JP2003334505A - Water barrier sheet of waste disposal plant and self- repairing type water barrier sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prepare a water barrier sheet of a waste disposal plant capable of easily executing the desired water barrier sheet in a state generating no waste material while forming a plurality of bag bodies on a lower layer sheet to allow them to communicate with each other in a meandering state and achieving the reduction of a production cost and the shortening of a term of works while ensuring quality by devoting to simple work on an execution site, and a self-repairing type water barrier sheet. <P>SOLUTION: The water barrier sheet 1 of the waste disposal plant is constituted of a plurality of bag bodies each formed of a waster impermeable single lower layer sheet 2 laid so as to cover the whole region of the base surface of the waste disposal plant together with a water impermeable rectangular upper layer sheet 3 arranged on the single lower layer sheet 2, openings 8 for allowing the bags to communicate with each other at alternate diagonal positions, shape holding materials 6 arranged in the bag bodies and feed and return pipings 10 and 12 arranged to the lower layer sheet 2 with the first and final bag bodies among the bag bodies communicating with each other by the openings. The plurality of the bag bodies communicating with each other by the openings are demarcated in a predetermined direction to be formed as a plurality of demarcated regions. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-blocking sheet for a waste disposal site and a construction method thereof, and in particular, a single impermeable single-layer underlayer water shielding system that is laid over the entire base surface of a waste disposal site. By appropriately joining the upper layer impermeable sheet material cut locally on the sheet material, it is possible to easily construct the desired impermeable sheet without generating waste material. Concerning the law.

[0002]

2. Description of the Related Art In a waste disposal facility for landfilling industrial waste and general waste, a water shielding work should be performed on the bottom of the disposal facility so that leaked sewage from the disposal facility does not penetrate underground and cause environmental pollution. Although it is obligatory to carry out this method, a method of laying a soft synthetic resin or rubber type water impermeable sheet is adopted for such water impervious work. There was a risk that sewage would leak to the outside from the missing part due to damage to the water-blocking sheet that occurred inside or after landfill was completed.

In order to improve such a situation, a composite water shield having a space portion is adopted, and even when a damage occurs in the water shield, the damaged portion is repaired and shielded before the contaminated water flows out to the outside. A self-repair type waste disposal facility has been proposed that can repair water immediately and even if the same section is damaged again. (Application for Japanese Patent Application No. 11-253589) The self-repair type waste disposal facility proposed by this proposal consists of a waste disposal site excavated in a hollow shape and a management building constructed close to the disposal site. At the landfill site, a double-layered impermeable sheet filled with the liquid restoration material that composes the impermeable structure is laid and connected to each facility such as the supply management mechanism of the management building.

The water-blocking mechanism is constantly measured and monitored to maintain sound operation, and at the same time, the supply management mechanism and the like are separately measured and monitored. , Have confirmed that its quality is maintained in a normal state.

When the water blocking sheet is damaged, the liquid repairing material leaks out for self-repair and at the same time the supply management mechanism changes the liquid repairing material filled inside the water blocking sheet. By confirming as above, the supply of the liquid restoration material is ordered to support the self-repair of damage. or,
The self-repair of damage is to confirm the completion of the repair and restore the sound operation by reducing the supply amount in the supply management mechanism or the like that supplies the liquid repair material and returning to the overpressure state at the normal time.

[0006] As the material of these water-impermeable sheets, in addition to water-impermeable materials made of synthetic rubber, soft synthetic resin, or other polymeric materials, layered water-impermeable materials such as asphalt, rubber asphalt, clay lining, or roofing are used. The sheet-shaped water-impervious material that is used is used, and even with regard to the form of the water-impervious sheet, it is not a single sheet, but a general example in which it is spliced vertically and horizontally by multiple joints to form a single-layer form, and detection of a defect An example in which a water blocking sheet for a double layer is formed by joining a plurality of narrow upper layer sheets onto a wide single lower layer sheet including a mechanism for achieving the above (Japanese Patent Laid-Open No. 2-136414 and Japanese Patent No. 2960821). Japanese Patent Publication) is also proposed.

However, the cause of damage to the water-blocking sheet covers a wide range of physical and chemical damage and biological damage, and since it is difficult to completely prevent it, effective measures have not yet been established. For this reason, a technique for detecting and repairing damage to the sheet has been developed, and various proposals have been made regarding the detection method, and the technique has been put into practical use as a technique effective in terms of accuracy. , Indirect repair by injecting a chemical solution around the damaged part and direct repair of the damaged part by excavating waste, even if the damaged part of the sheet is detected early, the leachate from the waste will Since it will be repaired after it has flowed out of the waste disposal facility, environmental pollution that occurs during that period cannot be prevented. Since the leaked part was repaired, all of the injected space was solidified and the detection mechanism did not work when the next leaked water occurred in the same section.

