A water flow impulsion self-expanding type river channel breach plugging method

Abstract

The application discloses a water flow force self-expanding type river channel breach plugging method, characterized in that a plugging pipeline of a multi-section sleeve type pipeline structure capable of being pulled out is thrown into a river channel in a water flow direction on a bank at an upstream end of a breach, the upper end of the plugging pipeline is fixed to the upstream end of the breach, the plugging pipeline is impacted by river water in the river channel, each section sleeve is self-unfolded, the last section sleeve exceeds a position of the breach and reaches a downstream end of the breach and is limited to an inner side wall of a bank at both ends of the breach under the impact of water flow outside the breach, and the breach is plugged. The application is suitable for the case that the river channel breach is long, and can quickly and reliably complete plugging of a large breach. The application has the advantages of high efficiency in a plugging construction process, good stability and reliability and the like.

Description

Technical Field

[0001] This invention relates to a water conservancy engineering technology, specifically to a method for sealing river breaches by self-expanding water flow force. Background Technology

[0002] River breaches are a common natural disaster in my country. During the breach of a production dike, the lateral widening process takes longer than the vertical downward cutting process and is a key factor affecting the extent and severity of flooding in the floodplain. Furthermore, the breach wave poses a significant threat to local life and property as it propagates downstream. In addition, the flow velocity at the breach is relatively higher than the river channel velocity, making it difficult for traditional closure methods to take hold in areas with high flow velocities, resulting in poor closure effectiveness. Moreover, the breach will widen further during this period, eventually stabilizing when the water level difference on both sides of the breach becomes smaller.

[0003] Current solutions for sealing river breaches typically involve placing sealing materials. For breaches that are wide and have high flow velocities, methods such as sinking ships or vehicles are sometimes used, but these methods are obviously costly, wasteful, and ineffective. For larger breaches, gabions are used as sealing materials. While gabions are inexpensive, their size is usually much smaller than the breach, requiring multiple gabions to be arranged into a wall to achieve a good seal. However, gabions cannot be pre-arranged into a wall and are placed individually, making them easily washed away by the high-speed water flow after being placed in the breach, resulting in poor sealing.

[0004] The applicant previously filed a patent, CN107447728B, which disclosed a method for emergency plugging of river breaches based on arrayed rocket-driven ground anchors. The specific steps are as follows: (1) Launch rocket anchors, and connect the anchor cables to fixed piles on the bank to form a "base point" at the breach; (2) Quickly form a "pillar" for breach plugging by sliding the rocket anchor cables into a steel mesh gabion group; (3) Utilize the anchoring array to slide the steel mesh gabions into a group, forming an "expansion body" for breach plugging. This invention utilizes laser-guided precise arraying and, with the help of induction-triggered expansion anchors, "first rooting at a single point, then expanding into a group," quickly forming a preset anchor array at the breach, which can improve the fixing effect of the gabions. However, although this method allows for the deployment of gabions in strings along the anchor cables, the gabions are still deployed perpendicular to the embankment. During deployment, an effective seal cannot be immediately formed along the entire width of the breach. After deployment, the entire sealing structure remains composed of separate units along the width of the breach, failing to achieve overall sealing strength. Therefore, both during the deployment of gabions and after the sealing structure is formed, the gabions remain susceptible to being disrupted or washed away by high-speed water flow, resulting in poor sealing effectiveness.

[0005] To address the aforementioned issues, the applicant devised a river breach sealing structure that utilizes a pipe with a length greater than the breach width for sealing, and filed a patent application on the same day. This approach would significantly improve its reliability, stability, and construction efficiency.

