Self-adaptive grouting reinforcement structure of water and electricity construction project diaphragm wall and construction method

Abstract

The invention discloses a self-adaptive grouting reinforcement structure of a water and electricity construction project diaphragm wall and a construction method, and belongs to the technical field of diaphragm walls. And a grouting cylinder. According to the self-adaptive grouting reinforcement structure of the water and electricity construction project diaphragm wall and the construction method, by using the supporting mechanism, the grouting operation environment and the grout consolidation condition are fundamentally improved, a triangular supporting system composed of a supporting ring, an adjustable inclined strut and an auxiliary strut firmly locks a grouting barrel to a designed position, and the grouting barrel is firmly fixed to the designed position; the problems of deflection and shaking of a grouting pipe caused by equipment vibration or weak hole wall in traditional construction are effectively solved, accurate control over the grouting range is ensured, through use of the tamping mechanism, before grouting, a tamping plate is driven by a motor to expand in the radial direction, active and uniform mechanical tamping is conducted on the hole wall, a rock-soil body of the hole wall is strengthened, and the construction efficiency is improved. And the risk of broken soil falling or hole wall collapse caused by stress release in the grouting process is reduced.

Description

Technical Field

[0001] This invention belongs to the field of anti-seepage wall technology, specifically an adaptive grouting reinforcement structure and construction method for anti-seepage walls in hydropower construction projects. Background Technology

[0002] In hydropower engineering construction, anti-seepage walls are a key engineering measure to ensure the stability of the foundation and slope of hydraulic structures such as dams, cofferdams, and underground powerhouses. Grouting reinforcement technology, as a core process for repairing defects in existing anti-seepage walls and enhancing their anti-seepage performance and structural integrity, is widely used to treat problems such as wall leakage, cracks, loose joints, and loose foundation soil.

[0003] Currently, traditional grouting reinforcement operations for seepage-proof walls typically follow a step-by-step process: drilling, pipe placement, grouting, testing, and replenishment. Specifically, this involves first drilling a hole to the designed depth at a predetermined location, then lowering a grouting pipe or perforated pipe, and finally injecting grout into the target stratum using a grouting pump. However, this conventional process faces a series of challenges in practical applications, both in terms of mechanical structure and process integration. 1. The borehole wall used for grouting, especially in loose, fractured or water-bearing strata, is prone to local collapse or spalling. This not only blocks the grouting channel and affects the diffusion of grout, but may also cause the grouting pipe to be buried or deviated, making it difficult to accurately deliver to the preset reinforcement depth. Existing solutions mostly use casing to protect the wall or use mud to stabilize the borehole wall, but the former increases the complexity and cost of the process, and the latter may interfere with the grout setting. Neither of these solutions effectively solves the problem of centering and anti-swaying of the grouting pipe in deep and long holes. 2. Traditional grouting mainly relies on grout pressure to penetrate or fracture the formation. However, there is a lack of effective pretreatment methods for "mud skin" or loose attachments on the borehole wall surface caused by drilling disturbance. These weak layers will form isolation zones, which will seriously affect the bonding strength between the grout and the original formation, reduce the integrity and impermeability of the reinforced body. In addition, the grouting process is separate from the compaction and crack cleaning of the borehole wall, which is inefficient and makes it difficult to ensure the consistency of the treatment effect.