Therefore, in order to eliminate the work of repairing the seat, a seat having a space portion is often used.
The creation of the water-impervious sheet that has a space does not cause the sewage to leak outside from the defective part due to the improper joining of the water-impervious sheets during processing, or damage to the water-impervious sheet due to external force during landfill work or after completion of landfill As described above, it is configured so that good joining can be achieved at the time of construction of the water-blocking sheet, and that uneven pressure is not applied to the upper and lower layer sheets after laying the water-blocking sheet. In many cases, a water-impervious sheet material with a shape is prepared and pasted together, or special members are used to manufacture the water-impervious sheet, which results in a rise in manufacturing costs and extension of the construction period. It had a fundamental problem.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems and proposes a solution to the problem. An impermeable single unit that is laid to cover the entire base surface of a waste disposal site. By properly joining the locally cut upper water-impervious sheet material onto the lower water-impermeable sheet material, a plurality of bags are formed on the lower layer sheet to make the desired insulation while connecting in a meandering manner. Water sheet can be easily constructed without waste material, and by concentrating on simple work at the construction site, it is possible to reduce production costs and shorten the construction period while ensuring quality, and impermeable to water at the waste disposal site. We provide sheets and self-repairing water barrier sheets.

[0010]

A water impervious sheet for a waste disposal site according to claim 1 is a water-impermeable single lower layer sheet laid over the entire base surface of the waste disposal site. And a plurality of bag bodies formed by a water-impermeable rectangular upper layer sheet arranged on a single lower layer sheet, openings that connect the bag bodies at alternate diagonal positions, shape retention arranged in the bag body It is composed of rebate piping installed on the lower layer sheet of the first bag body and the final bag body communicating with the material and the opening, and a plurality of bag bodies are formed on the lower layer sheet to meander. To form multiple bags on top of the lower layer sheet while communicating with each other, the lower layer sheet and the upper layer sheet cut at the site can be appropriately joined to easily perform construction without generating waste materials, and to simplify the construction site. Low production cost while ensuring quality by concentrating on work Thereby shortening the construction period and.

According to a second aspect of the present invention, there is provided a water impervious sheet for a waste disposal site, which is the same as the impermeable sheet for a waste disposal site according to the first aspect. It is characterized in that it is divided into a plurality of divided areas to form a plurality of divided areas, and in addition to the above-mentioned function, the formation of a plurality of divided areas is simplified.

According to a third aspect of the present invention, there is provided a water impervious sheet for a waste disposal site, wherein the water impervious sheet for a waste disposal site according to the first or second aspect is arranged on a single lower layer sheet. The shape is characterized in that the connecting two sides of the upper layer sheet are joined to a single lower layer sheet, and the other two connecting sides are joined to the adjacent upper layer sheet to form a bag body. A plurality of sectional areas parallel to a predetermined direction are formed by facilitating the formation of the opening that communicates between the bags and the arrangement of the shape-retaining material.

According to a fourth aspect of the present invention, there is provided a water impervious sheet for a waste disposal site, wherein the water impervious sheet for a waste disposal site according to the first or second aspect is disposed on a single lower layer sheet. The shape is characterized in that one side in the arrangement direction of the upper layer sheet is joined to a single lower layer sheet, and the other three sides connected to each other are joined to adjacent upper layer sheets to close both ends to form a bag. In addition to the above-mentioned function, it facilitates the formation of the opening that communicates between the bags and the arrangement of the shape-retaining material, and forms a plurality of sectional areas parallel to a certain direction by laminating a plurality of upper layer sheets. .

According to a fifth aspect of the present invention, there is provided a water impervious sheet for a waste disposal site, wherein the water impervious sheet for a waste disposal site according to the first or second aspect is arranged on a single lower layer sheet. Shape One side of the arrangement direction of the upper layer sheet is joined to the adjacent upper layer sheet, and the other three sides are joined to the single lower layer sheet while both ends are closed to form a bag. In addition to the above functions, it facilitates the formation of the opening that communicates between the bags and the arrangement of the shape-retaining material, and a plurality of divided areas parallel to a certain direction are formed by a single upper layer sheet having the same width as the lower layer sheet. Is forming.

The water shielding sheet of the waste disposal site according to the invention of claim 6 is installed as a single lower layer sheet in the water shielding sheet of the waste disposal site according to any one of claims 1 to 5. The recirculation pipe is arranged at a diagonal position with respect to the opening communicating with the plurality of bags, and in addition to the above-mentioned function, it is easy to form the meandering flow path in the divided area.

The self-repairing water-blocking sheet for a waste disposal site according to the invention of claim 7 constitutes a division area in the water-blocking sheet for a waste disposal site according to any one of claims 1 to 6. The present invention is characterized by filling a plurality of bags that are filled with a liquid restoration material that can be replenished, and in addition to the above functions, ensures self-repair with the liquid restoration material over the entire water-blocking sheet.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION The water blocking sheet for a waste disposal site according to the present invention is basically a single impermeable single lower layer sheet and a single lower layer that are laid over the entire base surface of the waste disposal site. A plurality of bags formed by a water-impermeable rectangular upper layer sheet arranged on the sheet, openings that communicate between the bags at alternate diagonal positions, a shape-retaining material and openings arranged inside the bag. It is composed of a return pipe installed on the lower layer sheet of the first bag and the final bag of the bags communicating with each other. A plurality of bags are divided into arbitrary division areas as one division area, and each division area is formed in a zigzag manner by an opening provided at a diagonal position of the partition portion of the bag body that is connected to each other. The filling liquid is made to communicate with each other so that the filling liquid can flow over the entire area.

