A flexible layer occlusion device

Abstract

The utility model discloses a kind of plugging devices of flexible layer, comprising: first clamping piece, the first clamping piece is set to the inside of the flexible layer after passing through the opening of flexible layer, the opening is made on the basis of the gap of flexible layer, the size of the opening is greater than the size of the gap;Second clamping piece, the second clamping piece is set to the outside of the flexible layer, and with the first clamping piece alignment;Connecting piece, the connecting piece is fixedly connected with the first clamping piece by passing through the hole on the second clamping piece.In the above technical scheme, the structure design of the opening of flexible layer and clamping piece is ingenious, especially suitable for the leakage plugging operation under the condition that only single side can be reached in the flexible layer of underground structure.

Description

Technical Field

[0001] This utility model relates to the technical field of seepage prevention for underground structures such as buried hot water storage tanks, artificial reservoirs and landfills, and specifically to a flexible layer sealing device. Background Technology

[0002] In various water conservancy, energy, and infrastructure projects, water leakage poses a serious threat to structural safety and operational stability, especially in buried hot water storage tanks, pumped storage power stations, and rockfill dam systems. Traditional "dry-site construction" methods require emptying the reservoir, which not only affects operational efficiency and increases economic costs but also brings significant ecological problems.

[0003] Currently, underwater leak sealing methods mainly fall into three categories: First, remote leak detection is achieved using robots and sensing equipment, such as the deep-water seepage detection and repair device proposed in CN208668372U, which completes autonomous deep-water detection and repair through an integrated system of sonar and repair manipulators. Second, structural sealing methods are employed, such as the rockfill dam sealing structure described in CN206693158U, which uses conduits and caps at the joints to achieve rapid sealing through grouting and surface reinforcement. Third, material-based sealing solutions are used, such as CN110984160A (applicant: China Power Construction Kunming Institute), which uses PTN material and SR anti-seepage caps to implement graded leak sealing and pressure sealing at different crack levels, forming a multi-layered seepage prevention system.

[0004] While the three technologies mentioned above have solved the problem of underwater leak sealing to some extent, they still have significant limitations in the following aspects: First, most processes are limited to specific structures (such as rockfill dams) and are difficult to universally apply to complex, irregularly shaped aquatic thermal storage systems; second, sealing materials have high requirements for the substrate and are prone to interface debonding and sealing failure in humid environments; third, grouting technology often relies on high-pressure systems, which pose stability and safety risks during underwater operations. Furthermore, leak detection still requires a large amount of manual labor, resulting in low efficiency and insufficient accuracy, and deep-water operations place extremely high demands on construction equipment and personnel.

[0005] Furthermore, CN106836132A integrates multiple steps, including structural removal, leakage detection, flexible grouting, rubber rod embedding, and composite waterstop cover bonding, into a single process. While this technology overcomes the limitations of single-material or structural methods in sealing leaks and improves adaptability and feasibility under complex underwater conditions, it is only suitable for underwater treatment of seepage at joints of rigid materials such as reinforced concrete panels, and not for underwater treatment of seepage at joints of non-rigid materials. Flexible barrier layers are commonly used in the seepage prevention structure of underground thermal storage tanks, but long-term operation or external disturbances may lead to gaps or perforations. Once a leak occurs, repairs are difficult, and if not handled promptly, it may affect the operation of the thermal storage tank or cause groundwater pollution.

[0006] In summary, in underwater environments and cross-seasonal thermal storage applications, leakage monitoring and sealing technologies face higher technical requirements and urgently need a threshold. There is an urgent need for efficient, safe, and environmentally friendly solutions that are suitable for underwater operations and easy to accurately locate and seal leaks. Utility Model Content

[0007] This utility model provides a flexible layer sealing device to solve at least one of the technical problems existing in the prior art.

[0008] According to an embodiment of the present invention, a flexible layer sealing device is provided, the flexible layer sealing device comprising:

[0009] A first clamping member is disposed inside the flexible layer after passing through an opening in the flexible layer. The opening is made on the basis of a gap in the flexible layer, and the size of the opening is larger than the size of the gap.

[0010] The second clamping member is disposed on the outside of the flexible layer and aligned with the first clamping member;

[0011] A connector that passes through a hole in the second clamping member and is connected and fixed to the first clamping member.

