Waterproof device, expansion member, and method for forming waterproof wall

Abstract

Provided is a method for forming a waterproof wall by means of an attachable / detachable waterproof device (1) that prevents flooding of a river or an irrigation canal (C) or prevents inundation of a site, wherein: an expansion member (10) stored by being wound in the longitudinal direction is carried to a flooding or inundation risk location; the expansion member (10) is spread on the ground surface or a road surface so that a base end part (11) of the expansion member (10[GW1.1]) is beside attachment parts (2) of a fence (F) or the like; the attachment parts (2) and the base end part (11) are hooked and fastened by connectors (3) such as hooks; and the expansion member (10) is filled with rainwater pumped up by a pump (21) from the river or the irrigation canal (C) or a catch basin or with water from a fire hydrant, through a hose (20) connected to a water supply / discharge port (14) of the expansion member (10) to form a temporary waterproof wall.

Description

Waterproof device, expansion member, and method for forming a waterproof wall

[0001] The present invention relates to a waterproof device, an expansion member, and a method for forming a waterproof wall.

[0002] Although water area management initiatives centered on specific urban rivers are being promoted by national and local governments, conventional measures such as raising river embankments require an enormous amount of time and cost and can only be carried out on rivers with a relatively high risk.

[0003] On the other hand, due to abnormal weather caused by global warming, floods occur every year somewhere due to the occurrence of a linear precipitation band, and it is not surprising that floods occur in rivers and water channels across the country. In particular, in small-scale rivers and water channels flowing through residential areas across the country, there are too many target locations and no effective flood countermeasures have been proposed, so almost no flood countermeasures can be taken and urgent flood countermeasures are required.

[0004] Conventionally, for example, as in Patent Document 1, a rubber dam used to temporarily block the water in a river is attached to the river embankment and used as a waterproof wall in case of flood danger. Such a rubber dam type waterproof wall is basically of a permanent installation type. The reason is that in order to prevent air leakage in the bag and water leakage from the river to the embankment side, sealing fixation is required over the entire length of the waterproof wall, and it is necessary to sandwich an expansion member (bag) between the pressing member and the receiving member at all fixing points over the entire length and tighten the fastening nut with a predetermined tightening torque, so a large amount of labor is required for installation.

[0005] Also, for example, as in Patent Document 2, there are those that connect a pair of flexible bag bodies and can be used without being fixed to the ground.

[0006] Japanese Patent No. 7387947, Japanese Unexamined Patent Application Publication No. 10-8433

[0007] However, in the case of those like Patent Document 1, since there is a road passing by the side of a small-scale river in a residential area and automobiles come and go, such an attachment structure that requires a large amount of labor for attachment is premised on permanent installation and cannot be used as a simple waterproof device in an emergency.

[0008] Furthermore, while the method described in Patent Document 2 requires minimal installation effort and prevents the bag from rolling, problems arise when the current is fast and the bag is subjected to high water pressure, such as water leakage from between the ground and the bag, or the bag sliding sideways due to water pressure. Moreover, if the river water contains driftwood, there is a risk that the driftwood will collide with the bag, causing it to slide sideways and damaging the waterproof wall.

[0009] Many small rivers and irrigation canals flowing through residential areas do not have high embankments like large rivers, and roads are built right next to them. One flood control measure for these small rivers and canals is to construct concrete or steel waterproof walls at the boundary between the river and the road. However, this is a large-scale civil engineering project, and because it involves many locations and is therefore very costly and time-consuming, as well as detracting from the landscape of residential areas, it is rarely done.

[0010] On the other hand, a conventional technique for creating temporary waterproof walls in emergencies has long involved stacking sandbags. However, even in small rivers, heavy rainfall can cause significant water flow during floods, making it difficult to prevent flooding with loosely stacked sandbags. Furthermore, transporting sandbags from storage and stacking them one by one requires considerable manpower and time, which is another problem.

[0011] To address the instability and installation difficulties associated with the random stacking of multiple sandbags mentioned above, a method has been proposed in which long bags are inflated with air or water to create a waterproof wall.

[0012] However, while waterproof walls using these bags have been put into practical use to prevent water from seeping in through building entrance doors as an alternative to sandbags, they have many problems as waterproofing devices for rivers or irrigation canals and are not widely used at present.

[0013] This invention has been made in view of the above points, and its purpose is to solve the problems of the conventional technology of simple waterproof walls using bag-type structures and to provide a practical configuration for waterproofing small rivers in residential areas.

[0014] To achieve the above objective, the first invention relates to a long, bag-type waterproofing device that can be attached and detached to prevent flooding of rivers or irrigation canals or inundation of a site, the waterproofing device having: multiple attachment points installed at intervals on the ground on the side of the incoming water; an expandable member connected directly to the attachment points or via connectors and portable in a foldable state; a hose for filling the expandable member with water; and a pump to which the hose is connected for drawing up water, the expandable member having: a base end to prevent rolling; an expandable part continuous with the base end that expands when filled with water; and at least one water inlet / outlet that passes through the inside of the expandable part and is connected to the hose, the base end has multiple connection points at intervals that can be connected to the attachment points or connectors, and in a temporary installation state before filling with water, with the expandable member connected to the attachment points, the expandable member is flat and can be walked over by people or vehicles. When the expansion section is filled with water and the installation is complete, the expansion section expands to have a roughly circular or elliptical cross-section, and at the same time the base end protrudes from the expansion section. When B is the height from the ground at the mounting section connection point where the mounting section is directly or indirectly connected to the base end, the length C (length of the mooring member) from the base end root position where the base end is connected to the expansion section to the mounting section connection point satisfies the relationship 0.02A ≤ C < (A / π) - 3B.

[0015] The second invention relates to an expandable member used in a long, bag-type waterproofing device that can be attached and detached to prevent flooding of rivers or irrigation canals or inundation of a site, wherein the expandable member has a base end that prevents rolling, an expandable section continuous with the base end that expands when filled with water, and at least one water inlet / outlet port that is connected to the inside of the expandable section and can be connected to a hose, the base end has multiple connection parts that can be connected to an attachment part or connector at intervals, the inner wall of the expandable section is a watertight bag-shaped inner wall, in a temporary installation state before filling the expandable section with water, in a completed installation state after filling the expandable section with water, the expandable section expands into a roughly circular or elliptical shape, and at the same time the base end protrudes from the expandable section, and when the inner circumference length of the expandable section that expands when filled with water is A, the length D from the base position of the base end where the base end is connected to the expandable section to the tip of the base end is The relationship is 0.02A ≤ D < A / π.

[0016] The third invention relates to a method for forming a waterproof wall using a long, retractable, water-bag-type waterproofing device that prevents flooding of rivers or irrigation canals or inundation of a site. In this method for forming a waterproof wall, an expandable member, stored rolled up in the lengthwise direction, is transported to a flood- or inundation-prone area. The expandable member is spread out on the ground or road surface next to an attachment point such as a fence, with the base end facing the attachment point. The attachment point and the base end are fastened together with a connector such as a hook. Rainwater pumped from a river, irrigation canal, or drainage basin, or water from a fire hydrant is then filled into the expandable member via a hose connected to the water inlet of the expandable member, thereby forming a temporary waterproof wall.

[0017] The fourth invention relates to a method for forming a waterproof wall using a long, retractable, water-bag-type waterproofing device that prevents flooding of rivers or irrigation canals or inundation of a site, and the method for forming the waterproof wall is as follows: In the first step, an expandable member stored rolled up in the length direction is carried to a flood or inundation risk area, spread out on the ground or road surface next to an attachment point such as a fence, with the base end of the expandable member facing the attachment point, fasten the attachment point and the base end with a connector such as a hook, lay the expandable member flat on the road surface, and temporarily install the waterproofing device so that people and vehicles can pass over the expandable member. If the installation does not cross a road with a bridge, the expandable member is lifted and leaned against or placed on a fence to temporarily install the waterproofing device so that people and vehicles can pass over it. In the second step, rainwater pumped from a river, irrigation canal, or drainage basin, or water from a fire hydrant is filled into the expandable member via a hose connected to the water inlet of the expandable member, and the installation of the waterproofing device is completed.

[0018] As described above, the present invention provides a practical configuration for waterproofing small rivers or irrigation canals located in residential areas.

