Water-stopping structure

Abstract

To provide a water cut-off structure allowing an anti-inundation protection area to be easily expanded while preventing flooding.SOLUTION: A water cut-off structure of an embodiment of the present invention is configured to connect waterproof sheet members 2a, 2b in a rectangular sheet shape on which a heavy object is installed. Two surface fasteners 18a, 18b are arranged on an end part 17a of the sheet member 2a in a longitudinal direction with a gap therebetween in the longitudinal direction, applying for the sheet member 2b in a same manner. A cut-off member 19 of an elastic body is arranged in the gap. This configuration allows an installation area of the heavy object to be easily expanded while preventing flooding from a connection part 16 because the sheet members 2a, 2b are connected only by overlapping their end parts to each other.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a water stopping structure, and more particularly to a water stopping structure that prevents water from entering using heavy objects such as sandbags. [Background technology]

[0002] FIG. 10 is a perspective view showing a conventional water stopping structure.

[0003] Referring to the figure, the waterproof structure 81 is configured by stacking a plurality of sandbags 84 side by side on a floor 83 on the outdoor side of a wall 82, which is the frontage of a facility 90. The sandbags 84 are heavy bags made of polyethylene or the like and filled with earth and sand. This prevents flooding into the facility 90 in the event of a flood or other disaster.

[0004] FIG. 11 is an end view of the XI-XI line shown in FIG. 10 when sandbags are stacked in three layers in a conventional waterproof structure.

[0005] Referring to the same figure, in the water stopping structure 81 configured as described above, typical sandbags 84 have rounded corners, which results in multiple gaps around the sandbags 84, such as gap 86 between adjacent sandbags 84a, 84b (gap 86 between sandbags 84a, 84b and floor 83). Because there is a risk that water may leak from these gaps around the sandbags 84, reducing the water stopping function, a method has been devised in which multiple sandbags 84 are covered with a waterproof sheet material. Summary of the Invention [Problem to be solved by the invention]

[0006] However, when protecting a wide area from flooding, the sheet materials must be joined together because there is a limit to their length. However, simply overlapping the ends of the sheets can lead to water leakage.

[0007] There are several methods for connecting sheets of material together to make them waterproof, such as heat welding, adhesives, and mechanical fastening with metal fittings, but these methods have problems such as requiring skilled workers, requiring preparation and time, and being unable to work in bad weather.

[0008] Furthermore, the above problems are not limited to the facility 90, but also occur in water-stopping structures such as water-stopping dams constructed as emergency measures in the event of a river levee collapse or in water-changing works during river construction.

[0009] The present invention has been made to solve the above-mentioned problems, and has an object to provide a waterproof structure that can easily expand the range of water ingress prevention measures while preventing water ingress. [Means for solving the problem]

[0010] In order to achieve the above object, the invention described in claim 1 is a water-stopping structure that prevents water from entering by a heavy object, and comprises a waterproof rectangular sheet material that extends in a direction perpendicular to the water ingress direction when installed, a plurality of heavy objects that are arranged in a row in the direction perpendicular to the water ingress direction and installed above the sheet material, and a hard jig that is installed between the sheet material and the plurality of heavy objects and extends in the direction perpendicular to the water ingress direction, and the longitudinal end of the sheet material is provided with a connecting portion that includes two fixing means that are provided at a distance from each other in the longitudinal direction and that fix the relative positions of the two sheet materials, and a water-stopping material made of an elastic body that is provided between the two fixing means, and the jig is 1 bottle It is rod-shaped and is located below the heavy object. center It is installed in a position that abuts on a part of the installation surface of the heavy object. The weight of the heavy object is concentrated below the jig. This is what is done.

[0011] With this configuration, the sheet materials can be connected simply by overlapping their ends. In addition, the weight of the heavy object is concentrated below the jig.

[0012] The invention described in claim 2 is the same as the invention described in claim 1, in which a heavy object is placed above the water-stopping material at the connecting portion.

[0013] With this configuration, the weight of a heavy object is applied to the waterproofing material.

[0014] The invention described in claim 3 is the same as the invention described in claim 1 or claim 2, in which the fixing means is a hook-and-loop fastener extending in the short direction of the sheet material, the hook-and-loop fastener and the water-stopping material are flexible, the short-side end of the sheet material including the hook-and-loop fastener and the water-stopping material is folded upward, and at least a portion of the side of the heavy object is covered by the sheet material.