[0006] However, when the breach in a river channel is long, the required pipeline becomes too long to construct. Therefore, further consideration is needed on how to find a way to quickly and efficiently seal the breach using pipelines when the breach is long. Summary of the Invention

[0007] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is: how to provide a water flow force self-expanding method for sealing river breaches that can quickly and reliably complete the sealing of breaches even when the breach is long.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0009] A method for sealing a river breach by self-expanding water flow force is characterized by deploying a multi-section, retractable sleeve-type sealing pipe from the upstream bank of the breach into the river channel in the direction of water flow. The upper end of the sealing pipe is fixed to the upstream end of the breach, allowing the sealing pipe to be impacted by the river water in the river channel, causing each sleeve section to expand on its own. The last sleeve section extends beyond the breach position to the downstream end of the breach and is confined to the inner sidewall of the bank at both ends of the breach by the impact of the outflowing water at the breach, thus sealing the breach.

[0010] Therefore, by using a pull-out multi-section sleeve-type pipe structure for sealing, which allows the pipe to unfold automatically under the impact of water flow and complete the breach sealing, the defect that construction is impossible when the river breach is long (greater than 15 meters) can be effectively solved, and the breach sealing construction can be completed quickly and reliably.

[0011] Furthermore, this method includes the following steps: a) First, the foundation pile array at the bottom of the river channel at both ends of the breach is fixedly set up. At the upstream end of the foundation pile array, an anchor cable is fixedly connected to the end of each foundation pile to the embankment; b) Obtain a multi-section sleeve-type sealing pipe with a pull-out structure and deploy it. When deploying, at the upstream end of the breach, the loop at the beginning of the first section of the sealing pipe is positioned by passing through the anchor cable, so that the sealing pipe is lowered into the river water in the direction of water flow; c) After the sealing pipe is deployed into the river water, the impact of the river water drives each sleeve section to unfold and extend on its own and reach the inner side of the embankment at the downstream end of the breach through the breach location. In this way, the sealing pipe is lowered into the river channel by deploying a vertical row of sealing pipes between each two adjacent anchor cables until the sealing wall is laid and the breach is blocked.

[0012] In this way, using multiple sealing pipes to form a sealing wall can better improve the strength of the sealing structure. The design of the foundation piles not only facilitates the positioning of the sealing pipes and increases the width of the sealing structure, but also allows some of the impact force of the breach to be transferred downstream to the riverbed, reducing the pressure on the embankment and better preventing the breach from expanding. This improves the stability and reliability of the sealing.

[0013] Furthermore, during the laying of the sealing pipes, the first sealing pipe, which is attached to the side of the embankment, is laid first. Then, while laying the vertical steel pipes attached to the side of the embankment, the horizontal steel pipes are gradually laid towards the far side of the embankment. This ensures that the vertical cross-section of the sealing wall is always arranged in a similar triangular pattern during the laying process.

[0014] This can better improve the stability of the laying process.

[0015] Furthermore, the inner cavities of the sealing pipe are connected at both ends.

[0016] In this way, the sealing pipe has a hollow structure, making it lighter than a gabion, reducing the difficulty of placement and improving sealing efficiency. Moreover, the sealing pipe is arranged in the direction of the river flow, allowing the downstream river water to pass through the inside of the pipe, greatly reducing the impact of the downstream river water on the pipe and improving the stability of the sealing structure.

[0017] Furthermore, the sealing pipe is a circular pipe.

[0018] In this way, the river water rushing out from the breach impacts laterally along the pipeline. Since the pipeline's cross-section is circular, the impact force of the river water on the pipeline can be reduced to the maximum extent, improving the stability of the blockage. In particular, it greatly improves the stability of the blockage pipeline during the deployment process and in the initial stage of deployment, avoiding the defect that the blockage device is easily washed away by the river water during deployment.

[0019] Furthermore, in the pile array, each row of piles from the near shore to the far shore is spaced apart by a distance equal to the diameter of the sealing pipe, and the diameter of the upper end of the pile is smaller than the diameter of the sealing pipe.

[0020] In this way, the bottom row or multiple rows of sealing pipes can be clamped between each row of foundation piles until the upper surface of the sealing pipes exceeds the upper surface of the foundation piles. Then, the next row of sealing pipes can be easily clamped into the interval of the lower sealing pipes, and they are stacked upwards in sequence to form a sealing wall, which can better improve stability.