[0019] This is a perspective view showing a temporary installation state of a waterproofing device according to an embodiment of the present invention. This is a perspective view showing a completed installation state of a waterproofing device according to an embodiment of the present invention. This is a cross-sectional view showing the moment of force generated when a conventional mooring member for preventing the bag from rolling is used. This is a cross-sectional view showing the moment of force generated when another conventional mooring member for preventing the bag from rolling is used. This is a cross-sectional view showing a first example of constraint conditions for the length of the mooring member. This is a cross-sectional view showing a second example of constraint conditions for the length of the mooring member. This is a cross-sectional view showing a third example of constraint conditions for the length of the mooring member. This is a cross-sectional view showing the change in position due to the installation state when the mooring member is loosened before water intrusion. This is a cross-sectional view showing the change in position due to the installation state when the mooring member is taut at the maximum water level. This is a cross-sectional view showing the moment of force generated by the mooring member according to an embodiment of the present invention. This is a cross-sectional view showing the moment of force generated by the mooring sheet when the base of the mooring sheet and the bag are at ground level, according to the conventional technology. This is a perspective view showing an expansion member in an example of connection between the base end and the attachment part without a connector. This is a perspective view showing the attachment part and its surroundings in an example of connection between the base end and the attachment part without a connector. This is a perspective view showing the connection state in an example of connection between the base end and the mounting part when no connector is used. This is a perspective view showing a first modified example of the mounting part. This is a perspective view showing a second modified example of the mounting part. This is a perspective view showing a third modified example of the mounting part. This is a perspective view showing an installation configuration for a fourth modified example of the mounting part by embedding a single unit. This is a perspective view showing an installation configuration for a fifth modified example of the mounting part by bolting together multiple plates. This is a perspective view showing a first example of a connector between the base end and the mounting part when the connector is a single hook. This is a perspective view showing a second example of a connector between the base end and the mounting part when the connector is a single hook and rope. This is a perspective view showing a third example of a connector between the base end and the mounting part when the connector is a two-hook and rope. This is a perspective view showing a fourth example of a connector between the base end and the mounting part when an L-shaped mounting part and a rope are connected. This is a perspective view showing a fifth example of a connector between the base end and the mounting part when an L-shaped mounting part and a fastening ring are connected. This is an exploded perspective view showing a one-touch fastening component. This is a perspective view showing an example of connection between the base end and the mounting part using a one-touch fastening component. This is a perspective view showing the case where the mounting part is a support column and a restricting part.This is a perspective view showing the normal state when the mounting part is a support column with a bollard structure. This is a perspective view showing the temporary installation state when the mounting part is a support column with a bollard structure. This is a perspective view showing the first example of a mounting part that does not protrude from the ground. This is a perspective view showing the second example of a mounting part that does not protrude from the ground. This is a perspective view showing the third example of a mounting part that does not protrude from the ground. This is a perspective view showing the normal state of a mounting part that is normally embedded in the ground. This is a perspective view showing the temporary installation state of a mounting part that is normally embedded in the ground. This is a perspective view showing an expansion member in another example of connection between the base end and the mounting part without a connecting part. This is a perspective view showing the mounting part and its surroundings in another example of connection between the base end and the mounting part without a connecting part. This is a perspective view showing the connected state in another example of connection between the base end and the mounting part without a connecting part. This is a perspective view showing an example of a mounting part in a guardrail including a protective part. This is a perspective view showing an example of a mounting part in a fence including a protective part. This is a perspective view showing the additional installation state of a restricting part in a fence. This is a cross-sectional view showing the state in which the protective part of the fence and the expansion member are in contact. This is a perspective view showing a cross-section of the expansion member. This is a cross-sectional view showing a first modified example of an expansion member in which one layer of reinforcing fabric is provided inside the expansion section. This is a cross-sectional view showing a second modified example of an expansion member in which two layers of reinforcing fabric are provided inside the expansion section. This is a cross-sectional view showing a third modified example of an expansion member in which reinforcing fabric is provided from the expansion section to the base section. This is a cross-sectional view showing a fourth modified example of an expansion member in which a common reinforcing fabric is provided inside the expansion section and at the base end. This is a cross-sectional view showing a flat state of a fifth modified example of an expansion member having an outer circumference length exceeding twice the width of the expansion section. This is a cross-sectional view showing a water-filled state of a fifth modified example of an expansion member having an outer circumference length exceeding twice the width of the expansion section.

[0020] Embodiments of the present invention will be described below with reference to the drawings.

[0021] -Configuration of the waterproofing device- Figure 1A shows the temporary installation state of the waterproofing device 1 according to an embodiment of the present invention, and Figure 1B shows the completed installation state (at the assumed maximum water level). This waterproofing device 1 is a simple waterproofing device of the long bag type that can be easily attached and detached, and prevents flooding of rivers or irrigation canals C or inundation of the site due to sudden heavy rain.

[0022] The waterproofing device 1 of this embodiment is installed along a river (in this embodiment, an irrigation channel C) over which a bridge P that can be used by vehicles and people is located. A fence F is also erected along the irrigation channel C. As shown in the figure, this fence F may also be continuously provided on both sides of the bridge P.

[0023] The waterproofing device 1 is equipped with mounting parts 2 that are pre-installed at intervals on the ground on the water-facing side. A portable, foldable inflatable member 10 is connected to these mounting parts 2 either directly or via a connector 3. The inflatable member 10 has a base end 11 provided to prevent rolling and an inflatable part 12 that is continuous with the base end 11 and expands when filled with water.

[0024] The waterproofing device 1 also includes a hose 20 for filling the expansion section 12 with water, and a pump 21 connected to the hose 20 to draw up the water. In the case of filling with water from a fire hydrant or the like (not shown), the hose 20 and pump 21 can be existing ones connected to the inside of the expansion section 12 and used.

[0025] As will be explained in more detail later, as illustrated in Figure 7A, the base end portion 11 is provided with multiple connection portions 13 at intervals, each consisting of a through hole that can be connected to the mounting portion 2 or the connector 3.

[0026] Furthermore, the expansion section 12 is provided with at least one water supply / drainage port 14 (shown only in Figures 1A and 1B) that connects to the inside of the expansion section and is connected to the hose 20. The water supply / drainage port 14 may serve both purposes, or separate ports may be provided for each.

[0027] The water inlet / outlet 14 is connected to the pump 21 and the water intake (not shown) via a hose 20. Typically, installation is required in locations without a nearby power source, so the pump 21 is either an engine pump or a submersible pump 21 and generator (neither of which are shown).

[0028] Although not shown in the diagram, a vacuum pump or the like may be prepared to forcibly drain the water from the expansion member 10 in order to expedite the removal of the waterproofing device 1.

[0029] As shown in Figure 1A, in the temporary installation state of the waterproofing device 1 (before filling with water) with the expansion member 10 connected to the mounting part 2, the expansion member 10 is in the shape of a flat plate over which people and vehicles can pass.

[0030] On the other hand, as shown in Figure 1B, when the waterproofing device 1 is installed and filled with water W0 in the expansion section 12, the expansion section 12 swells into a roughly circular or elliptical cross-section, and at the same time, the base end 11 protrudes from the expansion section 12.

[0031] The following describes the features, more specific configuration, and more preferred configuration of the waterproofing device 1 according to this embodiment.

[0032] -Water leakage due to reduced airtightness between the ground and the bag- Next, we will explain one of the problems with conventional waterproofing devices installed in rivers or irrigation canals C, etc.: water leakage due to reduced airtightness between the ground G and the bag 10'.

[0033] First, as shown in Figure 2A, the leakage of water W from the ground G depends on the relationship between the pressing load F1 of the bag 10' against the ground G and the water pressure at the ground G. In the installed state, the pressing load F1 is the weight of the water W0 filled in the bag 10'. The water pressure at the ground G increases in proportion to the water depth.

[0034] Therefore, while leakage is prevented without any problems when the water depth is shallow, when the water level rises and reaches the vicinity of the weir height (the top of the expansion member 10), the water pressure at the ground level G becomes considerably high.

[0035] A major problem at this time is that the intrusion of water W around the bag 10' generates buoyancy in the bag 10', causing the pressing load F1 of the bag 10' against the ground G to gradually decrease, and thus lowering the water pressure limit for stopping water.

[0036] When the water level reaches near the weir height, the pressing load F1 on the ground G decreases to half of what it was under normal conditions, and therefore the water pressure at the limit of water stoppage also decreases by half.

[0037] As the water level rises, the water pressure increases and the pressing load F1 of the bag 10' against the ground G decreases (a decrease in the watertight limit water pressure), which simultaneously reduces the margin of safety against water leakage W.

[0038] Further, due to the rise in the water level, the bag body 10' is subjected to water pressure and tends to roll horizontally. Therefore, it is necessary to provide a mooring member to prevent rolling and horizontal sliding. However, in the case of the prior art, the mooring member has a further adverse effect on leakage from the ground G.

[0039] For example, FIGS. 2A and 2B show the moment of force generated when a mooring member for preventing the rolling of the bag body 10' according to the prior art is used.

[0040] FIG. 2A shows the prior art in which the bag body 10' is pressed by a rope U2 to prevent rolling, and FIG. 2B shows the prior art in which a projecting piece U3 is provided near the center of the bag body 10' and is connected and fixed by an anchor pile U1 and the projecting piece U3.

[0041] In either case, the moment of force can be shown by the "lever principle" (force point, fulcrum, point of action).