[0015] When configured in this manner, the connecting portion is folded back to form a three-dimensional structure.

[0016] The invention described in claim 4 is the configuration of the invention described in any one of claims 1 to 3, in which the sheet material is connected to other sheet materials that intersect with each other along the installation area.

[0017] This configuration makes it possible to accommodate complex terrain where flood prevention measures are required, such as in corners.

[0018] The invention described in claim 5 is the configuration of the invention described in any one of claims 1 to 4, further comprising a second sheet material made of an elastic material and placed between the sheet material and the ground surface.

[0019] With this configuration, the load of the heavy object is transmitted more uniformly to the contact surface by the sheet material and the second sheet material. The invention of claim 6 is a water-stopping structure that prevents water from entering by using a heavy object, and includes a waterproof rectangular sheet material that extends in a direction perpendicular to the water ingress direction when installed, and a heavy object that is installed above the sheet material and arranged in a direction perpendicular to the water ingress direction. a hard jig that is installed between the sheet material and the plurality of heavy objects and extends in a direction perpendicular to the water immersion direction;The sheet material is provided with a connecting portion including two fixing means provided at longitudinal ends with a gap in the longitudinal direction and fixing the relative positions of the two sheet materials, and a waterproofing material made of an elastic body provided at the gap between the two fixing means, and the sheet material is folded upward so that the lateral ends cover at least a part of the side and top surfaces of the multiple heavy objects, and a weight is connected to the folded end of the sheet material and hung on the side opposite to the side. The jig is a rod-shaped fixture that is installed in the center below the heavy object and abuts against a part of the installation surface of the heavy object, so that the load of the heavy object is concentrated below the jig. This is what is done. With this configuration, the sheet materials can be connected simply by overlapping their ends. In addition, the weight of the heavy object is concentrated below the jig. The invention described in claim 7 is a water-stopping structure that prevents water from entering by a heavy object, A waterproof rectangular sheet material that extends in a direction perpendicular to the inundation direction when installed, and a heavy object that is installed above the sheet material and arranged in a direction perpendicular to the inundation direction. a hard jig that is installed between the sheet material and the plurality of heavy objects and extends in a direction perpendicular to the water immersion direction; The sheet material is provided with two fixing means provided at the longitudinal end portion thereof at an interval in the longitudinal direction, which fix the relative positions of the two sheet materials, and a connecting portion provided between the two fixing means and including a water-stopping material (excluding adhesive and pressure-sensitive adhesive) made of an elastic body, and a heavy object is installed above the water-stopping material at the connecting portion. The jig is a rod-shaped fixture that is installed in the center below the heavy object and abuts against a part of the installation surface of the heavy object, so that the load of the heavy object is concentrated below the jig. This is what is done. With this configuration, the sheet materials can be connected simply by overlapping their ends. Also, the weight of a heavy object is applied to the waterproof material. In addition, the weight of the heavy object is concentrated below the jig. [Effects of the Invention]

[0022] As explained above, the invention described in claim 1 can be connected simply by overlapping the ends of the sheet materials, making it possible to easily expand the installation range of heavy objects while preventing water from seeping in through the connecting parts. In addition, since the load of the heavy object is concentrated below the jig, the gap between the heavy object and the ground surface is reduced, and water intrusion is more effectively prevented.

[0023] In addition to the effect of the invention of claim 1, the invention of claim 2 allows the weight of a heavy object to be applied to the water-stopping material, thereby further preventing water from seeping in through the connecting portion.

[0024] In addition to the effects of the invention of claim 1 or claim 2, the invention of claim 3 has a three-dimensional structure where the connecting part is folded back, making it difficult for the hook-and-loop fastener to come off and improving the stability of the connecting part. Also, gaps around heavy objects are reduced, making it more effective at preventing water intrusion.

[0025] The invention described in claim 4 has the effect of any of the inventions described in claims 1 to 3, and in addition, it can accommodate complex terrain such as corners where flood prevention measures are required, thereby increasing the flexibility of the installation area.