[0012] In some embodiments, a first flexible pad is provided between the first clamping member and the flexible layer; and / or,

[0013] A second flexible pad is also provided between the second clamping member and the flexible layer.

[0014] In some embodiments, the connector is a bolt, and there are two or more bolts. The hole on the second clamping member is a through hole, and the first clamping member is provided with a threaded blind hole or a threaded through hole at a position corresponding to the through hole.

[0015] In some embodiments, the length of the slit is greater than the width of the slit, and correspondingly, the length L1 of the opening is greater than the width W1 of the opening;

[0016] The length L2 of the first clamping member is greater than the length L1 of the opening, the length L1 of the opening is greater than the width W2 of the first clamping member, and the width W2 of the first clamping member is greater than the width W1 of the opening. Therefore:

[0017] L2>L1>W2>W1.

[0018] In some embodiments, the thickness of the first clamping member is T, and the width W1 of the opening is greater than the thickness, i.e.:

[0019] W1>T.

[0020] In some embodiments, the first clamping member passes through the opening in the width direction and is placed inside the flexible layer, and then rotates 90 degrees to cover the opening area.

[0021] In some embodiments, the length of the gap ranges from 0.5 to 50 centimeters, and the width of the gap ranges from 0.2 to 20 centimeters.

[0022] In some embodiments, the length L2 of the first clamping member is at least 10 centimeters greater than the opening length L1;

[0023] The width W2 of the first clamping member is at least 10 centimeters greater than the width W1 of the opening;

[0024] The length L1 of the opening is greater than the width W2 of the first clamping member, with a difference of 1-5 cm;

[0025] The width W1 of the opening is greater than the thickness T of the first clamping member, with a difference of 1-5 cm.

[0026] In some embodiments, the flexible layer is made of a flexible barrier material, which is at least one of the following: polyethylene, polypropylene, polyvinyl chloride, ethylene-vinyl acetate copolymer, butyl rubber, or ethylene propylene diene monomer (EPDM) rubber.

[0027] In some embodiments, the sealing device of the flexible layer is used in buried thermal storage ponds, artificial reservoirs or landfills. The inner side of the flexible layer includes any one of a soil cover layer, a structural filler or a foundation cushion layer. The outer layer of the flexible layer is a sealing operation space, which is a water storage tank, a water body or a maintenance passage.

[0028] The method for sealing a flexible layer according to another embodiment of the present invention includes the following steps:

[0029] A rectangular or near-rectangular inspection opening is made on the flexible layer along the direction of the leakage gap. The length L1 of the opening is greater than the length of the gap, and the width W1 of the opening is greater than the width of the gap.

[0030] Prepare or remove a pre-prepared first clamping member and a second clamping member, wherein the length L2 of the first clamping member is greater than the length L1 of the opening, and the width W2 of the first clamping member is less than the length L1 of the opening;

[0031] Insert the first clamping member under the flexible layer through the opening and rotate it 90 degrees to align it with the leakage area. Adjust the position of the first clamping member until it completely covers the opening, and then align and assemble the second clamping member with the first clamping member on the flexible layer.

[0032] The second clamping member, the flexible layer, and the first clamping member are attached and fixed together by pre-drilled holes and connectors to complete the sealing operation.

[0033] In some embodiments, a flexible pad is also fixed to the side of the first clamping member and / or the second clamping member near the flexible layer.

[0034] In some embodiments, the method further includes:

[0035] Before creating a rectangular or near-rectangular access opening, spray a colored solvent into the area of ​​the flexible layer where a leak is suspected, and observe the flow trend of the colored solvent to determine whether a leak exists and its location; and / or,

[0036] After locating the leak, clean the surface of the flexible layer around the leak to remove deposits and foreign objects, making the opening area flat to facilitate subsequent sealing; and / or,

[0037] After the sealing operation is completed, a colored solvent is sprayed to check for any remaining leakage, confirming the integrity of the sealing.

[0038] Compared with the prior art, the embodiments of this utility model have the following features and advantages:

[0039] The above technical solution fully leverages the separability, insertion capability, and reconfigurability of the clamping structure, achieving efficient sealing in asymmetric environments through partial openings and overall clamping.

[0040] Meanwhile, the use of flexible gaskets, size optimization, and pre-drilled hole arrangement greatly improves the overall sealing performance and ease of operation.