[0042] In the case of the waterproof device 1 as in the present embodiment, the force point is the resultant force (total water pressure) of the hydrostatic pressure applied to the wall surface of the bag body 10'. If the cross-section of the bag body 10' is circular, the hydrostatic pressure acts perpendicular to the wall surface, so the direction of the hydrostatic pressure is the center of the circle. Therefore, the total water pressure, which is the resultant force, also acts in the direction of the center of the circle.

[0043] Further, since the hydrostatic pressure increases in proportion to the water depth, the position where the total water pressure, which is the resultant force of the hydrostatic pressure, acts is at a position of 1 / 3h (h / 3) from the ground G when the height of the weir (water depth) is h.

[0044] From the above, as shown in FIG. 2A, the total water pressure, which is the force point, acts in the direction of the center of the circle (bag body 10') at the wall surface position of 1 / 3h from the ground G.

[0045] Next, in the water bag waterproof device using the conventional bag body 10', since the mooring member stops the rolling of the bag body 10', the fulcrum is the connection point (contact point) between the mooring member (rope U2 or projecting piece U3) and the bag body 10'.

[0046] And the point of action in the water bag waterproof device of the bag body 10' is the contact point between the bag body 10' and the ground G.

[0047] As shown in FIGS. 2A and 2B, in any of the prior arts, since the fulcrum point (total water pressure) is at a higher position relative to the fulcrum (mooring connection point), a counterclockwise moment occurs around the fulcrum, and thus the generating force due to the water pressure generated at the point of action (the contact point with the ground G) is in the direction of lifting the bag body 10' upward.

[0048] As described above, the rise in water level causes an increase in water pressure and a decrease in the pressing load F1 of the bag body 10' simultaneously, increasing the risk of water leakage. In addition, in the prior art, the installation of the mooring member for preventing rolling further reduces the pressing load F1, leading to a decrease in the water stop limit water pressure. This was a major cause making it difficult to use the bag water bladder as a simple waterproof device.

[0049] In contrast, in the present embodiment, as shown in FIGS. 3A to 3C, when the inner circumference length of the expansion part 12 filled with water W0 and inflated is A, and the height from the ground G of the attachment part connection position where the base end part 11 of the attachment part 2 is directly or connected via the coupler 3 is B, the length C (mooring member length) from the root position of the base end part 11 where the base end part 11 is connected to the expansion part 12 to the attachment part connection position with the base end part 11 of the attachment part 2 or the coupler 3 satisfies the relationship of 0.02A ≤ C < (A / π) - 3B... (1).

[0050] However, it is assumed that B < A / (3π)... (2).

[0051] Since the attachment part connection position is set at the ground G or a position higher than the ground G, B is usually 0 or more, but this is not a restrictive condition.

[0052] (A / π) in the above formula (1) is approximately the weir height h (water depth). Therefore, as shown in FIG. 3A, the condition shown by formula (2) means that the attachment part connection position with the base end part 11 of the attachment part 2 or the coupler 3 is at least at a position lower than 1 / 3h from the ground G.

[0053] Next, regarding formula (1), as a condition for the root position of the base end part 11 serving as the fulcrum (mooring connection point) to be at a position lower than the force point (1 / 3h), it shows the range of the length from the root position of the base end part 11 where the base end part 11 is connected to the expansion part 12 to the attachment part connection position with the base end part 11 of the attachment part 2 or the coupler 3.

[0054] As shown in Figure 3B, C represents the length of the mooring member, and is greater than 0. However, if the mounting connection position B with the mounting part 2 is close to 1 / 3h in height, it needs to be set to a very short length.

[0055] On the other hand, as shown in Figure 3C, if the mounting connection position B is at 0, i.e., at ground level G, the length can be extended to a maximum of close to (A / π).

[0056] Furthermore, as shown in equation (1), the lower limit of the mooring member length C is 0.02A.

[0057] The principle of levers applies to the point where the full water pressure is applied, the fulcrum which is the mooring point, and the point of application which is the point of contact between the ground G and the expansion member 10. As mentioned above, if the fulcrum is lower than the point of application, an increase in water level will cause a force to press the expansion member 10 against the ground G at the point of application. If the fulcrum is too close to the point of application, the force pressing the expansion member 10 against the ground G will increase, while the tensile load generated at the base end 11, which is the fulcrum, will also increase. If the length C of the mooring member is 0.02A or more, the tensile load on the base end 11 will be less than or equal to twice the full water pressure, and it can be used without problems by ensuring the strength of the base end 11 and the mounting part 2. However, if the length C of the mooring member falls below 0.02A and the fulcrum and point of application are close together, the tensile load on the base end 11 will increase rapidly, so the length C of the mooring member must be 0.02A or more.

[0058] Equation (1) shows the conditions for setting the base position of the base end 11, which serves as the fulcrum (anchoring point), to a position lower than the point of force application (1 / 3h), and within a range where excessive tensile load is not applied to the base end 11.

[0059] As shown in Figure 4A, when the base end 11 of the expansion member 10 is connected to the mounting part 2 and the expansion part 12 is filled with water W0 to expand it, the base end 11 may become loose. However, as shown in Figure 4B, as the water level actually rises and reaches near the weir height, the large water pressure of the incoming water W acts on the expansion member 10 from a diagonal downward direction, generating a large tensile load on the base end 11, causing the base end 11 to protrude almost vertically from the expansion part 12. Therefore, by using the relationship in equation (1), it is possible to ensure that the base position of the base end 11, which acts as a fulcrum (mooring point), is lower than the point of force application (1 / 3h), and that no excessive tensile load is applied to the base end 11.

[0060] The moment of force in this embodiment is shown in Figure 5. As is clear from Figure 5, in this embodiment, by setting the length C (tethering member length) from the base position of the base end 11 where the base end 11 is connected to the expansion part 12 to the base end 11 of the mounting part 2 or the mounting part connection position with the connector 3 to a length within the range of equation (1), it is possible to set the fulcrum (base of the base end 11) at a position lower than the point of force application (total water pressure), and a clockwise moment is generated around the fulcrum, which causes the force generated by the water pressure at the point of application (contact with the ground G) to press the expansion part 12 toward the ground G.

[0061] In this embodiment, the water pressure from the flooding water W is used to increase the pressing load F1 of the expansion section 12 against the ground G, thereby raising the watertight limit water pressure and avoiding the loss of the waterproof wall function due to water leakage, which was the biggest weakness of the long bag waterbag.

[0062] In the case of the conventional technology shown in Figure 6 (where the connection point at the base of the bag body 10' and the mooring (waterproofing) sheet 11' is located on the ground G, and the mooring sheet 11' is configured to be in contact with the outer circumference of the bag body 10'), the fulcrum is located on the ground G, and the fulcrum and the point of application coincide. As a result, an excessive moment is generated at the fulcrum (point of application) due to the total water pressure at the point of force application. Consequently, a shear force is generated at the base of the mooring sheet 11', which is configured to be in contact with the outer circumference of the bag body 10', attempting to pull it away from the bag body 10'. This can lead to damage to the waterproof wall due to the peeling or tearing of the mooring sheet 11'.

[0063] On the other hand, in this embodiment, the base portion 11 protrudes from the expansion portion 12, and the support point is set higher than the ground G (a position greater than 0), so excessive shear force (peeling force) is not generated at the base of the base portion 11, and there is no need to worry about damage to the waterproof wall.

[0064] Furthermore, in this embodiment, since the length of the portion that receives the tensile load due to water pressure from the base of the base end 11 to the mounting portion 2 is set to be greater than 0.02A and less than A / π, the fulcrum can be set at a position lower than the point of force application and higher than the ground G.

[0065] -Connecting means by hook- In this embodiment, a feature is that at least one of the connecting means between the base end portion 11 and the mounting portion 2, or between the base end portion 11 and the connecting portion 13 and the connector 3, or between the connector 3 and the mounting portion 2, or between two or more connecting connectors 3 is a hook.

[0066] Waterproofing device 1, which can be used in sudden heavy rainfall, is required to have short installation time and labor requirements.

[0067] Conventional methods, such as those in which an expansion member (bag body 10') is sandwiched between a pressing member and a receiving member at the mounting part 2 and a fastening nut is tightened with a predetermined tightening torque, or the method shown in Figures 2A and 2B, where an anchor pile U1 is driven into the ground to serve as the mounting part and a mooring member to prevent rolling, such as a rope U2, is attached there, require a large number of people and a considerable amount of time for installation.

[0068] In this embodiment, the mounting portion 2 is installed in advance, and the base end portion 11 (including the connector 3) is attached to it by hooking it in place, so that temporary installation can be done by a small number of people in a short amount of time.

[0069] (Example without using a connector) In this embodiment, as shown in Figure 7A, the connection portion 13 of the base end portion 11 is made up of multiple through holes provided at intervals in the base end portion 11. In this case, the connector 3 does not need to be used. The shape of the mounting portion 2 may be linear, such as an I-shape, as shown in Figure 7B.