[0026] In addition to the effects of the invention described in any one of claims 1 to 4, the invention described in claim 5 has the advantage that the load of the heavy object is transmitted more evenly to the contact surface by the sheet material and the second sheet material, thereby reducing the gap between the heavy object and the contact surface and better preventing water penetration. The invention described in claim 6 can be connected by simply overlapping the ends of the sheet materials, making it possible to easily expand the installation range of heavy objects while preventing water from seeping in through the connecting parts. In addition, since the load of the heavy object is concentrated below the jig, the gap between the heavy object and the ground surface is reduced, and water intrusion is more effectively prevented. The invention described in claim 7 allows the sheets to be connected simply by overlapping their ends, making it possible to easily expand the installation range of heavy objects while preventing water from seeping in through the connecting parts. In addition, the weight of the heavy objects is applied to the waterstop material, further preventing water from seeping in through the connecting parts. Furthermore, since the load of the heavy object is concentrated below the jig, the gap between the heavy object and the ground surface is reduced, making it more effective at preventing water intrusion. [Brief explanation of the drawings]

[0028] [Figure 1] 1 is a partially cutaway perspective view of a water stopping structure according to a first embodiment of the present invention. [Figure 2] FIG. 2 is an end view of line II-II shown in FIG. [Figure 3] 2 is a perspective view showing a first step of a method for constructing the water-stopping structure shown in FIG. 1. FIG. [Figure 4] 2 is a perspective view showing a second step of the method for constructing the water-stopping structure shown in FIG. 1. FIG. [Figure 5] FIG. 5 is an end view of the VV line shown in FIG. 4. [Figure 6]2 is a perspective view showing a third step of the method for constructing the water-stopping structure shown in FIG. 1. FIG. [Figure 7] FIG. 2 is a perspective view schematically showing a state in which the water stopping structure shown in FIG. 1 is constructed in an inside corner portion. [Figure 8] FIG. 4 is a perspective view of a water stopping structure according to a second embodiment of the present invention. [Figure 9] 9A and 9B are perspective views showing examples of heavy objects in the water stopping structure shown in FIG. 8, where (1) is a mesh-shaped container, and (2) is a container stacked and connected in two layers. [Figure 10] FIG. 1 is a perspective view showing a conventional water stopping structure. [Figure 11] FIG. 11 is an end view of the XI-XI line shown in FIG. 10 when sandbags are stacked in three layers in a conventional water-stopping structure. DETAILED DESCRIPTION OF THE INVENTION

[0029] FIG. 1 is a perspective view showing a water stopping structure according to a first embodiment of the present invention, with a part cut away, and FIG. 2 is an end view taken along the line II-II shown in FIG.

[0030] Referring to these figures, the waterproof structure 1 is mainly composed of a waterproof first sheet material 2 that is laid down, a second sheet material 3 made of an elastic body that is placed between the first sheet material 2 and the ground surface, and a large sandbag 4 that is a heavy object that is placed above the first sheet material 2. In addition, a hard jig 5 is placed between the first sheet material 2 and the sandbag 4. The first sheet material 2, the second sheet material 3, and the jig 5 extend in a direction (depth direction in the figure) that is perpendicular to the water intrusion direction (left-right direction in the figure) indicated by arrow 10.

[0031] The first sheet material 2 is made of waterproof resin and is foldable, in the form of a rectangular sheet extending in a direction perpendicular to the inundation direction. A portion of it is laid in the area where the sandbags 4 will be installed, and the portion on the inundation side (the right side in the figure) is folded upward to cover part of the side surface 6 and top surface 7 of the sandbags 4. This allows the load of the sandbags 4 to be applied more evenly downward, regardless of whether the corners of the sandbags 4 are rounded or the surface is uneven.

[0032] Furthermore, sandbags 8a and 8b, which are smaller than sandbag 4, are connected to the folded end 9 of the first sheet material 2 and hung on the opposite side from the side surface 6. This prevents the first sheet material 2 from sagging regardless of the height of the sandbag 4. It can also absorb expansion and contraction of the first sheet material 2 due to temperature and other factors. Furthermore, by constantly applying tension to the first sheet material 2, it can be made to conform to the sandbag 4, making it possible to suppress wind blowing in.

