US20120134750A1 - Water barrier device - Google Patents

Water barrier device Download PDF

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Publication number
US20120134750A1
US20120134750A1 US13/252,358 US201113252358A US2012134750A1 US 20120134750 A1 US20120134750 A1 US 20120134750A1 US 201113252358 A US201113252358 A US 201113252358A US 2012134750 A1 US2012134750 A1 US 2012134750A1
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United States
Prior art keywords
water
storage tank
water storage
water barrier
passage
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US13/252,358
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English (en)
Inventor
Hideki Fujita
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Miyao Susumu
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Individual
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Assigned to IWASAKI, SHIGEAKI, FUJITA, HIDEKI, MIYAO, SUSUMU reassignment IWASAKI, SHIGEAKI ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FUJITA, HIDEKI
Publication of US20120134750A1 publication Critical patent/US20120134750A1/en
Abandoned legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/10—Dams; Dykes; Sluice ways or other structures for dykes, dams, or the like
    • E02B3/102—Permanently installed raisable dykes
    • E02B3/104—Permanently installed raisable dykes with self-activating means
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • E02B7/20—Movable barrages; Lock or dry-dock gates
    • E02B7/205—Barrages controlled by the variations of the water level; automatically functioning barrages

Definitions

  • the present invention relates to a water barrier device configured to block the flow of water toward residential areas and the like at the time of tsunamis and floods.
  • the problems are that: in the case of moving the watertight door by humans, the opening and closing of the watertight door cannot be performed quickly; and in the case of moving the watertight door by electric power (a motor or the like), the watertight door does not move in the event of power outage.
  • Japanese Laid-Open Patent Application Publication No. 7-197751 describes one example of such water barrier devices.
  • the water barrier device described in the above publication is configured such that: an underground pit is formed under the ground level; a float and a tide prevention plate are accommodated in the underground pit; water having flowed into the underground pit floats the float and the tide prevention plate; and thus, the tide prevention plate projects at the passage located above the underground pit.
  • the name “tide of wave preventing device” is used.
  • this “tide of wave preventing device” is one type of “water barrier device” configured to block the flow of water.
  • the underground pit receives the water flowing from the sea or river at the time of tsunamis or floods, and the float and the tide prevention plate move up by utilizing buoyant force of the water. Therefore, the tide of wave preventing device can operate quickly and surely without relying on humans or electric power.
  • the float and the tide prevention plate are sandwiched between a metal cover plate and a bottom surface of the underground pit made of ferroconcrete at normal times, there is no place to which the impacts transferring from the vehicles and the like to the cover plate can escape, and there is a possibility that the impacts may damage the float and the tide prevention plate.
  • An object of the present invention is to provide a water barrier device capable of being prevented from being damaged by impacts from vehicles and the like.
  • a water barrier device includes: a water storage portion provided under a passage where people and vehicles go through; and a water barrier portion accommodated in the water storage portion so as to be able to appear with respect to the passage, wherein the water storage portion includes: a water storage tank configured to store water and be formed to extend in a transverse direction of the passage; a water intake portion through which the water is taken in the water storage tank; and an opening which is open on an upper portion of the water storage tank toward the passage, the water barrier portion includes: a water barrier wall configured to appear with respect to the passage through the opening; a float portion formed integrally with the water barrier wall and configured to receive buoyant force from the water, stored in the water storage tank, to move up together with the water barrier wall; and a lid portion provided at an upper portion of the water barrier wall and configured to open and close the opening in accordance with up-down movements of the float portion and the water barrier wall, in a first state where the water is not stored in the water storage tank, the lid portion contacts an inner peripheral portion of
  • the lid portion in the first state where the water is not stored in the water storage tank, the lid portion contacts the inner peripheral portion of the opening.
  • the passage is opened, and the opening is closed.
