JP4152299B2 - Composite tube material for water expansion body continuous artificial weir and watertight long tube composite containing the same - Google Patents

Description

  The present invention relates to a composite tube member for a water expansion body continuous artificial weir used for measures against water damage and a watertight long tube composite including the composite tube member. More specifically, the present invention relates to water level warnings that require urgency such as river flooding due to typhoons, torrential rains, coastal water level rises due to storm surges, etc. A composite tube material with a double-cylindrical structure that is useful for a water-injected expansion tubular continuous artificial weir constructed locally, with a light-weight artificial weir member that is normally stored compactly for flooding countermeasures in nearby areas, etc. In addition, the present invention relates to a watertight long tube composite containing the same.

  Conventionally, sandbags and waterproof sheets are used in combination with river flooding due to typhoons, heavy rains, coastal water level rise due to storm surges, residential areas that are chronically inundated, and flooding countermeasures such as areas near adjustment ponds. It was common to surpass the rapid. However, these sandbags not only require a large amount of sandbags and the work of many people, but also make sandbags and sandbags that are exposed to the wind and rain, and the work is complicated. As humans worked apart in various places, the sandbag wall was often accompanied by defects and deficiencies, despite the time spent on the work. Water stoppage using sandbags is effective for emergency repairs to the breakage of the dike weir that originally existed as a building, as well as water stoppages for small structures such as house entrances, underground building entrances, and subway entrances. It was an inappropriate measure for flooding in the area.

  As an improvement of conventional sandbags, Japanese Patent Laid-Open No. 2001-73337 (Patent Document 1) discloses a sandbag-type water bag suitable for procuring instant sandbags by pouring floods at a flood damage site into a plastic bag, and drinking water storage A sandbag type water bag that is also used for fire extinguishing and fire extinguishing has been devised, but a water bag filled with a plastic bag by this device is wet and slippery in the rain, it is difficult to hold and deform, etc. There is a problem in practical use, and, like conventional sandbags, it is an inappropriate material for flood control in a wide area. Possible materials and systems were needed. Although the field is different from the technical field of the present invention, as an example of a hose-like water tube, in the civil engineering field of JP 07-292650 A (Patent Document 2) and JP 07-292651 A (Patent Document 3), A compact ground compaction method in which a large number of hose-like water bags are arranged side by side on a soft ground, and further, a hose-like water bag is constructed in multiple stages on top of this, and water is poured into these hose-like water bags to apply a water load. Has been proposed. These hose-shaped water bags are used for multiple products for the purposes of Patent Document 2 and Patent Document 3, and do not have a connecting function for connecting them sideways. Even if these hose-like water bags are used for the impervious weir, they have poor shape stability due to bulging pressure, and the surface is slippery, so that installation stability is lacking and at the same time collision with protrusions. It had a problem such as bursting.

Japanese Patent Laid-Open No. 2001-73337, pages 1 to 3, FIG. 1 to 3 Japanese Patent Application Laid-Open No. 07-292650, pages 2 to 4, FIGS. 1 to 5 Japanese Patent Application Laid-Open No. 07-292651, pages 2-3, 1-3 Japanese Patent Laid-Open No. 2000-226824, pages 1-2, 1-3

  The present invention is a water injection / expansion tubular continuous artificial manipulator that can construct a lightweight artificial weir system member that is normally stored and stored in a flood damage prediction area, in response to the urgent flood damage countermeasure that was a problem of the prior art. It is an object of the present invention to provide a composite tube material useful for a weir system and a watertight long tube composite containing the composite tube material. In addition, the present invention provides a watertight long tube composite that is easy to construct and withdraw, has excellent impact resistance against protrusions, and can be repeatedly used as a water expansion body continuous artificial weir, and a composite tube material useful therefor. It is something to be offered.

  As a result of repeated research and examination of a water injection tube for a long artificial weir excellent in protrusion-proof collision resistance to solve the above problems, a water-blocking tarpaulin inner membrane layer and a permeable mesh outer membrane layer having a connection structure at both ends A double-structure long tube composite comprising the above and a watertight long tube expansion body obtained by pouring water into the composite are optimal as constituent members of a continuous artificial weir used for urgent water damage countermeasures, The present invention has been completed by finding that the projection collision resistance is excellent and can be used repeatedly.

