Joint grouting construction equipment and process for arch dam transverse joint and folding joint grouting area

Abstract

The invention provides joint grouting construction equipment and technology for an arch dam transverse joint folding joint grouting district, and relates to the technical field of grouting.The joint grouting construction equipment comprises a grouting pipe, one end of the grouting pipe is connected with a mounting block, a grout outlet channel is formed in the mounting block in a penetrating mode, the grouting pipe communicates with the grout outlet channel, and movable grooves are formed in the inner walls of the two sides of the grout outlet channel correspondingly; and a fan-shaped valve plate is rotationally mounted in the movable groove. According to the joint grouting construction equipment and process for the transverse joint and folding joint grouting area of the arch dam, through the arrangement of the grouting pipe, the mounting block, the fan-shaped valve plate, the flushing pipe, the blocking mechanism, the positioning mechanism and the reset mechanism, after grouting is completed, the fan-shaped valve plate can be fixed, and the crack of the fan-shaped valve plate is flushed; the problems of blockage and the like caused by the fact that cracks of the fan-shaped valve plate cannot be washed clean are solved, the situation that the fan-shaped valve plate is flushed open by washing water can be reduced during washing, and the situation that water enters a grouting area to affect the grouting quality is reduced.

Description

Technical Field

[0001] This invention relates to the field of grouting equipment technology, and in particular to a joint grouting construction equipment and process for the transverse joint folding joint grouting area of ​​an arch dam. Background Technology

[0002] In the field of water conservancy and hydropower engineering construction, arch dams, as an important dam type, are widely used globally due to their excellent structural performance and economic efficiency. During the construction of arch dams, transverse joints are typically required to accommodate temperature changes and concrete shrinkage. The grouting area within these transverse joints is a crucial component ensuring the integrity and stability of the arch dam, and the quality of its grouting directly affects the dam's load-bearing capacity and seepage prevention performance. Regarding the grouting construction of the folded joint area in arch dam transverse joints, the complex, zigzag structure and spatial shape of the grouting area make it prone to creating dead zones for the grout flow at the folds, potentially leading to incomplete filling in localized areas, forming pores or voids. Traditional grouting equipment struggles to accurately adapt to the folded joint direction, easily resulting in uneven grout distribution. This can lead to cracks due to stress concentration during later operation, requiring secondary grouting. Therefore, it is usually necessary to pre-embed reusable grouting pipes, which typically utilize one-way valves. For example, with duckbill valves, after grouting is completed, a vacuum tube is used to extract the grout from the grouting pipe, and then the grouting pipe is flushed. However, in reality, when extracting the grout and flushing the grouting pipe, the duckbill valve may be opened by the impact force of the water, causing the flushing fluid to enter the grouting area of ​​the fold, resulting in the grout being diluted and affecting the grouting quality of the fold. In addition, when the duckbill valve is not flushed open by water pressure, the flushing process inside the duckbill valve may be a dead corner of the flushing, and there will be grout residue. When the grout solidifies, it may affect the secondary grouting. Summary of the Invention

[0003] Based on the technical problems existing in the background art, the present invention proposes a joint grouting construction equipment and process for the transverse joint folded joint grouting area of ​​an arch dam.

[0004] This invention proposes a joint grouting construction device for the transverse joint and folded joint grouting area of ​​an arch dam, including a grouting pipe. One end of the grouting pipe is connected to an installation block. A grout outlet channel is formed through the installation block. The grouting pipe is connected to the grout outlet channel. Movable grooves are formed on both sides of the inner wall of the grout outlet channel. A fan-shaped valve plate is rotatably installed in the movable groove. The fan-shaped valve plate can block the connection between the movable groove and the grout outlet channel. When two fan-shaped valve plates abut together, they can block the grout outlet channel. A flushing pipe is installed on the mounting block; a flushing port communicating with the flushing pipe is opened on the mounting block, and a sealing mechanism is installed inside the flushing pipe, which can seal the flushing port; The sealing mechanism can also guide water to flush the gap between the two sector valve plates; The flushing pipe is also equipped with a positioning mechanism, which can also fix the position of the sector valve plate in the slurry outlet channel; A reset mechanism is installed in the movable slot, which is used to drive the sector valve plate to rotate and reset.

