JPH07214026A - Detecting and recovering body used for detecting and recovering water leak and water leak detecting and recovering method - Google Patents

Abstract

PURPOSE:To provide a detecting and recovering body used for detecting and recovering water leak capable of securely recovering the water leak by sufficiently filling an injection material into a leakage are and to prevent adverse effect caused by the leakage at the time of detecting the leakage of a waterproof sheet laid on a waste disposal terminal plant and recovering the leakage part. CONSTITUTION:The detecting and recovering body 1 used at the time of detecting the water leak from the waterproof sheet laid on an underground and recovering the leakage part is formed by combining at least one or more of a structural body 2 constituted of an air permeable layer 4 composed of a three-dimensional meshlike structure having a prescribed extended surface area, which is made by folding and bending plural synthetic resin filaments 3 and standing the filaments 3 in the thickness direction, at least one of an air impermeable partition 6 isolating the air permeable layer 4 and a water permeable material sticking to the bending parts of the filaments 3 and the leakage part is recovered by using the same.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detection restoration body used for detection and restoration of water leakage and a water leakage detection restoration method using the detection restoration body. More specifically, the present invention relates to a water leakage sheet laid at a waste final disposal site. The present invention relates to a detection restoration body used for water leakage detection and restoration capable of detecting water leakage and repairing a water leakage portion of a water shield sheet, and a water leakage detection and restoration method.

[0002]

2. Description of the Related Art A water-impermeable sheet made mainly of vulcanized rubber or resin is laid at a final waste treatment plant, but if the water-impermeable function is lost for some reason, it will be included in water leakage from the water-impermeable sheet. There is a serious problem that harmful components may adversely affect living environment and ecosystem.

Therefore, as an effective countermeasure against the recent problems, not only the improvement of the water-blocking sheet which can maintain the water-blocking function for a long period of time, but also the detection of water leakage from the water-blocking sheet and the water-blocking sheet in preparation for an unexpected situation A management system capable of repairing a water leakage point has been developed, and, for example, a vacuum management system has been proposed. This is to detect a change in internal pressure by partitioning a breathable mat on a water-blocking sheet, stacking a ventilation mat, enclosing each mat with a sheet, and sucking the inside of the bag with a vacuum pump. Then, as a water shielding measure for this system, first, the quality of the sucked water is inspected, and if it is confirmed that it is the leachate from the waste, the method of continuing the absorption of the leachate water and sending compressed air Therefore, the repair is performed by a method of increasing the pressure in the seat bag higher than the pressure of the leaching water, or a method of filling the injection material to block the damaged portion.

A water blocking sheet having a function of detecting water leakage is also disclosed in JP-A-5-125710.
This waterproof sheet is composed of two flexible long synthetic resin sheets and a water-permeable thin film sandwiched between them to allow water to permeate the water-permeable thin film.

[0005]

However, in the above-mentioned conventional system, the method of continuing the absorption of water and the method of sending compressed air are first aid measures as a water blocking measure after the detection of water leakage. The mainstream method is to fill the damaged parts by injecting the material. However, in this system, when a large earth pressure is applied, the deformation of the mat becomes large, and it is difficult to sufficiently fill the leaking area with the injection material.

The present invention solves such a problem, and provides a detection restoration body for use in detection and restoration of leaked water, which is capable of surely repairing the filled material by fully filling the leaking area. The purpose is to prevent the adverse effects of water leakage.

[0007]

That is, the present invention is, first of all, to detect and restore a water leak from a waterproof sheet laid on a base surface and to repair a leak location of the waterproof sheet. As a plurality of synthetic resin filaments, the synthetic resin filaments are bent back and bent, and the filaments are erected in the thickness direction, and the ventilation layer is formed of a three-dimensional net structure having a required spreading area, and at least one non-breathable partition wall that blocks the ventilation layer. And at least one structure made of a water-permeable material bonded at the bent portion of the filament.

According to a second aspect of the present invention, as a further specific structure of the detection restoration body, the ventilation layer is formed by having at least one closed chamber formed by a non-permeable partition wall. And, it is preferable that the porosity of the ventilation layer is about 70 to 90%, and that the space in which the perforated pipe is present is arranged in the ventilation layer, or the communication pipe is internally provided in the ventilation layer. There is.