As a result, in the water-permeable sheet according to the present invention, a plurality of bags are formed on the lower sheet, and the lower sheet and the upper sheet cut at the site are appropriately joined to each other without waste materials. We are working to reduce manufacturing costs and shorten the construction period while ensuring quality by ensuring easy construction and simple work at the construction site. less than,
An embodiment of a water-blocking sheet according to the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a first embodiment of a water-blocking sheet according to the present invention, in which a partially cutaway plan view (a) and a plan view (a) are partially enlarged cross-sectional views. It is (b).

The impermeable sheet 1 according to the present embodiment comprises a plurality of impermeable single lower layer sheets 2 and impermeable rectangular upper layer sheets 3 laid over the entire base surface of the waste disposal site. The bag body 4 is formed, and the void 5 of the bag body 4 is formed.
The shape retaining material 6 is arranged inside. The plurality of bags 4 are
It is arranged adjacently and continuously, and a plurality of divided areas 7, 7 ', 7 "are formed by dividing in a predetermined direction.

Each bag body 4 forming each divided area 7 is
Openings 8 and 8 that communicate with each other at diagonal positions are provided between the adjacent bag bodies 4, and the plurality of bag bodies 4 are provided with the openings 8.
Through the meandering through each of the divided areas 7, 7 ',
It forms a series of channels covering the entire 7 "area.

Further, a flow pipe 10 is installed on the lower layer sheet 2 of the bag body 9 at one end of the plurality of bag bodies forming each of the divided areas 7, 7 ', 7 ". A reflux pipe 12 is installed in the lower layer sheet 2 of the bag body 11 located at the other side end of each divided area 7 facing the bag body 9 at one end.

Further, the flow pipe 10 and the return pipe 12
Are arranged at the corners of the bag facing the opening 8 and together with the opening 8 form a series of meandering flow paths that cover the entire area of each of the divided areas 7, 7 ', 7 ".

With the above construction, the liquid restoration material injected from the flow pipe 10 into each divided area 7 of the waterproof sheet 1 for detecting the damaged portion of the waterproof sheet 1 is located on one side of each divided area 7. While meandering all the bag bodies 4 from the bag body 9 at the end in an alternating direction, it reaches the bag body 11 at the other end of each division area 7, and from the reflux pipe 12 provided in the bag body 11. It will be sent out and returned to the management building of the waste disposal site.

In the present embodiment, the water-impermeable lower layer sheet 2 is unwound from the rolls wound in the field and joined in a single state so that the entire bottom surface of the waste disposal site can be laid. The upper layer sheet 3 on one side is
As a plurality of rectangular sheets unrolled from the same roll, they are continuously arranged adjacent to each other in a predetermined direction, and then joined to the impermeable lower layer sheet 2 and joined to each other to form a plurality of bags. 4 is formed, and by dividing these bags, a division area 7 in a predetermined direction is formed.

In order to form the bag body 4 of the upper layer sheet 3, the two sides 13 and 14 of the upper layer sheet 3 which are connected to each other are joined to the lower layer sheet 2, and the other two sides 13 'and 1 of which are connected to each other.
4'is formed by joining adjacent upper layer sheets 3 to each other, and a part of the upper layer sheet 3 and the lower layer sheet 2 are formed while arranging a plurality of formed bag bodies 4 continuously. Partition wall 16 formed of a part of upper layer sheet 3 formed between
An opening 8 is provided in each of them to communicate with each other.

The openings 8 are provided in the partition walls 16 in the vicinity of the corners of the bags which face each other, so that the bags 8 connected to each other while corresponding to the extending direction of the divided areas 7, 7 ', 7 "are illustrated. The plurality of bag bodies 4 are arranged in diagonal positions such that they are communicated with each other through the opening 8 to form a sectioned area 7 having a series of flow paths covering the entire area in a meandering state.

Therefore, the extension direction of the divided areas 7, 7 ', 7 "is not limited to the divided area 7 → 7 as shown in the drawing.
It is also possible to extend in the direction of the divided areas 7 → 7 ′ → 7 ″, and as a result, the formation of the divided areas can be set in any direction of the water blocking sheet 1.

The bag 4 thus formed is provided with a shape-retaining material 15 in order to prevent the water-impervious sheet from being damaged by an external force during the landfilling work of waste or after the landfilling is completed. -The sewage is prevented from leaking from the outlet to the outside.

