JP7664749B2 - Water stop mechanism - Google Patents

Description

The present invention relates to a water-stopping mechanism.

The following Patent Document 1 shows a water-stopping device that prevents water from seeping inside the side wall by pulling up a sheet storage cylinder housed in a storage hole, pulling out a water-stopping sheet from the sheet storage cylinder, and engaging a hook on the water-stopping sheet with the side wall.

JP 2007-231574 A

The water-stopping device in Patent Document 1 uses a lightweight water-stopping sheet compared to water-stopping doors or water-stopping members made of metal plate materials such as aluminum alloys or steel. This makes it relatively easy to perform water-stopping work. However, in situations where it is difficult to perform water-stopping work manually, such as at night or when no one is present, it is difficult to prevent water from seeping into the side walls, i.e., the inside of the wall body.

Taking the above facts into consideration, the objective of the present invention is to provide a water-stopping mechanism that can prevent water from entering the inside of a wall without manual intervention.

The water-stopping mechanism of claim 1 comprises a wall having an entrance/exit formed therein, a water-stopping member that is movable between a stored state in which it is stored in a storage groove formed in the ground around the periphery of the entrance and a water-stopping state in which it rises from the storage groove due to the water pressure of water guided to the storage groove to prevent water from seeping in from the outside to the inside of the wall, and a water channel member that forms a water conduit that guides water outside the wall to the storage groove, and the water channel member forms the water channel that guides water flowing on the ground from one end that opens to the ground on the outside of the wall to the other end that opens to the bottom surface of the storage groove .

According to the water-stopping mechanism of claim 1, the water-stopping member stored in the storage groove rises due to the water pressure of the water guided from the water conduit into the storage groove. This prevents water from outside the wall from penetrating into the inside of the wall through the entrance and exit. This means that there is no need to manually lift the water-stopping member. In other words, water can be prevented from penetrating into the inside of the wall without any human effort. There is also no need to use mechanical power.

In one embodiment of the water-stopping mechanism, the waterway member forms a water channel that guides water flowing along the ground from one end that opens onto the ground outside the wall body to the other end that opens onto the bottom surface of the storage groove.

According to one aspect of the water-stopping mechanism, water flowing on the ground outside the wall is guided to the water conduit, and the water rises the water-stopping member. In other words, in a situation where water flows on the ground due to a torrential rain, the water is guided from the water conduit to the inside of the storage groove. This makes it possible to prevent water from entering the inside of the wall without the need for human intervention, even if a torrential rain occurs, for example, at night.
The water-stopping mechanism of claim 2 is the water-stopping mechanism described in claim 1, in which a protrusion is formed on the groove bottom of the storage groove or the bottom surface of the water-stopping member, and a gap is formed between the groove bottom of the storage groove and the bottom surface of the water-stopping member in the stored state.
The water-stopping mechanism of claim 3 is the water-stopping mechanism described in claim 1 or 2, and further comprises a locking protrusion protruding from the ground toward the inside of the storage groove, and a groove formed in the vertical direction from the upper end surface of the water-stopping member and in which the locking protrusion is accommodated.

The water-stopping mechanism of claim 4 comprises a wall having an entrance/exit formed therein, a water-stopping member that is movable between a stored state in which it is stored in a storage groove formed in the ground around the entrance and a water-stopping state in which it rises from the storage groove due to the water pressure of water guided to the storage groove to prevent water from seeping in from the outside to the inside of the wall, and a water channel member that forms a water conduit that guides water outside the wall to the storage groove, wherein the water-stopping member and the storage groove are formed so that their widths gradually decrease from bottom to top, and the maximum width of the water-stopping member is greater than the minimum width of the storage groove.

According to the water-stopping mechanism of claim 4 , the water-stopping member and the storage groove are formed so that their widths gradually decrease from the bottom to the top. Also, the maximum width of the water-stopping member is greater than the minimum width of the groove. As a result, the water-stopping member that rises due to the water guided into the storage groove is caught by the storage groove and is prevented from rising. This makes it possible to prevent the water-stopping member from floating up and coming out of the storage groove. This makes it possible to maintain the water-stopping function.

