JPH0575639B2 - - Google Patents

Description

[Detailed Description of the Invention] Currently, the amount of precipitation on each land on the earth is determined by its land topography and the climate zone to which it belongs. There are also areas with surplus.

The present invention utilizes the vast space of the ocean on coastal land where there is an extreme water shortage within such location conditions, and also produces seawater and freshwater that have the same physical properties just by changing the content of the ingredients. A huge artificial lake-like freshwater storage device can be created at an extremely low cost using a simple structure that stores a large amount of freshwater by simply separating it with a thin plastic film and suspending it on top of the seawater. It is a base that can stably supply a large amount of fresh water to the land coastal areas near where the equipment is installed over a year-round period. made possible.

However, unlike offshore oil storage tanks, this kind of water storage system does not allow for the storage contents to be blown away to the sea by wind and waves, or for fresh water to flow into sea water due to slight damage to the bag. Even if seawater flows into the freshwater side, it will not have any negative impact on the natural environment, and it is safe for seabirds to land on freshwater surfaces.On the other hand, even if a small amount of seawater enters the freshwater side as spray, or in large quantities. Even if there is rainfall, it will not be a problem. Therefore, there is no need for a lid on the fresh water storage device constructed in this manner, and a simple and simple structure using relatively inexpensive plastic film is sufficient for the lake bag.

However, the ocean is not always calm, and during storms it is accompanied by waves with a large amount of energy, so any artificial water storage device made of thin film will likely be damaged.

Therefore, in the present invention, in advance of a storm, based on highly accurate weather information using artificial satellites, etc.,
While discharging the fresh water stored inside the structure into the sea, the structure of the lake-like bag that stores the fresh water is allowed to sink to the sea floor where the waves are calm, and waits for the storm to pass. The structure will be floated out to sea again and fresh water will be injected to restore the fresh water storage system to its original state.

In order to meet these requirements, the present invention first erects a large number of pillars in the sea at a depth that does not interfere with construction near the shore, and has a bellows-shaped side wall inside the ring of the pillar group. A large lake-shaped bag with a bottom and no lid (hereinafter referred to as a lake bag) is arranged, and a floating bladder is arranged in a ring around the entire upper edge of the lake bag, so that the upper edge of the lake bag is below the water surface. In addition to supporting the lake above the sea surface, it also serves as a barrier to prevent water from entering and exiting the lake bag.

In particular, the present invention is characterized by the fact that supports are provided in order to always safely protect the lake bag, which is made of a thin film that is easily damaged due to water agitation due to waves or deformation or twisting of the entire lake bag due to tidal currents. A support plate that mediates between the side wall of the bag and the support in the sea between the groups is fixed from the outside of the lake bag using special fastening means such as folded rods or clips, and then the fresh water injected into the bag is When the bottom of the lake bag moves up and down depending on the amount of water, the supporting plate that holds the bellows-shaped side wall of the lake bag slides only up and down along the pillar, preventing the bottom of the lake bag from drifting sideways or twisting in the sea. Furthermore, since the water inside the bellows maintains a free water level under normal conditions, when the upper edge of the lake bag moves up and down in sync with the waves near the sea surface, By keeping the spacing between the supporting plates of each layer equal due to the time delay in which water enters and exits through the small holes in the upper and lower parts of the bellows, the bellows-shaped part of the side wall of the lake bag is also opened evenly, and the side wall film is partially exposed. Durability is ensured by preventing the application of abnormal external forces.

In addition, the upper end of the bellows is a valve that can be opened and closed at any time by remote control from the onshore control room as needed, and the water inside the bellows is fed to a pump in the onshore control room via a pipe from the control freshwater pond. When a storm approaches, the air from the water surface air bladder that floats the top support plate can be removed by remote control, the bellows upper end valve can be closed by remote control, and at the same time the air supply and drainage can be carried out in conjunction with the pipe. It also has the role of contracting the bellows by drawing negative pressure on the fresh water inside the bellows, and quickly sinking the lake bag into the sea with the help of its own weight.

