JP6876780B1 - Asbestos-containing wall removal method and asbestos-containing wall removal system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an asbestos-containing wall removing method and an asbestos-containing wall removing system capable of reducing labor and time required for construction by improving construction efficiency. A method for removing an asbestos-containing wall is a method for removing and recovering an asbestos-containing wall W of a building B, which is sealed by an outer wall surface of the building B and a curing sheet 5. The isolation step of forming the isolated space IS, the introduction step of introducing the wet removing means 2 capable of injecting high-pressure water Wa into the isolated space IS and the suction means 4 capable of sucking the solid-liquid mixture, and the wet removing means 2 are used. A cutting step of injecting high-pressure water Wa onto the asbestos-containing wall W to scrape off the asbestos-containing wall W, and a water-containing treatment material in which the high-pressure water Wa and the scraped asbestos-containing wall W are mixed are guided to the suction means and collected. It is characterized by having a collection step of asbestos and a suction recovery step of sucking and recovering the water-containing treated material by the suction means. [Selection diagram] Fig. 1

Description

The present invention relates to an asbestos-containing wall removing method and an asbestos-containing wall removing system.

Conventionally, a method for removing harmful substances such as asbestos contained in the wall surface of a building has been invented.

Patent Document 1 describes a method for removing a covering material adhering to a wall surface or a steel frame in an elevator hoistway.

In the method for removing a covering material described in Patent Document 1, a frame having a height of one floor is assembled on a car of an elevator, and a wall surface or a steel frame having a height of one floor is covered with a cover portion and covered with the cover portion. Negative pressure is applied to the space. An operator outside the cover portion operates a tool introduced into the space covered by the cover portion through the working portion formed on the cover portion, and is attached to the wall surface or the steel frame in the hoistway of the elevator. Remove the covering material. The removed covering material is stored in a storage portion connected below the cover portion.

Japanese Unexamined Patent Publication No. 2009-11986

The method of removing the covering material described in Patent Document 1 requires re-forming the space between the cover portion and the wall surface for each work for the first floor, which is troublesome when the construction range becomes wide. Will be applied.

Based on the above circumstances, it is an object of the present invention to provide an asbestos-containing wall removing method and an asbestos-containing wall removing system that can reduce the labor and time required for construction by improving the construction efficiency.

The present invention is a method for removing and recovering an asbestos-containing wall of a building, which comprises an isolation step of forming an isolated space sealed by an outer wall surface of the building and a curing sheet. an introduction step of introducing is passed through a suction device capable of sucking the high-pressure water can be injected wet removal means and the solid-liquid mixture against the workers said isolated space from the outside of the curing sheet, outside the curing sheet A cutting step in which a worker sprays the high-pressure water onto the asbestos-containing wall using the wet removing means introduced into the isolation space to scrape off the asbestos-containing wall, and the high-pressure water and the scraped asbestos-containing wall. It is characterized by having a collection step of guiding and collecting the water-containing treated material mixed with the wall to the suction means, and a suction recovery step of sucking and collecting the water-containing treated material by the suction means. And.
Further, in the present invention, in the introduction step, a hole for penetration is formed in the curing sheet, the wet removing means and the suction means are introduced into the hole, and the hole, the wet removing means and the suction means are introduced. It may be characterized in that the gap between the two is closed.

According to the present invention, since the asbestos-containing wall is scraped off by the high-pressure water sprayed from the wet removing means in the isolated space, a wide range of asbestos-containing walls are quickly scraped off. Further, since the water-containing treatment material in which the high-pressure water and the scraped asbestos-containing wall are mixed is guided by the suction means and sucked by the suction means, a large amount of the water-containing treatment material can be quickly and surely recovered. Can be done. Therefore, in the present invention, the asbestos-containing wall can be efficiently removed, and the labor and time required for the construction can be reduced.

In the method for removing the asbestos-containing wall of the present invention, the isolated space may be subjected to negative pressure by the suction means.

According to the present invention, it is possible to prevent the asbestos-containing wall treatment material scraped off in the isolation space from scattering outside the isolation space.

In the method for removing the asbestos-containing wall of the present invention, scaffolding may be provided at intervals from the outer wall surface of the building, and the curing sheet may be fixed to the outer wall surface side of the scaffolding.

According to the present invention, the asbestos-containing wall in the high-rise part of the building can be removed, the curing sheet can be prevented from moving, and the workability is improved.

