Layered roadbed segmented tilt grouting construction device and method

Abstract

The application discloses a layered roadbed segmented inclined grouting construction device and method, which comprises a moving mechanism, the moving mechanism comprising a driving vehicle, a hydraulic cylinder and a grout tank being fixedly installed on the driving vehicle, and a connecting rod assembly being arranged at an output end of the hydraulic cylinder; a grouting mechanism, the grouting mechanism comprising a sleeve, the sleeve being fixedly connected with the connecting rod assembly, a grouting outer pipe being slidably connected in the sleeve, a grouting inner pipe being fixedly connected in the grouting outer pipe, the grouting inner pipe being communicated with the grout tank, a plurality of first one-way liquid outlet assemblies being arranged on the grouting outer pipe, a plurality of groups of second one-way liquid outlet assemblies being arranged on the grouting inner pipe, and a segmented guide assembly being slidably connected in the grouting outer pipe through a first transmission assembly, the segmented guide assembly being located between the grouting inner pipe and the grouting outer pipe. The application can respectively grout different depth layered roadbeds from the side of the roadbed, avoid damage to the road surface structure caused by drilling, reduce the number of grouting holes, and do not affect traffic.

Description

Technical Field

[0001] This invention belongs to the field of road construction technology, and in particular relates to a layered roadbed segmented inclined grouting construction device and method. Background Technology

[0002] Currently, traditional roadbed grouting techniques mostly involve first closing traffic, then drilling grouting holes vertically into the roadbed from the pavement, and finally inserting grouting pipes for grouting. Generally, the differences in permeability between different layers of roadbed filling materials are not considered. However, for roadbed fillers with different permeability, the grout can diffuse to different ranges. Grouting along the entire length within the depth of the grouting hole results in uneven diffusion of the grout in different layers, leading to uneven effective reinforcement areas and affecting the roadbed reinforcement effect. Furthermore, since grouting involves drilling holes in the pavement, it closes traffic and damages the pavement structure, affecting road traffic, damaging the pavement structure, and reducing pavement durability. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention proposes a layered roadbed segmented inclined grouting construction device and method, aiming to solve or improve at least one of the aforementioned technical problems.

[0004] To achieve the above objectives, the present invention provides a layered roadbed segmented inclined grouting construction device, comprising:

[0005] A mobile mechanism, comprising a drive vehicle, on which a hydraulic cylinder and a slurry tank are fixedly mounted, and a connecting rod assembly is provided at the output end of the hydraulic cylinder;

[0006] The grouting mechanism includes a sleeve fixedly connected to the connecting rod assembly. An outer grouting pipe is slidably connected inside the sleeve, and an inner grouting pipe is fixedly connected inside the outer grouting pipe. The inner grouting pipe communicates with the grout tank. The outer grouting pipe is equipped with several first one-way discharge components, and the inner grouting pipe is equipped with several sets of second one-way discharge components. The first one-way discharge components and the second one-way discharge components are arranged in a one-to-one correspondence. A segmented conductive component is slidably connected inside the outer grouting pipe via a first transmission assembly. The segmented conductive component is located between the inner grouting pipe and the outer grouting pipe, and is detachably connected to the corresponding first one-way discharge component and second one-way discharge component.

[0007] Preferably, the linkage assembly includes a first arm, one end of which is hinged to the output shaft of the hydraulic cylinder, and the other end of which is hinged to a second arm. A support plate is fixed to the end of the second arm away from the first arm, and the sleeve is fixed to the end of the support plate away from the second arm. A first hydraulic rod is hinged between the first arm and the hydraulic cylinder, and a second hydraulic rod is hinged between the second arm and the first arm.

[0008] Preferably, the first unidirectional liquid outlet component includes a plurality of first liquid outlet holes, which are circumferentially formed on the side wall of the grouting outer pipe. The top and bottom surfaces of the first liquid outlet holes are symmetrically provided with first grooves. A first spring telescopic rod is fixedly connected in the first groove. A first closing block is fixedly connected to the telescopic end of the first spring telescopic rod. Two first closing blocks extend into the first liquid outlet holes and are detachably connected. The end face of the first closing block near the inner side wall of the grouting outer pipe is a first inclined surface.