[0070] As shown in Figure 7C, in order to prevent the base end 11 from coming off the rod-shaped member of the mounting part 2, the rod-shaped member may be inserted through the connecting part 13 which has a through hole, and then a stopper 13a, such as a pin, may be inserted through the insertion hole 2e of the rod-shaped member.

[0071] (Example using a connector) When using the connector 3, the mounting portion 2 may be key-shaped, such as U-shaped (Figure 8A) or L-shaped (Figure 8B), or ring-shaped, such as O-shaped (Figure 8C). Alternatively, a rod-shaped body with a round or square cross-section may be attached to the base 2b by welding, screwing, etc.

[0072] Furthermore, as shown in Figures 9A and 9B, the multiple mounting parts 2 may be arranged in a line along a road R beside a river or irrigation canal C, or along the boundary of a property. The base 2b of each mounting part 2 may be individually embedded in the asphalt or concrete of the road surface or fastened with bolts 2c, etc., or a plate 2d made of metal or the like on which the multiple mounting parts 2 are arranged may be fastened to or embedded in the road surface.

[0073] Furthermore, as shown in Figure 10A, when using the connector 3, the connector 3 may be fastened by one or more carabiners 3a to the through hole which is the connection part 13 of the base end 11 and the rod-shaped body of the mounting part 2.

[0074] As shown in Figure 10B, the connector 3 may also consist of a hook 3b and a rope 3c that connect the through hole, which is the connection part 13 of the base end 11, to the rod-shaped body of the mounting part 2.

[0075] As shown in Figure 10C, the connector 3 may also consist of two hooks 3b and a rope 3c that connect the through hole, which is the connection part 13 of the base end 11, to the rod-shaped body of the mounting part 2.

[0076] As shown in Figure 10D, the connector 3 may also be composed of a single rope 3c that connects the through hole, which is the connection part 13 of the base end 11, to the L-shaped mounting part 2.

[0077] As shown in Figure 10E, the connector 3 may also use a fastening ring 3d and a chain 3e that connect the through hole which is the connection part 13 of the base end 11 to the L-shaped mounting part 2.

[0078] To connect the base end 11 and the mounting part 2, directly connecting them would require fine-tuning the position of the expansion member 10 while attaching it to the mounting part 2. Fine-tuning the position of the expansion member 10, which is a long and heavy object, is difficult. However, by connecting them via the connector 3, the workability can be improved.

[0079] In this way, by fastening at least one point from the base end 11 to the mounting part 2, the waterproofing device 1 can be temporarily installed by a small number of people in a short amount of time.

[0080] - Modified Version of the Connecting Means - In a modified version of the connecting means of this embodiment, as shown in Figures 11A and 11B, the connecting means between the mounting part 2 and the connector 3 is a one-touch fastening component 103 that can be fastened and unfastened by rotating a handle, knob, or knob.

[0081] In the one-touch fastening component 103, the fastening component body 103a is connected to the connector 3 (rope 3c in Figure 11B), and the fastening component case 102 is installed on the road surface. The fastening component body 103a is provided with a shaft 103b, and the fastening component case 102 is provided with a shaft hole 102a into which the shaft 103b is inserted, and a locking mechanism is provided to fasten the two together. The locking mechanism is preferably one that has a high fastening force and uses at least one of the following: a pin 103c, a ball, a spring 103d, a cam 102b, a wedge, etc., provided on the shaft 103b. For example, the spring 103d is built into the fastening component body 103a, and the knob 103e is rotatable by 90° and configured to move in conjunction with the shaft 103b.

[0082] In this way, by connecting the one-touch fastening component 103 to a connector 3 such as a rope 3c, the waterproofing device 1 can be installed with fewer people and in a shorter amount of time.

[0083] The fastening component case 102 can also be installed on the road surface of bridge P by embedding the base 2b so that it does not protrude from the road surface.

[0084] Although not shown in the diagram, a cover may be provided to prevent soil or other debris from entering the fastening component case 102 installed on the road surface.

[0085] - Modification of the mounting portion - As shown in Figure 12, the mounting portion 202 may be a support column that protrudes from the ground G or road surface and is provided with an enlarged disc-shaped upward restricting portion 202a.

[0086] By making the mounting portion 202 a support column that protrudes from the ground G, a simple yet strong mounting portion 202 is created, making it easy to fasten with hooks 3b, etc., and the support column can be deeply embedded in the ground G. Therefore, even if the tensile load on the base end portion 11 due to water pressure becomes large, the strength of the mounting portion 2 is high, preventing the mounting portion 202 from coming loose or being damaged. The upward restricting portion 202a is provided to ensure that the base position of the base end portion 11, which serves as the fulcrum (tethering point), is lower than the point of force application (1 / 3h).

[0087] Furthermore, as shown in Figures 13A to 15B, the mounting parts 302, 402, and 502 are embedded in the road surface together with the base 2b and do not need to protrude from the road surface. Small rivers and irrigation canals C flowing through residential areas may be crossed by many bridges P and roads R. The mounting parts in areas without bridges P can be installed at the boundary between the road R running alongside the river or irrigation canal C and the river or irrigation canal C, or on sidewalks or shoulders, so as not to obstruct traffic.

[0088] Furthermore, "embedded in the road surface and not protruding from the road surface" means that there are no protrusions that would obstruct the passage of people or vehicles.

[0089] Furthermore, in the case of a narrow bridge P (road R), there is no significant water leakage even if the expansion member 10 is not installed at the attachment point 2 where it crosses the bridge P.

[0090] On the other hand, in the case of a wide bridge P (road R), the risk of leakage increases, so in that case, it is necessary to install attachments that protrude from the road surface on the road R in advance. However, since the attachments may obstruct traffic, the attachments 302, 402, and 502 are embedded in the road surface and do not protrude from the road surface, allowing people and vehicles to pass even in a temporary installation state, and enabling evacuation in emergencies.

[0091] One specific example of this configuration is shown in Figures 13A and 13B, where the mounting portion 302 is a support column 302d with a bollard structure, which is provided with an upward restricting portion 302a, is normally embedded in the road surface (ground G), and is pulled up from the road surface and fixed using a lifting handle 302b.

[0092] In a bollard structure, there is a support post storage hole 302c dug in the ground G (usually a sleeve is embedded in the ground to form the storage hole), a support post 302d that slides up and down, a fixing member 302e such as a pin to fix the pulled-out support post 302d, and an upward restricting portion 302a. Although not shown, the upward restricting portion 302a may also be configured as a top cover for the support post.

[0093] The bollard-structured support column 302d can be extended to the required height, and as shown in Figure 13A, it is normally embedded in the support column storage hole 302c without protruding from the road surface, so it does not obstruct the passage of people or vehicles under normal circumstances. Furthermore, as shown in Figure 13B, when the support column 302d is temporarily installed, it only needs to be raised to the minimum height (for example, 30 mm) at which the base end 11 or the connector 3 can be attached, so even when it is temporarily installed, vehicles can pass by at a slow speed.

[0094] The second specific configuration example, as shown in Figures 14A to 14C, involves a mounting portion 402 that is positioned so as not to protrude from the ground G. Its shape is linear, such as an I-shape 402a, or key-shaped, such as a U-shape or L-shape 402b, or ring-shaped, such as an O-shape 402c, and it is composed of a rod-shaped body with a round or square cross-section.

[0095] The third specific configuration example, as shown in Figures 15A and 15B, is a rod-shaped body 502a, which is provided in a position that does not protrude from the ground G, and can be pulled up from the road surface like a pull-up handle, with a round or square cross-section.

[0096] As shown in Figure 15A, by excavating the road surface to create a space and providing a rod-shaped attachment part 502 that does not protrude from the ground G, traffic can pass through without obstruction under normal circumstances. Even during the temporary installation shown in Figure 15B, most of the attachment part 502 does not protrude from the ground G, and only the connector 3 is above the ground G, so vehicles and the like can move slowly to avoid it.

[0097] - Modified Connection Part - As shown in Figure 16A, the connection part 613 of the base end 611 is composed of a thickness difference provided continuously or intermittently on the base end 611. As shown in Figure 16B, the mounting part 602 is provided with a gap difference corresponding to the thickness difference of the base end 611 for fastening.

[0098] As shown in Figure 16C, the mounting portion 602 is usually composed of two parts: a U-shaped base portion 602a and a retaining part such as a spacer 602b. After inserting the base end portion 611, which has a difference in thickness, into the base portion 602a, the spacer 602b may be inserted into the U-shaped base portion 602a from the side to create a gap in the mounting portion 602, thereby securing the base end portion 611. In this embodiment, the length from the root position of the base end portion to the mounting portion connection position of the base end portion becomes the length of the tethering member C.