A water-stopping mechanism according to a fifth aspect of the present invention is the water-stopping mechanism according to any one of the first to fourth aspects, wherein the water-stopping member is molded using carbon fiber reinforced plastic.

According to the water-stopping mechanism of claim 5 , the water-stopping member is molded using carbon fiber reinforced plastic. Carbon fiber reinforced plastic has a higher compression strength ratio than steel, glass fiber reinforced plastic, etc. Therefore, it is easily floated by the water guided into the storage groove, and is not easily damaged by the water pressure flowing on the ground. This makes it easier to ensure water-stopping properties.
The water-stopping mechanism of claim 6 comprises a wall body having an entrance/exit formed therein, a water-stopping member that is movable between a stored state in which it is stored in a storage groove formed in the ground around the entrance/exit and a water-stopping state in which its bottom surface is pressed by the water pressure of water guided to the bottom of the storage groove and it rises out of the storage groove to prevent water from seeping in from the outside to the inside of the wall body, and a water channel member that forms a water conduit that guides water outside the wall body to the bottom of the storage groove.

This invention makes it possible to prevent water from seeping inside a wall without any manual work.

1A is a perspective view showing a water-stopping member according to an embodiment of the present invention in a stored state, and FIG. 1B is a perspective view showing a water-stopping member in a water-stopping state. 1 is a perspective view showing an example of a configuration of a water-stopping member according to an embodiment of the present invention. 1A is a plan view showing an example of a positional relationship between a wall body and a water-stopping member in a water-stopping state, and FIG. 1B is a plan view showing another example. 1A is a cross-sectional view showing the water channel member and the water-stopping member in a stored state, and FIG. 1B is a cross-sectional view showing the water channel member and the water-stopping member in a water-stopping state. FIG. 11 is a cross-sectional view showing a state in which water is being drained from the water channel member. 1A is a perspective view showing an example in which a water-stopping member is formed in a trapezoidal cross-sectional view, and FIG. 1B is a cross-sectional view showing the trapezoidal water-stopping member and a storage groove. 13 is a perspective view showing an example of a suppression mechanism that suppresses the water stop member from coming off the storage groove. FIG. (A) is a plan cross-sectional view showing an example in which the skeleton of a water-stopping member is arranged along a direction intersecting the in-plane direction of the surface material, (B) is a plan cross-sectional view showing an example in which the skeleton is arranged along a direction perpendicular to the in-plane direction of the surface material, (C) is a plan cross-sectional view showing an example in which the internal space of the water-stopping member is divided more finely than (A), and (D) is a plan cross-sectional view showing an example in which the skeleton is formed by molding a single plate into a corrugated shape. 1A is a perspective view showing an example in which a protrusion is formed on the groove bottom of a storage groove, and FIG. 1B is a perspective view showing an example in which a protrusion is formed on the bottom surface of a water-stopping member. FIG. 11 is a cross-sectional view showing an example in which a slope is provided on the ground and the waterway member. FIG. 11 is a cross-sectional view showing an example of a waterway member provided with a branch pipe that opens into a river or the like.

The water-stopping mechanism according to an embodiment of the present invention will be described below with reference to the drawings. Components indicated with the same reference numerals in each drawing are the same components. However, unless otherwise specified in the specification, each component is not limited to one, and there may be multiple components.

In addition, explanations of configurations and symbols that are duplicated in each drawing may be omitted. Note that the present invention is not limited to the following embodiments, and may be implemented with appropriate modifications, such as omitting configurations or replacing them with different configurations, within the scope of the purpose of the present invention.

In each figure, the directions indicated by the arrows X and Y are directions along a horizontal plane and are perpendicular to each other. The direction indicated by the arrow Z is a direction along the vertical direction (up and down direction). In each figure, the directions indicated by the arrows X, Y, and Z are assumed to be consistent with each other.