  • the space is secured between the lower end portion of the water barrier wall and the bottom surface of the water storage tank, and the movements of the lower end portion of the water harrier are allowed in this space. Therefore, even in a case where impacts are applied to the lid portion from people or vehicles going through the passage, the impacts can be absorbed by the movements of the lower end portion of the water barrier wall.
  • the water barrier wall and the float portion can be prevented from being damaged by the impacts.
  • the lid portion and the water barrier wall move up together with the float portion.
  • the water barrier wall projects toward the passage through the opening, and the passage is closed. Therefore, the flow of the water flowing through the passage can be blocked quickly and surely without relying on humans or electric power.
  • the space is formed by the lower end portion of the water barrier wall, the bottom surface of the water storage tank, and the side wall of the water storage tank, and the first discharge port to which the first discharge pipe is connected is formed at the portion of the side wall of the water storage tank, the portion constituting the space.
  • the water can be discharged through the first discharge pipe in a short period of time. Further, according to this configuration, the water stored in the water storage tank can be guided to the first discharge port and the first discharge pipe by the inclined bottom surface of the water storage tank.
  • the water barrier wall may include two wall plates arranged in parallel with each other, and the float portion may be arranged between these two wall plates.
  • the float portion is arranged between two wall plates constituting the water barrier wall, the vertical length of a portion where the water barrier wall and the float portion overlap can be shortened. Thus, the entire device can be reduced in size. In addition, the strength of the water barrier wall earl be increased by these two wall plates.
  • a second discharge port to which a second discharge pipe through which the water stored in the water storage tank is discharged is connected may be formed at the portion of the side wall of the water storage tank, the portion constituting the space, a lowest point of the second discharge port may be higher in position than a lowest point of the first discharge port, and a valve configured to block the flow of the water according to need may be provided on the first discharge pipe.
  • the valve of the first discharge pipe by operating the valve to open the first discharge pipe, the water stored in the water storage tank can be discharged.
  • the valve of the first discharge pipe is closed, and the rain water and the like can be discharged through the second discharge port.
  • FIG. 1 is a perspective view showing the configuration of a water barrier device according to Embodiment 1.
  • FIG. 2 is a cross-sectional view showing a usage state (first state) of the water barrier device according to Embodiment 1.
  • FIG. 3 is an exploded perspective view showing the configuration of the water barrier device according to Embodiment 1.
  • FIG. 4 is a front view showing the configuration of the water bather device according to Embodiment 1.
  • FIG. 5A is a front view showing the configuration of a water barrier portion of the water barrier device according to Embodiment 1.
  • FIG. 5B is a rear view showing the configuration of the water bather portion of the water barrier device according to Embodiment 1.
  • FIG. 6C is a right side view showing the configuration of the water barrier portion of the water barrier device according to Embodiment 1.
  • FIG. 6D is a cross-sectional view taken along line VID-VID of FIG. 5A showing the configuration of the water barrier portion of the water barrier device according to Embodiment 1.
  • FIG. 7 is a partially enlarged cross-sectional view showing the usage state (first state) of the water barrier device according to Embodiment 1.
  • FIG. 8 is a partially enlarged cross-sectional view showing the usage state (second state) of the water barrier device according to Embodiment 1.
  • FIG. 9 is a partial cross-sectional view showing the configuration of the water barrier device according to Embodiment 2.
  • FIG. 10 is a partial cross-sectional view showing the configuration of the water barrier device according to Embodiment 3.
  • FIG. 11 is a front view showing the configuration of the water barrier device according to Embodiment 4.
  • FIG. 1 is a perspective view showing the configuration of a water barrier device 10 according to Embodiment 1.
  • FIG. 2 is a cross-sectional view showing a usage state (first state) of the water barrier device 10 .
  • FIG. 3 is an exploded perspective view showing the configuration of the water barrier device 10 .
  • FIG. 4 is a front view showing the configuration of the water barrier device 10 .
