A sliding formwork system for roller compacted concrete dams and a method of using the same

Abstract

The application discloses a dam roller compacted concrete sliding formwork system and a use method thereof, and relates to the field of dam construction, and comprises a support rod group, a lifting formwork and an auxiliary platform; the support rod group comprises at least one support rod; the lifting formwork comprises a lifting frame and a form body unit, one end of the lifting frame is provided with a lifting jack, the lifting jack is used for being sleeved on the support rod, and the other end of the lifting frame is provided with the form body unit used for abnormal concrete forming; the auxiliary platform comprises a maintenance platform used for repairing and maintaining abnormal concrete, and the maintenance platform is hung at the bottom of the form body unit through a first connecting piece. The structure of the application is simple, the cost is low, continuous construction can be realized, defects can be repaired and removed in time, and the repair and maintenance of abnormal concrete can be conveniently implemented.

Description

Technical Field

[0001] This invention relates to the field of roller-compacted concrete dam construction technology in water conservancy and hydropower projects, and particularly to a sliding formwork system for roller-compacted concrete dams and its application method. Background Technology

[0002] Currently, the upstream and downstream faces of roller-compacted concrete dams are generally designed as modified concrete. Their linings typically use ordinary assembled formwork, customized large formwork, inverted formwork, or hydraulic climbing formwork, which can enable the modified concrete 2 and the roller-compacted concrete 1 of the dam to be constructed simultaneously.

[0003] Although the existing technology is relatively mature and widely used, there are still some prominent problems and shortcomings, mainly in the following aspects: First, the templates are numerous and heavy, making installation and dismantling inconvenient, and the structure and construction procedures are complex. Secondly, it requires a large investment of human, machine, and material resources, takes up a long time in the process, and has high project costs; Third, the concrete is constructed in layers, resulting in many joints and a large amount of interlayer treatment, making continuous pouring impossible. Fourth, demolding can only be done after the material has hardened, which means that defects cannot be dealt with in time and effective maintenance cannot be implemented. Fifth, it is not well matched with the speed of roller-compacted concrete, which restricts the construction progress and project quality.

[0004] Therefore, based on the shortcomings found in actual field work, we propose a sliding formwork system for roller-compacted concrete of dams and its application method. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a sliding formwork system for roller-compacted concrete of dams that is simple in structure, low in cost, allows for continuous construction, enables timely demolding and defect repair, and facilitates convenient and effective maintenance.

[0006] Another technical problem to be solved by the present invention is to provide a method for using a sliding formwork system for roller-compacted concrete in dams.

[0007] To achieve the above-mentioned technical features, the objective of this invention is as follows: In a first aspect, the present invention proposes a sliding formwork system for roller-compacted concrete of dams, including multiple sets of support rods for pre-embedding and installing into modified concrete, a lifting formwork for installing onto the support rods, and an auxiliary platform for installing onto the underside of the lifting formwork. The support rod assembly includes at least one support rod; The lifting frame includes a lifting frame and a mold unit. A lifting jack is installed at one end of the lifting frame, which is used to fit onto the support rod. The mold unit for molding modified concrete is installed at the other end of the lifting frame. A working platform is formed on the top of the mold unit. The auxiliary platform includes a curing platform for repairing and maintaining the modified concrete, which is suspended from the bottom of the formwork unit by a first connector.

[0008] The mold unit includes a template and a truss. The truss is fixedly connected to the lifting frame, and the template is fixedly connected to the truss. The template is located on one side of the modified concrete and is used to form with the modified concrete.

[0009] The remaining sides of the truss are enclosed by plates to form a water tank structure; the water tank structure is equipped with inlet and outlet pipes, and valves are installed on the inlet and outlet pipes respectively.

[0010] The maintenance platform is equipped with a water spraying device, which is connected to the water outlet pipe on the water tank structure through a pipeline, so as to use the water in the water tank structure as a water source to spray water on the modified concrete for maintenance in a timely manner.

[0011] The support rod assembly includes three support rods arranged in a triangle, with a lifting jack installed on each support rod; reinforcing ribs are provided between the three support rods and on the lower side of the lifting frame.

