A device for repairing and reinforcing a retaining wall in an underground excavation area of a water conservancy project

Abstract

The application relates to the technical field of water conservancy excavation repair support, and provides a retaining wall repair and reinforcement device for an underground excavation area of a water conservancy project, which comprises an adjustable retaining wall fitting assembly, a multi-angle support assembly, a lifting support assembly and a bearing piece. The multi-angle support assembly comprises a support frame and a second support block, the second support block is fixedly connected with one end of the support frame, the adjustable retaining wall fitting assembly comprises a first hydraulic support rod, a first moving seat, a first connecting rod, a rotating rod, a first support block and an elastic plate, the two ends of the first hydraulic support rod are fixedly connected with the support frame and the first moving seat respectively, the first support block is fixedly connected with one end of the rotating rod, the first connecting rod is hingedly connected between the other end of the rotating rod and the first moving seat, the rotating rod is rotationally arranged on the surface of the support frame at the middle position, the two groups of first support blocks are fixedly connected with the elastic plate, and the elastic plate is slidably arranged in the second support block. The device has the characteristics of wide application range, good support effect and support for complex shape features.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of water conservancy excavation repair support, in particular to a water conservancy engineering underground excavation area retaining wall repair and reinforcement device. BACKGROUND

[0002] In water conservancy projects, excavation retaining walls are key structures for ensuring slope stability and preventing soil collapse, and are widely used in river regulation, reservoir construction, dike protection, bank protection and water diversion tunnel inlet and outlet engineering scenes. Such structures are subjected to complex loads such as water and soil pressure, seepage erosion and freeze-thaw cycles for a long time. In particular, in water conservancy projects, wall cracking, overturning and even local collapse often occur due to material aging, foundation settlement or overloading operation, and efficient and reliable temporary repair and reinforcement support devices are urgently needed to ensure safety during rescue and create conditions for permanent repair.

[0003] After retrieval, the publication number CN118911197B discloses a water conservancy engineering collapsed hydraulic retaining wall repair and reinforcement structure, which comprises a base, the top of the base is provided with a horizontally movable retaining wall body, a plurality of water-permeable layer water collecting devices are horizontally installed on one side of the retaining wall body, water collecting devices are provided with conveying flow channels inside, each group of conveying flow channels is provided with a communication lower water pipe, the bottom of the conveying flow channel is provided with a water tank, a rotating shaft capable of rotating is horizontally installed at the center of the conveying flow channel, and elastic telescopic mounting brackets are equidistantly installed outside the rotating shaft, the output end of the elastic telescopic mounting bracket is movably connected with a cleaning plate capable of moving longitudinally to clean the inner surface of the conveying flow channel. The cleaning plate can clean the inner wall of the conveying flow channel of the retaining wall, and the problem of inconvenient cleaning caused by blockage in the conveying flow channel is solved.

[0004] The particularity of the water conservancy environment determines that the shape of the retaining wall is complex and variable. Due to the limitation of topography and geology, the wall in the underground excavation area often has different inclination angles (vertical, inclined upward and inclined downward), and some walls often have protruding structures (drainage pipe openings, monitoring equipment bases and expansion joint edges) or local defects (bulging and concave). Although there are many support devices for repairing and reinforcing the retaining wall in the underground excavation area of water conservancy projects, there are still some problems when repairing the retaining wall in water conservancy excavation: (1) most rigid support frames cannot flexibly adjust the curvature or lack quantitative adjustment mechanism, resulting in gaps between the support surface and the curved wall, uneven pressure distribution and secondary damage; (2) when facing wall protrusions or concave structures, traditional flat support plates lack local deformation ability, resulting in point contact or suspension, reducing effectiveness. SUMMARY

[0005] The purpose of the present application is to provide a water conservancy engineering underground excavation area retaining wall repair and reinforcement device to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a device for repairing and reinforcing retaining walls in underground excavation areas of water conservancy projects, comprising a multi-angle support assembly, a lifting support assembly, and a load-bearing component. The lifting support assembly is connected to the load-bearing component, and the multi-angle support assembly is connected to the lifting support assembly. The multi-angle support assembly includes a support frame and a second support block, the second support block being fixedly connected to one end of the support frame. The device also includes:

