JP2017031702A - Upward extensible tide embankment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an upward extensible tide embankment, made of a freely expandable sealed membrane material, and having the function of damming up a Tsunami by extending upward before an arrival of a large Tsunami though being contracted in a downward low height in normal time.SOLUTION: While generating buoyancy in a laterally long cylindrical body 2 by injecting helium gas from a helium gas injection device 6 into the freely expandable laterally long cylindrical body 2 provided on the upper side, compressed air is injected from a compressed air injection device 7 into a freely expandable longitudinally long wall body 3 of continuing with a lower part of the laterally long cylindrical body 2, so that the longitudinally long wall body 3 of becoming substantially a tide embankment can be surely extended, and a plurality of reinforcement pipes 32 are vertically installed in a sideways attitude at a predetermined interval on the longitudinally long wall body 3, so that even the longitudinally long wall body 3 made of a membrane material (being weak in strength) can be reinforced by the reinforcement pipes 32.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a seawall that is provided along the coast and has a function of blocking a tsunami when a large tsunami occurs. More specifically, it is reduced to a lower height during normal times, but when a large tsunami occurs This is related to an upward extension type seawall that can be extended upwards to prevent a tsunami.

  When a huge tsunami with a tsunami height exceeding 20 meters, for example, rushes to the coast, in the lowlands near the coast, there is a risk of losing many lives by being submerged in a very short time and receiving a huge water pressure (swept away). At the same time, catastrophes such as the collapse of various facilities (buildings, etc.) occur.

  By the way, as a countermeasure against a large tsunami, it is considered to construct a high-rise (for example, more than 30 meters) fixed seawall that matches the height of a huge tsunami (for example, more than 20 meters) over a long coastal area. It is done. When a high-rise fixed seawall is constructed over a long coastal area in this way, the tide (tsunami damming) function is exerted when a large tsunami comes to the coast, but it is extremely large in terms of landscape and coastal use. It is not realistic because there are difficulties.

  Therefore, the present invention is a simple structure made of a sealing film material that can be expanded and contracted, and is normally reduced to a lower height, but when a large tsunami occurs (when a large tsunami arrives) The purpose is to provide an upwardly extending type seawall that has the function of blocking the tsunami by extending to a tsunami and that can provide durability against tsunami collision even with a simple structure. .

  The present invention has the following configuration as means for solving the above problems.

“Invention of Claim 1 of the Present Application”
The invention of claim 1 of the present application is an upward extension type tide which is provided along the coast and is reduced to a lower height in normal times, but has a function of extending upward when a large tsunami arrives and blocking the tsunami. The target is a bank. The name of the present invention is “upwardly extending type seawall”, but in the following description, this “upwardly extending type seawall” may be simply expressed as “a seawall”.

  The tide embankment according to claim 1 of the present invention is connected to a horizontally long cylindrical body that is provided on the upper side of the tide embankment and is made of a cylindrical hermetic membrane material that can expand and contract in the radial direction, and a lower portion of the horizontally long cylindrical body. A vertically long wall made of a wall-like hermetic membrane material that can be expanded and contracted in the vertical direction, a helium gas injection device for injecting helium gas into the horizontally long cylinder, and for injecting compressed air into the vertically long wall The horizontally long cylindrical body generates buoyancy when helium gas is injected by the helium gas injecting apparatus, and the vertically long wall body receives compressed air by the compressed air injecting apparatus. When injected, it exerts the action of extending upward and pushing up the horizontally long cylindrical body, and by attaching a plurality of reinforcing pipes in a horizontal posture with a predetermined interval up and down to the wall-shaped sealing film material of the vertically long wall body It is characterized by

  The above helium gas injection device uses a helium gas tank filled with helium gas (which is a very light and safe gas) in a compressed state, and helium in the helium gas tank when necessary (when a large tsunami arrives). Gas can be injected into the horizontally long cylinder through the supply pipe.

  The above compressed air injection device uses a compressed air tank filled with air (atmosphere) in a compressed state, or (and) uses a large-capacity pneumatic feed pump, when necessary (at the time of notification of the arrival of a large tsunami) Compressed air can be injected into the longitudinal wall through the supply pipe.

  Each operation of the helium gas injection device and the compressed air injection device can be performed by manual operation at the installation site, but can also be performed by remote operation from a public organization such as a fire department.

  A relatively strong non-breathable sheet material (for example, tent material) is used for the cylindrical sealing film material of the horizontally long cylindrical body. The horizontally long cylindrical body usually has a cylindrical sealing film material that is flattened and thin in the upper and lower thicknesses (when helium gas is not injected). When the gas is injected, it expands into a horizontally long cylindrical shape, and buoyancy is generated by the helium gas injected into the inside (light specific gravity). The size of the horizontally long cylindrical body is not particularly limited, but those having a diameter of 3 to 5 meters and a left and right length of about 40 to 50 meters in the maximum expanded state can be employed.