[0021] Furthermore, the pile arrays at both ends of the breach are symmetrically arranged, with the side of the pile array on the bank connecting to the embankment, and the side on the far bank forming a stepped shape with a wider width closer to the breach.

[0022] In this way, even during the sealing process, as the breach is gradually expanded by the long-term impact of the river water, the overall stability of the structure can still be well guaranteed.

[0023] Furthermore, the side of the pile array facing the shore is separated from the embankment by a distance equal to the diameter of the sealing pipe.

[0024] This facilitates the connection of the first sealing steel pipe along the inner side of the embankment to the pile array and the embankment, and based on this, the sealing wall can be gradually laid.

[0025] Furthermore, the length of the sealing pipe on the far shore side is greater than the width of the breach but less than the length of the sealing pipe on the near shore side.

[0026] This allows for a better reduction in the weight of the sealing wall and the lateral pressure on the embankment, while also enabling better coordination with the stepped pile array.

[0027] Furthermore, this method relies on a self-deploying breach sealing device, which includes foundation piles for forming a pile array. The foundation piles include conventional foundation piles and end foundation piles. At least one anchor cable is fixedly connected to the tail of the end foundation pile. The device also includes a sealing pipe with a deployment length greater than the breach width. The sealing pipe is a pull-out multi-section sleeve-type pipe. The first section of the sealing pipe has a through-ring fixed at its starting end. The through-ring is slidably fitted onto the corresponding anchor cable. The last section of the sealing pipe also has water-blocking guide plates installed in its inner cavity. The water-blocking guide plates are multiple plates that are evenly distributed circumferentially and spirally arranged inside the pipe.

[0028] In this way, during the sealing process, after the sealing pipe is deployed upstream of the breach, the water-blocking guide plates can withstand the impact force of the water flow, causing the sleeve-type sealing pipe to gradually extend and unfold. Therefore, it can better rely on the impact force of the river water itself to achieve the self-deployment and deployment of the pull-out pipe structure, conveniently, quickly, and efficiently sealing large breaches in river channels, ensuring the reliability and stability of the sealing process. The water-blocking guide plates are designed in a spiral shape, so that each sleeve section is subjected to a spiral tension, making it easier to unfold. Furthermore, after the final pipe section unfolds in a spiral direction, it allows the spring-loaded connecting pieces to better engage and fix together as a whole.

[0029] Furthermore, the foundation pile is constructed by inserting the lower end of a drilling anchor, which has a pointed tip, into the bottom of the riverbed.

[0030] This structure is simple and reliably fixed. During implementation, it can be launched from the embankment using a catapult device and drilled into the riverbed. Alternatively, the foundation piles can also utilize the same structure as those in the applicant's previous patent applications CN107447728B - A Method for Emergency Blocking of River Breaches Based on Array Rocket Drilling Anchors and CN107587507A - Rocket Drilling Anchors. Other anchoring devices that are convenient for fixing to the riverbed can also be used.

[0031] Furthermore, the lower end of the drilling anchor has a triangular needle-shaped tip, and the anchor rod surface has three spirally arranged edges. This allows for better drilling into the riverbed bottom, improving sealing efficiency.

[0032] Furthermore, a connecting spring is provided on the outer surface of the last section of the sealing pipe. The connecting spring is a long strip along the length of the pipe. One end of the connecting spring is fixedly connected to the sealing pipe, and the other end is provided with a barb that extends outward at an angle when no force is applied. This distance is greater than the radius difference between the last section of the pipe and the first section of the pipe.

[0033] This design of the connecting spring creates friction between it and the penultimate pipe section, allowing the last pipe section to be pulled out last during the pipe extension process. Simultaneously, the connecting spring automatically pops out after the last pipe section is pulled out, facilitating interlocking between the popped-out connecting springs and the connecting springs at the ends of adjacent pipe sections. This avoids the drawback of a sleeve-type pipe design where the reduced radius at the end leads to increased gaps between pipes, making them prone to loosening and swaying, thus affecting stability. The connecting springs securely connect the ends of all pipe sections into a single unit, significantly improving the overall stability and reliability of the sealing wall.