Secondly, according to the present invention, in detecting a leak from a water blocking sheet laid on a base surface and repairing a leaked portion of the water blocking sheet, a ventilation layer having a three-dimensional net structure made of synthetic resin filaments. A water-permeable material is laminated on the surface of the sheet, the ventilation layer is divided into at least one closed chamber by a non-permeable partition wall, and a detection restoration body in which a perforated pipe is arranged in the ventilation layer of the closed chamber is A water-impervious layer surrounded by two water-impervious sheets, and each perforated pipe arranged in the ventilation layer of each of the above-mentioned detection and restoration bodies is connected to at least one pump by a communication pipe, and water is absorbed by the pumps to detect A leak detection and repair method for water-blocking sheets that collects water leaks in the closed chamber and injects liquid curing agent from the communication pipe through a perforated pipe into the closed chamber of the detection restoration body that has leaked water through a pump. Subjected to.

In connecting the ventilation layer of the detection restoration body, the ventilation layer of the closed chamber has a communication pipe therein, and the communication pipe is connected to a perforated pipe arranged in the ventilation layer of another closed chamber. did.

[0011]

In the detection restoration body of the present invention, a plurality of synthetic resin filaments are folded back and bent, and the ventilation layer is composed of a three-dimensional net-like structure in which the filaments are erected in the thickness direction, and at least one non-venting layer blocking the ventilation layer. Breathable partition,
Since it is made of a water-permeable material bonded to the surface of the air-permeable layer at the bent portion of the filament, it has good air permeability and compression resistance, easily absorbs water leakage, and facilitates the addition of a liquid curing agent.

Further, when the ventilation layer is divided into at least one or more closed chambers by a non-permeable partition wall and a perforated pipe is arranged in the ventilation layer of the closed chambers, in the periodic inspection of each closed chamber, Water leakage inside the closed chamber of the detection restoration body is detected by the pump from the perforated pipe, and if it is water leakage, the pump uses the same route to leak liquid hardening agent If it is fully injected into the closed chamber, it can be easily repaired.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a partially cutaway perspective view of an example of a detection restoration body of the present invention, FIG. 2 is a partially cutaway perspective view of a detection restoration body of another example of the present invention, and FIG. 3 is a detection restoration body. 6 is a perspective view of a cross section of an end portion of a perforated pipe used in FIG. 4, FIG. 4 is a cross-sectional view of a waste final treatment site using a detection restoration body, FIG. 5 is a local cross-sectional view of FIG. 4, and FIG.
7 is a plan view showing a state in which the detection restoration body of the present invention is used, FIG.
FIG. 7 is a sectional view taken along line AA of FIG. 6.

In these figures, 1 indicates a detection restoration body, and this detection restoration body 1 is at least one structure 2 or more.
The structure 2 has various types. Among them, the structure 2 shown in FIG. 1 is a ventilation made of a three-dimensional net-like structure in which a plurality of synthetic resin filaments 3 are bent back in the thickness direction at predetermined intervals and the filaments 3 are arranged in the thickness direction to stand up. A layer 4; three non-air-permeable partition walls 6 that block the air-permeable layer 4; and a water-permeable material 5 made of a non-woven fabric or a woven fabric attached to the surface of the air-permeable layer 4 that is the bent portion of the filament 3. A space for installing the perforated pipe 7 is provided on the surface without the partition wall 6.

In this case, two adjacent structures 2, 2
Are joined with a perforated pipe 7 sandwiched therebetween, and a joining tape 10 made of the same material as the water-permeable material 5 is attached to the joining portion 8 as shown in the figure.

Further, the other structure 2 may be one in which the entire circumference of the ventilation layer 4 is surrounded by a non-permeable partition wall 6, and in this case, the perforated pipe 7 is provided in the ventilation layer 4. There is a space that can be arranged and a through hole for inserting the perforated pipe 7 provided in the partition wall 6.

