Dam crack emergency water-stopping treatment device

Abstract

The utility model discloses a dam crack emergency water stop processing apparatus, concretely relates to the technical field of hydraulic engineering, including mobile base, the bottom of mobile base is provided with four self -lock universal wheel, support foot in rectangular array, the top of mobile base is provided with mobile handrail, the top of mobile base front side fixed mounting has the door type frame, the top rear side of mobile base is provided with mixing mechanism, and the mixing mechanism is located in the front side of mobile base, and the opposite surface between mixing mechanism and door type frame is provided with the conveying pump of fixed mounting in the top of mobile base, air pump. The utility model discloses a dam crack emergency water stop processing apparatus, through the crack gauge automatic scanning crack track, and control servo motor drive cleaning and perfusion instrument precision movement along the crack path, realize the automation operation of crack detection, cleaning and perfusion, greatly improve the processing efficiency and precision, reduce the manual intervention and error.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering technology, and in particular to an emergency water-stopping treatment device for dam cracks. Background Technology

[0002] As a crucial water conservancy infrastructure, dams are susceptible to various cracks during long-term operation due to factors such as hydraulic loads, temperature stress, geological settlement, and material aging. If these cracks are not addressed promptly, they can lead to increased seepage, exacerbated damage to the dam structure, and even dam failure, seriously threatening the safety of people and property. The existing technologies address the following issues: Existing dam crack treatment technologies rely heavily on manual inspection and operation, which is inefficient and makes it difficult to accurately track crack trajectories, resulting in incomplete cleaning and grouting, leaving potential leakage risks, and failing to meet the rapid response requirements for emergency water shut-off. At the same time, existing crack treatment devices have limited functions, requiring cleaning and grouting operations to be carried out in stages. The equipment is scattered and operation is cumbersome, lacking integration and automated control. In emergency situations, it is difficult to achieve rapid positioning and continuous operation, affecting the treatment effect and project safety. Utility Model Content

[0003] The main purpose of this utility model is to provide an emergency water-stopping treatment device for dam cracks, which can effectively solve the problems of reliance on manual labor, low efficiency, inaccurate positioning, and the inability to continuously and automatically carry out cleaning and grouting operations in the existing technology.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An emergency water-stopping device for dam cracks includes a movable base. The bottom of the movable base has four self-locking casters and support legs arranged in a rectangular array. A movable handrail is provided on the top of the movable base. A gantry frame is fixedly installed on the front side of the top of the movable base. A mixing mechanism is located on the rear side of the top of the movable base, positioned at the front. A delivery pump and an air pump are fixedly installed on the top of the movable base between the mixing mechanism and the opposite side of the gantry frame. A crack detector is fixedly installed at the horizontal front end of the gantry frame for scanning and detecting crack trajectories. A vertical device is located on the left side of the gantry frame. A lifting drive groove is provided on the right facade. A servo motor is fixedly installed on the top left side of the horizontal position of the portal frame. The output shaft of the servo motor passes through the inner cavity of the portal frame and is fixedly installed with a lifting screw. A lifting plate is threaded onto the outer wall of the lifting screw. A horizontal drive box is connected to the right side of the lifting plate. A portal plate is fixedly installed on the right side of the horizontal drive box. A sliding plate is fixedly installed on the right side of the portal plate. A left-right through limiting sliding groove is provided on the right vertical position of the portal frame. A limiting sliding rod is fixedly installed between the upper and lower sides of the inner wall of the limiting sliding groove. The sliding plate is slidably connected to the limiting sliding rod.

[0005] Preferably, a slit protection strip is provided on the right side of the inner cavity of the lifting drive groove. The slit protection strip has a vertical slit that runs through the left and right sides. A connecting plate is connected between the lifting plate and the horizontal drive box. The connecting plate is slidably connected to the vertical slit of the slit protection strip to protect the inner cavity of the lifting drive groove.

[0006] Preferably, a second servo motor is provided on the right side of the horizontal drive box. The second servo motor is located inside the portal plate. The output shaft of the portal plate passes through the inner cavity of the horizontal drive box and is fixedly installed with a horizontal lead screw. A horizontal moving plate is threaded onto the outer wall of the horizontal lead screw. A through groove is opened on the front side of the horizontal drive box, penetrating its inner cavity. A second slit protection strip is fixedly installed on the inner side of the through groove. The second slit protection strip has a transverse slit that runs through the front and back. A second connecting plate is fixedly connected to the front end of the horizontal moving plate. The front end of the second connecting plate passes through the transverse slit to the front side of the horizontal drive box and is fixedly installed with a mounting plate.