  • the water barrier device 10 is configured to block the flow of water W toward a flooding prevention area S, such as a residential area, at the time of tsunamis or floods and includes a water storage portion 12 provided under a passage R and a water barrier portion 14 accommodated in the water storage portion 12 .
  • the passage R is provided at a place through which the water W flows toward the flooding prevention area S at the time of tsunamis or floods.
  • people and vehicles M FIG. 7 can go through the passage R.
  • FIG. 7 can go through the passage R.
  • the upstream side and downstream side of the flow of the water W toward the flooding prevention area S respectively denote “front” and “rear”, and a right side and a left side when the water barrier device 10 is viewed from the upstream side respectively denote “right” and “left”.
  • the water storage portion 12 includes: a water storage tank 20 configured to store the water W ( FIG. 2 ); a first water intake portion 22 through which the water W is taken in the water storage tank 20 from above; a second water intake portion 24 through which the water W is taken in the water storage tank 20 from the front; an opening 26 which is open on an upper portion 20 a of the water storage tank 20 toward the passage R; and a pair of guide portions 28 a and 28 b respectively provided on upper surfaces of both left-right-direction end portions of the water storage tank 20 .
  • the water storage tank 20 is a case-shaped member configured to receive and store the water W, which is flowing toward the flooding prevention area S, through the first water intake portion 22 and the second water intake portion 24 .
  • the water storage tank 20 is configured to extend across the passage R, be made of ferroconcrete, and be formed in a rectangular solid shape extending in a left-right direction. As shown in FIG. 1 , the water storage tank 20 is a case-shaped member configured to receive and store the water W, which is flowing toward the flooding prevention area S, through the first water intake portion 22 and the second water intake portion 24 .
  • the water storage tank 20 is configured to extend across the passage R, be made of ferroconcrete, and be formed in a rectangular solid shape extending in a left-right direction. As shown in FIG.
  • an upper surface of a bottom plate 30 constituting a bottom portion of the water storage tank 20 is inclined so as to become lower from one longitudinal end portion thereof (in the present embodiment, a left end portion thereof) toward the other end portion thereof (in the present embodiment, a right end portion thereof).
  • a first discharge port 34 through which the water W stored in the water storage tank 20 is discharged is formed at a lower portion of a right end portion of a front side wall 32 a of the water storage tank 20
  • a second discharge port 36 through which the water W stored in the water storage tank 20 is discharged is formed at a lower portion of a left end portion of the front side wall 32 a .
  • upper end edges of a rear side wall 32 b , left side wall 32 c , and right side wall 32 d ( FIG. 3 ) of the water storage tank 20 are arranged to be substantially the same in height as a passage surface G constituting the passage R, and an upper end edge of the front side wall 32 a is arranged to be lower than the passage surface G.
  • the first discharge port 34 is an opening through which the water W stored in the water storage tank 20 is discharged at once, and the diameter thereof is designed to be large so as to allow the water W to be discharged in a short period of time.
  • An upstream end portion of a first discharge pipe 38 is connected to the first discharge port 34 , and a valve 40 configured to block the flow of the water W according to need is provided on the first discharge pipe 38 .
  • the valve 40 is closed so as to prevent the water W from flowing backward.
  • the valve 40 is opened manually or electrically.
  • a downstream end portion of the first discharge pipe 38 is open toward, for example, the sea.
  • the second discharge port 36 is an opening through which, for example, rain water accumulated at normal times is discharged, and the diameter thereof is designed to be smaller than the diameter of the first discharge port 34 .
  • An upstream end portion of a second discharge pipe 42 is connected to the second discharge port 36 , and a valve (not shown) configured to open and close a discharge passage is provided on the second discharge port 36 or the second discharge pipe 42 .
  • This valve is configured to open when the level of the water W stored in the water storage tank 20 is lower than a predetermined value and close when the level of the water W is equal to or higher than the predetermined value.
  • the valve opens to discharge, for example, the rain water through the second discharge pipe 42 .