[0033] Furthermore, the second sheet material 3 is made of an elastic material such as sponge rubber, and can adhere to the uneven ground surface even when the weight of the sandbags 4 is applied. Therefore, the load of the sandbags 4 is transmitted more evenly to the ground surface by the first sheet material 2 and the second sheet material 3, reducing the gap between the sandbags 4 and the ground surface and preventing water seepage.

[0034] Furthermore, the jig 5 is plate- or rod-shaped and extends in the same direction as the first sheet material 2, and because it is hard, it will not lose its shape due to the weight of the sandbag 4 and can efficiently concentrate stress downward. By installing the jig 5 across the bottom of the sandbag 4 from one end to the other in this way, the load of the sandbag 4 is concentrated below the jig 5, reducing the gap between the sandbag 4 and the ground surface and better preventing water seepage.

[0035] Next, a method for constructing the water-stopping structure 1 will be described.

[0036] FIG. 3 is a perspective view showing a first step of the method for constructing the water-stopping structure shown in FIG.

[0037] Referring to the figure, first, the second sheet material 3 is laid on the ground surface 11 in the area where water penetration is to be prevented. Next, the first sheet materials 2a and 2b are laid above the second sheet material 3. At this time, the first sheet materials 2a and 2b are installed so that one end of each of the first sheet materials 2a and 2b in the water penetration direction protrudes further than the end of the second sheet material 3 in the same direction. The first sheet materials 2a and 2b are connected in the longitudinal direction via a connecting portion 16. The manner in which the first sheet materials 2a and 2b are connected will be described in detail later. Then, a jig 5 is installed above the first sheet materials 2a and 2b.

[0038] Furthermore, on the upper surfaces of the first sheet materials 2a and 2b, installation markers 14a to 14d for guiding the installation locations of the sandbags 4 (shown in FIG. 1) are provided at predetermined intervals in the longitudinal direction.

[0039] Next, FIG. 4 is a perspective view showing a second step of the method for constructing the water stopping structure shown in FIG.

[0040] Referring to the same figure, multiple sandbags 4a to 4d are installed in a position guided by the installation signs 14a to 14d shown in Figure 3 and above the second sheet material 3, lined up in a direction perpendicular to the flooding direction.

[0041] At this time, the jig 5 is positioned below the sandbags 4a to 4d. Therefore, the jig 5 transmits the load of the sandbags 4a to 4d to the ground surface 11 even between adjacent sandbags 4a to 4d, reducing the gaps between adjacent sandbags 4a to 4d and further preventing water intrusion.

[0042] Here, the connecting portion of the first sheet materials 2a and 2b will be described.

[0043] FIG. 5 is an end view of the VV line shown in FIG.

[0044] Referring to the figure, at connecting portion 16, two hook-and-loop fasteners 18a, 18b extending in the short direction are provided below longitudinal end portion 17a of first sheet material 2a, spaced apart in the long direction by a distance D. Two hook-and-loop fasteners 18c, 18d are also provided above longitudinal end portion 17b of second sheet material 2b in a similar positional relationship. Furthermore, a waterproof material 19 extending in the short direction and made of an elastic material such as sponge rubber is provided at the distance D between the two hook-and-loop fasteners 18a, 18b.

[0045] By configuring it in this manner, the hook-and-loop fasteners 18a to 18d can be engaged and connected by simply overlapping the longitudinal ends 17a and 17b of the first sheet materials 2a and 2b, respectively, making it possible to easily expand the installation range of the sandbags 4 while preventing water from seeping in through the connecting portions 16.

[0046] 4, sandbags 4c are placed above the waterstop material 19 at the connecting portion 16. This places the weight of the sandbags 4c on the waterstop material 19, improving adhesion and better preventing water from seeping in through the connecting portion 16. This also improves the fixation of the connecting portion 16 itself. Furthermore, when water approaches, the connecting portion 16 is less susceptible to the load (tension) caused by water pressure acting on it; rather, the pressing force caused by the water pressure acts on the waterstop material 19 at the connecting portion 16, effectively preventing water from seeping in.