The asbestos-containing wall removing system of the present invention is an asbestos-containing wall removing system that removes and recovers an asbestos-containing wall of a building, and is a curing system that forms a sealed isolated space with the outer wall surface of the building. Receives a sheet, a wet removing means introduced into the isolated space and capable of injecting high-pressure water, and a water-containing treatment material in which the injected high-pressure water and the asbestos-containing wall cut by the high-pressure water are mixed. The curing sheet is provided with a treatment material collecting unit for collecting the water-containing processing material and a suction means for sucking and collecting the water-containing processing material introduced into the isolation space and collected in the treatment material collecting unit. The curing sheet is provided with the wet removing means. And the wet removing means introduced into the isolation space is provided on the outside of the curing sheet so as to form a hole to be opened and closed in order to introduce the suction means into the isolation space from the outside of the curing sheet. It is characterized by having a work area in which a worker who operates the suction means is arranged.

According to the present invention, the asbestos-containing wall is scraped off by the high-pressure water sprayed from the wet removing means in the space isolated by the curing sheet, so that a wide range of asbestos-containing walls is quickly scraped off. In addition, the water-containing treatment material, which is a mixture of high-pressure water and the scraped asbestos-containing wall, is guided to the suction means by the waterproof tank and sucked by the suction means, so that a large amount of water-containing treatment material can be quickly and reliably collected. It can be recovered. Therefore, in the present invention, the asbestos-containing wall can be efficiently removed, and the labor and time required for the construction can be reduced.

The asbestos-containing wall removing method and the asbestos-containing wall removing system of the present invention can reduce the labor and time required for construction by improving the construction efficiency.

It is a front view which shows the method of removing the asbestos-containing wall which concerns on one Embodiment of this invention. It is the same plan view. It is a partially enlarged view of the front view.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 3.
The asbestos-containing wall removing method and the asbestos-containing wall removing system 1 according to the embodiment of the present invention are methods and systems for cutting and removing the asbestos-containing wall of a building and further recovering the asbestos-containing wall.

1 and 2 show a step of separating the asbestos-containing wall W in the method for removing the asbestos-containing wall according to the embodiment of the present invention, a step of introducing a suction hose 4a of the water jet 2 and the vacuum car 4, and a high-pressure water Wa. The cutting process which sprays and scrapes off the asbestos-containing wall W is shown. In FIG. 1, asbestos-containing wall W provided on the outer wall surface of building B is coated with asbestos as a base on a concrete wall, and a paint is applied on the asbestos-coated surface. Therefore, when the paint is peeled off or removed, the asbestos coating layer as a base is included and removed. In addition, since asbestos is contained in the removed material, the removed material as waste is always handled with care from the time it is discharged to the time it is treated, according to laws and regulations. It is treated as "specially controlled industrial waste", so-called "special pipe". Hereinafter, each step will be described in order.

(Isolation process)
In the method of removing the asbestos-containing wall, as shown in FIGS. 1 and 2, first, the asbestos-containing wall W of the building B is covered and isolated with, for example, a vinyl sheet 5 (curing sheet) at a distance from the outer wall surface. And seal.

As shown in FIGS. 1 and 2, for example, the edge of the vinyl sheet 5 is adhered to the building B and fixed to the building B. For example, the upper end edge 5a of the vinyl sheet 5 is adhered to the upper surface of the building B, and the vinyl sheet 5 is installed so as to cover the entire outer circumference of the building B.

The portion where the vinyl sheet 5 and the building B are in close contact with each other becomes the sealing portion 5S, and imparts airtightness to the isolated space IS covered with the vinyl sheet 5. The seal portion 5S may be formed, for example, by adhering the vinyl sheet 5 and the building B with a butyl tape or the like, sandwiching the vinyl sheet 5 between the batten and the building B, and sandwiching the batten and the vinyl sheet 5. And the building B may be formed by driving nails or the like into the building B and fixing the building B.

Similarly, the lower end edge 5b of the vinyl sheet 5 is adhered to the waterproof tank 5R described later, which is installed on the lower peripheral edge of the building B. In this way, the asbestos-containing wall W of the building B is isolated.

(Introduction process)
Next, for example, an injection nozzle 2o of a water jet 2 is introduced as a wet removing means capable of injecting high-pressure water into the isolated space IS covered with the vinyl sheet 5, and as a suction means capable of sucking a solid-liquid mixture or gas, for example. The suction port 4s of the suction hose 4a of the vacuum car 4 (suction means) is introduced.