Further, the openings 8 which connect the adjacent bag bodies 4 at diagonal positions as shown in the drawing are formed in the partition wall 16 by cutting as shown in the partial sectional view of FIG. 1 (b). Yes,
The shape retaining material 15 is also inserted into the opening 8 to ensure the flow through the opening 8.

In the first embodiment of the waterproof sheet according to the present invention, the waterproof sheet is constructed as follows.

That is, in the construction of the water blocking sheet in the first embodiment, the impermeable single lower layer sheet 2 is laid so as to cover the entire base surface of the waste disposal site, and the single lower layer sheet is divided. The return pipes 10 and 12 are installed at the positions of the bag bodies arranged at both ends in the range corresponding to each division area 7.
Then, the water-impermeable rectangular upper layer sheets 3 forming the plurality of bags 4 are continuously arranged on the single lower layer sheet 2 in the direction of the division area 7 while being parallel to the arrangement direction of the upper layer sheets 3. One side 14 in the arrangement direction, which is connected to one side 13, is joined to the single lower layer sheet 2, and the shape-retaining material 6 is disposed between the upper layer sheet 3 and the single lower layer sheet 2.

After that, the opening 8 for communicating between the bags at diagonal positions while utilizing the margin of the adjacent upper layer sheet 3.
And forming the shape-retaining material 15 in the opening 8 and then connecting the other open two sides 1 of the upper layer sheet 3.
3'and 14 'are joined to the adjacent upper layer sheet 3, and thereby each divided area 7 is formed while forming a plurality of communicating bag bodies 4.

FIG. 2 shows the above-mentioned construction mode and shows the process of joining the upper layer sheet to the lower layer sheet and forming the openings in the upper layer sheet.

The impermeable single lower-layer sheet 2 is manufactured at the waste disposal site where it is constructed, and the waste material is disposed while the rolled sheet material is unwound from the roll carried into the site. It is processed into a single piece by cutting it into a predetermined shape so that it can be laid over the entire base surface of the field and joining them together.

In the laid lower layer sheet 2, the return pipes 10 and 12 are installed at the positions of the bag bodies arranged at both ends in the range corresponding to each divided area 7 to be divided. The water-impermeable rectangular upper layer sheet 3 is unidirectionally arranged on the water-impermeable single lower layer sheet 2 to form a plurality of bags 4 connected to each other, and the upper sheet is arranged. One side 13 parallel to the direction and one side 14 connected to this side and located in the arrangement direction are joined to the lower layer sheet 2.

Next, when the two connecting sides of the upper layer sheet are joined to the lower layer sheet as described above, the shape retaining material 6 is arranged between the partition walls 16 formed by joining the upper layer sheet and the lower layer sheet. Then, even if a load due to waste is applied to the finally formed bag body 4, the void 5 of the bag body 4 is maintained, and after the shape retaining material 6 is arranged. Is formed in the partition wall 16 formed in the upper layer sheet with an opening 8 communicating between the bag bodies 4.

The details of the arrangement of the shape-retaining material 6 and the formation of the opening 8 in the partition wall 16 will be described later.
When the formation of the above is completed, the other two connecting sides 13 ′ and 14 ′ of the upper layer sheet 3 are joined to the adjacent upper layer sheet 3, so that the plurality of bag bodies 4 having the shape retaining material 6 inserted therein are formed. It is formed continuously. Therefore, a series of flow paths that meander all the bag bodies 4 in the divided areas are formed in the bag bodies 4 of the divided areas 7, 7, 7.

As in the first embodiment described above, in the impermeable sheet of the waste disposal site according to the present invention, the impermeable rectangular upper layer sheet arranged in the predetermined direction on the single lower layer sheet,
Connect two sides that are connected to a single lower layer sheet and connect the other 2
By joining the edges between adjacent upper layer sheets to form a bag, a zone in any direction is formed, and the upper layer sheet cut on-site is appropriately placed on a single impermeable lower layer sheet. A plurality of bag bodies are formed on the lower layer sheet by joining, and all the bag bodies are connected in a meandering state by the openings provided in the partition walls 16 of the adjacent bag bodies, while the desired water-blocking sheet is discarded. It can be easily installed in a state where it does not occur, and by concentrating on simple work at the construction site, we have achieved manufacturing cost reduction and construction period reduction while ensuring quality.

Next, a second embodiment of the water blocking sheet according to the present invention will be described. The same parts as those in the above embodiment are represented by the same reference numerals.

FIG. 3 shows a second embodiment of the water-blocking sheet according to the present invention, and is a partially cutaway plan view (a) and a sectional view showing a partially enlarged plan view (a). It is (b). The water-blocking sheet 21 according to the present embodiment includes a plurality of bags made up of a water-impermeable single lower-layer sheet 22 and a water-impermeable rectangular upper-layer sheet 23 laid over the entire base surface of a waste disposal site. 24 is formed, and the shape-retaining material 26 is arranged in the void 25 of the bag body 24.

