Device and method for rapidly blocking dam burst opening

Abstract

The invention discloses a device and method for rapidly blocking a dam burst opening. The device comprises steel pipe piles which are arranged on the positions, at the four corners of the burst opening, of a dam in a driving mode. The blocking net is laid at the outburst opening, and blocking objects are piled in the blocking net; the pulley block comprises a fixed pulley block and a movable pulley block, the fixed pulley block is fixed to the upper portion of the steel pipe pile, the movable pulley block is connected with the fixed pulley block through winding of an adjusting rope, one end of the adjusting rope is fixed to the fixed pulley block, and the other end of the adjusting rope is connected with a winch on a dam; one end of the Kevlar traction rope is connected with the movable pulley block, and the other end of the Kevlar traction rope is connected with the edge of the plugging net in a multi-point connection manner; the method comprises the steps of steel pipe pile driving, pulley block installation, pulley block and plugging net connection, plugging structure forming and the like. According to the method, the dam breach can be quickly and effectively blocked, more serious water and soil loss and dike instability are avoided, and meanwhile the complexity and time consumption of manual operation in a traditional blocking method are reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of water conservancy engineering, and in particular relates to a device and a method for quickly sealing a dam breach. Background Art

[0002] As an important part of water conservancy projects, dams play a key role in flood prevention and disaster relief. However, with the intensification of global climate change and the frequent occurrence of extreme weather events, the drastic fluctuations in river and lake water levels have made the safety of dams face greater challenges, especially dam breaches have become a major problem in dam safety management. If the dam breach is not sealed in a timely and effective manner, the breach will become larger and larger, causing serious floods and posing a serious threat to people's lives and property.

[0003] Existing dam breach blocking technologies include riprap blocking, wire cage stone blocking, pile driving, shipwreck blocking, and door closing. The riprap blocking, wire cage stone blocking, and shipwreck blocking methods use the weight of stones or ships filled with stones or sandbags to block the breach. However, the water flow at the breach of the dam is turbulent, and the weight of a single riprap or wire cage stone is not enough to resist the thrust generated by the water flow, and it is easy to be washed away by the water flow. It is not easy to complete the blocking in a short time, and there is a risk of the breach expanding. The shipwreck blocking method uses a large hull as a blocking object, which is costly. The hull will be affected by the lateral scouring force of the water flow. If it is not operated properly, there is a risk of capsizing. At the same time, the hull has a certain draft depth. Whether the hull can be used for blocking depends on the water level depth at the breach.

[0004] The existing breach plugging technology all adopts artificial riprap plugging, and after riprap, the plugging material relies on its own weight to plug the breach. There is no way to prevent the plugging material from being washed away by water flow, and it cannot be completely plugged at the thrown position as planned by the operator. Therefore, it is necessary to propose a device and a plugging method that can quickly plug the breach of the dam according to the operator's wishes to solve the problem of rapid plugging of the breach of the dam. Summary of the invention

[0005] The present invention provides a device and method for quickly plugging a dam breach, aiming to solve the problem in the prior art that plugging a dam breach takes a long time and is complicated to operate, but the plugging quality cannot be guaranteed.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A device for quickly sealing a breach in a dam, comprising steel pipe piles driven on the dam at the four corners of the breach;

[0008] The plugging net is laid at the breach and filled with plugging materials;

[0009] The pulley block includes a fixed pulley block and a movable pulley block, wherein the fixed pulley block is fixed on the upper part of the steel pipe pile, and the movable pulley block is connected to the fixed pulley block by winding an adjustment rope, wherein one end of the adjustment rope is fixed to the fixed pulley block, and the other end is connected to a winch fixed to the dam;

[0010] A Kevlar traction rope, one end of which is connected to the movable pulley block, and the other end of which is connected to the edge of the blocking net in a multi-point connection manner.

[0011] The steel pipe pile comprises an upper steel pipe pile section, a plurality of middle steel pipe pile sections and a lower steel pipe pile section which are threadedly connected in sequence. A threaded opening is arranged on the side of the upper steel pipe pile section, and a bolt for connecting the fixed pulley block is installed in the threaded opening.

[0012] The bottom of the lower section of the steel pipe pile is provided with a cone tip, and the side is provided with a spiral pressure-bearing plate.

[0013] The four sides of the blocking net adopt a double-layer suture reinforcement structure, and high-strength polyester fiber lines are used at the sutures. Kevlar ropes are embedded in the double-layer suture reinforcement structure.