[0007] Preferably, a guide slide rod is fixedly installed between the left and right sides of the inner wall of the horizontal drive box, and the horizontal moving plate is slidably connected to the guide slide rod for limiting left and right movement.

[0008] Preferably, the mounting plate has a through hole running from front to back, and a high-pressure airflow cleaning gun is installed through the inner ring of the through hole. An airflow hose is fixedly connected to the rear end of the high-pressure airflow cleaning gun, and the other end of the airflow hose is fixedly connected to the output end of an air pump. Two left and right limiting extension plates are fixedly installed on the outer wall of the high-pressure airflow cleaning gun, and a plug rod is fixedly installed at the front end of each of the two limiting extension plates. Two left and right insertion holes are opened on the rear side of the mounting plate, and the two plug rods are respectively engaged with the two insertion holes. A magnetic ring is fixedly installed on the rear side of the mounting plate, and the inner ring of the magnetic ring runs through the through hole from front to back. The limiting extension plates and the magnetic ring are mutually attracted and positioned.

[0009] Preferably, semi-circular retaining rings are fixedly installed on the rear sides of the two vertical sections of the gantry frame, a material conveying hose is fixedly connected to the output end of the conveying pump, and a crack injection nozzle is fixedly connected to the other end of the material conveying hose. The outer wall of the crack injection nozzle has the same structure as the outer wall of the high-pressure airflow cleaning gun, and the crack injection nozzle is temporarily placed in the inner ring of one of the two semi-circular retaining rings.

[0010] Preferably, the mixing mechanism includes a storage tank, the input end of the delivery pump extends to the bottom of the inner cavity of the storage tank, a stirring motor is fixedly installed at the center of the top of the storage tank, the output shaft of the stirring motor extends to the inner cavity of the storage tank, and a number of vertically distributed stirring rods are fixedly installed in a ring array on the outer wall.

[0011] Preferably, a feeding threaded pipe is fixedly connected to the eccentric part of the top of the storage tank, penetrating its inner cavity. A threaded cap is threadedly installed on the top of the feeding threaded pipe. A drain pipe is fixedly connected to the lower rear end of the storage tank, penetrating the bottom of its inner cavity. A butterfly valve is provided on the outer wall of the drain pipe for sealing or opening the drain pipe.

[0012] Preferably, the signal output terminal of the crack instrument is electrically connected to the signal input terminals of servo motor two and servo motor one.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model provides an emergency water-stopping treatment device for dam cracks. It automatically scans the crack trajectory through a crack detector and controls a servo motor to drive the cleaning and grouting tools to move precisely along the crack path, realizing the automated operation of crack detection, cleaning and grouting, improving processing efficiency and accuracy, and reducing manual intervention and errors.

[0014] 2. This utility model provides an emergency water-stopping treatment device for dam cracks. By integrating a mixing mechanism, a delivery pump and an air pump, it can quickly switch between cleaning and grouting tools. Through magnetic adsorption and plug-in fixing, it ensures the stability and reliability of the tools. At the same time, the mixing mechanism continuously stirs the water-stopping material to prevent solidification, ensuring the uniformity and quality of the grouting material and improving the reliability of the water-stopping treatment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the portal frame of this utility model; Figure 3 This is a bottom view of the horizontal drive box structure of this utility model; Figure 4 This utility model Figure 3 Enlarged schematic diagram of location A in the middle; Figure 5 This is a rear view schematic diagram of the portal frame of this utility model; Figure 6 This is a schematic diagram of the hybrid mechanism structure of this utility model.