[0047] In conventional water-stopping structures, when multiple sheet materials are used, the ends of the sheets are often simply overlapped, which causes water leakage. However, in the present invention, the connecting portion 16 is configured as described above so that the water-stopping material 19 is sandwiched between two hook-and-loop fasteners 18, thereby improving water-stopping performance. Furthermore, when the first sheet materials 2a, 2b are folded upward, the hook-and-loop fasteners 18a to 18d and the water-stopping material 19 are made flexible, so that the connecting portion 16 is folded back to form a three-dimensional structure, making the hook-and-loop fasteners 18a to 18d less likely to peel off and improving the stability of the connecting portion 16. Furthermore, when the connecting portion 16 is pressed against the sandbag 4, the force sandwiching the water-stopping material is increased, thereby better preventing water seepage.

[0048] Furthermore, the longitudinal end 17a of the first sheet material 2a and the longitudinal end 17b of the first sheet material 2b are more firmly fixed together by tying them with strings 20 that are provided on each of them in advance.

[0049] Next, the short-side ends of the first sheet materials 2a and 2b are folded upward from the state shown in FIG. 3, thereby proceeding to the third step of the construction method.

[0050] FIG. 6 is a perspective view showing a third step of the method for constructing the water-stopping structure shown in FIG.

[0051] Referring to the same figure, the first sheet materials 2a, 2b that have been folded upward are further folded back along the side surfaces 6 and top surfaces 7 of the sandbags 4a to 4d. Because the longitudinal length of the first sheet materials 2a, 2b spans multiple sandbags 4a to 4c, the side surfaces 6 of adjacent sandbags 4a, 4b and the gaps between them are covered by the first sheet materials 2a, 2b.

[0052] Therefore, since the lower part of the water-stopping structure 1 is covered with the first sheet materials 2a, 2b, the gap between the adjacent sandbags 4a, 4b is reduced, and water intrusion is further prevented.

[0053] In the water-stopping structure 1 constructed in this manner, the gaps between adjacent sandbags 4a, 4b and the gaps between the sandbags 4 and the ground surface 11 are reduced by the first sheet material 2 and the second sheet material 3, thereby preventing water from entering.

[0054] Furthermore, even if an unskilled person arranges the sandbags 4 in a relatively disorderly manner, the configuration in which the first sheet material 2 is folded upward can ensure stable water-stopping performance.

[0055] If necessary, small sandbags 8 may be provided at the ends of the first sheet materials 2a and 2b in the shorter direction as shown in FIG.

[0056] FIG. 7 is a perspective view that schematically shows a state in which the water stopping structure shown in FIG. 1 is constructed in an inside corner portion.

[0057] Referring to the same figure, in an inside corner 21 where the flood prevention area is not linear, a unit for the inside corner can be created by connecting a first sheet material 22a to another first sheet material 22b so that it intersects with it, and can be aligned along the installation area.

[0058] Furthermore, by placing sandbags 24 on the intersections of the first sheet materials 22a and 22b, the connection between the first sheet materials 22a and 22b can be strengthened.

[0059] Next, FIG. 8 is a perspective view of a water stopping structure according to a second embodiment of the present invention.

[0060] The basic structure of this water stopping structure 31 is similar to that of the water stopping structure 1 according to the first embodiment described above, and therefore differences will be mainly described.

[0061] Referring to the figure, in the water stopping structure 31, the heavy object 34 is composed of a container 36 having a rectangular parallelepiped outer edge and a bag 37 that is housed in the container 36 and can be filled with water 39. After the heavy object 34 is installed in the flood prevention area, water is poured into the bag 37, which brings the heavy object 34 into the installed state shown in the figure.

[0062] Since the outer edge of the container 36 is rectangular, multiple heavy objects 34 can be placed without gaps, reducing gaps around the heavy objects 34 and further preventing water intrusion.

[0063] In addition, legs 38a to 38d for supporting the weight of the heavy object 34 are provided at the four corners of the bottom surface of the container 36, and a jig 35a for placing the legs 38a and 38b and a jig 35b for placing the legs 38c and 38d are installed on the first sheet material 32.

[0064] By configuring it in this manner, the load of the heavy object 34 is transmitted more evenly to the contact surface 11 by the first sheet material 32 and the second sheet material 33, reducing the gap between the heavy object 34 and the contact surface 11 and preventing water intrusion.