<Water stop mechanism>
As shown in FIGS. 1(A) and 1(B), a water-stopping mechanism 10 according to an embodiment of the present invention includes a wall body 22, a water-stopping member 40, and a water channel member 60.

(Wall)
The wall 22 is an exterior wall that forms the building 20. The building 20 is an architectural structure constructed on ground G. The wall 22 of the building 20 is formed with an entrance/exit 22E through which people can walk between the outside and inside of the building 20. The entrance/exit 22E is an opening in the wall 22 formed facing the ground G and is an opening along the X direction.

In addition, the wall body in this invention includes not only the exterior wall that forms the building 20, but also the fences that surround the periphery of the building and various structures. In addition, the ground G includes soil, improved soil, the foundation of the building 20, etc.

(Water-stopping member)
A storage groove GH is formed below the entrance 22E in the ground G. The storage groove GH is a bottomed hole formed on the surface of the ground G, i.e., the ground GL. Note that "a hole formed in the ground GL" includes a hole formed in concrete buried in the ground GL, a hole formed by burying a box-shaped member made of metal such as steel with an open top in the ground G, and the like.

A water-stopping member 40 is stored in the storage groove GH. The water-stopping member 40 is a plate-shaped member that can move between a storage state in which it is stored in the storage groove GH as shown in FIG. 1(A) and a water-stopping state as shown in FIG. 1(B). The "water-stopping state" refers to a state in which water ingress from the outside to the inside of the wall body 22 can be suppressed. Specifically, it refers to a state in which the water-stopping member 40 rises from the storage groove GH due to the water pressure of water guided from the storage state to the storage groove GH.

The width (dimension along the X direction) of the water-stopping member 40 and the length (dimension along the X direction) of the storage groove GH are the same dimension W [m]. In addition, the thickness (dimension along the Y direction) of the water-stopping member 40 and the width (dimension along the Y direction) of the storage groove GH are the same dimension D [m]. "Equal dimensions" includes a state in which there is a gap large enough for the water-stopping member 40 to move up and down inside the storage groove GH without any hindrance.

As shown in Fig. 2, the water-stopping member 40 is a rectangular parallelepiped with a hollow structure. Specifically, the water-stopping member 40 is formed by fixing a framework 42 formed by assembling plate-shaped carbon fiber reinforced plastics in a lattice pattern to the inside of a surface material 44 of carbon fiber reinforced plastics formed in a box shape. This adjusts the density of the water-stopping member 40 (ρ' [t/ ^m3 ] described later) to be smaller than the density of water (ρ [t/ ^m3 ] described later). The height of the water-stopping member 40 is dimension L [m].

(Positional relationship between wall body and water-stopping member)
3A shows the positional relationship between the wall body 22 and the water-stopping member 40 in a water-stopping state. As shown in this figure, in the water-stopping state, the water-stopping member 40 is disposed at the entrance 22E of the wall body 22.

The wall body 22 has frames 24 formed on both sides of the entrance 22E. The back surface 40A of the water-stopping member 40 (the surface facing the space inside the wall body 22) is arranged opposite the frames 24, ensuring water-stopping performance between the frames 24 and the back surface 40A.

A gasket 26 made of an elastic material such as rubber may be placed between the frame 24 and the back surface 40A to improve water stopping properties. The gasket 26 may be fixed to the frame 24 or to the back surface 40A of the water stopping member 40. The gasket 26 may also be omitted. To simplify the illustration, the frame 24 is omitted in all figures other than FIG. 3(A).

The water-stopping member 40 may be disposed outside the entrance 22E as shown in FIG. 3(B). In this case, the water-stopping member 40 is disposed so that the surface (outer surface) of the wall body 22 and the back surface 40A of the water-stopping member 40 face each other. In addition, a storage groove GH (see FIG. 1) in which the water-stopping member 40 is stored is formed outside the entrance 22E.

