JP4038095B2 - Water impervious sheet for water surface landfill site and air venting method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention divides sheet piles, caisson levees, rubble-type sloping levee etc. around landfill sites such as the sea by landfill revetment, and prevents outflow of sewage from inside the section to the outside of the section as a water surface landfill disposal site The present invention relates to a water impervious sheet for a water surface landfill site and a method for venting the water impervious sheet.
[0002]
[Prior art]
In conventional water surface landfill sites, sheet piles, caisson levees, rubble-type sloping embankments, etc. are provided around the planned disposal site to divide the site and lay a water shielding sheet on the revetment wall and bottom. Waste is dumped in the compartment so that internal sewage does not flow out of the compartment.
[0003]
The waterproof sheet used at the water surface landfill site is pre-joined and widened at the factory and brought to the site where the water surface landfill site is laid, but due to restrictions on transportation and workability, the entire landfill site It is not usually possible to make a single sheet of water-impervious sheet that only covers the surface.
[0004]
Therefore, it is necessary to join the water shielding sheets at the laying site, but it is difficult to join the water shielding sheets in water. Therefore, spread the impermeable sheet that is large enough to be laid in a certain wide area of the disposal site while floating on the water surface, join the impermeable sheets together, submerge them in water at once and fix the impermeable sheet in place The method is taken.
[0005]
The water shielding sheet used here is made of elastomer, and the water shielding sheet itself has a specific gravity enough to sink in the water, so a float was attached and floated as a means to float on the water surface. If the water shielding sheets are joined together in the state and the float is removed, the water shielding sheets will naturally sink, but separate means will be required to sink efficiently.
[0006]
As a means of efficiently sinking the water shielding sheet, a tube body that can contain air or a weight is attached to the water shielding sheet as a float, and when the water shielding sheet floats on the water surface, air is sealed in the tube body to When the sheet is submerged, there is one in which the water shielding sheet can be submerged by extracting air from the tube body and then filling the tube body with a weight body such as mortar (see Patent Document 1, for example).
[0007]
In addition, when the water-impervious sheet is partially doubled and used as a housing part in which air or a weight body can be put between the double sheets, the water-impervious sheet is floated on the surface of the water. When encapsulating and sinking the water-impervious sheet, there is a type in which the tube body is filled with a weight such as mortar and then the water-impervious sheet can be submerged (for example, Patent Document 2). reference.).
[0008]
[Patent Document 1]
JP 2002-126683 A
[Patent Document 2]
JP 2002-159930 A
[0009]
[Problems to be solved by the invention]
However, the tube body and the housing part provided on the water-impervious sheet are filled with air to float the water-impervious sheet on the surface of the water, and after the air is removed, the weight is filled, but the air is sucked and removed. In addition, the space inside one of the tubes and the space inside the housing are sucked and crushed due to the suction of the air, and the air existing in the other space can be sucked and extracted. It may become difficult and the water shielding sheet may not be sunk well. Further, if air remains in the space, there is a problem that it is difficult to fill the filling body without a gap.
[0010]
In consideration of the above-described problems, the present invention completely evacuates the air enclosed in the container, and fills the container without any gaps so that it can be spread without any wrinkles. It aims at providing the water-impervious sheet for field and the air venting method of the water-impervious sheet.
[0011]
[Means for Solving the Problems]
  The water-impervious sheet for a water surface landfill disposal site according to claim 1 of the present invention is a water-impermeable sheet for a water surface landfill disposal site in which a water-impervious elastomer water-impervious sheet is laid in a landfill revetment constructed on the water surface. BecauseFor containing air and fillerA container and a container for removing air enclosed in the container;ArrangedIs placedSkyWith venting meansThe The container is provided at one end in the longitudinal direction of the container, and a supply port for taking in and out the air and the filler into the container and the other container provided at the other end opposite to the one end are adjacent to each other. A connection port for connecting to the body, and the air venting means is arranged to connect the supply port and the connection port, and both ends thereof are connected to the supply port and the connection port. Each is located outside the container.
[0012]
  According to this configuration,For containing air and fillerTo contain the container and the air enclosed in the container,ArrangedIs placedSkyThe water-impervious sheet is provided with air-extracting means, encloses the air in the container, and spreads in a state where the water-impervious sheet is floated. It is possible to remove the air, fill the containing body with the filling body, make the containing body act like a support, and submerge the water-impervious sheet in a spread state without wrinkles. In other words, when the air is extracted from the container as in the conventional case, the space of one of the containers to be sucked is crushed and it is difficult to remove the air existing in the other space. Can be prevented by. Therefore, the container can be filled with the filler without any gap, and the water shielding sheet can be expanded without any wrinkles.