  A relatively strong non-breathable sheet material (for example, a tent material) is also used for the vertical wall body. In this vertically long wall body, the lower end portion of the wall-shaped sealing film material is fixed to the ground side in an airtight state, while the upper end portion of the wall-shaped sealing film material is fixed to the lower surface of the horizontally long cylindrical body in an airtight state. The inside is kept sealed. In this vertically long wall body, the wall-shaped sealing film material is usually reduced to a low height (in a state where no compressed air is injected). However, when compressed air is injected into the wall-shaped sealing film material, It extends in the form of a vertical wall up to a height range that can block a tsunami. The size of the horizontally long cylindrical body is not particularly limited, but in the maximum extension state, the longitudinal thickness is 3 to 5 meters, the vertical length is 30 to 40 meters, and the lateral length is 40 to 50 meters ( Those having the same length as the horizontally long cylindrical body) can be employed.

  As the reinforcing pipe attached to the wall-shaped sealing membrane material of the vertically long wall body, a lightweight and bending strength material such as an aluminum alloy is employed. Each of the reinforcing pipes has a length extending over the entire length of the vertical wall body, and has a lateral orientation with a predetermined interval (for example, an interval of 3 to 4 meters) up and down with respect to the side surface of the wall-shaped sealing membrane material. It is installed with. In the state where the vertical wall body is reduced to a low height, each reinforcing pipe is close to the top and bottom, while the wall-shaped sealing film material between the reinforcing pipes bends like a bowl over the entire circumference. Yes.

  The horizontally long cylindrical body and the vertically long wall body are preferably stored in a sturdy hangar (for example, made of reinforced concrete) during normal times. The hangar may be fixed by driving anchors into the ground so that it can withstand the water pressure during a tsunami collision.

  The seawall of claim 1 of the present application functions as follows.

  First, in the normal state, by removing the gas inside each of the horizontally long cylindrical body and the vertically long wall body, the tubular sealing film material of the horizontally long cylinder body is shrunk flatly, while the wall-shaped sealed film of the vertically long wall body The material can be reduced to a low height. In this state, the total height of the seawall composed of a horizontally long cylindrical body and a vertically long wall body is relatively low, for example, about 3 to 4 meters, and the top of the seawall is a clear space.

  When a major tsunami warning was announced, the estimated height and expected arrival time of the tsunami were examined, and when it was determined that serious damage could occur due to the tsunami, the helium gas injection device and the compressed air Each injection device is activated. Then, helium gas is injected into the horizontally long cylinder by the helium gas injection device (the horizontally long cylinder expands into a cylindrical shape), and buoyancy due to the helium gas is generated in the horizontally long cylinder, so that the upper side of the vertically long wall is On the other hand, when compressed air is injected into the vertically long wall body, the vertically long wall body expands upward and pushes the horizontally long cylinder upward. A tide barrier having a predetermined height (for example, 30 to 40 meters in height) can be completed with the horizontally long cylindrical body and the vertically long wall body. At this time, the greater the amount of air injected into the vertically long wall body (the higher the atmospheric pressure in the vertically long wall body), the more stable the self-standing posture of the vertically long wall body becomes.

  On the other hand, when the tide wall is completed as described above, a plurality of reinforcing pipes are attached to the wall-shaped sealing membrane material of the vertically long wall body in a horizontal posture with a predetermined interval in the vertical direction. Since the side surface portion can be reinforced, the reinforcing pipe exhibits a function of preventing damage when a tsunami collides with the vertically long wall portion.

“Invention of Claim 2 of the Present Application”
The invention of claim 2 of the present application adds the following components to the seawall of claim 1 above.

  That is, in the tide embankment according to the second aspect of the present invention, a horizontally long cylindrical body and a vertically long wall body each having the same length on the left and right are regarded as one tide unit, and a plurality of tide units are successively connected to the left and right. On the other hand, a reinforcing column having the same height as the maximum extension of the tide unit (for example, a height of 30 to 40 meters) is interposed between the tide units, and the reinforcing column A vertical guide groove for vertically guiding the end portion of the reinforcing pipe of the vertically long wall body is provided on the side surface of the vertical wall body, and the end portion of each reinforcing pipe is vertically guided by the guide groove.

  In the tide embankment according to the second aspect, the left and right lengths of the unit tide unit can be set to about 40 to 50 meters (not particularly limited), for example. And, between each tide unit that is continuously installed on the left and right, a reinforcing column with a high height (for example, 30 to 40 meters high) is erected. Since it is maintained at a low height (for example, 3 to 4 meters high), the space above the tide unit remains a clear space.