[0041] Therefore, the above technical solution not only improves the efficiency of underwater plugging, but also provides a safe, stable and universal solution for the long-term maintenance of flexible (barrier) layers under the condition of "one-sided operation".

[0042] Specifically, the following advantages were achieved:

[0043] The sealing method is intuitive and easy to operate, requiring no complex instruments;

[0044] The clamping component has a reasonable structural design, which facilitates quick sealing and provides strong sealing performance;

[0045] The materials used are environmentally friendly and corrosion-resistant, making them suitable for long-term underwater service.

[0046] The entire process can be completed underwater by manual or robotic operation, eliminating the need to drain reservoirs and thermal storage ponds, thus saving costs. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the structure of the gaps in the flexible layer provided in some embodiments of this utility model;

[0048] Figure 2 This is a schematic diagram of the structure of the clamping member provided in some embodiments of this utility model;

[0049] Figure 3 This is a schematic diagram of the structure of the flexible layer sealing device provided in some embodiments of this utility model;

[0050] Figure 4 This is a flowchart illustrating the sealing method of the flexible layer provided in some embodiments of this utility model.

[0051] Attached image annotations:

[0052] 1. Gaps in the flexible layer;

[0053] 2. Openings in the flexible layer;

[0054] 3. Second clamping component;

[0055] 4. The second flexible pad of the second clamping member;

[0056] 5. The first flexible pad of the first clamping member;

[0057] 6. First clamping component;

[0058] 7. Connectors;

[0059] 8. Flexible layer;

[0060] 9. Hole. Detailed Implementation

[0061] Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0062] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0063] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0064] In the description of this utility model, the reference to terms such as "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model.

[0065] See Figure 1-3 As shown, an embodiment of this utility model discloses a flexible layer sealing device, comprising:

[0066] The first clamping member 6 is disposed on the inner side of the flexible layer after passing through the opening 2 of the flexible layer 8. The opening is made on the basis of the gap 1 of the flexible layer, and the size of the opening is slightly larger than the size of the gap.

[0067] The second clamping member 3 is disposed on the outside of the flexible layer and aligned with the first clamping member;

[0068] Connector 7, which passes through a hole in the second clamping member and is connected and fixed to the first clamping member.

[0069] In some optional embodiments, a first flexible pad 5 is provided between the first clamping member and the flexible layer;

[0070] A second flexible pad 4 is also provided between the second clamping member 3 and the flexible layer 8.

[0071] In some alternative embodiments, the connector 7 is a bolt, and the number of bolts is two or more. The hole on the second clamping member is a through hole 9, and the first clamping member is provided with a threaded blind hole or a threaded through hole 9 at a position corresponding to the through hole.

[0072] In some embodiments, the length of the slit 1 is greater than the width of the slit 1, and correspondingly, the length L1 of the opening 2 is greater than the width W1 of the opening 2;

[0073] The length L2 of the first clamping member 6 is greater than the length L1 of the opening, the length L1 of the opening 2 is greater than the width W2 of the first clamping member 6, and the width W2 of the first clamping member 6 is greater than the width W1 of the opening, that is:

[0074] L2>L1>W2>W1.

[0075] Furthermore, the thickness of the first clamping member 6 is T, and the width W1 of the opening 2 is greater than the thickness, that is:

[0076] W1>T.

[0077] In some embodiments, the first clamping member passes through the opening in the width direction and is placed inside the flexible layer 8, and then rotates 90 degrees to cover the opening area.

[0078] In some alternative embodiments, the gap length ranges from 0.5 to 50 centimeters, and the gap width ranges from 0.2 to 20 centimeters.

[0079] Furthermore, the length L2 of the first clamping member is at least 10 centimeters greater than the opening length L1;

[0080] The width W2 of the first clamping member is at least 10 centimeters greater than the width W1 of the opening;

[0081] The length L1 of the opening is greater than the width W2 of the first clamping member, with a difference of 1-5 cm;

[0082] The width W1 of the opening is greater than the thickness T of the first clamping member, with a difference of 1-5 cm.

[0083] In some embodiments, the flexible layer is made of a flexible barrier material, which is at least one of the following: polyethylene, polypropylene, polyvinyl chloride, ethylene-vinyl acetate copolymer, butyl rubber, or ethylene propylene diene monomer (EPDM) rubber.