[0007] An adjustable retaining wall fitting assembly includes a first hydraulic strut, a first movable seat, a first connecting rod, a rotating rod, a first support block, and an elastic plate. The first hydraulic strut is fixedly connected at both ends to a support frame and the first movable seat, respectively. The first support block is fixedly connected to one end of the rotating rod. The first connecting rod is hinged between the other end of the rotating rod and the first movable seat. The rotating rod is rotatably mounted on the surface of the support frame at its middle position. Two sets of the first connecting rod, rotating rod, and first support block are symmetrical about a second support block. An elastic plate is fixedly connected between the two sets of the first support blocks, and the elastic plate is slidably disposed within the second support block.

[0008] As a further embodiment of the present invention, the lifting support assembly includes a lifting frame, a third hydraulic strut, a second movable seat, a fourth hydraulic strut, and a second connecting rod. The third hydraulic strut is fixedly connected between the lifting frame and the load-bearing component. The other end of the support frame is rotatably disposed within the lifting frame. The second connecting rod is hinged between the lifting frame and the second movable seat. The fourth hydraulic strut is fixedly connected between the second movable seat and the load-bearing component. The second movable seat is slidably disposed on the surface of the load-bearing component.

[0009] As a further embodiment of the present invention, the multi-angle support assembly further includes a first limiting groove, a second hydraulic strut, and a rotating shaft. The support frame surface is provided with a first limiting groove, the first movable seat is slidably disposed in the first limiting groove, the end of the support frame is fixedly connected to a rotating shaft, the rotating shaft is rotatably disposed in the lifting frame, and the second hydraulic strut is hinged between the support frame and the lifting frame.

[0010] As a further embodiment of the present invention, the bearing member includes a base, a longitudinal guide rail, a second limiting groove and a third limiting groove. The longitudinal guide rail is fixedly disposed on the surface of the base. The third hydraulic support rod is fixedly connected inside the longitudinal guide rail. The fourth hydraulic support rod is fixedly connected to the base. The lifting frame is slidably sleeved on the outside of the longitudinal guide rail. The base is provided with a second limiting groove and a third limiting groove on its upper and lower sides, respectively. The second movable seat is slidably disposed in the second limiting groove.

[0011] As a further embodiment of the present invention, an anti-slip component is also included. The anti-slip component includes a base plate, a drill bit, a threaded tube, a threaded rod, and a transmission gear. The threaded tube is rotatably disposed on the surface of the base. The threaded rod is threadedly connected to the inside of the threaded tube. The base plate is fixedly connected to the threaded rod. A plurality of drill bits are fixedly disposed on the surface of the base plate. The base plate is slidably disposed in a third limiting groove. The transmission gear is fixedly connected to the surface of the threaded tube.

[0012] As a further embodiment of the present invention, the lifting support assembly further includes racks, with two sets of racks respectively fixedly disposed on both sides of the second movable seat, and the transmission gears being connected to the racks in a transmission manner.

[0013] As a further embodiment of the present invention, a pointer is fixedly provided on the surface of the first movable seat, and a scale is provided on the surface of the support frame.

[0014] The beneficial effects of the present invention are as follows: (1) Under the premise of controlling the arc size formed by the two sets of first support blocks about the rotation center of the rotating rod, the present application can better fit and support the arc-shaped retaining wall and the flat retaining wall by using the evenly distributed second support block and the two sets of first support blocks, thereby providing a more uniform support force for retaining walls of different shapes, and has the characteristics of wide applicability and good support effect.

[0015] (2) This application utilizes an elastic plate connected between the second support block and the two sets of first support blocks, which can not only form the second support block and the two sets of first support blocks into an organic whole, enhance the toughness of the entire bonding component, distribute the load applied to the retaining wall, reduce local stress and improve overall stability, but also take into account the complex shape characteristics of the retaining wall, thus having the characteristics of good support effect and taking into account the complex shape characteristics of the support. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention.

[0017] Figure 2 This is an exploded view of the present invention.

[0018] Figure 3 This is a perspective view of the adjustable retaining wall bonding component according to an embodiment of the present invention.

[0019] Figure 4 This is an assembly diagram of the adjustable retaining wall bonding component and the multi-angle support component according to an embodiment of the present invention.

