Rapid plugging device and plugging method used after collapse extraction

Abstract

The invention discloses a rapid plugging device used after collapse lifting and a plugging method. The rapid plugging device comprises a plurality of frames which are connected with one another. Each single face of each single frame comprises an upper chord, a lower chord, vertical rods and inclined rods, the vertical rods connect the two ends of the upper chord and the two ends of the lower chord to form a frame-shaped structure, the inclined rods are obliquely connected into the frame-shaped structure, the four single faces serve as side faces and are perpendicularly welded to one another to form a cube structure, and iron gauzes are welded to the peripheries of the four side faces. The end parts of the upper and lower chord members are welded with female and male joints for transverse connection, and the top and bottom parts of the upper and lower chord members are provided with screw holes for vertical connection. According to the method, the water flow speed of the breach can be effectively reduced, and good construction conditions are provided for follow-up blocking and reinforcing of the burst embankment.

Description

Technical Field

[0001] The present invention relates to the field of flood prevention and rescue after a dam breach, and more specifically, to a device and method for rapid plugging after a dam breach. Background Art

[0002] Affected by global warming, the frequency of extreme rainfall in my country is on the rise, and the duration of rainfall is on the rise. As a result, flood control work across the country is facing severe challenges. The main cause of floods in the Yangtze River region is long-term heavy rains, of which heavy rains are mostly concentrated in May-October, accounting for more than 70% to 90% of the annual rainfall. Since the ground elevation in the middle and lower reaches of the Yangtze River is lower than the local water level, this area is the most concentrated, serious and frequent area of ​​water disasters in the Yangtze River Basin. On July 5, 2024, a pipe burst occurred in the first-line embankment of Dongting Lake in Tuanzhouwan, Huarong County, Yueyang City (pile number 19+800). After the plugging failed, a breach quickly formed. The water flow speed at the breach was extremely fast, and various plugging methods failed. Eventually, the longest breach width reached 226m, causing huge property losses, the flooded area exceeded 47 square kilometers, and a total of 7,680 people were evacuated.

[0003] The dam breach is a sudden event, and the breach will continue to expand over time, so personnel and materials must be quickly organized for emergency operations. There are many existing flood control methods, such as filling earth and stone plugging, bundling box plugging, grass and soil cofferdam plugging, throwing material flat plugging and other methods of directly throwing materials for plugging. These methods have low requirements for construction personnel and high requirements for plugging materials. The construction process is simple and clear, but the breach materials are easily washed away by the water flow when the plugging distance is long and the water flow speed is too fast, which reduces the plugging efficiency and wastes the plugging materials. Methods such as pile plugging and steel-wood-earth-rock composite dam are suitable for various flow rates, can improve the plugging efficiency of materials, and have low requirements for the type and particle size of plugging materials, but have high requirements for construction process design and professional skills of operators. Special methods such as the shipwreck method have high plugging efficiency and can significantly reduce the water flow speed, but the plugging effect is limited by the size of the ship and the driver's operating level, and the protection cost is high, which is not suitable for conventional protection methods.

[0004] From the above, we can see that methods such as pile driving, bridge building, shipwreck method, steel-wood-earth-rock composite dam, etc. can effectively block large-scale breaches, but they require construction and management personnel to have professional disaster relief capabilities, so it is difficult to directly promote their use. The blocking method of using materials to directly block the breach has lower requirements for construction personnel and a simple and clear construction process, but the blocking effect is poor for breaches with high flow rates. Therefore, a rapid blocking device and blocking method for post-breach damming is developed, which can simply and quickly reduce the water flow velocity at the breach mouth to make up for the defect that the direct blocking method cannot be applied to high-flow, large-scale breaches. Summary of the invention

[0005] The purpose of the present invention is to provide a device and method for rapid plugging after a breach. The device is formed by quickly splicing a plurality of steel frames. The device is placed in front of the breach and materials are filled inside to form a wall. This can effectively reduce the water flow velocity of the breach and provide good construction conditions for subsequent plugging and reinforcement of the breach.

[0006] The technical solution adopted by the present invention to solve this technical problem is: a device for rapid plugging after a breach, comprising a plurality of mutually connected frames; a single side of a single frame comprises an upper chord, a lower chord, a vertical rod and an oblique rod, the vertical rod connects the two ends of the upper chord and the lower chord to form a frame structure, the oblique rod is obliquely connected to the frame structure, four single sides are welded perpendicularly to each other as side surfaces to form a cubic structure, wire meshes are welded to the peripheries of the four side surfaces, the ends of the upper and lower chords are welded with male and female joints for horizontal connection, and the tops and bottoms of the upper and lower chords are provided with screw holes for vertical connection.