[0013]
  The water-impervious sheet for water surface landfill disposal site according to claim 2 is the method according to claim 1.,in frontThe air venting means may be any one or a combination of a perforated tube, a mesh tube, a solid mesh mat, an embossed mat, and a grooved mat.
[0014]
According to such a configuration, air enclosed in the container is completely sucked by using any one or a combination of a porous tube, a mesh tube, a solid mesh mat, an embossed mat, and a grooved mat as the air vent means. Can be pulled out. Therefore, the container can be filled with the filler without any gap, and the water shielding sheet can be expanded without any wrinkles.
[0015]
  Claim3The water impervious sheet for landfill disposal site according to claim 1Or 2The air venting means is connected by a connecting pipe.
[0016]
According to such a configuration, the air venting means arranged in each container can be connected by a connecting pipe, so that air can be sealed into each container from one supply point, and the enclosed air is also sucked from the supply point. Can be removed reliably. Moreover, a filling body can be filled from the one supply location.
[0017]
  Claim4The method for removing air from a water-impermeable sheet for a landfill disposal site is to vent the water-impermeable sheet for a landfill disposal site by laying a water-impervious elastomeric impermeable sheet in a landfill revetment built on the water surface. BecauseFor containing air and fillerA container and the container for venting air enclosed in the container;WithinArrangedSkyWith venting meansThe container is provided at one end in the longitudinal direction, and a supply port for taking air and filler into and out of the container, and the container provided adjacent to the other end opposite to the one end. A connection port for connecting to the body, and the air venting means is arranged to connect the supply port and the connection port, and both ends thereof are connected to the supply port and the connection port. Each located outside the containerA water-impervious sheet is first drawn out to the water surface in a state in which air is enclosed in the container, and the water-impervious sheet is spread in a floating state, and then the air in the container is vented through the air venting means. It is what.
[0018]
  According to this method,For containing air and fillerTo contain the container and the air enclosed in the container,ArrangedIs placedSkyThe water-impervious sheet is provided with air-extracting means, encloses the air in the container, and spreads in a state where the water-impervious sheet is floated. It is possible to remove the air, fill the containing body with the filling body, make the containing body act like a support, and submerge the water-impervious sheet in a spread state without wrinkles. In other words, when the air is extracted from the container as in the conventional case, the space of one of the containers to be sucked is crushed and it is difficult to remove the air existing in the other space. Can be prevented by. Therefore, the container can be filled with the filler without any gap, and the water shielding sheet can be expanded without any wrinkles.
[0019]
  Claim5The air venting method for the water impervious sheet for a landfill site according to claim 1,4In,in frontThe air venting means is any one or a combination of a perforated tube, a mesh tube, a solid mesh mat, an embossed mat, and a grooved mat.
[0020]
According to such a method, the air enclosed in the container is completely sucked by using any one or a combination of a porous tube, a mesh tube, a solid mesh mat, an embossed mat, and a grooved mat as the air venting means. Can be pulled out. Therefore, the container can be filled with the filler without any gap, and the water shielding sheet can be expanded without any wrinkles.
[0021]
  Claim6The air venting method for the water impervious sheet for a landfill site according to claim 1,4 or 5The air venting means is connected by a connecting pipe.
[0022]
According to such a method, the air venting means arranged in each container can be connected by a connecting pipe so that the air can be sealed into each container from one supply point, and the sealed air is also sucked from the supply point. Can be removed reliably. Moreover, a filling body can be filled from the one supply location.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a water shielding sheet for a water surface landfill disposal site according to the present invention, and FIG. 2 is a cross-sectional view taken along line AA in FIG. 3 is a cross-sectional view taken along line BB in FIG. A water-impervious sheet 1 shown in FIG. 3 is integrally attached to a composite sheet 5 in which a protective mat 4 is laminated on the surface thereof using an adhesive 3 or the like, and an elastomer sheet body 2. A container 6 for containing a filler and an air vent 7 disposed in the container 6 for removing air enclosed in the container 6 are provided.