The composite tube material for a water expansion body continuous artificial weir of the present invention (hereinafter referred to as the composite tube material of the present invention) is (a). A tubular water-impervious tarpaulin membrane material layer comprising a fiber fabric as a base fabric, a resin coating layer containing at least one of a thermoplastic resin and an elastomer is formed on both surfaces of the fabric, and having a tensile fracture strength of 500 N / 3 cm or more; , (B). It includes a base fabric made of open woven or knitted fabric formed from fiber yarns, and a thermoplastic resin layer covering the entire exposed surface of the fiber yarns, and has a tensile fracture strength of 500 N / 3 cm or more. A water permeable mesh sheet layer, and the water permeable tarpaulin film material layer (a) is surrounded and covered by the water permeable mesh sheet layer without adhering to form a double cylindrical structure. It is a feature.
In the composite tube material of the present invention, the resin coating layer of the water-blocking tarpaulin film material layer is made of vinyl chloride resin, polyurethane-based elastomer resin, polyester-based elastomer resin, styrene-based elastomer resin, polyamide-based elastomer resin, ethylene-α-olefin. At least one selected from a copolymer resin, an ethylene-vinyl acetate copolymer resin, an ethylene- (meth) acrylic acid (ester) copolymer resin, a polypropylene resin, a reactor-PP alloy resin, and a thermoplastic rubber It is preferable that it is formed by.
In the composite tube material of the present invention, in the water shielding tarpaulin film material layer, a laminate of the base fabric and the thermoplastic resin layer formed thereon may be laminated and bonded in two or more layers.
In the composite tube material of the present invention, it is preferable that the water-permeable mesh sheet layer has a porosity of 5 to 50%.
In the composite tube material of the present invention, the thermoplastic resin layer of the water permeable mesh sheet layer is selected from a vinyl chloride resin, a polyurethane resin, a polyester resin, a vinyl acetate copolymer resin, and an acrylic copolymer resin. It is also preferable to include at least one thermoplastic resin.
The watertight long tube composite of the present invention is a long tube composite having a long tube member made of the composite tube material of the present invention and a connected water-impervious member attached to both ends thereof. The connection water-impervious member has a water-impervious means and a connection means coupled to a connection water-impervious member of another long tube composite, and the long tube composite is watertight by pumping water into it It is characterized by being able to be converted into a long tube expanding body.

  The water-tight long tube composite made of the composite tube material for a water expansion body continuous artificial weir of the present invention is a long tube having a double structure comprising a water-blocking tarpaulin inner membrane layer and a water-permeable mesh outer membrane layer. In addition, it has excellent inflation pressure stability and installation stability effect, and exhibits excellent water shielding and damming effects, so it is extremely useful for urgent water damage countermeasures, and at the same time it can be used repeatedly, and it can be used repeatedly. Therefore, it is a highly practical damming material.

  The composite tube material for a water expansion body continuous artificial weir of the present invention is a composite tube material having a double cylindrical structure having a water-impervious tarpaulin membrane material layer and a water-permeable mesh sheet layer that covers and protects the entire outer surface. A plurality of long tube composites each having a connecting member that seals the ends are integrated at the ends. Each long tube composite can be converted into a watertight long tube expansion body by pouring water.

  The water barrier tarpaulin membrane material layer of the composite tube material used in the long tube composite of the artificial weir of the present invention includes a fiber fabric as a base fabric, and a tensile fracture in which a thermoplastic resin layer is formed on the entire surface of both sides A film material having a strength of 500 N / 3 cm or more can be used. Synthetic fiber (for example, polypropylene fiber, polyethylene fiber, vinylon fiber, polyester fiber, aromatic polyester fiber, nylon fiber, aromatic polyamide fiber, acrylic fiber, polyurethane fiber), semi-synthetic Fibers (for example, rayon, acetate) and inorganic fibers (for example, glass fiber, silica fiber, alumina fiber, carbon fiber) can be used, but polyester fiber and polypropylene fiber are particularly suitable as the base fabric used for the tarpaulin film material. A base fabric containing at least one selected from nylon fibers, vinylon fibers, and aromatic polyamide fibers is preferred because of its excellent durability.

  These fiber yarns can be used in the form of monofilament yarns, multifilament yarns, short fiber spun yarns, split yarns, etc. Among them, the multifilament yarns having a fineness of 500 to 3500 dtex, particularly 1000 to 2500 dtex are particularly preferred. It is preferable from the viewpoint of strength and creep strength. The fiber fabric is preferably a fiber fabric having these yarns as warp and weft and having a porosity (ratio of the area of the stitched portion to the base fabric area) of 20% or less, particularly 10% or less. When the porosity exceeds 20%, water pressure distortion tends to occur in the water-impervious tarpaulin film material, and a gap may be generated in the continuous artificial weir.

  The fiber fabric may be any of woven fabric, knitted fabric, and these resin-impregnated fabrics. Examples of the woven fabric include plain weave, twill weave, and satin weave. The tarpaulin film material is preferably excellent in the balance of water pressure strength and elongation in the warp / longitudinal direction. Further, it is preferable to use a raschel knitted fabric from the viewpoint of the tear strength of the membrane material. Furthermore, from the viewpoint of the water pressure resistance of the membrane material and the impact resistance against protrusions, the base fabric may be a triaxial woven fabric or a multiaxial woven fabric. It is preferable to use a shaft fabric.

