferably, limit blocks are slidably arranged on both the vertical shaft rod and the side shaft rod. One end of the outer spring abuts against the limit block, and a screw rod is horizontally and rotatably connected to the collar. The limit block is threadedly connected to the screw rod.

[0017] Furthermore, preferably, the anchor bolt unit includes:

[0018] The anchoring seat is embedded in the bearing layer of the slope of the slope protection, and an anchor column is centrally arranged on the anchoring seat;

[0019] The anchor pipe sleeve is coaxially and slidably sleeved outside the anchor column, and the upper end of the anchor pipe sleeve is connected to the structural frame;

[0020] The shock-absorbing spring is sleeved on the anchor column, and the lower end of the shock-absorbing spring abuts against the bottom surface of the inner cavity of the anchor pipe;

[0021] The grouting and curing unit is integrated inside the anchor column.

[0022] Furthermore, preferably, the grouting and curing unit includes:

[0023] The sealing cavity is centrally opened in the anchor column, and dry concrete is filled in the sealing cavity;

[0024] The water storage pipes are multiple and are circumferentially distributed. Each water storage pipe is fixed on the anchor column, and one end of the water storage pipe extending into the sealing cavity is sleeved with a bladder;

[0025] The axial push plate is slidably arranged in the sealing cavity and is located below the water storage pipes. The upper end surface of the axial push plate is distributed with a plurality of taper pins corresponding to the water storage pipes;

[0026] The sliding rods are vertically and symmetrically connected to the lower end surface of the axial push plate. Each sliding rod is slidably connected in the anchor column, and one end of each sliding rod is in contact with the bottom surface of the inner cavity of the anchor pipe sleeve. A return spring is sleeved on the sliding rod;

[0027] The side holes are circumferentially distributed on the side wall of the anchor column and are communicated with the sealing cavity;

[0028] The injection hole grooves are circumferentially opened on the outer wall of the anchor pipe sleeve and are located below the side holes.

[0029] Furthermore, preferably, each of the injection hole grooves is slidably docked with at least two side holes; and when the shaft push plate is axially pushed to the highest position by the sliding rod, the shaft push plate directionally pressurizes and discharges 70% of the concrete slurry in the sealing cavity through the side holes.

[0030] Furthermore, as a preference, the anchor sleeve is provided with soil-breaking cone teeth located above each injection hole groove distributed circumferentially;

[0031] An annular groove is provided on the circumferential side wall of the anchor column, and a plurality of clamping blocks are distributed in the anchor sleeve, and the clamping blocks are engaged with the annular groove when the anchor sleeve slides.

[0032] Further, as a preference, the anchor column is rotatably connected to the anchor seat, and a spiral guide groove is axially provided on the side wall of the anchor column, an axis pin is fixed to the inner wall of the anchor sleeve, and the axis pin is slidably embedded in the spiral guide groove, so that when the anchor sleeve slides along the axial direction of the anchor column, the anchor column is synchronously driven to deflect in the forward and reverse directions;

[0033] A shaft cylinder is coaxially fixed to the upper end of the anchor sleeve, an inner rod is rotatably connected inside the shaft cylinder, and the lower end of the inner rod extends into the anchor column and forms an axial sliding pair with the anchor column;

[0034] An eccentric counterweight is sleeved on the inner rod, and the center of mass of the eccentric counterweight is arranged away from the axis of the inner rod.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] In the present invention, a plurality of precast frames can be arrayed on the slope protection slope surface. The precast frames are installed on the slope protection slope body through anchor bolt units. An anti-seismic support is further arranged between the anchor bolt units and the precast frames. The anti-seismic support can elastically support the precast frames on the slope protection surface through the cooperation of the upper damping rod and the lower damping rod. The anchor columns used in the anchor bolt units can be buried in the bearing layer of the slope body of the slope protection through the anchor seats to form an anchoring structure. The anchor pipe sleeves are slidably sleeved outside the anchor columns, so as to further cooperate with the anti-seismic support to realize the elastic support of the precast frames. In particular, a grouting and solidifying unit is also arranged in the anchor columns. The grouting and solidifying unit can puncture the capsule bag when the anchor bolt unit reaches the ultimate tensile limit instantaneously, so that the concrete is mixed with water and discharged through the side holes. After the concrete is solidified, a fixing effect is formed among the anchor pipe sleeves, the anchor columns and the slope soil layer through concrete blocks, so that the precast frames form a rigid support, thereby realizing the dynamic conversion between elastic support and rigid support. On the one hand, under normal working conditions, the anti-seismic support can absorb dynamic loads such as micro-vibrations of the slope body and rainwater scouring through the elastic deformation of the sliding sleeve, damping rod and outer spring, avoiding structural fatigue damage. On the other hand, when the tensile force of the anchor bolt unit reaches the critical value under extreme working conditions, the grouting and solidifying unit is automatically triggered, and the concrete slurry quickly fills the gap between the anchor pipe sleeve and the soil layer to form a rigid anchor body, and the anti-pulling bearing capacity is increased by 30%-50%, preventing collapse. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 is a schematic structural diagram of the present invention;