[0005] Preferably, the cross-section of the sector valve plate is sector-shaped, and the sector valve plate is rotatably installed in the mounting block via a rotating shaft. The rotating shaft of the sector valve plate coincides with the axis of the sector valve plate, and the sector valve plate always blocks the opening connecting the movable groove and the slurry outlet channel.

[0006] Preferably, the sealing mechanism includes a sealing plug and a lifting assembly; the sealing plug is slidably installed inside the flushing port; The lifting assembly is used to drive the sealing plug to slide up and reset.

[0007] Preferably, the lifting assembly includes a cross, a limiting rod, a lifting frame, and a return spring; the cross is fixedly installed inside the flushing pipe, one end of the limiting rod slides through the cross, the other end of the limiting rod is fixedly connected to the lifting frame, the lifting frame is fixedly connected to the sealing plug, the return spring is fitted on the limiting rod, and both ends of the return spring are respectively connected to the cross and the lifting frame, and the return spring is always in a stretched state; The limiting rod is circumferentially connected to a boss, which can abut against the bottom surface of the cross.

[0008] Preferably, the top of the sealing plug is provided with a sloping water outlet groove.

[0009] Preferably, the positioning mechanism includes two positioning pins; both positioning pins are fixedly connected to the lifting frame, the bottom end of the positioning pin slides through the top of the mounting block, and the sector valve plate is provided with positioning holes that are compatible with the positioning pins.

[0010] Preferably, the reset mechanism includes a first rod and a second rod; one end of the first rod is rotatably mounted on one side of the sector valve plate, and the other end of the first rod is rotatably connected to the second rod via a rotating shaft. A torsion spring is fitted on the rotating shaft of the first rod, and one end of the second rod is rotatably connected to the inner wall of the movable groove.

[0011] Preferably, a vibrating rod is installed through both sides of the mounting block, and one end of the vibrating rod extends into the movable groove; When the sector valve plate rotates to open the slurry outlet channel, the sector valve plate can impact the end of the vibrating rod and cause the vibrating rod to vibrate.

[0012] Preferably, an elastic lever is fixedly connected to the outer periphery of a section of the vibrating rod located within the movable groove; When rod number two rotates, the end of rod number two away from the inner wall of the movable groove can move the elastic lever and cause the elastic lever to vibrate.

[0013] A joint grouting process for transverse and folded joint areas of an arch dam, the grouting process flow is as follows: Step 1: Use a high-pressure air gun to remove scum, oil and impurities from the folded surface, and then rinse the folded area with clean water until the water runs clear. Step 2: According to the design plan, pre-embed the grouting pipe, install the block and flushing pipe, and install the vibrating frame at the end of the vibrating rod located outside the movable groove; Step 3: Install pressure testing pipes at the corners of the folds to monitor the grouting pressure in real time; Step 4: Pass clean water at 0.3-0.5 MPa into the flushing pipe and grouting pipe in sequence, flush each pipe and check the water flow. The flushing time is 20 minutes. Step 5: Inject grout into the joint area through the grouting pipe using a grouting pump; Step 6: When the grouting pressure reaches the design value and the grout intake drops to 1L / min or below, maintain this pressure for grout shielding for no less than 30 minutes. If there is no significant pressure drop during the grout shielding process, turn off the grouting pump and all valves to seal the grout for no less than 12 hours to allow the grout to fully solidify and ensure the grouting effect. Step 7: Pump water into the flushing pipe using a water pump. The flushing water is then discharged through the grouting pipe to complete the flushing of the grouting pipe. The flushing process continues for 10 minutes until the flushing return water becomes clear.