[0065] Furthermore, the jigs 35a and 35b concentrate the load of the heavy load 34 below the jigs 35a and 35b, thereby reducing the gap between the heavy load 34 and the ground surface 11, and further preventing water intrusion.

[0066] When sandbags are used as heavy objects, it can be difficult to procure the sandbags themselves, the soil to fill them with, and the heavy machinery to install the sandbags. However, with the second embodiment of the present invention, water is relatively easy to obtain and transportation is often not necessary, making it easy to construct a water-stopping structure.

[0067] Next, Figure 9 is an oblique view showing an example of a heavy object in the water-stopping structure shown in Figure 8, where (1) is a mesh-shaped container and (2) is a container stacked and connected in two layers.

[0068] First, referring to (1) in the figure, the heavy object 44 is a mesh-like container 46 such as a foldable and disassembled iron cage, framed pallet, or container box. By configuring the container as a mesh in this way, the mesh portion of the container 46 can be closed with a bag 47 filled with water, allowing for more stable installation. Furthermore, by configuring the container to be foldable, the container can be transported in a folded state and easily assembled on site, thereby saving storage space.

[0069] The bag body 47 has its upper end 48 folded back and secured to the container 46 .

[0070] Next, referring to (2) in the same figure, the heavy load 54 is configured by stacking water-filled containers 56a and 56b in two tiers, one above the other, and the containers 56a and 56b are connected by a connecting member 57 that fixes their relative positions. In addition, a support member extends from the upper container 56b to the ground surface and maintains the posture of the heavy load 54.

[0071] Conventional waterbags cannot maintain their shape, making them difficult to stack and ensuring a watertight height. Furthermore, conventional sandbags must be stacked in a pyramidal shape to ensure a stable watertight height, which requires a great deal of space and cost. Heavy object 54 efficiently ensures a watertight height by stably stacking containers 56a and 56b in two layers.

[0072] In the above embodiments, a waterproof structure constructed on a flat ground surface has been exemplified, but it may also be constructed at the front of a facility, such as at the entrance to a garage or underground space.

[0073] In the first embodiment, the heavy objects are sandbags filled with earth and sand, but they may be filled with water or water-absorbent polymers. The size, shape, and number of the heavy objects can be changed as needed.

[0074] Furthermore, in each of the above embodiments, the first sheet material is a thin rectangular sheet, but the material, shape, thickness, etc. are not important as long as it is water-resistant. Also, for example, a foldable accordion-shaped panel that can be unfolded when in use is also included in the rectangular sheet.

[0075] Furthermore, in each of the above embodiments, a heavy object installation mark is provided on the upper surface of the first sheet material, but this does not have to be the case. Also, if an installation mark is provided, it may be further provided to guide the installation location of the jig.

[0076] Furthermore, in each of the above embodiments, the second sheet material is an elastic body made of sponge rubber or the like, but the material, shape, thickness, etc. are not important as long as it is an elastic body that can reduce unevenness of the ground contact surface. Also, another second sheet material may be provided above the first sheet material.

[0077] Furthermore, in each of the above-described embodiments, the first sheet material is laid on the ground surface and then folded back upward, but it is sufficient that it is at least laid on the ground surface.

[0078] Furthermore, in each of the above embodiments, the first sheet material folded upward covers part of the side and top surface of the heavy object, but it is sufficient if it covers at least part of the side. Furthermore, the side of the heavy object that is covered may be on the side facing the water intrusion direction or on the opposite side.

[0079] Furthermore, in each of the above-described embodiments, the first sheet material may have an excess portion on which instructions on how to construct or use the waterproof structure may be displayed.

[0080] Furthermore, in each of the above embodiments, the first sheet material was linear (rectangular), but if the water ingress prevention area is not linear, the first sheet material and accompanying components may be installed along this area, and cut in the short direction and folded, or may be folded without cutting.

[0081] Furthermore, in each of the above embodiments, the longitudinal length of the jig is a length that extends from one end to the other end of the first sheet material, but it is sufficient that the length extends from one end to the other end of at least one heavy object. Furthermore, if the purpose is to reduce gaps between adjacent heavy objects, it is sufficient that the length extends to multiple desired heavy objects. Furthermore, the jig may be divided to conform to unevenness and have the above-mentioned length when installed. In the case of flood prevention measures for the frontage of a building, the jig may be L-shaped so as to hold down the floor and side walls.