[0038] Figure 2 is a schematic structural diagram of the anti-seismic support in the present invention;

[0039] Figure 3 is a schematic installation structural diagram of the limit block in the present invention;

[0040] Figure 4 is a schematic structural diagram of the anchor bolt unit in the present invention;

[0041] Figure 5 is a schematic structural diagram of the grouting and solidifying unit in the present invention;

[0042] Figure 6 is Figure 4 a schematic enlarged structural diagram of part A in

[0043] In the figure: 1. prefabricated frame; 11. structural frame; 2. seismic support; 21. vertical shaft rod; 22. side shaft rod; 23. sliding sleeve; 24. upper damping rod; 25. lower damping rod; 26. outer spring; 27. limit block; 28. screw; 3. anchor bolt unit; 31. anchor seat; 32. anchor pipe sleeve; 33. shock-absorbing spring; 4. anchor column; 41. annular groove; 42. block; 43. shaft nail; 44. shaft cylinder; 45. inner rod; 46. eccentric counterweight; 5. grouting curing unit; 51. sealing chamber; 52. water storage pipe; 53. bladder bag; 54. shaft push plate; 55. sliding rod; 56. side hole; 57. injection hole slot; 58. ground-breaking cone tooth. DETAILED DESCRIPTION

[0044] See also Figures 1-6 In an embodiment of the present invention, a slope protection and anti-collapse device for engineering construction includes:

[0045] The prefabricated frames 1 are arranged in a plurality and laid in an array along the slope protection surface. The prefabricated frames 1 are arranged as rectangular lattice frame structures, the interior of which can be used as planting troughs. Part of the rectangular lattice can be filled with concrete for reinforcement, which not only ensures the structural strength but also provides space for vegetation growth. The vegetation coverage rate of the slope surface is increased by more than 50%, and an installation gap of 0.4m-0.6m is left between adjacent prefabricated frames 1;

[0046] A structural frame 11, centrally disposed within each of the prefabricated frames 1, forming a load-bearing connection point;

[0047] An earthquake-resistant support 2 is connected to the structural frame 11, and one end of the earthquake-resistant support 2 is connected to the four inner corners of the prefabricated frame 1 to form a spatial truss structure;

[0048] The anchor bolt unit 3 is vertically inserted into the slope protection soil layer, and the upper end of the anchor bolt unit 3 is connected to the structural frame 11. The anchor bolt unit 3 can set up the prefabricated frame 1 on the surface of the slope protection slope through the structural frame 11.

[0049] In this embodiment, the anti-seismic support 2 includes:

[0050] A vertical shaft rod 21 is fixed in the structural frame 11 and arranged parallel to the long side of the prefabricated frame 1. A shaft ring 12 is fixed in the center of the structural frame 11, and one end of the vertical shaft rod 21 is fixed to the shaft ring 12;

[0051] Side shaft rods 22 are symmetrically arranged in the structural frame 11, and the ends of each side shaft rod 22 are fixedly connected to the shaft ring 12;

[0052] The sliding sleeve 23 is slidably connected to the vertical shaft rod 21 and the side shaft rod 22;

[0053] The upper damping rod 24 is symmetrically hinged at the upper corner position of the prefabricated frame 1 through a universal joint, and the other ends of the upper damping rods 24 are rotatably connected to the sliding sleeves 23 of the vertical shaft rods 21;

[0054] The lower damping rods 25 are two symmetrically arranged and are respectively hinged at the lower corner positions of the prefabricated frame 1, and the other ends of the lower damping rods 25 are rotatably connected to the sliding sleeves 23 on the side shaft rods 22; wherein, the upper damping rods 24 and the lower damping rods 25 can realize the directional absorption and dispersion of the slope vibration energy in mutual cooperation;

[0055] The outer spring 26 is sleeved on the vertical shaft rod 21 and the side shaft rod 22; when the slope protection is vibrated by engineering operations, the upper damping rod 24 and the lower damping rod 25 gradually compress the outer spring 26 towards the side close to the shaft collar 12 through the sliding sleeve 23, so as to cooperate with the upper damping rod 24 and the lower damping rod 25 to inhibit the up and down vibration of the frame.