[0009] Preferably, the second unidirectional liquid outlet component includes a plurality of second liquid outlet holes, which are arranged in a one-to-one correspondence with a plurality of first liquid outlet holes. The plurality of second liquid outlet holes are circumferentially opened on the side wall of the grouting inner tube. The top and bottom surfaces of the second liquid outlet holes are symmetrically provided with second grooves. A second spring telescopic rod is fixedly connected in the second groove. A second closing block is fixedly connected to the telescopic end of the second spring telescopic rod. Two second closing blocks extend into the second liquid outlet holes and are detachably connected. The end face of the second closing block near the outer side wall of the grouting inner tube is a second inclined surface.

[0010] Preferably, the segmented conductive assembly includes a segmented sealing ring, which is slidably connected between the grouting outer pipe and the grouting inner pipe. The segmented sealing ring has a plurality of conductive holes circumferentially opened on its side wall. The conductive holes are correspondingly arranged with the first and second liquid outlet holes. The conductive holes are symmetrically arranged with retractable connecting blocks. The two connecting blocks are connected by a first telescopic tube. The two connecting blocks are detachably connected to and communicate with the first and second liquid outlet holes, respectively. The top and bottom surfaces of the opposite ends of the two connecting blocks are respectively provided with third inclined surfaces. The four third inclined surfaces are detachably connected to the two first inclined surfaces and the two second inclined surfaces, respectively.

[0011] Preferably, guide rings are fixedly sleeved on the sidewalls of the two connecting blocks that are close to each other. Guide ring grooves are symmetrically opened on the sidewalls of the through holes. The two guide rings are slidably connected in the two guide ring grooves, and several compression springs are fixedly connected between the two guide rings and the sidewalls of the two guide ring grooves that are close to each other.

[0012] Preferably, the first transmission assembly includes a first lead screw and a limiting rod. The first lead screw is rotatably connected in the outer grouting pipe, and the limiting rod is fixed in the inner grouting pipe. The segmented sealing ring is respectively provided with a limiting through hole and a threaded through hole. The limiting rod slides through the limiting through hole. The first lead screw is threaded and passes through the threaded through hole. The top end of the first lead screw is fixedly connected to the output shaft of a first servo motor. The first servo motor is fixedly installed on the top wall of the inner wall of the outer grouting pipe.

[0013] Preferably, the sleeve sidewall is provided with a guide groove, and a slider is slidably connected in the guide groove. One end of the slider is fixedly connected to the top sidewall of the grouting outer pipe, and the other end of the slider extends out of the guide groove and is fixedly connected to a lead screw nut. The lead screw nut is drivenly connected to a second lead screw. Connecting plates are fixedly connected to both ends of the sleeve outer wall. A second servo motor is fixedly installed on any of the connecting plates. One end of the second lead screw is fixedly connected to the output shaft of the second servo motor, and the other end is rotatably connected to another connecting plate.

[0014] Preferably, the top end of the grouting inner pipe extends out of the grouting outer pipe and is fixedly connected to and connected to a second telescopic pipe. The end of the second telescopic pipe away from the grouting inner pipe extends out of the sleeve and is fixedly connected to and connected to the output end of the supply pump. The supply pump is fixedly installed on the support plate, and the input end of the supply pump is connected to the slurry tank through a third telescopic pipe.

[0015] The method for segmented inclined grouting construction of layered roadbed includes the following steps:

[0016] Step 1: Obtain the depth and horizontal coordinates of the damage, and investigate the soil and rock properties at different depths of the roadbed;

[0017] Step 2: Determine the location, horizontal angle, and depth of the grouting holes;

[0018] Step 3: Drill grouting holes to the designed depth according to the design requirements;

[0019] Step four: After inspecting the borehole and confirming that the borehole depth and incident angle meet the design requirements, inject fast-setting sealing mud into the borehole, and then immediately insert the grouting pipe into the grouting hole. After the sealing mud solidifies, perform segmented grouting.

