A dam breach isolation and sealing system and its sealing method

Abstract

This invention discloses a dike breach isolation and sealing system and its sealing method. The isolation and sealing system includes an isolation system, a traction tensioning system, and a sealing system. The isolation system includes an isolation cloth and a cloth tail tensioning system. The isolation cloth roll is lowered into the breach, and the cloth tail is fixed at the deployment point. The cloth head is pulled and spread against the bottom by the traction tensioning system. The width of the isolation cloth covers the breach, and the length covers the water flow area, the dike body, and the spillway area. The bottom of the isolation cloth is attached to the bottom of the river channel and the inner slope of the dike. The traction tensioning system includes a traction rope and a horizontal pressure roller. This system can improve the success rate of the isolation cloth's spreading isolation and bottom protection. The isolation cloth isolates and protects the bottom of the river channel, the breach, and the dike body, effectively controlling the widening rate of the breach and achieving a high sealing success rate. Furthermore, this system can be manufactured as emergency supplies or standard support equipment for pre-deployment, improving the speed of disaster relief and rescue response. The sealing method based on this system is scientific, safe, and efficient in sealing breaches.

Description

Technical Field

[0001] This invention relates to the field of water conservancy engineering sealing technology, specifically to a dam breach isolation and sealing system and its sealing method. Background Technology

[0002] Sealing breaches in dikes is both a systemic engineering problem and a comprehensive technical challenge. When sudden breaches occur in river and lake dikes, reservoir dams, and cofferdams due to extreme weather, piping, or structural instability, the sealing operation must be carried out effectively, safely, and efficiently. This process involves the scientific selection and rational scheduling of personnel, materials, sites, and equipment.

[0003] Currently, the common method for blocking river breaches is to freely throw materials such as stones, geotextile bags, and large blocks of concrete into the breach. These materials lack underwater stability at the breach site and are often washed downstream in high-speed water flow, resulting in low material utilization. This leads to the actual amount of materials used for breach closure exceeding the theoretical calculation. Furthermore, the transportation and collection of large quantities of materials are difficult due to disasters, which increases the difficulty of breach closure and reduces its efficiency. Moreover, the primary task of breach closure is to effectively control the rate of breach widening. Quickly and effectively controlling the development of the breach in its early stages can avoid the difficulty of operations under larger water flows later. Although throwing materials to reinforce the dike can slow down the rate of breach expansion to some extent, it is easy to encounter problems with the stability of the sealing material due to excessive water flow, which cannot effectively guarantee a rapid and successful dike reinforcement.

[0004] Existing technologies also include using rubber dams as fixed dams or temporarily applying them to rivers with flat riverbeds and low flow rates to assist in construction cofferdams. Although they are highly efficient at sealing, they are difficult to fix as dams used to intercept rivers with steep riverbeds and high flow rates, and are especially inconvenient to use in the process of flood control and disaster relief to close breaches in dikes.

[0005] Therefore, the present invention provides a dike breach isolation and sealing system and sealing method, which has a high sealing success rate, disperses the force on the breach through the isolation cloth, and effectively improves the stability of throwing or rubber dam interception. Summary of the Invention

[0006] The purpose of this invention is to overcome the deficiencies of the prior art and provide a dam breach isolation and sealing system and sealing method to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the technical solution of the present invention is as follows:

[0008] A dam breach isolation and sealing system includes an isolation system, a tensioning system, and a sealing system; wherein,

[0009] The isolation system includes an isolation fabric and a fabric tail tensioning system. The isolation fabric is a flexible, waterproof fabric that can be unfolded and retracted. The isolation fabric is retracted to form an isolation fabric roll, which is then sunk and deployed in the middle of the river or in a calmer water flow area, directly facing the breach. The fabric tail is fixed at the deployment point, and the fabric head is pulled along the direction of the water flow at the breach and laid against the bottom of the river through the tensioning system. The width of the isolation fabric covers the entire breach and extends to the embankment on both sides of the breach. The length of the fabric extends from the water flow area of ​​the river to the discharge area outside the embankment. The bottom of the isolation fabric is attached to the bottom of the river and the slope inside the embankment.