[0004] 3. The support structure of existing grouting equipment is often relatively simple or relies on external scaffolding. It lacks an integrated and adaptive stabilization mechanism with the grouting hole and the pipe inside the hole. When dealing with holes of different diameters, depths or with slight deviations, it has poor versatility, and the installation and adjustment are time-consuming. It cannot provide a stable working platform for the core components of grouting. Summary of the Invention

[0005] The purpose of this invention is to fundamentally improve the grouting operation environment and grout consolidation conditions through the use of a support mechanism. The triangular support system, composed of a support ring, adjustable diagonal brace, and auxiliary brace, firmly locks the grouting cylinder in the designed position, effectively overcoming the problems of grouting pipe deflection and shaking caused by equipment vibration or weak borehole walls in traditional construction, ensuring precise control of the grouting range. Through the use of a compaction mechanism, before grouting, the motor drives the compaction plate to expand radially, actively and uniformly compacting the borehole wall mechanically, strengthening the borehole wall soil and rock, reducing the risk of soil fragmentation or borehole wall collapse caused by stress release during grouting, and creating more stable and dense boundary conditions for grout diffusion. This is conducive to the formation of a continuous, complete, and high-strength anti-seepage wall, significantly improving the long-term durability and anti-seepage reliability of the reinforcement project.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention provides an adaptive grouting reinforcement structure and construction method for seepage prevention walls in hydropower construction projects.

[0007] In a first aspect, the present invention provides a technical solution: an adaptive grouting reinforcement structure for seepage prevention walls in hydropower construction projects, comprising: Foundation with grouting holes at the top; Grouting cylinder; the grouting cylinder is installed inside the grouting hole; A support mechanism is provided on the foundation and is connected to the grouting cylinder. The support mechanism includes a docking ring, a support ring, a positioning ring, and support components. The docking ring is fixedly connected to the grouting cylinder. The support ring is movably sleeved on the grouting cylinder and is located at the bottom of the docking ring. Multiple sets of support components are provided, and the multiple sets of support components are equidistantly installed on the support ring and are connected to the foundation. The positioning ring is installed on the top of the foundation and is movably sleeved on the grouting cylinder. The multiple sets of support components are connected to the positioning ring. The grouting mechanism is located inside the grouting cylinder; A compaction mechanism is provided on the grouting mechanism. The compaction mechanism includes a reset component, a compaction plate, and an extrusion component. Multiple sets of reset components are provided, and all sets of reset components are provided on the grouting mechanism. Multiple compaction plates are provided, and each compaction plate is provided on each set of reset components. The extrusion component is provided on the grouting mechanism, and its extrusion component is connected to multiple compaction plates.

[0008] The supporting component includes: The main support assembly is provided in multiple sets, and all sets of the main support assembly are disposed on the support ring; The docking components are provided in multiple sets, and each set of docking components is located on the main support component; The auxiliary support assembly is provided in multiple sets, and each set of auxiliary support assemblies is located on the positioning ring, and each set of auxiliary support assemblies is connected to each set of main support assemblies.

[0009] Each main support assembly includes a support sleeve rod and a support telescopic rod. The support sleeve rod is rotatably connected to the support ring, and the support telescopic rod is movably connected inside the support sleeve rod.

[0010] Each of the docking components includes a docking threaded groove and a docking threaded post. There are two docking threaded grooves, both of which are opened at both ends inside the support sleeve rod. The docking threaded post is fixedly connected to one end of the support telescopic rod.

[0011] Each set of auxiliary support components includes a docking seat and an auxiliary support telescopic rod. The docking seat is fixedly connected to the positioning ring, one end of the auxiliary support telescopic rod is rotatably connected to the support sleeve rod, and the other end of the auxiliary support telescopic rod is installed in the docking seat.

[0012] The grouting mechanism includes a grouting pipe and a grouting head. The grouting pipe is installed inside the grouting cylinder, and the grouting head is fixedly connected to the grouting pipe. The grouting head has a shrinkage groove, and multiple compaction plates are disposed in the shrinkage groove.

[0013] Each set of reset components includes a reset spring, a guide rod, and a guide sleeve. Multiple reset springs are provided, and all multiple reset springs are fixedly connected at equal intervals within the shrinkage groove and fixedly connected to the compaction plate. Multiple guide rods are provided, and all multiple guide rods are fixedly connected at equal intervals within the compaction plate. Multiple guide sleeves are provided, and all multiple guide sleeves are fixedly connected at equal intervals within the shrinkage groove. Each guide rod is movably connected within each guide sleeve.

