JP3381182B2 - Repair equipment for impermeable structures - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a repair device for a water-impervious structure, and more particularly to a repair device for a water-impervious structure such as a final disposal site for wastes constructed by using water-impervious sheets.

[0002]

2. Description of the Related Art At present, the construction use of a water-impervious structure using a water-impervious sheet is becoming more widespread, and countermeasures against damage to the water-impervious sheet are being emphasized. If the impermeable sheet laid along the planned impermeable surface of the structure is damaged due to some reason, prepare a repair sheet of the same quality as the impermeable sheet and cut it to a size suitable for the size of the damaged part. Generally, a method is employed in which the damaged portion is covered so as to cover the damaged portion and repaired by heat welding or adhesion. On the other hand, Japanese Patent Laid-Open No. 6-346424 proposes a method of repairing a waterproof sheet by injecting a polymerization composition as a method of overcoming the drawbacks of the above repair method.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
There are the following problems in the repair technique for the water-impervious structure described in 46424. The problems such as the danger and work complexity associated with repairing the waterproof sheet can be overcome and the damaged part of the waterproof sheet can be repaired, but the adhesion between the waterproof sheet and the repair agent is on the surface of the waterproof sheet. Remaining sand, waste,
It often happens that it becomes insufficient due to the influence of leachate. In addition, even if the selection of the repair agent is improper for the material of the water-blocking sheet, the adhesion between the sheet and the repair agent becomes insufficient, and the water blocking effect cannot be maintained for a long time.

The present invention has been made to solve the above-mentioned problems, and when the waterproof sheet and the repairing agent are adhered to each other, the influence of sand, waste, leachate, etc. remaining on the surface of the waterproof sheet is affected. It is an object of the present invention to provide a repair device that can be completely removed and subjected to an adhesive treatment.

[0005]

According to the present invention, which achieves the above objects, there is provided a collapse preventing casing which is inserted into a deposit on a water-blocking sheet to prevent the deposit from collapsing, and a collapse preventing casing which is arranged in this casing. The jet nozzle and the sand pump, and descend into the casing after the sand pump is pulled up,
A repair device for a water-impervious structure, comprising a cleaning device for cleaning the seat surface, and a tank for dropping a dissolved repair material onto the seat surface, which descends into the casing after cleaning. .

The collapse prevention casing of the present invention includes a cylindrical body on the outer periphery, a jet nozzle which can be inserted into the cylindrical body and whose position can be freely changed, a pump installation cage installed inside the casing, and a pump installation cage. It is a repair device for a water-impervious structure that is composed of a sand pump installed inside.

Further, the cleaning device of the present invention comprises a cross girder that engages with the casing, wheels provided at both ends of the cross girder, a brush movably suspended along the cross girder, and a wiper. It is a repair device for water structures.

Further, the cleaning apparatus of the present invention includes a cross beam engaged with the casing, wheels provided at both ends of the cross beam, a brush movably suspended along the cross beam, a wiping tool, and a hot air outlet. It is a repair device for water-impervious structures.

Further, the tank of the present invention comprises a rod gripping part for gripping the rod of the cleaning device, a heating device mounted on the outer periphery of the tank, a stirring device housed inside the tank, and a spherical valve mounted on the lower end of the stirring device. This is a repair device for a water-impervious structure constructed by

Further, the tank of the present invention is housed inside the tank, a rod gripping part for gripping the rod of the cleaning device, a set member mounted on the cross beam of the cleaning device, a heating device mounted on the outer periphery of the tank. A water-impervious structure composed of a stirrer and a spherical valve attached to the lower end of the stirrer, and movable in the casing with rotation of the girder of the cleaning device and movement along the girder. It is a repair device.

[0011]

DETAILED DESCRIPTION OF THE INVENTION

<A> Water-impervious structure Fig. 1 shows a model view of the water-impervious structure 2 that contains the waste 1.
, And sand on both sides or the top of the water-impervious sheet 3,
It is configured by laminating a protective layer 4 such as cohesive soil or nonwoven fabric. Therefore, the deposit on the water blocking sheet 3 is composed of the waste 1 and the protective layer 4. Reference numeral 5 denotes a damaged portion generated on the water-impervious sheet 3, and the damaged portion 5 is detected by the following damaged position detection system. As the damage position detection system, for example, a system in which a sensor arranged at a plurality of points on the water-blocking sheet 3 for detecting damage and a measuring device for measuring (monitoring) a change in electrical output of each of these sensors can be used. . Alternatively, a moisture meter may be arranged at a plurality of points on the water shield sheet 3 to detect a damaged portion of the water shield sheet 3 based on leak information, or a large number of water collecting pipes may be arranged on the water shield sheet 3 composed of two layers. However, various well-known various detection systems such as a system for detecting a damaged portion of the water blocking sheet based on the leak information flowing out from the water collection pipe can be adopted.