[0020] Compared with the prior art, the present invention has the following advantages and technical effects:

[0021] By moving the drive vehicle to a designated position and tilting the grouting mechanism via hydraulic cylinders and connecting rod assemblies, the outer grouting pipe is inserted into a pre-drilled grouting hole from the side of the roadbed. Grouting is then performed through the grout tank and the inner grouting pipe. During the grouting process, the segmented connecting assembly is connected to any corresponding first one-way liquid outlet assembly and several second one-way liquid outlet assemblies via the first transmission assembly, thus achieving segmented grouting. This allows for grouting of different depths of roadbed layers from the side of the roadbed according to the permeability of different roadbed soil layers, solving the problem of uniform grout diffusion in layered roadbeds, improving the quality of roadbed reinforcement, and avoiding damage to the road structure from drilling, thus not affecting traffic and reducing the number of grouting holes. Attached Figure Description

[0022] 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:

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a cross-sectional view of the grouting mechanism in this invention;

[0025] Figure 3 for Figure 2 A magnified view of part A in the image;

[0026] Figure 4 This is a top view of the segmented sealing ring in this invention;

[0027] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0028] In the diagram: 1. Drive vehicle; 2. Hydraulic cylinder; 3. Grout tank; 4. Grouting outer pipe; 5. Grouting inner pipe; 6. Sleeve; 7. First boom; 8. Second boom; 9. Support plate; 10. First hydraulic rod; 11. Second hydraulic rod; 12. First outlet hole; 13. First groove; 14. First spring telescopic rod; 15. First closing block; 16. First inclined surface; 17. Second outlet hole; 18. Second groove; 19. Second spring telescopic rod; 20. Second closing block; 21. Second inclined surface; 22. Segmented sealing ring; 23. Through hole 24. Connecting block; 25. First telescopic tube; 26. Third inclined plane; 27. Guide ring; 28. Guide ring groove; 29. ​​Compression spring; 30. First lead screw; 31. Limiting rod; 32. Limiting through hole; 33. Threaded through hole; 34. First servo motor; 35. Guide groove; 36. Slider; 37. Lead screw nut; 38. Second lead screw; 39. Connecting plate; 40. Second servo motor; 41. Second telescopic tube; 42. Supply pump; 43. Third telescopic tube; 44. Drill bit; 45. Mounting plate; 46. Third servo motor. Detailed Implementation

[0029] 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.

[0030] 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.

[0031] Reference Figure 1-4 As shown, this embodiment provides a layered roadbed segmented inclined grouting construction device, including:

[0032] The mobile mechanism includes a drive vehicle 1, on which a hydraulic cylinder 2 and a slurry tank 3 are fixedly mounted. The output end of the hydraulic cylinder 2 is provided with a connecting rod assembly.

[0033] The grouting mechanism includes a sleeve 6, which is fixedly connected to a connecting rod assembly. A grouting outer pipe 4 is slidably connected inside the sleeve 6, and a grouting inner pipe 5 is fixedly connected inside the grouting outer pipe 4. The grouting inner pipe 5 is connected to a grout tank 3. The grouting outer pipe 4 is provided with a plurality of first one-way liquid outlet components, and the grouting inner pipe 5 is provided with a plurality of second one-way liquid outlet components. The plurality of first one-way liquid outlet components and the plurality of second one-way liquid outlet components are arranged in a one-to-one correspondence. A segmented conductive component is slidably connected inside the grouting outer pipe 4 through a first transmission assembly. The segmented conductive component is located between the grouting inner pipe 5 and the grouting outer pipe 4, and the segmented conductive component is detachably connected to the corresponding first one-way liquid outlet component and second one-way liquid outlet component respectively.

[0034] By moving the drive vehicle 1 to the designated position and tilting the grouting mechanism driven by the hydraulic cylinder 2 and the connecting rod assembly, the grouting outer pipe 4 is inserted into the pre-drilled grouting hole from the side of the roadbed. Then, grouting is carried out through the grout tank 3 and the grouting inner pipe 5. During the grouting process, the segmented connecting component is driven by the first transmission component to communicate with any corresponding first one-way liquid outlet component and several second one-way liquid outlet components, so that segmented grouting can be realized. Thus, according to the permeability of different roadbed soil layers, grouting can be carried out separately for different depths of layered roadbeds from the side of the roadbed, solving the problem of uniform grout diffusion in layered roadbeds, improving the quality of roadbed reinforcement, and tilting grouting can avoid damage to the drilling of the pavement structure, not affect traffic, and reduce the number of grouting holes.

[0035] Further optimization of the scheme: the linkage assembly includes a first arm 7, one end of the first arm 7 is hinged to the output shaft of the hydraulic cylinder 2, the other end of the first arm 7 is hinged to a second arm 8, the end of the second arm 8 away from the first arm 7 is fixed to a support plate 9, the sleeve 6 is fixed to the end of the support plate 9 away from the second arm 8, a first hydraulic rod 10 is hinged between the first arm 7 and the hydraulic cylinder 2, and a second hydraulic rod 11 is hinged between the second arm 8 and the first arm 7.