[0014] The extrusion component includes a bidirectional screw, a drive motor, a top frustum sleeve, and a synchronization assembly. Multiple bidirectional screws are provided, and multiple guide sleeves are rotatably connected within a shrinkage groove. The drive motor is fixedly connected within the grouting head, and its output end is fixedly connected to one end of one of the bidirectional screws. Two top frustum sleeves are provided, each movably fitted within the shrinkage groove, and both top frustum sleeves are threadedly connected to the multiple bidirectional screws. The synchronization assembly is located on the multiple bidirectional screws.

[0015] The synchronization component includes a synchronization gear and a synchronization ring. There are multiple synchronization gears, each of which is fixedly connected to one end of each bidirectional screw. The synchronization ring is rotatably connected inside the grouting head, and the synchronization ring meshes with the multiple synchronization gears.

[0016] Secondly, according to the first aspect mentioned above, the present invention also provides a technical solution: a construction method for adaptive grouting reinforcement of anti-seepage walls in hydropower construction projects, comprising the following steps: Step 1: Drilling: Drill grouting holes of the specified depth and diameter on the foundation that needs to be reinforced, according to the design drawings. Place and fix the positioning ring precisely on the foundation surface above the grouting hole, ensuring that its center is aligned with the center of the grouting hole.

[0017] Step 2: Install the grouting cylinder: Vertically insert the grouting cylinder into the grouting hole through the center of the positioning ring. When the grouting cylinder reaches the vicinity of the design depth, stop lowering it. At this time, the docking ring fixedly connected to the grouting cylinder aligns with the movable support ring. Manually or by driving the multiple sets of support components on the support ring, rotate and adjust the support telescopic rod in each set of support components so that it extends out of the support sleeve. The docking threaded post at the end of the support telescopic rod is screwed into the docking threaded groove at the bottom of the support sleeve and locked. The extended end of the support telescopic rod will be firmly inserted into the foundation. Adjust the length of each set of auxiliary support telescopic rods so that one end is connected to the appropriate position of the support sleeve, and the other end is installed in the docking seat fixed on the positioning ring, thus completing the support.

[0018] Step 3: Insert the grouting and compaction mechanism: Insert the assembled grouting and compaction mechanism into the fixed grouting cylinder from above, and lower it to the designed grouting depth.

[0019] Step 4: Grouting and Synchronous Compaction: Before grouting, start the drive motor. The drive motor drives one of the bidirectional screws to rotate. Through the meshing transmission of the synchronous gear and synchronous gear ring, all bidirectional screws rotate synchronously in the same direction. The rotating bidirectional screws drive the two top-position frustum sleeves to approach each other axially. When they move towards each other, their conical surfaces will squeeze the inclined surfaces on the inner side of multiple compaction plates. Under the compression of the top-position frustum sleeves, multiple compaction plates overcome the tension of the return spring and expand radially outward from the shrinkage groove along the guiding direction of the guide rod and guide sleeve. The outwardly expanding compaction plates compact the inner wall of the grouting hole 2. After completion, the drive motor reverses, and the compaction plates shrink through the return spring 15. Grout is pumped to the grouting head through the grouting pipe. The grout flows out from the outlet of the grouting head and begins to fill the surrounding foundation voids or cracks.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: (1) In this invention, the use of the support mechanism fundamentally improves the grouting operation environment and grout consolidation conditions. The triangular support system, consisting of a support ring, adjustable diagonal brace and auxiliary brace, firmly locks the grouting cylinder in the design position, effectively overcoming the problems of grouting pipe deviation and shaking caused by equipment vibration or weak hole wall in traditional construction, and ensuring precise control of the grouting range.