  • a downstream end portion of the second discharge pipe 42 is open toward, for example, the sea.
  • the first water intake portion 22 includes: a bottom plate portion 22 a formed to extend toward a front side from an upper end portion of the front side wall 32 a of the water storage tank 20 ; and a front plate portion 22 b formed to extend toward an upper side from a front end portion of the bottom plate portion 22 a , and a water intake port 44 through which the water W is taken in is located on a rear side of an upper end portion of the front plate portion 22 b so as to open toward the passage R.
  • a lid member 46 is detachably arranged on an upper portion of the water intake port 44 so as to cover the water intake port 44 .
  • the lid member 46 is a plate-shaped member including a plurality of water intake holes 46 a through which the water W is taken in.
  • the lid member 46 is made of, for example, metal having corrosion resistance so as to extend in the left-right direction.
  • the second water intake portion 24 is a portion which receives the water W from a front side when the level of, for example, the sea rises up to a predetermined height H which is lower than the passage surface G.
  • the second water intake portion 24 includes a water intake pipe 24 a having a rectangular cross-sectional shape extending in the left-right direction.
  • a downstream end portion of the water intake pipe 24 a is connected to a portion of the front side wall 32 a of the water storage tank 20 , the portion being located to be spaced apart from the bottom surface 30 a by a predetermined distance.
  • An upstream end portion of the water intake pipe 24 a is open toward, for example, the sea.
  • a passage cross-sectional area of the water intake pipe 24 a can be suitably adjusted by changing a left-right length thereof while maintaining constant a vertical length thereof.
  • the opening 26 is a portion through which the water barrier portion 14 accommodated in the water storage tank 20 appears with respect to the passage R.
  • a front-rear length of the opening 26 is designed to be larger than a front-rear length of a water barrier wall 70 of the water barrier portion 14
  • a left-right length of the opening 26 is designed to be larger than a left-right length of the water barrier wall 70 .
  • a rod-shaped front lid receiving portion 50 and a rod-shaped rear lid receiving portion 52 are respectively provided on a front side and rear side of the opening 26 so as to extend in the left-right direction.
  • Upper surfaces of the front lid receiving portion 50 and the rear lid receiving portion 52 are lid receiving surfaces 54 which receive a lid portion 74 .
  • the guide portions 28 a and 28 b are portions configured to guide in a vertical direction the water barrier portion 14 configured to appear with respect to the passage R through the opening 26 .
  • Each of the guide portions 28 a and 28 b includes: a supporting post portion 60 made of ferroconcrete and having a substantially U shape in plan view; and a guiding plate 62 made of metal and having a substantially U shape in plan view.
  • Each of the supporting post portions 60 includes: a side plate 60 a arranged continuously with respect to a structure, such as a bank; a front plate 60 b arranged on a front side of the side plate 60 a ; and a rear plate 60 c arranged on a rear side of the side plate 60 a .
  • Plate-shaped lid members 64 are respectively connected to upper end surfaces of the supporting post portions 60 by using bolts 66 .
  • Each of the guiding plates 62 is a member configured to cover an inner surface of the supporting post portion 60 and is formed by bending a metal plate.
  • a guide rail 68 configured to guide the water barrier wall 70 is formed on an inner surface of the guiding plate 62 so as to extend in the vertical direction.
  • FIGS. 5A and 5B are diagrams each showing the configuration of the water hairier portion 14 of the water barrier device 10 .
  • FIG. 5A is a front view
  • FIG. 5B is a rear view.
  • FIG. 6C is a right side view
  • FIG. 6D is a cross-sectional view taken along line VID-VID of FIG. 5A .
  • the water barrier portion 14 includes: the water barrier wall 70 configured to appear with respect to the passage R through the opening 26 ; a float portion 72 formed integrally with the water barrier wall 70 and configured to receive the buoyant force from the water W stored in the water storage tank 20 to move up together with the water bather wall 70 ; and the lid portion 74 provided on an upper portion of the water barrier wall 70 and configured to open and close the opening 26 in accordance with up-down movements of the float portion 72 and the water barrier wall 70 .