  Also, each reinforcing column can be erected firmly (so as not to fall down) by embedding a predetermined depth in the lower part thereof in the ground.

  And in the tide embankment of this Claim 2, the edge part of each reinforcement pipe provided in the vertical wall body is guided by the vertical guide groove provided in the side surface of the reinforcement column, respectively. The extension operation is stabilized, and in the state where the vertical wall body is extended to the maximum and the tide wall is completed, the vertical wall body is held back and forth by each reinforcing pipe.

“Invention of Claim 3 of the Present Application”
The invention of claim 3 of the present application is the tide bank according to claim 1 or 2, wherein a bending guard body in a state in which a plurality of horizontally guard materials are folded up and down freely at a position near the sea side of the vertically long wall body. An upward extension type protective wall device that can be extended upward by a power unit is installed, and the bending / extension guard body extends upward to a height corresponding to an assumed tsunami height (for example, about 30 meters). It is something that can be made to.

  By the way, when a large tsunami occurs, a huge drifting object (a ship or a huge floating substance) may come on the tsunami. On the other hand, the tide walls completed in the present application are each composed of a horizontally long cylindrical body and a vertically long wall body made of a film material, and the strength against the collision of a giant drifting object is very weak.

  In view of this, the invention of claim 3 is provided with an upwardly extending protective wall device at a position near the sea side of the tide wall that has been vertically elongated with the horizontally long cylindrical body and the vertically long wall body before the arrival of the large tsunami. It is designed to prevent the huge drifting object from colliding with the part.

  In the protective wall device, the bending / stretching guard body is configured so that a large number of horizontally long guard members can be bent up and down successively in succession by a hinge. The bending / stretching guard body is normally folded in a zigzag at a low position close to the ground, but when a large tsunami occurs (before arrival), the height corresponds to the tsunami height assumed by the power unit (for example, 30). It can be extended upwards (over meters).

  As each of the horizontally long guard members of the bending / stretching guard body, a high-strength material that is not easily broken even when a giant drifting object collides is formed into a rectangular shape. This horizontally long guard material preferably has a structure that prevents huge drifting objects but allows the water pressure of a large tsunami to escape (pass). For example, a wire mesh is stretched in a horizontally long rectangular frame as the horizontally long guard material. Those are preferred.

  As a power unit in the protective wall device, a hydraulic telescopic cylinder in which multiple cylinders are expanded and contracted by hydraulic cylinders can be used. And this protective wall device lifts the folded guard body that has been folded up to a height corresponding to the tsunami height by lifting the horizontally long guard material at the uppermost stage upward with a power device (the uppermost part of the hydraulic telescopic cylinder). It can be extended.

“Effect of the invention of claim 1 of the present application”
The seawall of the invention of claim 1 of the present application has the following effects.
(1) The horizontally long cylinder and the vertically long wall are each made of a film material that can be expanded and contracted. Helium gas is injected into the horizontally long cylinder by a helium gas injector, while compressed by a compressed air injector in the vertically long wall. By injecting air, a tide wall having a desired height (a height commensurate with the height of the tsunami) can be constructed by the horizontally elongated cylindrical body and the vertically long wall body, respectively, so that the tide bank can be constructed extremely easily and inexpensively.
(2) Keeping the overall height of the tide wall low (for example, about 3 to 4 meters high) by shrinking the horizontally long cylindrical body and the vertically long wall body under normal conditions Since it can, disadvantages such as landscape and coastal use can be reduced.
(3) At the time of forming the tide wall (when extending upward), helium gas (very light gas) is injected into the horizontally long cylindrical body, and buoyancy is generated in the horizontally long cylindrical body. While the function of pulling up the upper part of the vertical wall occurs, compressed air is injected into the vertical wall body, so that the vertical wall body expands upward and pushes the horizontal cylindrical body upward. A tide wall having a predetermined height (for example, 30 to 40 meters in height) can be completed with a horizontally long cylindrical body and a vertically long wall body in a short time.
(4) Since the buoyancy is generated by injecting the helium gas in the horizontally long cylindrical body, even if the compressed wall is not injected with compressed air alone, the vertically long wall body is securely It can be extended upward.
(5) Since a plurality of reinforcing pipes are attached to the wall-shaped sealing film material of the vertically long wall in a horizontal orientation with a predetermined interval in the vertical direction, each reinforcing pipe can be used without impairing the vertical expansion and contraction function of the vertically long wall. A vertically long wall (wall-like sealing film material) can be reinforced.
(6) If the tide wall is completed before the arrival of the big tsunami, the tide wall can reduce tsunami damage and ensure evacuation time for residents.