[0099] -Protective Section- In this embodiment, as shown in Figure 17, a protective section 15 is provided on the upper part of the mounting section 2 to prevent or reduce collisions between driftwood from the river or irrigation channel C and the inflatable body.

[0100] In this embodiment, the expansion member 10 is made of a material and thickness that prevents damage from contact with driftwood. However, depending on the flooding situation, it is conceivable that very large pieces of driftwood may collide with it. Therefore, by providing a protective section 15 on the upper part of the mounting section 2 to prevent or mitigate collisions between driftwood from the river or irrigation channel C and the expansion section 12, it is possible to prevent large pieces of driftwood from directly colliding with the expansion member 10, thereby creating a more reliable waterproofing device 1.

[0101] As shown in Figure 17, the mounting portion 2, including the upper protective portion 15, is located at the bottom of the fence F or guardrail.

[0102] Fences F or guardrails are already installed in most small rivers and irrigation canals C that flow through residential areas. Since the lower part can be used as the attachment point and the upper part as the protective section, the prior installation of attachment points 2 becomes unnecessary. This offers the significant advantage of being able to install waterproofing devices 1 in many small rivers and irrigation canals C that flow through residential areas without any prior construction costs or time.

[0103] In the case of fence F or guardrail, the mounting location is the support post of fence F or the support post of guardrail.

[0104] The support post section has a structure that is strong enough to support the fence F or guardrail, making it a suitable mounting location for the connector 3.

[0105] Furthermore, in the case of a fence F with sufficient strength in the lower rail section, the mounting portion 2 of the connector 3 may be used as the lower rail section, as shown in Figure 18. By using the mounting portion 2' as the lower rail section, the spacing at which the connector 3 is attached can be freely set, resulting in a protective section 15' whose spacing can be appropriately set in balance with the strength of the fence F and the pressing load F1 of the expansion member 10 against the ground G.

[0106] If there is no upward restricting section in a suitable position at the bottom of the existing fence F or guardrail posts, it is advisable to install only the restricting section 2a in advance, as shown in Figure 19.

[0107] Furthermore, in this embodiment, as shown in Figure 20, the protective portion 15 of the mounting portion 2 and the expanded portion 12 of the expanded portion 10 may come into contact when the waterproof device 1 is installed and the expanded portion 10 has been filled with water W0 and inflated.

[0108] In this way, when the protective part 15 such as the fence F and the expanding part 12 come into contact, the expanding part 12 supports the fence F from behind, preventing the protective part such as the fence F from being damaged by large driftwood or other objects.

[0109] -Other configurations- In this embodiment, the water pressure of the water filling the expansion member 10 may be higher than the water pressure when a part of the expansion section 12 is open to the atmosphere.

[0110] By utilizing the pump 21, which can fill with water at high water pressure, the water pressure can be made higher than the water pressure when a portion of the expansion section 12 is open to the atmosphere, thereby making the weir more circular and increasing its height.

[0111] Furthermore, in this embodiment, the waterproofing device 1 may be installed in a small river or irrigation canal C in a residential area where a road R runs right next to the river or irrigation canal C.

[0112] By installing the waterproofing device 1, which can be easily attached to small rivers or irrigation canals C in residential areas, which are numerous throughout Japan, flood-preventing walls can be constructed without large-scale construction, the deployment of many personnel for installation of the waterproofing device 1, or the amount of labor required. Therefore, it is an extremely effective application.

[0113] Furthermore, in this embodiment, the location where the waterproofing device 1 is installed may be the perimeter of a large, demarcated plot of land, such as the site of a large commercial facility, the site of an apartment building, the site of a hospital, the site of a factory, or an area where multiple detached houses are built.

[0114] Common waterproofing measures for these facilities include placing sandbags at entrances and installing water barriers. However, large facilities have numerous entrances that need waterproofing, posing challenges in terms of securing personnel and the significant amount of work required for installation. Furthermore, facilities with large grounds often incur substantial damage costs due to flooding of areas other than entrances, such as the total loss of vehicles due to submersion and the need for re-repair of flowerbeds and other structures.

[0115] Therefore, by installing waterproofing device 1 around the perimeter of a large, partitioned plot of land, it is possible to protect vehicles and flowerbeds from damage.

[0116] In areas with a large, partitioned site, if there are existing fences or other structures that can be used, the mounting section 2 should be utilized. In areas where there are no such structures, the mounting section 2 must be installed in advance.

[0117] If the entire perimeter of a large, partitioned plot of land is at risk of flooding, waterproofing device 1 should be installed around the entire perimeter. However, if the large plot of land has elevation differences and includes areas without flooding risk, waterproofing device 1 should only be installed on the flood-risk portion of the perimeter of the plot.

[0118] Since such facilities are used by many people, it is advisable to install the inflatable member 10 (connecting it to the mounting part 2) in advance so that people and vehicles can pass over the folded inflatable member 10.

[0119] Then, when it looks like flooding is about to occur, you can start the pump 21 to fill it with water W0 and raise the waterproof wall.

[0120] In areas where it does not obstruct the passage of people or vehicles, the expansion member 10 may be left permanently installed.

[0121] When filling with water W0 from a fire hydrant or the like, the existing hose 20 and pump 21 can be used by connecting them to the water inlet / outlet 14.

[0122] Alternatively, rainwater pumped from a drainage basin or water tank that collects rainwater from a partitioned, large plot of land may be used to fill the expanding member 10 and create a waterproof wall.

[0123] In the case of such large-area sites, heavy rainfall can generate a large amount of rainwater, and if this rainwater is discharged into sewer pipes, storm drains, or irrigation channels C, the risk of flooding in the surrounding area increases. Therefore, facilities with large area sites are required to have water storage facilities.

[0124] By filling the expandable member 10 with rainwater pumped from a drainage basin or water storage tank that collects rainwater falling on a partitioned, large site, it is possible to reduce the amount of rainwater flowing into sewer pipes, etc., thereby reducing the risk of flooding in the surrounding area, while also preventing rainwater from entering the facility.

[0125] In the case of large commercial facilities or factories, a water storage tank may be installed to surround the perimeter of the site, and the expansion member 10 may be installed inside it.

[0126] For facilities with large grounds, the amount of rainwater discharged from the site into rainwater pipes and irrigation channels C during short, heavy downpours necessitates the installation of water storage facilities. However, while water storage facilities are typically installed underground in parking lots, this is difficult because the parking lot becomes unusable during installation work, disrupting normal operations. However, a trench measuring 1m wide x 1.5m deep allows for the installation of a water storage tank around the site without disrupting normal operations. Even a trench measuring 1m wide x 1.5m deep can store a considerable amount of rainwater if it is installed to cover the entire perimeter of a large site. Furthermore, before the water storage tank is full, rainwater is drawn from the tank and filled into the expansion members 10 installed around the site, increasing the storage capacity by the amount of the expansion members 10. If the water storage tank overflows, the expansion members 10 can prevent flooding on the site.

[0127] Furthermore, the waterproofing device 1 may be installed on a seawall along the coast.

[0128] Especially in urban ports and fishing harbors, high breakwaters are rarely constructed because boats need to be moored there and people and cargo need to be loaded and unloaded. As a result, when low pressure systems or typhoons approach, high tides can cause seawater to overflow the breakwaters, flooding coastal buildings and parking lots and causing significant damage.

[0129] Since permanent embankments cannot be installed along such levees, a waterproof device 1 that can be installed in a short time, as in this embodiment, is extremely effective.

[0130] Two to three days before the expected approach of a low-pressure system or typhoon, the expansion member 10 is temporarily installed. On the day when there is actually a risk of overflow, the pump 21 is used to draw up seawater and fill the expansion member 10 with seawater to complete the installation. It is advisable to make the pump 21 remotely switchable on and off in case of risk.

[0131] If an existing fence F is already in place, it can be used as mounting section 2. If there is no existing fence F, multiple mounting sections 2 should be installed in advance, spaced apart on the side where the embankment is present or absent. If there is pedestrian or vehicle traffic, it is best to install the fence so that it does not protrude from the top surface of the embankment.

[0132] Furthermore, as shown in Figure 21 (folded form before water filling), this embodiment consists of a base end 11 provided to prevent rolling and an expansion section 12 that is continuous with the base end 11 and expands when filled with water. Although not shown in Figure 21, the base end 11 is provided with multiple connection sections 13 at intervals, which can be connected to the mounting section 2 or the connector 3. It is also preferable to provide at least one water inlet / outlet port 14 that leads to the inside of the expansion section 12 and is connected to the hose 20.

[0133] Then, in the temporary installation state of the waterproofing device 1 shown in Figures 1A and 21 (before filling with water), the expansion member 10 becomes a flat plate that people and vehicles can pass over.

[0134] As shown in Figure 1B, when the waterproofing device 1 is installed and filled with water in the expansion section 12, the expansion section 12 expands into a roughly circular or elliptical shape, and at the same time, the base end 11 protrudes from the expansion section 12.

