Arch dam crack processing mechanism and method

Abstract

The application discloses an arch dam crack processing mechanism and method, which comprises a bottom plate, a supporting plate and a placing plate. The bottom plate is provided with a supporting structure. The supporting structure is provided with the supporting plate. The supporting plate is provided with a jacking structure. The supporting plate is fixedly provided with a liquid storage tank. The liquid storage tank is connected with a liquid passing pipe through a liquid outlet. The liquid passing pipe is connected with a water pump and a liquid outlet head. The liquid outlet head is fixedly arranged on the placing plate. The arch dam crack processing mechanism and method can better fill the cracks at the high position of the dam by setting the supporting structure, driving the moving block to move on the supporting slide through pneumatic control, driving the first supporting rod and the second supporting rod, and lifting the supporting plate. The position height of the placing plate can be further improved through the jacking structure, so that the small cracks existing at the higher position of the dam can be accurately filled, and the dam hidden danger can be effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of arch dam crack repair equipment technology, specifically an arch dam crack treatment mechanism and method. Background Technology

[0002] Arch dams, being highly statically indeterminate spatial shell structures, are the core structure of high dam projects. They transmit water pressure to the rock masses on both banks via the arch body. However, due to factors such as temperature stress, concrete shrinkage, and foundation deformation, they are prone to penetrating or surface cracks, leading to leakage, structural strength reduction, and even dam failure risks. Therefore, crack treatment structures have become a key technology for ensuring the safety of arch dams. Arch dam repair falls into two categories: surface sealing and deep reinforcement. Surface sealing involves sealing crack openings with caulking materials (such as polysulfide sealant) and rigid covers to block water seepage. Deep reinforcement involves injecting chemical grout (epoxy resin, polyurethane grout) into the cracks. After the grout cures, it bonds to the crack surface, restoring the structural integrity. This is combined with prestressed anchors and bolts to offset tensile stress in the dam body and inhibit crack propagation. Combining these two technologies achieves the dual effect of "seepage sealing + reinforcement." Different methods require corresponding treatment agencies to fill and embed the appropriate materials into the cracks.

[0003] This case arose in order to resolve the aforementioned issues. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an arch dam crack treatment mechanism and method, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a mechanism and method for treating cracks in an arch dam, comprising a base plate, a support plate, and a placement plate. The base plate is provided with a support structure, the support structure is provided with a support plate, the support plate is provided with a lifting structure, a liquid storage tank is fixedly mounted on the support plate, the liquid storage tank outlet is connected to a liquid passage pipe, the liquid passage pipe is connected to a water pump and a liquid outlet head, and the liquid outlet head is fixedly mounted on the placement plate.

[0006] Preferably, the support structure includes a connecting block, a support slide, a support base plate, a moving block, a first support rod, and a second support rod. The connecting block and the support base plate are fixed on the base plate, and the connecting block and the support base plate are not on the same straight line and are arranged in a staggered manner.

[0007] Preferably, the bottom surface of the support plate is also fixed with a connecting block and a support base plate. The connecting block and the support base plate and the connecting block and the support base plate on the base plate are arranged in a mirror image of each other. A second support rod is rotatably connected to the connecting block. The other end of the second support rod is rotatably connected to a movable block. The movable block is slidably connected to a support slide rail provided on the bottom surface of the support plate.

[0008] Preferably, a support slide is vertically fixed on the support base plate provided on the base plate, and a movable block is slidably connected to each of the left and right sides of the support slide. The two movable blocks are fixedly connected by a horizontal column, and one end of the first support rod is rotatably connected to the horizontal column.

[0009] Preferably, the other end of the first support rod is rotatably connected to a connecting block fixed to the bottom surface of the support plate, and the first support rod and the second support rod are arranged alternately.

[0010] Preferably, the lifting structure includes a support column, a fixed plate, a rotating gear, a top plate, and a chain. The support column is fixed to the support plate, the side wall of the support column is fixed to the fixed plate, the side wall of the support column is also provided with a side slide rail, and the fixed plate is located outside the side slide rail.

[0011] Preferably, a top plate is slidably connected to the side slide rail, and a rotating gear is provided on the side wall of the top plate. There are two rotating gears, which are arranged in a straight line and connected by a chain drive.

[0012] After adopting the above technical solution, the present invention has the following advantages compared with the prior art: The present invention provides an arch dam crack treatment mechanism and method, which sets up a support structure and drives the moving block to move on the support slide through pneumatic control, thereby driving the first support rod and the second support rod to a certain position, thereby realizing the lifting of the support plate, which can better fill the cracks at the high point of the dam. With the jacking structure, the position height of the placement plate can be further increased, thereby accurately filling some small cracks at higher points of the dam and effectively reducing dam hazards. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the present invention; Figure 2 This is a frontal view of the present invention; Figure 3 This is a schematic diagram of the support structure of the present invention; Figure 4 This is a schematic diagram of the lifting structure of the present invention; Figure 5 This is a schematic diagram of the lifting structure of the present invention.