[0010] The traction tensioning system includes a traction rope and a horizontal pressure roller. The horizontal pressure roller is fixedly installed at the foot of the embankment and can rotate. The traction end of the traction rope is located on the embankment side of the horizontal pressure roller, and its tensioning end is connected to the end of the isolation cloth. During the laying stage at the bottom of the river channel, the traction rope is reversed by the horizontal pressure roller and a horizontal tension force is applied to the end of the cloth.

[0011] A containment system, which relies on an isolation system, is used to seal breaches.

[0012] As a preferred embodiment of the present invention, the sealing system includes a filling net bag, which is filled and pressed onto the isolation cloth and advances from both sides of the breach toward the middle to form a seal. The filling net bag is connected to a filling positioning anchor, which is anchored along the water flow of the breach and anchored to the bottom of the river channel.

[0013] As a preferred embodiment of the present invention, the sealing system includes a rubber dam, which is located at the bottom of the isolation cloth and gradually cuts off the water flow by real-time inflation and expansion, forming a flexible dam body that seals the water discharge side of the breach. The two ends of the rubber dam extend to the outside of both sides of the breach and are fixed by positioning tools.

[0014] As a preferred embodiment of the present invention, the tail section of the isolation fabric is a gravity interlayer fabric area. Several grouting chambers and multiple flexible grouting pipes connecting the grouting chambers are arranged in the gravity interlayer fabric area. The grouting pipes are led out from one end of the isolation fabric and are used to inject gravity grout with a density greater than that of water to form a flexible gravity zone that fits against the bottom of the river for pressure protection.

[0015] As a preferred embodiment of the present invention, a redundant area is provided in the middle of the isolation cloth. When the dike body is covered and laid, the redundant area is directly opposite the breach and adapts to the breach to form a drainage groove covering the breach cross-section.

[0016] As a preferred embodiment of the present invention, after the isolation cloth is folded and collected, it is stored in a positioning and storage cloth that is integrated with the cloth tail to form an isolation cloth roll; during the laying process, a tension skeleton line is provided on the positioning and storage cloth, and the cloth tail tensioning system is tensioned through the tension skeleton line to fit the cloth head of the isolation cloth at the bottom of the river.

[0017] As a preferred embodiment of the present invention, the isolation cloth roll is rolled up and unrolled by a storage roller frame, which is positioned at the delivery point.

[0018] A method for sealing a breach in a dike includes the following steps and contents:

[0019] S1. Clear the bottom of the riverbed in front of the breach;

[0020] S2. Deploy isolation fabric rolls in the middle of the river channel or in areas with slow water flow directly opposite the breach, and fix the position of the isolation fabric rolls. The traction rope of the isolation fabric head extends to the embankment. At the same time, deploy the horizontal pressure rollers that span the traction ropes, and fix them to the embankment foot by the positioning anchors at both ends of the horizontal pressure rollers. Pre-install a rubber dam in an empty state outside the breach.

[0021] S3. Lay out the isolation cloth, and at the same time pull multiple traction ropes to apply horizontal traction force evenly to the cloth head. Lay the isolation cloth head against the river bottom and climb up along the embankment to cover the embankment surface inside the embankment until the isolation cloth extends to the water discharge side of the embankment. Tension and fix the cloth head on the water discharge side.

[0022] S4. When the water flow is large, the tail of the isolation cloth can be counterweighted by grouting the gravity interlayer cloth area, so that the tail of the cloth fits the bottom of the river.

[0023] S5. A sealing system is built based on the isolation fabric. The sealing system adopts the flexible interception method, which involves filling the rubber dam with water or a liquid filler with a density greater than water to form a flexible flat blockage interception dam below the isolation fabric at the breach.

[0024] As a preferred embodiment of the present invention, the sealing system adopts a flexible interception combined with the throwing and advancing method. Step S5 further includes: after completing the flexible sealing of the outside of the breach, throwing and filling nets to form a protective body, the throwing and filling bags are filled with on-site soil or sand and mud and collected to form throwing and filling nets, the throwing and filling positioning anchor connected to the throwing and filling nets is anchored to the bottom of the river channel outside the breach, and the throwing and filling nets are continuously thrown from both sides of the breach toward the middle above the isolation cloth.