[0012] The lifting frame includes a horizontal frame and a vertical frame. The lifting jack is installed on the horizontal frame, and the vertical frame is fixed to one end of the horizontal frame. Each vertical frame is installed and fixed to the mold unit.

[0013] It also includes multiple anti-buoyancy rails, which are spaced apart on the outside of the mold unit, and the mold unit is slidably connected to the anti-buoyancy rails; The anti-buoyancy track is connected and supported to the modified concrete via multiple sets of tie devices on the lower side of the truss; or it is simultaneously connected and supported to roller-compacted concrete and modified concrete. The maintenance platform is provided in multiple ways, and the tie device is located between two adjacent maintenance platforms.

[0014] The tying device includes a tie rod, a connecting nut, and a connecting rod. One end of the tie rod is fixed to the connecting nut. The tie rod is embedded in the modified concrete, or in roller-compacted concrete and modified concrete. The connecting nut is embedded on one side of the end face of the modified concrete. One end of the connecting rod is screwed to the connecting nut for fixation, and the other end is connected to the anti-buoyancy track to fix the anti-buoyancy track. The top of the anti-buoyancy track is connected to the corresponding support rod group through a slide.

[0015] Each layer of the tie device includes two tie rods and two connecting rods located on both sides of the anti-buoyancy track. The two connecting rods are respectively equipped with limit plates for clamping the anti-buoyancy track by limit nuts on the left and right sides of the anti-buoyancy track.

[0016] The anti-buoyancy track is formed by connecting and installing multiple track units.

[0017] A track removal platform is also installed on the lower side of the curing platform; the track removal platform includes a basket and a second connector. The basket is suspended below two adjacent curing platforms through the second connector. The side of the basket away from the deformed concrete extends outward, and the anti-buoyancy track passes through the avoidance hole at the bottom of the basket.

[0018] Secondly, the present invention also provides a method of using the sliding template system, comprising the following steps: During the pouring of modified concrete, multiple sets of support rods are pre-embedded at intervals along the length of the dam within the modified concrete. After the modified concrete is poured to a certain height, tie bars and butt nuts are pre-embedded in layers within the modified concrete; a lifting formwork is installed on the support rod assembly, and the lifting jack passes through the support rod in the support rod assembly, with the formwork unit abutting against the outside of the modified concrete. As the lifting formwork is raised, an auxiliary platform is installed at the bottom of the formwork unit; personnel stand on the curing platform to repair quality defects in the deformed concrete after demolding, treat embedded parts, and spray water to cure the deformed concrete. After the concrete has been poured to a certain height, multiple suspended baskets are placed in the designated positions. Then, connecting rods are installed using mating nuts, and track units for fixing the anti-buoyancy track are installed using the connecting rods. The track units pass through the clearance holes at the bottom of the suspended baskets, and the suspended baskets are suspended and installed below two adjacent curing platforms using the second connector. The top of the anti-buoyancy track is connected to the corresponding support rod group via a slide. As the lifting frame is further raised, the connecting rods and track units on the lower side are removed through the suspended basket. The connecting rods and track units are then transferred to the working platform via the maintenance platform, so that the connecting rods and track units can be used in a cycle from bottom to top.

[0019] Compared with the prior art, the beneficial effects of the present invention include: 1. This invention pre-embeds support rods into the modified concrete. After the modified concrete has cured, the support rods are fixed, ensuring their stability. The formwork unit in the lifting mold is raised along the support rods using lifting jacks. Simultaneously, the formwork unit is guided by the lifting jacks to prevent displacement. The formwork unit is located on the outside of the modified concrete, enabling the molding of the modified concrete and achieving simultaneous continuous construction of the dam's roller-compacted concrete and modified concrete. A working platform is formed on top of the formwork unit. This platform is the main control point for the lifting mold's movement and can be equipped with a hydraulic station to control the lifting jacks. It also serves as a storage area for related tools and equipment. An auxiliary platform is installed below the lifting mold, facilitating timely repair of defects in the demolded modified concrete, processing of embedded parts, and water curing of the modified concrete. Compared to existing solutions, this invention has a simpler structure, lower cost, allows for continuous construction, timely demolding and defect repair, and facilitates the repair and curing of modified concrete.