[0135] Furthermore, when the inner circumference length of the expanding portion 12 that expands when filled with water is A, the length D from the base position of the base end 11 where it connects to the expanding portion 12 to the tip of the base end 11 is in the relationship 0.02A ≤ D < (A / π), and the inner wall of the expanding portion 12 is a watertight, elongated bag-shaped inner wall, so that the expanding portion 12 and the base end 11 of the expanding member 10 are seamlessly and continuously constructed as one unit.

[0136] By setting the length D from the base position of the base end 11 of the expansion member 10 to the tip of the base end 11 to D < (A / π), when the expansion section 12 is filled with water to form a waterproof wall and water close to the weir height infiltrates, the fulcrum position at the base of the base end 11 is lower than 1 / 3h where the total water pressure is applied, so that when water pressure is generated the expansion member 10 presses against the ground G, preventing water leakage. Furthermore, by setting 0.02A ≤ D, it is possible to prevent excessive tensile load from being applied to the base end 11.

[0137] The expansion member 10 is made of a flexible material, with a rubber base, and the expansion portion 12 and the base end portion 11 are vulcanized integrally. To form the expansion portion 12, a release sheet is inserted near the center of the expansion member 10 during molding, and after vulcanization, the expansion portion 12 separates into upper and lower parts at the release sheet portion to form a bag 10'.

[0138] The expansion member 10 is continuously molded and vulcanized in lengths of several tens or several hundred meters, depending on the required length for the waterproofing device 1, to form a long bag 10'.

[0139] The base end portion 11 is provided with multiple connection portions 13 at intervals, which can be connected to the mounting portion 2 or the connector 3. The connection portions 13 are usually formed by post-processing using a drill or punch.

[0140] Furthermore, at least one water supply / drain port 14 is provided that is connected to the inside of the expansion section 12 and to the hose 20. The water supply / drain port 14 may be provided in a part of the expansion section 12, or at the base end 11 or both ends in the longitudinal direction, as long as it is connected to the inside of the expansion section 12.

[0141] Since the expansion member 10 is vulcanized integrally with the expansion portion 12 and the base end portion 11 using a flat heat vulcanization press, it becomes flat in a temporary installation state, allowing people and vehicles to pass over it. When the waterproof device 1 is fully installed with water filled into the expansion portion 12, the expansion portion 12 expands into a roughly circular or elliptical shape, and at the same time the base end portion 11 protrudes from the expansion portion 12.

[0142] Both ends of the expansion member 10 in the longitudinal direction are sealed to prevent leakage of the filled water. This sealing method can be achieved by sandwiching the member between metal plates and tightening them with bolts, or by folding reinforcing fabric over both ends during belt molding and then vulcanizing to create a bag-like structure.

[0143] As shown in Figure 21, by constructing the expansion portion 12 and the base portion 11 seamlessly, continuously, and integrally, when water is filled into the expansion portion 12, the base portion 11 can protrude from the expansion portion 12. Structurally, a protrusion (tip) may also be provided at the portion diagonally opposite the base portion 11.

[0144] The expansion portion 12 and base portion 11 of the expansion member 10 are made of a seamlessly integrated rubber material. The rubber material is ideal as the material for the expansion member 10 because it possesses flexibility, watertightness, and strength. By simultaneously vulcanizing the expansion portion 12 and the base portion 11 (usually by press vulcanization), they can be seamlessly integrated. By seamlessly integrating them with rubber material, the base portion 11 protrudes from the expansion portion 12, preventing excessive shear force from being generated at the base of the base portion 11 and thus preventing damage to the expansion member 10.

[0145] In terms of rubber material, ethylene-propylene rubber is the most preferable due to its balance of weather resistance, heat resistance, abrasion resistance, flexibility, strength, fatigue resistance, watertightness, and price, but other synthetic rubbers and natural rubbers can also be used.

[0146] In the first modified example of the expansion member 10, as shown in Figure 22, a reinforcing cloth 16 is embedded around the entire inner surface of the expansion portion 12.

[0147] When the weir height is low and the water pressure is small, it can be constructed from a single rubber material as shown in Figure 21. However, when a higher weir height is required, the reinforcing cloth 16 can be embedded around the entire inner circumference of the expansion section 12 as shown in Figure 22, allowing it to withstand higher water pressure. The reinforcing cloth 16 can be woven cloth or bamboo blinds, but woven cloth is preferable.

[0148] Furthermore, while polyamide fiber, which possesses both strength and elasticity, is most preferable as the material for the reinforcing fabric 16, synthetic fibers such as polyester or natural fibers such as cotton can also be used. The fabric composition and number of layers of the reinforcing fabric are appropriately selected depending on the weir height and water pressure, but in the case of a single layer, a seamless woven fabric is preferable.

[0149] In the case of two or more layers, the required strength can be maintained by shifting the abutment position J1 of the first layer and the abutment position J2 of the second layer, as shown in the second modified example of the expansion member 10 in Figure 23.

[0150] In a third modified example of the expansion member 10, as shown in Figure 24, a reinforcing cloth 16 is continuously embedded from the expansion portion 12 to the base end portion 11.

[0151] In this configuration, when the expansion section 12 is filled with water W0, the base end 11 protrudes from the expansion section 12, preventing large shear and peeling forces from being generated at the base of the base end 11. However, when a higher weir height is required, the water pressure becomes greater, and a large tensile load is generated at the base end 11, which prevents the expansion member 10 from rolling. Therefore, to reinforce the base end 11 and prevent damage at the base of the base end 11, it is preferable to embed a continuous reinforcing cloth 16 from the expansion section 12 to the base end 11, as shown in Figure 24.

[0152] Furthermore, in the fourth modified example of the expansion member 10 shown in Figure 25, the reinforcing cloth 16 can be used to cover the entire expansion portion 12 and the base end portion 11, thereby serving both the function of reinforcing the expansion portion 12 and the base end portion 11.

[0153] Furthermore, in this embodiment, the rubber hardness of the lower surface (contact surface with the ground G) of the expansion member 10 may be lower than that of the upper surface (waterproof wall surface).

[0154] The upper surface of the expansion member 10 is preferably made of rubber with a high rubber hardness (Shore A 60 to 80) in order to prevent damage from driftwood and other debris flowing from rivers or irrigation canals C. On the other hand, the lower surface of the expansion member 10 is preferably made of rubber with a low rubber hardness (Shore A 40 to 59) in order to prevent leakage of water W and to conform to the unevenness of the road surface to some extent.

[0155] Although not shown in the diagram, if there is a large step in the road surface, such as between the road and the sidewalk, the expansion member 10 can fit to the road surface and prevent leakage if a slope is provided in advance to reduce the step, or if the step is eliminated using an inclined plate (ramp) to fill the gap.

[0156] In the fifth modified example of the expansion member 10 shown in Figures 26A and 26B, the reinforcing cloth 16 on the inner surface of the expansion member 10 is folded back, and by installing release sheets 17 inserted during manufacturing in multiple locations, the outer circumference of the circle when filled with water W0 can be made to exceed twice the width of the expansion member 10 before filling.

[0157] In the configuration of the expansion member 10 described so far, a portion of the total width of the expansion member 10 becomes the base end portion 11, and the remainder becomes the expansion portion 12. Therefore, when filled with water, the outer circumference of the circle is approximately twice the length of the expansion portion 12, and less than twice the width of the expansion member 10.

[0158] On the other hand, increasing the height of the weir would require widening the width of the expansion member 10. However, widening the width of the expansion member 10 would cause it to protrude significantly onto the road R in its installed state before filling with water W0, thus obstructing the passage of vehicles and other objects.

[0159] Therefore, the reinforcing fabric 16 on the inner surface of the expansion member 10 may be folded back so as not to obstruct passage when installed and to obtain a high weir height when expanded.

[0160] Specifically, during molding before vulcanization, as shown in Figure 26A, the reinforcing cloth 16 is folded back and the release sheet 17 is inserted before vulcanization, so that the expansion member 10 is narrow when folded. On the other hand, when expanded by filling with water W0 as shown in Figure 26B, the expansion member 10 obtains an outer circumference length of the expanded portion 12 that is more than twice that of when folded, resulting in a high weir height.

[0161] - Installation Method of Waterproofing Device - Next, the installation method of the long bag-type waterproofing device 1 of this embodiment, which prevents flooding of rivers or irrigation canals C or inundation of the site due to sudden heavy rain and can be easily attached and detached, will be described.

[0162] First, the expansion member 10, which has been rolled up lengthwise and stored in a warehouse or similar place, is transported to a place at risk of flooding or inundation.

[0163] Next, the base end 11 of the expansion member 10 is spread out on the ground G (road surface) next to the mounting part 2 of the fence F, etc., and the base end 11 is attached to the mounting part 2 (post of the fence F, etc.) with a connecting device 3 such as a hook 3b.