<B> Impermeable sheet As the impervious sheet 3, a thermoplastic elastomer sheet, a vulcanized rubber sheet, a soft vinyl chloride resin sheet,
An ethylene-vinyl acetate copolymer sheet, a high-density polyethylene sheet, a low-density polyethylene sheet, or the like can be used.

<C> Repairing Agent In the present invention, the repairing agent 6 is injected to repair the damaged portion of the waterproof sheet 3. The repairing agent 6 generally has a volume resistivity of 10 2 ohm cm or more (JISK-69
It is indispensable to use a material that has the electrical insulation property of 11 test method), has fluidity during injection, and has a water-blocking effect with cooling and solidification after injection. As the repair agent 6,
Polyolefin resin, polyester resin, polyurethane resin, vinyl acetate resin, polyamide resin, epoxy resin, polyester elastomer, polystyrene elastomer, polyurethane elastomer, polyamide elastomer, polyolefin elastomer, elastomer, rubber, asphalt, etc. Is used.

Next, an apparatus used for repair will be described. <a> Collapse prevention casing 1) Casing body The collapse prevention casing 12 is an outer plate for countering the collapse of the deposits in the surrounding area, a deposit inflow prevention attached to the lower part of the outer plate, and a water-blocking sheet 3 when reaching. Soft rubber to prevent sheet damage, multiple jet water jets that jet jet water to the bottom of the casing to promote settling of the casing,
Water pipes / lateral pipes for jetting jet water, rubber plate for enhancing the jet water jetting effect and cutting off the edge with the repair agent after the sheet repair material is put in, a holding plate for making the rubber plate removable, An inner plate to prevent sand from accumulating and remaining on the injection pipe installed inside the casing, a top plate to apply a load when the casing has settling failure, and a hanging wire to install and remove the casing. It consists of ingredients.

2) Jet injection ring Inside the collapse prevention casing 12, a jet injection ring 29 is provided.
Insert and install. This is a suspending guide that serves as a guide when inserting the nozzle group into the collapse prevention casing 12, a plurality of jet water jet outlets installed so as to face various locations in the diameter direction of the casing, and a jet water jetting outlet. It consists of a water pipe, a horizontal draw pipe, and a mounting jig for mounting a hanging wire for installation.

3) Pump installation basket Inside the jet injection ring 29, the pump installation basket 20 is further provided.
Insert and install. The installation basket 20 is composed of a joint plate that can be installed on and off the substrate and installed, a pump installation basket assembled in a basket shape and having a height higher than that of the collapse prevention casing 12, and a sand pump 13 placed therein. Placing the pump in the basket has the effect of preventing the pump from sucking up the water blocking sheet 3 at the bottom of the basket in the final excavated state. Insert the collapse prevention casing 12 when excavating the protective sand layer,
Then, the jet injection ring 29 and then the submersible sand pump are inserted. Then, jet water is ejected toward the inner surface of the casing 12 side to loosen the protective sand and turn it into a mud, and the sand is sucked and removed by the sand pump 13.

<B> Cleaning Device 14 The cleaning device 14 comprises a brush 15 and a wiping tool 16. These are suspended from a rail 30 and a guide 31 below the cross beam 21 and attached so as to be able to move laterally along the cross beam 21. The horizontal girder 21 rotates as guide wheels 32 provided at both ends thereof move on the inner surface of the casing 12. Therefore, the cleaning brush 15 and the wiping tool 16 are
Cleaning is possible from the position closest to 2 to the position furthest away. When cleaning the brush, the wiping tool 16 can be pulled up, jet water can be ejected, and the brush 15 can be vacuum-suctioned while rotating the brush 15. At the time of wiping and cleaning, the entire cleaning device 14 is pulled up to the extent that the cleaning brush 15 does not come into contact with the impermeable sheet 3, and the wiping tool is raised and lowered so as to be crimped onto the impermeable sheet 3, and the cleaning nozzle is operated. Stop rotation and jet of jet water. A hot air nozzle 17 is further attached to the cross beam 21. Hot air is jetted from this nozzle 17 to dry the water-blocking sheet 3.
An observation camera 33 is further attached to the cross beam so that the cleaning status of the surface of the water-impervious sheet 3 can be confirmed.