  • the water barrier wall 70 includes two wall plates 76 a and 76 b arranged in parallel with each other.
  • a peripheral portion of the wall plate 76 a and a peripheral portion of the wall plate 76 b are coupled to each other via a top plate 78 a , a bottom plate 78 b , a right side plate 78 c , and a left side plate 78 d .
  • a division plate 80 including a hole 80 a at the center thereof is horizontally arranged between two wall plates 76 a and 76 b .
  • the division plate 80 divides an internal space of the water barrier wall 70 into an upper space 70 a and a lower space 70 b .
  • Materials of respective components of the water barrier wall 70 are not especially limited. However, to effectively fulfill the function of blocking the flow of the water W, those materials are desirably high strength materials, such as aluminum alloy, stainless steel, fiber reinforced plastic, or plastic. In the present embodiment, the respective components are made of metal and are welded to one another to constitute the case-shaped water barrier wall 70 .
  • a plurality of (in the present embodiment, two) projections 82 a configured to contact the inner surface of the guiding plate 62 are provided on each of left-right-direction end portions of the surface of the wall plate 76 a , located on a front side, so as to be spaced apart from each other in the vertical direction.
  • a plurality of (in the present embodiment, two) projections 82 b configured to contact the guide rail 68 are provided on each of left-right-direction end portions of the wall plate 76 b , located on a rear side, so as to be spaced apart from each other in the vertical direction.
  • a packing 84 having a substantially U shape in rear view is provided in a region of the surface of the wall plate 76 b located on the rear side, the region being located on a center side of the projections 82 b.
  • the float portion 72 is arranged between two wall plates 76 a and 76 b and is a portion where the buoyant force is generated by the water W stored in the water storage tank 20 .
  • the float portion 72 is constituted by the upper space 70 a , the lower space 70 b , and a filler 86 filling the upper space 70 a .
  • the upper space 70 a and the lower space 70 b are configured to be airtight to prevent the air therein from leaking, and the buoyant force is obtained by this air.
  • the upper space 70 a is filled with the filler 86 , such as urethane foam, which is light in weight.
  • the upper space 70 a is formed at a portion of the water barrier wall 70 , the portion being to be projected toward the passage R, and the strength of this portion is increased by filling the upper space 70 a with the filler 86 .
  • the water barrier wall 70 is prepared with the bottom plate 78 b detached.
  • the upper space 70 a is filled with the filler 86 through the hole 80 a of the division plate 80 .
  • the bottom plate 78 b is welded to lower end portions of the wall plates 76 a and 76 b .
  • welded portions are heated to a high temperature.
  • the heat can be released by, for example, the lower space 70 b located between the bottom plate 78 b and the upper space 70 a , the heat deterioration of the filler 86 can be prevented.
  • the lid portion 74 includes a plate-shaped lid main body 90 covering the opening 26 and a plurality of connection portions 92 detachably connecting the lid main body 90 to the upper portion of the water barrier wall 70 .
  • the lid main body 90 contacts the front lid receiving portion 50 and the rear lid receiving portion 52 , which constitute the inner peripheral portion 26 a of the opening 26 .
  • the shape of the lid main body 90 in plan view is designed in a rectangular shape extending in the left-right direction so as to correspond to the opening 26 .
  • the front-rear length of each of both left-right-direction end portions of the lid main body 90 is shorter, and these end portions are respectively arranged inside the guiding plates 62 .
  • each of the connection portions 92 includes: a projection-shaped first connection piece 94 provided on a side surface of the upper portion of the water barrier wall 70 ; and a projection-shaped or rod-shaped second connection piece 96 provided on a lower surface of the lid main body 90 .
  • the first connection piece 94 and the second connection piece 96 respectively include holes (not shown) which communicate with each other.