[0020] 2. The remaining sides of the truss of this invention are enclosed by plates to form a water tank structure. A water spraying device is installed on the curing platform, and the water spraying device is connected to the water outlet pipe on the water tank structure through a pipe to use the water in the water tank structure as a water source to spray water on the modified concrete for curing as needed.

[0021] 3. This invention, by setting up anti-buoyancy rails and combining them with a tie-down device, further ensures that the module unit does not shift during operation. Furthermore, the anti-buoyancy rails are formed by the docking and installation of multiple rail units, facilitating their installation and reuse after disassembly.

[0022] 4. A track removal platform is also installed on the lower side of the maintenance platform of this invention. By setting up the track removal platform, the connecting rods and anti-buoyancy rails on the lower side can be disassembled, thereby enabling the connecting rods and anti-buoyancy rails to be reused.

[0023] 5. When used, this invention conforms to the law of concrete strength increase, enabling timely demolding, immediate defect elimination, and timely curing, which is beneficial to the release of hydration heat and concrete quality control.

[0024] 6. This invention reduces the cumbersome process of frequent template installation and removal, eliminating many potential safety hazards. Furthermore, both the curing platform and the suspended platform can adopt a fully enclosed structure, ensuring safe construction.

[0025] 7. This invention can be matched with the speed of roller-compacted concrete, enabling continuous construction without construction joints or interlayer treatment, and can effectively improve construction progress and project quality. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the cross-sectional arrangement of the present invention.

[0028] Figure 2 This is a schematic diagram of the floor plan.

[0029] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.

[0030] In the picture: Roller-compacted concrete 1, modified concrete 2; Support rod assembly 10, support rod 11, reinforcing rib 12; Lifting formwork 20, lifting frame 21, horizontal frame 211, vertical frame 212, lifting jack 22, formwork 23, truss 24, working platform 25, guardrail 26; Anti-buoyancy track 30, carriage 31; Tie device 40, tie rod 41, butt nut 42, connecting rod 43, limit nut 44, limit plate 45; Auxiliary platform 50, maintenance platform 51, first connecting part 52, water spraying device 53; Track removal platform 60, suspended platform 61, second connecting piece 62. Detailed Implementation

[0031] To more clearly illustrate the purpose, technical solution, and beneficial effects of this application, a further detailed description of this application is provided below in conjunction with illustrations and specific embodiments. It should be specifically noted that the specific embodiments described below are only for illustrating the technical content of this application and do not constitute a limitation on the scope of protection of this application.

[0032] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0033] In the description of this invention, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating a connection between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection via an intermediate medium; it can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] Example 1: like Figure 1-3 This embodiment provides a sliding formwork system for roller-compacted concrete in dams, including three sets of support rod assemblies 10 for pre-embedding and installing into modified concrete 2, a lifting formwork 20 for mounting onto the support rod assemblies 10, and an auxiliary platform 50 for mounting onto the underside of the lifting formwork 20; the support rod assembly 10 includes at least one support rod 11; the lifting formwork 20 includes a lifting frame 21 and a formwork unit, one end of the lifting frame 21 is equipped with a lifting jack 22 for fitting onto the support rod 11, and the other end of the lifting frame 21 is equipped with a formwork unit for molding the modified concrete 2; a working platform 25 is formed on the top of the formwork unit; combined with Figure 2 The length of the mold unit is consistent with the width of the joint line of the dam section; the auxiliary platform 50 includes a curing platform 51 for repairing and curing the modified concrete 2, and the curing platform 51 is suspended from the bottom of the mold unit by the first connector 52.