In this way, the configuration and operation of dumping the contents into the sea and temporarily sinking and evacuating the lake bag as a storage tank into the sea are completely unthinkable in an oil offshore storage facility, and it is impossible to imagine such a structure and operation in the case of offshore oil storage facilities. The bag has an open-top structure with the top completely open, and is fundamentally different from the structure of offshore oil storage tanks.

Naturally, since the lake body was temporarily evacuated to the seabed in this way, after the storm had passed, the inside of the bellows remained under negative pressure, and a water surface air float bladder and an auxiliary sea air system were installed as needed. It sends compressed air to the swim bladder to float the entire lake bag as close to the sea surface as possible to remove seawater, and then injects fresh water into the bellows, allowing the bellows to expand and return to the surface. Therefore, a fresh water storage device can be obtained.

Hereinafter, embodiments of the floating fresh water storage device according to the present invention will be described in detail.

FIG. 1 is a detailed sectional view showing a part of the structure of the present invention, FIG. 8 is a sectional view that clearly shows the overall structure, and similarly, FIG. 11 is a plan view showing the outline. be. In other words, in brief, freshwater 2, which has a specific gravity lower than seawater 1, is placed in the ocean at an appropriate depth, where the seabed 3 is not too shallow and is deep enough for the construction of the present invention, and is made of strong material such as polycarbonate film. An artificial fresh water storage device was constructed in the form of a huge container with the bottom and entire circumference glued to it using a plastic film lake bag 4 that has a certain degree of flexibility and is easy to glue. The plastic film lake bag 4 is then filled with fresh water 2 brought from elsewhere, and although there is a difference in specific gravity between seawater 1 and fresh water 2, the free water surfaces 1' and 2' of both seawater 1 and fresh water 2 are Build a huge floating freshwater storage device on the ocean so that the amount of water remains approximately the same at all times.

Next, to describe the method for manufacturing the lake bag for this freshwater water storage device, it is prepared as a long film of an appropriate width that is rolled up in advance at the manufacturing factory, the first roll is first spread out on the sea surface on site, and the second Stretch out the second roll right next to it so that the long sides slightly overlap each other to form a glue margin, and place a floating pillow from below to prevent the glue surface from getting wet with seawater. Lift slightly more. The length of the floating pillow must correspond to the long side of the stretched roll film, that is, the length of the adhesive surface.

When the bonding conditions such as overlapping of the adhesive side and drying are completed, adhesive (methylene chloride) is injected into the overlapping area (glue area) of the upper and lower films using a device equipped with a special nozzle, and then immediately pressed with a roll to promote adhesion. let

The floating pillow is floated and sunk by pumping seawater in and out of a large number of pipes installed inside the pillow. Further, floating and sinking is also necessary under the second roll in order to spread the second roll on the sea surface and obtain an overlapping adhesive surface of the correct width between the second roll and the first roll.

Most of the film corresponding to the other three non-adhered sides of the first roll and second roll film is spread floatingly on the sea surface, but its specific gravity is lighter (lower concentration) than the polycarbonate film's specific gravity of 1.2.
For expansion on seawater, a floating net made of string-like foamed plastic welded into a flat net shape is used to catch the net from below and float on the sea surface. Bonding work can be done while floating on the salt water.

In this way, the 3rd to nth rolls are pulled out one after another, stretched out on the sea surface and glued together, and eventually become a large square with the same length and width (in the normal case). Lake bag bottom 4'
can be created above the local sea surface.

Next is the installation of the four side walls 4" with zigzag folds (also called zigzag folds) in cross section, but in order to accurately create the zigzag folds on the film in advance, this cannot be done unless you are at a film manufacturing factory. After manufacturing the roll film, during the manufacturing process, the film of the length corresponding to one side of the lake bag bottom 4' is folded vertically (lengthwise) in a zigzag manner. Since it cannot be folded in any direction, it has an elongated box shape that is the same length as the floating pillow mentioned above, and has a narrow gap along the entire length of one of its long sides, and can be folded inward for storage as needed. One long side of the film is pulled out, and the film is placed in a floating cassette that can be unrolled little by little or that can be mounted on a floating pillow, and then towed to the site. The side walls 4'' of the lake bag 4 are formed by gluing them to the four sides of the lake bag bottom 4' on the sea surface using the same method as when making the lake bag 4.