[0021] (2) In this invention, by using the tamping mechanism, before grouting, the tamping plate is radially expanded by the motor drive to actively and uniformly tampe the hole wall, which strengthens the rock and soil of the hole wall, reduces the risk of soil falling off or hole wall collapse caused by stress release during grouting, and creates more stable and dense boundary conditions for grout diffusion, which is conducive to forming a continuous, complete and high-strength anti-seepage wall, and greatly improves the long-term durability and anti-seepage reliability of the reinforcement project. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is an exploded cross-sectional view of the present invention; Figure 2 This is a cross-sectional view of the sample portion of the present invention; Figure 3 This is a perspective view of the present invention; Figure 4 This is an exploded cross-sectional view of the ramming mechanism of the present invention; Figure 5 This is a cross-sectional view of the tamping mechanism of the present invention; Figure 6 This is a perspective view of the extrusion component of the present invention; Figure 7 This is an exploded cross-sectional view of the support mechanism of the present invention; Figure 8 This is a cross-sectional view of the support mechanism of the present invention.

[0024] The markings in the diagram are: 1. Foundation; 2. Grouting hole; 3. Grouting cylinder; 4. Connecting ring; 5. Support ring; 6. Support sleeve; 7. Support telescopic rod; 8. Connecting threaded groove; 9. Connecting threaded column; 10. Positioning ring; 11. Secondary support telescopic rod; 12. Grouting head; 13. Shrinkage groove; 14. Compactor plate; 15. Return spring; 16. Guide rod; 17. Guide sleeve; 18. Top position frustum sleeve; 19. Bidirectional screw; 20. Synchronous gear; 21. Synchronous gear ring; 22. Drive motor; 23. Grouting pipe; 24. Connecting seat. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0026] Please see Figure 1-8 As shown, the present invention provides an adaptive grouting reinforcement structure and construction method for seepage prevention walls in hydropower construction projects.

[0027] Firstly, please refer to Figure 1-8 As shown, the present invention provides an embodiment: an adaptive grouting reinforcement structure for seepage prevention walls in hydropower construction projects, comprising: Foundation 1 with grouting holes 2 at the top; Grouting cylinder 3; Grouting cylinder 3 is installed inside grouting hole 2; The support mechanism is located on the foundation 1 and is connected to the grouting cylinder 3. The support mechanism includes a docking ring 4, a support ring 5, a positioning ring 10, and support components. The docking ring 4 is fixedly connected to the grouting cylinder 3. The support ring 5 is movably sleeved on the grouting cylinder 3 and is located at the bottom of the docking ring 4. Multiple sets of support components are provided, and multiple sets of support components are equidistantly installed on the support ring 5 and are connected to the foundation 1. The positioning ring 10 is installed on the top of the foundation 1 and is movably sleeved on the grouting cylinder 3. Multiple sets of support components are connected to the positioning ring 10. The grouting mechanism is located inside the grouting cylinder 3; The compaction mechanism is located on the grouting mechanism. The compaction mechanism includes a reset component, a compaction plate 14 and an extrusion component. There are multiple sets of reset components, and all sets of reset components are located on the grouting mechanism. There are multiple compaction plates 14, and each compaction plate 14 is located on each set of reset components. The extrusion component is located on the grouting mechanism and is connected to multiple compaction plates 14.

[0028] In this implementation plan: the grouting cylinder 3 supports the grouting hole 2 near the ground to prevent collapse. The connecting ring 4, support ring 5, and positioning ring 10 are connected one by one. The grouting cylinder 3 is supported by the supporting components to prevent the grouting cylinder 3 from shaking during use and affecting the overall performance. The compaction plate 14 is controlled by the squeezing component and expands outward to compact the inside of the grouting hole 2, preventing soil fragments from falling off and improving stability during use.

[0029] Specifically, the supporting components include: The main support components are provided in multiple sets, and all sets of main support components are located on the support ring 5; The docking components are provided in multiple sets, with each set of docking components located on the main support component; The auxiliary support assembly has multiple sets, all of which are located on the positioning ring 10, and each set of auxiliary support assembly is connected to each set of main support assembly.