[0025] As a preferred embodiment of the present invention, the traction rope applies traction force through a positioning pulley fixed in the spillway area, and the operating end of the traction rope is located on the dike body; several obstacle-crossing auxiliary buoys are evenly distributed at the ends of the cloth.

[0026] Compared with the prior art, the dam breach isolation and sealing system and sealing method of the present invention have the following beneficial effects:

[0027] This isolation and sealing system uses a bottom-stretching isolation fabric, with the fabric end always pressed below the water head, avoiding water flow disturbance and improving the success rate of the isolation fabric's deployment and bottom protection. The isolation fabric isolates and protects the riverbed, breach, and levee. The scouring force of the water flow on the breach and levee is dispersed through the large-area isolation fabric, effectively controlling the widening rate of the breach in its early stages, facilitating sealing operations. Furthermore, the isolation fabric makes sealing operations easier to implement and results in a higher success rate. This system can be manufactured into emergency supplies or standard support equipment for pre-deployment at levees and important areas, improving the speed of disaster relief and rescue response.

[0028] This sealing method is based on an isolation sealing system, which can scientifically, safely and efficiently seal breaches. It is highly operable, the sealing filler is readily available, and the sealing success rate is high. It is suitable for promotion in disaster relief and rescue, cofferdam closure construction, river crossing projects, and piping sealing construction. Attached Figure Description

[0029] Figure 1 This is a structural diagram illustrating the deployment and isolation process of the isolation and sealing system designed in Example 1.

[0030] Figure 2 This is a schematic diagram of the deployment and isolation process of the isolation and sealing system designed in Example 2;

[0031] Figure 3 A side view of the isolation and sealing system designed for Example 2, showing the deployment and isolation process.

[0032] Figure 4 This is a schematic diagram of the sealing process of the isolation and sealing system designed in Example 2;

[0033] Figure 5 This is a schematic diagram of the sealing process of the isolation and sealing system designed for Example 1.

[0034] In the diagram: 100, embankment body; 200, traction tensioning system; 210, traction rope; 220, positioning pulley; 230, tensioning anchor; 240, horizontal pressure roller; 250, pressure roller positioning anchor; 300, isolation system; 310, isolation cloth; 311, grouting chamber; 312, grouting pipe; 320, obstacle-crossing auxiliary pontoon; 330, cloth tail tensioning system; 340, anchoring pontoon; 350, receiving roller frame; 360, cloth head lateral tensioning anchor; 370, positioning receiving cloth; 400, sealing system; 410, filling net bag; 420, filling positioning anchor; 430, rubber dam; 440, dam body positioning pile. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely the best embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] The term "embodiment" as used herein means that a particular method, step, or content described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0037] The dam breach isolation and sealing system of the present invention can be applied to flood control and disaster relief, emergency support for major water conservancy projects, military rapid river crossing projects or cofferdam closure construction, and can also be pre-deployed as standardized emergency support equipment for water conservancy emergency management departments and flood control and rescue teams.

[0038] The key to implementing this isolation and sealing system lies in avoiding the confluence area with high flow velocity near the breach. The isolation system 300 is deployed outside the confluence area. The isolation system 300 includes an isolation fabric 310 and a fabric tail tensioning system 330. The isolation fabric 310 is tensioned and fixed in the middle of the river channel in a calm area or with low flow velocity by the fabric tail tensioning system 330. The isolation fabric 310 is laid flat against the bottom by the horizontal traction force applied by the traction tensioning system 200. Under the action of water pressure and horizontal traction force, the fabric head is always pressed below the water head, which can avoid water flow disturbance and improve the success rate of the isolation fabric 310 in spreading, isolating and protecting the bottom. The isolation fabric 310 isolates and protects the bottom of the river channel, the breach, and the embankment 100. The scouring force of the water flow on the breach and the embankment 100 is dispersed by the large-area isolation fabric 310, which can quickly and effectively control the development of the breach in the early stage, and buy more time for disaster relief and rescue work. Finally, the sealing operation is carried out based on the isolation fabric 310 to improve the sealing success rate.