[0024]
The sheet main body 2 is a part of the water-impervious sheet 1 that performs a water-blocking function. As an elastomer material, a rubber material such as ethylene propylene rubber (EPT), butyl rubber (IIR), styrene-butadiene rubber (SBR), or the like. And resin materials such as vinyl chloride (PVC), polyethylene (PE), and ethylene vinyl acetate (EVA), and thermoplastic elastomers such as olefinic thermoplastic elastomer (TPO) and thermoplastic urethane (TPU). it can. And thickness is about 1.0-5.0 mm, and when thickness exceeds 5.0 mm, the flexibility in the junction part of the water shielding sheets 1 is not preferable, and work, such as laying, becomes difficult. On the other hand, when the thickness is less than 1.0 mm, it is not preferable because sufficient strength cannot be obtained as a sheet used for landfill in water.
[0025]
The protective mat 4 is for preventing the elastomer sheet body 2 that receives an impact during construction or breaks the elastomer sheet body 2 that performs a water shielding function by contact with sharp objects such as rocks, Those having a certain degree of cushioning can be applied. Nonwoven fabrics made of materials such as polyester, polypropylene, and polyethylene having such characteristics, and open-cell foams made of materials such as polyethylene, polyurethane, and polypropylene can be applied. In addition, the fiber which comprises a nonwoven fabric can use various kinds of fibers, such as a long fiber and a short fiber.
[0026]
Further, the protective mat 4 having a thickness of about 4 to 20 mm can be used. If the thickness is 4 mm or less, the strength is insufficient in the role of protecting the sheet body 2, and if the thickness is 20 mm or more. Although it is preferable in terms of strength, it is not preferable because it is inconvenient in handling.
[0027]
The elastomer sheet body 2 and the protective mat 4 may be integrated in a factory where they are manufactured in advance, or may be bonded and integrated with an adhesive or the like at the laying site. As a means for integration, various forms such as heat fusion, adhesive, and mechanical screw fixing can be used. However, since the sheet is originally used as the water-impervious sheet 1, a through hole is formed in the sheet body 2. It is preferable to use heat fusion, an adhesive, or an adhesive tape rather than a mechanical fixing method.
[0028]
Examples of the adhesive 3 that can be used by integrating the sheet main body 2 and the protective mat 4 include butyl rubber (IIR) -based and chloroprene rubber (CR) -based rubber adhesive, which can be used as an adhesive tape. There are adhesive tapes such as butyl rubber (IIR) and PIB.
[0029]
Further, in the protective mat 4 of the present embodiment, as shown in FIG. 3, it is laminated only on one surface, but the entire area of the water shielding sheet 1 is included including the container 6 or excluding the mounting position of the container 6. It may be covered. Further, the protective mat 4 is not necessarily provided, but is provided depending on the state of the laying position, and the protective mat 4 may not be provided.
[0030]
The container 6 is attached to the composite sheet 5 in which the sheet main body 2 and the protective mat 4 are laminated and integrated along the four sides of the composite sheet 5 as shown in FIG. Installed. Thus, by arrange | positioning the accommodating body 6 in the composite sheet 5 whole region, air can be enclosed in the accommodating body 6 and the whole impermeable sheet 1 can be floated on the water surface. Moreover, the water-impervious sheet 1 can be made into a spread state without wrinkles by filling the container 6 with a filler.
[0031]
Moreover, the attachment position of the container 6 is not particularly limited, and the container 6 attached in the center of the composite sheet 5 is attached in the longitudinal direction of the composite sheet 5 or attached in the width direction of the composite sheet 5. It is also possible to apply a structure in which a similar container 6 is provided at an intermediate position between the three containers 6.
[0032]
Further, as shown in FIG. 2, the container 6 is formed in a semicircular cylindrical body 12, an attachment portion 13 that is formed on the peripheral edge of the cylindrical body 12 and is attached to the composite sheet 5, and FIG. 3. It consists of a supply port 8 and a connection port 9. In addition, the connection port 9 may be provided in the approximate center position of the longitudinal direction of the container 6 as shown in FIG.
[0033]
The container 6 is attached to the composite sheet 5 by using an adhesive tape (not shown) so that the attachment portion 13 is present between the adhesive tape and the composite sheet 5 and each container is sealed. In this way, air or a filler can be prevented from leaking out from the container 6.