The plurality of bags 24 are continuously arranged adjacent to each other, and are divided in a predetermined direction to form a plurality of division areas 27, 27 ', 27 ".

Each bag body 24 forming each divided area 27 is provided with openings 8, 8 which are in communication with each other at diagonal positions between the adjacent bag bodies 24. 4 is connected in a meandering state through this opening 8 to form a series of flow paths covering the entire area of each of the divided areas 27, 27 ′ and 27 ″.

Further, in the lower layer sheet 22 of the bag body 28 at one end of each of the divided areas 27, 27 ', 27 ", the flow pipe 10 is provided.
The recirculation pipe 12 is installed in the lower layer sheet 2 of the bag body 29 located at the other end of each divided area 27 facing the bag body 28 at the one end.

With the above configuration, also in the case of the present embodiment as well, in order to detect the damaged portion of the water blocking sheet 21, each of the divided areas 27, 27 ', 2'of the water blocking sheet 21 from the flow pipe 10 is detected.
The liquid restoration material injected into the 7 "is divided into each of the divided areas 27, 2
7 ′, 27 ″ from one side bag 28 to all bags 2
While meandering 4 in alternating directions, each of the divided areas 27, 27 ',
It reaches the bag body 29 at the other end of 27 ″, is delivered from the reflux pipe 12 provided in the bag body 29, and returns to the management building of the waste disposal site.

Also in this embodiment, the impervious lower layer sheet 22 is unwound from the rolls wound at the site and joined in a single state so that the entire bottom surface of the waste disposal site can be covered. The upper sheet 23 on one side
Is continuously arranged adjacent to each other in a predetermined direction as a plurality of rectangular sheets fed from the same roll,
A plurality of bag bodies 24 are configured by joining with the water-impermeable lower layer sheet 22 and joining with each other, and by dividing these bag bodies, division regions 27, 2 in a predetermined direction are formed.
7 ', 27 "are formed.

Then, the bag body 24 made of the upper layer sheet 23
Is formed by joining one side 30 in the arrangement direction of the rectangular upper layer sheet 23 arranged on the single lower layer sheet to the single lower layer sheet 22, and connecting the other three sides 31, 32,
33 is joined to the adjacent upper layer sheet 23, and then the bag body 24 is formed by closing both ends of the upper layer sheet 34 at one end and the upper layer sheet 35 at the other end.

While the plurality of formed bag bodies 24 are continuously arranged, the partition wall 36 formed between a part of the upper layer sheet 23 and the lower layer sheet 22 is provided with the opening 8 and communicates with each other.

The openings 8 are provided at diagonal positions as shown between the bag bodies 24 that are connected in correspondence with the extending direction of the divided areas 27, 27 ', 27 ", so that the bag bodies 24 are continuous. Each of the divided areas 27, 27 ', 27 "is formed with a series of flow paths that are joined together to cover the entire area in a meandering state.

Therefore, in this embodiment, the bag bodies 24 extended in one direction are arranged in parallel to form each sectioned area. The formed bag body 24 is provided with a shape-retaining material 26 in order to prevent the water-impervious sheet from being damaged by an external force during the landfill work of waste or after the landfill is completed. I try not to let sewage leak outside.

Further, as shown in the partial sectional view of FIG. 2 (b), the opening 8 for communicating the adjacent bag bodies 4 at diagonal positions is formed by cutting the partition wall 36. Yes,
The shape retaining material 37 is also inserted into the opening 8 to ensure the flow through the opening 8. In the second embodiment of the waterproof sheet according to the present invention, the waterproof sheet is constructed as follows.

That is, in the construction of the water blocking sheet in the second embodiment, the impermeable single lower layer sheet 22 is laid so as to cover the entire base surface of the waste disposal site, and the single lower layer sheet 22 is divided. The return pipes 10 and 12 are installed at diagonal positions in the range corresponding to each divided area. Next, a direction in which the upper layer sheets 23 are arranged while the water-impermeable rectangular upper layer sheets 23 forming the plurality of bags 24 are arranged on the single lower layer sheet 22 so as to be connected to each other in the extension direction of the division area 27. While joining one side 30 parallel to the single lower layer sheet 22,
The shape-retaining material 26 is arranged between the joints between the upper layer sheet 23 and the single lower layer sheet 22.

Thereafter, the openings 8 communicating between the bags are formed at diagonal positions while utilizing the margin of the adjacent upper sheets 23, and the shape retaining material 37 is arranged in the openings 8 and then the upper sheet 23. The other three sides 31, 3 of which are open
2, 33 are joined to the adjacent upper layer sheet 23, and then the bag body 24 is formed by closing both ends of the upper layer sheet 34 at one end and the upper layer sheet 35 at the other end.

In the second embodiment of the present invention, the water blocking sheet is constructed as follows. FIG. 4 shows the above-mentioned construction form, and shows a process of joining the upper layer sheet to the lower layer sheet and forming an opening in the upper layer sheet.