[0020] Figure 5 This is a perspective view of the lifting support assembly according to an embodiment of the present invention.

[0021] Figure 6 This is an assembly diagram of the lifting support assembly and anti-slip assembly according to an embodiment of the present invention.

[0022] Figure 7 This is a perspective view of the carrier component according to an embodiment of the present invention.

[0023] Figure 8 This is a cross-sectional view of the present invention.

[0024] Figure 9 This is a side view of the present invention.

[0025] Figure 10 This is a first partial top view of the present invention.

[0026] Figure 11 This is a second partial top view of the present invention.

[0027] Reference numerals in the attached drawings: 1-Adjustable retaining wall fitting assembly, 11-First hydraulic strut, 12-First movable seat, 13-First connecting rod, 14-Rotating rod, 15-First support block, 16-Elastic plate, 17-Pointer;

[0028] 2-Multi-angle support assembly, 21-Support frame, 22-First limiting groove, 23-Second support block, 24-Second hydraulic strut, 25-Rotating shaft, 26-Scale;

[0029] 3-Lifting support assembly, 31-Lifting frame, 32-Third hydraulic strut, 33-Second movable seat, 34-Fourth hydraulic strut, 35-Second connecting rod, 36-Rack and pinion;

[0030] 4-Bearing component, 41-Base, 42-Longitudinal guide rail, 43-Second limiting groove, 44-Third limiting groove;

[0031] 5-Anti-slip component, 51-Base plate, 52-Bristle tip, 53-Threaded tube, 54-Threaded rod, 55-Transmission gear. Detailed Implementation

[0032] 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 specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0033] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0034] Please see Figures 1 to 4 , Figure 10 and Figure 11In one embodiment of the present invention, a device for repairing and reinforcing retaining walls in underground excavation areas of water conservancy projects includes a multi-angle support assembly 2, a lifting support assembly 3, and a load-bearing member 4. The lifting support assembly 3 is connected to the load-bearing member 4, and the multi-angle support assembly 2 is connected to the lifting support assembly 3. The multi-angle support assembly 2 includes a support frame 21 and a second support block 23, the second support block 23 being fixedly connected to one end of the support frame 21. The device also includes:

[0035] An adjustable retaining wall fitting assembly 1 includes a first hydraulic strut 11, a first movable seat 12, a first connecting rod 13, a rotating rod 14, a first support block 15, and an elastic plate 16. The first hydraulic strut 11 is fixedly connected at both ends to a support frame 21 and the first movable seat 12, respectively. The first support block 15 is fixedly connected to one end of the rotating rod 14. The first connecting rod 13 is hinged between the other end of the rotating rod 14 and the first movable seat 12. The rotating rod 14 is rotatably positioned on the surface of the support frame 21 at its middle position. Two sets of the first connecting rod 13, rotating rod 14, and first support block 15 are symmetrical about a second support block 23. An elastic plate 16 is fixedly connected between the two sets of the first support blocks 15. The elastic plate 16 is slidably disposed within the second support block 23. The elastic plate 16 is made of telescopic steel strip, possessing strong corrosion resistance and high hardness.

[0036] Please see Figure 3 , Figure 4 , Figure 10 and Figure 11 Furthermore, a pointer 17 is fixedly provided on the surface of the first movable seat 12, and a scale 26 is provided on the surface of the support frame 21. The rotation center of the rotating rod 14 is distributed between the second support block 23 and the first movable seat 12. The displacement of the first movable seat 12 controls the change in the rotation angle or rotation arc of the rotating rod 14. By observing the value of the scale 26 corresponding to the pointer 17, it can be determined whether the rotation angle of the rotating rod 14 or the arc formed by the two sets of first support blocks 15 about the rotation center of the rotating rod 14 is consistent with the arc of the retaining wall. By adjusting the rotation angle of the rotating rod 14 before support, the second support block 23 and the two sets of first support blocks 15 can better fit and support the arc-shaped retaining wall.