  The water-impervious tarpaulin film material is obtained by completely covering both sides of the above-mentioned fiber cloth base fabric to form a resin coating layer containing at least one of a thermoplastic resin and an elastomer. The formation of the resin coating layer is based on the mass of the fiber fabric base fabric. It is 50-500 mass% with respect to this, Preferably it is 100-300 mass%. The resin coating layer is i). Coating or dipping of a composition comprising one or more of a thermoplastic resin or elastomer, ii). A laminate of a composition film comprising at least one of a thermoplastic resin and an elastomer, iii). It can be formed by a method such as the combined use of i and ii. As the thermoplastic resin, a soft polyvinyl chloride resin is most preferably used from the viewpoint of versatility and processability. Polyvinyl chloride resins include polyvinyl chloride resins and other monomers copolymerizable with vinyl chloride monomers, such as ethylene, vinyl acetate, vinylidene chloride, (meth) acrylic acid, (meth) acrylic acid esters, etc. Copolymer resin, urethane grafted polyvinyl chloride resin and the like. As the polyvinyl chloride resin, paste vinyl chloride (for coating and dipping) or straight vinyl chloride (for film molding) can be used, and these are softened by adding a plasticizer. As the plasticizer, known ones such as phthalate ester, aliphatic ester, chlorinated paraffin, polyester, and polymer plasticizer (trade name: Elvalloy / Mitsui DuPont Polychemical Co., Ltd.) can be used. The blending amount of the plasticizer can be arbitrarily set. In the present invention, the blending amount of 30 to 100 parts by mass is particularly preferable with respect to 100 parts by mass of the polyvinyl chloride resin. In addition, the polyvinyl chloride resin contains known stabilizers such as fatty acid Ca-based, fatty acid Zn-based, organic Sn-based, Ba-Zn composite-based, epoxy-based, hydrotalcite-based, and also organic pigments and inorganic pigments And a known colorant such as metal powder, a known weathering stabilizer such as a benzotriazole compound, a benzophenone compound, a HALS compound, a hindered phenol compound, and a vitamin E compound. Preferably, known flame retardants such as bromine compounds, antimony trioxide, aluminum hydroxide, known fillers such as calcium carbonate and barium sulfate, and other antifungal agents, curing agents, antistatic agents, if necessary Known additives for plastics such as lubricants and viscosity modifiers can be arbitrarily blended.

  The water-impervious tarpaulin film material used in the present invention is applied to a fiber fabric, i). A paste in which a vinyl chloride composition sol is attached by a coating method, a dipping method, etc., and this is gelled by heating to form a thermoplastic resin layer. ii). A film obtained by laminating a straight PVC composition by a calender method, a T-die extrusion method, an inflation method, or the like with heat or an adhesive. iii). Paste PVC composition sol is attached by coating method, dipping method, etc., and this is heated and gelled to form a thermoplastic resin coating layer, and the straight PVC composition is calendered, T-die extrusion method, inflation on this surface It can be obtained as a laminate of a thermoplastic resin film melt-molded by the method etc., but in the present invention, it can be obtained by the methods i) and iii) particularly from the viewpoint of water pressure strength and protrusion collision resistance. Those are suitable and preferred.

  In particular, when a design that does not discharge hydrogen halide gas at the time of incineration is desired, polyurethane-based elastomers, polyester-based elastomers, styrene-based elastomers, polyamide-based elastomers, ethylene-α-olefins are used to form resin coating layers. Copolymer resins, ethylene-vinyl acetate copolymer resins, ethylene- (meth) acrylic acid (ester) copolymer resins, propylene resins, reactor PP alloys, thermoplastic rubbers, and blends of these resins. Can be used. In particular, as a water-blocking tarpaulin with a halogen-free design, a polyurethane resin solution (water-dispersed type, organic solvent-soluble type) is attached to the fiber fabric by a coating method, a dipping method, etc., and dried to form a thermoplastic resin layer. It is formed on this surface by heat laminating an elastomer resin film obtained by melt molding a polyurethane elastomer composition by a calendering method, a T-die extrusion method, an inflation method or the like. Most preferable from the viewpoint. In these thermoplastic resins, known additives for plastics such as colorants, flame retardants, fillers, lubricants, weathering stabilizers, antifungal agents and the like can be arbitrarily blended and used.

  The tensile breaking strength of the water-impervious tarpaulin used in the present invention is preferably 500 N / 3 cm (warp direction, weft direction), particularly 1000 N / 3 cm (warp direction, weft direction) or more. If the tensile fracture strength is less than 500 N / 3 cm (warp direction, weft direction), there is a concern that the watertight long tubular expansion body or its joint may be broken by water injection pressure or water load. From the viewpoint of the above, it is inappropriate to use the impermeable weir of the present invention. Further, in order to obtain higher protrusion impact resistance, two or more base fabrics are used, and the tensile fracture strength is 1000 N / 3 cm (warp direction, as resin coating layer / base fabric / resin coating layer / base fabric / resin coating layer). (Weft direction) may be used.