[0014] A laser displacement sensor is arranged on the top of the steel pipe pile, and reflective plates as laser positioning marks are arranged on both sides of the blocking net in the water flow direction. The laser displacement sensor is connected to the automatic controller signal arranged on the dam.

[0015] A tension sensor is arranged between the Kevlar traction rope and the blocking net, and the tension sensor is connected to a controller signal arranged on the dam.

[0016] The controller is arranged on the embankments on both sides of the breach, and is respectively connected with the laser displacement sensor and the tension sensor on the same side, and controls the operation of the winch on the same side.

[0017] One or more upper sections of the steel pipe pile are provided, and each upper section of the steel pipe pile is connected to a fixed pulley block.

[0018] Another technical solution proposed by the present invention is: a method for quickly blocking a dam breach, the method using the device for quickly blocking a dam breach, comprising the following steps:

[0019] The first step is to select a matching plugging net according to the size and shape of the dam breach;

[0020] The second step is to assemble the steel pipe piles and drive them into the embankment at the four corners of the breach until the bottom of the piles reaches the hard, impermeable soil layer;

[0021] The third step is to install the fixed pulley block on the steel pipe pile, then fix one end of the adjustment rope on the bracket of the fixed pulley block, and connect the other end to the corresponding winch after passing through the movable pulley block and the fixed pulley block for several times;

[0022] The fourth step is to connect one end of the Kevlar traction rope to the bracket of the movable pulley block, and the other end is connected to the edge of the blocking net through a tension sensor in a multi-point connection manner;

[0023] The fifth step is to start the winch and lift the blocking net to a certain height at both ends of the water flow direction to ensure that the blocking net can cover the breach;

[0024] The sixth step is to pile up sealing materials in the sealing net to seal the breach.

[0025] Furthermore, in the sixth step, firstly, a waterproof bag filled with gravel is laid on the bottom of the sealing net to form a base layer; then sand bags are piled on the base layer. The sand bags should be placed in order from outside to inside and from low to high to form a multi-level sealing structure.

[0026] Specifically, a laser positioning mark is set at the upper end of the blocking net, which serves as the target of the laser displacement sensor. The laser displacement sensor continuously monitors the displacement of the target. After the sixth step operation or the blocking is completed, when the displacement of the target in the direction of the water flow exceeds a certain value, the laser displacement sensor sends the displacement signal to the automatic controller, controls the winch on the dam to start, tightens the blocking net, and ensures that the filled blocking material is stacked in the planned position as required. When the blocking material is tightened, the laser displacement sensor measures the position of the target and sends a signal to the automatic controller, and the automatic controller stops the winch.

[0027] Specifically, after performing the sixth step operation or completing the blocking, when the tension measured by the tension sensor is higher than a certain value, a winch start signal is sent through the automatic controller to release the Kevlar traction rope, reduce the force on the Kevlar traction rope, and stop the winch after the tension reaches a certain value; when the tension measured by the tension sensor is lower than a certain value, a winch start signal is sent through the automatic controller to tighten the Kevlar traction rope, increase the force on the Kevlar traction rope, and stop the winch after the tension reaches a certain value.

[0028] The beneficial effects achieved by the present invention are: 1. The method and device of the present invention are simple in design and construction steps. By reasonably configuring the pulley block and steel pipe piles, the blocking work can be completed quickly, which greatly shortens the time for emergency disposal and is suitable for dealing with sudden dam breach disasters.

[0029] 2. The present invention reduces the damage to the on-site environment in traditional containment methods. No large-scale earthwork is required during the construction process, and the device is reusable, which reduces the impact on the environment and helps to achieve sustainable dam management.

[0030] 3. The present invention can adapt to pipe bursts of different sizes and various complex geological conditions. The design of the movable pulley block enables the plugging device to adapt to different water flow intensities and terrain changes, and has wide applicability and strong environmental adaptability.

[0031] 4. The present invention uses a laser displacement sensor to monitor the displacement of the multifunctional net in real time and automatically controls the start and stop of the winch, thereby ensuring the effective effect of the breach plugging material.