[0082] Furthermore, in each of the above embodiments, the waterproofing material is an elastic body made of sponge rubber or the like, but the material, shape, thickness, etc. are not important as long as it can be deformed by pressure and conform to unevenness.

[0083] Furthermore, in the first embodiment, small sandbags are connected to the folded end of the first sheet material, but any other weight may be used. Furthermore, without using such weights, the sandbags may be directly secured by driving stakes into them.

[0084] Furthermore, in each of the above-mentioned embodiments, in the short direction of the first sheet material, watertightness of the end can be ensured by wrapping a belt provided at the end of the first sheet material around the sandbag, or by installing a belt in advance in the short direction on the underside of the first sheet material of the sandbag at the short end and wrapping the first sheet around the sandbag.

[0085] Furthermore, in each of the above embodiments, the sheet materials are tied together with strings, but strings may be omitted.

[0086] Furthermore, in each of the above embodiments, the two hook-and-loop fasteners each extend in the short direction of the first sheet material, but they may be arranged in other forms as long as they are spaced apart in the longitudinal direction.

[0087] Furthermore, in the above-described embodiments, a hook-and-loop fastener is used to connect the sheet materials together, but other fastening means that can fix the relative positions of the sheet materials may be used. For example, in addition to mechanical fastening using heat welding, adhesives, or metal fittings, methods of tying the sheet materials together with strings or belts, or methods of providing through-holes at the ends of the sheet materials and aligning the through-holes and driving in fixing stakes, etc., are possible.

[0088] Furthermore, in each of the above embodiments, the first sheet material, the second sheet material, and the jig are each installed individually, but any of them may be integrated together.

[0089] Furthermore, in the above embodiments, the heavy objects are arranged in a direction perpendicular to the direction of flooding, but as a countermeasure against water pressure, they may be arranged in the direction of flooding. Also, the heavy objects may be fixed to the ground surface.

[0090] Furthermore, in each of the above-described embodiments, when constructing the waterproof structure, scaffolding materials, lumber, etc. may be assembled on-site. Also, these may be combined with heavy objects.

[0091] Furthermore, in each of the above-described embodiments, a buffer material may be provided in front of the water-stopping structure in the direction of water intrusion, taking into consideration the collision of drifting objects.

[0092] Furthermore, in the second embodiment, the container is filled with water, but the present invention can be applied to any fluid that can be filled into a container, in substantially the same way as water. That is, sand, stone, metal, etc. can also be used, and they can be mixed in to adjust the specific gravity.

[0093] Furthermore, in the second embodiment, the container is preferably made of steel, resin, wood, waterproofed paper, or a composite material thereof, taking into consideration damage to the bag body due to collision with drifting objects. Also, if the container is mesh-shaped, the size of the mesh can be determined taking into consideration damage to the bag body due to protrusions from drifting objects.

[0094] Furthermore, in the second embodiment, the containers have a rectangular parallelepiped outer edge, but other outer edge shapes are also acceptable as long as they can be installed in close contact with each other. That is, any three-dimensional shape that fills the space in the installation area so that adjacent containers can be placed closely together without gaps is acceptable, such as a triangular prism, a regular hexagon, or a triangular pyramid. Alternatively, the containers may be cylindrical or semi-cylindrical.

[0095] Furthermore, in the second embodiment, the bag may be made of an elastic material such as rubber or resin, or may be a composite of these with a reinforcing material such as metal or synthetic fiber. The bag may be configured to stand on its own without a container or the like and function as a water storage container. The bag may also be permanently attached to a container or the like. The bag may also have a top plate with an inlet to prevent foreign matter from getting in. A discharge outlet may also be provided at the bottom.

[0096] Furthermore, in the second embodiment described above, the bags of adjacent heavy objects may be connected by a hose or the like, so that when water is poured into one bag, the connected bags also collect water. Also, when containers are used stacked one on top of the other, the lower bag may be made to have a sealed structure and connected to the upper bag by a hose or the like, so that water can be poured into the lower bag as well. Furthermore, as described above, adjacent bags may be connected by a hose or the like.

[0097] Furthermore, in the second embodiment, the heavy object in which the bag body is placed in the container may be used not only as a water cut-off dam, but also as emergency water for daily life, a fish tank, a simple or emergency water storage container, etc.