[0014] The joint grouting construction equipment and process proposed in this invention for the transverse joint folding joint grouting area of ​​an arch dam has the following beneficial effects: Through the setting of grouting pipe, mounting block, sector valve plate, flushing pipe, sealing mechanism, positioning mechanism and resetting mechanism, after grouting is completed, the sector valve plate can be fixed and the gap of the sector valve plate can be flushed, reducing the blockage caused by the gap of the sector valve plate not being flushed clean. During flushing, the situation where the sector valve plate is washed open by the flushing water can also be reduced, reducing the amount of water entering the grouting area and affecting the quality of grouting. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a joint grouting construction device for the transverse joint folded joint grouting area of ​​an arch dam, as proposed in this invention. Figure 2 This is a cross-sectional view of the joint grouting construction equipment for the transverse joint folded joint grouting area of ​​an arch dam, as proposed in this invention. Figure 3 This is a side sectional view of a joint grouting construction device for the transverse joint folded joint grouting area of ​​an arch dam, as proposed in this invention. Figure 4This is a schematic diagram showing the position of the fan-shaped valve plate when viewed from below, for a joint grouting construction device for the transverse joint folded joint grouting area of ​​an arch dam proposed in this invention. Figure 5 This is a cross-sectional view of the fan-shaped valve plate when closed, viewed from below, in a joint grouting construction device for the transverse joint folded joint grouting area of ​​an arch dam, as proposed in this invention. Figure 6 This is a schematic diagram of the fan-shaped valve plate in the joint grouting construction equipment for the transverse joint folded joint grouting area of ​​an arch dam proposed in this invention; Figure 7 This is a schematic diagram of the sealing mechanism in the joint grouting construction equipment for the transverse joint folded joint grouting area of ​​an arch dam proposed in this invention; Figure 8 This is a schematic diagram of the sealing blockage structure in the joint grouting construction equipment for the transverse joint folded joint grouting area of ​​an arch dam proposed in this invention; Figure 9 This is a schematic diagram of the structure of the vibrating rod, the ring frame, and the supporting elastic strip in the joint grouting construction equipment for the transverse joint folded joint grouting area of ​​the arch dam proposed in this invention.

[0016] In the diagram: 1. Grouting pipe; 2. Mounting block; 3. Grout outlet channel; 4. Movable groove; 5. Fan-shaped valve plate; 6. Flushing pipe; 7. Sealing plug; 8. Cross; 9. Limiting rod; 10. Lifting frame; 11. Return spring; 12. Inclined water outlet groove; 13. Positioning pin; 14. Positioning hole; 15. Rod No. 1; 16. Rod No. 2; 17. Vibrating rod; 18. Elastic lever; 19. Thin metal layer; 20. Support spring bar; 21. Ring frame. Detailed Implementation