[0007] As a further solution of the present invention, the vertical bars, diagonal bars, upper chord bars and lower chord bars in the frame are all made of square steel.

[0008] As a further solution of the present invention, the upper chord, lower chord, vertical rod, diagonal rod and male and female joints in the frame are all connected by welding, and the wire mesh on each side is welded to the horizontal rod, vertical rod and diagonal rod.

[0009] As a further solution of the present invention, the left and right male and female joints of the upper and lower chords are at the same horizontal height, the male and female joints on the same side are in the same vertical plane, and the screw holes of the upper and lower chords are located in the same vertical plane.

[0010] As a further solution of the present invention, when adjacent frames are connected transversely, the male-female joints on one side of the upper and lower chords of one frame are closely attached to the male-female joints on the upper and lower chords of another frame, and the male-female joints of the left and right frames are fixed with bolts.

[0011] As a further solution of the present invention, when adjacent frames are vertically connected, the upper chord of one frame is aligned with the lower chord of another frame, and the upper and lower chords of the upper and lower frames are fixed with bolts.

[0012] The present invention also provides a plugging method using a rapid plugging device, and the plugging of a small breach comprises the following steps: A1. Preliminary preparation Pull the materials needed for plugging to the breach, determine the length and height of the plugging device according to the size of the breach and hydrological conditions, and wrap the original embankment head of the breach to prevent it from expanding further; after the breach stops expanding, install anchor piles on both sides of the breach to fix the plugging device; A2. Fixing the device Tie the rope to the uncovered side of the plugging device and place the plugging device vertically into the water; after one side of the device touches the bottom, pull the rope to bring the plugging device close to the dam and make it roughly flush with the dam, and fix the rope to the positioning anchor pile to successfully fix the plugging device; A3. Block the gap Flood prevention materials are filled into the sealing device to form a fill wall close to the riverbed inside the sealing device. Subsequently, a sealing method is selected according to the breach and on-site conditions to seal the breach in the filling section.

[0013] As a further solution of the present invention, the blocking of a large breach comprises the following steps: B1. Assemble the plugging device According to the size of the breach and the hydrological conditions, determine the length and height of the plugging device. The length of the plugging device must be greater than the length of the breach. At the same time, align the upper chord and lower chord of the multi-frame in the vertical direction until the plugging height requirement is met. The height of the plugging device must be higher than the breach water level to complete the assembly of the plugging device. B2. Preliminary preparation for plugging Wrap the original embankment head of the breach to prevent it from expanding further, and prepare for piling after the breach stops expanding; select appropriate positions according to the breach size and breach water flow speed to drive piles into the mud bed in sequence, so that the line connecting the piles is basically flush with the direction of the embankment, and the distance between the first pile and the last pile is basically the same as the length of the breach. This step can be performed simultaneously with step S1; B3. Fixing the device Tie the floating bag to the four corners of the plugging device and place it in the water, ensuring that the buoyancy is sufficient to make the plugging device float on the water surface; tie the traction rope to the plugging device, and pull the plugging device floating on the water surface to the piles on the front of the dam facing the water; remove the floating bag on the unobstructed side, and one side of the plugging device sinks to the riverbed due to gravity. Since the height of the plugging device is higher than the water surface, the plugging device is in an inclined state at this time; remove the traction rope and the floating bag on the other side, and use the rope to pull the plugging device toward the dam, so that the plugging device relies on the piles. At this time, the plugging device is in a vertical state, and the top of the device is higher than the water surface; B4. Filling materials After the plugging device is fixed, fill the plugging module with filling materials, and stack the filling materials layer by layer until the filling materials are higher than the horizontal surface. The materials are firmly bound inside the plugging device by the wire mesh to form a wall made of filling materials; B5. Filling the gap After checking that the overall displacement of the piles, the velocity reduction, and the overall stability can meet the construction requirements, start filling the gaps until the construction is completed.

