JP5081460B2 - Impermeable structure and construction method of impermeable structure - Google Patents

Description

  The present invention relates to a water-impervious structure and a method for constructing a water-impervious structure, and in particular, to an inner surface of a landfill section of a waste disposal site for disposal of industrial waste and general waste, a surface of waste after completion of landfill, and the like. The present invention relates to a water-impervious structure to be constructed and a construction method of the water-impervious structure.

  In a waste disposal site where industrial waste and general waste are landfilled, sewage containing harmful substances leached from the waste permeates into the ground and contaminates the surrounding environment by mixing into groundwater veins, etc. Since there is a possibility, a water-impervious structure is constructed on the inner surface of the landfill section to prevent the sewage leached from the waste from penetrating into the ground. In addition, even after the waste disposal site is closed, a water-impervious structure is constructed on the surface of the landfill waste after the landfill is completed, so that rainwater can penetrate into the waste in the waste disposal site for a long time. It is preventing.

  As a water-blocking structure to be constructed in a landfill section of a waste disposal site as described above, for example, in Patent Document 1, a lower water-blocking layer made of a clay layer, an asphalt concrete layer, or the like is formed on the inner surface of a landfill section with a predetermined thickness. Protected by non-woven fabric etc. via a three-dimensional network made of polypropylene or high-density polyethylene on the upper part of the water shielding sheet, with a water shielding sheet made of synthetic resin or synthetic rubber laid on the upper part of the lower water shielding layer A water shielding structure in which members are laid is disclosed.

  In this case, the protective member is watertightly joined to the water shielding sheet at a predetermined interval in a bag shape, and the upper part of the water shielding sheet is partitioned into a plurality of bag-shaped sections, and each bag-shaped section has a leak detection system. An electrode and an injection pipe for injecting a water stop material from the water stop material supply facility are respectively attached.

  By the way, in the water shielding structure having the above-described configuration, the water shielding sheet and the protective member are formed of different materials, and therefore, they cannot be bonded together by a heat fusion method. For this reason, the two must be joined with an adhesive, and work such as application of the adhesive to the joint surface and pressurization of the joint surface is required at the time of joining. Therefore, the construction efficiency is deteriorated and the construction cost is high. In addition, since operations such as application of adhesive to the joint surface and pressurization of the joint surface are performed manually, the bonding strength varies due to uneven application of adhesive, variation in pressure, etc. It is difficult to form a completely sealed void between the water shielding sheet.

  On the other hand, in Patent Document 2, a water-impervious sheet and a protective mat made of different materials are provided with a meshing member integrally provided at a joint portion between the water-impervious sheet and the protective mat, and the protective mat is engaged with the meshing member. A water-blocking structure is disclosed in which both are integrally joined via an adhesive.

However, even in the water-impervious structure having such a configuration, as in the water-impervious structure described in Patent Document 1, it is necessary to perform operations such as application of adhesive to the joint surface and pressurization of the joint surface. The joining work takes a lot of labor and time. In addition, since operations such as application of adhesive to the joint surface and pressurization of the joint surface are performed manually, the bonding strength is likely to vary due to uneven application of the adhesive, variation in pressure, etc. It is difficult to form a completely sealed void between the sheet and the protective mat.
Japanese Patent No. 3675671 JP 2006-205081 A

  The present invention has been made in view of the conventional problems as described above, and can effectively join a water shielding sheet and a protective member made of different materials, and can keep construction costs low. Provided is a water shielding structure that can always be bonded with a constant bonding strength and can form a completely sealed void between the water shielding sheet and the protective member, and a method for constructing the water shielding structure. For the purpose.

In order to solve the above problems, the present invention employs the following means.
That is, the present invention is a water-blocking structure that is constructed on the surface of a water-blocking target location and blocks the water-blocking target location, the water-proof sheet laid on the surface of the water-blocking target location, A material different from the water-impervious sheet that is laminated on the surface of the water-impervious sheet and has a predetermined portion bonded to the water-impervious sheet to form at least one sealed space with the water-impervious sheet. A protective mat comprising: a joint auxiliary member including the same material as the water shielding sheet is previously impregnated in at least a joint portion of the protective mat with the water shielding sheet, and the impregnated joint is provided. The joint portion of the protective mat is integrally joined to the water shielding sheet via an auxiliary material.