[0056] As a preferred embodiment, limit blocks 27 are slidably arranged on both the vertical shaft rod 21 and the side shaft rod 22, one end of the outer spring 26 abuts against the limit block 27, and a screw rod 28 is horizontally rotatably connected to the shaft collar 12, and the limit block 27 is threadedly connected to the screw rod 28. Among them, each seismic support 2 in the prefabricated frame 1 can change the initial installation compression amount of the outer spring 26 through the screw rod 28. Thus arranged, for example: for soft soil geology, its pre-tightening force can be set to 5-10 kN to increase the deformation space to adapt to soil creep; while for rocky slopes, the pre-tightening force is increased to 15-20 kN to enhance the rigid support.

[0057] In this embodiment, the anchor bolt unit 3 includes:

[0058] The anchoring seat 31 is embedded in the bearing layer of the slope of the slope protection, and an anchor post 4 is centrally arranged on the anchoring seat 31;

[0059] The anchor pipe sleeve 32 is coaxially and slidably sleeved outside the anchor post 4, and the upper end of the anchor pipe sleeve 32 is connected to the structural frame 11;

[0060] The shock-absorbing spring 33 is sleeved on the anchor post 4, and the lower end of the shock-absorbing spring 33 abuts against the bottom surface of the inner cavity of the anchor pipe 32;

[0061] The grouting and solidifying unit 5 is integrated inside the anchor post 32. Among them, when the surface of the slope protection slope is affected by vibration, the anchor pipe sleeve 32 can generate synchronous vibration displacement with the prefabricated frame 1, the anchor pipe sleeve 32 slides axially along the anchor post 4, and the shock-absorbing spring 33 generates compressive deformation, and 60%-70% of the vibration kinetic energy is converted into elastic potential energy; when rebounding, the remaining energy is dissipated through the friction damping between the anchor pipe sleeve and the anchor post.

[0062] In this embodiment, the grouting and solidifying unit 5 includes:

[0063] A sealed cavity 51, the center of which is opened in the anchor column 4, and the sealed cavity 51 is filled with dry concrete;

[0064] There are multiple water storage pipes 52 distributed around the circumference, each of which is fixed on the anchor column 4, and one end of the water storage pipe 52 extending into the sealed cavity 51 is sleeved with a bag 53;

[0065] The shaft push plate 54 is slidably disposed in the sealed cavity 51 and is located below the water storage pipe 52. A plurality of cone needles corresponding to the water storage pipe 52 are distributed on the upper end surface of the shaft push plate 54. The cone needles can pierce the bag 53 when the shaft push plate 54 slides to the limit position. The water in the bag 53 can be integrated with the concrete to form concrete slurry. When the concrete slurry is solidified, a rigid anchor body can be formed.

[0066] Slide rods 55 are vertically symmetrically connected to the lower end surface of the shaft push plate 54. Each of the slide rods 55 is slidably connected in the anchor column 4, and one end thereof contacts the bottom surface of the inner cavity of the anchor sleeve 32. A return spring is sleeved on the slide rod 55;

[0067] Side holes 56, circumferentially distributed on the side wall of the anchor column 4 and connected to the sealing cavity 51;

[0068] The injection hole groove 57 is circumferentially opened on the outer wall of the anchor sleeve 32 and is located below the side hole 56.

[0069] In this embodiment, each of the injection hole grooves 57 is slidably docked with at least two side holes 56. Such an arrangement allows the concrete slurry in the injection hole grooves 57 and the side holes 56 to form horizontal concrete ribs after solidification after the concrete slurry has fully flowed, thereby improving the connection strength of the solidification and forming, and further improving the anchoring effect between the anchor column 4 and the slope protection soil layer; and when the shaft push plate 54 is axially pushed to the highest position by the sliding rod, the shaft push plate 54 will directional pressure-discharge 70% of the concrete slurry in the sealing cavity 51 through the side holes 56, which can form a concrete anchor body with an initial setting strength ≥10MPa within 15 minutes, meeting the immediate anchoring requirements under sudden overload, wherein 30% of the concrete (about 2.1L) is retained in the sealing cavity 51, which can be synchronously solidified and formed with the concrete slurry flowing outside, thereby forming an overall anchoring structure.