[0014] In the diagram: 1. Base plate; 2. Support plate; 3. Liquid storage tank; 4. Connecting block; 5. Liquid inlet pipe; 6. Placement plate; 7. Liquid outlet head; 8. Support slide; 9. Support base plate; 10. Moving block; 11. First support rod; 12. Support column; 13. Fixing plate; 14. Rotating gear; 15. Drive motor; 16. Top plate; 17. Chain; 18. Second support rod; 19. Connecting pipe; 20. Side slide rail; 21. Sliding block. Detailed Implementation

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0016] like Figure 1-5 The diagram illustrates a mechanism and method for treating cracks in an arch dam. It includes a base plate 1, a support plate 2, and a placement plate 6. The base plate 1 has a support structure, the support plate 2 is mounted on the support structure, and a lifting structure is installed on the support plate 2. A storage tank 3 is fixed to the support plate 2. A liquid outlet of the storage tank 3 is connected to a liquid pipe 5, which in turn connects to a water pump and a liquid outlet 7. The liquid outlet 7 is fixed to the placement plate 6. The storage tank 3 stores water and grout needed for repairing the cracks. The grout is sprayed from the liquid outlet 7 through the liquid pipe 5 under the action of the water pump, thus repairing the cracks in the arch dam. For cracks appearing on the arch dam, pressurized water should first be injected into the outlet. The cause of the water leakage should be determined by observing the inflow rate, pressure maintenance, and whether there is leakage on the dam surface and downstream foundation. Targeted repair measures should then be taken. The initial pressurized water pressure is 0.1 MPa. If the pressure can be maintained, it can be increased to 0.2 MPa for further observation. If it is confirmed that water is entering the cooling water pipe from the backfilled concrete foundation downstream of the dam, simply plug the pipe with micro-expansion cement grout. Alternatively, you can leave it untreated and continue to observe. If it is found that water is leaking into the pipe from cracks in the concrete dam surface, upstream dam surface repair and chemical grouting can be used to resolve the issue. When cracks at the arch dam require repair, chemical grouting can be used. The procedure involves chiseling a V-groove (4cm wide, 4cm deep) into the crack surface, installing a grouting pipe or grouting needle valve (inlet pipe + vent pipe; if there is seepage, a drainage pipe 22 should be installed for drainage), sealing the crack surface with epoxy resin, conducting a water pressure test, and then grouting. For the oblique crack at the upper right corner of the diversion tunnel, in addition to the above repair measures, to ensure grouting quality, two oblique grouting holes should be added on the side of the crack, 50cm (to prevent puncturing the grout stop plate) and 100cm from the outlet of the diversion tunnel. The holes should be 40cm deep (penetrating the crack), one for grouting and the other for venting. In addition, it is recommended that the reservoir water level be lowered to below 530.00m during grouting, and the maximum grouting pressure be 0.3MPa. To avoid the concrete at the joint end splitting due to the pressure during grouting, a stress relief hole with a diameter of about 5cm and a depth of 40-50cm can be drilled at the joint end. After drilling, the hole should be backfilled with epoxy mortar to seal it.

[0017] The support structure includes a connecting block 4, a support slide 8, a support base plate 9, a moving block 10, a first support rod 11, and a second support rod 18. The connecting block 4 and the support base plate 9 are fixed on the base plate 1. The connecting block 4 and the support base plate 9 are not on the same straight line and are staggered to prevent the first support rod 11 and the second support rod 18 from colliding with each other. The base plate 1 can be equipped with a device such as a drive cylinder to connect to the horizontal column in the middle of the moving block 10 to push the moving block 10 to move back and forth.

[0018] The working principle of the support structure is as follows: Under the drive of the cylinder, the moving block 10 slides on the support slide rail 8, thereby causing the position of the first support rod 11 to change. At this time, the connecting block 4, which is rotatably connected to the first support rod 11, causes the support plate 2 to rise or fall. As the support plate 2 moves, the second support rod 18 also rotates synchronously with the first support rod 11, improving the stability of the support plate 2.

[0019] A connecting block 4 and a supporting base plate 9 are also fixedly provided on the bottom surface of the supporting plate 2. The connecting block 4 and the supporting base plate 9 are arranged in a mirror image of each other as the connecting block 4 and the supporting base plate 9 provided on the base plate 1. A second supporting rod 18 is rotatably connected to the connecting block 4. The other end of the second supporting rod 18 is rotatably connected to the moving block 10. The moving block 10 is slidably connected in the supporting slide 8 provided on the bottom surface of the supporting plate 2. The two ends of the first supporting rod 11 and the second supporting rod 18 are respectively connected to a connecting block 4 and a moving block 10. The distance of the supporting slide 8 is the distance that the moving block 10 moves, thereby controlling the rotation angle of the first supporting rod 11.