Further, as another structure 2, as shown in FIG. 2, the communication pipe 12 can be preliminarily provided in the ventilation layer 4 surrounded by the non-permeable partition wall 6. The communication pipe 12 is connected to the perforated pipe 7 or another communication pipe 12.

In the structure of the detection restoration body, the ventilation layer 4 is provided.
Is made of synthetic resin such as polyethylene, polypropylene, polyamide, polyester, acrylic, and has a thickness of 0.5.
˜2.0 mm of the plurality of filaments 3, particularly the plurality of monofilaments 3 in the thickness direction between the water-permeable materials 5 are bent in a U shape and bent back, and the filaments 3 are arranged so as to stand up in the thickness direction. It is a mat structure having a three-dimensional net structure of 50 mm. Since the plurality of filaments 3 are arranged in the thickness direction, the ventilation layer 4 has a high compression resistance strength and a high porosity (a ratio in which spaces exist). The compressive strength is 40 tons / m ² or more, preferably 50 to 60 tons / m ² , and it becomes difficult to withstand earth pressure unless the compressive strength is 40 tons / m ² or more. Of course, the filament standing direction is not always regular, and in some cases it may be irregular such that adjacent bent filaments are intertwined.

The porosity of the ventilation layer 4 is 70 to 90.
%It has become. If the porosity is less than 70%, it becomes difficult to immediately inject the liquid curing agent from the communicating pipe to restore it. On the other hand, if the porosity is more than 90%, the compressive strength becomes small and deformation occurs. It will be easier.

The porosity is a value (%) obtained by subtracting the volume occupied by the filament 10 from the volume of the three-dimensional network structure, and then subtracting the volume of the three-dimensional network structure.

Further, the water-permeable material 5 arranged on the surface of the ventilation layer 4 is a filter which surely allows only the water leaked from the water-blocking sheet to pass to the ventilation layer 4 without passing dusts such as powder or particles. A non-woven fabric or a woven fabric having a thickness of 1.0 to 7.0 mm is used. Nonwoven fabric is made of synthetic fibers such as polyethylene, polypropylene, polyamide, polyester, acrylic, etc. and cotton fibers, and the basis weight is usually 100-
It is 700 g / m ² .

On the other hand, in the case of woven cloth, plain weave, twill weave, etc. are used, and one to plural layers are laminated.

Next, the manufacturing method of the structure 2 as described above is as follows.
A plurality of synthetic resin filaments 3 are arranged in parallel in the width direction at intervals on one of the water-permeable materials 5, and a forming plate having wavy unevenness is held at a predetermined temperature and pressed from above. Thus, the filament 3 is folded back and bent at a predetermined interval, and the other water permeable material 5 is heat-fused and bonded thereon.

After cutting the obtained molded body into a predetermined width and length, the periphery of the breathable layer 4 is made of a non-breathable synthetic resin such as polyethylene, polypropylene, polyamide, polyester, acrylic, etc., and has a thickness 2 The partition wall 6 is formed by surrounding it with a plate-shaped body of about 7 mm and adhering it to the water-permeable material 5. Rather, before adhering the water-permeable material 5 to the molded body,
After cutting into a length, the plate-like body may be placed and the water-permeable material 5 may be attached thereto.

The perforated pipe 7 is a cylindrical body made of synthetic resin and having a circular cross section, as shown in FIG. 3, and has a plurality of through holes 14 in its side wall. This through hole 14
It serves as a portion for absorbing water leakage in the ventilation layer 4 and also serves as a portion for injecting a liquid curing agent which is a repairing agent.

A method of using the above-described detection restoration body will be described below with reference to FIGS.

In these figures, the detection restoration body 1 is used for the water-impervious layer 16 laid over the bottom surface, side surfaces of the waste final disposal site, and the surface of the base 15 at the top end. Impermeable layer 1
6 is protected by upper and lower sand layers 17, 17, and a waste material 18 is placed on the upper sand layer 17.

A sewage collecting pipe 19 for discharging rainwater and the like is embedded in the upper sand layer 17, and a drain pipe 20 is also embedded in the ground 15 for inspecting the quality of groundwater.