[0017] Reference Figures 1-9This invention proposes a grouting construction device for the joint grouting area of ​​the transverse joint of an arch dam, including a grouting pipe 1. One end of the grouting pipe 1 is connected to an installation block 2. A grout outlet channel 3 is opened through the installation block 2, and the grouting pipe 1 is connected to the grout outlet channel 3. Movable grooves 4 are opened on both sides of the inner wall of the grout outlet channel 3. A sector-shaped valve plate 5 is rotatably installed in the movable groove 4. The sector-shaped valve plate 5 can block the connection between the movable groove 4 and the grout outlet channel 3. When the two sector-shaped valve plates 5 abut together, they can block the grout outlet channel 3. When grouting the transverse joint grouting area of ​​the arch dam, the grouting pipe 1 and the installation block 2 are pre-embedded to ensure that the grout outlet channel 3 in the grouting pipe 1 and the installation block 2 are connected. The grout is pumped by a grouting pump through the grouting pipe 1 and into the grout outlet channel 3. Under the impact force of the grout, the two sector-shaped valve plates 5 rotate and open. The cross-section of the sector-shaped valve plate 5 is sector-shaped. The sector-shaped valve plate 5 is rotatably installed in the installation block 2 by a rotating shaft. The axis of rotation of 5 coincides with the axis of the sector valve plate 5. The inner wall of the sliding fit between the movable groove 4 and the sector valve plate 5 is arc-shaped. The axis of this arc segment coincides with the axis of rotation of the sector valve plate 5, thereby ensuring that the sector valve plate 5 always blocks the opening between the movable groove 4 and the slurry outlet channel 3. In addition, the sector valve plate 5 and the movable groove 4 are sealed (e.g., density pads, sealing rings, etc., existing technologies) to ensure that the slurry does not enter the movable groove 4, so that the movable groove 4 is always in a relatively closed state. A reset mechanism is installed in the movable groove 4. The reset mechanism is used to drive the sector valve plate 5 to rotate and reset. After the grouting is completed, the reset mechanism drives the two sector valve plates 5 to rotate and reset and block the slurry outlet channel 3 to prevent the slurry from flowing back. Due to the setting of the sector valve plate 5 and the movable groove 4, the movement of the sector valve plate 5 is ensured, reducing the impact of external slurry on the sector valve plate 5 and preventing it from opening normally. A flushing pipe 6 is installed on the mounting block 2.The mounting block 2 has a flushing port connected to the flushing pipe 6. A sealing mechanism is installed inside the flushing pipe 6 to seal the flushing port. After grouting, the flushing pipe 6 cleans the grout outlet channel 3 and the grouting pipe 1, ensuring unobstructed flow in both, facilitating subsequent grouting. Traditional duckbill valves require controlled water pressure during cleaning to prevent them from opening. While they can clean the grouting pipe 1, the water cannot reach the gaps in the duckbill valve, affecting the flushing effect and potentially causing grout residue. After solidification, this residue may affect the opening of the duckbill valve or cause blockage. Therefore, the following design is implemented: sealing... The mechanism can also guide water to flush the gap between the two sector valve plates 5. The sealing mechanism guides the water to flush the gap between the two sector valve plates 5, facilitating the cleaning of the slurry in the gap and reducing slurry residue. During the flushing process, to prevent the two sector valve plates 5 from being washed open by the water, a positioning mechanism is specifically designed. This positioning mechanism can also fix the position of the sector valve plates 5 within the slurry outlet channel 3. When flushing the gap between the two sector valve plates 5, the positioning mechanism fixes the position of the two sector valve plates 5, preventing them from opening during the flushing process and reducing the amount of water entering the grouting area.

[0018] like Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8 As shown, the sealing mechanism includes a sealing plug 7 and a lifting assembly. The sealing plug 7 is slidably installed inside the flushing port. The lifting assembly is used to drive the sealing plug 7 to slide up and reset. The lifting assembly includes a cross 8, a limiting rod 9, a lifting frame 10, and a return spring 11. The cross 8 is fixedly installed inside the flushing pipe 6. One end of the limiting rod 9 slides through the cross 8, and the other end of the limiting rod 9 is fixedly connected to the lifting frame 10. The lifting frame 10 is fixedly connected to the sealing plug 7. The return spring 11 is fitted onto the limiting rod 9. Both ends of the return spring 11 are connected to the cross 8 and the lifting frame 10, respectively. The return spring 11 is always in a stretched state. A boss is circumferentially connected to the outer periphery of the limiting rod 9. It can rest against the bottom surface of the cross 8. In actual use, the tension of the return spring 11 pulls the lifting frame 10 and the sealing plug 7 to rise synchronously. At this time, the sealing plug 7 blocks the flushing port. When the lifting frame 10 rises, it will drive the limit rod 9 to rise synchronously. When the limit rod 9 rises, the protrusion on the outer periphery of the limit rod 9 abuts against the cross 8, so that the sealing plug 7 cannot continue to rise and is blocked in the flushing port. When flushing water is injected into the flushing pipe 6, under the action of water pressure, the sealing plug 7 is pushed down and the flushing port is opened. The flushing water enters the grout outlet channel 3 and the grouting pipe 1 for flushing. The flushing water is discharged through the grouting pipe 1 to complete the flushing. Its structure is simple and the operation is convenient.

[0019] like Figure 3 , Figure 7 and Figure 8 As shown, the top of the sealing plug 7 is provided with a sloping water outlet groove 12. When flushing the grouting pipe 1, the flushing water is guided by the sloping surface of the sloping water outlet groove 12 to flush the gap between the two fan-shaped valve plates 5, thereby reducing the occurrence of flushing dead corners, making the flushing effect better, and reducing the grout residue in the gap of the duckbill valve.