According to the water-impervious structure of the present invention, a joining auxiliary material containing the same material as that of the water-impervious sheet is integrally provided by impregnation in advance at least at the joint between the protective mat and the water-impervious sheet. By heating and pressing between the joint and the water shielding sheet, the impregnated joining aid is melted and solidified, so that the joint portion of the protective mat is joined to the water shielding sheet via the joining aid. be able to.

Further, the present invention is a water-blocking structure that is constructed on the surface of the water-blocking target location and shields the water-blocking target location, the water-blocking sheet laid on the surface of the water-blocking target location, A material different from the water-impervious sheet that is laminated on the surface of the water-impervious sheet and has a predetermined portion bonded to the water-impervious sheet to form at least one sealed space with the water-impervious sheet. A protective mat comprising: a mating auxiliary material including the same material as the water shielding sheet is entangled by sewing at least at a joint portion of the protective mat with the water shielding sheet; A part of the fiber of the bonding auxiliary material is exposed from the surface of the bonding portion, and the bonding portion of the protective mat is integrally bonded to the water shielding sheet via the entangled fibers of the bonding auxiliary material. To do.

According to the water-impervious structure of the present invention, at least the joint of the protective mat with the water-impervious sheet is integrally provided by sewing the fibers of the joining auxiliary material including the same material as the water-impervious sheet by sewing. Since some of the fibers of the joining aid are exposed from the surface of the joint, the joining aid is exposed from the surface of the joint by heating and pressing between the joint of the protective mat and the water shielding sheet. By melting and solidifying the fiber portion, the joint portion of the protective mat can be integrally joined to the water shielding sheet via the joining auxiliary material.

Further, the present invention provides a water shielding sheet laid on the surface of the water shielding target portion, and a protective mat made of a material different from the water shielding sheet is laminated on the surface of the water shielding sheet, so that a predetermined portion of the protective mat is formed. A method for constructing a water shielding structure that forms at least one sealed space between the protective mat and the water shielding sheet by joining the water shielding sheet, By integrally impregnating the joining portion with the water-impervious sheet in advance with a joining auxiliary material containing the same material as the water-impervious sheet, and by melting and solidifying the joining auxiliary material impregnated in the joint portion, The joint portion of the protective mat is integrally joined to the water shielding sheet via a joining auxiliary material impregnated in the joint portion.

According to the construction method of the water-impervious structure of the present invention, the joint portion of the protective mat is brought into close contact with the water-impervious sheet, and the space between the protective mat and the water-impervious sheet is heated and pressurized, and at least the water-impervious sheet of the protective mat and By melting and solidifying the joining auxiliary material previously impregnated in the joining portion, the joining portion of the protective mat can be integrally joined to the water shielding sheet via the joining aid material.

Further, the present invention provides a water shielding sheet laid on the surface of the water shielding target portion, and a protective mat made of a material different from the water shielding sheet is laminated on the surface of the water shielding sheet, so that a predetermined portion of the protective mat is formed. A method for constructing a water shielding structure that forms at least one sealed space between the protective mat and the water shielding sheet by joining the water shielding sheet, A joining auxiliary material including the same material as the water shielding sheet is integrally joined to the joining portion with the water shielding sheet by entanglement by sewing, and a part of the fibers of the joining aid material is provided on the surface of the joining portion. The fiber portion of the joining auxiliary material exposed from the surface of the joint portion is melted and solidified, and thereby the shielding portion is joined via the joining auxiliary material in which the joint portion of the protective mat is entangled with the joint portion. Water Characterized by joining together the bets.

According to the construction method of the water-impervious structure of the present invention, the joint portion of the protective mat is brought into close contact with the water-impervious sheet, and the protective mat is heated and pressurized between the water-impervious sheet, Protective mat by melting and solidifying the part exposed from the surface of the joint part of the fiber of the joining auxiliary material, which is integrally provided by entanglement with the joint part by sewing, and part of which is exposed from the surface of the joint part These joint portions can be integrally joined to the water-impervious sheet via a joining auxiliary material.