In this way, the "storage groove formed in the ground around the entrance" in this invention includes the storage groove GH formed in the ground GL directly below the entrance 22E and the storage groove formed outside the entrance 22E.

(Waterway components)
As shown in FIG. 4A, the water channel member 60 is a pipe that forms a water channel that guides water outside the wall body 22 to the storage groove GH.

The waterway member 60 is a pipe that guides water flowing on the ground GL from end 60A, which is one end that opens to the ground GL outside the wall body 22, to end 60B, which is the other end that opens to the bottom surface of the storage groove GH. To simplify the illustration, the waterway member 60 is drawn with a single line in each figure. End 60A is formed at a position farther away from the wall body 22 than the water-stopping member 40. It is also preferable that end 60A is formed at the same height as the water-stopping member 40 or at a lower position than the water-stopping member 40.

The waterway member 60 is connected to a drain pipe 62. Specifically, the lowest point of the waterway member 60 is connected to the drain pipe 62, and a drain valve 64 is provided at the connection point. The drain valve 64 can be opened and closed by operating from the ground.

As shown in this figure, when in the stored state, the height of the top surface of the water-stopping member 40 is the same as the ground GL.

<Action and Effects>
According to the water-stopping mechanism of an embodiment of the present invention, as shown in FIG. 4(B), the water-stopping member 40 stored in the storage groove GH rises due to the water pressure (hydrostatic pressure) of water guided into the inside of the storage groove GH from the water conduit formed by the water channel member 60.

This prevents water from outside the wall body 22 from penetrating into the inside of the wall body 22 through the entrance/exit 22E. Therefore, there is no need to manually lift the water-stopping member 40. In other words, water can be prevented from penetrating into the inside of the wall body 22 without any human effort. There is also no need to use mechanical power.

Here, the rising height of the water-stopping member 40, i.e., the protruding height from the ground GL, will be described. The weight of the water-stopping member is P [kg], the bottom area is S [ ^m2 ], the density of water is ρ [kg/ ^m3 ], and the acceleration of gravity is g [m/ ^s2 ]. As shown in Figure 4 (B), when the water-stopping member 40 is sunk to a depth h [m] in the storage groove GH, the weight of the water-stopping member 40 is balanced with the hydrostatic pressure and is expressed by the following formula (1).

P=ρgh×S...(1)

Furthermore, if the volume of the water-stopping member 40 is V [m ³ ] and the density is ρ′ [t/m ³ ], the weight of the water-stopping member 40 can also be expressed by the following formula (2).

P=ρ'V×g...(2)

Furthermore, the volume V [m ³ ] of the water-stopping member 40 is expressed by the following formula (3).

V=S×L...(3)

From the above formulas (1) to (3), the sinking depth h of the water-stopping member 40 is expressed by the following formula (4).

h=(ρ'/ρ)×L...(4)

Here, when the density of water ρ [t/m ³ ] is 1, equation (4) can be transformed into the following equation (4-1).

h=ρ'×L...(4-1)

Furthermore, the floating height of the water-stopping member 40, i.e., the height (L-h) [m] from the ground GL, is expressed by the following formula (5) based on formula (4-1).

L-h=(1-ρ')L...(5)

As described above, the density ρ' [t/m ³ ] of the water-stopping member 40 is smaller than the density of water. When the density of water is less than 1, the water-stopping member 40 protrudes from the ground surface GL. This protruding height can be set arbitrarily by adjusting the vertical dimension L [m] of the water-stopping member 40 or the density ρ' [t/m ³ ] of the water-stopping member 40.

In addition, according to the water-stopping mechanism of the embodiment of the present invention, water flowing on the ground surface GL outside the wall body 22 is guided to the water conduit formed by the water channel member 60, and this water causes the water-stopping member 40 to rise.

In other words, in a situation where water flows onto the ground GL due to a torrential downpour or the like, the water is guided from the water conduit into the inside of the storage groove GH. This makes it possible to prevent water from entering the inside of the wall body 22 without the need for human intervention, even if a torrential downpour occurs, for example, at night.