[0035] By pre-embedding the support rod assembly 10 into the modified concrete 2, and then fixing the support rod assembly 10 after the modified concrete 2 has cured, the stability of the support rod assembly 10 is ensured. The formwork unit in the lifting formwork 20 is raised along the support rod assembly 10 by lifting jacks 22. Simultaneously, the formwork unit is guided by the lifting jacks 22 to prevent displacement. The formwork unit is located on the outside of the modified concrete 2, thus enabling the molding construction of the modified concrete 2 and achieving synchronous and continuous construction of the dam's roller-compacted concrete 1 and modified concrete 2. A working platform 25 is formed on top of the formwork unit. The working platform 25 is the main location for controlling the movement of the lifting formwork 20. A hydraulic station can be installed above it to control the movement of the lifting jacks 22, and it also serves as a storage area for related tools and equipment. Protective railings 26 can be installed around the working platform 25 for safety protection. An auxiliary platform 50 is installed below the lifting formwork 20, facilitating timely repair of quality defects in the deformed concrete 2 after demolding, treatment of embedded parts, and water curing of the deformed concrete 2 by manual labor on the curing platform 51. Through the above solution, compared with existing solutions, the structure of this invention is simpler, lower in cost, allows for continuous construction, timely demolding and defect repair, and facilitates the repair and curing of the deformed concrete 2.

[0036] In this embodiment, the lifting jack 22 adopts existing technology, such as a climbing hydraulic jack disclosed in CN2183986Y, which has climbing and locking functions. The first connecting member 52 can be four metal rods, which are welded between the curing platform 51 and the mold unit.

[0037] See Figure 1 The mold unit includes a template 23 and a truss 24. The truss 24 is fixedly connected to the lifting frame 21. The template 23 is fixedly connected to the truss 24 and is located on one side of the modified concrete 2 for molding with the modified concrete 2.

[0038] Specifically, the lifting frame 21 includes a transverse frame 211 and a longitudinal frame 212. The lifting jack 22 is installed on the transverse frame 211, and the longitudinal frame 212 is fixed to one end of the transverse frame 211. Each longitudinal frame 212 is welded and fixed to the truss 24 of the module unit.

[0039] In this embodiment, to improve the structural stability of the support rod assembly 10, each support rod assembly 10 includes three support rods 11, see [link to relevant documentation]. Figure 2 The three support rods 11 are arranged in a triangle, and each support rod 11 is equipped with a lifting jack 22. See also Figure 1 A reinforcing rib 12 is welded between the three support rods 11 and on the lower side of the lifting frame 21. By welding the reinforcing rib 12, the three support rods 11 are fixed together to form a stable truss structure, thereby ensuring the structural strength of the support rod assembly 10. Since the upper end of the support rod 11 is used to move the lifting jack 22, the reinforcing rib 12 is always welded and installed below the lifting jack 22 during welding.

[0040] Example 2: Based on Example 1, the remaining sides of the truss 24 are enclosed by plates to form a water tank structure; the water tank structure is equipped with inlet and outlet pipes, and valves are installed on the inlet and outlet pipes respectively. In use, by injecting water into the water tank structure, it can provide a water source for water spraying and curing, and also increase the weight on one side of the truss 24, so that the formwork 23 can be pressed against the modified concrete 2 side.

[0041] Further, see Figure 1 The maintenance platform 51 is equipped with a water spraying device 53, which is connected to the water outlet pipe on the water tank structure through a pipe to use the water in the water tank structure as a water source to spray water on the modified concrete 2 for maintenance as needed.

[0042] In this embodiment, the water spraying device 53 includes a water pump and a spray pipe. The water inlet of the water pump is connected to the water outlet pipe on the water tank structure through a pipe, and the water outlet of the water pump is connected to the spray pipe through a pipe. The nozzle of the spray pipe faces the modified concrete 2 side so as to spray the modified concrete 2 for timely curing.

[0043] Example 3: Based on Example 1 or Example 2, see Figure 1 , 2 The sliding template system of this application also includes three anti-buoyancy rails 30. The multiple anti-buoyancy rails 30 are spaced apart on the outside of the mold unit, and the mold unit is slidably connected to the anti-buoyancy rails 30.

[0044] Furthermore, the anti-buoyancy track 30 is connected and supported to the modified concrete 2 via multiple sets of tie devices 40 on the lower side of the truss 24; or it is simultaneously connected and supported to both the roller-compacted concrete 1 and the modified concrete 2. The anti-buoyancy track 30 is supported and fixed by the multiple sets of tie devices 40.

[0045] Multiple maintenance platforms 51 are provided, and the tie device 40 is located between two adjacent maintenance platforms 51, so that the maintenance platform 51 does not interfere with the tie device 40.

[0046] By setting up anti-buoyancy rails 30 and connecting devices 40, it is further ensured that the module unit does not shift during operation.