As described above, according to the water-impervious structure and the water-impervious structure construction method of the present invention, the joining auxiliary material is integrally provided by impregnation or sewing in advance at least on the joint portion of the protective mat with the water-impervious sheet. In the case of joining the protective mat and the water shielding sheet made of different materials, the joint portion of the protective mat is brought into close contact with the water shielding sheet, and between the joint portion of the protective mat and the water shielding sheet is heated and pressurized, By melting and solidifying the joining auxiliary material previously provided integrally by impregnation or sewing to at least the joint portion of the protective mat with the water shielding sheet, the joint portion of the protective mat is integrated with the water shielding sheet via the joining auxiliary material. The protective mat and the water shielding sheet can be bonded uniformly with a predetermined bonding strength, and a completely sealed void can be formed between the two. In addition, since it is only necessary to heat and press between the joint portion of the protective mat and the water shielding sheet, it is possible to efficiently perform the joining work of the joint portion of the protective mat and the water shielding sheet, and the time required for construction, Time and cost can be reduced.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show an embodiment of a water shielding structure according to the present invention. FIG. 1 is a schematic sectional view showing the whole water shielding structure, and FIG. 2 is a partially enlarged view of FIG. 3 is an enlarged view of a portion A of the protective mat of FIG.

  That is, the water-impervious structure 1 of the present embodiment is applicable to a waste disposal site for landfill disposal of industrial waste and general waste (hereinafter referred to as “waste”). As shown in FIG. 2, the water shielding sheet 2 laid on the inner surface 16 of the landfill section 15 where the waste is landfilled, and the protective mat 4 stacked on the water shielding sheet 2 via the spacer member 3. And.

  The water-impervious sheet 2 forms a sheet having a predetermined thickness, width, and length made of a material having water-impervious properties, and a plurality of sheets are provided so as to cover the entire inner surface 16 of the concave landfill section 15. The water-impervious sheet 2 is laid on the inner surface 16 of the landfill section 15, and the edges of the adjacent water-impervious sheets 2 are joined together in a water-tight manner by thermal fusion, thermocompression bonding, or the like.

  Examples of the material of the water-impervious sheet 2 include synthetic rubbers and synthetic resins. For example, vulcanized rubber (EPDM), vinyl chloride resin (PVC), olefin-based thermoplastic rubbers (TPO-PP, TPO-PE). ), Thermoplastic polyurethane (TPU), low density polyethylene (LDPE), ethylene vinyl acetate resin (EVA), high density polyethylene (HDPE), medium density polyethylene (MDPE), fiber reinforced vulcanized rubber (EPDM-R), fiber Examples thereof include reinforced vinyl chloride resin (PVC-R).

  In the present embodiment, the water shielding sheet 2 is made of, for example, polyethylene (low density polyethylene (LDPE), high density polyethylene (HDPE)), or heat fusion rubber (olefin thermoplastic rubber (TPO-PP)). It is made of material.

The protective mat 4 is in the form of a sheet made of a short fiber nonwoven fabric, a long fiber nonwoven fabric, a repellent felt, a woven fabric, or the like, and a plurality of protective mats are provided so as to cover the entire surface of the water shielding sheet 2. 4 is arrange | positioned at the upper part of the water-impervious sheet | seat 2, and it joins integrally watertight by heat sealing | fusion or thermocompression bonding in the state in which the edge part of the adjacent protection mat 4 was piled up.
Examples of the material for the nonwoven fabric and the anti-felt felt constituting the protective mat 4 include synthetic fibers such as polyester, polypropylene, acrylic, and vinylon.

  Each protective mat 4 has a peripheral portion 5 integrally joined to the upper part of the water shielding sheet 2 via a joining auxiliary material 8, and thereby a space 9 sealed between each protective mat 4 and the water shielding sheet 2. Are formed, and spacer members 3 for holding the inside of each space 9 in a bag shape are interposed in each space 9.