[0032] 5. The materials such as the net and pulley block used in the present invention have a high cost-effectiveness ratio, and the design is easy to install and disassemble, which reduces the cost of materials and equipment for emergency disposal and has a high economic benefit. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0034] Figure 1 It is a schematic diagram of the overall structure of a device for rapidly sealing a dam breach according to the present invention;

[0035] Figure 2 It is a schematic plan view of a device for rapidly sealing a dam breach according to the present invention;

[0036] Figure 3 It is a structural explosion diagram of the steel pipe pile described in the present invention;

[0037] Figure 4 for Figure 1 A is an enlarged schematic diagram;

[0038] Figure 5 It is a structural schematic diagram of the connecting component in the present invention;

[0039] Figure 6 This is a schematic diagram of the connection between the blocking net and the Kevlar traction rope of the present invention;.

[0040] In the figure: 11, steel pipe pile, 12, Kevlar traction rope, 13, embankment, 14, blocking net, 21, winch, 22, steel pipe pile fixing position, 23, direction of water flow, 24, automatic controller, 31, upper section of steel pipe pile, 32, middle section of steel pipe pile, 33, lower section of steel pipe pile, 34, threaded mouth, 35, spiral pressure plate, 36, laser displacement sensor, 41, fixed pulley block, 42, movable pulley block, 43, adjustment rope, 44, fixed pulley fixing ring, 51, bolt, 61, tension sensor, 62, reflector. DETAILED DESCRIPTION

[0041] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0042] Example 1

[0043] A device for quickly blocking dam breaches comprises a steel pipe pile 11, a blocking net 14, a fixed pulley block 41, a movable pulley block 42, a winch 21 and a data acquisition system 24.

[0044] The steel pipe pile 11 is used to be driven at the four corners of the dam breach. The steel pipe pile 11 is provided with a pulley block, including a fixed pulley block 41 and a movable pulley block 42 used in conjunction with each other. The fixed pulley block 41 and the movable pulley block 42 have the same number of pulleys. The blocking net 14 is used to be laid at the dam breach. Waterproof bags, sand bags or filling blocks are stacked in the blocking net 14 to block the dam breach. The four corners of the blocking net 14 are connected to the Kevlar traction rope 12, and the Kevlar traction rope 12 is connected to the movable pulley block 42. An adjustment rope 43 for adjusting the blocking net 14 is wound between the fixed pulley block 41 and the movable pulley block 42. One end of the adjustment rope 43 is connected to the fixed pulley block 41, and the other end is connected to the winch 21. The winch 21 retracts and releases the adjustment rope 43 to adjust the position of the movable pulley block 42, thereby achieving the pulling of the blocking net 14 and adjusting the position of the blocking net 14.

[0045] Specifically, the structure of the steel pipe pile 11 is as follows: Figure 3 As shown, the steel pipe pile 11 adopts a three-section structure, including an upper section 31 of the steel pipe pile, a middle section 32 of the steel pipe pile and a lower section 33 of the steel pipe pile. The lower end of the upper section 31 of the steel pipe pile is provided with an internal thread, and the side of the upper end is provided with a laser displacement sensor 36. The side of the upper section 31 of the steel pipe pile is also provided with a threaded hole 34 for installing a fixed pulley block. The middle section 32 of the steel pipe pile requires at least one section, and the upper end of the middle section 32 of the steel pipe pile is provided with an external thread, and the lower end is provided with an internal thread. The upper end of the lower section 33 of the steel pipe pile is provided with an external thread, and the lower end is provided with a cone tip, and a spiral pressure plate 35 is provided on the side. The upper section 31 of the steel pipe pile, the middle section 32 of the steel pipe pile and the lower section 33 of the steel pipe pile are all connected by matching threads of internal threads and external threads. The conical tip at the lower end of the steel pipe pile lower section 33 facilitates driving into the soil layer. The spiral pressure plate 35 not only improves the efficiency of pile driving, but also enhances its bearing capacity and stability, and adapts to complex geological conditions.

[0046] The steel pipe pile 11 is made of galvanized steel pipe, which has good corrosion resistance and long service life, has a diameter of 20 cm and a wall thickness of 5 mm to 10 mm.

[0047] Before driving the steel pipe pile 11, a suitable number of steel pipe pile middle sections 32 are selected as needed, and connected with the steel pipe pile upper section 31 and the steel pipe pile lower section 33 by threading to form an integral steel pipe pile structure. During driving, the assembled steel pipe pile 11 is driven into the ground by hydraulic piling equipment or vibrating piling equipment until the bottom of the pile reaches a hard, impermeable soil layer to ensure the stability and pull-out resistance of the steel pipe pile.

