A ceiling type flexible water storage structure suitable for underwater use

Abstract

The application discloses a ceiling type flexible water storage structure suitable for underwater, which comprises a flexible bag, the flexible bag comprises a bag inner membrane and a bag outer membrane; a bandage is arranged on the outer surface of the flexible bag and is used for fixing the position of the flexible bag; a concrete ceiling corresponds to the position of the flexible bag, and the flexible bag is located on the inner side of the concrete ceiling. The application provides a ceiling type flexible water storage structure suitable for underwater, which is arranged in the water area near an island reef, the flexible bag is fixed through an anchor cable and a concrete ceiling, the flexible bag and a breakwater are combined to form necessary conditions for storing fresh water, and the purpose of storing water in the sea near the island reef is achieved; the flexible bag can be flexibly adjusted according to the shape of a storage space, is suitable for irregular seabed topography, has good space adaptability, and is more convenient to transport and install than a rigid water storage tank, and is especially suitable for remote or resource-limited island areas.

Description

Technical Field

[0001] The present invention relates to the technical field of fresh water storage, and in particular to a ceiling-type flexible water storage structure suitable for underwater use. Background Art

[0002] Underwater water storage technology, as an emerging water resource management strategy, demonstrates tremendous development potential. Compared to traditional groundwater storage and reservoir storage, underwater water storage offers unique advantages and features: In terms of space utilization, underwater water storage does not occupy valuable land space and can be deployed over vast areas of the seabed, making it particularly suitable for islands and coastal areas where land resources are scarce. While groundwater storage does not occupy surface space, it is limited by geological conditions and may affect the subsurface hydrological environment. Reservoir storage also requires large tracts of land for construction, significantly impacting the ecological environment and surface land use. In terms of environmental adaptability, underwater water storage, located deep under the sea, is unaffected by weather changes and surface activity, resulting in high stability. In contrast, groundwater storage may be affected by geological activity, such as earthquakes and groundwater level fluctuations. Reservoir storage is susceptible to climate change, such as droughts and floods, and suffers from high evaporation rates. In terms of safety, submarine water storage bladders are more difficult to detect and damage. In terms of economics, underwater water storage may have higher initial construction costs, but lower long-term operating costs, especially in terms of maintenance and protection. Groundwater storage and reservoir storage may require more frequent maintenance and cleaning, increasing long-term costs.

[0003] There are many ways to store fresh water on offshore islands, mainly including the following methods:

[0004] 1. Underground freshwater storage: Some islands utilize underground freshwater lenses for water storage. These lenses are formed by rainfall seeping into the island's subsurface. Low-permeability dielectric materials can be installed in the outer areas of the island to prevent seawater intrusion, significantly increasing underground freshwater reserves.

[0005] 2. Rainwater Harvesting: Rainwater harvesting systems on islands collect and store rainwater through the construction of dams or tanks. Some islands also plan to build underground reservoirs on reclaimed land to store the collected rainwater underground for future use.

[0006] 3. Desalination: Many islands use desalination technology to convert seawater into fresh water to meet their water needs. This method is particularly suitable for small island nations that lack the geographical conditions for freshwater resources.

[0007] 4. Wedge-type wells: Wedge-type wells have become an important method for obtaining fresh water from underground freshwater layers. These wells exploit the density difference between the freshwater layer and the saltwater layer, extracting fresh water resources by digging at a specific depth.

[0008] To this end, in response to the urgent need for fresh water storage on existing offshore islands and reefs, a roof-type flexible water storage structure suitable for offshore islands and reefs is provided, providing a new technical solution for fresh water storage on offshore islands and reefs. Summary of the Invention

[0009] Based on this, it is necessary to provide a roof-type flexible water storage structure suitable for underwater use in response to the above-mentioned technical problems. Flexible bags are arranged in waters near islands and reefs, and the flexible bags are fixed by anchor cables and concrete roofs. The flexible bags and breakwaters are combined to form the necessary conditions for storing fresh water to achieve the purpose of offshore water storage on islands and reefs. The flexible bags can be flexibly adjusted according to the shape of the storage space and are suitable for irregular seabed terrain. The advantage is that they have good spatial adaptability. Compared with rigid water storage tanks, flexible bags are easier to transport and install, and are especially suitable for remote or resource-limited island areas. In addition, the manufacturing and transportation costs of flexible bags are relatively low, and maintenance is simple, which reduces long-term operating costs.