[0036] The height of the first arm 7 and the second arm 8 can be adjusted by the hydraulic cylinder 2, and with the drive of the first hydraulic rod 10 and the second hydraulic rod 11, the height and tilt angle of the sleeve 6 can be adjusted to adapt to the position, horizontal tilt angle and depth of the grouting hole.

[0037] The scheme is further optimized. The first unidirectional liquid outlet component includes a plurality of first liquid outlet holes 12. The plurality of first liquid outlet holes 12 are circumferentially opened on the side wall of the grouting outer pipe 4. The top and bottom surfaces of the first liquid outlet holes 12 are symmetrically provided with first grooves 13. A first spring telescopic rod 14 is fixedly connected in the first groove 13. A first closing block 15 is fixedly connected to the telescopic end of the first spring telescopic rod 14. Two first closing blocks 15 extend into the first liquid outlet holes 12 respectively and are detachably connected. The end face of the first closing block 15 near the inner side wall of the grouting outer pipe 4 is a first inclined surface 16.

[0038] The scheme is further optimized. The second unidirectional liquid outlet component includes a number of second liquid outlet holes 17, which are arranged one-to-one with a number of first liquid outlet holes 12. The number of second liquid outlet holes 17 are circumferentially opened on the side wall of the grouting inner pipe 5. The top and bottom surfaces of the second liquid outlet holes 17 are symmetrically provided with second grooves 18. A second spring telescopic rod 19 is fixedly connected in the second groove 18. A second closing block 20 is fixedly connected to the telescopic end of the second spring telescopic rod 19. The two second closing blocks 20 extend into the second liquid outlet holes 17 and are detachably connected. The end face of the second closing block 20 near the outer side wall of the grouting inner pipe 5 is a second inclined surface 21.

[0039] The scheme is further optimized. The segmented conductive component includes a segmented sealing ring 22, which is slidably connected between the grouting outer pipe 4 and the grouting inner pipe 5. The side wall of the segmented sealing ring 22 is provided with a number of conductive holes 23. The conductive holes 23 are correspondingly set with the first liquid outlet 12 and the second liquid outlet 17. The conductive holes 23 are symmetrically provided with retractable connecting blocks 24. The two connecting blocks 24 are connected by a first telescopic pipe 25. The two connecting blocks 24 are detachably connected to and connected with the first liquid outlet 12 and the second liquid outlet 17, respectively. The top and bottom surfaces of the opposite ends of the two connecting blocks 24 are respectively provided with third inclined surfaces 26. The four third inclined surfaces 26 are detachably connected to the two first inclined surfaces 16 and the two second inclined surfaces 21, respectively.

[0040] In a further optimized design, guide rings 27 are fixedly sleeved on the sidewalls of the two connected blocks 24 that are close to each other. Guide ring grooves 28 are symmetrically opened on the sidewalls of the through hole 23. The two guide rings 27 are slidably connected in the two guide ring grooves 28, and several compression springs 29 are fixedly connected between the two guide ring grooves 28 and the two guide rings 27 respectively.

[0041] The segmented sealing ring 22 is driven to a suitable position by the first transmission component, thereby pushing the guide ring 27 through the compression spring 29. This causes the two connecting blocks 24 to press against the two first closing blocks 15 and the two second closing blocks 20 respectively. The third inclined surface 26 contacts the first inclined surface 16 and the second inclined surface 21 respectively, thereby causing the first closing blocks 15 and the second closing blocks 20 to retract into the first groove 13 and the second groove 18 respectively. This connects the first liquid outlet 12 and the second liquid outlet 17 through the two connecting blocks 24 and the first telescopic tube 25, allowing grouting to be performed. Conversely, if the segmented sealing ring 22 continues to slide, the connecting block 24 can be retracted into the guide hole 23 by the third inclined surface 26. The two first spring telescopic rods 14 connect the two first closing blocks 15 to seal the first liquid outlet 12, and the two second spring telescopic rods 19 connect the two second closing blocks 20 to seal the second liquid outlet 17.

[0042] Furthermore, the structural dimensions of the first closing block 15 and the second closing block 20 are adapted to the structural dimensions of the first liquid outlet 12 and the second liquid outlet 17, respectively, and the first closing block 15, the second closing block 20, the first liquid outlet 12 and the second liquid outlet 17 are preferably square structures.