In addition, in the water-stopping mechanism according to an embodiment of the present invention, the water-stopping member 40 is molded using carbon fiber reinforced plastic. Carbon fiber reinforced plastic has a higher compression strength ratio than steel, glass fiber reinforced plastic, etc. Therefore, it is easily floated by the water guided into the storage groove GH, and is not easily damaged by the water pressure flowing through the ground GL. This makes it easier to ensure water-stopping performance.

In addition, according to the water stop mechanism of the embodiment of the present invention, the lowest point of the water channel member 60 is connected to the drain pipe 62, and a drain valve 64 is provided at the connection point. The drain valve 64 can be opened and closed by operating it from the ground.

As a result, after flooding such as heavy rain, once the water has disappeared from the surface of the ground GL, the drain valve 64 can be opened to drain the water from the water conduit formed by the water channel member 60 and the inside of the storage groove GH.

<Variations of the embodiment>
(Variations in the shapes of the water-stopping member and the storage groove)
In the above embodiment, the water-stopping member 40 has a rectangular parallelepiped shape as shown in Fig. 2, but the embodiment of the present invention is not limited to this. The water-stopping member of the present invention may be formed so that the cross-sectional shape along the Y direction and the Z direction is a trapezoid, as in the water-stopping member 50 shown in Figs. 6(A) and 6(B).

When stored in the storage groove GM, the water-stopping member 50 is formed so that its width gradually decreases from bottom to top.

Specifically, the side surfaces 50A and 50B of the water-stopping member 50 are formed to be inclined inward with respect to the bottom surface 50C. The inclination angles θ1 and θ2 of the side surfaces 50A and 50B with respect to the bottom surface 50C may be different from each other, but in this embodiment, the inclination angles θ1 and θ2 are equal to each other. In addition, the thickness (dimension along the Y direction) of the bottom surface 50C is dimension D1.

As shown in FIG. 6B, the groove walls GM1 and GM2 that form the storage groove GM are inclined inward with respect to the groove bottom GM3. The inclination angles θ3 and θ4 of the groove walls GM1 and GM2 with respect to the groove bottom GM3 may be different from each other, but in this embodiment, the inclination angles θ3 and θ4 are equal to each other. In addition, the width of the opening end of the storage groove GM (the dimension along the Y direction) is dimension D2.

In this way, the water-stopping member 50 and the storage groove GM are formed so that their width (dimension along the Y direction) gradually decreases from bottom to top. In addition, the dimension D1 of the bottom surface 50C, which is the maximum width of the water-stopping member 50, is greater than the dimension D2, which is the minimum width of the opening end of the storage groove GM.

As a result, the water-stopping member 50 that rises due to the water guided inside the storage groove GM is caught in the storage groove GM and prevented from rising. This prevents the water-stopping member 50 from coming off the storage groove GM when it floats up. This allows the water-stopping performance to be maintained.

Regardless of whether the inclination angles θ1 and θ2 are different or the same, and regardless of whether the inclination angles θ3 and θ4 are different or the same, it is preferable that the inclination angles θ1 and θ3 are equal to each other. Similarly, it is preferable that the inclination angles θ2 and θ4 are equal to each other.

As a result, when the water-stopping member 50 rises due to the pressure of the water guided into the storage groove GM, the side surface 50A and the groove wall GM1 come into close contact with each other, and the side surface 50B and the groove wall GM2 come into close contact with each other. This makes it possible to prevent water from overflowing from the storage groove GM.

As a mechanism for preventing the water-stopping member from coming out of the storage groove, for example, a locking mechanism 70 as shown in FIG. 7 may be used. The locking mechanism 70 is formed with a locking protrusion 72 and a locking groove 74.

The locking projection 72 is a projection that protrudes from the ground G toward the inside of the storage groove GH, and is formed, for example, at the open end of the storage groove GH. After the storage groove GH is formed in the ground G and the water-stopping member 40 is stored in the storage groove GH, the locking projection 72 is fixed to the member that forms the storage groove GH (such as the above-mentioned concrete or steel member).