[0030] In this embodiment, the main support assembly, the docking assembly, and the auxiliary support assembly are used together to provide stable support for the grouting cylinder 3.

[0031] Specifically: Each main support assembly includes a support sleeve 6 and a support telescopic rod 7. The support sleeve 6 is rotatably connected to the support ring 5, and the support telescopic rod 7 is movably connected inside the support sleeve 6.

[0032] In this embodiment, the length of the support telescopic rod 7 is adjusted inside the support sleeve rod 6 to achieve the use of diagonal bracing.

[0033] Specifically: Each set of docking components includes a docking threaded groove 8 and a docking threaded post 9. There are two docking threaded grooves 8, both of which are opened at both ends inside the support sleeve rod 6. The docking threaded post 9 is fixedly connected to one end of the support telescopic rod 7.

[0034] In this embodiment: the threaded groove 8 and the threaded post 9 are connected to each other to achieve the stability of the support telescopic rod 7 inside the support sleeve rod 6 when it is in both the storage and support states.

[0035] Specifically: Each set of auxiliary support components includes a docking seat 24 and an auxiliary support telescopic rod 11. The docking seat 24 is fixedly connected to the positioning ring 10. One end of the auxiliary support telescopic rod 11 is rotatably connected to the support sleeve rod 6, and the other end of the auxiliary support telescopic rod 11 is installed in the docking seat 24.

[0036] In this embodiment, the auxiliary support telescopic rod 11 forms a triangle with the support sleeve rod 6 and the grouting cylinder 3 to ensure overall stability, and the docking seat 24 facilitates the installation and use of the auxiliary support telescopic rod 11.

[0037] Specifically: The grouting mechanism includes a grouting pipe 23 and a grouting head 12. The grouting pipe 23 is installed inside the grouting cylinder 3, and the grouting head 12 is fixedly connected to the grouting pipe 23. A shrinkage groove 13 is provided on the grouting head 12, and multiple compaction plates 14 are provided in the shrinkage groove 13.

[0038] In this embodiment, the grouting pipe 23 and the grouting head 12 are applications of existing technology and are connected to an external grouting device, which will not be described in detail here.

[0039] Specifically: Each set of reset components includes a reset spring 15, a guide rod 16, and a guide sleeve 17. There are multiple reset springs 15, which are equidistantly fixedly connected to the shrinkage groove 13 and fixedly connected to the compaction plate 14. There are multiple guide rods 16, which are equidistantly fixedly connected to the compaction plate 14. There are multiple guide sleeves 17, which are equidistantly fixedly connected to the shrinkage groove 13. Each guide rod 16 is movably connected to each guide sleeve 17.

[0040] In this embodiment, the reset spring 15 is extended and retracted by the guide rod 16 and the guide sleeve 17 to control the position of the compaction plate 14 relative to the shrinkage groove 13.

[0041] Specifically: The extrusion component includes a bidirectional screw 19, a drive motor 22, a top frustum sleeve 18, and a synchronization assembly. There are multiple bidirectional screws 19, and multiple guide sleeves 17 are rotatably connected to the shrinkage groove 13. The drive motor 22 is fixedly connected to the grouting head 12, and the output end of the drive motor 22 is fixedly connected to one end of one of the bidirectional screws 19. There are two top frustum sleeves 18, and both top frustum sleeves 18 are movably fitted into the shrinkage groove 13. Both top frustum sleeves 18 are threadedly connected to the multiple bidirectional screws 19. The synchronization assembly is provided on the multiple bidirectional screws 19.

[0042] In this embodiment, the model of the drive motor 22 can be selected from those available on the market as needed, which will not be elaborated here. The drive motor 22 controls the rotation of one of the bidirectional screws 19, so that the two top frustum sleeves 18 move closer or further away synchronously, thereby controlling the distance between the compaction plate 14 and the shrinkage groove 13, and thus completing the use.