[0048] Specifically, Figure 1 , 6 As shown, the main material of the blocking net 14 is high-strength polyester fiber, which has good tensile strength and wear resistance and is not easy to break under high-pressure water flow and strong tension. The four sides of the blocking net 14 are double-layered and reinforced, and high-strength polyester fiber lines are used at the stitching.

[0049] Preferably, the edge of the blocking net 14 is embedded with a steel wire rope, which can effectively disperse the tension and prevent local excessive stress.

[0050] Preferably, a reflective plate 62 is also provided on the blocking net 14 as a laser positioning mark, which is used in conjunction with the laser displacement sensor 36 to determine the displacement of the blocking net 14. When the blocking net 14 is laid at the breach of the dam, one side of the blocking net 14 on the water-facing surface and one side of the blocking net 14 on the water-receiving surface are pulled up, so the reflective plate 62 is provided at the upper end of the blocking net 14.

[0051] When the blocking net 14 is in use, its size should be larger than the width of the breach, for example, at least 1.5 times the width of the breach, and the mesh size of the blocking net 14 is 2 cm×2 cm.

[0052] Specifically, Figure 3 , 4 As shown, the fixed pulley block 41 is fixed to the upper section 31 of the steel pipe pile by a connecting component, and the fixed pulley block 41 can rotate on the steel pipe pile 11. The connecting component is a bolt 51 with a bolt fixing ring at one end, and the bolt 51 is installed in the threaded hole 34 of the upper section 31 of the steel pipe pile. The fixed pulley block 41 is provided with a fixed pulley fixing ring, and the fixed pulley fixing ring is connected to the bolt fixing ring of the bolt 51 to realize the connection of the fixed pulley block 41 on the steel pipe pile 11. Since it is a connection between two fixing rings, the fixed pulley block 41 can also rotate on the steel pipe pile 11. The movable pulley block 42 is connected to the fixed pulley block 41 by winding an adjusting rope 43. One end of the adjusting rope 43 is fixed to the bracket of the fixed pulley block 41, and the other end is connected to the winch 21 after being wound around the movable pulley block 42 and the fixed pulley block 41 for multiple times. The winch 21 needs to be placed in a safe area and have sufficient traction to ensure that the blocking net 14 can be accurately pulled and positioned.

[0053] Preferably, the adjustment rope 43 needs to have high strength and corrosion resistance, and it is recommended to use a rope made of Kevlar material.

[0054] For example Figure 1 , 6 As shown, one end of the Kevlar traction rope 12 is fixed to the bracket of the movable pulley group 42 through a fixing buckle, and the other end is connected to the blocking net 14. Moreover, the Kevlar traction rope 12 is connected to the edge of the blocking net 14 through a multi-point connection method, thereby being able to effectively disperse the tension applied to the net and prevent the water flow from generating excessive lateral impact force on the stacked objects and washing the stacked objects away.

[0055] Preferably, a tension sensor 61 is also connected between the Kevlar traction rope 12 and the blocking net 14 to continuously monitor the water pressure and soil stability in the blocking area, and the tension of the blocking net is appropriately adjusted by monitoring the tension of the Kevlar traction rope 12 and automatically controlling the start and stop of the winch.

[0056] Furthermore, the upper section of the steel pipe pile can be arranged in multiple pieces, and the pulley block is installed on each upper section of the steel pipe pile.

[0057] like Figure 1 , 2 As shown, when the device is used, each steel pipe pile 11 is equipped with a winch 21 according to the number of pulley blocks, and each winch 21 is connected to a pulley block; automatic controllers 24 are also provided on both sides of the dam breach, and the automatic controller 24 can receive signals from the tension sensor 61 and the laser displacement sensor 36 on the same side, and send control signals to the winch 21. For example: in the process of using the laser displacement sensor 36 to monitor the position of the plugging net 14 in real time, if the plugging net 14 has a large displacement, the automatic controller 24 starts the winch 21 to provide a larger pulling force, and timely adjusts the position of the plugging net 14 to avoid excessive displacement of the plugging net 14 after the plugging objects are stacked, thereby ensuring the plugging effect.

[0058] Preferably, the orientation of the fixed pulley block 41 on the steel pipe pile 11 needs to form a certain angle with the direction of the water flow so as to better withstand the impact of the water flow.