[0043] Furthermore, the elastic force of several compression springs 29 is greater than that of the first spring telescopic rod 14 and the second spring telescopic rod 19, which facilitates the connecting block 24 to push open the two first closing blocks 15 or the two second closing blocks 20.

[0044] The scheme is further optimized. The first transmission component includes a first lead screw 30 and a limiting rod 31. The first lead screw 30 is rotatably connected in the grouting outer pipe 4, and the limiting rod 31 is fixed in the grouting inner pipe 5. Limiting through holes 32 and threaded through holes 33 are respectively opened on the segmented sealing ring 22. The limiting rod 31 slides through the limiting through hole 32. The first lead screw 30 is threaded and passes through the threaded through hole 33. The output shaft of the first servo motor 34 is fixedly connected to the top of the first lead screw 30. The first servo motor 34 is fixedly installed on the inner top wall of the grouting outer pipe 4.

[0045] The first servo motor 34 drives the first lead screw 30 to rotate, thereby driving the segmented sealing ring 22 to move through the thread effect between the first lead screw 30 and the threaded through hole 33. The segmented sealing ring 22 preferably moves from bottom to top, realizing segmented grouting from the bottom layer to the top layer.

[0046] The design is further optimized by providing a guide groove 35 on the side wall of the sleeve 6. A slider 36 is slidably connected within the guide groove 35. One end of the slider 36 is fixedly connected to the top side wall of the grouting outer pipe 4. The other end of the slider 36 extends out of the guide groove 35 and is fixedly connected to a screw nut 37. The screw nut 37 is connected to a second screw 38. Connecting plates 39 are fixedly connected to both ends of the outer wall of the sleeve 6. A second servo motor 40 is fixedly installed on any connecting plate 39. One end of the second screw 38 is fixedly connected to the output shaft of the second servo motor 40, and the other end is rotatably connected to another connecting plate 39.

[0047] The second servo motor 40 drives the second lead screw 38 to rotate, and the slider 36 and guide groove 35 guide and limit the lead screw nut 37, so that the slider 36 can drive the grouting outer pipe 4 to extend out of the sleeve 6 and into the grouting hole.

[0048] The scheme is further optimized. The top of the grouting inner pipe 5 extends out of the grouting outer pipe 4 and is fixedly connected to and connected to the second telescopic pipe 41. The end of the second telescopic pipe 41 away from the grouting inner pipe 5 extends out of the sleeve 6 and is fixedly connected to and connected to the output end of the supply pump 42. The supply pump 42 is fixedly installed on the support plate 9. The input end of the supply pump 42 is connected to the slurry tank 3 through the third telescopic pipe 43.

[0049] The grout in the grout tank 3 is pumped into the grouting inner pipe 5 by the supply pump 42 through the third telescopic pipe 43 and the second telescopic pipe 41.

[0050] The method for segmented inclined grouting construction of layered roadbed includes the following steps:

[0051] Step 1: Determine the location of roadbed defects using non-destructive testing technology, obtain the depth and horizontal coordinates of the defects, and investigate the soil and rock properties at different depths of the roadbed using the geometric dimensions of the roadbed cross-section.

[0052] Step 2: Determine the location, horizontal angle, and depth of the grouting holes;

[0053] Step 3: Drill grouting holes to the designed depth according to the design requirements. Use a geological drilling rig to drill cores to create grouting holes and take samples. Investigate the soil and rock characteristics at different depths of the subgrade. Design subgrade grouting parameters based on the soil and rock parameters of the subgrade at different depths. Use different grouting parameters for different layers of subgrade to ensure uniform diffusion of grout in each layer of subgrade.

[0054] Step four: After inspecting the borehole and confirming that the borehole depth and incident angle meet the design requirements, inject fast-setting sealing slurry into the borehole. Immediately afterward, insert the grouting outer pipe into the grouting hole. After the sealing slurry solidifies, perform segmented grouting. Initially, place the segmented sealing ring 22 at the bottom. When the grouting outer pipe 4 is inserted into the grouting hole, the grouting inner pipe 5 and the grouting outer pipe 4 move synchronously. That is, the first outlet hole 12 and the second outlet hole 17 always maintain a corresponding state. The first outlet hole 12 and the second outlet hole 17 are sealed by two opposing first closing blocks 15 and two second closing blocks 20, respectively. During grouting, the grouting inner pipe 5 is filled with slurry. By moving the segmented sealing ring 22 upward in sequence, the two connecting blocks 24 are connected to the first outlet hole 12 and the second outlet hole 17 in stages. That is, the slurry flows out at the connecting position, thereby realizing segmented grouting.