The water-blocking layer 16 has a structure in which the perimeter of the detection restoration body 1 is surrounded by two upper and lower water-blocking sheets 21 and 21 (see FIGS. 5 and 7), and at least one of these blocks is one block unit. It has been laid over.

As shown in FIG. 7, the detection restoration body 1 is a combination of two structures 2 and forms one closed chamber 23, and a through hole 14 is formed in the joint portion 8 of the ventilation layer 4. There is a tubular perforated pipe 7 that has. Further, in another detection restoration body 1, as shown in FIG. 6, the perforated pipe 7 and at least one communication pipe 12 are present in the closed chamber 23. A plurality of these detection restoration bodies 1 are laid as shown in FIG. 6, and each perforated pipe 7 is connected to a communication pipe 12 and connected to a pump 25 capable of absorbing and injecting water.

The detection restoration body 1 may be laminated in plural layers such as 2-3 layers.

Then, in FIG. 6, the pump 25 sucks the inside of each closed chamber 23 in a regular inspection. If the leaked water is absorbed, the leaked water is stored in the recovery tank 26. If you confirm that the sucked water is the leachate from the waste,
Immediately operating the pump 25, the closed chamber 2 in which the liquid hardening agent in the storage tank 27 leaks from the same communication pipe 12
3 is filled and the inside of the ventilation layer 4 is filled and repaired.

The water shield sheet 21 used to surround the detection restoration body 1 is a vulcanized rubber sheet of EPDM, IIR, etc., a rubber sheet laminated with a non-woven fabric, high density, medium density, low density polyethylene, ethylene vinyl acetate. A copolymer, polypropylene, a graft-modified polyolefin-based elastomer or the like is used, but it is not particularly limited.

The liquid curing agent used here is a liquid having good fluidity and slowly solidifying at room temperature, and the monomer or prepolymer undergoes a solidifying reaction at room temperature with water or another curing agent. For example, a hydrophobic isocyanate compound, urethane resin such as hydrophilic polyurethane, epoxy resin containing a curing agent such as fatty acid amine, alicyclic polyamine, polyamidoamine, water glass (sodium silicate), acrylic acid NaHSO ₄ , A metal salt such as magnesium sulfate, aluminum sulfate, sodium hydrogen carbonate and potassium hydrogen carbonate, and a curing agent such as a metal oxide such as magnesium oxide and aluminum oxide.

The monomer or prepolymer may be stored in the storage tank 27 in advance, but may be added immediately before restoration. Further, the curing agent is put into the storage tank 27 when the closed chamber is repaired.

[0037]

INDUSTRIAL APPLICABILITY As described above, according to the present invention, a plurality of synthetic resin filaments are folded back and bent, and the ventilation layer of a three-dimensional network structure in which the filaments are erected in the thickness direction, and a non-circle surrounding the ventilation layer. Since the detection restoration body is composed of the air-permeable partition wall and the water-permeable material bonded to the surface at the bent portion of the filament, the air permeability can be improved and the compression resistance can be improved, and the leakage of water can be prevented. It has a remarkable effect that water is easily absorbed and a liquid curing agent can be easily added.

In particular, when the detection restoration body in which the ventilation layer is divided into at least one or more closed chambers by a non-permeable partition wall and the perforated pipe is arranged in the ventilation layer of the closed chambers, each closed chamber is used. In the regular inspection of, the water leak is detected from the perforated pipe by the water leak pump inside the closed chamber in the detection restoration body, and if it is a water leak, the liquid hardening agent is leaked using the same route by the pump. It has the effect of being able to fully inject and repair it in the closed chamber in the detection repair body.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an example of a detection restoration body according to the present invention.

FIG. 2 is a partially cutaway perspective view showing another example of the detection restoration body according to the present invention.

FIG. 3 is a perspective view of a cross section of an end portion showing a perforated pipe used for a detection restoration body.

FIG. 4 is a cross-sectional view of a final waste disposal site using a detection restoration body.

5 is a partially enlarged cross-sectional view of FIG.

FIG. 6 is a plan view showing a state in which the detection restoration body of the present invention is used.