“Effect of the invention of claim 2 of the present application”
The invention of claim 2 of the present application is the tide bank according to claim 1, wherein the horizontally long cylinder and the vertically long wall have the same length on the left and right as one unit of tide unit, and the tide unit between the tide units. Reinforcing struts having the same height as the maximum extension of the unit (for example, 30 to 40 meters high) are inserted, and the end of the reinforcing pipe of the vertical wall body is vertically moved on the side of the reinforcing struts. A vertically long guide groove is provided for guiding the end of each reinforcing pipe in the vertical direction.

  Therefore, in addition to the effect of the above-mentioned claim 1, the tide embankment according to claim 2 is configured such that the ends of the reinforcing pipes provided on the vertically long wall body are respectively guided by the guide grooves of the reinforcing struts. There is an effect that the upward extension operation of the wall body is stabilized, and that the longitudinal wall body can be held in the front-rear direction in a state where the longitudinal wall body is extended to the maximum and the tide wall is completed.

“Effect of the invention of claim 3 of the present application”
The invention of claim 3 of the present application is the tide bank according to claim 1 or 2, wherein a bending guard body in a state in which a plurality of horizontally guard materials are folded up and down freely at a position near the sea side of the vertically long wall body. An upward extension type protective wall device that can be extended upward by a power unit is installed.

  In the tide bank according to claim 3, before the arrival of the great tsunami, the tide barrier body of the protection wall device is extended upward in a state where the tide wall having a predetermined height by the horizontally long cylindrical body and the vertically long wall body is completed. By placing it, it is possible to prevent the giant drifting object (ship or giant suspended matter) that has been pushed on the tsunami from colliding with the stretch guard body before colliding with the tide barrier.

  Therefore, in addition to the effect of claim 1 or 2, in the seawall of claim 3, it is possible to eliminate the collision of the giant drifting object (ship or giant suspended matter) with the seawall by the protective wall device. effective.

It is the front view which looked at the seawall of the example of this application from the sea side. It is the II-II expanded sectional view of FIG. FIG. 3 is an enlarged sectional view taken along line III-III in FIG. 1 (or a sectional view taken along line III-III in FIG. 2). FIG. 4 is an enlarged view of a portion IV in FIG. 2. It is a state change figure from Drawing 3, and is a seawall form figure at the time of a big tsunami arrival. It is a perspective view which shows the other usage example of the seawall of an Example of this application.

  Hereinafter, the embodiment of the present application will be described with reference to FIGS. 1 to 6. The seawall of this embodiment is installed along the coast and exhibits a function of blocking a tsunami when a large tsunami arrives. 1 to 5 show a first embodiment (first use example) in which the tide banks are installed in a line along the coast, and FIG. 6 shows the structure X of the tide bank constructed near the coast. The 2nd Example (2nd usage example) installed so that the circumference | surroundings may be enclosed is shown.

“First Example of FIGS. 1 to 5”
The dyke of the first embodiment shown in FIGS. 1 to 5 is installed in a row over a predetermined length range along the coast. The tide embankment of the first embodiment includes a horizontally long cylindrical body 2 that can be expanded and contracted in a radial direction, a vertically long wall body 3 that is continuous with a lower portion of the horizontally long cylindrical body 2 and that can be expanded and contracted vertically, and will be described later. A reinforcing column 4 interposed between the connecting portions of the tide unit 1, 1 composed of the horizontally long cylindrical body 2 and the vertically long wall body 3, and helium gas injection for injecting helium gas into the horizontally long cylindrical body 2. Protection for preventing the giant drifting object Z from colliding with the device 6, the compressed air injection device 7 for injecting the compressed air into the vertical wall 3 and the tide wall Y (see FIG. 5) described later. The wall device 5 is a basic configuration.

  For the horizontally long cylindrical body 2 (FIGS. 3 and 5), a cylindrical sealing film material 21 made of a relatively strong non-breathable sheet material (for example, a tent material) and capable of expanding and contracting in the radial direction is used. Then, helium gas is injected into the cylindrical sealing film material 21 of the horizontally long cylindrical body 2 by a helium gas injecting device 6 as will be described later. Normally, as shown in FIG. Since helium gas is not injected into the body 2, the cylindrical sealing film material 21 is shrunk into a flat shape and the upper and lower thicknesses are reduced. In the illustration of FIG. 3, both ends of the flat portion of the contracted cylindrical sealing film material 21 in the width direction (front-rear direction) are folded upward to reduce the planar area.

  As the vertically long wall 3, a wall-shaped sealing film material 31 made of a relatively strong non-breathable sheet material (for example, a tent material) is used. As the wall-shaped sealing film material 31, a wall-shaped sealing film material 31 having double side surfaces 31a and 31b (FIG. 5) and capable of expanding and contracting in the vertical direction is used. In the vertically long wall 3, the lower end portion of the wall-shaped sealing film material 31 is fixed to the ground side in an airtight state, while the upper end portion of the wall-shaped sealing film material 3 is airtight to the lower surface of the horizontally long cylindrical body 2. It is fixed in a state and the inside is kept sealed.

