JP3590616B2 - Method of preventing fire from spreading on artificial soil and its structure - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for preventing the spread of fire of artificial soil created by various methods such as a greening method using artificial soil.
[0002]
[Prior art]
In recent years, rooftop greening of buildings and the like has been actively performed as a measure to mitigate the urban heat island phenomenon. In rooftop greening, artificial soil is often used because it is necessary to minimize the weight of the growing base to be created in order to reduce the load on the building. As such artificial soil, various organic materials generally used in revegetation works such as slopes and slopes have been actively used as suitable.
[0003]
[Problems to be solved by the invention]
However, since organic materials frequently used as artificial soil are flammable, they may be ignited by being thrown out of cigarettes or fireworks when placed under strong dry conditions. In many cases, the fire does not ignite even when ignited and the ignited artificial soil spreads like smoke, making it difficult to notice. If such a fire spread state is left, there is a possibility that the fire may progress to the building itself. In fact, in slope revegetation, there is a case of fire of a growth base using organic materials. If a fire occurs due to the artificial soil used for rooftop greening of a building in a city, not only fires in the entire building and burning to surrounding areas, but also life-threatening situations are expected. Obviously it is much more serious.
[0004]
However, at present, fires are not so frequently occurring, so that fire prevention measures caused by artificial soil are hardly taken.
[0005]
In view of this situation, the present invention provides a method for preventing the spread of fire on artificial soil, which suppresses the spread of the fire to a minimum when the spread of ignition occurs in the artificial soil formed on the roof of a building or the like, thereby preventing the spread of damage. An object is to provide a fire spread prevention structure.
[0006]
[Means for Solving the Problems]
(1) The method for preventing the spread of fire of artificial soil according to the present invention includes the steps of: providing a non-combustible artificial soil substrate extending as a continuous surface and a non-combustible insulating portion having no holes, protruding from the surface of the artificial soil substrate. A combustible artificial soil top layer is formed in a section formed by the isolation section, and an artificial soil top layer in one section is separated from the artificial soil top layer in an adjacent section by the isolation section. Is what it is.
(2) An artificial soil spread prevention structure according to the present invention includes a non-combustible artificial soil substrate extending as a continuous surface,
Protruding from the surface of the artificial soil substrate, non-flammable non-porous isolation,
Possess a flammable artificial soil top layer in a compartment formed by the isolation portion, and,
The artificial soil top layer in one section is separated from the artificial soil top layer in an adjacent section by the isolation portion .
[0007]
In the artificial soil spread prevention method of (1) and the artificial soil spread prevention structure of (2), the isolation part is installed at an arbitrary position on the surface of the artificial soil foundation, and has a plate-like, wall-like, or sheet-like shape. Any shape may be used. In addition, the isolation part may be provided integrally with the artificial soil base, or may be provided by connecting another member to the artificial soil base. In the event that fire spreads in the uppermost layer of the artificial soil created in the section formed by the isolation, the spread of the fire is prevented in the isolation.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram in a case where a roof of a building such as a building is greened by applying the artificial soil spread prevention method of the present invention. FIG. 1A is a partial side sectional view of a rooftop portion, and FIG. 1B is a plan view of a portion corresponding to FIG. 1A. The artificial soil spread prevention method according to the present invention comprises the steps of: first, installing an artificial soil substrate 11 extending as a continuous surface and a wall-shaped isolation portion 13 projecting from the surface of the artificial soil substrate 11, The artificial soil uppermost layer 12 is formed in the section formed by the portion 13. At least the artificial soil top layer 12 contains an organic material generally used in revegetation and is flammable. In this example, the isolation portion 13 is provided integrally with the artificial soil ground 11. For example, when the artificial soil foundation 11 is installed by placing concrete on the roof surface, the isolation part 13 is also constructed with the concrete at the same time. As shown in FIG. 1 (B), the isolation portion 13 in the present example has a wall shape and forms a section. These compartments are not necessarily surrounded all around by the isolation 13, but the artificial soil top layer 12 in one compartment is separated from the artificial soil top layer 12 in the adjacent compartment by the isolation 13. Separated, no direct contact. Thus, even if the uppermost layer 12 of the artificial soil in one section ignites and spreads, the spread of the fire to the adjacent section is prevented.