  The joining auxiliary material 8 is in the form of a film containing the same material as the water shielding sheet 2, and is well known to the joint portion 5 of each protective mat 4 with the water shielding sheet 2 as shown in FIGS. 2 and 3. The joint portions 5 of the protective mats 4 are integrally joined to the water shielding sheet 2 by thermal fusion or thermocompression bonding.

  As a method of integrally providing the joining auxiliary material 8 in the joint portion 5 of each protection mat 4 with the water shielding sheet 2, for example, an adhesive is applied to the joint portion 5 of each protection mat 4 with the water shielding sheet 2, There is a method in which the joining auxiliary material 8 is disposed on the adhesive, and the joining auxiliary material 8 is integrally joined to each protective mat 4 by heating and pressurizing between the joining auxiliary material 8 and each protective mat 4. Can be mentioned.

  In the present embodiment, the joining auxiliary material 8 is made of polyethylene (low density polyethylene (LDPE), high density polyethylene (HDPE)), or heat fusion rubber (olefin heat It is made of a plastic rubber (TPO-PP) material.

  By joining the joint portions 5 of the respective protection mats 4 to the water shielding sheet 2 through the joining auxiliary material 8 including the same material as the water shielding sheet 2, the joint portions 5 of the respective protection mats 4 and the water shielding sheet 2 are joined. Between the protective mats 4 and the water shielding sheet 2, thereby forming a sealed space 9.

As shown in FIG. 6, each protective mat 4 is composed of an upper mat 6 disposed on the spacer member 3 and a side mat 7 disposed between the upper mat 6 and the water shielding sheet 2. The upper mat 6 and the side mat 7 are integrally joined by heat fusion or thermocompression bonding, and the joint 5 of the side mat 7 and the water shielding sheet 2 are joined via a joining auxiliary material 8. Alternatively, they may be joined together by heat fusion or thermocompression bonding. In this case, the joining auxiliary material 8 may be integrally provided in advance in the joint portion 5 between the side mat 7 and the water shielding sheet 2.
In addition, since the upper mat 6 and the side mat 7 are made of the same material, it is of course possible to easily and reliably join them by thermal fusion or thermocompression bonding without interposing a joining auxiliary material 8 between them. It is.

The joining auxiliary material 8 may be provided integrally with the joining portion 5 of the protective mat 4 by a method as shown in FIGS. 4 and 5.
In the method shown in FIG. 4, the joining auxiliary material 8 is integrally provided in the joint portion 5 of the protective mat 4 by impregnating the joint portion 5 of the protective mat 4 with the joining auxiliary material 8 by a known impregnation method. Then, the joint 5 of the protective mat 4 is heat-sealed or thermocompression-bonded to the water shielding sheet 2 through the impregnated joining auxiliary material 8 so that the joint 5 of the protective mat 4 is uniform with a predetermined joint strength. Are integrally joined to the water shielding sheet 2.

  In the method shown in FIG. 5, the joining auxiliary material 8 is integrally provided by sewing at the joint portion 5 of the protective mat 4 with the water-impervious sheet 2, and the joining auxiliary material 8 is provided integrally by sewing. Then, the joint portion 5 of the protective mat 4 is heat-sealed or thermocompression-bonded to the water shielding sheet 2 so that the joint portion 5 of the protective mat 4 is uniformly joined to the water shielding sheet 2 with a predetermined joining strength.

  That is, the fibers of the joining auxiliary material 8 are made to penetrate between the front and back surfaces of the joint portion 5 of the protective mat 4 and entangled with the fibers of the joint portion 5 by sewing, and a part of the fibers of the joining auxiliary material 8 is joined to the protective mat 4. It is exposed from the surface of the part 5. In this state, the joint portion 5 of the protective mat 4 is brought into close contact with the water shielding sheet 2, and the joint portion 5 of the protective mat 4 is heated and pressurized between the joint portion 5 of the protective mat 4 and the water shielding sheet 2. By melting and solidifying the fiber portion of the bonding auxiliary material 8 exposed on the surface of 5, the bonding portion 5 of the protective mat 4 is integrally bonded to the water shielding sheet 2 via the bonding auxiliary material 8. .