[0084] In some embodiments, the sealing device of the flexible layer is used in buried thermal storage ponds, artificial reservoirs or landfills, the inner side of the flexible layer includes any one of a soil cover layer, structural filler or foundation cushion layer, and the outer layer of the flexible layer is a sealing operation space, which is a water storage tank, a water body or a maintenance passage.

[0085] Combination Figure 4 As shown, the operation steps of this utility model embodiment include:

[0086] Step S100: A rectangular or near-rectangular inspection opening 2 is made on the flexible layer along the direction of the leakage gap 1. The length L1 of the opening 2 is slightly larger than the length of the gap 1, and the width W1 of the opening 2 is slightly larger than the width of the gap 1.

[0087] Step S200: Prepare a first clamping member 6 and a second clamping member 3. The length L2 of the first clamping member 6 is greater than the length L1 of the opening 2, and the width W2 of the first clamping member 6 is less than the length L1 of the opening.

[0088] Step S300: Insert the first clamping member 6 through the opening 2 under the flexible layer 8, and rotate it 90 degrees to align it with the leakage area. After adjusting the position of the first clamping member 6 to completely cover the opening 2, assemble the second clamping member 3 on the flexible layer 8 in alignment with the first clamping member 6.

[0089] In step S400, the second clamping member 3, the flexible layer 8, and the first clamping member 6 are attached and fixed through the reserved hole and the connector 7 to complete the sealing operation.

[0090] To overcome the technical defects of existing technologies, this embodiment provides a reasonable, safe, environmentally friendly, and easy-to-implement underwater leak detection and sealing process for buried thermal storage tanks with flexible barrier layers accessible from one side, after continuous research and experimentation.

[0091] In some alternative embodiments, the first clamping member 6 and / or the second clamping member 3 are further provided with flexible pads (4,5) on the side near the flexible layer 8.

[0092] In some optional embodiments, the method further includes:

[0093] Before opening a rectangular or rectangular access opening, spray colored solvent into the area of ​​the flexible layer where a leak is suspected, and observe the flow trend of the colored solvent to determine whether a leak exists and where the leak is located.

[0094] After locating the leak, clean the surface of the flexible layer around the leak to remove deposits and foreign objects, making the opening area flat to facilitate subsequent sealing.

[0095] After the sealing operation is completed, a colored solvent is sprayed to check for any remaining leakage, confirming the integrity of the sealing.

[0096] Preferred embodiments

[0097] The flexible (barrier) layer in this embodiment is made of a flexible barrier material, preferably polyethylene (PE), polypropylene (PP), or other materials with good ductility, corrosion resistance, and impermeability. However, this invention can also be applied to other flexible impermeable materials, such as polyvinyl chloride (PVC), ethylene-vinyl acetate copolymer (EVA), butyl rubber, ethylene propylene diene monomer (EPDM), and other flexible barrier materials, depending on the specific engineering requirements.

[0098] The length of the crack to be sealed is generally 0.5-50 cm, and the width is generally 0.5-20 cm. This sealing structure is mainly applicable to linear cracks (such as longitudinal cracks and shear cracks) whose length is greater than their width, but it is not limited to this. For cracks with irregular dimensions, a good sealing effect can also be achieved by reasonably setting the opening size and the shape of the clamping plate.

[0099] Regarding the opening design, the opening length L1 of the flexible barrier layer should be greater than the opening width W1, and the difference between the two should be at least 10 centimeters. This design ensures the integrity of the clamping plate installation space and the sealing area.

[0100] The dimensions of the clamping plate must meet the following relationship to ensure structural strength and sealing effect:

[0101] L2>L1>W2>W1>T

[0102] The length L2 of the clamping plate should be at least 10 cm greater than the opening length L1;

[0103] The width of the clamping plate W2 should be at least 10 cm greater than the opening width W1;

[0104] The opening length L1 should be greater than the clamp width W2, but the difference between the two is generally 1-5 cm;

[0105] The opening width W1 should be greater than the thickness T of the clamping plate, but the difference between the two is generally 1-5 cm;

[0106] The logic behind the above-mentioned size matching is to ensure the clamping area while improving tensile strength, preventing the sealing structure from slipping or shifting, and leaving enough margin to cope with positioning errors and deformations during underwater operations.