[0070] As a preferred embodiment, a soil-breaking conical tooth 58 is fixedly arranged above each injection hole groove 57 in the circumferential distribution of the anchor pipe sleeve 32; the soil-breaking conical tooth 58 can break the soil inside around the anchor pipe sleeve 32 during the sliding of the anchor pipe sleeve 32. It cuts into the soil layer at a blade angle of 30°-45°, converting the continuous pile insertion resistance into periodic crushing force. On the one hand, it can reduce the pressing-in resistance of the anchor pipe sleeve 32 by 40%-50%. On the other hand, it can form corresponding grouting grooves, facilitating the inflow of concrete slurry into the grouting grooves for concrete forming to form radial anchoring ribs, forming mechanical interlock with the surrounding soil mass (wherein, the soil-breaking conical tooth 58 can also adopt an annular structure design to form an annular grouting groove around the anchor pipe sleeve 32, so as to achieve overall grouting and solidification, and the flexural stiffness of the cylindrical solidified body is increased by three times, which can inhibit the lateral flexural deformation of the anchor pipe sleeve 32).

[0071] A ring groove 41 is formed on the circumferential side wall of the anchor column 4, and a plurality of clamping blocks 42 are distributed in the anchor pipe sleeve 32. The clamping blocks 42 are clamped and matched with the ring groove 41 during the sliding of the anchor pipe sleeve 32. That is, when the anchor pipe sleeve 32 slides relative to the anchor column 4 to the limit position, the clamping blocks 42 can be clamped with the ring groove 41. At this time, the conversion from elastic anchor to directional rigid anchor is completed, and the structural stiffness is increased by 3-5 times, inhibiting further displacement of the slope body.

[0072] In this embodiment, the anchor column 4 is rotatably connected to the anchor seat 31, and a spiral guide groove is axially formed on the side wall of the anchor column 4. A shaft nail 43 is fixedly arranged on the inner wall of the anchor pipe sleeve 32, and the shaft nail 43 is slidably embedded in the spiral guide groove, so that when the anchor pipe sleeve 32 slides axially along the anchor column 4, the anchor column 4 is synchronously driven to deflect forward and backward.

[0073] An axial cylinder 44 is coaxially fixed at the upper end of the anchor pipe sleeve 32. An inner rod 45 is rotatably connected in the axial cylinder 44, and the lower end of the inner rod 45 extends into the anchor column 4 and forms an axial sliding pair with the anchor column 4.

[0074] An eccentric counterweight block 46 is sleeved on the inner rod 45, and the centroid of the eccentric counterweight block 46 deviates from the axis of the inner rod 45. Therefore, under normal working conditions, when the slope protection is subjected to slope vibration caused by engineering operations, the anchor pipe sleeve 32 generates reciprocating vibration displacement along the axis of the anchor column 4 with the precast frame 1, and the anchor column 4 deflects forward and backward. At this time, the inner rod 45 can synchronously rotate slowly with the anchor column 4, so that an inertial moment opposite to the slope vibration is generated by the eccentric counterweight block 46, and the vibration is offset by the centrifugal force. Among them, the lower end of the anchor column can be set to penetrate the anchor seat 31 and be screwed into the soil layer, which can further dynamically increase the instantaneous uplift force by 20%-30%. Moreover, when the anchor column 4 rotates, it generates a damping effect with the soil friction, converting 30%-40% of the vibration kinetic energy into heat energy dissipation, reducing the resonance risk of the anchor bolt unit, and the amplitude attenuation rate >50%.

[0075] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, making equivalent substitutions or changes should be covered by the protection scope of the present invention.

Claims

1. A slope anti-collapse device for engineering construction, characterized in that, It includes: Prefabricated frames (1), which are multiple and arranged in an array along the slope protection slope surface, and the prefabricated frames (1) are set as rectangular lattice frame structures; Structure frames (11), which are centered within each of the prefabricated frames (1) to form load-bearing connection points; Seismic brackets (2), which are connected to the structure frames (11), and one end of the seismic brackets (2) is connected to the inner four corners of the prefabricated frames (1) to form a space truss structure; Anchor bolt units (3), which are vertically inserted into the slope protection soil layer, and the upper ends of the anchor bolt units (3) are connected to the structure frames (11).

2. The slope protection and anti-collapse device for engineering construction according to claim 1, characterized in that: The seismic brackets (2) include: Vertical shaft rods (21), which are fixed within the structure frames (11) and arranged parallel to the long sides of the prefabricated frames (1), and a shaft collar (12) is fixedly centered within the structure frames (11), and one end of the vertical shaft rod (21) is fixed to the shaft collar (12); Side shaft rods (22), which are symmetrically arranged within the structure frames (11), and the ends of each of the side shaft rods (22) are fixedly connected to the shaft collar (12); Sliding sleeves (23), which are slidably connected to the vertical shaft rods (21) and the side shaft rods (22); Upper damping rods (24), which are symmetrically hinged to the upper corner positions of the prefabricated frames (1) through universal axes, and the other ends of each of the upper damping rods (24) are rotatably connected to the sliding sleeves (23) of the vertical shaft rods (21); Lower damping rods (25), which are two and symmetrically arranged, and are respectively hinged to the lower corner positions of the prefabricated frames (1), and the other ends of the lower damping rods (25) are rotatably connected to the sliding sleeves (23) on the side shaft rods (22); Outer springs (26), which are sleeved on the vertical shaft rods (21) and the side shaft rods (22).