[0010] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0011] The invention discloses a roof-type flexible water storage structure suitable for underwater use, which is used for fresh water storage in offshore areas of islands.

[0012] The underwater flexible roof-type water storage structure specifically includes:

[0013] A flexible bladder bag, comprising an inner bladder membrane and an outer bladder membrane;

[0014] A strap, which is provided on the outer surface of the flexible bladder and is used to fix the position of the flexible bladder;

[0015] A concrete roof corresponding to the position of the flexible bladder, wherein the flexible bladder is located inside the concrete roof, and the concrete roof is used to stabilize the position of the flexible bladder and also to increase the external protection of the flexible bladder;

[0016] An anchor cable, the anchor cable includes a ground anchor, the ground anchor is arranged at the lower part of the concrete ceiling, one end of the ground anchor is fixed to the lower end of the concrete ceiling, and is used to connect the concrete ceiling to play a fixing role; the anchor cable also includes a horizontal anchor chain, the horizontal anchor chain is arranged between the flexible bag and the inner side of the concrete ceiling, one end of the horizontal anchor chain is connected to the binding strap, and the other end of the horizontal anchor chain is connected to the concrete ceiling, and is used to cooperate with the binding strap and the concrete ceiling to simultaneously limit the range of movement of the flexible bag;

[0017] A breakwater is provided at an offshore location, and the flexible bag is located between the breakwater and the island reef;

[0018] A water outlet is provided above the flexible bag, and a water pipe is provided on the water outlet. The end of the water pipe away from the water outlet is connected to a water supply system. The water supply system is located inside the island reef, and the top of the water supply system extends to the outside of the island reef surface. A water inlet and a drainage valve are provided above the water supply system.

[0019] As a preferred embodiment of the underwater ceiling-type flexible water storage structure provided by the present invention, the concrete ceiling includes a network structure composed of concrete arches, columns and beams, multiple concrete arches are evenly distributed, and columns are provided at the ends of the concrete arches. Multiple concrete arches and columns are connected by beams.

[0020] As a preferred embodiment of the underwater ceiling-type flexible water storage structure provided by the present invention, the inner membrane of the sac is made of a hydrophobic material, the outer membrane of the sac is made of a corrosion-resistant and puncture-resistant material, the water pipe includes an inner layer and an outer layer, the inner layer is a nitrile water-resistant rubber tube, and the outer layer is made of a corrosion-resistant and puncture-resistant material.

[0021] As a preferred embodiment of the underwater ceiling-type flexible water storage structure provided by the present invention, the horizontal anchor chain includes a connecting beam, and the number of the connecting beams is two. The two connecting beams are connected by multiple chains, and the ends of the connecting beams are fixedly connected to connecting end seats. The ends of one of the connecting beams are detachably fixedly connected to the binding straps by the connecting end seat matching bolts, and the end of the other connecting beam is detachably fixedly connected to the concrete ceiling by the connecting end seat matching bolts.

[0022] As a preferred embodiment of the underwater ceiling-type flexible water storage structure provided by the present invention, a protective sheet is provided on the inner side of the strap and at a position corresponding to the connection end seat, and both ends of the protective sheet are fixedly connected to the strap.

[0023] As a preferred embodiment of the ceiling-type flexible water storage structure suitable for underwater use provided by the present invention, the ground anchor includes a submerged anchor beam, and stable anchor frames are provided at the lower parts of both ends of the submerged anchor beam. A connecting seat is provided at the upper part of the submerged anchor beam, and the connecting seat is connected to the submerged anchor beam by a chain. The number of the connecting seats is the same as the number of concrete ceiling columns.