[0039] Example 1: As Figure 1 and Figure 5 As shown, this embodiment provides a dike breach isolation and sealing system and its sealing method, wherein the isolation and sealing system includes an isolation system 300, a traction tensioning system 200 and a sealing system 400;

[0040] Specifically, the isolation fabric 310 is a flexible waterproof fabric that can be unfolded and stored. In this embodiment, the isolation fabric 310 is rolled up using a storage roller frame 350 to facilitate storage and transportation. The storage roller frame 350 is equipped with a winding roller, a tension beam, and a support plate. During sinking and deployment, the support plate is placed at the bottom of the riverbed to lift the isolation fabric 310 roll off the foundation. The winding roller can rotate for unwinding and rewinding. The tail of the isolation fabric 310 is fixedly connected to the winding roller. When fully unfolded, the storage roller frame 350 acts as a side pressure, and the tension beam is parallel to the winding roller. The storage roller frame 350 is connected and positioned via a tail tensioning system 330. As the preferred implementation of the tail tensioning system 330, as shown below... Figure 1 As shown, a multi-point anchoring method is used for tensioning and positioning in the opposite direction of the breach water flow. Anchor buoys 340 are installed on the anchor body to mark the anchor points and assist in anchoring.

[0041] In this embodiment, the laying of the isolation fabric 310 is achieved by the traction tensioning system 200 pulling the fabric head along the direction of the breach's water flow and close to the riverbed. To form a pre-supporting bottom and disperse the impact force over a large area, the laying width of the isolation fabric 310 is greater than the width of the breach, extending on both sides to cover the embankment 100 on both sides of the breach. The laying length of the isolation fabric 310 avoids the breach's confluence area as much as possible, using a calm water flow area as the initial position. If the distance between the calm water flow area and the breach is too long and the length of the isolation fabric 310 is insufficient, the anchoring strength of the fabric tail is increased by adding anchor points. The isolation fabric 310 covers the water flow area, the confluence area, and the embankment 100 and extends... Extending to the spillway outside the embankment 100, the fabric end is tensioned and fixed outside the embankment 100. Under the synergistic ballast of the horizontal pressure roller 240, the bottom of the isolation fabric 310 on the water flow side of the embankment 100 adheres to the bottom of the river channel and the inner slope of the embankment 100. In addition, the isolation fabric 310 has a redundancy in the middle, forming a redundant area that can adapt to the deformation of the support surface. During the laying, the laying position of the redundant area is estimated so that the redundant area falls exactly into the breach. Under the action of the breach water flow, the redundant area sinks and adheres to the breach cross-section, forming a drainage groove covering the breach cross-section, maintaining the leakage of the breach during the laying process, and improving the isolation laying success rate of the isolation fabric 310.

[0042] To avoid disturbing the isolation fabric 310 due to the high-speed convergence of water from the breach, which would increase the difficulty of its deployment, the isolation fabric 310 is tensioned using the traction tensioning system 200, referring again to... Figure 1The traction rope 210, which applies traction force to the fabric head, rotates around the horizontal pressure roller 240 for turning and tensioning. The horizontal pressure roller 240 is sunk and positioned at the foot of the dike body 100. It is quickly positioned by the pressure roller positioning anchors 250 on both sides. The anchor chain of the pressure roller positioning anchor 250 is connected to the end of the horizontal pressure roller 240 through the bearing. The horizontal pressure roller 240 can rotate to reduce the frictional resistance of tensioning. Thus, when the horizontal pressure roller 240 at the foot of the dike changes direction, the traction tension applied by the traction rope 210 to the fabric head remains in the horizontal direction. In addition, the horizontal stretching and laying of the isolation fabric 310 along the bottom of the river requires a certain degree of flatness of the river bottom. Obstacles need to be cleared before unfolding. At the same time, several obstacle-crossing auxiliary floats 320 are evenly arranged on the fabric head through the chain. By lifting the obstacle-crossing auxiliary floats 320 on the water surface, the fabric head is lifted to implement traction. After the fabric is laid over the obstacle, the obstacle-crossing auxiliary floats 320 are released. Under the action of horizontal traction force, the fabric head returns to the bottom-laying process.