3. The slope protection and anti-collapse device for engineering construction according to claim 2, wherein: Limit blocks (27) are slidably arranged on both the vertical shaft rods (21) and the side shaft rods (22), one end of the outer spring (26) abuts against the limit blocks (27), and a screw rod (28) is horizontally rotatably connected to the shaft collar (12), and the limit blocks (27) are threadedly connected to the screw rod (28).

4. The slope protection and anti-collapse device for engineering construction according to claim 1, wherein: The anchor bolt units (3) include: Anchoring seats (31), which are embedded in the bearing stratum of the slope of the slope protection, and an anchor column (4) is centered on the anchoring seats (31); Anchor pipe sleeves (32), which are coaxially slidably sleeved outside the anchor column (4), and the upper ends of the anchor pipe sleeves (32) are connected to the structure frames (11); Shock-absorbing springs (33), which are sleeved on the anchor column (4), and the lower ends of the shock-absorbing springs (33) abut against the inner cavity bottom surface of the anchor pipe (32); Grouting and solidifying units (5), which are integrated within the anchor column (32).

5. The slope protection and anti-collapse device for engineering construction according to claim 4, characterized in that: The grouting and solidifying units (5) include: Sealing cavities (51), which are centered within the anchor column (4), and dry concrete is filled in the sealing cavities (51); Water storage pipes (52), which are multiple and circumferentially distributed, each of the water storage pipes (52) is fixed on the anchor column (4), and a bladder (53) is sleeved at one end of the water storage pipe (52) extending into the sealing cavity (51); The shaft push plate (54) is slidably arranged in the sealing cavity (51) and is located below the water storage pipe (52). A plurality of cone needles corresponding to the water storage pipe (52) are distributed on the upper end surface of the shaft push plate (54). The slide rods (55) are vertically and symmetrically connected to the lower end surface of the shaft push plate (54). Each of the slide rods (55) is slidably connected in the anchor post (4), and one end thereof is in contact with the bottom surface of the inner cavity of the anchor pipe sleeve (32). A return spring is sleeved on the slide rod (55). The side holes (56) are circumferentially distributed on the side wall of the anchor post (4) and are communicated with the sealing cavity (51). The injection hole grooves (57) are circumferentially formed on the outer wall of the anchor pipe sleeve (32) and are located below the side holes (56).

6. The slope protection and anti-collapse device for engineering construction according to claim 5, characterized in that: Each of the injection hole grooves (57) is slidably butted with at least two side holes (56); and when the shaft push plate (54) is axially pushed by the slide rod to the highest position, the shaft push plate (54) directs and presses 70% of the concrete slurry in the sealing cavity (51) to be discharged through the side holes (56).

7. The slope protection and anti-collapse device for engineering construction according to claim 5, characterized in that: Breaking soil cone teeth (58) are fixedly arranged above each of the injection hole grooves (57) in the circumferential distribution of the anchor pipe sleeve (32). A ring groove (41) is formed on the circumferential side wall of the anchor post (4), and a plurality of clamping blocks (42) are distributed in the anchor pipe sleeve (32). The clamping blocks (42) are clamped and matched with the ring groove (41) during the sliding of the anchor pipe sleeve (32).

8. The slope protection and anti-collapse device for engineering construction according to claim 4, characterized in that: The anchor post (4) is rotatably connected to the anchor seat (31), and a spiral guide groove is axially formed on the side wall of the anchor post (4). A shaft nail (43) is fixed on the inner wall of the anchor pipe sleeve (32), and the shaft nail (43) is slidably embedded in the spiral guide groove, so that when the anchor pipe sleeve (32) slides axially along the anchor post (4), the anchor post (4) is synchronously driven to deflect in the positive and negative directions. A shaft cylinder (44) is coaxially fixed to the upper end of the anchor pipe sleeve (32). An inner rod (45) is rotatably connected in the shaft cylinder (44). The lower end of the inner rod (45) extends into the anchor post (4) and forms an axial sliding pair with the anchor post (4). An eccentric counterweight block (46) is sleeved on the inner rod (45), and the centroid of the eccentric counterweight block (46) is offset from the axis of the inner rod (45).

Images