[0047] In this embodiment, see Figure 1 The tying device 40 includes a tie rod 41, a connecting nut 42, and a connecting rod 43. One end of the tie rod 41 is fixedly connected to the connecting nut 42. The tie rod 41 is embedded in the modified concrete 2, or embedded in both the roller-compacted concrete 1 and the modified concrete 2. The connecting nut 42 is embedded on one side of the end face of the modified concrete 2. One end of the connecting rod 43 is screwed and fixed to the connecting nut 42, and the other end is connected to the anti-buoyancy track 30 to fix the anti-buoyancy track 30. The top of the anti-buoyancy track 30 is connected to the corresponding support rod group 10 through a slide 31 to ensure the stability of the anti-buoyancy track 30.

[0048] Further, see Figure 2 Each layer and each location of the tie device 40 includes two tie rods 41 and two connecting rods 43 located on both sides of the anti-buoyancy track 30. The two connecting rods 43 are respectively equipped with limiting plates 45 for clamping the anti-buoyancy track 30 on the left and right sides of the anti-buoyancy track 30 by limiting nuts 44. The anti-buoyancy track 30 is clamped by the limiting plates 45 on both sides, which facilitates the installation and disassembly of the anti-buoyancy track 30.

[0049] In this embodiment, the anti-buoyancy track 30 is formed by connecting and installing multiple track units, which facilitates the installation of the anti-buoyancy track 30 and its reuse after disassembly.

[0050] In this embodiment, the anti-buoyancy track 30 can be made of seamless steel pipe with a diameter of 120-150 mm, processed in sections, with each section being about 4 meters long. The sections are connected by a socket joint for easy installation and disassembly. The carriage 31 can be a truss, which can be detachably installed on the support rod assembly 10 and the anti-buoyancy track 30 by means of clamps.

[0051] Example 4: Based on Example 3, see Figure 1 A track removal platform 60 is also installed on the lower side of the maintenance platform 51. By setting up the track removal platform 60, the connecting rod 43 and the anti-buoyancy track 30 on the lower side can be disassembled, so that the connecting rod 43 and the anti-buoyancy track 30 can be reused.

[0052] Specifically, see Figure 1 The track removal platform 60 includes a suspended basket 61 and a second connector 62. The suspended basket 61 is suspended below two adjacent curing platforms 51 through the second connector 62. The side of the suspended basket 61 away from the deformed concrete 2 extends outward, and the anti-buoyancy track 30 passes through the avoidance hole at the bottom of the suspended basket 61.

[0053] Because the anti-buoyancy track 30 passes through the clearance hole at the bottom of the suspended basket 61, the suspended basket 61 is not easy to shake, making it convenient for operation. Furthermore, the suspended basket 61 is suspended and installed below two adjacent maintenance platforms 51 through the second connector 62. The second connector 62 can be four metal rods or two trusses. In this way, the connection between the two adjacent maintenance platforms 51 through the suspended basket 61 further enhances the stability of the maintenance platform 51, making it less prone to shaking and facilitating the operation of workers on the maintenance platform 51.

[0054] Example 5: The present invention also proposes a method of using the sliding template system described in Embodiment 4, comprising the following steps: During the pouring of modified concrete 2, multiple sets of support rod groups 10 are pre-embedded at intervals along the length of the dam within the modified concrete 2. After the modified concrete 2 is poured to a certain height, the tie bars 41 and butt nuts 42 are pre-embedded in layers in the modified concrete 2; the lifting formwork 20 is installed on the support rod group 10, the lifting jack 22 passes through the support rod 11 in the support rod group 10, and the formwork unit abuts against the outside of the modified concrete 2. As the lifting formwork 20 is lifted, an auxiliary platform 50 is installed at the bottom of the formwork unit; personnel stand on the curing platform 51 to repair quality defects of the deformed concrete 2 after demolding, treat the embedded parts, and spray water to cure the deformed concrete 2. After the concrete has been poured to a certain height, multiple suspended baskets 61 are placed in the predetermined positions; then, connecting rods 43 are installed through connecting nuts 42, and track units for fixing anti-buoyancy rails 30 are installed through connecting rods 43. The track units pass through the clearance holes at the bottom of the suspended baskets 61, and the suspended baskets 61 are suspended and installed below two adjacent curing platforms 51 through the second connectors 62; the top of the anti-buoyancy rails 30 is connected to the corresponding support rod group 10 through the slide 31. As the lifting formwork 20 is further lifted, the lower connecting rod 43 and track unit are removed via the suspended platform 61. The connecting rod 43 and track unit are then transferred to the working platform 25 via the maintenance platform 51, so that the connecting rod 43 and track unit can be used in a cycle from bottom to top. When disassembly begins, the bottom block of the track unit is removed.