  The composite tube material constituting the watertight long tube composite used in the water expansion body continuous artificial weir of the present invention uses the above water-blocking tarpaulin membrane material in the longitudinal direction, rounds it into a cylindrical shape, The inner cylinder is overlapped and this part is fused and sealed by a high frequency welder method, hot plate heating method, hot trowel heating method, hot air method, ultrasonic method, electromagnetic induction heating method, etc., preferably by a high frequency welder method. It is a composite tube material having a double cylindrical structure in which a part is formed and is combined as an outer layer cylinder that covers and covers a water-permeable mesh sheet described later. The outer diameter of the inner cylindrical portion by the water-impervious tarpaulin is preferably at least φ100 mm or more, and the maximum diameter φ is about 600 mm, in particular, φ150˜, in order to use it for the watertight long tube composite for artificial weir. The diameter is preferably 300 mm. If the outer diameter exceeds 600mm, the resulting composite tube material becomes heavier, and the resulting watertight long tube composite deteriorates the connection workability by a small number of people while maintaining the expanded body by water injection of the tube composite. The water pressure to do so may become excessively large and the tube may break. In addition, the length of one unit of the long tube composite is preferably at least 10 m or more, and is at most 100 m, particularly 10 to 30 m, considering the efficiency of the construction work.

  The water-permeable mesh sheet layer used in the composite tube material of the present invention includes a woven or knitted fabric made of fiber yarns as a base fabric, and a thermoplastic resin layer is formed on the entire exposed surface of the fiber yarns, A mesh sheet having a breaking strength of 500 N / 3 cm or more can be used. Synthetic fibers, semi-synthetic fibers, and inorganic fibers (explained in terms of water-impervious tarpaulins) can be used as the above-mentioned fiber yarns for base fabrics, but polyester fibers, polypropylene fibers, nylon fibers are particularly suitable as base fabrics used for mesh sheets. A base fabric containing at least one selected from vinylon fibers and aromatic polyamide fibers is preferred because of its excellent durability. These yarns can be used in the form of monofilament yarns, multifilament yarns, short fiber spun yarns, split yarns, etc. Among them, in particular, the multifilament yarns having a fineness of 500-3500 dtex, particularly 1000-2500 dtex, are resistant to water pressure. From the viewpoint of creep strength.

  The base fabric is preferably a woven fabric having these yarns as warps and wefts and having a void ratio (ratio of the area of the stitched portion to the base fabric area) of 5 to 50%, preferably 10 to 35%. When the porosity is less than 5%, the water permeability of the mesh sheet is deteriorated, and at the same time, the surface unevenness of the sheet is reduced, and the anti-slip effect and installation stability of the watertight long tubular expansion body constituting the artificial weir of the present invention May become sparse. If the porosity exceeds 50%, the anti-slip effect of the tubular expansion body can be obtained, but this time it will protect the inner water-impervious tarpaulin from the trauma caused by the construction of the site, and the inner layer will be shielded by inflation pressure. The effect of suppressing dimensional distortion of water tarpaulin may be poor. The base fabric may be any of woven fabric, knitted fabric, and these resin-impregnated fabrics. As the woven fabric, plain woven fabric, patterned woven fabric, basket woven fabric, etc. can be used. It is excellent in stability against misalignment. Further, from the viewpoint of multidirectional dispersion of water pressure resistance applied to the mesh sheet, a multiaxial woven fabric such as a triaxial woven fabric or a tetraaxial woven fabric can be used for the base fabric. In the composite tube material 1 shown in FIG. 1, the water-impervious tarpaulin film material layer 2 is firmly heat-bonded and sealed in a heat-bonding portion 2a formed by overlapping both end edges.

  The water-permeable mesh sheet used in the present invention is a woven or knitted fabric with a base fabric, i). A paste vinyl chloride composition sol (explained in water-impervious tarpaulin) is attached by a coating method, a dipping method, etc., and this is gelled by heating to form a thermoplastic resin layer on the surface of the fiber yarn, ii). In particular, when a design that does not discharge hydrogen halide gas at the time of incineration is desired, polyurethane resin solution, polyester resin solution, vinyl acetate copolymer resin solution, acrylic copolymer resin solution Can also be used in which a thermoplastic resin layer is formed on the surface of the fiber yarn by attaching it by a coating method, dipping method or the like, and drying it. The amount of the thermoplastic resin layer formed is 25 to 250 mass%, preferably 75 to 150 mass%, based on the mass of the open woven or knitted fabric. In these thermoplastic resins, known additives for plastics such as colorants, flame retardants, fillers, lubricants, weathering stabilizers, antifungal agents and the like can be arbitrarily blended and used. The tensile fracture strength of the water-permeable mesh sheet used in the present invention is preferably 500 N / 3 cm (warp direction, weft direction), particularly 1000 N / 3 cm (warp direction, weft direction) or more. If the tensile fracture strength is less than 500 N / 3 cm (warp direction, weft direction), it may be difficult to protect the entire watertight long tubular expansion body from excessive inflation pressure and water load.