[0016] In the diagram: 1. Movable base; 11. Conveying pump; 111. Material conveying hose; 112. Crack grouting nozzle; 12. Air pump; 2. Gantry frame; 21. Crack gauge; 22. Lifting drive groove; 221. Crack protection belt one; 23. Limiting sliding groove; 231. Limiting sliding rod; 24. Servo motor one; 241. Lifting screw; 242. Lifting plate; 25. Horizontal drive box; 251. Gantry plate; 252. Slide plate; 253. Servo motor two; 2531. Horizontal screw; 2532. Horizontal moving plate; 254. 1. Seam protection strip 2; 255. Guide slide bar; 256. Mounting plate; 2561. Through hole; 2562. High-pressure airflow cleaning gun; 2563. Airflow hose; 2564. Limiting extension plate; 2565. Insert rod; 2566. Insertion hole; 2567. Magnetic ring; 26. Semi-circular retaining ring; 3. Mixing mechanism; 31. Storage tank; 32. Agitator motor; 33. Agitator rod; 34. Feeding threaded pipe; 35. Threaded cap; 36. Drain pipe; 37. Butterfly valve; 4. Moving handrail; 5. Self-locking casters; 6. Support feet. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] like Figure 1 As shown, an emergency water-stopping device for dam cracks includes a mobile base 1. The bottom of the mobile base 1 is provided with four self-locking casters 5 and support legs 6 in a rectangular array. The top of the mobile base 1 is provided with a mobile handrail 4. A gantry frame 2 is fixedly installed on the front side of the top of the mobile base 1. A mixing mechanism 3 is provided on the rear side of the top of the mobile base 1. The mixing mechanism 3 is located on the front side of the mobile base 1. A delivery pump 11 and an air pump 12 are fixedly installed on the top of the mobile base 1 between the mixing mechanism 3 and the opposite side of the gantry frame 2.

[0019] like Figure 1 and Figure 2 As shown, a crack detector 21 is fixedly installed at the front horizontal position of the portal frame 2 for scanning and detecting crack trajectories. A lifting drive groove 22 is provided on the right vertical side of the left side of the portal frame 2. A servo motor 24 is fixedly installed on the top left side of the horizontal position of the portal frame 2. The output shaft of the servo motor 24 passes through the inner cavity of the portal frame 2 and is fixedly installed with a lifting screw 241. A lifting plate 242 is threaded on the outer wall of the lifting screw 241. A horizontal drive box 25 is connected to the right side of the lifting plate 242. A portal plate 251 is fixedly installed on the right side of the horizontal drive box 25. A sliding plate 252 is fixedly installed on the right side of the portal plate 251. A left-right through limiting sliding groove 23 is provided on the right vertical position of the portal frame 2. A limiting sliding rod 231 is fixedly installed between the upper and lower sides of the inner wall of the limiting sliding groove 23. The sliding plate 252 is slidably connected to the limiting sliding rod 231. A slit protection strip 221 is provided on the right side of the inner cavity of the lifting drive groove 22. The slit protection strip 221 has a vertical slit that runs through the left and right sides. A connecting plate 1 is connected between the lifting plate 242 and the horizontal drive box 25. The connecting plate 1 is slidably connected to the vertical slit of the slit protection strip 221 to protect the inner cavity of the lifting drive groove 22.

[0020] like Figure 2 and Figure 3 As shown, a servo motor 253 is provided on the right side of the horizontal drive box 25. The servo motor 253 is located inside the gantry plate 251. The output shaft of the servo motor 253 passes through the inner cavity of the horizontal drive box 25 and is fixedly installed with a horizontal lead screw 2531. A horizontal moving plate 2532 is threaded on the outer wall of the horizontal lead screw 2531. A through groove is opened on the front side of the horizontal drive box 25, which passes through its inner cavity. A slot protection strip 254 is fixedly installed on the inner side of the through groove. The slot protection strip 254 has a transverse slit that passes through the front and back. A connecting plate 2 is fixedly connected to the front end of the horizontal moving plate 2532. The front end of the connecting plate 2 passes through the transverse slit to the front side of the horizontal drive box 25 and is fixedly installed with an mounting plate 256. A guide slide rod 255 is fixedly installed between the left and right sides of the inner wall of the horizontal drive box 25. The horizontal moving plate 2532 is slidably connected to the guide slide rod 255 for left and right movement limit.