  As the sewing, for example, in the process of manufacturing the protective mat 4 made of long fibers, short fibers, or repellent felt, the protective mat 4 is entangled with the fibrous matting auxiliary material 8 by the needle punching method. The method of providing integrally in the junction part 5 of this is mentioned.

  Note that the joining auxiliary material 8 may be provided integrally with at least the joint 5 of the protective mat 4 with the water shielding sheet 2 in any method of thermal fusion, thermocompression bonding, impregnation, and sewing. You may comprise so that it may provide in the whole protection mat 4 not only the junction part 5 with the water-impervious sheet 2. Further, the joining auxiliary material 8 is not limited to the method shown in FIGS. 3 to 5, and may be provided integrally with at least the joint portion 5 of the protective mat 4 with the water shielding sheet 2 by another known method.

The spacer member 3 has a plate-like shape formed from a resinous sponge-like material having a high porosity, an entangled material, etc., and the space 9 is kept in a bag shape by the spacer member 3, The protective mat 4 is prevented from coming into close contact with the water shielding sheet 2.
The spacer member 3 may be interposed as necessary, and the protective mat 4 is directly impermeable to water without interposing the spacer member 3 between the impermeable sheet 2 and the protective mat 4. It may be laminated on the upper part of the sheet 2.

  Each void 9 is connected to an injection pipe (not shown) that leads to an injection facility outside the landfill section 15, and a filler can be injected into the void 9 through the injection pipe. . The filler is not particularly limited as long as it has a function capable of closing the damaged portion when the water shielding sheet 2 or the protective mat 4 is damaged, and various water-stopping agents are used. Can do. By filling the space 9 with the filler via the injection pipe, the filler is injected into the gap of the spacer member 3 and the entire space 9 is filled with the filler, and the water shielding sheet 2 or protection The damaged part of the mat 4 is closed.

Next, the construction method of the water shielding structure 1 according to the present embodiment configured as described above will be described.
First, a plurality of water-impervious sheets 2 having a predetermined thickness, width and length are laid on the inner surface 16 of the landfill section 15 so as to cover the entire inner surface 16 of the landfill section 15 of the waste disposal site. The edges of the water-impervious sheet 2 are joined together by heat fusion, thermocompression bonding, or the like, and the entire inner surface 16 of the landfill section 15 is water-tightly covered with the plurality of water-impervious sheets 2.

  Next, a first protective mat 4a having a predetermined thickness, width, and length is arranged on the upper portion of the water shielding sheet 2 with the spacer member 3 interposed therebetween, and the first protective mat 4a is used by using a known heat fusion apparatus or thermocompression bonding apparatus. The joint 5 at the peripheral edge of one protective mat 4a is integrally joined to the water shielding sheet 2 side by thermal fusion or thermocompression bonding, and is sealed between the first protective mat 4a and the water shielding sheet 2. A space 9 is formed, and the spacer member 3 is enclosed in the space 9. In this case, since the joining auxiliary material 8 including the same material as that of the water shielding sheet 2 is integrally provided at the joint portion 5 of the first protective mat 4a, the protective mat 4 is provided via the joining auxiliary material 8. The joint 5 can be uniformly and tightly joined to the water-impervious sheet 2 side with a predetermined joint strength over the entire circumference, and is securely sealed between the first protective mat 4a and the water-impervious sheet 2. A void 9 can be formed.

  Next, the second protective mat 4b is disposed on the upper portion of the water-impervious sheet 2 adjacent to the first protective mat 4a via the spacer member 3, and the edge of the second protective mat 4b is placed on the first protective mat. Polymerization is performed on the upper portion of 4a, and the superposed portion of the first protective mat 4a and the second protective mat 4b is bonded by heat fusion or thermocompression bonding using a known heat fusion apparatus or thermocompression bonding apparatus. The joining portion 5 at the peripheral edge portion of the second protective mat 4b (excluding the overlapping portion with the first protective mat 4a) is integrally joined to the water shielding sheet 2 side by thermal fusion or thermocompression bonding, and the second A sealed space 9 is formed between the protective mat 4 b and the water shielding sheet 2, and a spacer member is enclosed in the space 9.