[0055] It should be noted that, in order to facilitate the movement of personnel on the work platform 25, the maintenance platform 51 and the suspended platform 61, stairs can be installed between the work platform 25, the maintenance platform 51 and the suspended platform 61.

[0056] Because the roller-compacted concrete 1 (RCC concrete) has a slow compaction speed, while the modified concrete 2 has a faster initial setting time, it takes a relatively long time from the first layer of modified concrete 2 being poured into the formwork 23 until the concrete fills the formwork 23. Therefore, in order to ensure that the formwork 23 does not stick, every few hours, the lifting formwork 20 must slide up 1-2 strokes to ensure that the formwork 23 does not stick. The interval mainly depends on the initial setting time of the concrete.

[0057] The initial slipforming should be carried out slowly. During this process, a comprehensive system inspection should be conducted on the hydraulic system, lifting formwork 20, support reinforcement, and related facilities under load. Any problems found should be addressed promptly, and normal slipforming can only proceed after everything is normal. When transitioning to normal slipforming, continuous operation should be maintained as much as possible. A designated person should observe the surface quality of the demolded concrete to determine the appropriate slipforming time and speed. This needs to be determined through comprehensive testing over a certain period of time, taking into account factors such as the compaction speed of the roller-compacted concrete 1, the characteristics of the modified concrete 1, the feed strength, the ambient temperature, and the demolding strength.

[0058] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims. 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 sliding formwork system for roller-compacted concrete in dams, characterized in that, It includes multiple sets of support rods (10) for pre-embedded installation into the modified concrete (2), a lifting formwork (20) for installation onto the support rods (10), and an auxiliary platform (50) for installation onto the underside of the lifting formwork (20). The support rod assembly (10) includes at least one support rod (11). The lifting frame (20) includes a lifting frame (21) and a mold unit. A lifting jack (22) is installed at one end of the lifting frame (21). The lifting jack (22) is used to be fitted onto the support rod (11). A mold unit for molding modified concrete (2) is installed at the other end of the lifting frame (21). A working platform (25) is formed on the top of the mold unit. The auxiliary platform (50) includes a curing platform (51) for repairing and curing the modified concrete (2), which is suspended from the bottom of the formwork unit by a first connector (52).

2. The sliding formwork system for roller-compacted concrete in dams according to claim 1, characterized in that: The module unit includes a template (23) and a truss (24). The truss (24) is fixedly connected to the lifting frame (21). The template (23) is fixedly connected to the truss (24) and the template (23) is located on one side of the modified concrete (2) for forming with the modified concrete (2).

3. The sliding formwork system for roller-compacted concrete in dams according to claim 2, characterized in that: The remaining sides of the truss (24) are respectively enclosed by plates to form a water tank structure; the water tank structure is provided with inlet and outlet pipes, and valves are installed on the inlet and outlet pipes respectively.

4. A sliding formwork system for roller-compacted concrete in dams according to claim 3, characterized in that: The maintenance platform (51) is equipped with a water spraying device (53). The water spraying device (53) is connected to the water outlet pipe on the water tank structure through a pipe so as to use the water in the water tank structure as a water source to spray water on the deformed concrete (2) in a timely manner.

5. A sliding formwork system for roller-compacted concrete in dams according to claim 1, characterized in that: The support rod group (10) includes three support rods (11), which are arranged in a triangle. Each support rod (11) is equipped with a lifting jack (22). Reinforcing ribs (12) are provided between the three support rods (11) and on the lower side of the lifting frame (21).

