JPH08284438A - Method for demolishing building - Google Patents

Abstract

PURPOSE: To prevent the scattering of asbesto and fiber pieces at the time of demolition by filling the foam, which is generated by the surface active agent and the air and which has viscosity, into a building to be demolished, or directly supply the foam to a chipping or a crush part of the structural body. CONSTITUTION: The foam 13 generated by a foam generating device 10 is supplied to an inner space of a building 01 to be demolished through a foam supplying hose 11 and a nozzle part 12, and the inner space is filled with the foam, and the foam is sprayed to the surface of a structural body 02. In this case, the foam is adhered to the surface of the asbesto 03 for intrusion, and the persistence is secured by the viscosity of the foam 13 so as to restrict the put-out of foam, and the foam condition is thereby maintained. The foam 13 is supplied to the depth of the space of the building 01, and the foam 13 is intruded into the surface of the asbesto 03 by the time of demolition and chipping. The demolishing work with a chipping tool 07 is performed, and the fiber pieces of the asbesto 03 and the crushed pieces of the concrete generated with the demolition are covered with the foam 13 so as to prevent the scattering thereof to the atmospheric air. The influence to the human body of workers and passers-by can be thereby reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for dismantling a building for preventing scattering of asbestos in dismantling construction of a building or the like.

[0002]

2. Description of the Related Art Up to now, as shown in FIG.
Excavator 10 having a chiseling tool 106 at the tip of the
A method is adopted in which the structure 101 (concrete, etc.) constituting the building 100 is disassembled while being crushed and crushed by 4 or the like.

Under such circumstances, the conventional structure 1 of a building
The surface of 01 is asbestos 102 for the purpose of sound insulation and fire resistance.
In many cases, the asbestos fiber pieces 103 are scattered and float in the air along with the concrete chipping pieces that are the structures 101 accompanying the demolition work. In some cases, dismantling work is carried out while water is sprayed to the dismantled portion in order to suppress dusting of the structure 101 and the like, but scattering and dusting have not been prevented yet.

[0004]

[Problems to be Solved by the Invention] Asbestos fibers and dust are harmful to humans and damage their health when inhaled into the body. Therefore, protective measures (wearing a mask) to prevent inhalation are taken. However, there is a need for a method that is insufficient and that prevents asbestos fiber fragments from scattering during dismantling.

[0005]

The present invention provides a dismantling method for solving the above-mentioned problems, in which a foam having viscosity generated by a surfactant and air is filled inside the dismantled building or the structure thereof. The feature is that the building is dismantled by directly supplying it to the chipping and crushing parts of the body.

Regarding the supply of the foam for preventing scattering, a method is used in which the long arm of a working machine such as a hydraulic excavator is used to fill the inside of the dismantled building with a foam supply hose or to adhere it to the surface of the structure. Further, when the disintegration preventing bubbles are continuously supplied in the vicinity of the disassembling tool at the time of dismantling, the scattering preventing effect is enhanced.

[0007]

[Function] As described above, the inside and the surface of the dismantled building are filled with the foam generated from the viscous surfactant as the undiluted solution before the dismantling, and supplied to the vicinity of the dismantled part during the dismantle It is possible to wrap the asbestos fiber pieces, the concrete crushed pieces, and the glass urn generated together with bubbles and drop them on the ground without scattering them into the atmosphere.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the present invention, in which 01 is a demolished building, and the demolished building 01 is formed by a structure 02 (wall, ceiling, etc.). Moreover, asbestos materials such as asbestos materials and glass wool materials are used on the inner surface of the structure 02.
3 shows the situation in which it is sprayed.

Reference numeral 05 denotes a hydraulic excavator, which is a hydraulic excavator 0
No. 5 is equipped with a chipping tool 07 (crusher, breaker, etc.) at the end of the long arm 06,
The structure 02 of No. 1 is chipped and crushed. 0
Reference numeral 8 denotes a hydraulic excavator, which has a long arm 09 like the hydraulic excavator 05 for dismantling, and a generator 13 for generating bubbles 13 is loaded on the vehicle body to remove bubbles attached along the long arm 09. The interior of the dismantled building 01 from the nozzle portion 12 at the tip of the arm through the supply hose 11,
Bubbles 13a and 13b are supplied to the chipping portion of the chipping tool 07.

Reference numeral 14 is a surfactant supply device for generating foam, and 15 is a compressor for supplying air as well, and the foam generator 1 is provided by hoses 16 and 17, respectively.
It is supplied to 0. Under the above device configuration, the foam 13 generated by the foam generator 10 is supplied to and filled in the internal space of the dismantled building 01 through the foam supply hose 11 and the nozzle portion 12, and the surface of the structure 02 is filled. It adheres to and penetrates the surface of asbestos 03 that has been sprayed on. The bubbles 13 are viscous and adhere to the surface of the asbestos 03, but since they are persistent, they do not immediately disappear and the state of the bubbles can be maintained.

Bubbles 13 in the space of the building 01 as much as possible.
By supplying the above, it becomes possible to improve the permeation of bubbles to the surface of the asbestos 03 by the time of demolition of the site.
If the dismantling work with the chiseling tool 07 is performed under the above circumstances, the fiber pieces of asbestos 03 and the crushed pieces of concrete that is the structure 02 generated by the dismantling can be wrapped by the bubbles 13 and scattered into the atmosphere. Can be prevented.

Further, by moving the nozzle portion 12 to the chipping portion and continuously supplying the bubbles 13a, a higher scattering prevention effect can be obtained, and the asbestos fiber pieces together with the chipping pieces are wrapped in the foam. Can be dropped upwards. It should be noted that the bubbles that have fallen on the ground return to a liquid state after a long time has passed, so that there is no hindrance during the processing and transportation of the dismantled piece 04. Bubbles are generated by surfactants and air, and have a large volume when they are foamy, but when defoaming they remain as a slight liquid, leaving a large amount of water due to conventional water discharge etc. It is also convenient when handling and transporting rubble.

Further, as shown in FIG. 2, by covering the dismantled ceiling of the dismantled building 01 and the periphery of the ground contact part with the foam 13,
It is possible to prevent scattering of asbestos powder and debris that occurs when a chip or the like falls on the ground, which is more effective.

[0014]

As described above in detail with reference to the examples, in the method of dismantling a building according to the present invention, since the asbestos fiber pieces and the structure crushed pieces generated during the disassembly are wrapped in bubbles, It is possible to prevent the scattering of asbestos fiber pieces and crushed concrete pieces and their floating in the atmosphere.
The influence on the human body such as workers and passersby can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a diagram showing a disassembly work method according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a disassembly work method according to a second embodiment of the present invention.

FIG. 3 is a diagram of a conventional disassembly work method.

[Explanation of symbols]

 01 Demolished building 02 Structure 03 Asbestos 08 Hydraulic excavator 09 Long arm part 10 Foam generator 11 Foam supply hose 12 Nozzle part 13 Foam 14 Surfactant supply device 15 Compressor 16, 17 Hose

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Mihei Abe 1-1-1, Wadasaki-cho, Hyogo-ku, Kobe-shi, Hyogo Mitsubishi Heavy Industries Ltd. Kobe Shipyard

Claims (1)

[Claims] 1. A structure is dismantled by filling the inside of a dismantled building with a foam having a viscosity generated by a surfactant and air, or by directly supplying it to the chipping / crushing portion of the structure. The building demolition method.