<C> Repairing Agent Injecting Device 1) Tank The repairing agent injecting device is composed of the tank 18 that moves up and down along the rod of the cleaning device 14 and the stirring device 22 housed in the tank. The tank 18 is a container having a cylindrical cross section for storing the repair agent, and its main structure is an inner plate having an injection opening at its lower part, an electric heater arranged around the inner plate, and a heat insulating material covering the inner plate. Tank 18 contains repair agent from room temperature up to 300 degrees Celsius
It is equipped with a function that can heat up to about ℃ and keep it warm, and a remote injection function. An electric type, an oil type, an electromagnetic type, or the like can be used as the heating device. When a repairing agent that does not require heating and melting is used, heating of the tank 18 is not necessary. Repair agent tank 1
8, the method of filling a predetermined amount using a pump,
Examples include a method in which a person directly extracts a predetermined amount of the repair agent from the container and then weighs and fills the container.

2) A top plate having an opening is attached to the upper end of the lifting / lowering function tank 18. A pull-up guide is attached around the opening on the lower surface of the top plate to prevent interference with the top plate when the stirring device 22 is pulled out. The tank 18 is moved up and down and positioned through the rod 19 of the cleaning device 14. For this purpose, a frame 27 is attached to the side surface of the tank 18, and a rod grip 25 and a set guide 26 are attached to the frame 27. The set guide 26 is the cross beam 21 of the cleaning device 14.
To fit. The tank 18 is provided with a temperature sensor for measuring the temperature for controlling the quality of the repair agent and a bolt for installing the stirring device 22 described below on the top plate of the pouring tank. Further, a hanging hook for raising and lowering the entire tank 18 is attached to the upper part of the installation frame. A set guide plate (not shown) is attached to the frame so as not to collide with the main body of the cleaning device 14 when the tank 18 is lowered to the position of the cleaning device 14.

3) Stirrer The stirrer 22 is for stirring the repair agent in the tank 18 and advancing until the repair agent is polymerized or melted to be suitable for repair, and the stirring blade 28 is rotated and stirred by a rotary motor. A closed ball 23 is attached to the lower end of the stirring device 22. The blocking ball 23 is fitted in the vicinity of the upper portion of the charging port of the tank 18 having a cylindrical cross section to prevent leakage of the repair agent until the repair agent is injected, and has a sufficient weight for blocking. The stirring blade 28 and the closed sphere 23 are integrally joined, but since the stirring blade needs to rotate and the closed sphere must be stationary, both joints are joined by the universal joint 24. Since the universal joint 24 loses its flexibility as the repair agent solidifies over time, it has a structure in which the stirring blade 28 and the closed ball 23 can be separated by screwing and can be replaced. The stirring blade 28 rotation motor is attached to the top plate that also serves as the lid of the tank 18. A center holding bearing device is attached to the top plate to prevent lateral shake due to rotation of the stirring blade 28. Further, in order to prevent vertical vibration due to rotation from causing leakage to the closed sphere 23 and stirring, The wing presser spring prevents vertical vibration. A fitting hole into which the bolt of the tank 16 is fitted to install the stirring device 22 in the tank 18 is opened in the top plate. To fill the tank 18 with the repair agent, fill the closed ball with the tank 1.
The top plate is provided with a repair agent filling port in order to perform the fitting in the vicinity of the filling port of No. 8. Further, a hanging hook is attached to the top plate in order to pull up and remove the closed sphere 23 when the repair agent is injected onto the water shield sheet 3.

[0021]

[Repair Method] Next, a method of using the repair device of the present invention will be described. <A> Excavation of waste layer etc. Excavation is performed using a well-known excavator and the waste layer 1 is excavated up to the protective layer 4 while the casing 11 is being embedded. As the excavation method, a known method such as a backhoe method or a deep foundation method can be adopted in addition to the all casing method. The excavation by the excavator ends near the boundary between the protection layer 4 and the waste layer. The excavation depth is determined by observing the design drawing of the excavation site and the properties of the excluded substances.