[0034]
Moreover, the container 6 is not limited to the cylindrical body 12 mentioned above, For example, the tube body which sealed both ends in the state which put air in the inside described in Unexamined-Japanese-Patent No. 2002-126683 is used. It is possible to apply a container. In addition, an elastomer sheet described in Japanese Patent Application Laid-Open No. 2002-159930 can be partially made double and air or a filler can be put between the double sheets. That is, like the container 6, air is sealed to float the water shielding sheet 1, the filling body is filled and the container 6 functions like a support, and the water shielding sheet 1 is spread without wrinkles. It is good if you can.
[0035]
Moreover, the attachment of the container 6 with the adhesive tape is not particularly limited, and the container 6 can be attached with an adhesive or the like. That is, what is necessary is just to be able to affix on the composite sheet 5 reliably so that the air enclosed in the container 6 and the filling body filled may not leak. In addition, the adhesive tape and adhesive which affix the container 6 can use the thing similar to the adhesive tape and adhesive mentioned above, It does not specifically limit and should just be selected suitably by the material to bond. .
[0036]
The material used for the container 6 described above can be made of a flexible polyethylene resin, vinyl chloride resin, or the like, or a cloth-coated material that is airtight.
[0037]
Moreover, the air vent means 7 is arrange | positioned so that the supply port 8 and the connection port 9 may be connected in the longitudinal direction in the container 6, as shown in FIG. 3, and it connects to the connecting pipe 16 which connects each container 6 mutually. To reach.
[0038]
By providing the container 6 in the longitudinal direction so as to connect the connection port 9 from the supply port 8 of the container 6 in this way, the container 6 on the supply port 8 side when air is sucked out from the container 6. It is possible to prevent the inner surface 18 and the surface 19 of the composite sheet 5 from being caught and sucking the air on the connection port 9 side so as not to escape.
[0039]
Moreover, the connection pipe | tube 16 has connected the supply port 8 and the connection port 9, the supply ports 8, and the connection ports 9 of each container 6 as shown in FIG. Further, the connecting pipe 16 can be a metal pipe, a flexible pressure hose, or the like, and is not particularly limited.
[0040]
By connecting the air venting means 7 arranged in each container 6 with the connecting pipe 16 in this way, air can be sealed in each container 6 from one supply location 14 shown in FIG. Air can also be reliably sucked out of the supply point 14. Further, the filling body can be filled from the supply location 14. Therefore, operations such as air sealing, suction, and filling of the filler can be performed in one system, and workability is improved. In addition, connecting each container 6 with the connecting pipe 16 is not particularly limited, and each container 6 is provided with a supply point alone, and operations such as air sealing, suction, and filling of the filler are performed. Also good.
[0041]
Further, as the air vent means 7, any one or a combination of the perforated tube 30, the mesh tube 40, the three-dimensional mesh mat 50, the embossed mat 60, and the grooved mat 70 as shown in FIGS. 5 to 9 can be applied. . The porous tube 30 includes a pipe 31 made of metal, resin, rubber, or the like as shown in FIG. 5 and a large number of holes 32 formed on the surface of the pipe 31. Then, the air in the container 6 can be extracted from the hole 32 through the pipe 31.
[0042]
Further, the mesh tube 40 is a mesh-like pipe 41 made of metal, resin, rubber, and the like and having an opening 42 as shown in FIG. Then, the air in the container 6 can be extracted through the opening 41 through the pipe 41.
[0043]
Further, as shown in FIG. 7, the three-dimensional network mat 50 has a three-dimensional network-structured ventilation layer 52 in which a plurality of synthetic resin filaments 51 are folded and bent in the thickness direction of the filament 51, and on the front and back surfaces of the ventilation layer 52. It consists of a bonded nonwoven fabric or woven water-permeable material 53. The three-dimensional mesh mat 50 is usually 10 to 30 mm thick, 500 to 3000 mm wide, and 1000 to 6000 mm long. In the three-dimensional net-like mat 50, the ventilation layer 52 is made of synthetic resin such as polyethylene, polypropylene, polyamide, polyester, acrylic, etc., and a plurality of filaments 51 having a thickness of 0.5 to 2.0 mm, particularly a plurality of monofilaments 51 are made of a water-permeable material. 53 is a mat structure having a three-dimensional network structure having a thickness of 10 to 30 mm arranged so as to be bent and bent in a U-shape between 53 and the filament 51 to stand up in the thickness direction. Then, the air in the container 6 can be extracted from the water permeable material 53 through the ventilation layer 52.