[0024] As a preferred embodiment of the ceiling-type flexible water storage structure suitable for underwater use provided by the present invention, the connecting seat includes a connecting plate, which is detachably fixedly connected to the concrete ceiling by bolts, and the lower end of the connecting plate is fixedly connected to a protective frame, and a limiting groove is provided in the middle of the protective frame, and one end of the chain connecting the connecting seat and the submerged anchor beam passes through the limiting groove and is fixedly connected to the connecting plate.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The present invention provides an underwater ceiling-type flexible water storage structure, in which flexible bags are arranged in waters near islands and reefs, and the flexible bags are fixed by anchor cables and a concrete ceiling. The flexible bags and breakwaters are combined to form the necessary conditions for storing fresh water, thereby achieving the purpose of storing water near islands and reefs. The flexible bags can be flexibly adjusted according to the shape of the storage space and are suitable for irregular seabed terrain. The advantage is that they have good spatial adaptability. Compared with rigid water storage tanks, flexible bags are easier to transport and install, and are particularly suitable for remote or resource-limited island areas. In addition, the manufacturing and transportation costs of the flexible bags are relatively low, and the maintenance is simple, which reduces long-term operating costs.

[0027] The present invention provides a flexible underwater roof-type water storage structure. Compared with traditional island and reef water storage, the underwater flexible bag not only has the advantages of general underwater water storage devices, but also has less interference with the seabed ecological environment, which is beneficial to protecting the marine ecological balance. At the same time, the flexible bag utilizes the density difference between freshwater and seawater to achieve a non-powered water transfer process, saving energy and reducing costs. The construction cost of the flexible bag is lower than that of groundwater storage, seawater desalination storage, and well storage. It mainly includes underwater anchor cables and concrete roof fixation, as well as the construction of breakwaters. The maintenance cost is also relatively low, mainly requiring regular inspection and cleaning. The flexible bag itself is low-cost and easy to construct and deploy. Underwater storage can achieve maximum fire, explosion, and evaporation protection. At the same time, the flexible bag is more stable underwater, has good corrosion resistance, and has a certain degree of ductility to protect itself. Given my country's vast sea area and numerous islands, the flexible bag underwater water storage structure has the advantages of low cost, simple installation and maintenance. The flexible bag water storage model is environmentally friendly and has great potential for water storage development.

[0028] The present invention provides a ceiling-type flexible water storage structure suitable for underwater use, which uses ground anchors and horizontal anchor chains to stabilize the flexible bag under the concrete ceiling, and provides straps on the surface of the flexible bag to increase the force-bearing area of ​​the flexible bag and reduce the situation where stress concentration damages the flexible bag.

[0029] The present invention provides a flexible underwater roof-type water storage structure. The greatest advantage of the concrete roof is that it offsets the buoyancy difference between the flexible bladder and the seawater, thereby stabilizing the flexible bladder underwater. The concrete roof, in conjunction with anchor cables and breakwaters, provides multi-dimensional protection for the flexible bladder, reducing safety hazards caused by impact loads. The ground anchors connected to the concrete roof limit the flexible bladder's floating range to below the concrete roof and above the seabed, reducing wear and damage caused by friction between the flexible bladder and the seabed, and also reducing the impact of soft-bodied organisms attaching to the seabed. The straps fit snugly around the flexible bladder, providing a close-fitting layer of protection, reducing stress levels and distributing the force over a large area, thus providing protection against wave-induced water shock. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the solutions in the present invention, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] Figure 1 A schematic diagram of the water filling process of the underwater ceiling-type flexible water storage structure provided by the present invention;

[0032] Figure 2 A schematic diagram of the drainage process of the underwater ceiling-type flexible water storage structure provided by the present invention;

[0033] Figure 3 A structural side view of a concrete roof of a flexible underwater water storage structure provided by the present invention;

[0034] Figure 4 A structural front view of a concrete roof of a flexible underwater water storage structure provided by the present invention;

[0035] Figure 5 A top view of the concrete roof of the underwater flexible water storage structure provided by the present invention;

[0036] Figure 6 A schematic structural diagram of a horizontal anchor chain for a ceiling-type flexible water storage structure applicable to underwater use provided by the present invention;

[0037] Figure 7 A schematic diagram of the structure of a protective sheet of a ceiling-type flexible water storage structure suitable for underwater use provided by the present invention;

[0038] Figure 8 A schematic diagram of the structure of a ceiling-type flexible water storage structure anchor applicable to underwater use provided by the present invention;

[0039] Figure 9This is a structural schematic diagram of the underwater ceiling-type flexible water storage structure connection seat provided by the present invention.