[0014] As a further solution of the present invention, when the dam is seriously damaged by water scouring, blocking includes the following steps: S1. Assemble the plugging device This step is the same as B1; S2. Preliminary preparation for plugging A row of wooden piles is built along the water-facing side of the breached dike. The length of the first and last wooden piles is greater than the length of the plugging module. Filling materials are placed between the wooden piles and the dike to complete the head wrapping operation. S3. Fixing the device This step is the same as B3; S4. Filling materials After the plugging device is fixed, flood control materials are filled into the plugging device, and fillers are filled into the single-section frame from the unobstructed parts on both sides of the plugging device until the fillers are higher than the horizontal plane. The filling of this section is completed, and the water flow is concentrated through the unfilled position in the middle and the breach of the dam; subsequently, the filling positions on both sides are filled section by section to complete the filling in the middle to form a wall, creating favorable conditions for subsequent construction; S5. Filling the gap This step is the same as B5.

[0015] The present invention has at least the following beneficial effects: The present invention provides a quickly installed embankment breach plugging device, which can quickly splice single modules into a plugging device suitable for various situations by bolt connection. The device has a simple assembly method, fast installation, high plugging efficiency, and can meet the emergency needs of embankment breach rescue.

[0016] The present invention provides a low-cost, safe and convenient dike breach sealing device and method. The materials used in the device and method are all common flood control materials, and no personnel need to go into the water to operate during the sealing process. The dike breach rescue work can be completed at a low cost while ensuring the safety of the rescue personnel.

[0017] The present invention provides a breach plugging device and a construction method suitable for various breach situations. The size of the device can be freely adjusted by construction personnel according to on-site conditions. The construction method is simple and easy to implement and can be used for breach rescue work in various situations.

[0018] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the framework of the present invention; Figure 2 This is a schematic diagram of the horizontal connection of the framework of the present invention; Figure 3 It is a schematic diagram of the horizontal connection interface of the present invention; Figure 4 It is a schematic diagram of the vertical connection of the present invention; Figure 5 is a schematic diagram of a lateral connection interface of the present invention; Figure 6 This is a schematic diagram of the early stage preparation for large breach plugging of the present invention; Figure 7 It is a schematic diagram of fixing a large breach device of the present invention; Figure 8 This is a schematic diagram of a large breach plugging breach according to the present invention; Fig. 9 It is a schematic diagram of fixing the small breach device of the present invention; Fig.10 This is a schematic diagram of a small breach plugging breach according to the present invention; Fig.11 It is a schematic diagram of filling materials in the case where the dam of the present invention is seriously damaged by water scouring; Fig.12 It is a schematic diagram of sealing a breach in a dam that is severely damaged by water scouring according to the present invention.

[0020] Among them, 1-upper chord, 2-lower chord, 3-vertical rod, 4-diagonal rod, 5-wire mesh, 6-bolt, 7-dike, 8-ship, 9-traction rope, 10-plugging device, 11-floating bag, 12-pile, 13-throwing boat, 14-filling section, 15-positioning anchor pile, 16-female joint, 17-male joint. DETAILED DESCRIPTION

[0021] The present invention is described in detail and completely below in conjunction with the accompanying drawings. A person of ordinary skill in the art will be able to implement the present invention based on these descriptions. Before describing the present invention in conjunction with the accompanying drawings, it should be particularly pointed out that the technical solutions and technical features provided in each part of the present invention, including the following description, can be combined with each other without conflict.

[0022] In addition, the embodiments of the present invention involved in the following description are generally only a part of the embodiments of the present invention, rather than all the embodiments. Therefore, based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and implementations, and its specific implementation process is as follows: like Figures 1 to 5As shown, the present invention provides a device for rapid plugging after a dam breach, comprising a plurality of interconnected frames; a single side of a single frame comprises an upper chord, a lower chord, a vertical rod and an oblique rod, the vertical rod connects the two ends of the upper chord and the lower chord to form a frame structure, the oblique rod is obliquely connected in the frame structure, and the four single sides are welded perpendicularly to each other as side surfaces to form a cubic structure, and the four side surfaces of the frame are welded with oblique rods to ensure structural stability, and the rods have a small water blocking surface when the frame is not filled with fillers, and the impact force of the flood on the frame is small. Wire meshes are welded to the periphery of the four side surfaces to prevent the internal fillers from being dispersed by high-speed water flow. The ends of the upper and lower chords are welded with male and female joints for horizontal connection, and the top and bottom of the upper and lower chords are provided with screw holes for vertical connection, and a single frame can be quickly connected left and right and up and down with bolts to form a plugging device, and the sides of the internal frame of the plugging device are provided with wire meshes to restrict the loss of internal materials, and the top and bottom adopt an unobstructed design, which is convenient for the filling materials to be put in from the top, and the materials can be normally piled up to fill the uneven mud bed, which has certain environmental adaptability.