[0020] A support slide 8 is vertically fixed on the support base plate 9 on the base plate 1. A movable block 10 is slidably connected to each of the left and right sides of the support slide 8. The two movable blocks 10 are fixedly connected by a horizontal column. One end of the first support rod 11 is rotatably connected to the horizontal column. The cross-section of the movable block 10 is "I" shaped, and the annular groove in the middle is engaged with the support slide 8 to realize the left and right sliding of the movable block 10 on it.

[0021] The other end of the first support rod 11 is rotatably connected to the connecting block 4 fixed to the bottom surface of the support plate 2, and the first support rod 11 and the second support rod 18 are arranged alternately.

[0022] The lifting structure includes a support column 12, a fixing plate 13, a rotating gear 14, a top plate 16, and a chain 17. The support column 12 is fixed on the support plate 2. The fixing plate 13 is fixed on the side wall of the support column 12. The side wall of the support column 12 is also provided with a side slide rail 20. The fixing plate 13 is located outside the side slide rail 20.

[0023] The working principle of the lifting structure is as follows: a section of the chain 17 is fixed at the fixed plate 13 to limit its movement. The drive motor 15 drives the rotating gear 14 to rotate, thereby driving the chain 17 to achieve multiplication of motion. This causes the sliding block 21 to slide along the side slide rail 20, thereby lifting the placement plate 6 and making the liquid outlet head 7 higher, which can adapt to cracks of different heights on the arch dam.

[0024] A top plate 16 is slidably connected to the side slide rail 20. A rotating gear 14 is provided on the side wall of the top plate 16. There are two rotating gears 14, which are arranged in a straight line and are connected by a chain 17.

[0025] The above-described embodiments are for illustrative purposes. Based on the above description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this utility model is not limited to the contents of the specification; its protection scope must be determined according to the claims.

Claims

1. A mechanism and method for treating cracks in an arch dam, comprising a base plate (1), a support plate (2), and a placement plate (6), characterized in that: The base plate (1) is provided with a support structure, the support structure is provided with a support plate (2), the support plate (2) is provided with a lifting structure, the support plate (2) is fixedly provided with a liquid storage tank (3), the liquid outlet of the liquid storage tank (3) is connected to a liquid passage pipe (5), the liquid passage pipe (5) is connected to a water pump and a liquid outlet head (7), and the liquid outlet head (7) is fixedly installed on the placement plate (6).

2. The arch dam crack treatment mechanism and method according to claim 1, characterized in that: The support structure includes a connecting block (4), a support slide (8), a support base plate (9), a moving block (10), a first support rod (11), and a second support rod (18). The connecting block (4) and the support base plate (9) are fixed on the base plate (1). The connecting block (4) and the support base plate (9) are not on the same straight line and are arranged in a staggered manner.

3. The arch dam crack treatment mechanism and method according to claim 2, characterized in that: The bottom surface of the support plate (2) is also fixed with a connecting block (4) and a support base plate (9). The connecting block (4) and the support base plate (9) and the connecting block (4) and the support base plate (9) on the base plate (1) are arranged in a mirror image of each other. A second support rod (18) is rotatably connected to the connecting block (4). The other end of the second support rod (18) is rotatably connected to the moving block (10). The moving block (10) is slidably connected in the support slide (8) on the bottom surface of the support plate (2).

4. The arch dam crack treatment mechanism and method according to claim 2, characterized in that: A support slide (8) is vertically fixed on the support base plate (9) provided on the base plate (1). A movable block (10) is slidably connected on the left and right sides of the support slide (8). The two movable blocks (10) are fixedly connected by a horizontal column. One end of the first support rod (11) is rotatably connected to the horizontal column.

5. The arch dam crack treatment mechanism and method according to claim 4, characterized in that: The other end of the first support rod (11) is rotatably connected to the connecting block (4) fixed on the bottom surface of the support plate (2), and the first support rod (11) and the second support rod (18) are arranged alternately.

6. The arch dam crack treatment mechanism and method according to claim 1, characterized in that: The lifting structure includes a support column (12), a fixing plate (13), a rotating gear (14), a top plate (16), and a chain (17). The support column (12) is fixed on the support plate (2). The side wall of the support column (12) is fixed with the fixing plate (13). The side wall of the support column (12) is also provided with a side slide rail (20). The fixing plate (13) is located outside the side slide rail (20).

7. The arch dam crack treatment mechanism and method according to claim 6, characterized in that: A top plate (16) is slidably connected to the side slide rail (20). A rotating gear (14) is provided on the side wall of the top plate (16). There are two rotating gears (14), which are arranged in a straight line and are connected by a chain (17).

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