[0021] like Figure 4 As shown, the mounting plate 256 has a through hole 2561 that runs from front to back. A high-pressure airflow cleaning gun 2562 is installed through the inner ring of the through hole 2561. An airflow hose 2563 is fixedly connected to the rear end of the high-pressure airflow cleaning gun 2562. The other end of the airflow hose 2563 is fixedly connected to the output end of the air pump 12. Two left and right limiting extension plates 2564 are fixedly installed on the outer wall of the high-pressure airflow cleaning gun 2562. A rod 2565 is fixedly installed at the front end of each of the two limiting extension plates 2564. Two left and right insertion holes 2566 are opened on the rear side of the mounting plate 256. The two rods 2565 are respectively engaged with the two insertion holes 2566. A magnetic ring 2567 is fixedly installed on the rear side of the mounting plate 256. The inner ring of the magnetic ring 2567 runs through the through hole 2561 from front to back. The limiting extension plates 2564 and the magnetic ring 2567 are mutually attracted and positioned. The high-pressure airflow cleaning gun 2562 and the crack injection nozzle 112 can be quickly replaced by the snap-fit ​​of the insertion rod 2565 and the insertion hole 2566. The magnetic ring 2567 is made of neodymium iron boron permanent magnet material, which provides an attraction force of ≥10N to ensure that the tool does not loosen in the vibration environment. The through hole 2561 of the mounting plate 256 is embedded with an O-ring seal, which forms a seal when the tool is inserted to prevent airflow or material leakage. When switching tools, the operator only needs to pull the tool lightly to overcome the magnetic force. No additional tools are required for the disassembly process.

[0022] like Figure 5 As shown, semi-circular retaining rings 26 are fixedly installed on the rear side of the two vertical parts of the portal frame 2. The output end of the conveying pump 11 is fixedly connected to the conveying hose 111. The other end of the conveying hose 111 is fixedly connected to the crack injection nozzle 112. The outer wall of the crack injection nozzle 112 has the same structure as the outer wall of the high-pressure airflow cleaning gun 2562. The crack injection nozzle 112 is temporarily placed in the inner ring of one of the two semi-circular retaining rings 26. The conveying pump 11 is a peristaltic pump or gear pump, and the flow rate can be adjusted according to the crack width. The air pump 12 is an oil-free air compressor to ensure that dust and moisture in the crack are completely removed. The material conveying hose 111 and the air flow hose 2563 are both made of pressure-resistant rubber hoses.

[0023] like Figure 6 As shown, the mixing mechanism 3 includes a storage tank 31. The input end of the conveying pump 11 extends to the bottom of the inner cavity of the storage tank 31. A stirring motor 32 is fixedly installed at the center of the top of the storage tank 31. The output shaft of the stirring motor 32 extends to the inner cavity of the storage tank 31, and several stirring rods 33 arranged vertically are fixedly installed in a ring array on the outer wall. A feeding threaded pipe 34 that penetrates the inner cavity is fixedly connected to the eccentric part of the top of the storage tank 31. A threaded cap 35 is threadedly installed on the top of the feeding threaded pipe 34. A drain pipe 36 that penetrates the bottom of the inner cavity is fixedly connected to the lower rear end of the storage tank 31. A butterfly valve 37 is provided on the outer wall of the drain pipe 36 for sealing or opening the drain pipe 36. The water-stopping material filled in the storage tank 31 is epoxy resin or polyurethane grout. The inner wall of the storage tank 31 is coated with an anti-stick coating to prevent the material from sticking together. The butterfly valve 37 of the drain pipe 36 is opened after the filling is completed, and the storage tank 31 is cleaned with water or solvent. The waste liquid is discharged through the drain pipe 36.

[0024] The signal output terminal of the crack instrument 21 is electrically connected to the signal input terminals of servo motor 253 and servo motor 24. The crack detector 21 uses built-in image processing algorithms such as edge detection or trajectory fitting to identify the contour and path of cracks in real time, generating two-dimensional coordinate data of the cracks. This data is converted into control signals and sent to servo motor 24 and servo motor 253 via PLC or microprocessor. Servo motor 24 controls the rotation angle of the lifting screw 241 according to the longitudinal coordinate of the crack, realizing the vertical positioning of the high-pressure airflow cleaning gun 2562. Servo motor 253 controls the rotation angle of the horizontal screw 2531 according to the transverse coordinate of the crack, realizing the horizontal positioning of the high-pressure airflow cleaning gun 2562. The motion accuracy can be controlled within ±1mm, ensuring the accuracy of cleaning and injection.

[0025] The operation process of the device includes the following steps: Step 1: Move the device to the vicinity of the crack, position it using the self-locking caster 5, and lower the support leg 6 for stabilization; Step 2: Start the crack instrument 21 to scan the crack and generate trajectory data; Step 3: The system automatically controls servo motor 1 24 and servo motor 253 to position the high-pressure airflow cleaning gun 2562 to the starting point of the crack; Step 4: Start the air pump 12 to clean the crack with high-pressure airflow, removing dust and loose materials; Step 5: Switch tools, install the crack injection nozzle 112, start the delivery pump 11 and stirring motor 32 to inject materials; Step 6: After injection is completed, turn off the pump and motor, clean the storage tank 31, and retract the support leg 6 moving device.