[0024] In the above technical solution, the plugging device can be quickly assembled by bolting a single frame, and the size of the device can be adjusted according to the breach situation. The plugging method can be used in a variety of situations to safely and effectively reduce the flow velocity of the breach, creating favorable conditions for subsequent restoration and reinforcement of the breach.

[0025] The technical solution may also include the following technical details to better achieve the technical effect: the vertical bars, diagonal bars, upper chord bars and lower chord bars in the frame are all square steel.

[0026] This technical solution can also include the following technical details to better achieve the technical effect: the upper chord, lower chord, vertical rod, diagonal rod and yin-yang joints in the frame are all connected by welding, and the wire mesh on each side is welded to the horizontal rod, vertical rod and diagonal rod.

[0027] This technical solution can also include the following technical details to better achieve the technical effect: the left and right male and female joints of the upper and lower chords are at the same horizontal height, the male and female joints on the same side are in the same vertical plane, and the screw holes of the upper and lower chords are in the same vertical plane.

[0028] The technical solution may also include the following technical details to better achieve the technical effect: when adjacent frames are connected transversely, the yin-yang joints on one side of the upper and lower chords of one frame are placed close to the yin-yang joints on the upper and lower chords of the other frame, and the yin-yang heads of the left and right frames are fixed with bolts. In this way, multiple frames can be quickly fixed into a transverse blocking device.

[0029] The technical solution may also include the following technical details to better achieve the technical effect: when adjacent frames are vertically connected, the upper chord of one frame is aligned with the lower chord of another frame up and down, the upper and lower chords of the upper and lower frames are fixed with bolts, and multiple frames are fixed into a vertical blocking device in this way.

[0030] The present invention also provides a blocking method using the device for rapid blocking after collapse, such as Figures 9-10 As shown, the sealing of small breaches includes the following steps: A1. Preliminary preparation The materials needed for plugging are pulled to the breach. According to the size of the breach and the hydrological conditions, the length and height of the plugging device are determined. At the same time, the original embankment head of the breach is wrapped to prevent the breach from further expanding. After the breach stops expanding, positioning anchor piles are installed on both sides of the breach to facilitate the fixing of the plugging device. Among them, the positioning anchor pile is a positioning device used solely for small breaches. It can be directly installed on the embankment manually without relying on large equipment, while the pile wood is a fixed facility that must be installed by machinery, so it is used in large breaches. The positioning anchor piles are installed during the early preparation. Because the water flow speed of small breaches is slow and the impact force is low, there is no high requirement for the stress condition of the piles, only that they can fix the device.

[0031] A2. Fixing the device Tie the rope to the uncovered side of the plugging device and place the plugging device vertically into the water; after one side of the device touches the bottom, pull the rope to bring the plugging device close to the dam and make it roughly flush with the dam, and fix the rope to the positioning anchor pile to successfully fix the plugging device; A3. Block the gap Artificial filling is used to fill the sealing device with flood control materials such as rocks or sandbags, forming a filling wall close to the riverbed inside the sealing device, which can effectively slow down the water flow speed at the breach. The sealing method will be selected according to the breach and on-site conditions to seal the breach.

[0032] This technical solution may also include the following technical details to better achieve the technical effect: Figures 6-8 As shown, the sealing of large breaches (fast water flow) includes the following steps: B1. Assemble the plugging device Determine the length and height of the plugging device according to the size of the breach and the hydrological conditions. Align multiple frames horizontally, connect the female and male joints of the upper and lower chords until the plugging length requirement is met. The length of the plugging device must be greater than the length of the breach, and use bolts to connect and fix each yin and yang port. At the same time, align the upper and lower chords of the multiple frames in the vertical direction until the plugging height requirement is met. The height of the plugging device must be higher than the water level of the breach, and use bolts to connect and fix the reserved holes of the upper and lower chords. Finally, check the fixing of each bolt and the welding of the wire mesh to complete the assembly of the plugging device.