[0040] The markings in the figure are as follows:

[0041] 1. Flexible bladder; 2. Strap; 3. Concrete roof; 4. Horizontal anchor chain; 5. Ground anchor; 6. Water pipe; 7. Water supply system; 8. Breakwater; 9. Water inlet; 10. Drain valve; 11. Connecting beam; 12. Connecting end seat; 13. Water outlet; 14. Island reef; 15. Protective sheet; 16. Submerged anchor beam; 17. Connecting seat; 18. Stable anchor frame; 19. Connecting plate; 20. Protective frame; 21. Limiting slot. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0043] Example 1:

[0044] Please refer to Figure 1 - Figure 5 , a ceiling-type flexible water storage structure suitable for underwater use, comprising:

[0045] A flexible bladder bag 1, comprising an inner lining of the bladder and an outer lining of the bladder;

[0046] A strap 2 is provided on the outer surface of the flexible pouch 1 and is used to fix the position of the flexible pouch 1;

[0047] A concrete roof 3, which corresponds to the position of the flexible bag 1. The flexible bag 1 is located inside the concrete roof 3. The concrete roof 3 is used to stabilize the position of the flexible bag 1 and also to increase the external protection of the flexible bag 1.

[0048] The anchor cable, specifically, includes a ground anchor 5, which is arranged at the lower part of the concrete ceiling 3, one end of the ground anchor 5 is fixed to the lower end of the concrete ceiling 3, and is used to connect the concrete ceiling 3 to play a fixing role; the anchor cable also includes a horizontal anchor chain 4, which is arranged between the flexible bag 1 and the inner side of the concrete ceiling 3, one end of the horizontal anchor chain 4 is connected to the strap 2, and the other end of the horizontal anchor chain 4 is connected to the concrete ceiling 3, and is used to cooperate with the strap 2 and the concrete ceiling 3 to simultaneously limit the range of movement of the flexible bag 1; the flexible bag 1 is fixed in the sea water below the concrete ceiling 3 by the strap 2 and the horizontal anchor chain 4;

[0049] The breakwater 8 is located offshore, and the flexible bag 1 is located between the breakwater 8 and the island 14. Its main function is to reduce the dynamic water load of the seawater to ensure the safety and stability of the structure. The anchor 5 is set on the seabed between the breakwater 8 and the island 14.

[0050] A water outlet 13 is provided above the flexible bag 1, and a water pipe 6 is provided on the water outlet 13. The end of the water pipe 6 away from the water outlet 13 is connected to a water supply system 7. The water supply system 7 is located inside the island reef 14, and the top of the water supply system 7 extends to the outside of the surface of the island reef 14. A water inlet 9 and a drainage valve 10 are provided above the water supply system 7.

[0051] like Figure 3-Figure 5 As shown, the concrete roof 3 comprises a lattice structure of concrete arches, columns, and beams. Multiple concrete arches are evenly distributed, each with a column at its end. The multiple concrete arches and columns are connected by beams. The layout density of these components is designed based on the volume of the flexible bladder 1 and the required buoyancy of the concrete roof 3 in water. A water pipe 6 can pass through the openings of the concrete roof 3 (i.e., the gaps between the concrete arches), connecting the water outlet 13 of the flexible bladder 1 to the water supply system 7. The density of the concrete arches and beams must be adjusted according to actual needs. If they are arranged too sparsely, their weight will be less than the buoyancy of the flexible bladder 1 and the concrete roof 3 in water, failing to balance the buoyancy of the bladder. If they are arranged too densely, excessive material will be consumed, and the overly heavy structure may cause the bottom to sink, potentially leading to accidents. Therefore, the design of the concrete roof 3 should be based on the volume of the flexible bladder 1.

[0052] The flexible bladder 1 is connected to the concrete roof 3 at multiple points by means of straps 2 and a plurality of horizontal anchor chains 4. The concrete roof 3 can be fixed directly to the seabed or fixed to the seabed by means of retractable anchor cables.