  • a bolt 98 a is inserted into these holes and threadedly engages with a nut 98 b . Therefore, by detaching the nut 98 b from the bolt 98 a and pulling out the bolt 98 a from the holes, the lid portion 74 can be detached from the water barrier wall 70 .
  • a length L 0 from a lower surface of an outer peripheral portion of the lid main body 90 to a lower end of the water barrier wall 70 is designed to be smaller than a length L 1 from the lid receiving surface 54 to an uppermost portion of the bottom surface 30 a of the water storage tank 20 . Therefore, in the “first state”, a lower end portion 70 c of the water barrier wall 70 can be prevented from contacting the bottom surface 30 a of the water storage tank 20 . In addition, the movements of the lower end portion 70 e of the water barrier wall 70 are allowed, and the impacts and vibrations applied to the water barrier wall 70 can be absorbed.
  • FIG. 7 is a partially enlarged cross-sectional view showing a usage state (first state) of the water barrier device 10 .
  • FIG. 8 is a partially enlarged cross-sectional view showing another usage state (second state) of the water barrier device 10 .
  • the water barrier wall 70 and the float portion 72 are completely accommodated in the water storage tank 20 , and the lid portion 74 contacts the lid receiving surface 54 of the inner peripheral portion 26 a of the opening 26 .
  • the passage R is opened, and the opening 26 is closed.
  • the water barrier wall 70 is suspended and supported by the lid portion 74 contacting the lid receiving surface 54 .
  • a space Q is secured between the lower end portion 70 c of the water barrier wall 70 and the bottom surface 30 a of the water storage tank 20 . Therefore, in the “first state”, people and the vehicles M can freely go through the passage R.
  • the lower end portion 70 c of the water barrier wall 70 moves.
  • the impacts can be absorbed. Therefore, the water barrier wall 70 and the float portion 72 can be prevented from being damaged by the impacts.
  • the water W is taken in the water storage tank 20 through the water intake pipe 24 a , and the level of the water W in the water storage tank 20 rises. That is, the water barrier device 10 becomes a “second state” where the water W is stored in the water storage tank 20 . As shown in FIG. 8 , in the “second state”, the float portion 72 receives the buoyant force from the water W stored in the water storage tank 20 . Thus, the water barrier wall 70 and the lid portion 74 move up together with the float portion 72 , and the water barrier wall 70 projects with respect to the passage R through the opening 26 .
  • the passage R is closed, and the flow of the water W toward the flooding prevention area S is blocked.
  • the water W is taken in the water storage tank 20 through the water intake port 44 .
  • a projecting length of the water barrier wall 70 with respect to the passage R is maintained constant, and the flow of the water W is blocked mainly by a portion, where the upper space 70 a is faulted, of the water barrier wall 70 .
  • the valve 40 is opened, and the water W in the water storage tank 20 is discharged through the first discharge pipe 38 .
  • the valve 40 is closed to prevent the water W from flowing backward through the first discharge pipe 38 .
  • the water W (including the rain water and the like) is stored in the space Q.
  • the level of the water W reaches the height of the second discharge port 36 , the water W is discharged through the second discharge pipe 42 .
  • the valve 40 is opened, and the garbage is discharged through the first discharge pipe 38 together with the water W in the space Q.
  • the water barrier portion 14 can be prevented from being damaged by the impacts from the vehicles M ( FIG. 7 ) and can be used without any problem at places where the vehicles M go through.
  • the first discharge port 34 is fowled on a side of the space Q secured between the lower end portion 70 c of the water barrier wall 70 and the bottom surface 30 a of the water storage tank 20 , and pressure can be applied to the water W in the space Q from above by the weight of the water barrier portion 14 .
  • the water W can be efficiently discharged through the first discharge port 34 .
  • the bottom surface 30 a of the water storage tank 20 is inclined so as to become lower toward the first discharge port 34 , the water W can be efficiently discharged along the bottom surface 30 a.