[0020] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the positioning mechanism includes two positioning pins 13; both positioning pins 13 are fixedly connected to the lifting frame 10. The bottom end of the positioning pin 13 slides through the top of the mounting block 2. The sector valve plate 5 is provided with a positioning hole 14 that matches the positioning pin 13. During the grouting process, the bottom end of the positioning pin 13 is flush with the top inner wall of the grout outlet channel 3. When the grouting pipe 1 is flushed, the sealing plug 7 and the lifting frame 10 descend synchronously. When the lifting frame 10 descends, it will drive the positioning pin 13 to descend synchronously. The descending positioning pin 13 can be inserted into the top positioning hole 14 of the closed sector valve plate 5, thereby restricting the rotation of the sector valve plate 5. When subjected to water impact, it ensures the stability of the sector valve plate 5 and reduces the risk of the sector valve plate 5 being flushed open, causing water to enter the grouting area and affecting the grouting quality in the folded joint grouting area.

[0021] like Figure 4 and Figure 5 As shown, the reset mechanism includes a first rod 15 and a second rod 16. One end of the first rod 15 is rotatably mounted on one side of the sector valve plate 5, and the other end of the first rod 15 is rotatably connected to the second rod 16 via a rotating shaft. A torsion spring is fitted on the rotating shaft of the first rod 15. One end of the second rod 16 is rotatably connected to the inner wall of the movable groove 4. When the sector valve plate 5 opens the slurry outlet channel 3, the sector valve plate 5 rotates into the movable groove 4, making the included angle between the first rod 15 and the second rod 16 smaller, and twisting the torsion spring. When the sector valve plate 5 is not subjected to the impact force of the slurry, under the rebound action of the torsion spring, the included angle between the first rod 15 and the second rod 16 increases and pushes the sector valve plate 5 to rotate into the slurry outlet channel 3. When the two sector valve plates 5 abut against each other, they block the slurry outlet channel 3.

[0022] like Figure 4 and Figure 5As shown, vibrating rods 17 are installed through both sides of the mounting block 2. One end of the vibrating rod 17 extends into the movable groove 4, and the other end of the vibrating rod 17 outside the movable groove 4 is fixedly connected to the vibrating frame. The vibrating frame is designed according to the situation of the grouting area. When the fan-shaped valve plate 5 rotates to open the grout outlet channel 3, the fan-shaped valve plate 5 can hit the end of the vibrating rod 17 and cause the vibrating rod 17 to vibrate. During the grouting operation, by changing the grouting speed, the impact force of the grout on the fan-shaped valve plate 5 is changed, and the rotation angle of the fan-shaped valve plate 5 is changed, so that the fan-shaped valve plate 5 hits the end of the vibrating rod 17 at intervals and drives the vibrating frame to vibrate synchronously. After the grout enters the grouting area, the vibration of the vibrating frame can make the grout fill the grouting area better and more evenly, resulting in a better filling effect.

[0023] like Figure 4 and Figure 5 As shown, an elastic lever 18 is fixedly connected to the outer periphery of a section of the vibrating rod 17 located in the movable groove 4. When the second rod 16 rotates, the end of the second rod 16 away from the inner wall of the movable groove 4 can move the elastic lever 18 and cause the elastic lever 18 to vibrate. When the fan-shaped valve plate 5 swings and rotates, it will drive the second rod 16 to swing and rotate accordingly. When the second rod 16 swings and rotates, the end of the second rod 16 will move the elastic lever 18 to vibrate. The elastic lever 18 drives the vibrating rod 17 and the vibrating frame to vibrate, thereby facilitating the injection of grout and the uniform filling of grout. In actual practice, the connection between the vibrating rod 17 and the side wall of the mounting block 2 is ground thin to a thin layer of metal 19 to facilitate the vibration of the vibrating rod 17. In addition, the position of the vibrating rod 17 is stabilized by the ring frame 21 and the support spring 20. During vibration, the support spring 20 undergoes elastic deformation. The ring frame 21 is fixedly installed on the inner wall of the movable groove 4.