[0053] Furthermore, the inner membrane of the capsule is made of a hydrophobic material, the outer membrane of the capsule is made of a corrosion-resistant and puncture-resistant material, the water pipe 6 includes an inner layer and an outer layer, the inner layer is a nitrile water-resistant rubber tube, and the outer layer is made of a corrosion-resistant and puncture-resistant material.

[0054] The material selection of the water pipe 6 is similar to that of the flexible bladder 1. Its tube wall is composed of two layers, an inner layer and an outer layer. The inner layer of the tube has an isolation function and can effectively prevent water leakage from polluting the marine environment or ion penetration from the outside of the bladder, which causes water quality to deteriorate. The outer layer of the tube has a protective function and has sufficient strength, toughness and corrosion resistance to protect the inner layer from damage under the action of hydraulic pressure and wave pressure. Unlike the flexible bladder 1, the material of the water pipe 6 can be selected with less flexibility and higher rigidity. The inner layer of the tube is made of nitrile water-resistant rubber tube, which has excellent water resistance and can be used at a temperature of up to 120 degrees Celsius for long-term use. It also has good low-temperature performance and a glass transition temperature of up to -55 degrees Celsius. As the nitrile content increases, the ductility and tensile strength of the rubber tube will increase, but the resilience and low-temperature resistance will decrease. This does not affect its water resistance. Its water resistance is far superior to other types of rubber tubes, such as EPDM rubber tubes and silicone tubes.

[0055] The flexible bladder 1 features a double-layer design, consisting of an outer membrane and an inner membrane. The inner membrane provides isolation, effectively preventing water infiltration and corrosion. Its primary purpose is to prevent internal water leakage from polluting the marine environment and external ion penetration from degrading water quality. The outer membrane, on the other hand, provides protection, possessing the necessary strength, toughness, and corrosion resistance to ensure it remains intact under hydraulic and wave pressure.

[0056] In the embodiment, the inner lining of the bladder is made of a high-density polyethylene (HDPE) barrier membrane, which exhibits excellent acid, alkali, and corrosion resistance, resisting corrosion from over 80 strong acids and bases. It offers excellent barrier properties, with a water vapor permeability coefficient (K) less than or equal to 1.0 × 1013 g cm / (cm-s-Pa). It also exhibits excellent low-temperature resistance, with a brittle temperature between -60 and -70°C, and excellent high-temperature resistance, with a melting point between 110 and 120°C. This material offers low overall cost, excellent corrosion and anti-seepage properties, and is leak-proof.

[0057] Compared with traditional coastal water storage methods, for example, the construction cost of seawater desalination for water intake usually ranges from several million to several billion yuan, depending on the scale and technology of the desalination plant. The operating cost is about 3.5 to 9 yuan per cubic meter of fresh water, mainly depending on the energy price and desalination technology. For rainwater collection and storage, the construction cost is between several hundred thousand and several million yuan, and the operating cost is mainly for the maintenance and cleaning of the system. For underground fresh water storage, the construction cost is medium, probably several million to tens of millions of yuan, and the operating cost is mainly for the monitoring and maintenance of the water source. If the water storage method is to ship fresh water, generally high operating costs need to be borne. For islands far from the mainland, the cost is as high as several hundred yuan per cubic meter. The solution proposed by the present invention is to arrange flexible bladder 1 in water, use high-strength and corrosion-resistant TPU material as the bladder body (bladder outer membrane), with a volume of 50 cubic meters and a price of about 10,000 yuan per unit, utilize the underwater space, and there is no need for land acquisition and construction costs of water storage sites, thus greatly reducing the device cost.

[0058] The water storage process is as Figure 1 shown. By lifting the water injection port 9 of the water delivery system 7 to a certain height, using the water head difference between the water injection port 9 and the flexible bladder 1, automatic water injection without power is achieved.

[0059] The drainage process is as Figure 2 shown. By lowering the water injection port 9, due to the density difference between fresh water and seawater, a pressure difference is generated inside and outside the flexible bladder 1, enabling the water to automatically rise along the water delivery system 7 to the ground of the island reef 14 under the action of the external seawater pressure, achieving automatic drainage using the hydrostatic pressure, thereby reducing energy consumption.