[0043] The sealing system 400 in this embodiment adopts the throwing and advancing method, which is applied to sealing construction with small breaches and moderate water flow velocity. The isolation system 300, as a whole, forms a force-bearing whole after tensioning, dispersing the excessive local scouring force to the large area of ​​the isolation cloth 310. Relying on the bottom protection, cross-sectional coverage protection, and scouring force dispersion of the isolation system 300, the success rate of the throwing and advancing sealing operation is improved to a certain extent. The throwing and filling net 410 is thrown onto the isolation cloth 310 of the breach. The scouring force on the throwing and filling net 410 is transferred to the isolation cloth 310 for dispersion. Compared with soft mud and sand, the stability of the throwing and filling net 410 is improved to a certain extent, increasing the success rate of throwing and advancing sealing.

[0044] This embodiment also provides a method for sealing a dam breach, based on the above isolation and sealing system, which includes the following contents and steps:

[0045] S1. Clear the riverbed in front of the breach by dragging the clearing rake along the direction of the river flow or along the 100-degree direction of the embankment to push away the stones and debris in front of the breach. The clearing rake can also level the riverbed to some extent, which is conducive to subsequent paving operations.

[0046] S2. Deploy 310 rolls of isolation fabric. For the river channel, the deployment point should be selected in the calm area directly opposite the breach, or in the middle of the river channel depending on the length of the isolation fabric 310. After deployment, pull rope 210 at the end of the isolation fabric 310 is pulled to the embankment 100. To facilitate the pulling during the entire deployment process, positioning pulley 220 is used for assistance. First, a fixed point for the positioning pulley 220 is preset on the spillway side. The fixed point is located outside the coverage area of ​​the isolation fabric 310. After the positioning pulley 220 reverses direction, the operating end of the pull rope 210 is always located on the embankment 100. To reduce the traction friction of the pull rope 210, multiple auxiliary pulleys can be installed along the rope on the embankment 100 for support.

[0047] At the same time, the horizontal pressure roller 240 spanning the traction rope 210 is lowered and deployed. The horizontal pressure roller 240 is anchored and positioned at the bottom of the river channel at the foot of the embankment by the pressure roller positioning anchors 250 at both ends. Under the ballast of the horizontal pressure roller 240, the traction rope 210 forms a horizontal rope segment on the water flow side.

[0048] A pre-installed rubber dam 430 is laid out in a hollow state on the outside of the breach. The rubber dam 430 is placed across the outside of the breach by being pulled by the fixing rope at the end of the rubber dam 430. The rubber dam 430 is then tensioned from both sides by the dam positioning piles 440 or the dam positioning anchors to fix the rubber dam 430 to the toe of the dike on the spillway side.

[0049] S3. Laying out the isolation cloth 310; the traction of the traction rope 210 can be achieved by using a low-speed winch or by multiple people operating simultaneously. A horizontal traction force is evenly applied to the cloth end, and the cloth end of the isolation cloth 310 is laid against the riverbed. When encountering obstacles, drones or watercraft can be used for coordination. The obstacle is overcome by lifting the obstacle-crossing auxiliary buoy 320 and pulling it forward. With the reversing assistance of the positioning pulley 220, the isolation cloth 310 climbs along the embankment 100 to cover the embankment surface inside the embankment and continues to be pulled and laid to the drainage side of the embankment 100. After the isolation cloth 310 is fully unrolled, a certain tension force is formed on the isolation cloth 310 by locking the operating end of the traction rope 210, so that the isolation cloth 310 forms a force-bearing whole, and its local scouring force is dispersed through the large area of ​​the isolation cloth 310.