[0034] Furthermore, when the connecting spring is in a stress-free state after being ejected, the barb has an outward twisting angle. This makes it easier to use the barb of the ejected connecting spring to achieve the connection and fixation between adjacent sealing pipes.

[0035] Furthermore, the upstream end of the connecting spring and the end section of the sealing pipe are fixed. This facilitates the retraction and recovery of the pulled-out sealing pipe.

[0036] Furthermore, the connecting spring is formed by cutting directly onto the pipe. This makes manufacturing easier and results in better overall structural integrity.

[0037] In summary, this invention is suitable for situations involving long river breaches and can quickly and reliably seal large breaches. It offers advantages such as high efficiency, stability, and reliability in the sealing process. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the side view of the river breach sealing structure formed after the implementation of the method of the present invention.

[0039] Figure 2 This is a top view of the individual pile array and the bottommost sealing pipe during the implementation of the method of the present invention.

[0040] Figure 3 This is a schematic diagram of the drilling anchor used as a foundation pile in the self-expanding breach sealing device of this invention.

[0041] Figure 4 for Figure 3 Top view.

[0042] Figure 5 This is a schematic diagram of the method of the present invention during the construction process.

[0043] Figure 6 This is a schematic diagram of the method of the present invention after construction is completed.

[0044] Figure 7 This is a schematic diagram of the structure of a single-pipe sealing device used in a self-expanding breach sealing system.

[0045] Figure 8 for Figure 7 Side view. Detailed Implementation

[0046] The present invention will now be described in further detail with reference to the accompanying drawings.

[0047] Implementation method: A method for sealing a river breach by self-expanding water flow force, characterized in that a multi-section sleeve-type sealing pipe with retractable structure is deployed from the upstream bank of the breach into the river channel in the direction of water flow. The upper end of the sealing pipe is fixed to the upstream end of the breach, so that the sealing pipe is subjected to the impact of river water in the river channel, causing each sleeve to unfold on its own. The last sleeve exceeds the position of the breach and reaches the downstream end of the breach. It is then subjected to the impact of the water flow released from the breach and can be confined to the inner side wall of the bank at both ends of the breach, thereby achieving breach sealing.

[0048] Therefore, by using a pull-out multi-section sleeve-type pipe structure for sealing, which allows the pipe to unfold automatically under the impact of water flow, the defect that construction is impossible when the river breach is long (greater than 15 meters) can be effectively solved, and the breach sealing construction can be completed quickly and reliably.

[0049] Specifically, this method includes the following steps: a) First, the foundation pile array at the bottom of the riverbed at both ends of the breach is fixedly set up. At the upstream end of the foundation pile array, an anchor cable is fixedly connected to the end of each foundation pile to the embankment. b) Obtain a multi-section sleeve-type sealing pipe with a pull-out structure and deploy it. When deploying, at the upstream end of the breach, the loop at the beginning of the first section of the sealing pipe is passed through the anchor cable for positioning, so that the sealing pipe is lowered into the river water in the direction of water flow. c) After the sealing pipe is deployed into the river water, the impact of the river water will cause each sleeve section to unfold and extend on its own and reach the inner side of the embankment at the downstream end of the breach through the breach location. In this way, the sealing pipe is lowered into the river water by deploying a vertical row of sealing pipes between every two adjacent anchor cables until the sealing wall is laid and the breach is blocked.

[0050] In this way, using multiple sealing pipes to form a sealing wall can better improve the strength of the sealing structure. The design of the foundation piles not only facilitates the positioning of the sealing pipes and increases the width of the sealing structure, but also allows some of the impact force of the breach to be transferred downstream to the riverbed, reducing the pressure on the embankment and better preventing the breach from expanding. This improves the stability and reliability of the sealing.

[0051] During the laying of the sealing pipes, the first sealing pipe, which is attached to the side of the embankment, is laid first. Then, while laying the vertical steel pipes attached to the side of the embankment, the horizontal steel pipes are gradually laid towards the far side of the embankment. This ensures that the vertical cross-section of the sealing wall is always arranged in a similar triangular pattern during the laying process.