[0060] In the present invention, the height of the water injection port 9, the position of the drainage valve 10, and the underwater placement depth of the flexible bladder 1 are interrelated. According to the principle of hydraulic balance, during the water injection process, it is ensured that the water pressure above is greater than the water pressure below, that is, P fresh water > P seawater; during the drainage process, it is ensured that the water pressure above is less than the water pressure below, that is, P fresh water < P seawater; in addition to the water pressure difference, the influence of wave loads on the flexible bladder 1 in seawater needs to be considered. According to the linear wave theory, the wave surface elevation at any point p(x,y) in the wave field;

[0061]

[0062] According to the liquid pressure calculation formula, considering the action of wave pressure, there is:

[0063] During water injection:

[0064] During water discharge:

[0065] Wherein, h is the velocity potential of the incident wave, pfreshwater is the density of the stored water; pseawater is the local seawater density; g is the local standard acceleration of gravity; H is the vertical distance from the bottom of the flexible bag 1 to the sea level; h1 is the vertical distance from the drain valve 10 to the sea level; h2 is the vertical distance from the drain valve 10 to the water inlet 9; Z is the wave surface elevation; k is a coefficient related to the wave period; and R is the polar coordinate radius of the selected point in the wave field.

[0066] These parameters indicate that the greater the difference between the density of the stored water and the density of seawater, the deeper the flexible bladder 1 is secured in the sea, or the greater the wave pressure, the higher the required water filling height. If the filling height is insufficient, the water pressure will not be able to overcome the seawater pressure and wave pressure, rendering the filling operation impossible. However, the height of the water delivery tower should also be limited, as otherwise, it will increase the difficulty of delivering water to the water inlet 9, making the operation more time-consuming and labor-intensive.

[0067] The embodiments of the present invention are not limited to the above description, and other implementations are possible. Any technical solution formed by equivalent replacement or equivalent transformation is within the scope of protection of the present invention.

[0068] Example 2:

[0069] The underwater flexible roof-type water storage structure provided in Example 1 is further optimized. Specifically, Figure 6-Figure 7 As shown, the horizontal anchor chain 4 includes two connecting beams 11, and the two connecting beams 11 are connected by multiple chains. The ends of the connecting beams 11 are fixedly connected to the connecting end seats 12. The end of one of the connecting beams 11 is detachably fixedly connected to the binding 2 through the connecting end seat 12 and the matching bolts, and the end of the other connecting beam 11 is detachably fixedly connected to the concrete ceiling 3 through the connecting end seat 12 and the matching bolts.

[0070] Furthermore, in order to reduce the wear of the bolts on the flexible bag 1, a protective sheet 15 is provided on the inner side of the strap 2 and at a position corresponding to the connecting end seat 12. Both ends of the protective sheet 15 are fixedly connected to the strap 2. The protective sheet 15 prevents the bolts from directly contacting the flexible bag 1, thereby reducing the occurrence of severe wear and tear of the flexible bag 1 leading to rupture.

[0071] Example 3:

[0072] The underwater flexible roof-type water storage structure provided in Example 1 is further optimized. Specifically, Figure 8-Figure 9As shown, the ground anchor 5 includes a submerged anchor beam 16, with stabilizing anchor frames 18 provided at the lower ends of each end of the submerged anchor beam 16. A connecting seat 17 is provided at the upper portion of the submerged anchor beam 16. The connecting seat 17 is connected to the submerged anchor beam 16 via a chain. There are multiple chains between each connecting seat 17 and the submerged anchor beam 16, and the number of connecting seats 17 is the same as the number of columns of the concrete ceiling 3. The submerged anchor beam 16 is buried at the bottom of the seabed. The stabilizing anchor frames 18 enhance the stability of the submerged anchor beam 16. The connecting seats 17 connect each column of the concrete ceiling 3, thereby limiting the movement of the concrete ceiling 3.

[0073] Furthermore, the connecting seat 17 includes a connecting plate 19, which is detachably fixed to the concrete ceiling 3 by bolts. The lower end of the connecting plate 19 is fixedly connected to a protective frame 20, and a limiting groove 21 is provided in the middle of the protective frame 20. One end of the chain connecting the connecting seat 17 and the anchor beam 16 passes through the limiting groove 21 and is fixedly connected to the connecting plate 19. The protective frame 20 protects the end of the chain connected to the connecting plate 19 and reduces the range of motion of the chain end.