[0026] The working principle of the emergency water-stopping device for dam cracks will be explained in detail below.

[0027] like Figure 1-6As shown, firstly, the device is moved to the vicinity of the dam crack by moving the handle 4 and the self-locking casters 5. The support legs 6 are adjusted to ensure the stability of the device. The crack detector 21 is started to scan and detect the crack and obtain the trajectory data of the crack. The crack detector 21 transmits the signal to the servo motor 1 24 and the servo motor 253 to control the movement of the lifting plate 242 and the horizontal moving plate 2532. When cleaning the crack, the high-pressure airflow cleaning gun 2562 is engaged with the insertion hole 2566 through the insertion rod 2565 and fixed by the magnetic ring 2567. When air pump 12 starts, it provides high-pressure airflow to high-pressure airflow cleaning gun 2562 through airflow hose 2563 to blow and clean the cracks. Servo motor 1 24 drives lifting screw 241 to rotate, causing lifting plate 242 to move vertically along lifting drive groove 22, thereby adjusting the longitudinal position of high-pressure airflow cleaning gun 2562. Servo motor 253 drives horizontal screw 2531 to rotate, causing horizontal moving plate 2532 to move horizontally along guide slide 255, thereby adjusting the lateral position of high-pressure airflow cleaning gun 2562. The slide plate 252 slides along the limit slide bar 231 to ensure smooth movement. Servo motor 1 24 and servo motor 253 adopt a closed-loop control mode and have built-in encoders to provide position signals. After cleaning, the high-pressure airflow cleaning gun 2562 is removed, and the crack injection nozzle 112 is taken out from the semi-circular retaining ring 26 and installed on the mounting plate 256. It is also fixed by the insert rod 2565 and the magnetic ring 2567. In the mixing mechanism 3, the stirring motor 32 drives the stirring rod 33 to rotate, which holds the water-stopping material in the storage tank 31. Continue stirring to prevent solidification. The delivery pump 11 starts and delivers the material to the crack injection nozzle 112 through the material delivery hose 111 for precise injection of the crack. After injection, the storage tank 31 can be cleaned through the drain pipe 36 and butterfly valve 37. Throughout the process, crack protection belt 1 221 and crack protection belt 254 protect the inner cavity of the lifting drive groove 22 and the horizontal drive box 25, respectively, to prevent dust and impurities from entering. The device achieves rapid crack detection, cleaning and injection through automated control, improving processing efficiency and accuracy.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An emergency water-stopping device for dam cracks, comprising a movable base (1), wherein the bottom of the movable base (1) is provided with four self-locking casters (5) and support legs (6) arranged in a rectangular array, and the top of the movable base (1) is provided with a movable handrail (4), characterized in that: A portal frame (2) is fixedly installed on the top front side of the mobile base (1). A mixing mechanism (3) is provided on the top rear side of the mobile base (1). The mixing mechanism (3) is located on the front side of the mobile base (1). A delivery pump (11) and an air pump (12) are fixedly installed on the top of the mobile base (1) between the mixing mechanism (3) and the opposite side of the portal frame (2). A crack detector (21) is fixedly installed at the horizontal front end of the portal frame (2) for scanning and detecting crack trajectories. A lifting drive groove (22) is opened on the right vertical side of the left side of the portal frame (2). A servo motor (24) is fixedly installed on the top left side of the horizontal position of the portal frame (2). The output shaft of (24) passes through the inner cavity of the gantry frame (2) and is fixedly installed with a lifting screw (241). The outer wall of the lifting screw (241) is threaded with a lifting plate (242). The right side of the lifting plate (242) is connected to a horizontal drive box (25). The right side of the horizontal drive box (25) is fixedly installed with a gantry plate (251). The right side of the gantry plate (251) is fixedly installed with a sliding plate (252). A left-right through limit sliding groove (23) is opened vertically on the right side of the gantry frame (2). A limit sliding rod (231) is fixedly installed between the upper and lower sides of the inner wall of the limit sliding groove (23). The sliding plate (252) is slidably connected to the limit sliding rod (231).