[0033] B2. Preliminary preparation for plugging Wrap the original embankment head of the breach to prevent it from expanding further, and prepare for piling after the breach stops expanding; select appropriate positions according to the breach size and breach water flow speed to drive piles into the mud bed in sequence, so that the line connecting the piles is basically flush with the direction of the embankment, and the distance between the first pile and the last pile is basically the same as the length of the breach. This step can be performed simultaneously with step S1; B3. Fixing the device Tie the floating bags to the four corners of the plugging device and place it in the water, ensuring that the buoyancy is sufficient to make the plugging device float on the water surface; tie the towing rope to the plugging device, and use the ship to tow the plugging device floating on the water surface to the piles on the front of the embankment; remove the floating bag on the unobstructed side, and one side of the plugging device sinks to the riverbed due to gravity. Since the height of the plugging device is higher than the water surface, the plugging device is in an inclined state at this time; remove the towing rope and the floating bag on the other side, and use the rope to pull the plugging device toward the embankment, so that the plugging device relies on the piles. At this time, the plugging device is in a vertical state, and the top of the device is higher than the water surface; B4. Filling materials After the plugging device is fixed, use a throwing boat or manual feeding to fill the plugging module with stone blocks, sandbags and other filling materials. In order to reduce the pressure of the mud bed, the flat paving method is generally used for filling operations. The filling materials are stacked layer by layer until the filling materials are higher than the horizontal plane. The materials are firmly bound inside the plugging device by wire mesh to form a wall of filling materials. The wall can effectively reduce the water flow speed at the breach, creating favorable conditions for subsequent dam repair and reinforcement operations; B5. Filling the gap After checking the overall displacement of the piles, the flow rate reduction, and the overall stability to see if they meet the construction requirements, start filling the gap in the filling section. Determine the sealing method based on the breach and on-site conditions, such as vertical plugging if the geological conditions are good, and horizontal plugging if the water flow rate is fast, until the construction is completed.

[0034] This technical solution may also include the following technical details to better achieve the technical effect: Figures 11-12As shown in the figure, the dam is seriously damaged by water erosion. It is necessary to prevent the water from directly impacting the dam. The blocking includes the following steps: S1. Assemble the plugging device This step is the same as B1.

[0035] S2. Preliminary preparation for plugging A row of wooden piles is built along the water-facing side of the breached dike. The length of the first and last wooden piles is greater than the length of the plugging module. Sandbags and other filling materials are filled inside the gap between the wooden piles and the dike to complete the head-wrapping operation. S3. Fixing the device This step is the same as B3.

[0036] S4. Filling materials After the plugging device is fixed, necessary flood control materials such as stones and sandbags are filled into the plugging device by throwing materials boats or manual feeding. In order to reduce the frontal scouring of the dam by water flow, fillers are filled into the single-section frame from the unobstructed parts on both sides of the plugging device until the fillers are higher than the horizontal plane. The filling of this section is completed. At this time, the water flow on both sides cannot pass smoothly through the filling positions on both sides of the device. The water flow is concentrated through the unfilled position in the middle and the breach of the dam. Therefore, the dams on both sides are not directly impacted by the water flow, which effectively reduces the water flow pressure on the dam; subsequently, the filling is completed in sections from the filling positions on both sides to the middle part to form a wall, creating favorable conditions for subsequent construction; S5. Filling the gap This step is the same as B5.

[0037] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the embodiments shown and described herein.

Claims

1. A device for rapid plugging after a breach, characterized in that: It comprises a number of interconnected frames; a single side of a single frame comprises an upper chord, a lower chord, a vertical rod and an oblique rod, the vertical rod connects the two ends of the upper chord and the lower chord to form a frame structure, the oblique rod is obliquely connected in the frame structure, the four single sides are welded perpendicularly to each other as side surfaces to form a cubic structure, the outer peripheries of the four side surfaces are welded with wire mesh, the ends of the upper and lower chords are welded with male and female joints for horizontal connection, the tops and bottoms of the upper and lower chords are provided with screw holes for vertical connection.

2. The device for rapid plugging after collapse according to claim 1, characterized in that: The vertical bars, diagonal bars, upper chord bars and lower chord bars in the frame are all made of square steel.

3. The device for rapid plugging after collapse according to claim 1, characterized in that: The upper chord, lower chord, vertical rod, diagonal rod and male-female joints in the frame are connected by welding, and the wire mesh on each side is welded to the horizontal rod, vertical rod and diagonal rod.

4. The device for rapid plugging after collapse according to claim 1, characterized in that: The left and right male and female joints of the upper and lower chords are at the same horizontal height, the male and female joints on the same side are in the same vertical plane, and the screw holes of the upper and lower chords are located in the same vertical plane.