[0055] Example 2, refer to Figure 5 The difference between this embodiment and embodiment 1 is that the bottom end of the grouting outer pipe 4 is open and a drill bit 44 is rotatably connected to it through a sealed bearing. The drill bit 44 extends out of the grouting outer pipe 4. An installation plate 45 is fixed to the inner wall of the grouting outer pipe 4. The installation plate 45 is located below the first liquid outlet hole 12 at the lowest end and above the drill bit 44. The bottom end of the grouting inner pipe 5 and the bottom end of the limiting rod 31 are respectively fixed to the top surface of the installation plate 45. The bottom end of the first lead screw 30 is rotatably connected to the top surface of the installation plate 45. A third servo motor 46 is fixed to the bottom surface of the installation plate 45. The output shaft of the third servo motor 46 is fixed to the top shaft of the drill bit 44.

[0056] The drill bit 44 is rotated by the third servo motor 46, and with the downward movement of the sleeve 6, self-drilling grouting can be achieved.

[0057] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 this invention, and are not intended to 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 this invention.

[0058] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A layered roadbed segmented inclined grouting construction device, characterized in that, include: The moving mechanism includes a drive vehicle (1), on which a hydraulic cylinder (2) and a slurry tank (3) are fixedly installed. The output end of the hydraulic cylinder (2) is provided with a connecting rod assembly. The grouting mechanism includes a sleeve (6) which is fixedly connected to the connecting rod assembly. A grouting outer pipe (4) is slidably connected inside the sleeve (6). A grouting inner pipe (5) is fixedly connected inside the grouting outer pipe (4). The grouting inner pipe (5) is connected to the grout tank (3). The grouting outer pipe (4) is provided with a plurality of first one-way liquid outlet components. The grouting inner pipe (5) is provided with a plurality of second one-way liquid outlet components. The plurality of first one-way liquid outlet components and the plurality of second one-way liquid outlet components are arranged in a one-to-one correspondence. A segmented conductive component is slidably connected inside the grouting outer pipe (4) through a first transmission assembly. The segmented conductive component is located between the grouting inner pipe (5) and the grouting outer pipe (4). The segmented conductive component is detachably connected to the corresponding first one-way liquid outlet component and the second one-way liquid outlet component.

2. The layered roadbed segmented inclined grouting construction device according to claim 1, characterized in that: The linkage assembly includes a first arm (7), one end of which is hinged to the output shaft of the hydraulic cylinder (2), and the other end of which is hinged to a second arm (8). A support plate (9) is fixed to the end of the second arm (8) away from the first arm (7). The sleeve (6) is fixed to the end of the support plate (9) away from the second arm (8). A first hydraulic rod (10) is hinged between the first arm (7) and the hydraulic cylinder (2), and a second hydraulic rod (11) is hinged between the second arm (8) and the first arm (7).

3. The layered roadbed segmented inclined grouting construction device according to claim 1, characterized in that: The first unidirectional liquid outlet assembly includes a plurality of first liquid outlet holes (12), which are circumferentially opened on the side wall of the grouting outer pipe (4). The top and bottom surfaces of the first liquid outlet holes (12) are symmetrically provided with first grooves (13). A first spring telescopic rod (14) is fixedly connected in the first groove (13). A first closing block (15) is fixedly connected to the telescopic end of the first spring telescopic rod (14). Two first closing blocks (15) extend into the first liquid outlet holes (12) respectively and are detachably connected. The end face of the first closing block (15) near the inner side wall of the grouting outer pipe (4) is a first inclined surface (16).

4. The layered roadbed segmented inclined grouting construction device according to claim 3, characterized in that: The second unidirectional liquid outlet assembly includes a plurality of second liquid outlet holes (17), which are arranged one-to-one with a plurality of first liquid outlet holes (12). The plurality of second liquid outlet holes (17) are circumferentially opened on the side wall of the grouting inner tube (5). The top and bottom surfaces of the second liquid outlet holes (17) are symmetrically provided with second grooves (18). A second spring telescopic rod (19) is fixedly connected in the second groove (18). A second closing block (20) is fixedly connected to the telescopic end of the second spring telescopic rod (19). Two second closing blocks (20) extend into the second liquid outlet holes (17) respectively and are detachably connected. The end face of the second closing block (20) near the outer side wall of the grouting inner tube (5) is a second inclined surface (21).