[0037] In this embodiment of the invention, reference is made to the appendix. Figure 10When the retaining wall to be repaired is an arc-shaped structure, the first hydraulic strut 11 is used to control the first moving seat 12 to slide within the first limiting groove 22. The sliding first moving seat 12 controls the rotation of two sets of rotating rods 14 through two sets of first connecting rods 13. By checking the scale 26 (radian value) corresponding to the pointer 17, the size of the arc formed by the two sets of first support blocks 15 about the rotation center of the rotating rods 14 can be controlled. This not only allows for adaptive adjustment according to the arc-shaped feature size of the retaining wall to be repaired, but is also applicable to the measurement of the arc-shaped feature size of the retaining wall to be repaired. It should be noted that a pressure sensor module can also be installed on the support surface of the first support block 15 or the second support block 23 to monitor the change of support force in real time. By monitoring the change of support force parameters, it can be determined whether the angle of the retaining wall to be repaired is in a dynamic change stage, which helps the staff to formulate a detailed maintenance and rescue plan. At this time, the evenly distributed second support block 23 and the two sets of first support blocks 15 can better fit and support the arc-shaped retaining wall and provide a more uniform support force.

[0038] Reference Appendix Figure 11 When the retaining wall to be repaired is flat, the two sets of first support blocks 15 can be adjusted to be on the same plane as the second support block 23 using the above operation method. The elastic plate 16 connecting the second support block 23 and the two sets of first support blocks 15 can not only form the second support block 23 and the two sets of first support blocks 15 into an organic whole, enhance the toughness of the entire bonding component, distribute the load applied to the retaining wall, reduce local stress and improve overall stability, but also take into account the complex shape features of the retaining wall (such as complex structural protrusions or architectural features distributed between the second support block 23 and the first support block 15). It has the characteristics of wide applicability, good support effect and taking into account the support of complex shape features.

[0039] Please see Figure 1 , Figure 5 and Figure 6 In one embodiment of the present invention, the lifting support assembly 3 includes a lifting frame 31, a third hydraulic strut 32, a second movable seat 33, a fourth hydraulic strut 34, and a second connecting rod 35. The third hydraulic strut 32 is fixedly connected between the lifting frame 31 and the bearing member 4. The other end of the support frame 21 is rotatably disposed within the lifting frame 31. The second connecting rod 35 is hinged between the lifting frame 31 and the second movable seat 33. The fourth hydraulic strut 34 is fixedly connected between the second movable seat 33 and the bearing member 4. The second movable seat 33 is slidably disposed on the surface of the bearing member 4.

[0040] Please see Figure 1 , Figure 7 and Figure 8Furthermore, the bearing member 4 includes a base 41, a longitudinal guide rail 42, a second limiting groove 43, and a third limiting groove 44. The longitudinal guide rail 42 is fixedly disposed on the surface of the base 41. The fixed end of the third hydraulic strut 32 is fixedly connected to the longitudinal guide rail 42. The fixed end of the fourth hydraulic strut 34 is fixedly connected to the base 41. The lifting frame 31 is slidably sleeved on the outside of the longitudinal guide rail 42. The base 41 is provided with a second limiting groove 43 and a third limiting groove 44 on its upper and lower sides, respectively. The second movable seat 33 is slidably disposed in the second limiting groove 43.

[0041] In this embodiment of the invention, in the initial state, in order to reduce the volume of the entire device, the height of the lifting frame 31 is at its lowest point. In order to meet the support height requirements of the retaining wall, when the bearing 4 is moved to the vicinity of the support point, the lifting frame 31 is first controlled to rise along the longitudinal guide rail 42 simultaneously using the third hydraulic strut 32 and the fourth hydraulic strut 34. The third hydraulic strut 32 directly applies longitudinal force to the lifting frame 31, and the fourth hydraulic strut 34 transmits the horizontal thrust to the lifting frame 31 through the second connecting rod 35 by moving the second moving seat 33. The second connecting rod 35 and the fourth hydraulic strut 34 are used to improve the stability of the retaining wall support.

[0042] Please see Figure 1 , Figure 4 and Figure 8 In one embodiment of the present invention, the multi-angle support assembly 2 further includes a first limiting groove 22, a second hydraulic strut 24, and a rotating shaft 25. The support frame 21 is provided with a first limiting groove 22. The first movable seat 12 is slidably disposed in the first limiting groove 22. The end of the support frame 21 is fixedly connected to the rotating shaft 25. The rotating shaft 25 is rotatably disposed in the lifting frame 31. The second hydraulic strut 24 is hinged between the support frame 21 and the lifting frame 31. The fixed end of the first hydraulic strut 11 is fixedly connected in the first limiting groove 22.