[0024] The grouting process for the joints in the transverse and folded joint areas of arch dams is as follows: Step 1: Use a high-pressure air gun to remove scum, oil and impurities from the folded surface, and then rinse the folded area with clean water until the water runs clear. Step 2: According to the design plan, pre-embed grouting pipe 1, mounting block 2 and flushing pipe 6, and install a vibrating frame at the end of vibrating rod 17 located outside the movable groove 4; Step 3: Install pressure testing pipes at the corners of the folds to monitor the grouting pressure in real time; Step 4: Pass clean water at 0.3-0.5MPa into the flushing pipe 6 and the grouting pipe 1 in sequence, flush each pipe and check the water flow. The flushing time is 20 minutes. Step 5: The grout is injected into the joint area through the grouting pipe 1 by the grouting pump. During the grouting process, the grouting flow rate is adjusted. The change in grouting flow rate usually changes the opening and closing state of the sector valve plate 5. The rotation of the sector valve plate 5 drives the first rod 15 to rotate. The first rod 15 drives the second rod 16 to swing. At the same time, when the sector valve plate 5 is opened to near its maximum state, it will hit the end of the vibrating rod 17 and generate vibration. Step 6: When the grouting pressure reaches the design value and the grout intake drops to 1L / min or below, maintain this pressure for grout shielding for no less than 30 minutes. If there is no significant pressure drop during the grout shielding process, turn off the grouting pump and all valves to seal the grout for no less than 12 hours to allow the grout to fully solidify and ensure the grouting effect. Step 7: Pump water into flushing pipe 6 using a water pump. The flushing water is then discharged through grouting pipe 1 to complete the flushing of grouting pipe 1. The flushing process ends after 10 minutes, when the flushing return water becomes clear.

[0025] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A joint grouting construction device for the transverse joint and folded joint grouting area of ​​an arch dam, characterized in that, The system includes a grouting pipe (1), one end of which is connected to an installation block (2). A grout outlet channel (3) is provided through the installation block (2). The grouting pipe (1) is connected to the grout outlet channel (3). Movable grooves (4) are provided on both sides of the inner wall of the grout outlet channel (3). A fan-shaped valve plate (5) is rotatably installed in the movable groove (4). The fan-shaped valve plate (5) can block the connection between the movable groove (4) and the grout outlet channel (3). When two fan-shaped valve plates (5) abut together, they can block the grout outlet channel (3). A flushing pipe (6) is installed on the mounting block (2); a flushing port communicating with the flushing pipe (6) is opened on the mounting block (2); a sealing mechanism is installed inside the flushing pipe (6); the sealing mechanism can seal the flushing port. The sealing mechanism can also guide water to flush the gap between the two sector valve plates (5); The flushing pipe (6) is also provided with a positioning mechanism, which can also fix the position of the sector valve plate (5) in the slurry outlet channel (3); A reset mechanism is installed in the movable groove (4), which is used to drive the sector valve plate (5) to rotate and reset.

2. The joint grouting construction equipment for the transverse joint folding joint grouting area of ​​an arch dam according to claim 1, characterized in that, The cross-section of the sector valve plate (5) is sector-shaped. The sector valve plate (5) is rotatably installed in the mounting block (2) via a rotating shaft. The rotating shaft of the sector valve plate (5) coincides with the axis of the sector valve plate (5). The sector valve plate (5) always blocks the opening connecting the movable groove (4) and the slurry outlet channel (3).

3. The joint grouting construction equipment for the transverse joint folding joint grouting area of ​​an arch dam according to claim 1, characterized in that, The sealing mechanism includes a sealing plug (7) and a lifting assembly; the sealing plug (7) is slidably installed inside the flushing port; The lifting assembly is used to drive the sealing plug (7) to slide up and reset.