  As illustrated in FIG. 1, the composite tube material constituting the watertight long tube composite used in the water expansion body continuous artificial weir of the present invention is the above-described inner layer cylindrical fusion seal body of the water-blocking tarpaulin. This is a double cylindrical structure formed by completely covering a tubular water-impervious tarpaulin membrane material layer 2 with a water-permeable mesh sheet layer 3 made of an outer-layer cylindrical fusion-sealed seal body of the water-permeable mesh sheet. The water-permeable mesh sheet layer 3 is rolled into a cylindrical shape, and both end edges thereof are firmly stitched and thermally bonded at the heat bonding portion 3a. When the watertight long tube composite of the present invention is injected and expanded, it is preferable that the tarpaulin film material layer 2 and the mesh sheet layer are in close contact with each other. This double cylindrical structure can be obtained by processing a water-tight tarpaulin membrane material layer 2 and a water-permeable mesh sheet layer 3 by heat fusion in advance into a cylindrical shape. If it is, the rigidity will be large and the curve following performance as an artificial weir will be insufficient, the fusion seal part by overlapping will be 4 layers, distortion will occur in the watertight long tube expansion body, and it will cause integrated damage and repair Inconveniences such as making it difficult. On the other hand, in the composite tube material having a double cylindrical structure according to the present invention, the positions of the fusion seal portions can be set differently by making each cylindrical workpiece independent from each other, and the watertightness length It is possible to minimize distortion generated in the long tube expansion body and to absorb and mitigate torsional distortion caused by water pressure caused by water shielding. Further, the protrusion collision damage of the inner layer tarpaulin film material layer can be detected by water leakage from the gap portion of the outer permeable mesh sheet layer. On the other hand, for example, in the case of a double-cylindrical tube made of a water-impervious tarpaulin, leakage due to the breakage of the inner tube accumulates between the two layers of the water-impervious tarpaulin, and the abnormality cannot be detected from the appearance. The double-cylindrical tube used in the present invention is easy to repair, and also has a practically sufficient curve installation property as an artificial weir.

  The outer cylindrical cylindrical water-permeable mesh sheet layer is formed by rolling the above-mentioned water-permeable mesh sheets into a cylindrical shape and overlaying them. This part is a high-frequency welder method, hot plate heating method, hot trowel heating method, hot air method, ultrasonic method, electromagnetic induction heating. It can be formed by fusion sealing by a method such as the method, and if necessary, heat can be heat-sealed with a tape-like member slitting the above-mentioned water-impervious tarpaulin or a water-permeable mesh sheet in the overlapping portion. A plastic resin (or elastomer) tape can be inserted to reinforce the joint strength. The inner diameter of the outer cylindrical mesh sheet layer is the same as the outer diameter of the inner cylindrical tarpaulin membrane material layer, and the mesh sheet layer has a φ of about 100 to 600 mm, particularly φ within a range of 150 to 300 mm. It is preferable in handling. Further, the length of one unit of the long tube composite is at least 10 m or more in consideration of the efficiency of the construction work, but it is preferable that the length is 100 m, particularly 10 to 30 m.

  In the structure of the watertight long tube composite 4 illustrated in FIG. 2 of the present invention, the long tube member 5 made of the composite tube material 1 and both ends thereof are sealed, and other long tube composites are sealed. Connected water-impervious members 6 and 7 for connecting to the body are mounted. It is preferable from the viewpoint of workability of construction of the impermeable weir that the connected impermeable member 6 and the connected impermeable member of other long tube composites are three-dimensionally fitted to each other and can be mounted with one touch. Examples of the one-touch mounting method for the connecting water-impervious member include mechanical fixing by pressing (for example, connection of a fire hydrant and a fire hose), mechanical fixing method in which the convex molding member 6 and the concave molding member 7 are three-dimensionally fitted, or For example, a fixing method of rotating by 90 ° and locking may be mentioned. Moreover, it is preferable that these connection water-impervious members 6 and 7 are provided with at least one of a water injection valve, a water discharge valve, and an air replacement valve, and the water injection valve and the water discharge valve may also have a function. it can. The air replacement valve is opened to push out the air in the tube at the time of water injection to increase the water injection efficiency, and at the same time, the function of discharging excess water when the water is full and the valve can be closed to stop the function.