[0050] S5. A sealing system 400 is constructed based on the isolation cloth 310. The sealing system 400 adopts a flexible interception method, filling the rubber dam 430 below the isolation cloth 310 with water or a liquid filler with a density greater than water. The flexible dam intercepts the breached water flow through a flat blocking method. Since the flexible dam is located below the isolation cloth 310, the impact of the water flow on the rubber dam 430 is dispersed to the large area of ​​the isolation cloth 310 and the cloth tail tensioning system 330 and the traction tensioning system 200 at both ends. The flexible interception of the rubber dam 430 has a high success rate.

[0051] Example 2: Based on Example 1, this example also provides the roll-up structure, tail counterweight structure, and protective body of the isolation and sealing system, and describes the corresponding isolation and sealing of dam breaches, such as... Figures 2 to 4 As shown, it is mainly used for on-site sealing construction in flood disaster relief, where the water flow is fast and the interception task is urgent. For repetitive implementation methods, this embodiment will not be described in detail.

[0052] like Figure 2As shown, in this embodiment, the isolation cloth 310 is wrapped and stored by a spreadable positioning and storage cloth 370. The isolation cloth 310 is folded and unfolded, and its end is connected to the positioning and storage cloth 370 as a whole. The cloth end tension anchor 230 is connected to the tension skeleton line of the positioning and storage cloth 370 for anchoring and positioning. After the isolation cloth 310 is rolled and placed in place according to step S2 in embodiment one, the positioning and storage cloth 370 is untied and spread out according to step S2 in embodiment one.

[0053] For rivers with rapid flow, to prevent water from seeping from the tail of the isolation fabric 310 to the bottom, which would cause the fabric to float and create complex turbulence, the fabric cannot effectively adhere to the bottom. Therefore, the large area of ​​the isolation fabric 310 has limited effect in dispersing local scouring forces, and the impact force is mainly countered by the tail tensioning system 330, failing to achieve the functions of bottom protection and pre-isolation. Therefore, this embodiment adopts a counterweight ballast approach, using the isolation fabric... The tail section of 310 is integrally formed with a gravity interlayer fabric area. Several sealed grouting chambers 311 are formed in the gravity interlayer fabric area. They are connected in series by multiple flexible grouting pipes 312 along the width direction of the isolation fabric 310. In the retracted state, the grouting chambers 311 are in an empty state. After unfolding, they are connected to the grouting equipment through the grouting pipes 312. Gravity grout with a density greater than that of water, such as cement grout or muddy water, is uniformly injected into the gravity interlayer fabric area to form a flexible gravity zone that fits against the bottom of the river for tail end pressure protection.

[0054] Correspondingly, the dam breach sealing method also includes step S4, after the isolation cloth 310 is fully laid and tensioned or after the gravity interlayer cloth area is laid, grouting counterweight is implemented in the gravity interlayer cloth area of ​​the isolation cloth 310. Multiple grouting pipes 312 are led out from one end of the isolation cloth 310 and connected to the same grouting equipment. High-pressure injection of gravity grout is carried out until the liquid level no longer changes, and the grouting operation is completed. In this embodiment, the gravity grout is cement grout. After the breach sealing construction is completed, the isolation sealing system can provide pre-isolation protection for the closure dam body, increase the service life of the closure dam body. After the cement grout solidifies and reaches its strength, a high-strength bottom protection plate is formed that fits the bottom of the river channel. Check whether the bottom of the high-strength bottom protection plate is dense. If there are voids, drill holes and perform high-pressure grouting on the bottom.

[0055] In addition, for breaches where the interception task is urgent and the water flow speed is average, the sealing operation can also use only a high-strength protective body for interception and sealing, that is, the protective body is formed by throwing and filling the 410 mesh bag to occupy the dike.

[0056] For situations with high water flow velocity, in order to further ensure the success rate of the dam-building project, this embodiment adopts a combination of flexible interception and dam-building advance to achieve the blocking. Specifically, firstly, the flexible flat blocking of the rubber dam 430 is completed. Implementing flat blocking is conducive to the uniform distribution of water flow. In order to reduce the impact force of the rubber dam 430, the blocking process can be divided into multiple stages. For example, during the flexible flat blocking, a certain amount of discharge can be reserved at the top of the rubber dam 430. After the dam-building advance is completed with the rubber dam 430 as a support, the dam-building and heightening interception is then implemented.