<B> Excavation of Protective Layer Next, the collapse prevention casing 12 is inserted, a basket-like container is installed inside the container, and a submersible pump 13 is installed inside the container. This is to prevent the surrounding protective layer 4 from collapsing into the repaired portion when excavating the protective sand. After that, the protective layer 4 is loosened with jet water inside the collapse prevention casing 12,
The jet sand is jetted to the bottom surface of the casing 12 to remove the muddy protective sand by the submersible pump 13 or the vacuum vacuum device (not shown). While continuing this work, the casing 12 is submerged and the water shielding sheet 3 is excavated.

<C> Cleaning After lifting the excavator, the cleaning device 14 is hung down,
Clean and wash the three surfaces of the water shield sheet. Cleaning water is ejected from the nozzle on the side surface of the brush 15, and the soil is continuously discharged by an exhaust pump (or a vacuum vacuum device) equipped with the brush 15. The suction port and the discharge port of the brush 15 move in the casing in the radial direction, and the supporting member itself can rotate, so that the brush 15 can move and clean the entire surface of the impermeable sheet. This device moves all over the water-blocking sheet surface and discharges and drains all the remaining sediment or waste. After cleaning, the ejection of cleaning water is stopped, and the water remaining on the upper surface of the water-impervious sheet 3 is discharged by an earth-discharging pump (or vacuum vacuum device). For the remaining small amount of water and dirt, a wiping device 16 composed of a sponge and a waste cloth is used to completely remove the water, sand and other dirt remaining on the upper surface of the water shield sheet 3. Next, hot air is blown from the hot air blowing ports 17 at 4 to 6 locations onto the upper surface of the impermeable sheet to dry and heat. The adhesive strength between the repair agent and the water-blocking sheet 3, which is applied by heating, remarkably increases. However, the heating process of the sheet surface is to increase the adhesive force between the water-blocking sheet 3 and the repair agent, and may be unnecessary depending on the condition of the repaired portion.

<D> Injecting Repair Agent After cleaning the water-impervious sheet 3, the tank 18 having the stirring blades is attached to the rod 19 of the cleaning device 14 through the gripping portion, and if necessary, on the ground in advance. Insert the funnel into the filling port opened in the stirring blade top plate to fill the heated repair agent. Polymerization of the repair agent by rotating the stirring blade while gently lowering the tank 18 along the rod 19 of the cleaning device 14 so as not to cause a large shake in the tank 18.
Alternatively, it is melted. The optimum state of the repair agent is obtained by an experiment of the relationship between the stirring time and the temperature. After descending, the set guide of the tank 18 is fitted to the cross beam 21 of the cleaning device 14. At this point, the cleaning device 14 is pulled up so that it does not come into contact with the repair agent. When installing the tank 18, the frame of the tank 18 and the horizontal position of the cross beam 21 of the cleaning device 14 are adjusted, and then the set guide plate of the tank 18 is gently lowered along the cross beam 21 of the cleaning device 14. The cleaning device 14 is fitted. The tank 18 is the cleaning device 14
When the tank 18 is swung around the rod 19 of the cleaning device 14 by driving the swivel motor of the cleaning device 14, the closed ball 23 is moved by the pulling wire of the stirring device.
Is pulled up, and the repair agent is put on and coated on the water-blocking sheet 3 dried by the hot air blowing nozzle of the cleaning device 14.
After the injection, the repair agent injection device is pulled up, and the cleaning device 14
The repair situation was observed with an observation camera attached to the. If there is spring water or the like from the damaged surface of the water shield sheet 3, slight water flow may occur in the repair agent due to vaporization of the spring due to heat of the repair agent. However, after the repair agent is solidified, the repair operation is injected into the same place several times by repeating the procedure of injecting the repair agent using the same procedure as described above to complete the repair.

[0025]

Since the present invention is an apparatus as described above, the following effects are expected. <B> The repair can be reliably performed by a simple operation of injecting a repair agent into the damaged part of the water-blocking sheet. <B> Even if waste exists in the water-impervious structure, repair work can be performed without removing a large amount of waste. Therefore, the safety of repair work is significantly improved. <C> By combining with a system that inspects the damaged part using an electric signal, it is possible to perform reliable repair, monitor repair work, and confirm completion of repair. <D> Regarding repair of the water-blocking sheet 3, immediately after removing the sand, waste, leachate, etc., which are the inhibiting factors of the repairing, by using a repair agent having the same or similar or affinity with the water-blocking sheet 3. A strong adhesive force is obtained between the water-blocking sheet 3 and the repairing agent, and a more stable water blocking effect is exhibited for a long period of time.