[0043] In this embodiment of the invention, pins are fixedly provided on the surfaces of both the support frame 21 and the lifting frame 31. Two sets of rotating rods 14 are rotatably connected to the two sets of pins on the support frame 21, respectively. The movable end of the second hydraulic strut 24 is rotatably connected to the pin on the support frame 21, and the fixed end of the second hydraulic strut 24 is rotatably connected to the pin on the surface of the lifting frame 31. When it is necessary to adjust the support angle of the adjustable retaining wall bonding component 1, the second hydraulic strut 24 is used to control the support frame 21 and the adjustable retaining wall bonding component 1 to rotate simultaneously around the rotating shaft 25 as the axis. This can meet the support of retaining walls with different inclination angles, including the support of underground excavation walls in water conservancy construction, and has the feature of multi-angle support.

[0044] Please see Figure 1 , Figure 8 and Figure 9In one embodiment of the present invention, an anti-slip component 5 is further included. The anti-slip component 5 includes a base plate 51, a drill bit 52, a threaded tube 53, a threaded rod 54, and a transmission gear 55. The threaded tube 53 is rotatably disposed on the surface of the base 41. The threaded rod 54 is threadedly connected to the threaded tube 53. The base plate 51 is fixedly connected to the threaded rod 54. A plurality of drill bits 52 are fixedly disposed on the surface of the base plate 51. The base plate 51 is slidably disposed in the third limiting groove 44. The transmission gear 55 is fixedly connected to the surface of the threaded tube 53.

[0045] Please see Figure 5 Furthermore, the lifting support assembly 3 also includes racks 36, with two sets of racks 36 respectively fixedly disposed on both sides of the second movable seat 33, and the transmission gear 55 being connected to the racks 36 in a transmission manner.

[0046] In this embodiment of the invention, during the entire process of the moving second moving seat 33 being connected to and disconnected from the transmission via the rack 36 and the transmission gear 55, the horizontal thrust of the fourth hydraulic strut 34 can drive the threaded tube 53 to rotate. The rotating threaded tube 53 controls the base plate 51 to descend along the third limiting groove 44 via the threaded rod 54, thereby inserting several drill bits 52 into the ground to enhance the stability and grip of the entire device. The base 41 can be automatically fixed to the ground during the preparation stage before support.

[0047] In summary, this application, by controlling the arc formed by the two sets of first support blocks 15 about the rotation center of the rotating rod 14, and by utilizing the evenly distributed second support block 23 and the two sets of first support blocks 15, can better fit and support the curved retaining wall and the flat retaining wall, thereby providing a more uniform support force for retaining walls of different shapes. It has the characteristics of wide applicability and good support effect.

[0048] This application utilizes an elastic plate 16 connected between the second support block 23 and the two sets of first support blocks 15. This plate not only forms the second support block 23 and the two sets of first support blocks 15 into an organic whole, enhances the toughness of the entire bonding assembly, disperses the load applied to the retaining wall, reduces local stress, and improves overall stability, but also takes into account the complex shape features of the retaining wall (such as complex structural protrusions or wall features distributed between the second support block 23 and the first support block 15). It has the characteristics of good support effect and taking into account the complex shape features.

[0049] This application, through its multi-angle adjustment and extension functions, is not only suitable for multi-angle auxiliary support of retaining walls to be repaired, but also for the support and maintenance of underground excavation structures in hydraulic construction such as cantilever beams and bridges, and has the characteristics of wide applicability and strong functionality.

[0050] While several embodiments and examples of the present invention have been described for those skilled in the art, these embodiments and examples are provided as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention.