[0107] Regarding the connection structure, the upper clamping plate has multiple pre-drilled through-holes, which are straight holes without internal threads; the lower clamping plate has corresponding non-through-holes with pre-machined internal threads to form a locking fit. During actual installation, workers or divers insert bolts sequentially through the bolt holes in the flexible barrier layer and the lower clamping plate, and then tighten them to complete the clamping plate assembly. The number and arrangement of bolts can be flexibly adjusted according to the clamping plate area and structural mechanical requirements.

[0108] To improve ease of operation and underwater positioning efficiency, hook threads can be pre-fabricated between some of the threaded holes in the clamping plates for functions such as temporary slinging, hoisting, guiding and positioning, or fixing auxiliary operating tools, effectively improving construction efficiency and safety.

[0109] The process includes the following steps:

[0110] Underwater leak detection

[0111] A colored solvent (such as a water-dispersible dye) is uniformly sprayed near the suspected leak area of ​​the flexible barrier layer, and the solvent flow trend is observed to determine whether a leak exists and its location. This method is suitable for underwater environments, is non-toxic and environmentally friendly, and poses no harm to construction personnel.

[0112] Surface treatment of flexible barrier layer

[0113] After locating the leak point, clean the surface of the flexible barrier layer around the leak to remove deposits and foreign objects, making the opening area flat for subsequent sealing.

[0114] Opening pretreatment

[0115] A rectangular or near-rectangular inspection opening is made on the flexible barrier layer along the direction of the leakage gap. The opening length L1 should be slightly greater than the gap length, and the opening width W1 should be slightly greater than the gap width, where L1>W1.

[0116] Clamping assembly processing

[0117] Prepare a pair of rigid clamping plate assemblies, including an upper clamping plate and a lower clamping plate, both made of corrosion-resistant material. The clamping plate length L2 should be greater than the opening length L1, the width W2 should be less than the opening length L1, and the thickness T should be less than the opening width W1. Flexible sealing gaskets are fixed to the inner surfaces of the upper and lower clamping plates respectively. The clamping plates are fixed by multiple bolts, with the bolt spacing plus the bolt diameter less than W1, and the bolt holes are pre-drilled in the clamping plates. The number and arrangement of bolts can be adjusted according to the actual opening size.

[0118] Blocking operation

[0119] Insert the lower clamping plate with the flexible gasket under the flexible barrier layer through the opening, and rotate it 90° to align it with the leak area. After adjusting the position of the lower clamping plate until it completely covers the opening, assemble the upper clamping plate on the flexible barrier layer, ensuring the flexible gasket is tightly against the barrier layer to provide a seal and prevent leakage. Then, insert the bolts and tighten them sequentially to secure the upper and lower clamping plates together, ensuring a tight fit between the clamping plate sealing layer and the barrier layer, thus completing the sealing process.

[0120] Seal verification

[0121] Spray the colored solvent again to check for leaks and confirm the integrity of the seal. If there is no leakage of the dye, the sealing is considered successful.

[0122] This utility model's underwater leak detection and sealing process is safe and efficient, and has the following advantages:

[0123] The leak detection method is intuitive and easy to operate, requiring no complex instruments;

[0124] The clamp assembly has a reasonable structural design, which facilitates quick sealing and provides strong sealing performance;

[0125] The materials used are environmentally friendly and corrosion-resistant, making them suitable for long-term underwater service.

[0126] The entire process can be completed underwater by manual or robotic operation, eliminating the need to drain the thermal storage tank and saving costs.

[0127] The barrier layer opening and clamping plate structure of this invention are ingeniously designed, making it particularly suitable for leak sealing operations in underground structures where only one side of the flexible barrier layer is accessible. This is commonly seen when one side of the flexible impermeable layer is an operable space (such as a water tank, water body, or inspection passage), while the other side is an inaccessible area (such as a soil cover, structural infill, or foundation cushion). Under such conditions, traditional double-sided operations or grouting-type sealing are difficult to implement, while the single-sided through-and-clamp sealing technology provided by this invention effectively solves this technical bottleneck.

[0128] Specifically, the barrier layer opening is located on the accessible side. The lower clamping plate is inserted into the back of the flexible barrier layer through this opening and unfolds to cover the opening area by a 90° rotation positioning method, thus forming a preliminary closed structure. Then, the upper clamping plate is installed from the outside and fastened to the lower clamping plate with embedded screw holes by bolts, so that the upper and lower clamping plates exert stable pressure on the flexible barrier layer, clamping and forming an effective seal.