[0043] Specifically: The synchronization component includes a synchronization gear 20 and a synchronization ring 21. There are multiple synchronization gears 20, and each synchronization gear 20 is fixedly connected to one end of each bidirectional screw 19. The synchronization ring 21 is rotatably connected to the grouting head 12, and the synchronization ring 21 meshes with the multiple synchronization gears 20.

[0044] In this embodiment, the synchronous gears 20 are of the same size and rotate synchronously through the synchronous gear ring 21, thereby controlling the synchronous rotation of multiple bidirectional screws 19.

[0045] Secondly, according to the implementation scheme of the first aspect above, the present invention also provides an implementation scheme: a construction method for adaptive grouting reinforcement of anti-seepage walls in hydropower construction projects, comprising the following steps: Step 1, drilling: On the foundation 1 to be reinforced, drill grouting holes 2 of specified depth and diameter according to the design drawings, and accurately place and fix the positioning ring 10 on the surface of the foundation 1 above the grouting hole 2, ensuring that its center is aligned with the center of the grouting hole 2; Step 2, installing the grouting cylinder 3: Vertically insert the grouting cylinder 3 into the grouting hole 2 through the center of the positioning ring 10, and when the grouting cylinder 3 is lowered to the designed depth... When the depth is near the target, stop lowering. At this time, the docking ring 4, which is fixedly connected to the grouting cylinder 3, docks with the movable support ring 5. Manually or by driving, rotate and adjust the support telescopic rod 7 in each support component to extend it out of the support sleeve 6. The docking threaded post 9 at the end of the support telescopic rod 7 is screwed into the docking threaded groove 8 at the bottom of the support sleeve 6 and locked. The extended end of the support telescopic rod 7 will be firmly inserted into the foundation 1. Adjust the length of each set of auxiliary support telescopic rods 11 so that one end is connected to the appropriate position of the support sleeve 6 and the other end is installed on the fixed positioning. The support is completed within the docking seat 24 on ring 10; Step 3: Insert the grouting and compaction mechanism: Insert the assembled grouting and compaction mechanism as a whole into the fixed grouting cylinder 3 from above, and lower it to the designed grouting depth; Step 4: Perform grouting and synchronous compaction operations: Before grouting, start the drive motor 22. The drive motor 22 drives one of the bidirectional screws 19 to rotate. Through the meshing transmission of the synchronous gear 20 and the synchronous gear ring 21, all bidirectional screws 19 rotate synchronously in the same direction. The rotating bidirectional screws 19 drive the two top frustum sleeves 18 to move closer to each other axially. As they move toward each other, their conical surfaces press against the inclined surfaces inside the multiple compaction plates 14. Under the pressure of the top frustum sleeve 18, the multiple compaction plates 14 overcome the tension of the return spring 15 and expand radially outward from the shrinkage groove 13 along the guiding direction of the guide rod 16 and the guide sleeve 17. The outwardly expanding compaction plates 14 compact the inner wall of the grouting hole 2. After completion, the drive motor 22 reverses direction, and the compaction plates 14 shrink through the return spring 15. Grout is pumped to the grouting head 12 through the grouting pipe 23. The grout flows out from the outlet of the grouting head 12 and begins to fill the voids or cracks in the surrounding foundation 1.