  Also in this case, since the joining auxiliary material 8 including the same material as that of the water shielding sheet 2 is integrally provided at the joint portion 5 of the second protective mat 4b, the second auxiliary mat 4b is connected to the second protective mat 4b via the joining auxiliary material 8. The joint 5 of the protective mat 4b can be joined to the water shielding sheet 2 side with a predetermined joining strength uniformly and water-tightly over the entire circumference, and between the second protective mat 4b and the water shielding sheet 2. It is possible to form the void 9 that is reliably sealed.

  Next, the third protective mat 4c is disposed on the upper part of the water-impervious sheet 2 adjacent to the second protective mat 4b via the spacer member 3, and the edge of the third protective mat 4c is placed on the second protective mat. 4b is superposed on the upper portion of 4b, and the overlapped portion of the second protective mat 4b and the third protective mat 4c is bonded together by heat fusion or thermocompression bonding using a known heat fusion apparatus or thermocompression bonding apparatus. The joint portion 5 at the peripheral edge portion of the third protective mat 4c (excluding the overlapping portion with the second protective mat 4b) is integrally joined to the water shielding sheet 2 side by thermal fusion or thermocompression bonding. A sealed space 9 is formed between the protective mat 4 c and the water shielding sheet 2, and the spacer member 3 is enclosed in the space 9.

  Also in this case, since the joining auxiliary material 8 including the same material as the water shielding sheet 2 is integrally provided at the joint portion 5 of the third protective mat 4c, the third auxiliary mat 4c is provided with the third material via the joining auxiliary material 8. The joint 5 of the protective mat 4c can be joined to the water shielding sheet 2 side uniformly and tightly over the entire circumference with a predetermined joining strength, and between the third protective mat 4c and the water shielding sheet 2 It is possible to form the sealed space 9 with certainty.

  In this way, a plurality of protective mats 4 (first protective mat 4a, second protective mat 4b, third protective mat 4c,. Are joined together one after another, and the entire water shielding sheet 2 is covered with a plurality of protective mats 4 (first protective mat 4a, second protective mat 4b, third protective mat 4c,...) A sealed space 9 is formed between the protective mat (the first protective mat 4a, the second protective mat 4b, the third protective mat 4c,...) And the water shielding sheet 2, respectively.

  And each injection | pouring pipe | tube (not shown) which leads to the injection | pouring equipment outside the landfill division 15 is connected to each cavity 9, respectively, It comprises so that a filler can be inject | poured in each cavity 9 via this injection pipe, A leakage detection electrode (not shown) is attached to each protection mat (first protection mat 4a, second protection mat 4b, third protection mat 4c,...), And this leakage detection electrode is used as the landfill section 15. Connect to an external water leak detector.

  In this way, a plurality of detection sections 10 partitioned by the protective mat 4 (first protective mat 4a, second protective mat 4b, third protective mat 4c,. By forming, the presence or absence of water leakage for each detection section 10, that is, the water shielding sheet 2 or the protective mat 4 (first protective mat 4a, second protective mat 4b, third protective mat 4c,...) It becomes possible to detect breakage and the like.

  In the water-impervious structure 1 according to this embodiment configured as described above, when the water-impervious sheet 2 and the protective mat 4 made of a different material are joined to the upper part of the water-impervious sheet 2, A joining auxiliary material 8 containing the same material as that of the water shielding sheet 2 is integrally provided in advance at the joint portion 5 with the water sheet 2, and the peripheral portion 5 of the protective mat 4 is connected to the water shielding sheet 2 through the joining auxiliary material 8. Therefore, the protective mat 4 and the water-impervious sheet 2 which are different materials can be joined using a heat fusion device or a thermocompression bonding device.

  Therefore, since the joining work of the protective mat 4 and the water shielding sheet 2 can be performed efficiently, the time and labor required for the construction of the water shielding structure 1 can be reduced, and the construction cost can be greatly reduced. it can.