The impermeable single lower-layer sheet 22 is manufactured at the waste disposal site to be constructed, and the waste material is disposed while the rolled sheet material is unwound from the roll carried into the site. It is processed into a single piece by cutting it into a predetermined shape so that it can be laid over the entire base surface of the field and joining them together.

In the laid lower layer sheet 22, the return pipes 10 and 12 are installed at diagonal positions in the area corresponding to each of the divided areas 27, and after that, a plurality of impervious sheets are provided. The rectangular upper layer sheet 23 is a water-impermeable single lower layer sheet 2 because a plurality of bag bodies 24 are connected to each other.
The upper side sheet 23 is arranged in one direction, and one side 30 located in the direction in which the upper layer sheet 23 is arranged is joined to the lower layer sheet 2.

Then, as described above,
When the side 30 is joined to the lower layer sheet 22, the shape retaining material 26 is arranged between the partition walls 36 formed by joining the upper layer sheet and the lower layer sheet, and the bag body 24 finally formed.
Even if a load due to waste is applied to the bag, the void 2 in the bag body 24
5 is maintained, and after the shape-retaining material 26 is arranged, the openings 8 that communicate between the bag bodies 4 are formed in the partition wall 36 formed in the upper layer sheet.

The arrangement of the shape-retaining material 26 and the formation of the opening 8 in the partition wall 36 will be described later. When the formation of the opening 8 is completed, the three sides 31, 32, which connect the upper layer sheet 23, are connected.
By bonding 33 to the adjacent upper layer sheet 23, a plurality of bag bodies 24 having the shape-retaining material 26 inserted therein are formed in a concatenated state, and flow paths that meander all the bag bodies 24 in alternate directions. Each divided area 27, 27 ', 27 "to be formed is formed.

As in the second embodiment described above, the impermeable sheet of the waste disposal site according to the present invention has the impermeable rectangular upper layer sheet forming a plurality of bags on the single lower layer sheet. Are connected in one direction and arranged, and one side parallel to the direction in which the upper layer sheet is arranged is joined to a single lower layer sheet, and a shape-retaining material is arranged between the joint portions, so that the bags connected to each other face each other. Alternately forming openings communicating between the bags at the corner positions, and arranging the shape-retaining material in the openings, and then joining the other three open sides of the upper layer sheet to the adjacent upper layer sheet, By closing both ends and forming a bag to form each divided area, a plurality of bags are formed on the lower layer sheet and communicated in a meandering state, while the desired water blocking sheet is generated as waste material. By doing the work easily without doing it and devoting itself to simple work at the construction site While ensuring the quality thereby shortening the reduction and construction period of the production cost.

Next, a third embodiment of the water blocking sheet according to the present invention will be described. This embodiment is the same as the second embodiment as a whole, so the second embodiment Only the part different from the form will be described.

That is, in the third embodiment of the water blocking sheet of the waste disposal site according to the present invention, one side in the direction in which the rectangular single upper layer sheet 23 arranged on the single lower layer sheet 22 is arranged. 32 is joined to the adjacent single upper layer sheet 23, and the other three connecting sides 30, 31, and 33 are joined to the single lower layer sheet 22 to form the bag body 24 that closes both ends 34, 35. However, only the single rectangular upper layer sheet is different from the second embodiment.

According to the present embodiment, a plurality of sectional areas 27, 27 ', 27 "parallel to a certain direction are formed by a single upper layer sheet having the same width as that of the single lower layer sheet 22 by the above configuration. The joining work for forming the bag body 24 is greatly reduced.

Therefore, in addition to the functions described in the first and second embodiments, the water impervious sheet of the waste disposal site according to the present invention has the formation of the openings for communicating between the bags and the arrangement of the shape retaining material. The work efficiency is improved by forming a plurality of sectional areas parallel to a certain direction by a single upper layer sheet having the same width as the lower layer sheet.

FIG. 5 shows a construction process after the upper layer sheet is partially joined on the single lower layer sheet, which will be described based on the first embodiment.

In the present construction process, as shown in FIG. 5 (a), the shape-retaining material 16 is installed between the lower portions of the partition walls 14 joined to the lower layer sheet 2, and the shape retaining material 16 is attached as shown by the arrow. The shape-retaining material 16 is inserted from the other open sides 13 'and 14'.

As shown in FIG. 5B, the bag body 4 is formed by lifting the other sides 13 'and 14' of the upper layer sheet 3 and the adjacent upper layer sheet 3 on the side where the partition wall 14 is formed upward. The upper portion 41 of the partition wall 14 is formed by joining the sheets with the sheet welding machine 40, and at the same time, processing is performed with a slight margin.

When the sheet welding machine 40 is used, the reaction force sheet 42 may be arranged on the shape-retaining material 16 installed as needed to stably install the sheet welding machine 40. it can.

FIG. 6 shows a step of forming an opening in the present embodiment, which is a sectional view (a) showing a cutting process of the opening with respect to the upper layer sheet and a sectional view of a step of installing a shape-retaining material in the formed opening ( b) is shown.