[0046] The control method of this invention is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this invention is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An adaptive grouting reinforcement structure for seepage prevention walls in hydropower construction projects, characterized in that, include: Foundation (1) with grouting holes (2) at the top; Grouting cylinder (3); the grouting cylinder (3) is installed inside the grouting hole (2); The support mechanism is located on the foundation (1) and is connected to the grouting cylinder (3). The support mechanism includes a docking ring (4), a support ring (5), a positioning ring (10), and support components. The docking ring (4) is fixedly connected to the grouting cylinder (3). The support ring (5) is movably sleeved on the grouting cylinder (3) and is located at the bottom of the docking ring (4). The support components are provided in multiple sets. The multiple sets of support components are equidistantly installed on the support ring (5) and are connected to the foundation (1). The positioning ring (10) is installed on the top of the foundation (1) and is movably sleeved on the grouting cylinder (3). The multiple sets of support components are connected to the positioning ring (10). The grouting mechanism is located inside the grouting cylinder (3); The compaction mechanism is located on the grouting mechanism. The compaction mechanism includes a reset component, a compaction plate (14), and an extrusion component. The reset component is provided in multiple sets, and all sets of the reset components are located on the grouting mechanism. The compaction plate (14) is provided in multiple sets, and each compaction plate (14) is located on each set of reset components. The extrusion component is located on the grouting mechanism and its extrusion component is connected to multiple compaction plates (14).

2. The adaptive grouting reinforcement structure for seepage prevention walls in hydropower construction projects as described in claim 1, characterized in that: The supporting component includes: The main support assembly is provided in multiple sets, and all sets of the main support assembly are located on the support ring (5); The docking components are provided in multiple sets, and each set of docking components is located on the main support component; The auxiliary support assembly is provided in multiple sets, and all sets of the auxiliary support assembly are located on the positioning ring (10), and each set of auxiliary support assembly is connected to each set of main support assembly.

3. The adaptive grouting reinforcement structure for seepage prevention walls in hydropower construction projects as described in claim 1, characterized in that: Each main support assembly includes a support sleeve (6) and a support telescopic rod (7). The support sleeve (6) is rotatably connected to the support ring (5), and the support telescopic rod (7) is movably connected inside the support sleeve (6).

4. The adaptive grouting reinforcement structure for seepage prevention walls in hydropower construction projects as described in claim 1, characterized in that: Each of the docking components includes a docking threaded groove (8) and a docking threaded post (9). There are two docking threaded grooves (8), and both docking threaded grooves (8) are opened at both ends inside the support sleeve rod (6). The docking threaded post (9) is fixedly connected to one end of the support telescopic rod (7).

5. The adaptive grouting reinforcement structure for seepage prevention walls in hydropower construction projects as described in claim 1, characterized in that: Each set of auxiliary support components includes a docking seat (24) and an auxiliary support telescopic rod (11). The docking seat (24) is fixedly connected to the positioning ring (10). One end of the auxiliary support telescopic rod (11) is rotatably connected to the support sleeve rod (6), and the other end of the auxiliary support telescopic rod (11) is installed in the docking seat (24).

6. The adaptive grouting reinforcement structure for seepage prevention walls in hydropower construction projects as described in claim 1, characterized in that: The grouting mechanism includes a grouting pipe (23) and a grouting head (12). The grouting pipe (23) is installed inside the grouting cylinder (3). The grouting head (12) is fixedly connected to the grouting pipe (23). A shrinkage groove (13) is provided on the grouting head (12). Multiple tamping plates (14) are provided in the shrinkage groove (13).

7. The adaptive grouting reinforcement structure for seepage prevention walls in hydropower construction projects as described in claim 1, characterized in that: Each set of reset components includes a reset spring (15), a guide rod (16), and a guide sleeve (17). There are multiple reset springs (15), and the multiple reset springs (15) are fixedly connected at equal intervals in the shrinkage groove (13) and fixedly connected to the compaction plate (14). There are multiple guide rods (16), and the multiple guide rods (16) are fixedly connected at equal intervals in the compaction plate (14). There are multiple guide sleeves (17), and the multiple guide sleeves (17) are fixedly connected at equal intervals in the shrinkage groove (13). Each guide rod (16) is movably connected to each guide sleeve (17).