Claims

1. A ceiling-type flexible water storage structure suitable for underwater use, characterized in that: include: A flexible bladder bag (1), comprising an inner bladder membrane and an outer bladder membrane; A binding strap (2) is provided on the outer surface of the flexible bladder (1) and is used to fix the position of the flexible bladder (1); A concrete roof (3) corresponding to the position of the flexible bag (1), the flexible bag (1) being located on the inner side of the concrete roof (3), the concrete roof (3) being used to stabilize the position of the flexible bag (1) and also being used to increase external protection of the flexible bag (1); An anchor cable, the anchor cable comprising a ground anchor (5), the ground anchor (5) being arranged at the lower part of the concrete ceiling (3), one end of the ground anchor (5) being fixed to the lower end of the concrete ceiling (3), and being used to connect the concrete ceiling (3) and play a fixing role; the anchor cable further comprising a horizontal anchor chain (4), the horizontal anchor chain (4) being arranged at a position between the flexible bag (1) and the inner side of the concrete ceiling (3), one end of the horizontal anchor chain (4) being connected to the binding belt (2), and the other end of the horizontal anchor chain (4) being connected to the concrete ceiling (3), and being used to cooperate with the binding belt (2) and the concrete ceiling (3) to simultaneously act to limit the range of movement of the flexible bag (1); A breakwater (8) is provided at an offshore location, wherein the flexible bag (1) is located between the breakwater (8) and the island reef (14); A water outlet (13) is provided above the flexible bag (1), a water pipe (6) is provided on the water outlet (13), an end of the water pipe (6) away from the water outlet (13) is connected to a water delivery system (7), the water delivery system (7) is located inside the island reef (14), and the top of the water delivery system (7) extends to the outside of the surface of the island reef (14), and a water inlet (9) and a drainage valve (10) are provided above the water delivery system (7); The concrete ceiling (3) comprises concrete arches, columns and beams to form a mesh structure, wherein a plurality of the concrete arches are evenly distributed, columns are provided at the ends of the concrete arches, and the plurality of the concrete arches and columns are connected by beams; The inner membrane of the bladder is made of a hydrophobic material, the outer membrane of the bladder is made of a corrosion-resistant and puncture-resistant material, the water pipe (6) comprises an inner layer and an outer layer, the inner layer is a nitrile water-resistant rubber tube, and the outer layer is made of a corrosion-resistant and puncture-resistant material; The horizontal anchor chain (4) includes a connecting beam (11), the number of the connecting beams (11) is two, the two connecting beams (11) are connected by a plurality of chains, the ends of the connecting beams (11) are fixedly connected to the connecting end seats (12), the ends of one of the connecting beams (11) are detachably fixedly connected to the binding belt (2) through the connecting end seat (12) and the matching bolts, and the end of the other connecting beam (11) is detachably fixedly connected to the concrete ceiling (3) through the connecting end seat (12) and the matching bolts; A protective sheet (15) is provided on the inner side of the binding belt (2) and at a position corresponding to the connection end seat (12), and both ends of the protective sheet (15) are fixedly connected to the binding belt (2).

2. The underwater ceiling-type flexible water storage structure according to claim 1, characterized in that: The ground anchor (5) comprises a submerged anchor beam (16), the lower parts of both ends of the submerged anchor beam (16) are provided with stable anchor frames (18), the upper part of the submerged anchor beam (16) is provided with a connecting seat (17), the connecting seat (17) and the submerged anchor beam (16) are connected by a chain, and the number of the connecting seats (17) is the same as the number of columns of the concrete ceiling (3).

3. The underwater flexible roof-type water storage structure according to claim 2, characterized in that: The connecting seat (17) includes a connecting plate (19), and the connecting plate (19) is detachably fixedly connected to the concrete ceiling (3) by bolts. The lower end of the connecting plate (19) is fixedly connected to a protective frame (20), and a limiting slot (21) is provided in the middle of the protective frame (20). One end of the chain connecting the connecting seat (17) and the submerged anchor beam (16) passes through the limiting slot (21) and is fixedly connected to the connecting plate (19).

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