[Brief description of drawings]

[Fig. 1] Explanatory diagram during repair of a water-impervious structure

FIG. 2 is an explanatory diagram of a method for excavating a waste layer or the like.

FIG. 3 is an explanatory view of a collapse prevention casing.

FIG. 4 is an explanatory diagram of a state of excavating the protective layer.

[Fig. 5] An explanatory view of the excavation state of the protective layer

FIG. 6 is an explanatory diagram of a cleaning device

FIG. 7 is an explanatory view of cleaning the water blocking sheet.

FIG. 8 is an explanatory diagram of cleaning the water blocking sheet.

FIG. 9 is an explanatory diagram of cleaning the water blocking sheet

FIG. 10 is an explanatory diagram of cleaning the water-blocking sheet.

FIG. 11 is an explanatory diagram of a repair agent injection device.

FIG. 12 is an explanatory diagram of a repair agent injection device.

FIG. 13 is an explanatory diagram of a repair agent injection state.

Continuation of the front page (72) Inventor Kumi Tashiro 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo Taisei Construction Co., Ltd. (72) Seiichi Harada 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo Taisei Construction Co., Ltd. (72) Inventor Masaaki Ebihara 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo Taisei Construction Co., Ltd. (72) Toshio Tadokoro 1-12-5 Nozawa, Setagaya-ku, Tokyo (72) Inventor Kiyoyuki Ogura 2-30-15, Sakashita, Itabashi-ku, Tokyo (72) Inventor Shigeru Murata 1-7 Nakasahigaoka, Suzuka-shi, Mie (72) Inventor Shigeo Hosokawa 3-3-5, Oide, Yokkaichi-shi, Mie ( 72) Inventor Nobuyuki Urakawa 1-14-5 Ginza, Chuo-ku, Tokyo Nariwa Kiko Co., Ltd. (72) Inventor Yoshiharu Sakagami 1-14-5 Ginza, Chuo-ku, Tokyo Nariwa Kiko Co., Ltd. (56) References JP-A-6-346424 (JP, A) JP-A-4-97042 (JP, A) Actual development Sho 64-5997 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B09B 1/00 E02B 3/16 E02B 7/02

Claims (6)

(57) [Claims] 1. A collapse prevention casing which is inserted into a deposit on a water-blocking sheet to prevent the deposit from collapsing, a jet nozzle and a sand pump arranged in the casing, and a casing after the sand pump is pulled up. A cleaning device for cleaning the seat surface, and a tank for dropping the melted repair material onto the seat surface, which descends into the cleaned casing, and a cleaning device Repair device 2. A collapse prevention casing to be inserted into a deposit on a sheet, a cylindrical body on an outer periphery, a jet nozzle which can be inserted into the cylindrical body and whose position can be freely changed, and a pump installed inside the casing. The repair device for a water-impervious structure according to claim 1, comprising a mounting basket and a sand pump installed inside the pump mounting basket. 3. A cleaning device which descends into a casing after a sand pump is pulled up, includes: a cross girder engaged with the casing, wheels provided at both ends of the cross girder, a brush movably suspended along the cross girder, and The repair device for the water-impervious structure according to claim 1, which is configured by a wiper. 4. A cleaning device that descends into a casing after a sand pump is pulled up includes a cross beam engaged with the casing, wheels provided at both ends of the cross beam, a brush movably suspended along the cross beam, and a wiping off. Ingredient,
The repair device for a water-impervious structure according to claim 1, wherein 5. The tank descending into the casing after cleaning includes a rod gripping part for gripping a rod of a cleaning device, a heating device mounted on the outer periphery of the tank, a stirring device housed inside the tank, and a stirring device of the stirring device. The repair apparatus for a water-impervious structure according to claim 1, which is constituted by a spherical valve attached to a lower end thereof. 6. A tank descending into the casing after cleaning includes: a rod gripping part for gripping a rod of a cleaning device; a set member mounted on a cross beam of the cleaning device; and a heating device mounted on the outer periphery of the tank. Consists of a stirrer housed inside the tank and a spherical valve attached to the lower end of the stirrer.Moveable inside the casing as the cleaning device traverses the girder and moves along the girder. Repair device for water-impervious structure according to claim 1.