[0051] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for repairing and reinforcing retaining walls in underground excavation areas of water conservancy projects, comprising a multi-angle support assembly (2), a lifting support assembly (3), and a bearing member (4), wherein the lifting support assembly (3) is connected to the bearing member (4), the multi-angle support assembly (2) is connected to the lifting support assembly (3), the multi-angle support assembly (2) comprises a support frame (21) and a second support block (23), the second support block (23) being fixedly connected to one end of the support frame (21), characterized in that, Also includes: An adjustable retaining wall fitting assembly (1) includes a first hydraulic strut (11), a first movable seat (12), a first connecting rod (13), a rotating rod (14), a first support block (15), and an elastic plate (16). The first hydraulic strut (11) is fixedly connected at both ends to the support frame (21) and the first movable seat (12), respectively. The first support block (15) is fixedly connected to one end of the rotating rod (14). The first connecting rod (13) is hinged between the other end of the rotating rod (14) and the first movable seat (12). The rotating rod (14) is rotatably disposed on the surface of the support frame (21) at its middle position. The two sets of the first connecting rod (13), the rotating rod (14), and the first support block (15) are symmetrical about the center of the second support block (23). An elastic plate (16) is fixedly connected between the two sets of the first support blocks (15). The elastic plate (16) is slidably disposed in the second support block (23).

2. The device for repairing and reinforcing retaining walls in underground excavation areas of water conservancy projects according to claim 1, characterized in that, The lifting support assembly (3) includes a lifting frame (31), a third hydraulic strut (32), a second movable seat (33), a fourth hydraulic strut (34), and a second connecting rod (35). The third hydraulic strut (32) is fixedly connected between the lifting frame (31) and the carrier (4). The other end of the support frame (21) is rotatably disposed inside the lifting frame (31). The second connecting rod (35) is hinged between the lifting frame (31) and the second movable seat (33). The fourth hydraulic strut (34) is fixedly connected between the second movable seat (33) and the carrier (4). The second movable seat (33) is slidably disposed on the surface of the carrier (4).

3. The device for repairing and reinforcing retaining walls in underground excavation areas of water conservancy projects according to claim 2, characterized in that, The multi-angle support assembly (2) further includes a first limiting groove (22), a second hydraulic strut (24), and a rotating shaft (25). The support frame (21) is provided with a first limiting groove (22). The first movable seat (12) is slidably disposed in the first limiting groove (22). The end of the support frame (21) is fixedly connected to a rotating shaft (25). The rotating shaft (25) is rotatably disposed in the lifting frame (31). The second hydraulic strut (24) is hinged between the support frame (21) and the lifting frame (31).

4. The device for repairing and reinforcing retaining walls in underground excavation areas of water conservancy projects according to claim 3, characterized in that, The bearing component (4) includes a base (41), a longitudinal guide rail (42), a second limiting groove (43), and a third limiting groove (44). The longitudinal guide rail (42) is fixedly disposed on the surface of the base (41). The third hydraulic support rod (32) is fixedly connected inside the longitudinal guide rail (42). The fourth hydraulic support rod (34) is fixedly connected to the base (41). The lifting frame (31) is slidably sleeved on the outside of the longitudinal guide rail (42). The base (41) is provided with a second limiting groove (43) and a third limiting groove (44) on its upper and lower sides, respectively. The second moving seat (33) is slidably disposed in the second limiting groove (43).

5. A device for repairing and reinforcing retaining walls in underground excavation areas of water conservancy projects according to claim 4, characterized in that, It also includes an anti-slip component (5), which includes a base plate (51), a drill bit (52), a threaded tube (53), a threaded rod (54), and a transmission gear (55). The threaded tube (53) is rotatably disposed on the surface of the base (41), and the threaded rod (54) is threadedly connected to the threaded tube (53). The base plate (51) is fixedly connected to the threaded rod (54), and several drill bits (52) are fixedly disposed on the surface of the base plate (51). The base plate (51) is slidably disposed in the third limiting groove (44), and the transmission gear (55) is fixedly connected to the surface of the threaded tube (53).

6. A device for repairing and reinforcing retaining walls in underground excavation areas of water conservancy projects according to claim 5, characterized in that, The lifting support assembly (3) also includes racks (36), with two sets of racks (36) fixedly mounted on both sides of the second movable seat (33), and the transmission gear (55) is connected to the racks (36) in a transmission connection.

7. A device for repairing and reinforcing retaining walls in underground excavation areas of water conservancy projects according to claim 1, characterized in that, A pointer (17) is fixedly provided on the surface of the first movable seat (12), and a scale (26) is provided on the surface of the support frame (21).

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