The injection nozzle 2o and the suction port 4s are introduced, for example, by incising the vinyl sheet 5 to form a hole H, and passing the injection nozzle 2o and the suction port 4s through the hole H. The suction port 4s is introduced so as to come into contact with the bottom of the waterproof tank 5R, which will be described later. The gap between the hole H and the injection nozzle 2o and the suction port 4s is closed with, for example, butyl tape or the like. The holes H for introducing the injection nozzle 2o and the suction port 4s may be formed by opening a fastener or the like provided in advance on the vinyl sheet 5.

(Cutting process)
Next, the asbestos-containing wall W of the building B is cut using the high-pressure water Wa discharged from the water jet 2.

In cutting the asbestos-containing wall W, a worker M holding the water jet 2 points the injection nozzle 2o of the water jet 2 toward the cutting target portion, and sprays high-pressure water Wa from the injection nozzle 2o toward the cutting target portion. , It is performed by cutting the asbestos-containing wall W with the pressure of high-pressure water Wa.

The high-pressure water Wa is supplied to the water jet 2 from the high-pressure water generator 3 via the high-pressure water supply hose 3a.

The injection nozzle 2o of the water jet 2 is adhered to the edge of the hole H formed in the vinyl sheet 5 via a butyl tape or the like. However, since the vinyl sheet 5 has flexibility, the injection nozzle 2o is not fixed, and the direction of the injection nozzle 2o can be freely changed by the operation of the worker M. Therefore, by forming one hole H, a wide range of asbestos-containing wall W around the hole H can be cut.

When the cutting of the asbestos-containing wall W around one hole H is completed, the worker M stops the water discharge from the water jet 2 and pulls out the injection nozzle 2o from the hole H. The hole H after the injection nozzle 2o is pulled out is closed with, for example, butyl tape.

After closing the hole H, the worker M connects the scaffolding F assembled around the building B, and the high-pressure water Wa of the water jet 2 does not reach and the asbestos-containing wall W cannot be cut. Move to.

Such an introduction process and a cutting process are repeated, and the asbestos-containing wall W of the entire building B is cut. By moving the cutting target portion of the asbestos-containing wall W from the upper side to the lower side of the building B, the asbestos-containing wall W can be efficiently cut.

(Collection process)
Next, the water-containing treatment material D in which the asbestos-containing wall W cut by the high-pressure water Wa of the water jet 2 is mixed with the high-pressure water Wa is collected.

As shown in FIG. 3, the water-containing treatment material D falls from the cutting target portion. Below the building B, a waterproof tank 5R (treatment material collecting unit) that is in close contact with the peripheral edge of the building B and is open upward along the peripheral edge of the building B is installed. The lower end edge 5b of the vinyl sheet 5 is adhered to the upper end of the outer circumference of the waterproof tank 5R without any gap. Therefore, the water-containing treatment material D that has fallen from the cutting target portion is directly or guided to the waterproof tank 5R by connecting the building B or the vinyl sheet 5 and is stored in the waterproof tank 5R.

The waterproof tank 5R may be formed, for example, by connecting a plurality of concrete blocks or U-shaped grooves to form a skeleton and applying urethane coating to the surface, or may be formed of a rubber sheet, or a semi-cracked pipe. May be formed with.

(Suction recovery process)
Next, the water-containing treatment material D stored in the waterproof tank 5R is sucked by the vacuum car 4 and recovered from the isolation space IS.

The suction port 4s of the suction hose 4a of the vacuum car 4 is introduced so as to come into contact with the bottom of the waterproof tank 5R in the introduction step. Therefore, as shown in FIG. 3, the suction port 4s is immersed in the water-containing treatment material D when the water-containing treatment material D is accumulated in the waterproof tank 5R.

By activating the vacuum of the vacuum car 4, the water-containing treatment material D accumulated in the waterproof tank 5R is sucked into the vacuum car 4 through the suction port 4s and the suction hose 4a, and is recovered from the isolation space IS.

The asbestos-containing wall removing method and the asbestos-containing wall removing system 1 of the present embodiment, which are operated with the above configuration, cut the asbestos-containing wall W by a wet removing means such as a water jet 2, and therefore have a wide range of asbestos. The contained wall W can be cut quickly. Further, the water-containing treatment material D generated by mixing the high-pressure water Wa and the scraped asbestos-containing wall W is received by the waterproof tank 5R and guided to a suction means such as the suction port 4s of the vacuum car 4 for suction. Since it is sucked by means, a large amount of water-containing treatment material is quickly recovered. Therefore, it does not take time and effort when the asbestos-containing wall W can be removed in a wide range.