[0164] Then, rainwater (or water from a fire hydrant) pumped up from a river, irrigation channel C, or drainage basin, etc., by the pump 21 is filled into the expansion member 10 via a hose 20 connected to the water inlet / outlet port 14 of the expansion member 10, forming a simple waterproof wall in a short time.

[0165] Thus, because the elongated water bag is flat and flexible, it can be rolled up for compact storage and transport.

[0166] Furthermore, since the connection to the mounting part 2 is by hooking, it does not require many people and time like conventional bolt fastening or driving in anchor piles U1, and can be installed quickly with fewer people.

[0167] Next, we will describe the installation method of the long bag-type waterproof device 1, which has two steps.

[0168] First, as the first step (the stage of preparation in advance based on weather information), transport the inflatable member 10, which has been stored rolled up in the length direction, to the flood or inundation risk area, spread it out on the ground G (road surface) next to the attachment part 2 of a fence F, etc., with the base end 11 of the inflatable member 10 facing the attachment part 2, and fasten the attachment part 2 (post of the fence F, etc.) and the base end 11 with a connecting device 3 such as a hook 3b, and lay the inflatable member 10 flat on the road surface so that people and vehicles can pass over the inflatable member 10.

[0169] Furthermore, if the installation does not cross the road R where the bridge P is located, the expansion member 10 can be lifted and leaned against or placed on the fence F to allow people and vehicles to pass through.

[0170] In the second step (when rainfall actually increases and the risk of flooding arises), rainwater (or water from a fire hydrant) pumped up from a river, irrigation channel C, or drainage basin, etc., by the pump 21 is used to fill the expansion member 10 through a hose 20 connected to the water inlet / outlet port 14 of the expansion member 10, thereby forming a simple waterproof wall in a short time.

[0171] In this second step, the pump 21 may be started remotely while checking the video feed from the river or irrigation canal C monitoring camera.

[0172] The small rivers and irrigation canals C in residential areas to which this embodiment is applied are often provided with multiple bridges P and roads R.

[0173] Another application example is a large, partitioned plot of land, which typically includes multiple roads or pathways for accessing the site.

[0174] In such cases, if the waterproof wall (expansion member 10) is erected before the risk of flooding increases, there is a problem in that the waterproof wall obstructs the passage of people and vehicles when they want to evacuate via bridges, roads R, or walkways before the risk of flooding increases, preventing evacuation.

[0175] Therefore, the installation of the waterproofing device 1 is made into two steps. The connection between the mounting part 2 and the base end part 11 is completed in advance, and when the evacuation of people is complete and the risk of flooding has increased, the pump 21 is started to raise the waterproof wall. This allows the timing of the evacuation of people and the installation of the waterproofing device 1 to be synchronized.

[0176] Furthermore, if large vehicles are passing on the bridge's road R, if there is a high volume of vehicle traffic, or if heavy rain is expected for several days and the temporary installation must be maintained during that time, in order to prevent damage from direct contact of tires, etc., with the surface of the expansion member 10, in the first step, the expansion member 10 in that area should be protected with a steel plate or the like (not shown), and in the second step, the steel plate or the like should be removed and water W0 should be filled into the expansion section 12. The expansion member 10 can withstand high loads, so there is no need to worry about damage if direct contact with tires, etc. is prevented with a thin steel plate or the like.

[0177] In the first step, to allow people and vehicles to evacuate by passing over the inflatable member 10, the configuration does not involve driving anchor piles U1 into the left and right sides of the bag body 10', installing attachment parts 2, or installing ropes U2, etc., at regular intervals, as in conventional technology.

[0178] If it is deemed dangerous to start the pump 21 on-site, the pump 21 may be started remotely while monitoring the footage from the surveillance camera.

[0179] -Function and Effects- As described above, in the embodiment shown in Figure 7A, multiple through holes are provided at intervals in the base end portion 11 as the connecting portion 13.

[0180] As described above, creating a through-hole as the connection portion 13 of the base end portion 11 by post-processing after vulcanization of the rubber or rubber and reinforcing fabric 16 sheet is inexpensive and easy, making a through-hole a suitable example of a connection portion 13. Although the through-hole is usually circular, an elongated hole or other shape may be used if it is convenient for connection.

[0181] As shown in Figure 16A, another example of the connection portion 13 in this embodiment is that the base end portion 11 has a continuous or intermittent difference in thickness.

[0182] This continuous thickness difference can be easily manufactured by creating a step in the mold of the vulcanization press. Alternatively, a thickness difference may be created at the base end 11 of the flat expansion member 10 by post-processing such as grinding.

[0183] As shown in Figures 10A to 10E, in this embodiment, the connector 3 is pre-connected to the base end 11, and one or more hooks and / or fastening rings and / or ropes are attached to the tip of the connector 3.

[0184] In this way, by pre-connecting the base end 11 and the connector 3, and attaching a hook 3b, fastening ring 3d, and rope 3c to the tip of the connector 3, after transporting the inflatable member 10 with the connector 3 attached to the site, temporary installation can be completed simply by hooking the hook 3b at the tip of the connector 3 onto the mounting part 2. This allows for temporary installation to be performed in a very short time, and ensures that the required length of the connector 3 is achieved, along with the required combined length of the base end 11 and the connector.

[0185] In this embodiment, a long, bag-shaped water bag (expansion member 10) is used, which is advantageous because it can be rolled up for storage and transport. The expansion member 10 is integrally constructed with an expansion section 12 that expands when filled with water W0 and a base end 11 that supports the load to prevent the expanded expansion member 10 from rolling, resulting in a device with fewer parts and lower cost.

[0186] Furthermore, by filling the expansion section 12 with water W0 through the water inlet / outlet port 14 provided in the expansion member 10, the expansion section 12 expands into a roughly circular or elliptical shape, allowing a waterproof wall that covers a wide area to be set up in a short time.

[0187] Since the mounting portion 2 to which the base end portion 11 of the expansion member 10 is connected is installed on the ground G on the water side, the mounting portion 2 can be installed at the edge of the road R or elsewhere, and the mounting portion 2 does not obstruct the passage of vehicles.

[0188] Since the mounting section 2 is pre-installed, it does not require the extensive labor involved in driving in anchor piles U1 in emergencies, as is the case with conventional technology.

[0189] Since the base end 11 of the expansion member 10 is connected to the mounting portion 2 at intervals in multiple places, it does not require the extensive installation work of connecting a continuous mounting portion to the bag body in order to seal the entire boundary with the ground G with the mounting portion, as is the case with conventional rubber dams.

[0190] The base end portion 11 connected to the mounting portion 2 does not directly deform the bag body 10' (expansion portion) with a mooring member, unlike conventional methods that use support columns or ropes U2 to prevent the bag body from rolling. Therefore, there is no local deformation of the expansion member 10, and a stable weir height can be maintained.

[0191] In the temporary installation state (before filling with water) of the waterproofing device 1 with the expansion member 10 connected to the mounting part 2, the expansion member 10 is flat, unlike in the conventional technology, and there are no mooring members other than the bag body, such as ropes U2, that would obstruct passage on the road R. Therefore, people and vehicles can pass over the expansion member 10, and it does not obstruct the evacuation of residents in the temporary installation state.

[0192] In the completed installation state of the waterproofing device 1 with water filled in the expansion section 12, the expansion section 12 expands into a roughly circular or elliptical shape, and at the same time, the base end 11 protrudes from the expansion section 12. Therefore, large shear forces are not generated as in the case where a conventional flexible membrane for tethering (corresponding to the base end 11) is provided so as to be in contact with the outer circumference of the bag body (corresponding to the expansion section 12), and peeling or tearing of the base end 11 can be prevented.

[0193] Therefore, according to this embodiment, a practical configuration can be achieved as a waterproofing device for small rivers or irrigation canals located in residential areas.

[0194] The embodiments described above are essentially preferred examples and are not intended to limit the scope of the present invention, its applications, or uses.