  Compressed air is injected into the vertically long wall 3 by a compressed air injecting device 7 which will be described later, but normally (in normal times) the air in the vertically long wall 3 is excluded as shown in FIG. Thus, the wall-shaped sealing film material 31 is bent in a zigzag shape over the entire circumference, so that the entire vertically long wall body 3 has a low height.

  As shown in FIGS. 2, 3, and 5, the helium gas injection device 6 uses a helium gas tank 61 filled with helium gas (very light gas) in a compressed state. The helium gas in the helium gas tank 61 can be injected into the horizontally long cylindrical body 2 through the supply pipe 63 by opening the valve 62. Note that the distal end side of the supply pipe 63 for the helium gas injection device 6 is connected to the lower surface of the horizontally long cylindrical body 2 through the inside of the vertically long wall body 3, but the horizontally long cylindrical body 2 moves upward when the tide barrier is extended as will be described later. Therefore, the supply pipe 63 has a bent portion (reference numeral 63a portion) of about 30 to 35 meters in the vertically long wall 3.

  As shown in FIGS. 2, 3, and 5, the compressed air injection device 7 uses a compressed air tank 71 filled with air in a compressed state, and opens the valve 72 when necessary (at the time of notice of the arrival of a large tsunami). Thus, it can be injected into the longitudinal wall 3 through the compressed air supply pipe 73 in the compressed air tank 71. As the compressed air injection device 7, in addition to the compressed air injection from the compressed air tank 71, the compressed air is also injected into the vertically long wall 3 from the pneumatic feed pump using a pneumatic feed pump. You may make it do.

  As shown in FIG. 3, the horizontally long cylindrical body 2 is shrunk into a flat state as usual, but in an emergency (when a large tsunami arrives), helium gas is introduced from the helium gas injection device 6 into the cylindrical sealing film material 21. By being injected, it expands into a horizontally long cylindrical shape as shown by a chain line (reference numeral 2 ') in FIG. When helium gas (light gas) is filled in the horizontally long cylindrical body 2, buoyancy is generated in the horizontally long cylindrical body 2, and the vertically long wall 3 (wall-shaped sealing film) that continues downward due to the buoyancy is generated. The function of pulling up the upper side of the material 31) occurs.

  On the other hand, as shown in FIG. 3, the vertically long wall body 3 also has a side surface portion of the wall-shaped sealing film material 31 that is shrunk in a zigzag shape and has a low height, but in an emergency (when a large tsunami arrives) When the compressed air is injected from the compressed air injection device 7 into the wall-shaped sealing film material 31, the vertically long wall body 3 (wall-shaped sealing film material 31) expands into a vertically long wall shape as shown in FIG. It is like that.

  The horizontally long cylinder 2 and the vertically long wall 3 have the same length on the left and right as a unit of the tide unit 1 (see FIGS. 1, 2, 3, and 5).

  The tide units 1, 1,... Are sequentially arranged on the left and right as shown in FIGS. 1 and 2, and the reinforcing posts 4, 4,.・ It is installed. Each of the reinforcing struts 4, 4,... Can be erected firmly (so as not to fall down) by embedding a predetermined depth of the lower portion thereof in the ground. Moreover, it is good to provide the support material 41 in the land side surface of each reinforcement support | pillar 4,4 ....

  As shown in FIGS. 1 and 5, the reinforcing struts 4, 4,... Have substantially the same height as the maximum height of the tide unit 1 (the tide unit 1 becomes the tide wall Y). However, since the tide unit 1 between the reinforcing struts 4 and 4 is normally maintained at a low height as shown in FIG. 3, the upper portion of the tide unit 1 remains a clear space.

  The vertical wall 3 of the tide unit 1 is installed between the left and right reinforcing columns 4 as follows.

  First, as shown in FIGS. 2 to 5, a plurality of reinforcing pipes 32, 32... For reinforcing the wall-shaped sealing film material 31 are provided on the wall-shaped sealing film material 31 of the vertically long wall body 3. Installed. As the reinforcing pipe 32, a lightweight and bending strength material such as an aluminum alloy is employed.

  Each of the reinforcing pipes 32, 32,... Has a length that extends over the entire length of the vertically long wall 3 and is located above and below the side surface portion 31a of one (sea side) of the wall-shaped sealing film material 31. Are attached in a horizontal posture with a predetermined interval (for example, an interval of 3 to 4 meters). As shown in FIG. 4, the reinforcing pipe 32 is fixed to the outer surface of the side surface portion 31 a of the wall-shaped sealing film material 31 by a stop band 34.

  In the state where the vertically long wall 3 is reduced to a low height (FIG. 3), the reinforcing pipes 32, 32,... The film material 31 is bent in a zigzag shape over the entire circumference.