In addition, the four corner parts of the side wall 4'' are similar to the bellows of the well-known extendable camera and its close-up device, and are formed into a folding structure at the manufacturing factory and then loaded onto a ship and transported to the site. 4" little by little, and glue it to the side walls 4" and 4" of both wings at the same time from the bottom, and form a large lake bag 4.
complete.

When forming the side wall 4'' of the lake bag 4, the construction work can proceed smoothly by injecting fresh water into the lake bag 4 and adjusting the degree of sedimentation of the lake bag bottom 4'.

As described above, the lake bag 4 is made by making full use of adhesive technology, but the wide true horizontal surface of the seawater plays the role of an important ruler and workbench for carrying out the adhesive work.

Also, as a condition to regulate the size of this water storage device, a zigzag folding section is required, and a cassette (also necessary during construction) to store the folded side wall 4''.
The floating pillows needed to adhere long films on their long sides are all long pieces that correspond to one side of the bottom 4' of the lake bag, but when these are towed from the home port to the site, it is difficult to maneuver the ship. Due to this, the size of the fresh water storage device that is suspended on the sea surface must also be within a certain range.

The most important part of the construction work for this device is the work of gluing the four Lake Bag films together, so the work is carried out during the year when the weather is calm from a meteorological point of view. In order to minimize disturbances, it is natural to carry out construction work with a fence to prevent waves. Also, when trying to overcome the terrain and wind direction to some extent,
It would be even better if we could protect ourselves with a large floating breakwater, which is already in practical use, so that the waves coming from the coast can be weakened even a little. The water storage device can be protected from wind and waves.

However, seawater is constantly flowing, with gentle ocean currents occurring due to the effects of the Earth's rotational force and wind power, and tidal phenomena occurring in coves and bays due to the gravitational pull of the moon and the sun. There is. Therefore, if the fresh water 2 is simply trapped in the lake bag 4 and suspended on the seawater 1, the fresh water storage bag will move and be washed away. Therefore, pillars 5 are erected at appropriate intervals around the outer circumference of the lake bag 4, and the lower ends of the pillars 5 are fixed to the seabed 3 by concrete foundations 6. In addition, the lake bag 4 floating on the sea becomes flat or heavy depending on the amount of fresh water 2 filled in it, but the upper edge of the lake bag 4 can sufficiently play the role of a bulkhead. Since the lake is always kept at a constant height above the sea, the bottom 4' of the lake bag 4 moves up and down to correspond to the amount of fresh water. Therefore, in order to absorb the vertical movement of the bottom 4' and prevent excessive force from being applied to the extreme parts of the film constituting the lake bag 4, the entire side wall 4'' of the lake bag 4 is folded in a bellows style. Create a structure that allows you to do so.

In addition, the connection between the lake bag wall 4'' and the pillar 5 is made by the method described below.That is, the pillar 5 has a cross section as shown in the figure, for example, and a cross hole 9 is connected to the pillar 5.
As shown in the figure, a large number of support plates 7 are inserted into the cross-shaped holes 9 with the pillars 5 passing through them.The support plates 7 cannot be rotated horizontally due to the cross-section pillars, but can be slid up and down. There is a gap between the cross hole 9 and the support post 5, and the support plate 7 is inserted from four directions so that the support plate 7 can slide up and down along the support post 5 while maintaining the gap at equal intervals in the front, rear, left, and right directions. A sliding wheel 10 attached to the edge of the cross hole 9 presses against the side surface of the column from all directions.

This support plate 7 is provided with bellows 8 on both sides of the support column 5 between the upper and lower parts to connect the upper and lower support plates 7, 7, etc., and the uppermost support plate 7 is longer and stronger than the others. Bellows 8, 8 float above the water surface 1', 2' by means of water surface air bladders 11 provided on both sides directly below the bellows 8, 8...
and each support plate 7, 7 are supported in a suspended state.