FIG. 6A is a cross-sectional view of the lower layer sheet 2, the upper layer sheet 3 and the void 5 showing the opening.

The opening is processed by using a slight margin between the upper portion 41 of the partition wall 14 and the upper layer sheet 3 in the sectional area 7 in which the shape-retaining material 6 is arranged inside the void 5. By doing so, construction is performed from the adjacent two sides 13 ', 14' of the upper layer sheet 3 which are open.

Thus, the opening 8 is cut at the upper portion 41 of the partition wall 14 formed by the upper layer sheet 3 at the upper end position of the shape-retaining material 16 so as to communicate with the adjacent bag body 4.

FIG. 6B is a cross-sectional view showing the step of inserting the shape-retaining material through the opening and installing it. The shape-retaining material 15 is installed in the opening 8.

The shape-retaining material 15 uses the shape-retaining material 6 disposed inside the bag body 4 as a guide to open the opening 8 of the partition wall 14.
Has been inserted into. For this reason, the upper layer sheet 3 in which the openings 8 are formed is configured so as to project from other portions, but since the shape-retaining materials 6 and 15 are superposed and arranged in this portion, The strength problem is solved.

Although not particularly shown, the water-blocking sheet according to the present invention formed as described above is self-filled by filling a plurality of bags constituting the divided area with a refillable liquid restoration material. It is possible to use it as a self-repairing water-blocking sheet in a restoration-type waste disposal facility.

The self-healing type waterproof sheet constructed by using the waterproof sheet according to the present invention is constantly measured and monitored to maintain sound operation, and at the same time, when the waterproof sheet is damaged. At the same time as self-repairing due to leakage of the liquid restoration material, while confirming the fluctuation of the liquid restoration material filled inside the impermeable sheet from the supply management mechanism,
By supplying a liquid restoration material to the self-repairing water-impervious sheet, it supports the self-repair of damage.

The self-repair of damage is completed by the reduction of the supply amount in the supply management mechanism or the like for supplying the liquid restoration material and the return to the overpressure state at the normal time, and the self-repair type waterproof sheet is kept healthy. It is to restore operation.

As described above, the self-repairing type water blocking sheet according to the present invention is laid as a water blocking mechanism at the waste disposal site, so that the liquid restoration material can be self-repaired to the entire area of the self-healing type water blocking sheet. We have reliably eliminated the risk of sewage leaking to the outside from the defective part due to the improper joining of the water-blocking sheets and the damage to the water-blocking sheet that occurs during or after the landfilling of waste. It avoids the problem of leaked sewage infiltrating underground and causing environmental pollution.

The water-blocking sheet and the self-repairing type water-blocking sheet for a waste disposal site according to the present invention have been described above in detail based on the above embodiments, but the present invention is not limited to these embodiments. It goes without saying that various modifications can be made without departing from the spirit of the invention.

[0079]

The water-blocking sheet of the waste disposal site according to claim 1 is provided on the water-impermeable single lower-layer sheet and the single lower-layer sheet that are laid over the entire base surface of the waste disposal site. A plurality of bags formed with a water-impermeable rectangular upper layer sheet, openings that communicate between the bags at alternate diagonal positions, a shape-retaining material arranged in the bag, and a bag that communicates with the openings. Since it is composed of the return pipes installed in the lower layer sheet of the first bag and the final bag of the body, while forming a plurality of bag bodies on the lower sheet and connecting them in a meandering manner, To form a plurality of bags on top of it, the water-blocking sheet materials cut at the site are joined appropriately to easily construct them without generating waste materials, and to ensure quality by concentrating on simple work at the construction site. The effect of being able to reduce the manufacturing cost and the construction period while aiming It is.

The water blocking sheet of the waste disposal site according to claim 2 is the same as the water blocking sheet of the waste disposal site according to claim 1, wherein a plurality of bags communicating at the openings are divided in a predetermined direction. In addition to the above-mentioned effect, there is an effect that a plurality of divided areas can be simply formed.

The water impervious sheet of the waste disposal site according to claim 3 is the water impervious sheet of the waste disposal site according to claim 1 or 2, wherein the rectangular upper layer sheet is arranged on a single lower layer sheet. In addition to the above effects, the bag body is formed by joining the two adjacent sides of the above to a single lower layer sheet and the other two adjacent sides to the adjacent upper layer sheet. This has the effect of facilitating the formation of openings communicating with each other and the arrangement of the shape-retaining material to form a plurality of sectional areas parallel to a predetermined direction.

The water impervious sheet of the waste disposal site according to claim 4 is the water impervious sheet of the waste disposal site according to claim 1 or 2, wherein the rectangular upper layer sheet is arranged on a single lower layer sheet. Since one side in the arrangement direction is joined to a single lower layer sheet, both ends are closed to form a bag body while the other three connecting sides are joined to adjacent upper layer sheets. In addition to the above effects, there is an effect that it is possible to easily form a plurality of openings that communicate between the bags and arrange the shape-retaining material to form a plurality of sectional areas parallel to a certain direction by laminating a plurality of upper layer sheets. .