  As shown in FIGS. 2 and 4, the left and right ends of the reinforcing pipes 32, 32,... Protrude outward outward by a small length from the left and right ends of the vertically long wall 3 (wall-shaped sealing film material 31). Yes. In addition, it is good to attach the rolling wheel 32a to each edge part of the reinforcement pipe 32 so that it may expand in figure in FIG.

  In this first embodiment, as shown in FIGS. 3 and 5, the reinforcing pipe 32 is attached only to the sea side surface portion 31a of the wall-shaped sealing membrane material 31 for weight reduction. The reinforcing pipe 32 may also be attached to the land side surface portion 31 b (FIG. 5) in the wall-shaped sealing membrane material 31. As described above, when the reinforcing pipe 32 is attached to the front and rear side surfaces 31a and 31b of the wall-shaped sealing film material 31, the load when the vertically long wall 3 is extended increases, but the reinforcing function to the vertically long wall 3 is large. It will be a thing.

  As shown in FIGS. 2 to 5, a longitudinal guide member 42 that guides the ends 32 a of the reinforcement pipes 32, 32... Yes. The longitudinal guide member 42 is provided with a guide groove 43 having a U-shaped cross section, and the end portion (rolling wheel 32a) of the reinforcing pipe 32 is vertically moved along the guide groove 43 as shown in an enlarged view in FIG. To be able to guide.

  The front and rear and the upper part of the tide unit 1 are covered with a protective film material 8. This protective film material 8 covers the outside of the tide unit 1 so as to prevent the drifting material from coming into direct contact with the tide unit 1 particularly when the tide wall Y shown in FIG. 5 is completed. The auxiliary membrane material 8 is also folded at a low height in normal times (FIG. 3), but extends upward with the upward extension of the tide unit 1 (FIG. 5). .

  By the way, when a big tsunami arrives, as shown in FIG. 5, a huge drifting substance Z (a ship or a huge floating substance) may come on the tsunami W. On the other hand, the tide bank (tide wall Y) of the first embodiment of the present application is composed of the horizontally long cylindrical body 2 and the vertically long wall body 3 each made of a film material, and the strength against the collision of the giant drifting object Z is very weak. Is.

  Therefore, the seawall of this second embodiment is provided with an upwardly extending type protective wall device 5 in the vicinity of the seaside of the seawall Y that is vertically elongated before the arrival of the great tsunami, The flotation object Z can be prevented from colliding.

  This protective wall device 5 is installed near the sea side of the tide unit 1 (vertically long wall 3), and is bent in a state where a plurality of horizontally long guard members 52, 52,. The guard body 51 can be extended upward by the power unit 55.

  The bending guard body 51 of the protective wall device 5 is configured such that a large number of horizontally long guard members 52, 52,... The bending / stretching guard body 51 is folded in a zigzag at a low position close to the ground in normal times (FIG. 3), but in an emergency (when a large tsunami arrives), as shown in FIG. The device 55 can be extended upward to a height (for example, more than 30 meters) commensurate with the tsunami height assumed.

  As each of the horizontally long guard members 52 of the bending / stretching guard body 51, a high-strength material that is not easily damaged even when the giant drifting object Z collides is formed into a rectangular shape. The horizontally guard material 52 preferably has a structure that prevents the giant drifting substance Z but allows the water pressure of a large tsunami to escape (pass). For example, the horizontally guard material 52 has a wire mesh in a horizontally long rectangular frame. A stretched one is preferred.

  As the power unit 55 in the protective wall device 5, a hydraulic telescopic cylinder in which multiple cylinders are expanded and contracted by a hydraulic cylinder is employed. The power device (hydraulic telescopic cylinder) is provided at a plurality of locations with respect to one unit of the bending / extension guard body 51.

  And this protective wall apparatus 5 lifts the bent guard body 51 (FIG. 3) tsunami by raising the uppermost horizontally long guard material 52 upward by the power unit 55 (the uppermost part of the hydraulic telescopic cylinder). It can be extended upward (FIG. 5) to a height suitable for the height.

  The horizontally long cylindrical body 2, the vertically long wall body 3, the protective wall device 5 (bending and stretching guard body 51, the power device 55), and the protective film material 8 are respectively stored in the storage 9 in the most contracted state shown in FIG. 3. . The hangar 9 is a sturdy structure (for example, made of reinforced concrete) that can withstand the water pressure during a tsunami collision. The hangar 9 may be fixed by driving anchors 9a (FIGS. 3 and 5) into the ground. The upper opening of the hangar 9 may be covered with a cover plate 10 (FIG. 3) in order to prevent rainwater and the like from entering, and the cover plate 10 may be opened when necessary.