4. The joint grouting construction equipment for the transverse joint folding joint grouting area of ​​an arch dam according to claim 3, characterized in that, The lifting assembly includes a cross (8), a limiting rod (9), a lifting frame (10), and a return spring (11); the cross (8) is fixedly installed inside the flushing pipe (6), one end of the limiting rod (9) slides through the cross (8), the other end of the limiting rod (9) is fixedly connected to the lifting frame (10), the lifting frame (10) is fixedly connected to the sealing plug (7), the return spring (11) is fitted on the limiting rod (9), the two ends of the return spring (11) are respectively connected to the cross (8) and the lifting frame (10), and the return spring (11) is always in a stretched state; The limiting rod (9) is circumferentially connected to a boss, which can abut against the bottom surface of the cross (8).

5. The joint grouting construction equipment for the transverse joint folding joint grouting area of ​​an arch dam according to claim 3, characterized in that, The top of the sealing plug (7) is provided with a sloping water outlet groove (12).

6. The joint grouting construction equipment for the transverse joint folding joint grouting area of ​​an arch dam according to claim 4, characterized in that, The positioning mechanism includes two positioning pins (13); both positioning pins (13) are fixedly connected to the lifting frame (10), and the bottom end of the positioning pin (13) slides through the top of the mounting block (2). The fan-shaped valve plate (5) is provided with positioning holes (14) that are compatible with the positioning pins (13).

7. The joint grouting construction equipment for the transverse joint and folded joint grouting area of ​​an arch dam according to claim 1, characterized in that, The reset mechanism includes a first rod (15) and a second rod (16); one end of the first rod (15) is rotatably mounted on one side of the sector valve plate (5), and the other end of the first rod (15) is rotatably connected to the second rod (16) through a rotating shaft. A torsion spring is fitted on the rotating shaft of the first rod (15), and one end of the second rod (16) is rotatably connected to the inner wall of the movable groove (4).

8. The joint grouting construction equipment for the transverse joint folding joint grouting area of ​​an arch dam according to claim 6, characterized in that, Vibration rods (17) are installed through both sides of the mounting block (2), and one end of the vibration rod (17) extends into the movable groove (4); When the sector valve plate (5) rotates to open the slurry outlet channel (3), the sector valve plate (5) can strike the end of the vibrating rod (17) and cause the vibrating rod (17) to vibrate.

9. The joint grouting construction equipment for the transverse joint folding joint grouting area of ​​an arch dam according to claim 8, characterized in that, The vibrating rod (17) has an elastic paddle (18) fixedly connected to the outer periphery of a section located in the movable groove (4). When the second rod (16) rotates, the end of the second rod (16) away from the inner wall of the movable groove (4) can move the elastic lever (18) and cause the elastic lever (18) to vibrate.

10. A joint grouting process for the transverse joint folded joint grouting area of ​​an arch dam, employing the joint grouting construction equipment for the transverse joint folded joint grouting area of ​​an arch dam as described in any one of claims 1-9, characterized in that, The grouting process is as follows: Step 1: Use a high-pressure air gun to remove scum, oil and impurities from the folded surface, and then rinse the folded area with clean water until the water runs clear. Step 2: According to the design plan, pre-embed the grouting pipe (1), the installation block (2) and the flushing pipe (6), and install the vibrating frame at the end of the vibrating rod (17) outside the movable groove (4); Step 3: Install pressure testing pipes at the corners of the folds to monitor the grouting pressure in real time; Step 4: Pass clean water at 0.3-0.5MPa into the flushing pipe (6) and the grouting pipe (1) in sequence, flush each pipe and check the water flow. The flushing time is 20 minutes. Step 5: Inject the grout into the joint area through the grouting pipe (1) using a grouting pump; Step 6: When the grouting pressure reaches the design value and the grout intake drops to 1L / min or below, maintain this pressure for grout shielding for no less than 30 minutes. If there is no significant pressure drop during the grout shielding process, turn off the grouting pump and all valves to seal the grout for no less than 12 hours to allow the grout to fully solidify and ensure the grouting effect. Step 7: Pump water into the flushing pipe (6) using a water pump. The flushing water is then discharged through the grouting pipe (1) to complete the flushing of the grouting pipe (1). The flushing water is cleared and the process ends after 10 minutes.

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