The locking groove 74 is a groove formed on the back surface 40A of the water-stopping member 40 in the vertical direction from the upper end surface 40B, and is sized to accommodate the locking protrusion 72 in a plan view. The length LA of the locking groove 74 is the height at which the water-stopping member 40 protrudes from the ground surface GL in the water-stopping position plus the height LB of the locking protrusion 72.

(Water-stopping material variations)
In the above embodiment, as shown in FIG. 2, the water-stopping member 40 is formed using the framework 42 in which plate-shaped carbon fiber reinforced plastics are assembled in a lattice pattern, but the embodiment of the present invention is not limited to this.

For example, the skeleton forming the water-stopping member 40 may be formed in a rib shape, as in skeletons 43, 45, 46, and 47 shown in Figures 8(A) to (D). A "rib-shaped" skeleton refers to a skeleton formed by extending in the Z direction.

Of these, the skeleton 43 shown in FIG. 8(A) is extended in the Z direction and is arranged along a direction intersecting the in-plane direction of the surface material 44 formed in a box shape. The skeleton 45 shown in FIG. 8(B) is extended in the Z direction and is arranged along a direction perpendicular to the in-plane direction of the surface material 44.

Furthermore, the skeleton 46 shown in FIG. 8(C) is extended in the Z direction and is arranged along a direction intersecting the in-plane direction of the surface material 44. Compared to the skeleton 43, the skeleton 46 divides the internal space of the water-stopping member 40 into smaller sections. Furthermore, the skeleton 47 shown in FIG. 8(D) is formed from a single plate into a corrugated shape and is arranged extending in the Z direction.

The material from which the water-stopping member 40 is formed is not limited to carbon fiber reinforced plastic. For example, various materials can be used, such as a composite material of glass fiber and allyl resin, a composite material of glass fiber and epoxy resin, a composite material of glass fiber and phenolic resin, a composite material of α-cellulose and urea resin, melamine resin, a composite material of α-cellulose and melamine resin, cellulose propionate, nitrocellulose, and ethyl cellulose.

The material for forming the water-stopping member 40 may be any material that can make the density ρ' [t/ ^m3 ] of the water-stopping member 40 smaller than that of water when it is molded into a shape to be stored in the storage groove GH. In addition to the above-mentioned resin materials, for example, lightweight concrete or a metal honeycomb panel may be used.

(Variations of waterway)
In the water channel member 60, water guide members 82, 84 shown in Figures 9(A) and 9(B) may be provided at the end 60B that opens to the bottom surface of the storage groove GH.

The water guide member 82 shown in FIG. 9(A) is a protrusion formed facing upward on the groove bottom GHC of the storage groove GH. When the water stop member 40 is in the stored state, the bottom surface 40C of the water stop member 40 is positioned in contact with this water guide member 82.

As a result, a gap is formed between the groove bottom GHC of the storage groove GH and the bottom surface 40C of the water-stopping member 40. Water guided from the water conduit formed by the water channel member 60 into the interior of the storage groove GH first fills this gap. As a result, the water is guided so that it comes into contact with the entire bottom surface 40C of the water-stopping member 40, allowing a pressing force to be applied to the entire bottom surface of the water-stopping member 40.

The water guide member 84 shown in FIG. 9(B) is a downward protrusion formed on the bottom surface 40C of the water stop member 40. When the water stop member 40 is in the stored state, the water guide member 84 formed on the bottom surface 40C of the water stop member 40 is disposed in contact with the groove bottom GHC of the storage groove GH. The effect of the water guide member 84 is similar to that of the water guide member 82.

In addition, the waterway member 60 may be provided with a gradient toward the storage groove GH when in the horizontal position, as shown in FIG. 10. The "gradient toward the storage groove GH" is a gradient that causes the storage groove GH to be below water.