[0052] This can better improve the stability of the laying process.

[0053] Figure 1-2 The invention demonstrates a river breach sealing structure formed after the implementation of the method of the present invention (the applicant has filed a patent application for this sealing structure on the same day for separate protection). It includes a pile array 1 fixed to the bottom of the river channel at both ends of the breach on the embankment 7, and a sealing wall 2 formed above the pile array. A sealing pipe 3 is also interlocked between the two pile arrays 1, and the sealing pipe 3 is laid in multiple layers from bottom to top and stacked to form the sealing wall 2. The pile array 1 is composed of piles 4 arranged in an array.

[0054] In this way, a sealing wall is formed using sealing pipes longer than the width of the breach. The bottom of the sealing wall is fixed by an array of foundation piles, while the outer side of the sealing wall can directly contact the sides of the embankment on both sides of the breach. Even if the wall is washed away, each sealing pipe can still be intercepted by the embankment under the impact of the water flow and stick tightly to the side of the embankment, without reducing the flow obstruction and sealing effect. Therefore, the reliability and stability of the sealing effect are greatly improved.

[0055] The sealing pipe 3 has its inner cavity connected at both ends.

[0056] In this way, the sealing pipe has a hollow structure, making it lighter than a gabion, reducing the difficulty of placement and improving sealing efficiency. Moreover, the sealing pipe is arranged in the direction of the river flow, allowing the downstream river water to pass through the inside of the pipe, greatly reducing the impact of the downstream river water on the pipe and improving the stability of the sealing structure.

[0057] The sealing pipe 3 is a circular pipe.

[0058] In this way, the river water rushing out from the breach impacts laterally along the pipeline. Since the pipeline's cross-section is circular, the impact force of the river water on the pipeline can be reduced to the maximum extent, improving the stability of the blockage. In particular, it greatly improves the stability of the blockage pipeline during the deployment process and in the initial stage of deployment, avoiding the defect that the blockage device is easily washed away by the river water during deployment.

[0059] Among them, the width of the sealing pipes laid perpendicular to the embankment gradually decreases from bottom to top.

[0060] This can better improve the overall stability of the sealing wall.

[0061] In the pile array 1, each row of piles from the near shore to the far shore is spaced one diameter apart from the sealing pipe, and the diameter of the upper end of the pile is smaller than the diameter of the sealing pipe.

[0062] In this way, the bottom row or multiple rows of sealing pipes can be clamped between each row of foundation piles until the upper surface of the sealing pipes exceeds the upper surface of the foundation piles. Then, the next row of sealing pipes can be easily clamped into the interval of the lower sealing pipes, and they are stacked upwards in sequence to form a sealing wall, which can better improve stability.

[0063] Among them, the pile arrays 1 at both ends of the breach are symmetrically arranged, and the side of the pile array on the bank is connected to the embankment, while the side on the far bank is in a stepped shape with a wider width closer to the breach.

[0064] In this way, even during the sealing process, as the breach is gradually expanded by the long-term impact of the river water, the overall stability of the structure can still be well guaranteed.

[0065] Among them, the side of the pile array 1 facing the shore is separated from the embankment by a distance equal to the diameter of the sealing pipe.

[0066] This facilitates the connection of the first sealing steel pipe along the inner side of the embankment to the pile array and the embankment, and based on this, the sealing wall can be gradually laid.

[0067] Among them, the length of the sealing pipe 3 on the far shore side is greater than the width of the breach but less than the length of the sealing pipe on the near shore side.

[0068] This allows for a better reduction in the weight of the sealing wall and the lateral pressure on the embankment, while also enabling better coordination with the stepped pile array.