The end of each support plate 7 on the lake bag 4 side constructed in this way is a bent portion of the plastic film that is bent so as to protrude toward the seawater 1 side on the bellows-shaped side wall 4'' of the lake bag 4. A cylindrical crease rod 12 made of metal, hard plastic, etc. is inserted into the entire inside of the bag, and the plastic film forming the lake bag 4 wraps the rod, and the outside of the rod is made of semi-hard, elastic plastic, etc. A covering tube 13 with a C-shaped cross section made of is fitted and covered, and is first temporarily secured to the side of each support plate 7 with a pliers-shaped gripping tool 14 that can be secured with a bolt or nut, etc. Secure the film 4 of the lake bag by pinching it from above the cover tube 13 that has been prepared.In this case, the outer surface of the folding rod 12 and the inner surface of the cover tube 13 should be smooth so that the film 4 of the lake bag is not damaged. In addition, if the crease rod 12 is made of metal, rust-proofing treatment is performed.

In addition, the bent portion of the lake bag 4 that is bent inward and protrudes toward the freshwater 2 side is similar to that of the film 4.
Insert the crease bar 12' with the fixing protrusion 18 into the inside of the fold, wrap the top with the plastic film of the lake bag 4, and then place the crimp bar 13' on top of it.
Fit and cover the clothespin-shaped spring 1 from above.
The film is held at an appropriate distance by a large clip 16 having a diameter of 5, but since the other end of the clip 16 is not fixed anywhere, the folded part of the film on the freshwater 2 side can freely float in the freshwater. becomes. However, due to water pressure inside and outside the lake bag 4, this part sometimes bends and protrudes toward the seawater 1 side, and in order to prevent the bellows shape from deforming into an incorrect shape, seawater 1
At the side, one end of a tension arm 17 is attached to both ends of the cover tube 13 so as to be able to freely rotate, and the other end of this arm 17 is also freely rotatable on the protrusion 18 of the aforementioned protruded crease rod 12'. Attach it as much as possible.

Further, the bellows 8 between the support plates 7 are connected to each other through water passage holes 19 provided in the support plate 7 so that the inner spaces can pass water vertically, and the bellows 8 at the lowest end is connected to the support plate 7 below. The bellows water supply and drainage pipe 20 located directly below the bellows is connected to the bellows 8, 8, which are installed in the same direction on the adjacent pillars, so that water can flow between them, and the bellows water supply pipe 20 is finally As shown in FIGS. 12 and 13, as part of a control system 21, the signal is guided to a control device 21' in a control shed 23 located on land to the left of the beach line 22 in both figures.
Further, the upper end of the bellows 8 has an adjustment exhaust hole 24 above it via the water passage hole 19 of the upper support plate 7 located above the bellows 8, and the exhaust hole 24 is in the atmosphere during normal times when water is stored. Leave it open to.

During normal use, the water surface air bladders 11 attached to the lower surface of both ends of the upper support plate 7' are inflated by pressure, and the buoyancy causes the bellows 8, 8, etc., which slide up and down along the support column, and The side wall 4'' of the lake bag 4, which has bellows-like folds that can freely expand and contract up and down, and the bottom 4' of the lake bag 4 are suspended above the water surface 1' and 2', and serve to support them above the water surface 1', 2'. 2 is supplied from the fresh water supply pipe 26 and the amount of stored water increases, or the amount of fresh water 2 used on land increases and the fresh water supply pipe 28 with the hood valve 28'
When the amount of fresh water in the lake bag 4 changes, such as when a large amount of water 2 is sucked out by the water pump 25' and the stored water volume decreases, the bottom of the lake bag 4 floating on the sea changes accordingly. Even if 4' moves up and down, bellows 8, 8...
...If the water pressure inside is left unregulated, the bottom 4' of the lake bag will rise and fall as the amount of water stored increases and decreases, so basically the water pressure difference between the inside and outside of the lake bag 4 and bellows 8 will always be close to zero everywhere. There is no fear that the bellows 8 or the film constituting the huge lake bag 4 will be damaged by water pressure. Especially bellows 8,8
. . . Water is supplied from a control freshwater pond 29 located at the back of the control shed 23 on land through a bellows water supply and drainage pipe 20 included in the control system line 21 at a free water level. Therefore, when the amount of water stored increases, the lake bag bottom 4' lowers, the bellows-shaped lake bag side wall 4'' stretches, and at the same time, all the bellows 8, 8... extend to absorb water from the freshwater pond 29. On the other hand, when the amount of stored water decreases, the bottom 4' of the lake bag is pushed up by the pressure of seawater 1, the bellows-shaped side wall 4'' is folded, and all the bellows 8, 8... follow and contract, so the bellows 8 The water inside is returned to the control freshwater pond 29 on land in an amount commensurate with the rise of the lake bottom 4.