Furthermore, the ground GL on the outside of the wall body 22 may also be provided with a gradient toward the end 60A of the water channel member 60. By providing such a gradient to at least one of the water channel member 60 and the ground GL, the timing for raising the water stop member 40 can be accelerated.

Furthermore, the portion of the ground GL where the storage groove GH is formed, i.e., the peripheral portion of the wall body 22, may be formed higher than the surrounding ground GL. This makes it possible to delay the timing at which water flowing along the ground GL reaches the peripheral portion of the wall body 22.

As shown in FIG. 11, the water channel member 60 may be formed with a branch pipe 66, and the end 66A of the branch pipe 66 may be open to the sea, a lake, a river, etc. (hereinafter referred to as "rivers, etc."). In this case, the inside of the water channel member 60 is filled with water in advance, and the water level is equal to the water level of the river, etc. This makes it possible to guide water from the river, etc. to the storage groove GH before it overflows onto the ground GL during heavy rain, etc.

Thus, in the present invention, "water outside the wall" includes not only water flowing on the ground GL but also water from rivers, etc. When low-density water such as seawater is guided into the waterway member 60, the density ρ' [t/m ³ ] of the waterstop member 40 is adjusted appropriately.

The water channel member 60 in the state shown in Figures 4 and 10 may be filled with water in advance. This can hasten the timing of raising the water-stopping member 40. In this case, it is preferable that the filling height is, for example, equal to or less than the height of the end 60B of the water channel member 60 so that the water-stopping member 40 does not rise during normal rainy weather due to the water pre-filled in the water channel member 60.

10 Water-stopping mechanism 22 Wall body 22E Entrance/exit 40 Water-stopping member 50 Water-stopping member 60 Waterway member 60A End (one end)
60B End (other end)
GH Storage Groove GM Storage Groove

Claims (6)

A wall having an entrance and exit formed therein;
a water-stopping member that is movable between a stored state in which the water-stopping member is stored in a storage groove formed in the ground around the entrance and a water-stopping state in which the water-stopping member rises from the storage groove due to the water pressure of water guided to the storage groove to prevent water from entering from the outside to the inside of the wall body;
a water channel member forming a water channel for guiding water outside the wall body to the storage groove;
Equipped with
The water channel member is
The water channel is formed to guide water flowing on the ground from one end that opens on the ground outside the wall body to the other end that opens on the bottom surface of the storage groove.
Water stop mechanism. A protrusion is formed on the bottom of the storage groove or on the bottom surface of the water-stopping member,
A gap is formed between the bottom of the storage groove and the bottom surface of the water-stopping member in the stored state.
The water blocking mechanism according to claim 1 . A locking projection protruding from the ground toward the inside of the storage groove;
a groove formed in the up-down direction from the upper end surface of the water-stopping member and accommodating the locking projection;
The waterproofing mechanism according to claim 1 or 2. A wall having an entrance and exit formed therein;
a water-stopping member that is movable between a stored state in which the water-stopping member is stored in a storage groove formed in the ground around the entrance and a water-stopping state in which the water-stopping member rises from the storage groove due to the water pressure of water guided to the storage groove to prevent water from entering from the outside to the inside of the wall body;
a water channel member forming a water channel for guiding water outside the wall body to the storage groove;
Equipped with
The water-stopping member and the storage groove are formed so that their widths gradually decrease from the bottom to the top,
A water- stopping mechanism, wherein the maximum width of the water-stopping member is greater than the minimum width of the storage groove. The water-stopping mechanism according to any one of claims 1 to 4 , wherein the water-stopping member is made of carbon fiber reinforced plastic. A wall having an entrance and exit formed therein;
a water-stopping member that is movable between a stored state in which the member is stored in a storage groove formed in the ground around the edge of the entrance and a water-stopping state in which the bottom surface of the member is pressed by the water pressure of water guided to the bottom of the storage groove and the member rises from the storage groove to suppress water intrusion from the outside to the inside of the wall body;
a water channel member forming a water channel for guiding water outside the wall body to a bottom of the storage groove;
Equipped with a water-stopping mechanism.