[0195] 1 Waterproofing device 2, 2', 202, 302, 402, 502, 602 Mounting part 2a, 202a, 302a Regulating part 2b Base 2c Bolt 2d Plate 2e Through hole 3 Connector 3a Carabiner 3b Hook 3c Rope 3d Fastening ring 3e Chain 10, 610 Inflatable member 11 Base end 12 Inflatable part 13 Connection part 14 Water inlet / outlet (water inlet) 15, 15' Protective part 16 Reinforcement cloth 17 Release sheet 20 Hose 21 Pump 102 Fastening part case part 102a Shaft hole 102b Cam 103 One-touch fastening part 103a Fastening part body 103b Shaft 103c Pin 103d Spring 103e Knob 302b Lifting handle 302c Post storage hole 302d Post 302e Fixing member 402a I-shaped 402b Key-shaped 402c Ring-shaped 502a Rod-shaped body (U-shaped) 602a Base part 602b Spacer 611 Base end 613 Connection part B Bridge C Irrigation channel G Ground R Road W Water, water surface W0 Water (inside expansion section) U1 Anchor pile U2 Rope U3 Projection

Claims

1. A long, bag-type waterproofing device that can be attached and detached to prevent flooding of rivers or irrigation canals or inundation of a site, comprising: multiple attachment points pre-installed at intervals on the ground on the water-side; an expandable member connected directly to the attachment points or via connectors and portable in a foldable state; a hose for filling the expandable member with water; and a pump connected to the hose for drawing up water, wherein the expandable member has a base end to prevent rolling, an expandable section continuous with the base end that expands when filled with water, and at least one water inlet / outlet port that passes through the inside of the expandable section and is connected to the hose, and multiple connection points are provided at intervals on the base end that can be connected to the attachment points or connectors, and in a temporary installation state before filling with water, with the expandable member connected to the attachment points, the expandable member is flat and can be walked on by people or vehicles. A waterproofing device characterized in that, when the expansion portion is filled with water and the installation is complete, the expansion portion expands to have a substantially circular or elliptical cross-section, and at the same time the base end protrudes from the expansion portion, and when the inner circumference length of the expansion portion that expands when filled with water is A, and the height from the ground of the mounting portion connection position where the mounting portion is directly or indirectly connected to the base end is B, the length C from the base end root position where the base end is connected to the expansion portion to the mounting portion connection position is such that 0.02A ≤ C < (A / π) - 3B.

2. The waterproof device according to claim 1, characterized in that at least one connecting means between the base end connection and the mounting portion, the base end connection and the connector, the connector and the mounting portion, or between two or more connecting connectors is a fastening mechanism.

3. The waterproof device according to claim 1 or 2, characterized in that the connecting portion is composed of multiple through holes provided at intervals in the base end.

4. The waterproofing device according to claim 1 or 2, characterized in that the mounting portion is linear, key-shaped, or ring-shaped, and the cross-sectional shape is a rod-shaped body such as a round or square shape.

5. The waterproof device according to claim 1 or 2, characterized in that the connector includes a through hole which is the connection part, a rod-shaped body which is the mounting part, one or more hooks which fasten two or more connection parts together, a fastening ring and / or a rope.

6. The waterproofing device according to claim 1 or 2, characterized in that the mounting portion is a support column that protrudes from the ground or road surface and is provided with an upward restricting portion.

7. The waterproof device according to claim 1 or 2, characterized in that the connecting means between the mounting portion and the connector is a one-touch fastening component that can be fastened and unfastened by rotating a handle, knob, or knob.

8. The waterproofing device according to claim 1 or 2, characterized in that the mounting portion is embedded in the road surface and does not protrude from the road surface.

9. The waterproofing device according to claim 1 or 2, characterized in that the mounting portion is a support column of a bollard structure, which is provided with an upward restricting portion and is embedded in the road surface under normal conditions, and is pulled up from the road surface and fixed when in use.

10. The waterproofing device according to claim 1 or 2, characterized in that the mounting portion is provided in a position that does not protrude from the ground, can be pulled up from the road surface by a pull-up handle, is U-shaped or U-shaped, and has a round or square cross-sectional shape, or the like, as a rod-shaped body.

11. The waterproofing device according to claim 1, characterized in that the connection portion of the base end is composed of a difference in thickness provided continuously or intermittently at the base end.

12. The waterproofing device according to claim 11, characterized in that the mounting portion is provided with a gap difference corresponding to the thickness difference for fastening.

13. The waterproofing device according to claim 1, characterized in that a protective part is provided on the upper part of the mounting part to prevent or reduce the collision of driftwood from a river or irrigation canal with the inflatable body.

14. The waterproofing device according to claim 1 or 2, characterized in that it is installed along a small river or irrigation canal in a residential area where a road runs near a river.

15. The waterproofing device according to claim 13, characterized in that the mounting portion including the protective portion is located at the lower part of a fence or guardrail.

16. The waterproofing device according to claim 15, characterized in that the mounting portion for the fence or guardrail is composed of the support post portion or the lower rail portion of the fence or guardrail.

17. The waterproofing device according to claim 13, characterized in that, in the completed installation state after filling the expansion member with water and inflating it, the protective portion of the mounting portion, including the protective portion, and the expanded portion of the expansion member are in contact.

18. The waterproofing device according to claim 1 or 13, characterized in that the water pressure of the water filling the expansion member is higher than the water pressure when a part of the expansion portion is open to the atmosphere.

19. The waterproofing device according to claim 1 or 13, characterized in that it is installed around a partitioned plot of land such as the site of a large commercial facility, the site of an apartment building, the site of a hospital, the site of a factory, or an area where multiple detached houses are built.

20. The waterproofing device according to claim 19, characterized in that rainwater pumped up from a drainage basin or water storage tank that collects rainwater falling on the partitioned site is filled into an expandable member to form a waterproof wall.

21. The waterproofing device according to claim 20, characterized in that the water storage tank is provided so as to surround the perimeter of the site, and the waterproofing device is installed inside the water storage tank.

22. The waterproofing device according to claim 1 or 13, characterized in that it is installed on a seawall along the coast.

23. An expandable member for use in a long, removable, bag-type waterproofing device that prevents flooding of rivers or irrigation canals or inundation of a site, wherein the expandable member has a base end that prevents rolling, an expandable section continuous with the base end that expands when filled with water, and at least one water inlet / outlet that is connected to the inside of the expandable section and connected to a hose, the base end has multiple connection parts at intervals that can be connected to an attachment part or connector, the inner wall of the expandable section is a watertight bag-shaped inner wall, in a temporary installation state before filling the expandable section with water, in a completed installation state after filling the expandable section with water, the expandable section expands into a roughly circular or elliptical shape, and at the same time the base end protrudes from the expandable section, and when the inner circumference length of the expandable section that expands when filled with water is A, the length D from the base position of the base end where the base end is connected to the expandable section to the tip of the base end is An expansion member characterized by the relationship 0.02A ≤ D < A / π.

24. The expansion member according to claim 23, characterized in that the expansion portion and the base end of the expansion member are constructed seamlessly, continuously, and integrally.

25. The expansion member according to claim 23, characterized in that the expansion portion has a reinforcing cloth embedded around its entire inner surface.

26. The expansion member according to claim 23, characterized in that a reinforcing cloth is continuously embedded from the expansion portion to the base end portion.

27. The expansion member according to 23, characterized in that the rubber hardness of the lower surface is lower than the rubber hardness of the upper surface of the expansion member.

28. The expansion member according to 23, characterized in that the reinforcing fabric on the inner surface of the expansion member is folded back, and the circumference of the circle when filled with water is more than twice the width of the expansion member before filling.

29. The expansion member according to claim 23, characterized in that multiple through holes are provided at intervals in the base end.

30. The expansion member according to claim 23, characterized in that a continuous or intermittent difference in thickness is provided at the base end.

31. The expansion member according to 23, characterized in that one or more connectors, including hooks and / or fastening rings and / or ropes, are pre-attached to the base end.

32. A method for forming a waterproof wall using a long, reusable, water-bag-type waterproofing device that prevents flooding of rivers or irrigation canals or inundation of a site, characterized by carrying an expandable member, which has been stored rolled up in the length direction, to a flood- or inundation-prone area, spreading it out on the ground or road surface next to an attachment point such as a fence, with the base end of the expandable member facing the attachment point, securing the attachment point and the base end with a connector such as a hook, and filling the expandable member with rainwater pumped from a river, irrigation canal, or drainage basin, or water from a fire hydrant via a hose connected to the water inlet of the expandable member, thereby forming a temporary waterproof wall.

33. A method for forming a waterproof wall using a long, retractable, water-bag-type waterproofing device to prevent flooding of rivers or irrigation canals or inundation of a site, characterized in that, in the first step, an expandable member stored rolled up in the lengthwise direction is carried to a flood- or inundation-prone area, and is spread out on the ground or road surface next to an attachment point such as a fence, with the base end of the expandable member facing the attachment point, and the attachment point and the base end are fastened together with a connector such as a hook, and the expandable member is laid flat on the road surface, and the waterproofing device is temporarily installed so that people and vehicles can pass over the expandable member, and if the installation does not cross a road with a bridge, the expandable member is lifted and leaned against or placed on a fence, thereby temporarily installing the waterproofing device so that people and vehicles can pass over it, and in the second step, rainwater pumped up from a river or irrigation canal or drainage manhole, or water from a fire hydrant is filled into the expandable member via a hose connected to the water inlet of the expandable member, thereby completing the installation of the waterproofing device.

34. The method for forming a waterproof wall according to 32 or 33, characterized in that the pump is activated remotely while checking the video footage from a river or irrigation canal monitoring camera.

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