  Moreover, since the protective mat 4 and the water-impervious sheet 2 can be bonded using a heat-sealing device or a thermocompression bonding device, the two can be bonded uniformly over the whole with a predetermined bonding strength, A void 9 that is securely sealed by the protective mat 4 can be formed in the upper part of the water-impervious sheet 2.

  In the above description, the case where the water-impervious structure 1 according to the present embodiment is applied to the inner surface 16 of the landfill section 15 has been described, but although not shown, the landfill of the waste in the landfill section 15 is completed. The water-impervious structure 1 according to the present embodiment may be applied to the surface of the waste later, and in this case, of course, the same effects can be obtained.

It is the schematic sectional drawing which showed the whole one Embodiment of the water-impervious structure by this invention. It is the elements on larger scale of FIG. It is an enlarged view of the A section of the protection mat of FIG. It is the elements on larger scale which showed the modification of the protection mat. It is the elements on larger scale which showed the modification of the protection mat. It is the partial expanded sectional view which showed the modification of the water-impervious structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water-blocking structure 2 Water-blocking sheet 3 Spacer member 4 Protective mat 5 Joint part (peripheral part)
6 Upper mat 7 Side mat 8 Joining auxiliary material 9 Empty space 10 Detection section 15 Landfill section 16 Inner surface

Claims (4)

It is constructed on the surface of the target area for water shielding, and has a water shielding structure for shielding the target area for water shielding,
A water-impervious sheet laid on the surface of the water-impervious object, and laminated on the surface of the water-impervious sheet. A water-proof sheet and a protective mat made of a different material to form two sealed voids,
Provided integrally by pre- impregnating a joining auxiliary material containing the same material as the water-impervious sheet in a joint part of at least the water-impermeable sheet of the protective mat
A water shielding structure, wherein a joint portion of the protective mat is integrally joined to the water shielding sheet through the impregnated joining auxiliary material. It is constructed on the surface of the target area for water shielding, and has a water shielding structure for shielding the target area for water shielding,
A water-impervious sheet laid on the surface of the water-impervious object, and laminated on the surface of the water-impervious sheet. A water-proof sheet and a protective mat made of a different material to form two sealed voids,
A part of the fiber of the joining auxiliary material is integrally provided by tangling the fibers of the joining auxiliary material including the same material as the water shielding sheet to at least a joint portion of the protective mat with the water shielding sheet by sewing. Exposed from the surface of the joint,
A water shielding structure, wherein the joint portion of the protective mat is integrally joined to the water shielding sheet through the fibers of the joining auxiliary material entangled with each other. A water shielding sheet is laid on the surface of the water shielding target part, and a protective mat made of a material different from the water shielding sheet is laminated on the surface of the water shielding sheet, and a predetermined part of the protective mat is placed on the water shielding sheet. It is a construction method of a water shielding structure that forms at least one sealed space between the protective mat and the water shielding sheet by joining,
Provided integrally by pre- impregnating a joint auxiliary material containing the same material as the water-impervious sheet in the joint part of at least the water-impervious sheet of the protective mat, melting the joint auxiliary material impregnated in the joint part, By solidifying, the construction method of the water-blocking structure characterized in that the joint portion of the protective mat is integrally joined to the water-impervious sheet through a joining auxiliary material impregnated in the joint portion. A water shielding sheet is laid on the surface of the water shielding target part, and a protective mat made of a material different from the water shielding sheet is laminated on the surface of the water shielding sheet, and a predetermined part of the protective mat is placed on the water shielding sheet. It is a construction method of a water shielding structure that forms at least one sealed space between the protective mat and the water shielding sheet by joining,
A part of the fiber of the joining auxiliary material is integrally provided by tangling the fibers of the joining auxiliary material including the same material as the water shielding sheet to at least a joint portion of the protective mat with the water shielding sheet by sewing. Exposed from the surface of the joint,
The fiber portion of the joining auxiliary material exposed from the surface of the joining portion is melted and solidified to be integrated with the water shielding sheet via the joining aid material in which the joining portion of the protective mat is entangled with the joining portion. A construction method of a water-blocking structure characterized by joining to a water.

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