  The connected water-impervious members 6 and 7 are composed of a hard plastic part and a metal part 8, and the metal part 8 forms a cylindrical part for connecting and fixing the connected water-impervious member to the long tube member. Alternatively, a drain plug is provided, and a watertight sealing treatment is performed for connecting and fixing the long tube member and the connecting water-impervious member. It is preferable that this connection water-impervious member has the same diameter as the water injection expansion body of the watertight long tube member, and the length is 5 to 30 cm, preferably 10 to 20 cm. The hard plastic part is a cylinder that covers this metal part, and the connecting means is molded on the front. These parts are integrated with the metal part by bolting, but they can be separated and disassembled. Is preferred. The height of the connecting means and the depth of the connecting means of the connecting water-impervious member are preferably 1 to 15 cm, more preferably 3 to 10 cm. Further, the connecting means can be strengthened by designing the wall thickness along the tip direction or by further providing a fitting protrusion on the connecting means. As a material constituting the connecting means (hard plastic part), a thermoplastic resin such as hard polyvinyl chloride resin, high density polyethylene, ultra high molecular weight polyethylene, polypropylene, polystyrene, polyethylene terephthalate, ABS resin, polyamide, polycarbonate, polyacetal, Engineer plastics such as polysulfone, polyphenylene sulfide, polyether ether ketone, polyarylate, polytetrafluoroethylene, and heat such as phenol resin, urea resin, melamine resin, unsaturated polyester resin, epoxy resin, diallyl phthalate resin, polyurethane resin A cured resin or the like can be used. In the present invention, the rigid plastic constituting the connecting molded member is preferably a polyolefin resin such as high-density polyethylene, polypropylene, polyamide, or nylon resin from the viewpoint of lightness and durability, and those having injection moldability are preferable. preferable. These resins contain short fibers such as glass fiber chopped strands, carbon fiber chopped strands, and carbon fiber milled strands, and are intended to improve the breaking strength, wear resistance, etc. of the connected water shielding member used in the present invention. A reinforced resin is preferable.

As illustrated in FIGS. 3 and 4, the water-expandable continuous artificial weir 10 using the water-tight long tube composite of the present invention is provided with two long water-proof members 6 and 7 at the ends. A plurality of units composed of a watertight long tubular expansion body 9 obtained by arranging the tube member 5 vertically and individually pumping water are connected and integrated in the longitudinal direction.
At this time, the water supply source is directly supplied from the flood, or in the case of rivers, directly from the river, and in the case of residential areas, from the fire hydrant installed in the ordinance. It is preferable that the water supply pump system is equipped with a trap or a filter that can remove foreign matter, assuming that the supply of contaminated water from the water is forced.

  For the water expansion body continuous artificial weir, a positioning bag can also be used as ancillary equipment, but especially for the positioning bag, a storage space is not required and it is easy to carry from the purpose of the present invention. Is desirable. As such a positioning bag, a bag containing a water-absorbing resin and having a sheet-like shape before use, which absorbs water and expands into a pillow shape is preferable. In a water expansion body continuous artificial weir, the end of a sheet-type positioning bag containing a water absorbent resin between the water expansion watertight long tube composite located on the non-damming side of the artificial weir and the construction site ground Lay and use. This sheet-like positioning bag absorbs overflow and expands to become a wedge, and exerts an effect of mitigating and preventing the artificial weir from shifting due to the water pressure of the stored water. This weaving countermeasure can be further strengthened by placing a pile driver or a stopper member on the non-weiring side of the artificial weir and placing it on the side of the water-expandable watertight long tube composite as necessary. In addition, especially in the unfavorable environment for construction of artificial weirs on hard ground such as concrete and road surface unevenness in urban areas, such a material is used as a material to fill gaps with the ground, particularly as a material to seal grooves on concrete ground that cause water leakage. A sheet-like bag containing a water-absorbing resin can be used. As the water-absorbing resin, known ones such as a crosslinked carboxymethyl cellulose, a crosslinked polyvinyl alcohol, and a crosslinked sodium polyacrylate can be used.

EXAMPLES Next, although an Example demonstrates this invention further more concretely, this invention is not limited to the range of these examples. Examples of the watertight long tube composite for the water expansion body continuous artificial weir of the present invention and the expansion body are shown below.
[Example 1]

(1). Manufacture of long tubular shaped body with double cylindrical structure
(1-a). Water shielding tarpaulin paste 100 parts by weight PVC, phthalate ester plasticizer 60 parts by weight, Ba-Zn composite stabilizer 2 parts by weight, epoxidized soybean oil 3 parts by weight, antifungal agent 0.3 parts by weight, Ca filler Polyester (PET) multifilament with a fineness of 1666 dtex using a paste vinyl chloride composition sol consisting of 10 parts by weight of an agent, 2 parts by weight of a crosslinking agent, 2 parts by weight of a white pigment, 3 parts by weight of a yellow pigment, and 0.5 parts by weight of a red pigment Orange on both sides of a plain weave fiber fabric (vertical yarn driving density: 21 / 2.54 cm, weft driving density: 19 / 2.54 cm: mass 215 g / m ² : 180 cm width). The paste vinyl chloride composition sol colored in the form of a knife is uniformly knife-coated, and this is heated and gelled at 170 ° C. to form a thermoplastic resin coating layer of soft vinyl chloride on both sides of the fiber fabric. mm, was obtained tarpaulins (orange) 200 meters Weight 670 g / m ^2. This tarpaulin had a tensile breaking strength (JIS L1096) of 2800 N / 3 cm in the vertical direction and 2500 N / 3 cm in the horizontal direction.