In this way, in the marine floating freshwater storage device of the present invention, the free water surface inside and outside is always close to zero, although there is a slight difference due to specific gravity, so the thickness is 0.5
A lake bag 4 is made of an extremely thin plastic film of mm to several mm to block the inside and outside, and when there are small to medium waves in normal weather, a simple wave shielding barrier 30 that is not very high is placed around it along with the spray. Therefore, the purpose of avoiding contamination with seawater 1 can be achieved. This makes it possible to establish a huge freshwater storage facility in the vast, almost limitless space of the ocean, which can serve as a stable water supply source for coastal areas on land throughout the year.

However, nature is not always peaceful. Especially when building such a huge artificial facility on top of a fluid called the ocean, it is necessary to be able to deal with storms that attack irregularly. In other words, if a facility made of a thin film like the one of the present invention is directly hit by a large wave containing enormous energy from a storm, it will be completely damaged. However, in the ocean, even if a storm generates large waves on the surface of the ocean, as the depth increases, the movement of seawater 1 gradually decreases, and the effect becomes less of a problem at slightly deeper depths.

Therefore, in the present invention, in the event of a storm, all of the stored fresh water 2 is dumped into the sea, and the entire device is allowed to sink near the seabed 3, thereby allowing evacuation. In other words, the 8th section provides an overview.
9 and 10, when a storm approaches that can be predicted by the weather forecast, the water surface on which the entire circumference of the lake bag 4 is suspended is first given by command from the control hut 23. The control system line 21 is opened by opening the solenoid valve 31 attached to the top surface of the air bladder 11.
The buoyancy of the water surface air bladder 11 is forcibly sucked and exhausted through the air pipe 32 contained in the bellows, and at the same time, the fresh water inside all the connected bellows 8, 8... is also suctioned through the bellows water supply and drainage pipe 20. The water is drained and all the bellows 8, 8... are contracted. At that time, bellows 8
The bellows ventilation electromagnetic valve 31' attached to the adjustment exhaust hole 24 at the top end of the bellows 8 is closed to create a negative pressure inside the bellows 8 to help it contract and to prevent seawater 1 from entering. Then, due to the weight of the support plate 7, bellows 8, etc., the entire circumference of the lake bag 4 sinks into the sea along with the support 5, and the barrier separating seawater and freshwater is easily removed, and the freshwater is replaced by seawater. As a result, the fresh water 2 is abandoned into the sea and becomes integrated with the sea water 1 with very little work energy, but the entire main equipment related to the lake bag is placed on the sea floor 3 where there is almost no movement of water. The ship was evacuated to a nearby location, leaving only the upper part of the pillar 5 with low wind resistance and the wire rope 48 for support and fixation above the sea surface, waiting for the storm to pass.