  Each operation of the helium gas injector 6, the compressed air injector 7, and the protective wall device 5 can be performed by manual operation at the site, but also by remote operation from a public organization such as a fire department.

  Here, the outline of the size of the various parts in the seawall of this 1st example is shown. The following sizes are not particularly limited, and can be appropriately changed in design.

  The size of the horizontally long cylindrical body 2 can be set to a diameter of 3 to 5 meters and a lateral length of about 40 to 50 meters in the maximum expanded state shown in FIG.

  The size of the vertically long wall 3 is 3 to 5 meters in the front and back thickness, 30 to 40 meters in the vertical direction, and 40 to 50 meters in the horizontal direction in the maximum stretched state shown in FIG. The same).

  In each contracted state of the horizontally long cylindrical body 2 and the vertically long wall body 3 (FIG. 3), the overall height of the tide unit 1 composed of the horizontally long cylindrical body 2 and the vertically long wall body 3 is as low as about 3 to 4 meters. In addition, the height of the hangar 9 that stores the low-height tide unit 1 is also about 3 to 4 meters.

  The protective wall device 5 has a total height in the contracted state (FIG. 3) as low as about 3 to 4 meters, while the upper end height (FIG. 5) assumes the upper end height of the bending guard body 51. It can be set to be higher than the height that meets the tsunami height (for example, about 30 meters).

  Next, the usage method and function of the seawall of 1st Example shown in FIGS. 1-5 are demonstrated.

  First, as shown in the solid line in FIG. 1 and in FIG. 3, the gas inside each of the horizontally long cylindrical body 2 and the vertically long wall body 3 is evacuated and the protective wall device 5 is reduced to the minimum. , They are low enough to fit in the hangar 9.

  And when the big tsunami warning was announced, we examined the expected height of the tsunami, the expected arrival time, etc., and determined that there was a risk of serious damage caused by the tsunami. 3), the cover plate 10 (FIG. 3) is opened, the helium gas injection device 6 and the compressed air injection device 7 are operated, and the power device 55 of the protective wall device 5 is extended. In addition, although operation to each operation device (6, 7, 5) may be performed manually on the spot, when it is remotely managed by a public organization such as a fire department, the remote operation is performed at the public organization. Can do.

  When each of the operating devices is operated, helium gas is injected into the horizontally long cylindrical body 2 by the helium gas injection device 6 (the horizontally long cylindrical body 2 sequentially expands into a cylindrical shape). (The state indicated by reference numeral 2 'in FIG. 3), while the upper side of the vertical wall 3 is pulled upward, compressed air is injected into the vertical wall 3 so that the vertical wall 3 is moved upward. The function which expands and pushes up the horizontal cylinder 2 upwards arises. Therefore, the tide barrier wall Y (FIG. 5) having a predetermined height (for example, 30 to 40 meters in height) is formed between the horizontally long cylindrical body 2 and the vertically long wall body 3 in a relatively short time (before the arrival of the tsunami). Can be completed. In addition, as the tide wall Y extends upward, the protective film material 8 is also pulled upward.

  When the vertically long wall body 3 extends upward, the end portions 32a (FIG. 4) of the reinforcing pipes 32, 32,. Since the guide wall 43 guides and moves upward, the extending operation of the vertically long wall 3 is stabilized, and the side surface portion 31a on the side of the reinforcing pipe 32 in the wall-shaped sealing film material 31 does not bulge outward.

  Separately, the power guard 55 of the protective wall device 5 causes the bending guard body 51 to extend upward as shown in FIG. 5, and the uppermost guard member 52 is high enough to match the expected tsunami height. (E.g., over 30 meters).

  When a large tsunami W rushes against the tide embankment in the completed state of the tide embankment shown in FIG. 5, the tsunami water passes through the bending guard body 51 and reaches the sea side of the tide wall Y (the protective film material 8 bends). However, since the plurality of reinforcing pipes 32, 32,... Are attached to the sea side surface portion 31a of the wall-shaped sealing film material 31 in the vertically long wall body 3 with a vertical interval, the reinforcing pipes 32, 32 are provided. The sea side surface portion 31a of the wall-shaped sealing film material 31 can be reinforced by. Further, each end 32a of each reinforcing pipe 32, 32,... Is guided by a vertically long guide member 42 attached to a strong reinforcing column 4, so that a tsunami is formed on the seaside side (reference numeral 31a) of the tide wall Y. Even if the water pressure of W is applied, the sea side surface portion 31a of the tide wall Y does not greatly deform (bend greatly toward the land side). Therefore, the reinforcing pipe 32 exhibits a considerably great durability against the water pressure of the tsunami W.