(1-b). Water- permeable mesh sheet fineness of 833 dtex / 3 polyester (PET) multifilament fiber yarn-free mesh fabric (vertical yarn driving density: 11 / 2.54 cm, weft yarn driving density: 11/2 .54 cm: mass 185 g / m ² : 200 cm width) is dipped using the paste vinyl chloride composition sol having the same composition as (1-a) above, and this is heated and gelled at 170 ° C. to soften the entire surface of the fiber yarn. A thermoplastic resin layer made of vinyl chloride was formed to obtain a mesh sheet (orange) 200 m having a thickness of 0.7 mm and a mass of 480 g / m ² : porosity of 25%. The tensile fracture strength (JIS L1096) of this mesh sheet was 2200 N / 3 cm in the vertical direction and 2200 N / 3 cm in the horizontal direction.

(1-c). Processing of Composite Tube Material with Double Cylindrical Structure The total amount of the water-impervious tarpaulin (1-a) described above was cut in half to 82.5 cm width to obtain 8 cut pieces of 82.5 cm width × 25 m length. Each of the cut pieces was rounded into a cylindrical shape and subjected to high-frequency welder fusion sewing (4 cm × 100 cm weld bar attachment) with the overlapped portion having a width of 4 cm as a joining portion to obtain an inner layer tube having an outer diameter of 250 mm. Further, the entire mesh sheet of (1-b) was cut into 83.5 cm widths to obtain 8 cut pieces having a length of 83.5 cm width × 25 m. Each of the cut pieces was rounded into a cylindrical shape, and a high-frequency welder was welded (4 cm × 100 cm weld bar was mounted) with the overlapping portion having a width of 4 cm as a joint portion to obtain an outer tube having an outer diameter of 252 mm. The inner layer tube was inserted into this outer layer tube to obtain a tubular molded body (25 m × 8 pieces) having a double cylindrical structure (FIG. 1).

(2). Manufacture of long tube composite
(2-a). 25% by mass of carbon fiber chopped strands are blended into a connected water-blocking member (homo) polypropylene resin, and an antioxidant added thereto is melt kneaded with an extruder, which is then injected into a mold and carbon fiber reinforced polypropylene. A molded member made of resin was obtained. This molded member is bolted to an aluminum alloy water-impervious cylindrical member having an outer diameter of 230 mm and a length of 200 mm having a water injection valve (also used as a drain valve) on the front surface and an air replacement valve on the side surface. A connecting water-impervious member having a convex (6 in FIG. 2) and concave (7 in FIG. 2) connecting means having a three-dimensional fitting of 200 mm was obtained.

(2-b). Long tube composite Composite tube material (25 m × 8) having a double cylindrical structure obtained in (1-c) above is connected to the convex and concave connection shields obtained in (2-a) above. A water member (with a connecting means capable of three-dimensional fitting) is covered with an aluminum alloy impermeable cylindrical member, and is fixed by a steel belt in a concave groove provided in the aluminum alloy impermeable cylindrical member (FIG. 2). .

(3-a). Construction test Eight long tube composites for artificial weir members with a length of 25m are arranged in series in the longitudinal direction on the flat part (concrete floor) of the riverbed, and the ends of the extension and the end of the extension are sandbags and piles. Fixed by hitting. Next, water is pumped up from the river and poured from the long tube complex at the start, and when excess water blows out from the air replacement valve, the water injection is terminated and plugged to form an expanded body of the watertight long tube complex. And it connected with the following elongate tubular-shaped molded object. In a similar procedure, water was poured into all eight long tube composites, and these were sequentially connected to form a water expansion body continuous artificial weir (FIG. 4) having a length of 200 m. Further, at this time, an end portion of about 5 cm of a positioning bag (30 × 45 cm) containing a water-absorbing resin was sandwiched under the watertight long tubular expansion body on the non-wetting side at intervals of about 2 m. As shown in FIG. 3, each of the long tube composites 4 composed of the connecting water-impervious members 6 and 7 and the long tube member 5 formed the expansion body 9 by injecting water.