[0059] Example 2

[0060] A method for quickly sealing a dam breach, the method using the device for quickly sealing a dam breach described in Example 1, comprising the following steps:

[0061] The first step is to select a matching plugging net 14 according to the size and shape of the breach opening of the dam;

[0062] The second step is to select a suitable number of steel pipe pile middle sections 32 according to the height of the dam 13 and the stability of the surrounding soil layer, and thread them together with the steel pipe pile upper sections 31 and the steel pipe pile lower sections 33 to form a steel pipe pile structure; then, the assembled steel pipe piles 11 are driven at the four corners of the breach at a distance of 1.0m from the breach, and the steel pipe piles 11 are driven vertically into the ground using hydraulic piling equipment or vibrating piling equipment until the bottom of the pile reaches a hard, impermeable soil layer to ensure the stability and pull-out resistance of the pile;

[0063] The third step is to install the fixed pulley block 41 on the upper section 31 of the steel pipe pile through the bolts 51, and ensure that the fixed pulley block 41 and the movable pulley block 42 are on the same vertical plane to reduce the friction and deviation of the pulley system; then fix one end of the adjustment rope 43 to the bracket of the fixed pulley block 41, and connect the other end to the corresponding winch 21 after passing through the movable pulley block 42 and the fixed pulley block 41 for several times;

[0064] Step 4: Connect one end of the Kevlar traction rope 12 to the bracket of the movable pulley block 42, and connect the other end to the edge of the blocking net 14 through the tension sensor 61 in a multi-point connection manner;

[0065] Step 5: Start the winch 21 to lift the blocking net 14 to a certain height at both ends of the water flow direction to ensure that the blocking net 14 can cover the breach;

[0066] The sixth step is to lay waterproof bags filled with gravel on the bottom layer of the blocking net 14. These bags can quickly settle in the water and form a stable base layer. After the waterproof bags are laid, ordinary sand bags are stacked layer by layer. The sand bags should be placed in order from outside to inside and from low to high to form a multi-level blocking structure to ensure the stability and durability of the blocking effect.

[0067] When the sixth step is performed or the sandbags are stacked after the plugging is completed, they will be subjected to the increasing water flow force, causing the plugging net 14 to have an excessive lateral displacement. The laser displacement sensor 36 monitors the displacement of the reflector 62 in real time. When the displacement is too large, a signal will be sent to the automatic controller 24 to start the winch 21 to tighten the plugging net 14 to ensure that the sandbags do not have excessive lateral displacement. After the plugging net 14 is tightened, the displacement of the reflector 62 decreases. After monitoring, the laser displacement sensor 36 sends a signal to the automatic controller 24 to stop the winch 21.

[0068] When using sandbags for plugging, the sandbags should be evenly stacked to avoid plugging failure caused by uneven stacking. Sandbags can be made of waterproof or permeable materials, depending on the actual situation. After the plugging is completed, the water pressure and soil stability of the plugging area should be continuously monitored through the tension sensor, and the tension of the plugging net can be appropriately adjusted through the winch when necessary.

[0069] During the monitoring process of the tension sensor, when the tension measured by the tension sensor is higher than a certain value, a winch start signal is sent through the automatic controller to release the Kevlar traction rope 12, reduce the force on the Kevlar traction rope 12, and stop the winch after the tension reaches a certain value; when the tension measured by the tension sensor is lower than a certain value, a winch start signal is sent through the automatic controller to tighten the Kevlar traction rope 12, increase the force on the Kevlar traction rope 12, and stop the winch after the tension reaches a certain value.

[0070] Through the above steps, the device can quickly and effectively block the pipe burst or breach of the dam, avoiding more serious soil erosion and embankment instability, while reducing the complexity and time consumption of manual operations in traditional blocking methods.

[0071] It should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein by equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention. The terms used in the description of this application are only for describing specific implementations, and are not intended to limit the exemplary implementations according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and devices known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and devices should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0072] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0073] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

Claims

1. A device for quickly sealing a dam breach, characterized in that: It includes steel pipe piles, which are driven into the embankment at the four corners of the breach; The plugging net is laid at the breach and filled with plugging materials; The pulley block includes a fixed pulley block and a movable pulley block, wherein the fixed pulley block is fixed on the upper part of the steel pipe pile, and the movable pulley block is connected to the fixed pulley block by winding an adjustment rope, wherein one end of the adjustment rope is fixed to the fixed pulley block, and the other end is connected to a winch fixed to the dam; A Kevlar traction rope, one end of which is connected to the movable pulley block, and the other end of which is connected to the edge of the blocking net in a multi-point connection manner.