  On the other hand, huge drifting objects Z (ships and huge floating objects) may come to the sea tide on the large tsunami, but in front of the sea tide wall Y (on the sea side) up to a height commensurate with the tsunami height. Since there is a stretched bending guard body 51, there is a function that the giant drifting object Z can be blocked by the bending guard body 51 before the giant drifting object Z collides with the seawall Y (the giant drifting object Z collides with the seawall Y). Can be prevented).

  After the tsunami ends, from the state of FIG. 5, the power device 55 of the protective wall device 5 is contracted to fold the bending guard body 51 downward, while the helium gas and the vertical long wall in the horizontally long cylindrical body 2 are folded. By discharging the compressed air in the body 3, the original stored state can be obtained as shown in FIG. 3.

“Second Example of FIG. 6”
FIG. 6 shows the surroundings (four sides) of the structure X (nuclear facility, factory building, etc.) constructed at the seashore using the seawall of the embodiment shown in FIGS. is there.

  That is, in the second embodiment shown in FIG. 6, reinforcing columns 4A, 4A,... Having predetermined heights (for example, about 30 to 40 meters) are erected on the outer sides of the four corners of the structure X. On the other hand, an upwardly extending tide unit 1A, 1A, which is composed of a horizontally long cylindrical body and a vertically long wall body similar to those of the first embodiment, between a pair of adjacent reinforcing struts 4A, 4A (4 positions). Is interposed.

  The tide unit 1A, 1A,... Is reduced to a low height as shown by a solid line in normal times. However, in an emergency (at the time of notification of the arrival of a large tsunami), the helium gas injection device and compression of the first embodiment Each of the tide units 1A, 1A,... Is extended upward along the two reinforcing struts 4A, 4A as indicated by chain lines (reference numeral 1A ') by the air injection device, so that the four tide units around the structure X are respectively 1A ′, 1A ′,... Can be surrounded.

  Therefore, in the tide embankment of the second embodiment, tsunami water is filled outside each tide unit 1A ′, 1A ′,... Surrounding the structure X when a large tsunami arrives. There is a function to prevent flooding.

  Each tide unit 1A (1A ') used in the second embodiment basically has the same function as the tide unit 1 of the first embodiment (FIGS. 1 to 5).

  1 is a tide unit, 2 is a horizontally long cylindrical body, 3 is a vertically long wall body, 4 is a reinforcing column, 5 is a protective wall device, 6 is a helium gas injection device, 7 is a compressed air injection device, 21 is a cylindrical sealed membrane material, 31 is a wall-shaped sealing membrane material, 32 is a reinforcing pipe, 42 is a longitudinal guide material, 43 is a guide groove, 51 is a bending guard body, 52 is a lateral guard material, 55 is a power unit, 61 is a helium gas tank, and 71 is compressed air Tank, X is a structure, Y is a seawall, and Z is a huge drifting object.

Claims (3)

It is a coastal levee with an upward extension that has a function to block the tsunami by extending it upwards before the arrival of a large tsunami.
A horizontally long cylinder (2) made of a cylindrical sealing film material (21) provided on the upper side of the seawall and freely expandable and contractable in the radial direction, and a lower part of the horizontally long cylinder (2). A vertically long wall body (3) made of a wall-shaped sealing film material (31) that can be expanded and contracted in the vertical direction, and a helium gas injection device (6) for injecting helium gas into the horizontally long cylinder body (2), While having a compressed air injection device (7) for injecting compressed air into the longitudinal wall (3),
The horizontally long cylinder (2) generates buoyancy when helium gas is injected by the helium gas injection device (6).
When the compressed air is injected by the compressed air injection device (7), the vertically long wall (3) expands upward and pushes up the horizontally elongated cylinder (2).
A plurality of reinforcing pipes (32, 32,...) Are attached to the wall-shaped sealing film material (31) of the vertically long wall body (3) in a horizontal orientation at a predetermined interval in the vertical direction.
An upward-extending type seawall. In claim 1,
The horizontally long cylinder (2) and the vertically long wall (3) have the same length on the left and right as a unit of the tide unit (1), and a plurality of tide units (1, 1) are sequentially added. While continuously arranged on the left and right,
Between each of the tide units (1, 1), a reinforcing column (4) having the same height as the maximum extension of the tide unit (1) is interposed,
A vertical guide groove (43) for vertically guiding the end of the reinforcing pipe (32) of the vertical wall body (3) is provided on the side surface of the reinforcing column (4). The ends of the reinforcing pipes (32, 32,...) Are guided up and down.
An upward-extending type seawall. In claim 1 or 2,
A bending guard body (51) in a state in which a plurality of horizontally long guard members (52, 52,...) Is folded up and down freely at a position near the sea side of the vertically long wall body (3) is a power unit (55). Is installed with an upward extension type protective wall device (5) that can be extended upward with
The bending and stretching guard body (51) can be extended upward to a height commensurate with the assumed tsunami height.
An upward-extending type seawall.

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