[0069] For implementation, see Figure 1-8 This method relies on a self-expanding breach sealing device, which includes foundation piles 4 for forming a foundation pile array. The foundation piles 4 include conventional foundation piles and end foundation piles. At least one anchor cable 5 is fixedly connected to the tail of the end foundation pile. It also includes a sealing pipe 3 with an unfolded length greater than the width of the breach. The sealing pipe 3 is a pull-out multi-section sleeve pipe. The first section of the sealing pipe has a through ring 6 fixed at its starting end. The through ring 6 can be slidably fitted onto the corresponding anchor cable 5. The last section of the sealing pipe also has a water-blocking guide plate 11 in its inner cavity. The water-blocking guide plate 11 is a plurality of pipes evenly distributed circumferentially and spirally arranged inside the pipe.

[0070] In this way, during the sealing process, after the sealing pipe is deployed upstream of the breach, the water-blocking guide plates can withstand the impact force of the water flow, causing the sleeve-type sealing pipe to gradually extend and unfold. Therefore, it can better rely on the impact force of the river water itself to achieve the self-deployment and deployment of the pull-out pipe structure, conveniently, quickly, and efficiently sealing large breaches in river channels, ensuring the reliability and stability of the sealing process. The water-blocking guide plates are designed in a spiral shape, so that each sleeve section is subjected to a spiral tension, making it easier to unfold. Furthermore, after the final pipe section unfolds in a spiral direction, it allows the spring-loaded connecting pieces to better engage and fix together as a whole.

[0071] Among them, pile 4 is formed by inserting the lower end of a drilling anchor with a pointed tip into the bottom of the riverbed.

[0072] This structure is simple and reliable, and during implementation, it can be launched from the embankment and drilled into the riverbed using a catapult device. In another embodiment, the foundation pile can also be implemented using the same structure as those in the applicant's previous patent applications CN107447728B - A Method for Emergency Blocking of River Breach Based on Array Rocket Drilling Anchors and CN107587507A - Rocket Drilling Anchors. Other anchoring devices that are convenient for fixing to the riverbed bottom can also be used.

[0073] The lower end of the drilling anchor has a triangular needle-shaped tip, and the anchor rod surface has three spirally arranged edges. This allows for better drilling into the riverbed bottom, improving sealing efficiency.

[0074] Among them, the outer surface of the last section of the sealing pipe is provided with a connecting spring 10. The connecting spring 10 is a long strip along the length of the pipe. One end of the connecting spring 10 is fixedly connected to the sealing pipe, and the other end is provided with a barb. When no force is applied, the whole section extends outward at an angle for a distance greater than the radius difference between the last section of the pipe and the first section of the pipe.

[0075] This design of the connecting spring creates friction between it and the penultimate pipe section, allowing the last pipe section to be pulled out last during the pipe extension process. Simultaneously, the connecting spring automatically pops out after the last pipe section is pulled out, facilitating interlocking between the popped-out connecting springs and the connecting springs at the ends of adjacent pipe sections. This avoids the drawback of a sleeve-type pipe design where the reduced radius at the end leads to increased gaps between pipes, making them prone to loosening and swaying, thus affecting stability. The connecting springs securely connect the ends of all pipe sections into a single unit, significantly improving the overall stability and reliability of the sealing wall.

[0076] When the connecting spring 10 is in a stress-free state after being ejected, the barb has an outward twisting angle. This makes it easier to connect and fix adjacent sealing pipes using the barb of the ejected connecting spring.

[0077] The upstream end of the connecting spring 10 is fixed to the end section of the sealing pipe. This facilitates the retraction and recovery of the pulled-out sealing pipe.

[0078] The connecting spring 10 is formed by cutting directly onto the pipe. This makes manufacturing easier and improves the overall structural integrity.