[0057] Step S5 also includes the rapid deployment of filling nets 410 to form a protective barrier, with the rubber dam 430 backing it. This strengthens the flexible seal of the breach, achieving efficient breach sealing through a combination of rigid and flexible materials. The primary material used is readily available silt and sand, which, after being filled into impermeable sand bags, forms readily available filling material for the breach. To further improve the success rate of the first-time filling, heavy-duty filling nets 410 are first deployed. Several filling bags are collected and fixed in the nets to form a unified heavy-duty filling structure. The net bag 410, which is used for filling, can not only adapt to the deformation of the riverbed, but also achieves better stability after being weighted. The stability of the net bag 410 is further enhanced by the filling positioning anchor 420, which is anchored at a certain distance from the breach. After the heavy net bag 410 is filled to form a stable protective body according to the advance method, small net bags 410 are filled inside the protective body to thicken it. The use of net bags 410 and the combination of different sizes can improve the success rate of breach sealing and the impact resistance.

[0058] It should be noted that the isolation and sealing system and the dike breach sealing method in this embodiment can not only be applied to breach sealing construction, the closure construction of cofferdam projects, and river crossing projects, but also to the problem of piping in dikes and piping through the bottom of river channels. In solving the piping problem, the bottom tensioning approach of this invention is used to arrange the isolation cloth 310 on the inner side of the dike or the bottom of the river channel, so that it is in close contact with the dike surface or the bottom of the water, preventing water from seeping into the piping channel from the bottom of the isolation cloth 310. Then, the piping opening is sealed by throwing on the isolation cloth 310, thus solving the piping defect from the root.

[0059] The directional or locative terms mentioned in this article, such as "front," "back," "end," "side," "bottom," "inner," and "outer," are respectively... Figures 1-5 The coordinates or orientations shown are not intended to limit the devices, elements, or components to a particular orientation, or to require them to be constructed and operated in a particular orientation.

[0060] Furthermore, some of the aforementioned terms, besides indicating location or positional relationships, may also have other meanings. For example, terms such as "above" and "inside" may, in certain circumstances, indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0061] Through the above description of the embodiments, those skilled in the art can clearly understand that the various embodiments of this application can be implemented by means of software or software combined with necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware functions. Based on this understanding, the technical solution of this application, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. The software product is stored in a storage medium and includes several instructions to cause a computer device, such as including but not limited to a personal computer, server, or network device, to execute all or part of the steps of the method described in any embodiment of this application.

[0062] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dam breach isolation and sealing system, characterized in that: This includes isolation systems, tensioning systems, and sealing systems; among them, The isolation system includes an isolation fabric and a fabric tail tensioning system. The isolation fabric is a flexible, waterproof fabric that can be unfolded and retracted. The isolation fabric is retracted to form an isolation fabric roll. The isolation fabric roll is sunk and deployed in the middle of the river channel or in a calm water area, directly facing the breach. The fabric tail of the isolation fabric is fixed at the deployment point. The fabric head of the isolation fabric is pulled by the tensioning system along the direction of the water flow at the breach and spread along the bottom of the river channel. The width of the isolation fabric covers the entire breach and extends to the embankment on both sides of the breach. The length of the fabric extends from the water flow area of ​​the river channel to the discharge area outside the embankment. The bottom of the isolation fabric is attached to the bottom of the river channel and the inner slope of the embankment. The traction tensioning system includes a traction rope and a horizontal pressure roller. The horizontal pressure roller is fixedly installed at the foot of the embankment and can rotate. The traction end of the traction rope is located on the embankment side of the horizontal pressure roller, and its tensioning end is connected to the fabric head. During the laying stage at the bottom of the river channel, the traction rope is reversed by the horizontal pressure roller and a horizontal tension force is applied to the fabric head. The sealing system, which is based on the isolation system, is used to seal the breach.