[0044]
The compressive strength of such a three-dimensional mesh mat 50 is 20 Ton / m.²100 Ton / m²The following, preferably 40 to 100 Ton / m²More preferably, 40-60 Ton / m²And 20 Ton / m²Without the above compressive strength, it becomes difficult to withstand earth pressure. Further, the standing direction of the filament 51 is not necessarily regular, and there are cases where the adjacent bent filaments 51 are entangled with each other, and the porosity of the ventilation layer 52 is 70 to 95% under no load. . If the porosity is less than 70%, it is difficult to inject and repair the liquid curing agent. On the other hand, if the porosity exceeds 95%, the compressive strength becomes small and the film tends to be deformed. The porosity is a value (%) obtained by subtracting the volume for closing the filament 51 from the volume of the three-dimensional mesh mat 50 and dividing by the volume of the three-dimensional mesh mat 50.
[0045]
Further, the embossed mat 60 is a mat 62 made of a resin or rubber having an uneven portion 61 on the surface as shown in FIG. Then, a gap is formed between the inner surface of the container 6 and the rugged portion 61 due to the level difference of the rugged portion 61, and the air in the container 6 can be passed through the gap to be removed.
[0046]
A grooved mat 70 shown in FIG. 9 is a mat 72 made of resin, rubber or the like having a large number of grooves 71 on the surface. Then, the air in the container 6 can be passed through the groove 71 and extracted.
[0047]
By applying any one or a combination of the porous tube 30, the mesh tube 40, the three-dimensional mesh mat 50, the embossed mat 60, and the grooved mat 70 as the air vent 7 in the container 6, The air enclosed in can be completely sucked out. Therefore, the container 6 can be filled with the filler without any gap, and the water-impervious sheet can be spread without wrinkles.
[0048]
The air venting means 7 may be arranged in the longitudinal direction of the container 6 so that air can be completely removed from the container 6. The porous tube 30, the mesh tube 40, the three-dimensional mesh mat 50, and the embossed mat 60 described above. The mat is not limited to the grooved mat 70, and a mat made of a planted cloth or a nonwoven fabric can also be applied.
[0049]
Moreover, water or seawater can be applied to the filling body filled in the container 6. By filling the container 6 with water or seawater, the container 6 becomes like a support and becomes straight in the longitudinal direction of the container 6. Therefore, when the container 6 works like a support column and the water shielding sheet 1 is submerged in water, it can be submerged in a spread state without wrinkles.
[0050]
Further, water or seawater can be easily prepared, and the cost is low. Seawater can be filled into the container 6 from the sea using a pump or the like. In addition, the filling body is not limited to water or seawater, and a fluid having a specific gravity greater than that of water or seawater can be used when the water shielding sheet 1 is to be submerged faster in water. Mortar, mortar, concrete, elastic resin, etc. can be applied. In addition, when the container 6 is filled with a liquid fluid such as water or seawater, the water shielding sheet 1 can be expanded in a similar manner and can be spread without wrinkles.
[0051]
The water shielding sheet 1 as described above can enclose air from the supply port 8 of the container 6 and float the water shielding sheet 1 on the water surface. And after spreading the water-impervious sheet 1 in a floating state on the water surface and joining ends (joined parts) of similar water-impervious sheets 1 arranged at adjacent positions, the air release means 7 from the inside of the container 6 Air can be completely submerged, and the container 6 can be filled with a filler to cause the container 6 to act like a column, so that the water-impervious sheet 1 can be submerged in a spread state without wrinkles. That is, when air is extracted from the inside of the container 6 as in the prior art, the air releasing means 7 indicates that the space of one of the containers to be sucked is crushed and it is difficult to extract the air existing in the other space. Can be prevented by using Therefore, the container 6 can be filled with the filler without any gaps, and the water-impervious sheet 1 can be expanded without wrinkles.
[0052]
Then, the air venting method of the water-impervious sheet 1 will be described below while explaining the method of laying the water-impervious sheet 1 for a water surface landfill disposal site. In addition, description is abbreviate | omitted about what overlaps with the content mentioned above.