[0129] This structure is not only suitable for maintenance of flexible barrier layers in underwater environments, but also particularly suitable for the following complex underground environments due to its single-sided operation and the ability to insert and deploy clamps:

[0130] The inner side of the flexible impermeable layer is a water storage medium, and the outer side is a natural stratum that cannot be removed or disturbed.

[0131] One side can be operated manually or mechanically, while the other side is limited by the obstruction of soil, concrete or other irregular structures.

[0132] Construction space is limited or high-requirement conditions require minimizing disturbance and excavation.

[0133] This design fully leverages the separability, insertability, and reconfigurability of the clamp structure, achieving efficient sealing in asymmetrical environments through partial openings and overall compression. Furthermore, the use of flexible gaskets, optimized dimensions, and pre-drilled holes significantly enhances overall sealing performance and ease of operation.

[0134] Therefore, this invention not only improves the efficiency of underwater sealing, but also provides a safe, stable and universal solution for the long-term maintenance of flexible barrier layers under the condition of "one-sided operation".

[0135] It should be noted that although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined in the claims of the present invention.

Claims

1. A flexible layer sealing device, characterized in that, The sealing device for the flexible layer includes: A first clamping member is disposed inside the flexible layer after passing through an opening in the flexible layer. The opening is made on the basis of a gap in the flexible layer, and the size of the opening is larger than the size of the gap. The second clamping member is disposed on the outside of the flexible layer and aligned with the first clamping member; A connector that passes through a hole in the second clamping member and is connected and fixed to the first clamping member.

2. The sealing device for the flexible layer according to claim 1, characterized in that, A first flexible pad is disposed between the first clamping member and the flexible layer; and / or, A second flexible pad is also provided between the second clamping member and the flexible layer.

3. The sealing device for the flexible layer according to claim 1, characterized in that, The connecting component is a bolt, and there are two or more bolts. The hole on the second clamping component is a through hole, and the first clamping component is provided with a threaded blind hole or a threaded through hole at the position corresponding to the through hole.

4. The sealing device for the flexible layer according to any one of claims 1-3, characterized in that, The length of the slit is greater than the width of the slit, and correspondingly, the length L1 of the opening is greater than the width W1 of the opening; The length L2 of the first clamping member is greater than the length L1 of the opening, the length L1 of the opening is greater than the width W2 of the first clamping member, and the width W2 of the first clamping member is greater than the width W1 of the opening. Therefore: L2>L1>W2>W1.

5. The sealing device for the flexible layer according to claim 4, characterized in that, The thickness of the first clamping member is T, and the width W1 of the opening is greater than the thickness, that is: W1>T.

6. The sealing device for the flexible layer according to claim 5, characterized in that, The first clamping member passes through the opening in the width direction and is placed inside the flexible layer, and then rotates 90 degrees to cover the opening area.

7. The sealing device for the flexible layer according to claim 4, characterized in that, The length of the gap ranges from 0.5 to 50 centimeters, and the width of the gap ranges from 0.2 to 20 centimeters.

8. The sealing device for the flexible layer according to claim 7, characterized in that, The length L2 of the first clamping member is at least 10 centimeters greater than the opening length L1; The width W2 of the first clamping member is at least 10 centimeters greater than the width W1 of the opening; The length L1 of the opening is greater than the width W2 of the first clamping member, with a difference of 1-5 cm; The width W1 of the opening is greater than the thickness T of the first clamping member, with a difference of 1-5 cm.

9. The sealing device for the flexible layer according to claim 1, characterized in that, The flexible layer is made of a flexible barrier material, which is at least one of the following: polyethylene, polypropylene, polyvinyl chloride, ethylene-vinyl acetate copolymer, butyl rubber, or ethylene propylene diene monomer (EPDM) rubber.

10. The sealing device for the flexible layer according to claim 1, characterized in that, The flexible layer sealing device is used in buried thermal storage ponds, artificial reservoirs or landfills. The inner side of the flexible layer includes any one of a soil cover layer, a structural filler or a foundation cushion layer. The outer layer of the flexible layer is the sealing operation space, which is a water storage tank, a water body or a maintenance passage.

Images