5. The layered roadbed segmented inclined grouting construction device according to claim 4, characterized in that: The segmented conductive assembly includes a segmented sealing ring (22), which is slidably connected between the grouting outer pipe (4) and the grouting inner pipe (5). The segmented sealing ring (22) has several through holes (23) circumferentially opened on its side wall. The through holes (23) are correspondingly arranged with the first liquid outlet (12) and the second liquid outlet (17). The through holes (23) are symmetrically arranged with retractable connecting blocks (24). The two connecting blocks (24) are connected by a first telescopic pipe (25). The two connecting blocks (24) are detachably connected and connected to the first liquid outlet (12) and the second liquid outlet (17) respectively. The top and bottom surfaces of the opposite ends of the two connecting blocks (24) are respectively provided with third inclined surfaces (26). The four third inclined surfaces (26) are detachably connected to the two first inclined surfaces (16) and the two second inclined surfaces (21) respectively.

6. The layered roadbed segmented inclined grouting construction device according to claim 5, characterized in that: Guide rings (27) are fixedly sleeved on the sidewalls of the two connecting blocks (24) that are close to each other. Guide ring grooves (28) are symmetrically opened on the sidewalls of the through hole (23). The two guide rings (27) are slidably connected in the two guide ring grooves (28) respectively. Several compression springs (29) are fixedly connected between the two guide ring grooves (28) that are close to each other and the two guide rings (27).

7. The layered roadbed segmented inclined grouting construction device according to claim 5, characterized in that: The first transmission assembly includes a first lead screw (30) and a limiting rod (31). The first lead screw (30) is rotatably connected in the grouting outer pipe (4), and the limiting rod (31) is fixed in the grouting inner pipe (5). The segmented sealing ring (22) is respectively provided with a limiting through hole (32) and a threaded through hole (33). The limiting rod (31) slides through the limiting through hole (32). The first lead screw (30) is threaded and passes through the threaded through hole (33). The top end of the first lead screw (30) is fixedly connected to the output shaft of the first servo motor (34). The first servo motor (34) is fixedly installed on the inner top wall of the grouting outer pipe (4).

8. The layered roadbed segmented inclined grouting construction device according to claim 1, characterized in that: The sleeve (6) has a guide groove (35) on its side wall. A slider (36) is slidably connected in the guide groove (35). One end of the slider (36) is fixed to the top side wall of the grouting outer pipe (4). The other end of the slider (36) extends out of the guide groove (35) and is fixedly connected to a screw nut (37). The screw nut (37) is connected to a second screw (38). Connecting plates (39) are fixedly connected to both ends of the outer wall of the sleeve (6). A second servo motor (40) is fixedly installed on any of the connecting plates (39). One end of the second screw (38) is fixedly connected to the output shaft of the second servo motor (40), and the other end is rotatably connected to another connecting plate (39).

9. The layered roadbed segmented inclined grouting construction device according to claim 2, characterized in that: The top end of the grouting inner pipe (5) extends out of the grouting outer pipe (4) and is fixedly connected to and connected to a second telescopic pipe (41). The end of the second telescopic pipe (41) away from the grouting inner pipe (5) extends out of the sleeve (6) and is fixedly connected to and connected to the output end of the supply pump (42). The supply pump (42) is fixedly installed on the support plate (9). The input end of the supply pump (42) is connected to the slurry tank (3) through a third telescopic pipe (43).

10. A method for segmented inclined grouting construction of layered roadbed, based on the segmented inclined grouting construction device for layered roadbed as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Obtain the depth and horizontal coordinates of the damage, and investigate the soil and rock properties at different depths of the roadbed; Step 2: Determine the location, horizontal angle, and depth of the grouting holes; Step 3: Drill grouting holes to the designed depth according to the design requirements; Step 4: After inspecting the hole, if the hole depth and incident angle meet the design requirements, inject fast-setting sealing mud into the hole, and then immediately insert the grouting outer pipe (4) into the grouting hole. After the sealing mud solidifies, perform segmented grouting.

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