2. The dam breach isolation and sealing system according to claim 1, characterized in that: The sealing system includes a filling net bag, which is filled and pressed onto the isolation cloth and extends from both sides of the breach toward the middle to form a seal. The filling net bag is connected to a filling positioning anchor, which is anchored along the water flow of the breach and anchored to the bottom of the river channel.

3. The dam breach isolation and sealing system according to claim 2, characterized in that: The sealing system includes a rubber dam located at the bottom of the isolation fabric. The rubber dam gradually cuts off the water flow by real-time inflation and expansion, forming a flexible dam body that seals the breach's spillway side. The two ends of the rubber dam extend to the sides of the breach and are fixed by positioning tools.

4. The dam breach isolation and sealing system according to claim 2 or 3, characterized in that: The tail section of the isolation fabric is a gravity interlayer fabric area. Several grouting chambers and multiple flexible grouting pipes connected to the grouting chambers are set in the gravity interlayer fabric area. The grouting pipes are led out from one end of the isolation fabric and are used to inject gravity grout with a density greater than that of water to form a flexible gravity zone that fits against the bottom of the river for pressure protection.

5. The dam breach isolation and sealing system according to claim 4, characterized in that: The isolation fabric has a redundant area in the middle. When the dike is covered and laid, the redundant area is directly opposite the breach and adapts to the breach to form a drainage groove covering the cross-section of the breach.

6. The dam breach isolation and sealing system according to claim 5, characterized in that: After being folded and rolled up, the isolation cloth is stored in a positioning and storage cloth that is integrated with the cloth tail to form the isolation cloth roll. During the laying process, the positioning and storage cloth is provided with a tension skeleton line, and the cloth tail tensioning system is tensioned through the tension skeleton line to fit the cloth head to the bottom of the river and position it.

7. The dam breach isolation and sealing system according to claim 5, characterized in that: The isolation cloth roll is rolled up and unrolled using a storage roller frame, which is positioned at the delivery point.

8. A method for sealing a dam breach, based on the dam breach isolation and sealing system described in claim 6 or 7, characterized in that, Includes the following steps and content: S1. Clear the bottom of the riverbed in front of the breach; S2. The isolation fabric roll is lowered and deployed in the middle of the river channel or in a calm area directly opposite the breach, and its position is fixed. The traction rope of the isolation fabric extends to the embankment. At the same time, the horizontal pressure roller spanning the traction rope is lowered and deployed, and its position is fixed at the toe of the embankment by the pressure roller positioning anchors at both ends of the horizontal pressure roller. The rubber dam in a pre-emptive state is placed outside the breach. S3. Lay out the isolation cloth, and at the same time pull multiple traction ropes to apply a horizontal traction force evenly to the cloth head. Lay the cloth head against the riverbed and climb up along the embankment to cover the inner embankment surface until the isolation cloth extends to the drainage side of the embankment. Tension and fix the cloth head in the drainage area. S4. When the water flow is large, the tail of the cloth is counterweighted by grouting the gravity interlayer cloth area of ​​the isolation cloth, so that the tail of the cloth is attached to the bottom of the river channel. S5. The sealing system is constructed based on the isolation cloth. The sealing system adopts a flexible interception method, which involves filling the rubber dam with water or a liquid filler with a density greater than water to form a flexible flat blockage interception dam below the isolation cloth at the breach.

9. The method for sealing a breach in a dike according to claim 8, characterized in that: The sealing system adopts a flexible interception combined with a throwing and advancing method. Step S5 also includes: after completing the flexible sealing of the outside of the breach, throwing the filling net to form a protective body. The filling net is formed by filling and collecting on-site soil or sand and mud. The throwing positioning anchor connected to the filling net is anchored to the bottom of the river channel outside the breach. Above the isolation cloth, the filling net is continuously thrown from both sides of the breach toward the middle.

10. The method for sealing a breach in a dike according to claim 9, characterized in that: The traction rope applies traction force through a positioning pulley fixed to the spillway area, and the operating end of the traction rope is located on the dike body; the cloth head is evenly distributed with several obstacle-crossing auxiliary buoys.

Images