According to a fifth aspect of the present invention, there is provided a water impervious sheet for a waste disposal site, wherein the water impervious sheet for a waste disposal site according to the first or second aspect is arranged on a single lower layer sheet. Shape One side of the arrangement direction of the upper layer sheet is joined to the adjacent upper layer sheet, and the other three sides are joined to the single lower layer sheet while both ends are closed to form a bag. In addition to the above functions, it facilitates the formation of the opening that communicates between the bags and the arrangement of the shape-retaining material, and a plurality of divided areas parallel to a certain direction are formed by a single upper layer sheet having the same width as the lower layer sheet. By forming it, the working efficiency can be improved.

The water impervious sheet for a waste disposal site according to claim 6 is the water impervious sheet for a waste disposal site according to any one of claims 1 to 5, wherein the recirculation pipe is installed as a single lower layer sheet. Is characterized in that it is arranged at a diagonal position with respect to the opening communicating with the plurality of bag bodies, and therefore, in addition to the above-mentioned effect, there is an effect that it is possible to easily form the meandering flow path in the divided area. .

The self-repairing water-blocking sheet of the waste disposal site according to claim 7 constitutes a division area in the water-blocking sheet of the waste disposal site according to any one of claims 1 to 6. Since it is characterized by filling a plurality of bags with a refillable liquid restorative material, in addition to the above effects, the self-healing function of the liquid restorative material can be exerted over the entire area of the waterproof sheet. .

[Brief description of drawings]

FIG. 1 is a first embodiment of a water blocking sheet for a waste disposal site according to the present invention.

FIG. 2 is a construction diagram in the first embodiment regarding the water blocking sheet of the waste disposal site according to the present invention.

FIG. 3 is a second embodiment diagram of a water blocking sheet for a waste disposal site according to the present invention.

FIG. 4 is a construction diagram of a second embodiment of a water blocking sheet for a waste disposal site according to the present invention.

FIG. 5 is an embodiment diagram of a process of installing a shape-retaining material on the water-blocking sheet.

FIG. 6 is an embodiment diagram of a process of forming an opening in the water-blocking sheet.

[Explanation of symbols]

1,21 Water barrier sheet, 2,22 Single lower layer sheet,
3,23 rectangular upper layer sheet, 4,24 bag,
5, 25 Void, 6, 26 Shape-retaining material, 7, 7 ',
7 "division area, 8 openings, 9, 11 bags, 10
Sending pipe, 12 circulating pipe, 13, 14, 13 ', 1
4'adjacent two sides, 15,37 shape retention material, 16,3
6 bulkheads, 27, 27 ', 27 "compartments, 28,
29 bag, 30 1 side, 31, 32, 33 Other 3
Edge, 34, 35 Edge upper layer sheet,

Claims (7)

[Claims] 1. A water-impermeable single lower-layer sheet laid over the entire base surface of a waste disposal site, and a water-impermeable rectangular upper-layer sheet disposed on the single lower-layer sheet. A plurality of bags, an opening communicating between the bags at alternate diagonal positions, a shape-retaining material arranged in the bag, and a first bag and a final bag of the bags communicating with the openings. A water impervious sheet at a waste disposal site that consists of repatriation pipes installed on the lower layer sheet. 2. The water impervious sheet for a waste disposal site according to claim 1, wherein a plurality of bags communicating with the opening are divided into a plurality of divided areas in a predetermined direction to form a plurality of divided areas. 3. The impermeable sheet for a waste disposal site according to claim 1, wherein the rectangular upper layer sheet arranged on the single lower layer sheet has two connecting sides joined to the single lower layer sheet. In addition, the water-impermeable sheet for a waste disposal site is characterized in that the other two adjacent sides are joined to the adjacent upper layer sheet to form a bag. 4. The impermeable sheet for a waste disposal site according to claim 1, wherein the rectangular upper layer sheet arranged on the single lower layer sheet has a single lower layer sheet on one side in the direction of arrangement. A water-impervious sheet for a waste disposal site, characterized in that the bag is formed by closing both ends while joining the other three connected sides to the adjacent upper layer sheet. 5. The impermeable sheet of a waste disposal site according to claim 1 or 2, wherein the rectangular upper layer sheet arranged on a single lower layer sheet is adjacent to one side in the arrangement direction. A water-impervious sheet for a waste disposal site, which is joined to a single lower layer sheet while joining the other three sides to a single lower layer sheet to form a bag by closing both ends. 6. The return pipe installed in a single lower layer sheet is arranged at a diagonal position with respect to an opening communicating with a plurality of bags. Impermeable sheet for the listed waste disposal sites. 7. The water blocking sheet of a waste disposal site according to any one of claims 1 to 6, wherein a plurality of bags constituting the divided areas are filled with a refillable liquid restoration material. A self-repairing impermeable sheet at a waste disposal site that is characterized by