7 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 1 detection restoration body 2 one structure of detection restoration body 3 synthetic resin filament 4 ventilation layer 5 water permeable material 6 partition wall 7 perforated pipe 8 joint part 8'pipe installation space 12 communication pipe 14 through hole 15 base 16 water shield layer 21 Impermeable sheet 23 Closed room 25 Pump

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masataka Inagawa 4-1-2-1, Hamazoe-dori, Nagata-ku, Kobe City Mitsuboshi Belt Co., Ltd. (72) Inventor Toshihiko Aga 4-1-2-1, Hamazoe-dori, Nagata-ku, Kobe Mitsuboshi Belt Co., Ltd. (72) Inventor Takeshi Tanaka 12-23 Miyamachi, Izumiotsu-shi, Osaka Tanaka Uchi (72) Inventor Masatoshi Tanaka 12-23 Miyamachi, Izumiotsu-shi, Osaka Tanaka Uchi (72) Inventor Keiichi Kurihara Osaka 12-23 Miyamachi, Izumiotsu-shi Tanaka, Inc.

Claims (8)

[Claims] 1. A detection / repair body for detecting water leakage from a water-blocking sheet laid on the lower ground and repairing a water-blocking portion of the water-blocking sheet, wherein a plurality of synthetic resin filaments are folded back and bent. A ventilation layer formed of a three-dimensional network structure having a required spread size in which the filament is erected in the thickness direction, at least one non-breathable partition wall that blocks the ventilation layer, and the filament is provided on the surface of the ventilation layer. A detection and restoration body used for detection and restoration of water leakage, which is configured by combining at least one or more structures made of a water-permeable material bonded at a bent portion. 2. A detection / repair body for use in detecting water leakage from a water blocking sheet laid on the lower ground and repairing a water leak location of the water blocking sheet, wherein a plurality of synthetic resin filaments are folded back and bent. A ventilation layer composed of a three-dimensional net-like structure having a required spread size in which the filament is erected in the thickness direction, a non-breathable partition wall surrounded by the ventilation layer, and a bending of the filament on the surface of the ventilation layer. A detection and restoration body used for detection and restoration of water leakage, which is configured by combining at least one or more structures made of a water-permeable material bonded together in a section. 3. The breathable layer has at least one closed chamber defined by a non-breathable partition.
Alternatively, a detection restoration body used for detection detection of water leakage according to 2. 4. The ventilation layer of the detection restoration body has a porosity of 70 to 90.
%. The detection restoration body used for detection detection restoration of water leakage according to claim 1, 2 or 3, which has a percentage. 5. The detection restoration body used for the detection restoration of water leakage according to claim 1, 2, 3 or 4, wherein a space in which the perforated pipe is present is arranged in the ventilation layer of the detection restoration body. 6. The detection restoration body used for the detection restoration of water leakage according to claim 1, 2, 3 or 4, wherein a communication pipe is present in the ventilation layer of the detection restoration body. 7. A method for detecting water leakage from a water blocking sheet laid on the lower ground to repair the water leaking point of the water blocking sheet, wherein a water-permeable material is laminated on the surface of the ventilation layer having a three-dimensional net structure made of synthetic resin filaments. The air-permeable layer is divided into at least one closed chamber by a non-air-permeable partition, and the detection restoration body in which a perforated pipe is arranged in the air-permeable layer of the closed chamber is surrounded by two water-blocking sheets. As a water-impermeable layer, each perforated pipe arranged in the ventilation layer of each detection restoration body is connected to at least one pump by a communication pipe, and water is absorbed by the pump to collect water leakage in the closed chamber of the detection restoration body. A method for detecting and repairing water leakage of a water-blocking sheet, comprising injecting a liquid curing agent from a communication pipe through a perforated pipe into a closed chamber of a detection repairing body in which water leakage has occurred, using a pump. 8. The water impermeable sheet according to claim 7, wherein the ventilation layer of the closed chamber of the detection restoration body has a communication pipe therein, and the communication pipe is connected to a perforated pipe arranged in the ventilation layer of another closed chamber. Water leak detection and repair method.