When the storm calms down, compressed air is sent to the water surface air bladder 11 through the air pipe 32 to inflate it and give it buoyancy, allowing the entire lake bladder to float slowly near the sea surface 1'. In that case, the inside of each bellows 8 is kept under negative pressure so that it does not swell, and when the entire body floats to as close as possible to the sea surface 1', the sea air Compressed air is fed into the swim bladder 33 through the air pipe 32 to inflate it, and the periphery of the lake bladder 4 is further floated above the sea surface 1'. Even in this state, seawater 1 still remains in the lake bag 4, so if the seawater 1 is pumped out using a separately provided drain pump 25 with a float, the lake bag 4 will eventually become as shown in FIG. The central part of the lake bottom 4' rises and comes to match the free sea level. In other words, there is no seawater in the center, and only a ring of seawater 1 remains in the periphery. Therefore, next time, we installed a partition wall with a simple weir in the ring-shaped part of the seawater 1 remaining in the lake bag 4 to prevent the water on both sides of the weir from mixing. Seawater 1 is pumped out from one drain pump 25 with a float, and at the same time, the same amount of fresh water 2 is injected into the other. Then, the seawater 1 remaining in the ring-shaped lake bag 4 while maintaining the water surface 1', 2' will be replaced by fresh water 2, and eventually all of it will be desalinated. After that, the pumping operation is stopped and only fresh water 2 is continued to be injected to cause the bottom 4' of the lake bag to settle.When no unreasonable force is applied to any part of the lake bag 4, the submerged swim bladder is adjusted according to the amount of water increase. 33, while slowly supplying water to the bellows 8 through the bellows water supply and drainage pipe 20,
When each bellows 8 is inflated to the required extent, the interior of the bellows returns to a free water surface state so that it can follow the free rise and fall of the lake bag bottom 4', returning to the normal operating state as shown in FIG. In this case, in order to create a ring-shaped water surface inside the lake bag 4, some allowance must be made in advance in the film of the lake bag bottom 4'.
The operation of sedimentation, flotation, drainage, etc. of the entire lake bag 4 is promoted and monitored by the control device 21' in the control shed 23 using a computer equipped with a detector, a television, etc.
It goes without saying that the bellows 8 is remotely controlled by the user, but in addition to supporting the above-mentioned floating and sinking work, the bellows 8 also monitors in detail the tilting and deformation of the lake bag 4 due to ocean currents and tides during normal times. Based on the monitored data, the internal water is sometimes pressurized and expanded through the control line, and sometimes contracted as negative pressure, and the lake bag 4
It plays a role in maintaining a normal posture at all times.

As shown in Figure 12, the lake bag 4 that has been described so far is a standard independent floating type surrounded by seawater 1 all around, but the cost can be reduced in areas where there is less concern about storms. In this case, it is also possible to use a floating type as shown in FIG. 13 in which one side of the lake bag 4 is replaced by a beach line 22. In this type of berthing, two concrete foundations 27 for the beach are installed on both sides near the beach line 22, and one end of the lake bag side wall 4'' is fixed, and at the same time, the land along the beach line 22 between these foundations 27 is A film fixing line 27' is provided to stop the end of the lake bag, but in either case, water is sucked from the freshwater storage device on the sea and sent to the required location on land via the freshwater water pipe 28 and the water pump 25'.

Particularly in order to protect the present invention in an emergency, discarding fresh water 2 into seawater 1 is the same as flowing out of a river and does not pollute the natural world. However, even if the purpose is to avoid a disaster, a large amount of stored fresh water 2 scheduled for use is abandoned, and the amount of water required on land cannot be met immediately by supplying water from elsewhere via the underwater water pipe 34.