5. The device for rapid plugging after collapse according to claim 1, characterized in that: When adjacent frames are connected horizontally, the male-female joints on one side of the upper and lower chords of one frame are placed close to the male-female joints on the upper and lower chords of the other frame, and the male-female joints of the left and right frames are fixed with bolts.

6. The device for rapid plugging after collapse according to claim 1 or 5, characterized in that: When adjacent frames are connected vertically, align the upper chord of one frame with the lower chord of another frame, and use bolts to fix the upper and lower chords of the upper and lower frames.

7. A plugging method using the device for rapid plugging after collapse according to any one of claims 1 to 6, characterized in that: The sealing of small breaches includes the following steps: A1. Preliminary preparation Pull the materials needed for plugging to the breach, determine the length and height of the plugging device according to the size of the breach and hydrological conditions, and wrap the original embankment head of the breach to prevent it from expanding further; after the breach stops expanding, install positioning anchor piles on both sides of the breach to facilitate fixing the plugging device; A2. Fixing the device Tie the rope to the uncovered side of the plugging device and place the plugging device vertically into the water; after one side of the device touches the bottom, pull the rope to bring the plugging device close to the dam and make it roughly flush with the dam, and fix the rope to the positioning anchor pile to successfully fix the plugging device; A3. Block the gap Flood prevention materials are filled into the sealing device to form a fill wall close to the riverbed inside the sealing device. Subsequently, a sealing method is selected according to the breach and on-site conditions to seal the breach in the filling section.

8. The blocking method according to claim 7, characterized in that: The sealing of large breaches includes the following steps: B1. Assemble the plugging device According to the size of the breach and the hydrological conditions, determine the length and height of the plugging device. The length of the plugging device must be greater than the length of the breach. At the same time, align the upper chord and lower chord of the multi-frame in the vertical direction until the plugging height requirement is met. The height of the plugging device must be higher than the breach water level to complete the assembly of the plugging device. B2. Preliminary preparation for plugging Wrap the original embankment head of the breach to prevent it from expanding further, and prepare for piling after the breach stops expanding; select appropriate positions according to the breach size and breach water flow speed to drive piles into the mud bed in sequence, so that the line connecting the piles is basically flush with the direction of the embankment, and the distance between the first pile and the last pile is basically the same as the length of the breach. This step can be performed simultaneously with step S1; B3. Fixing the device Tie the floating bag to the four corners of the plugging device and place it in the water, ensuring that the buoyancy is sufficient to make the plugging device float on the water surface; tie the traction rope to the plugging device, and pull the plugging device floating on the water surface to the piles on the front of the dam facing the water; remove the floating bag on the unobstructed side, and one side of the plugging device sinks to the riverbed due to gravity. Since the height of the plugging device is higher than the water surface, the plugging device is in an inclined state at this time; remove the traction rope and the floating bag on the other side, and use the rope to pull the plugging device toward the dam, so that the plugging device relies on the piles. At this time, the plugging device is in a vertical state, and the top of the device is higher than the water surface; B4. Filling materials After the plugging device is fixed, fill the plugging module with filling materials, and stack the filling materials layer by layer until the filling materials are higher than the horizontal surface. The materials are firmly bound inside the plugging device by the wire mesh to form a wall made of filling materials; B5. Filling the gap After checking that the overall displacement of the piles, the velocity reduction, and the overall stability can meet the construction requirements, start filling the gaps until the construction is completed.

9. The blocking method according to claim 7, characterized in that: When the dam is severely damaged by water erosion, the following steps are required for blocking: S1. Assemble the plugging device This step is the same as B1; S2. Preliminary preparation for plugging A row of wooden piles is built along the water-facing side of the breached dike. The length of the first and last wooden piles is greater than the length of the plugging module. Filling materials are placed between the wooden piles and the dike to complete the head wrapping operation. S3. Fixing the device This step is the same as B3; S4. Filling materials After the plugging device is fixed, flood control materials are filled into the plugging device, and fillers are filled into the single-section frame from the unobstructed parts on both sides of the plugging device until the fillers are higher than the horizontal plane. The filling of this section is completed, and the water flow is concentrated through the unfilled position in the middle and the breach of the dam; subsequently, the filling positions on both sides are filled section by section to complete the filling in the middle to form a wall, creating favorable conditions for subsequent construction; S5. Filling the gap This step is the same as B5.

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