8. The adaptive grouting reinforcement structure for seepage prevention walls in hydropower construction projects as described in claim 1, characterized in that: The extrusion component includes a bidirectional screw (19), a drive motor (22), a top frustum sleeve (18), and a synchronization component. There are multiple bidirectional screws (19), and multiple guide sleeves (17) are rotatably connected in the shrinkage groove (13). The drive motor (22) is fixedly connected in the grouting head (12), and the output end of the drive motor (22) is fixedly connected to one end of one of the bidirectional screws (19). There are two top frustum sleeves (18), and both top frustum sleeves (18) are movably fitted in the shrinkage groove (13), and both top frustum sleeves (18) are threadedly connected to multiple bidirectional screws (19). The synchronization component is provided on multiple bidirectional screws (19).

9. The adaptive grouting reinforcement structure for seepage prevention walls in hydropower construction projects as described in claim 1, characterized in that: The synchronization component includes a synchronization gear (20) and a synchronization ring (21). There are multiple synchronization gears (20), each of which is fixedly connected to one end of each bidirectional screw (19). The synchronization ring (21) is rotatably connected to the grouting head (12), and the synchronization ring (21) meshes with the multiple synchronization gears (20).

10. A construction method for adaptive grouting reinforcement of anti-seepage walls in hydropower construction projects, characterized in that, The adaptive grouting reinforcement structure for the seepage prevention wall of hydropower construction projects, as described in any one of claims 1-9, includes the following steps: S1. Drilling: Drill grouting holes (2) of specified depth and diameter on the foundation (1) that needs to be reinforced according to the design drawings. Place the positioning ring (10) precisely on the surface of the foundation (1) above the grouting hole (2) and fix it to ensure that its center is aligned with the center of the grouting hole (2). S2. Install the grouting cylinder: Insert the grouting cylinder (3) vertically into the grouting hole (2) through the center of the positioning ring (10). When the grouting cylinder (3) is lowered to near the design depth, stop lowering. At this time, the docking ring (4) fixedly connected to the grouting cylinder (3) docks with the movable support ring (5). Manually or drive the multiple sets of support components on the support ring (5) to rotate and adjust the support telescopic rod (7) in each set of support components so that it extends out from the support sleeve (6). The docking threaded column (9) at the end of the support telescopic rod (7) is screwed into the docking threaded groove (8) at the bottom of the support sleeve (6) and locked. The end of the extended support telescopic rod (7) will be firmly inserted into the foundation (1). Adjust the length of each set of auxiliary support telescopic rods (11) so that one end is connected to the appropriate position of the support sleeve (6) and the other end is installed in the docking seat (24) fixed on the positioning ring (10) to complete the support. S3, Insert the grouting and compaction mechanism: Insert the assembled grouting mechanism and compaction mechanism into the fixed grouting cylinder (3) from above, and lower it to the designed grouting depth; S4: Grouting and synchronous compaction: Before grouting, start the drive motor (22). The drive motor (22) drives one of the bidirectional screws (19) to rotate. Through the meshing transmission of the synchronous gear (20) and the synchronous gear ring (21), all the bidirectional screws (19) rotate synchronously in the same direction. The rotating bidirectional screws (19) drive the two top frustum sleeves (18) to move closer to each other along the axial direction. When they move towards each other, their conical surfaces will squeeze the inclined surfaces inside multiple compaction plates (14). Under the squeezing of the top frustum sleeves (18) Under the influence of the tension of the return spring (15), multiple tamping plates (14) overcome the tension of the return spring (15) and expand radially outward from the shrinkage groove (13) along the guiding direction of the guide rod (16) and the guide sleeve (17). The outwardly expanding tamping plates (14) tampe the inner wall of the grouting hole 2. After completion, the drive motor (22) reverses, and the tamping plates (14) shrink through the return spring 15. The grout is pumped to the grouting head (12) through the grouting pipe (23). The grout flows out from the outlet of the grouting head (12) and begins to fill the gaps or cracks in the surrounding foundation (1).

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