In such a case, the present invention provides a floating fresh water storage device made of the above-mentioned lake bag 4 as a fourteenth
As shown in the figure, by connecting a large number of underwater water pipes 34, a local shortage of fresh water 1 can be compensated to a considerable extent. In other words, normal storms are caused by atmospheric vortices called typhoons or hurricanes. The strong air currents brought about by the extremely low atmospheric pressure in the center create large waves in the seawater, exerting frightening destructive power, but fortunately, the strong wind area is usually relatively narrow and limited. It is something that passes within a range. Therefore, in the case of a large landmass, the freshwater storage devices of the present invention are installed in a chain along the surrounding sea area, and each freshwater storage device is connected by an underwater water pipe 34.When the center of the typhoon passes, Even if there are one or two freshwater storage devices that have abandoned freshwater 2, they can immediately receive freshwater from other freshwater storage devices via the underwater water pipe 34 after the typhoon has passed, so the freshwater storage can be completed. Water shortages on land in areas normally served by the device can be kept to a minimum. What I would like to particularly note here is that during peacetime, when water is sent from a water supply area via the underwater water pipe 34, water is normally taken near the mouth of a river, and the thin, large-diameter pipe is used to supply water at low water pressure. Because of the construction and water supply, a huge water storage lake like the one in the present invention is required on the water receiving side. Therefore, even if a large amount of stored water is lost due to storm avoidance, it will take a significant amount of time to restore the water volume with the normal water supply capacity of the underwater water pipe 34 from the river source, so in an emergency, a chain reaction will occur. The freshwater storage devices must help each other to supplement freshwater 2.
Furthermore, supplementation is not limited to disasters; it is natural that when the amount of water used by a certain freshwater storage device increases in particular, it is natural that an emergency exchange of water from other freshwater storage devices will be made; It is possible to arrange the water storage devices in a chain so as to create an interconnected and complementary system.

Figure 14 shows how a fresh water storage device consisting of a lake bag 4 is installed on the sea near the coast, and an underwater water supply pipe 3
4 and siphon 38 in a chain, and the management of the entire system in which these fresh water storage devices are connected is controlled by each control shed 2.
3, 23, .
Concrete foundation for anchors at key points 6

Claims (1)

[Scope of Claims] 1. A bag-shaped floating freshwater storage facility with a bellows-shaped side wall made of a strong film or the like on the sea, and a large number of support columns surrounding the bag are installed in the sea. All of these supports are lined up in a row, and support plates with holes that can be inserted into the supports and can slide up and down are attached to the supports in multiple layers, and a water surface air bladder is attached to the top support plate so that the structure floats on the water surface. Along with giving sex,
A large number of bellows capable of sucking in and discharging water are installed between each support plate via control pipes from land, and normally the water inside the bellows is kept at normal pressure and expansion and contraction is left to the amount of water stored. In the event of an abnormality such as a slope of the lake bag, the support plate is stabilized by applying pressure or negative pressure to the inner water, and each layer of these support plates is surrounded by a column of columns, and the above-mentioned water storage can be folded into a bellows shape at one end of the inner support plate. A feature of this method is that the side walls of the water storage bags in facilities are attached to the pillars from the outside so that the side walls can slide up and down along the pillars, and the water storage bags are moored uncovered on the sea in the support row enclosure. A floating freshwater storage device. 2. In order to float and secure the water storage bag of a floating freshwater storage facility, which consists of a bottomed bag made of strong film, etc., on the sea, a large number of supports are lined up and enclosed, and each of these supports is A large number of support plates with holes that can slide up and down are installed one on top of the other with support columns passing through these holes, and a water surface air bladder is attached to the topmost support plate to give it buoyancy on the water surface. A large number of bellows capable of sucking in and discharging water are installed between each support plate via control pipes from land, and normally the water inside the bellows is kept at normal pressure and its expansion and contraction is left to the amount of water stored. In the event of an abnormality such as a slope of the lake bag, the internal water is pressurized or negative pressure to keep the support plate in a stable state.
Each layer of these support plates is surrounded by a row of support plates, and one end of the inner support plate can be folded into a bellows shape.The side wall of the water storage bag of the above fresh water storage facility is attached to the support from the outside, so that the side wall follows the support. In a sea-floating freshwater storage device that can slide up and down and is moored uncovered in a column enclosure on the sea, a surface air bladder attached to the top layer support plate and a water surface air bladder attached to the bottom layer support plate are attached. The attached sea air bladders can be individually operated with compressed air via dedicated pipes to inflate them and give them buoyancy, or conversely, the air in these bladders can be sucked out and deflated. It has a structure that takes away the buoyancy, and at the same time, water in and out of the bellows, which is interposed between the support plates that hold the side wall of the lake bag in a folded shape, is brought in and out through a special pipe, and the side wall of the lake bag is used as a support. This floating fresh water storage device is characterized by the ability to freely operate and control the ups and downs of a lake bag by having a structure that can be expanded and contracted up and down.