Claims

1. A method for sealing river breaches using water flow force self-expanding mechanism, characterized in that, A multi-section sleeve-type sealing pipe with a pull-out structure is deployed from the upstream bank of the breach into the river channel in the direction of water flow. The upper end of the sealing pipe is fixed to the upstream end of the breach. The sealing pipe is subjected to the impact of the river water in the river channel, causing each sleeve to unfold on its own. The last sleeve exceeds the position of the breach and reaches the downstream end of the breach. It is then subjected to the impact of the outflowing water at the breach and can be confined to the inner side wall of the bank at both ends of the breach, thus achieving the sealing of the breach. The process includes the following steps: a) First, the foundation pile array at the bottom of the riverbed at both ends of the breach is fixedly installed. At the upstream end of the foundation pile array, an anchor cable is fixedly connected to the end of each foundation pile to the embankment. b) A multi-section sleeve-type sealing pipe with a pull-out structure is obtained and deployed. The first section of the sealing pipe has a fixed loop at its starting end, which can be slidably fitted onto the corresponding anchor cable. During deployment, the loop at the starting end of the first section of the sealing pipe is passed through the anchor cable at the upstream end of the breach for positioning, so that the sealing pipe is lowered into the river water in the direction of water flow. c) After the sealing pipe is deployed into the river water, the impact of the river water causes each sleeve section to unfold and extend on its own and reach the inner side of the embankment at the downstream end of the breach through the breach location. In this way, the sealing pipe is lowered into the river water by deploying a vertical row of sealing pipes between each two adjacent anchor cables until the sealing wall is laid and the breach is blocked.

2. The method for sealing river breaches by self-expanding water flow force as described in claim 1, characterized in that, When laying the sealing pipes, first complete the laying of the first sealing pipe at the bottom layer that is attached to the side of the embankment, and then lay the vertical steel pipes that are attached to the side of the embankment upwards. At the same time, gradually lay the horizontal steel pipes towards the far side of the embankment, so that the vertical cross section of the sealing wall is always arranged in a similar triangular pattern during the laying process.

3. The method for sealing river breaches by self-expanding water flow force as described in claim 1, characterized in that, The sealing pipe has its inner cavity open at both ends; the sealing pipe is a circular pipe.

4. The method for sealing river breaches by self-expanding water flow force as described in claim 1, characterized in that, In the pile array, each row of piles from the near shore to the far shore is spaced apart by a distance equal to the diameter of the sealing pipe, and the diameter of the upper end of the pile is smaller than the diameter of the sealing pipe. The pile arrays at both ends of the breach are symmetrically arranged, and the side of the pile array on the bank side is connected to the bank, while the side on the far bank side is stepped. The stepped shape is wider near the breach. The distance between the side of the pile array facing the shore and the embankment is one diameter of the sealing pipe. The length of the sealing pipeline on the far shore side is greater than the width of the breach but less than the length of the sealing pipeline on the near shore side.

5. The method for sealing river breaches by self-expanding water flow force as described in claim 1, characterized in that, This method relies on a self-deploying breach sealing device, which includes foundation piles for forming a pile array. The foundation piles include conventional foundation piles and end foundation piles. At least one anchor cable is fixedly connected to the tail of the end foundation pile. The device also includes a sealing pipe with a deployment length greater than the breach width. The sealing pipe is a pull-out multi-section sleeve pipe. The inner cavity of the last section of the sealing pipe is also provided with water-blocking guide plates. The water-blocking guide plates are multiple ones that are evenly distributed circumferentially and spirally arranged inside the pipe.

6. The method for sealing river breaches by self-expanding water flow force as described in claim 5, characterized in that, The foundation pile is formed by inserting the bottom end of a drilled anchor, which is pointed at the bottom, into the bottom of the riverbed. The lower end of the drilling anchor has a triangular needle-shaped tip, and the surface of the anchor rod has three spirally arranged edges.

7. The method for sealing river breaches by self-expanding water flow force as described in claim 5, characterized in that, A connecting spring is installed on the outer surface of the last section of the sealing pipe. The connecting spring is a long strip along the length of the pipe. One end of the connecting spring is fixedly connected to the sealing pipe, and the other end is provided with a barb that extends outward at an angle when no force is applied. This distance is greater than the radius difference between the last section of the pipe and the first section of the pipe.

8. The method for sealing river breaches by self-expanding water flow force as described in claim 7, characterized in that, When the connecting spring is in a stress-free state after being ejected, the barb has an outward twisting angle.

9. The method for sealing river breaches by self-expanding water flow force as described in claim 7, characterized in that, The upstream end of the connecting spring is fixed to the end of the sealing pipe.

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