[0053]
As shown in FIG. 10, a landfill revetment such as a sheet pile, a caisson levee, a rubble-type sloped levee, etc. is constructed on the outer periphery of the water surface landfill disposal site 90 to enclose the area of the planned landfill site 20. Then, the water shielding sheet 1 is installed on the shore 22, and the water shielding sheet 1 is pulled out to the water surface 24 by using a winch 23 or the like previously installed when the outer wall 21 is constructed, and the end portion is fixed to the outer wall 21 and the water shielding sheet. 1 is submerged in water 25, and the water-impervious sheet 1 is laid along the water bottom 26 in the entire water surface landfill disposal site 20. Initially, air is enclosed in the container 6 as shown in FIG. Pull out the water-impervious sheet 1 in a state, place the water-impervious sheet 1 at a predetermined position in a state where it is floated on the water surface 24, and perform an operation of joining the end portions 27 (joint parts) of the adjacent water-impervious sheet 1. . FIG. 10 illustrates an example in which a water-impervious sheet is laid on the entire wall surface and bottom surface of the revetment. For example, when the bottom surface has sufficient water permeability such as viscous soil, A form of laying a water shielding sheet may be adopted.
[0054]
Next, the air in the container 6 is completely removed by being sucked by a suction device (not shown) through the air vent 7. That is, when suction is performed from the supply location 14 shown in FIG. 1 by the suction device, the air venting means 7 is arranged in each container 6, so that the inner surface 18 of the container 6 shown in FIG. 3 is in close contact with the surface 19 of the composite sheet 5. Instead, the air in the container 6 is sucked through the air vent 7 and completely removed.
[0055]
Then, the container 6 is filled with water or seawater as a filler, and the container 6 is made to work like a column in the longitudinal direction of the container 6, and the water-impervious sheet 1 is expanded and spread without wrinkles. In addition, the water shielding sheet 1 is submerged in the water 25. With such a method of venting the water shielding sheet 1, the water shielding sheet 1 can be laid along the bottom 26 in the entire water surface landfill disposal site 20, as shown in FIG. The suction device is a generally used vacuum pump, vacuum cleaner, or the like.
[0056]
By the air venting method of the water-impervious sheet 1 laid in the water surface landfill disposal site 20 as described above, air is enclosed in the container 6 and the water-impervious sheet 1 is spread in a floating state, and is disposed at an adjacent position. After joining the end portions 27 (joint portions) of the water-impervious sheet 1, the air is completely removed from the container 6 by the air venting means 7, and the container 6 is filled with the filler without any gaps. The water-impervious sheet 1 can be submerged in the water 25 in a state of spreading without wrinkles.
[0057]
Next, FIG. 4 shows another embodiment of the water-impervious sheet for water surface landfill disposal site according to the present invention. As shown in FIG. 4, the water-impervious sheet 80 is the same as the container 6 of the water-impervious sheet 1 described above, arranged in parallel in two rows. The container 6b to be filled is provided separately. In addition, description is abbreviate | omitted about the thing similar to the water-impervious sheet 1 mentioned above.
[0058]
And in each container 6a which encloses air, the air venting means similar to the air venting means 7 mentioned above is arrange | positioned. In addition, the supply ports 8a and 8b and the connection ports 9a and 9b are provided in the storage bodies 6a and 6b in the same manner as the supply port 8 and the connection port 9 of the above-described storage body 6, respectively. .
[0059]
Further, the accommodating bodies 6a or the accommodating bodies 6b are connected to each other by connecting pipes 16a and 16b so that the accommodating body 6a that encloses air and the accommodating body 6b that is filled with the filler are in separate systems. In this way, by connecting the containers with the connecting pipes 16a and 16b, as shown in FIG. 4, an air supply location 14a for supplying air to each container 6a and a filler for filling each container 6b with a filler. Air is sealed, sucked, and filled with a single system independent from the supply location 14b. The connecting pipes 16a and 16b are the same as the connecting pipe 16 described above.
[0060]
In this way, by arranging the containers 6a and 6b in parallel in two rows and attaching them to the entire area of the water shielding sheet 80, air is sealed in each container 6a from the air supply location 14a, and the water shielding sheet 80 is placed on the water surface. The container 6b can be filled with the filler in a state of being floated on the container. Therefore, the container 6b of the water-impervious sheet 80 can be filled with the filler on the water surface (in the air), the container 6b can act like a support, and the water-impervious sheet 80 can be spread without wrinkles. The air can be reliably removed from the container 6a by the air venting means, and the water shielding sheet 80 can be submerged in a spread state without wrinkles.
[0061]
Further, since the air can be completely removed from the container 6a of the water shielding sheet 80 in the same manner as the air venting method for the water shielding sheet 1 described above, the water shielding sheet 80 is spread on the water surface and spreads without wrinkles. Can be submerged in the water, and the water-impervious sheet 80 can be laid along the bottom of the water surface landfill site.