6. A sliding formwork system for roller-compacted concrete in dams according to claim 1, characterized in that: The lifting frame (21) includes a transverse frame (211) and a longitudinal frame (212). The lifting jack (22) is installed on the transverse frame (211), and the longitudinal frame (212) is fixed to one end of the transverse frame (211). Each longitudinal frame (212) is installed and fixed to the mold unit.

7. A sliding formwork system for roller-compacted concrete in dams according to claim 1, characterized in that: It also includes multiple anti-buoyancy rails (30), which are spaced apart on the outside of the mold unit, and the mold unit is slidably connected to the anti-buoyancy rails (30); The anti-buoyancy track (30) is connected and supported to the modified concrete (2) via multiple sets of tie devices (40) on the lower side of the truss (24); or it is simultaneously connected and supported to the roller-compacted concrete (1) and the modified concrete (2). The maintenance platform (51) is provided in multiple ways, and the tie device (40) is located between two adjacent maintenance platforms (51).

8. A sliding formwork system for roller-compacted concrete in dams according to claim 7, characterized in that: The tie device (40) includes a tie bar (41), a connecting nut (42), and a connecting rod (43). One end of the tie bar (41) is fixed to the connecting nut (42). The tie bar (41) is embedded in the modified concrete (2) or in the roller-compacted concrete (1) and the modified concrete (2). The connecting nut (42) is embedded on one side of the end face of the modified concrete (2). One end of the connecting rod (43) is screwed to the connecting nut (42) and the other end is connected to the anti-buoyancy track (30) to fix the anti-buoyancy track (30). The top of the anti-buoyancy track (30) is connected to the corresponding support rod group (10) through the slide (31).

9. A sliding formwork system for roller-compacted concrete in dams according to claim 8, characterized in that: Each layer of the tie device (40) includes two tie rods (41) and two connecting rods (43) set on both sides of the anti-buoyancy track (30). The two connecting rods (43) are respectively equipped with limiting plates (45) for clamping the anti-buoyancy track (30) on the left and right sides of the anti-buoyancy track (30) by limiting nuts (44).

10. A sliding formwork system for roller-compacted concrete in dams according to claim 7, characterized in that: The anti-buoyancy track (30) is formed by the docking and installation of multiple track units.

11. A sliding formwork system for roller-compacted concrete in dams according to claim 10, characterized in that: The maintenance platform (51) is also equipped with a track removal platform (60); the track removal platform (60) includes a basket (61) and a second connector (62). The basket (61) is suspended below two adjacent maintenance platforms (51) through the second connector (62). The side of the basket (61) away from the deformed concrete (2) extends outward, and the anti-buoyancy track (30) passes through the avoidance hole at the bottom of the basket (61).

12. A method of using the sliding template system of claim 11, characterized in that: Includes the following steps: When pouring the modified concrete (2), multiple sets of support rod groups (10) are pre-embedded at intervals along the length of the dam in the modified concrete (2). After the modified concrete (2) is poured to a certain height, the tie bars (41) and butt nuts (42) are pre-embedded in layers in the modified concrete (2); the lifting formwork (20) is installed on the support rod group (10), the lifting jack (22) passes through the support rod (11) in the support rod group (10), and the formwork unit abuts against the outside of the modified concrete (2); As the lifting frame (20) is lifted, an auxiliary platform (50) is installed at the bottom of the mold unit; personnel stand on the curing platform (51) to repair the quality defects of the deformed concrete (2) after demolding, treat the embedded parts, and spray water to cure the deformed concrete (2); After the concrete is poured to a certain height, multiple baskets (61) are placed in the predetermined positions; then the connecting rod (43) is installed by the connecting nut (42), and the track unit of the anti-buoyancy track (30) is installed by the connecting rod (43). The track unit passes through the clearance hole at the bottom of the basket (61), and the basket (61) is suspended and installed below two adjacent maintenance platforms (51) by the second connector (62); the top of the anti-buoyancy track (30) is connected to the corresponding support rod group (10) by the slide (31). As the lifting frame (20) is further lifted, the connecting rod (43) and track unit on the lower side are removed through the basket (61). The connecting rod (43) and track unit are transferred to the working platform (25) via the maintenance platform (51) so that the connecting rod (43) and track unit can be used in a cycle from bottom to top.

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