[0098] Furthermore, in the second embodiment, the containers are stacked in two layers, one above the other, but they may be stacked in more layers. Also, adjacent containers may be further connected to prevent them from falling over. [Explanation of symbols]

[0099] 1, 31...Water-stopping structure 2, 22, 32...First sheet material 3...Second sheet material 4, 8, 24...sandbags 5, 35...jig 6...Side 11…Ground surface 14…Installation sign 16...Connection part 17...Longitudinal end 18...Velcro 19...Waterproof material 34, 44, 54…heavy items 36, 46, 56…container 37, 47...Bag body In addition, the same reference numerals in each drawing indicate the same or corresponding parts.

Claims

1. A water-stopping structure that prevents water from entering due to a heavy object, a rectangular waterproof sheet material extending in a direction perpendicular to the flooding direction in an installed state; A plurality of the heavy objects are arranged in a direction perpendicular to the water intrusion direction and installed above the sheet material; a hard jig that is installed between the sheet material and the plurality of heavy objects and extends in a direction perpendicular to the water immersion direction; Two connecting portions are provided at longitudinal end portions of the sheet material with a gap in the longitudinal direction, the connecting portions including fixing means for fixing the relative positions of the two sheet materials and a water-stopping material made of an elastic body provided between the two fixing means, The jig is a rod-shaped tool that is installed at the center below the heavy object and abuts against a part of the installation surface of the heavy object. A water-stopping structure in which the load of the heavy object is concentrated below the jig.

2. The water-stopping structure according to claim 1 , wherein the heavy object is placed above the water-stopping material at the connecting portion.

3. the fastening means is a hook-and-loop fastener extending in the short-side direction of the sheet material, the hook-and-loop fastener and the water-stopping material are flexible, The sheet material has a lateral end portion including the hook-and-loop fastener and the water-stopping material folded upward, 3. The waterproof structure according to claim 1, wherein at least a portion of a side surface of the heavy object is covered with the sheet material.

4. The water stopping structure according to claim 1 , wherein the sheet material is connected to other sheet materials that intersect with each other along the installation area.

5. The waterproof structure according to claim 1 , further comprising a second sheet material made of an elastic material and placed between the sheet material and a ground surface.

6. A water-stopping structure that prevents water from entering due to a heavy object, a rectangular waterproof sheet material extending in a direction perpendicular to the flooding direction in an installed state; A plurality of the heavy objects are arranged in a direction perpendicular to the water intrusion direction and installed above the sheet material; a hard jig that is installed between the sheet material and the plurality of heavy objects and extends in a direction perpendicular to the water immersion direction; Two connecting portions are provided at longitudinal end portions of the sheet material with a gap in the longitudinal direction, the connecting portions including fixing means for fixing the relative positions of the two sheet materials and a water-stopping material made of an elastic body provided between the two fixing means, the sheet material is folded upward so that the short-side end portion covers at least a part of the side and top surfaces of the plurality of heavy objects; A weight is connected to the folded end of the sheet material and hung on the opposite side from the side surface, The jig is a rod-shaped tool that is installed at the center below the heavy object and abuts against a part of the installation surface of the heavy object. A water-stopping structure in which the load of the heavy object is concentrated below the jig.

7. A water-stopping structure that prevents water from entering due to a heavy object, a rectangular waterproof sheet material extending in a direction perpendicular to the flooding direction in an installed state; A plurality of the heavy objects are arranged in a direction perpendicular to the water intrusion direction and installed above the sheet material; a hard jig that is installed between the sheet material and the plurality of heavy objects and extends in a direction perpendicular to the water immersion direction; Two fixing means are provided at longitudinal end portions of the sheet material at intervals in the longitudinal direction, fixing the relative positions of the two sheet materials to each other, and a connecting portion is provided between the two fixing means and including a waterproof material (excluding adhesives and pressure-sensitive adhesives) made of an elastic body, The heavy object is installed above the water-stopping material at the connecting portion, The jig is a rod-shaped tool that is installed at the center below the heavy object and abuts against a part of the installation surface of the heavy object. A water-stopping structure in which the load of the heavy object is concentrated below the jig.

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