[0062]
【The invention's effect】
As described above, according to the present invention, the air enclosed in the container is completely drawn out through the air venting means, the filling body is filled without any gaps, and the container is made like a column in the longitudinal direction of the container. There is an effect that it can work, can spread the water-impervious sheet, can spread without wrinkles, and can be submerged in water.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a water shielding sheet for a water surface landfill site according to the present invention.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIG. 3 is a cross-sectional view taken along line BB in FIG.
FIG. 4 is a schematic configuration diagram showing another embodiment of the water-impervious sheet for a water surface landfill disposal site according to the present invention.
FIG. 5 is a schematic perspective view showing an embodiment of the air venting means arranged in the container of the water shielding sheet for a water surface landfill disposal site according to the present invention.
FIG. 6 is a schematic perspective view showing an embodiment of the air venting means arranged in the container of the water shielding sheet for water surface landfill disposal site according to the present invention.
FIG. 7 is a schematic perspective view showing an embodiment of the air venting means arranged in the container of the water-impervious sheet for water surface landfill disposal site according to the present invention.
FIG. 8 is a schematic perspective view showing an embodiment of the air venting means disposed in the container of the water-impervious sheet for a water surface landfill disposal site according to the present invention.
FIG. 9 is a schematic perspective view showing an embodiment of the air venting means arranged in the container of the water-impervious sheet for water surface landfill disposal site according to the present invention.
FIG. 10 is a schematic cross-sectional view showing a state where a water-impervious sheet for a landfill disposal site is submerged in water.
FIG. 11 is a schematic perspective view showing a state in which a water shielding sheet for a water surface landfill disposal site is floated on the water surface.
[Explanation of symbols]
1 Water shielding sheet
2 Seat body
3 Adhesive
4 Protective mat
5 Composite sheet
6 container
7 Air venting means
8 Supply port
9 Connection port
12 Tubular body
13 Mounting part
14 Supply points
16 Connection pipe
18 Inside
19 Surface
20 Water Reclamation Site
21 Exterior wall
22 shore
23 winches
24 Water surface
25 Underwater
26 Water bottom
27 End (joint)
30 perforated pipe
40 mesh tube
50 3D mesh mat
60 Embossed mat
70 Mat with groove
80 Water shielding sheet

Claims (6)

A water-impervious sheet for a landfill disposal site in which a water-impervious elastomeric water-impervious sheet is laid in a landfill revetment constructed on the water surface, a container for containing air and a filler , and the container in order to pull out the enclosed air, and an air vent means that is placed in the housing body,
The container is provided at one end in the longitudinal direction, and a supply port for taking air and filler into and out of the container, and an adjacent container provided at the other end opposite to the one end, And a connection port for connection,
The air vent is disposed so as to connect the supply port and the connection port, and both ends thereof are respectively located outside the container through the supply port and the connection port. Impermeable sheet for landfill sites. The water impervious sheet for a water surface landfill disposal site according to claim 1, wherein the air venting means is one of or a combination of a perforated tube, a mesh tube, a solid mesh mat, an embossed mat, and a grooved mat. The water impervious sheet for water surface landfill disposal site according to claim 1 or 2 , wherein the air venting means is connected by a connecting pipe. A method for venting a water-impervious sheet for a landfill disposal site in which a water-impervious elastomeric water-impervious sheet is laid in a revetment constructed on the water surface, and a container for containing air and filler , to remove air sealed in the housing body, the housing body to includes a air vent means that is placed, the container is, in該収condition is provided in the longitudinal direction of the end A supply port for taking in and out the air and the filler, and a connection port provided at the other end opposite to the one end for connecting to an adjacent container, the air vent means, A water shielding sheet, which is disposed so as to connect the supply port and the connection port, and whose both ends are respectively located outside the container through the supply port and the connection port , is first placed in the container. With air sealed Pull the plane unfolded in a state floated said water shield sheet, the water surface landfill for seepage control sheet venting method, characterized in that subsequent to removing the air in the housing body through the air vent means. 5. The water impervious sheet for water surface landfill disposal site according to claim 4 , wherein the air venting means is any one or a combination of a perforated tube, a mesh tube, a solid mesh mat, an embossed mat, and a grooved mat. Air venting method. The air venting method for a water impervious sheet for a water surface landfill disposal site according to claim 4 or 5 , wherein the air venting means are connected by a connecting pipe.

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