2. The device for rapidly sealing a dam breach according to claim 1, characterized in that: The steel pipe pile comprises an upper steel pipe pile section, a plurality of middle steel pipe pile sections and a lower steel pipe pile section which are threadedly connected in sequence. A threaded opening is arranged on the side of the upper steel pipe pile section, and a bolt for connecting the fixed pulley block is installed in the threaded opening.

3. The device for rapidly sealing a dam breach according to claim 2, characterized in that: The bottom of the lower section of the steel pipe pile is provided with a cone tip, and the side is provided with a spiral pressure-bearing plate.

4. The device for rapidly sealing a dam breach according to claim 1, characterized in that: The four sides of the blocking net adopt a double-layer suture reinforcement structure, and high-strength polyester fiber lines are used at the sutures, and steel wire ropes are embedded in the double-layer suture reinforcement structure.

5. The device for rapidly sealing a dam breach according to claim 1, characterized in that: A laser displacement sensor is arranged on the top of the steel pipe pile, a reflector plate as a laser positioning mark is arranged on the upper edge of the blocking net in the direction of water flow, and the laser displacement sensor is connected to the signal of an automatic controller arranged on the dam.

6. The device for rapidly sealing a dam breach according to claim 5, characterized in that: A tension sensor is arranged between the Kevlar traction rope and the blocking net, and the tension sensor is connected to a signal of an automatic controller arranged on the dam.

7. The device for rapidly sealing a dam breach according to claim 6, characterized in that: The automatic controller is arranged on the embankments on both sides of the breach, and is respectively connected with the laser displacement sensor and the tension sensor on the same side, and controls the operation of the winch on the same side.

8. The device for rapidly sealing a dam breach according to claim 1, characterized in that: One or more upper sections of the steel pipe pile are provided, and each upper section of the steel pipe pile is connected to a fixed pulley block.

9. A method for rapidly plugging a dam breach, the method using the device for rapidly plugging a dam breach according to claims 1 to 8, characterized in that: The steps include: The first step is to select a matching plugging net according to the size and shape of the dam breach; The second step is to assemble the steel pipe piles and drive them into the embankment at the four corners of the breach until the bottom of the piles reaches the hard, impermeable soil layer; The third step is to install the fixed pulley block on the steel pipe pile, then fix one end of the adjustment rope on the bracket of the fixed pulley block, and connect the other end to the corresponding winch after passing through the movable pulley block and the fixed pulley block for several times; The fourth step is to connect one end of the Kevlar traction rope to the bracket of the movable pulley block, and the other end is connected to the edge of the blocking net through a tension sensor in a multi-point connection manner; The fifth step is to start the winch and lift the blocking net to a certain height at both ends of the water flow direction to ensure that the blocking net can cover the breach; Step 6: Pile up plugging materials in the plugging net to plug the breach; A laser positioning mark is set at the upper end of the plugging net as the target of the laser displacement sensor. The laser displacement sensor continuously monitors the displacement of the target. When the displacement of the target in the direction of the water flow exceeds a certain value, the laser displacement sensor sends a displacement signal to the automatic controller to control the start of the winch on the dam and tighten the plugging net to ensure that the filled plugging material is piled at the planned position as required; when the plugging material is tightened, the laser displacement sensor measures the position of the target and sends a signal to the automatic controller, which stops the winch. When the tension measured by the tension sensor is higher than a certain value, a winch start signal is sent through the automatic controller to release the Kevlar traction rope, reduce the force on the Kevlar traction rope, and stop the winch after the tension reaches a certain value; when the tension measured by the tension sensor is lower than a certain value, a winch start signal is sent through the automatic controller to tighten the Kevlar traction rope, increase the force on the Kevlar traction rope, and stop the winch after the tension reaches a certain value.

10. The method for rapidly blocking dam breach according to claim 9, characterized in that: In the sixth step, first lay a waterproof bag filled with gravel on the bottom of the sealing net to form a base layer; then pile sand bags on the base layer. The sand bags should be placed in order from outside to inside and from low to high to form a multi-level sealing structure.

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