  • the float portion 72 is arranged between two wall plates 76 a and 76 b constituting the water barrier wall 70 , the vertical length of a portion where the water barrier wall 70 and the float portion 72 overlap can be shortened. Thus, the entire device can be reduced in size.
  • FIG. 9 is a partial cross-sectional view showing the configuration of a water barrier device 100 according to Embodiment 2.
  • a lid main body 106 of a lid body 104 constituting a water barrier portion 102 is formed to be bent in a circular-arc shape.
  • the lid main body 106 in an arch shape extends between the front lid receiving portion 50 and the rear lid receiving portion 52 . Therefore, the withstand load of the lid main body 106 can be improved while suppressing the increase in thickness of the lid main body 106 .
  • the same reference signs are used for the components corresponding to the components of the water barrier device 10 (the same is true for FIGS. 10 and 11 ).
  • FIG. 10 is a partial cross-sectional view showing the configuration of a water barrier device 110 according to Embodiment 3.
  • a lid main body 114 a constituting a lid body 114 and a top plate 116 a constituting a water barrier wall 116 are formed as one component, and the lid body 114 and water barrier wall 116 are integrally formed. Therefore, the number of parts of the water barrier portion 112 can be reduced, and the weight of the barrier portion 112 can be reduced. In addition, the manufacturing cost can also be reduced.
  • FIG. 11 is a front view showing the configuration of a water barrier device 120 according to Embodiment 4.
  • a bottom surface 122 a of a water storage tank 122 is inclined so as to become lower from both left-right-direction end portions thereof toward a left-right-direction center portion thereof, and the first discharge port 34 is provided at a lower portion of a left-right-direction center portion of a front side wall 122 b of the water storage tank 122 .
  • the bottom surface 122 a of the water storage tank 122 is inclined so as to become lower toward the first discharge port 34 provided at the lower portion of the left-right-direction center portion of the front side wall 122 b .
  • the second discharge port 36 and the first discharge port 34 are provided next to each other such that the lowest point of the second discharge port 36 is higher in position than the lowest point of the first discharge port 34 .
  • the water W cart be efficiently discharged along the bottom surface 122 a.
  • the water storage tank 20 and the guide portions 28 a and 28 b are made of ferroconcrete, but the materials thereof are not limited to ferroconcrete. In another embodiment, the water storage tank 20 and the guide portions 28 a and 28 b may be made of metal having corrosion resistance.
  • the upper space 70 a and the lower space 70 b may be used as spaces and may be filled with air or a gas other then air, or both the upper space 70 a and the lower space 70 b may be filled with the filler 86 .

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Revetment (AREA)
  • Barrages (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
US13/252,358 2010-10-08 2011-10-04 Water barrier device Abandoned US20120134750A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010-228884 2010-10-08
JP2010228884A JP4773577B1 (ja) 2010-10-08 2010-10-08 遮水装置

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Cited By (6)

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WO2013189895A1 (de) * 2012-06-18 2013-12-27 Floodprotect Limited Dammvorrichtung und herstellungsverfahren für eine dammvorrichtung
AT515048A1 (de) * 2013-09-25 2015-05-15 Hainzl Industriesysteme Gmbh Vorrichtung zur optischen Anzeige einer Durchfahrsperre
US20150337583A1 (en) * 2012-11-13 2015-11-26 Lixil Suzuki Shutter Corporation Water barrier panel device
US20160369469A1 (en) * 2014-02-13 2016-12-22 Bluewater Design Associates Limited Self-activating flood protection barrier
CN108104075A (zh) * 2017-12-08 2018-06-01 中国电建集团中南勘测设计研究院有限公司 一种降低挡水幕墙下端边壁处水流泄漏量的刚性阻水结构
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CN115095266A (zh) * 2022-05-31 2022-09-23 中冶天工集团有限公司 一种地下车库汽车坡道自动升降的防水装置及使用方法

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