(3-b). Water shielding test The river water pumped up by the pump was discharged inside the artificial weir constructed in (3-a) above, and when about 1 hour later the water level reached 40 cm, the water discharge was stopped and the artificial weir was observed. The artificial weir of the present invention has a double-cylindrical structure with a water-impervious tarpaulin membrane material for the inner layer and a water-permeable mesh sheet for the outer layer, providing excellent anti-slip effect and installation stability. There was no inconvenience that a large amount of water was lost or the artificial weir itself was destroyed, and a large amount of discharged water could be blocked for a long time. In addition, the water-absorbing resin encapsulating sac sheet sandwiched between the watertight long tubular expansions on the non-damming side at an interval of about 2 m absorbs and expands to exert a wedge effect, and a large amount of dam water pressure It has been confirmed that the lateral movement of the artificial weir due to is eased and prevented. Moreover, the dismantling of the water expansion body continuous artificial weir of this invention and the removal operation | work of draining were also complete | finished easily after completion | finish of this test.
[Comparative Example]

  The outer layer water-permeable mesh sheet (1-b) is omitted from the long tube composite (2) having the double cylindrical structure of the above-described embodiment, and the long tube composite of the comparative example is formed as a water shielding tarpaulin (1-a) 1. It was composed of layers. Except for this, the construction test and the water-impervious test were carried out in the same specifications as in the example. As a result, the watertight long tube composite of the comparative example has poor installation stability, such as sliding with the ground, and the entire tube swells due to bulging pressure due to water injection, and water flows from the gap. Admitted to do. In addition, the rub test on concrete with the water-tight long tube composite of the example showed no abnormality in water-tightness, but the water-tight long tube composite of the comparative example caused a laceration on the surface from which water leakage occurred. did. In addition, the watertight long tube composite of the example did not show any abnormality in watertightness due to the crash of the concrete block, but the watertight long tube composite of the comparative example caused a laceration on the surface and leaked water from there. did.

  By using a watertight long tube composite containing the composite tube material of the present invention, it is possible to easily construct a water expansion body continuous artificial weir, and it exhibits excellent water shielding and damming effects compared to conventional sandbags. Therefore, it is extremely useful for emergency flood countermeasures. In addition, it is a highly useful damming material because it can be easily withdrawn after installation, and it can be used repeatedly because it has excellent impact resistance against protrusions.

Explanatory drawing which shows an example of a structure of the composite tube material of this invention. Explanatory drawing which shows an example of a structure of the elongate tube composite_body | complex of this invention. Explanatory drawing which shows the water injection expansion | swelling of the long tube composite_body | complex of this invention. Explanatory drawing which shows an example of the structure of the water expansion body continuous artificial weir by the water expansion body of the long tube composite_body | complex of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Composite tube material 2 ... Water-impervious tarpaulin film material layer 3 ... Water-permeable mesh sheet layer 2a, 3a ... Adhesion part 4 ... Watertight long tube composite 5 ... Long tube member 6 ... Connecting means which can be three-dimensionally fitted Connecting water-impervious member 7 with a connecting means that can be three-dimensionally fitted with the connecting water-impervious member 7 ... 6 Metal part 9 ... Water injection expansion body 10 of a long tube complex ... Water expansion body continuous artificial weir

Claims (6)

  (A). A tubular water-impervious tarpaulin membrane material layer comprising a fiber fabric as a base fabric, a resin coating layer containing at least one of a thermoplastic resin and an elastomer is formed on both surfaces of the fabric, and having a tensile fracture strength of 500 N / 3 cm or more; , (B). It includes a base fabric made of open woven or knitted fabric formed from fiber yarns, and a thermoplastic resin layer covering the entire exposed surface of the fiber yarns, and has a tensile fracture strength of 500 N / 3 cm or more. A water-permeable mesh sheet layer, and a water-swelling tarpaulin film material layer (a) that surrounds and coats the outer peripheral surface of the water-impervious tarpaulin film material layer (a) without adhering to form a double cylindrical structure Composite tube material for body continuous artificial weir.   The resin coating layer of the water-blocking tarpaulin film material layer is made of vinyl chloride resin, polyurethane elastomer resin, polyester elastomer resin, styrene elastomer resin, polyamide elastomer resin, ethylene-α-olefin copolymer resin, ethylene-acetic acid. It is formed of at least one selected from vinyl copolymer resin, ethylene- (meth) acrylic acid (ester) copolymer resin, polypropylene resin, reactor-PP alloy resin, and thermoplastic rubber. The composite tube material for a water expansion body continuous artificial weir described in 1.   The water-swelling tarpaulin film material layer, wherein the laminated body of the base fabric and the thermoplastic resin layer formed thereon is laminated and bonded to two or more layers. Composite tube material for artificial weirs.   The composite tube material for water expansion body continuous artificial weirs according to claim 1, wherein the water-permeable mesh sheet layer has a porosity of 5 to 50%.   The thermoplastic resin layer of the water-permeable mesh sheet layer is a thermoplastic resin comprising at least one selected from a vinyl chloride resin, a polyurethane resin, a polyester resin, a vinyl acetate copolymer resin, and an acrylic copolymer resin. The composite tube material for water expansion body continuous artificial weirs of Claim 1 containing resin.   A long tube composite comprising a long tube member made of the composite tube material according to any one of claims 1 to 5 and a connected water-impervious member attached to both ends thereof, wherein the connection The water-impervious member has a water-impervious means and a connecting means coupled to a connected water-impervious member of another long tube composite. A water-tight long tube composite for a water expansion body continuous artificial weir, characterized in that it can be converted into a tube expansion body.

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