2. The emergency water-stopping device for dam cracks according to claim 1, characterized in that: The inner right side of the lifting drive groove (22) is provided with a slit protection strip (221), which has a vertical slit running through the left and right sides. A connecting plate is connected between the lifting plate (242) and the horizontal drive box (25). The connecting plate is slidably connected to the vertical slit of the slit protection strip (221) to protect the inner cavity of the lifting drive groove (22).

3. The emergency water-stopping device for dam cracks according to claim 1, characterized in that: A servo motor 2 (253) is provided on the right side of the horizontal drive box (25). The servo motor 2 (253) is located inside the portal plate (251). The output shaft of the portal plate (251) passes through the inner cavity of the horizontal drive box (25) and is fixedly installed with a horizontal lead screw (2531). A horizontal moving plate (2532) is threaded on the outer wall of the horizontal lead screw (2531). A through groove is opened on the front side of the horizontal drive box (25) to penetrate its inner cavity. A slotted protective strip 2 (254) is fixedly installed on the inner side of the through groove. The slotted protective strip 2 (254) has a transverse seam that passes through the front and back. A connecting plate 2 is fixedly connected to the front end of the horizontal moving plate (2532). The front end of the connecting plate 2 passes through the transverse seam to the front side of the horizontal drive box (25) and is fixedly installed with an mounting plate (256).

4. The emergency water-stopping device for dam cracks according to claim 3, characterized in that: A guide slide rod (255) is fixedly installed between the left and right sides of the inner wall of the horizontal drive box (25). The horizontal moving plate (2532) is slidably connected to the guide slide rod (255) for left and right movement limit.

5. The emergency water-stopping device for dam cracks according to claim 3, characterized in that: The mounting plate (256) has a through hole (2561) that runs from front to back. A high-pressure airflow cleaning gun (2562) is installed through the inner ring of the through hole (2561). An airflow hose (2563) is fixedly connected to the rear end of the high-pressure airflow cleaning gun (2562). The other end of the airflow hose (2563) is fixedly connected to the output end of the air pump (12). Two left and right limiting extension plates (2564) are fixedly installed on the outer wall of the high-pressure airflow cleaning gun (2562). The front end of the extension plate (2564) is fixedly installed with a plug rod (2565). The rear side of the mounting plate (256) is provided with two plug holes (2566). The two plug rods (2565) are respectively engaged with the two plug holes (2566). The rear side of the mounting plate (256) is fixedly installed with a magnetic ring (2567). The inner ring of the magnetic ring (2567) is connected to the through hole (2561) from front to back. The limiting extension plate (2564) and the magnetic ring (2567) are mutually attracted and positioned.

6. The emergency water-stopping device for dam cracks according to claim 5, characterized in that: The two vertical rear sides of the portal frame (2) are fixedly installed with semi-circular retaining rings (26). The output end of the conveying pump (11) is fixedly connected to a material conveying hose (111). The other end of the material conveying hose (111) is fixedly connected to a crack injection nozzle (112). The outer wall of the crack injection nozzle (112) has the same structure as the outer wall of the high-pressure airflow cleaning gun (2562). The crack injection nozzle (112) is temporarily placed in the inner ring of one of the two semi-circular retaining rings (26).

7. The emergency water-stopping device for dam cracks according to claim 1, characterized in that: The mixing mechanism (3) includes a storage tank (31), the input end of the conveying pump (11) extends to the bottom of the inner cavity of the storage tank (31), a stirring motor (32) is fixedly installed at the center of the top of the storage tank (31), the output shaft of the stirring motor (32) extends to the inner cavity of the storage tank (31), and a number of stirring rods (33) arranged vertically are fixedly installed in a ring array on the outer wall.

8. The emergency water-stopping device for dam cracks according to claim 7, characterized in that: The top of the storage tank (31) is fixedly connected to a feed threaded pipe (34) that passes through its inner cavity. The top of the feed threaded pipe (34) is threaded with a threaded cap (35). The rear end of the storage tank (31) is fixedly connected to a drain pipe (36) that passes through the bottom of its inner cavity. The outer wall of the drain pipe (36) is provided with a butterfly valve (37) for sealing or opening the drain pipe (36).

9. The emergency water-stopping device for dam cracks according to claim 3, characterized in that: The signal output terminal of the crack instrument (21) is electrically connected to the signal input terminals of servo motor 2 (253) and servo motor 1 (24).

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