Although one embodiment of the present invention has been described above, the technical scope of the present invention is not limited to the above-described embodiment, and the combination of components may be changed or each component may be changed without departing from the spirit of the present invention. Can be modified or deleted.

For example, the isolation space IS may be set to a negative pressure by using a suction means such as a vacuum car 4. By setting the isolation space IS to a negative pressure, it is possible to prevent the cut asbestos-containing wall W treatment material from scattering outside the isolation space IS. Further, by collectively performing the recovery of the water-containing treatment material D and the negative pressure of the isolation space IS by a suction means such as a vacuum car 4, the recovery means of the water-containing treatment material D and the negative pressure means of the isolation space IS are performed. It is possible to reduce the scale of the device and the cost by making one system necessary for the system.

The vinyl sheet 5 may be fixed to the scaffold F. By fixing the vinyl sheet 5 to the scaffold F, the weight of the vinyl sheet 5 can be supported, and it is possible to prevent the vinyl sheet 5 and the building B from being peeled off due to the weight of the vinyl sheet 5.

The scaffold F may not be provided. When the building B is not high or when a ladder truck is used, the asbestos-containing wall W of the entire building B can be cut even if the scaffolding F is not provided.

The waterproof tank 5R does not have to be in contact with the ground G, and may be installed on the outer periphery of the middle layer of the building B or the like.

1 Asbestos-containing wall removal system 2 Water jet (wet removal means)
2o Injection nozzle 3 High-pressure water generator 3a High-pressure water supply hose 4 Vacuum car (suction means)
4a Suction hose 4s Suction port 5 Vinyl sheet (curing sheet)
5a Upper edge 5b Lower edge 5R Waterproof tank (treatment material collection unit)
5S Seal part B Building F Scaffolding G Ground IS Isolation space M Worker W Asbestos-containing wall Wa High-pressure water

Claims (5)

A method for removing and recovering an asbestos-containing wall in a building, which is a method for removing the asbestos-containing wall.
An isolation process that forms an isolated space sealed by the outer wall surface of the building and the curing sheet,
An introduction step of introducing is passed through a suction device capable of sucking the high-pressure water can be injected wet removal means and the solid-liquid mixture against the workers said isolated space from the outside of the curing sheets,
A cutting step in which a worker outside the curing sheet sprays the high-pressure water onto the asbestos-containing wall using the wet removing means introduced into the isolation space to scrape off the asbestos-containing wall.
A collection step of guiding and collecting a water-containing treatment material in which the high-pressure water and the scraped asbestos-containing wall are mixed with the suction means
It has a suction recovery step of sucking and recovering the water-containing treatment material by the suction means.
How to remove asbestos-containing walls. Negative pressure is applied to the isolated space by the suction means.
The method for removing an asbestos-containing wall according to claim 1. Scaffolding is provided at intervals from the outer wall surface of the building.
The curing sheet is fixed to the outer wall surface side of the scaffold.
The method for removing an asbestos-containing wall according to claim 1 or 2. In the introduction step, a hole for penetration is formed in the curing sheet, and the wet removing means and the suction means are introduced into the hole.
The gap between the hole and the wet removing means and the suction means is closed.
The method for removing an asbestos-containing wall according to any one of claims 1 to 3. An asbestos-containing wall removal system that removes and recovers asbestos-containing walls in buildings.
A curing sheet that forms a sealed isolated space between the outer wall surface of the building and
A wet removing means introduced into the isolated space and capable of injecting high-pressure water,
A treatment material collecting unit that receives and stores a water-containing treatment material in which the injected high-pressure water and the asbestos-containing wall cut by the high-pressure water are mixed.
A suction means introduced into the isolated space and sucking and collecting the water-containing treated material accumulated in the treated material collecting unit is provided .
The curing sheet is provided with a hole that can be opened and closed in order to introduce the wet removing means and the suction means from the outside of the curing sheet into the isolation space.
On the outside of the curing sheet, there is a work area in which the wet removing means introduced into the isolation space and the worker operating the suction means are arranged.
Asbestos-containing wall removal system.

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