[0009]
In addition, in this specification, the "artificial soil foundation" includes all the components provided below the isolation part 13 and the artificial soil top layer 12 formed in the section. For example, when the isolation surface 13 and the artificial soil top layer 12 are provided on the rooftop surface of the building itself as a groundwork, a layer of concrete or the like on the roof is the “artificial soil groundwork”. In the case where a plurality of artificial soil layers are formed on the rooftop surface and the isolation portion 13 and the artificial soil uppermost layer 12 are provided thereon, the rooftop concrete layer and the plurality of artificial soil layers are referred to as an “artificial soil foundation”. It is. Furthermore, when a drainage layer or a net is provided on the roof surface, and the isolation part 13 and the artificial soil uppermost layer 12 are provided thereon, the concrete layer and the drainage layer or the net on the roof are referred to as “artificial soil foundation”. It is. As described above, when there is a layer made of artificial soil other than the artificial soil top layer 12 formed in the section formed by the isolation portion 13, those artificial soil layers are included in the “artificial soil foundation”. The reason for this definition is that the present invention aims to prevent the spread of fire from spreading on the uppermost layer 12 of the artificial soil. The artificial soil ground is basically made nonflammable.
[0010]
FIG. 2 is a schematic configuration diagram showing another embodiment to which the artificial soil spread prevention method of the present invention is applied, and is a partial side sectional view of a roof portion similar to FIG. 1 (A). In this example, the isolation part 23 is formed from a member different from the artificial soil foundation 21, and is tightly fixed on the surface of the artificial soil foundation 21 using an appropriate connector 24. The function and the function and effect of the isolation part 23 tightly fixed to the artificial soil substrate 21 are the same as those of the isolation part 13 described with reference to FIG.
[0011]
FIG. 3 is a schematic configuration diagram showing an embodiment in which the artificial soil spread prevention method of the present invention is used not for greening the roof of a building but for greening a slope. Therefore, it can be used for greening slopes such as ordinary cut surfaces, embankment slopes, natural slopes, etc., mortar spraying surfaces, concrete revetment surfaces, and the like. In FIG. 3, the isolation portion 33 and the artificial soil substrate 31 are closely attached to each other by embedding the isolation portion 33 in the artificial soil substrate 31 on the cut slope. And the artificial soil uppermost layer 32 is created in the section formed by the isolation part 33. In addition, in FIG. 3, when the artificial soil foundation 31 is a mortar surface or a concrete surface, the isolation | separation part 33 can be provided by the method of FIG. 1 or FIG. 2 mentioned above.
[0012]
Incidentally, there is a method of constructing a section for forming artificial soil similar to that of the present invention on the slope, such as a spraying framing method, which is one method of slope revegetation. Therefore, the present invention is not applied to the present invention. The method for preventing the spread of artificial soil fire according to the present invention is a technique applied to revegetation in which artificial soil has been conventionally created as a continuous surface.
[0013]
In addition, the layout of the isolated portions and the area divided by each isolated portion can be freely set according to the shape of the artificial soil ground, the possibility of fire occurrence, the minimum set area expected to prevent fire spread, and the like. The material of the isolation portion is not particularly limited as long as it is a nonflammable material such as a plate, a wall, or a sheet having no holes.
[0014]
【The invention's effect】
As described above, the method for preventing the spread of fire of artificial soil and the structure thereof according to the present invention has a fire in the uppermost layer of artificial soil by constructing the uppermost layer of artificial soil after constructing the isolation part on the ground of artificial soil. In such a case, the spread of the fire can be stopped only in the area defined by the isolation.
[0015]
Therefore, the artificial soil used for revegetation such as slopes, slopes, and rooftops can be prevented from spreading to a large fire due to mismanagement such as tobacco fire or fireworks. It is extremely useful from the viewpoint of disaster prevention.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram in the case where a roof of a building such as a building is greened by applying the artificial soil spread prevention method of the present invention. (A) is a partial side sectional view of a roof part, and (B) is a plan view of a part corresponding to (A).
FIG. 2 is a schematic configuration diagram showing another embodiment to which the artificial soil spread prevention method of the present invention is applied, and is a partial side sectional view of a roof portion similar to FIG. 1 (A).
FIG. 3 is a schematic configuration diagram showing an embodiment in which the artificial soil spread prevention method of the present invention is applied to slope greening.
[Explanation of symbols]
11, 21, 31 Artificial soil ground 12, 22, 32 Artificial soil top layer 13, 23, 33 Isolation part 24 Connector

Claims (2)

Projecting from extending to incombustible artificial soil foundation and the artificial soil underlying surface as a continuous surface, established the isolation portion having no incombustible holes, flammable artificial in a compartment formed by the isolation unit A method for preventing the spread of fire of artificial soil , comprising forming an uppermost layer of soil, wherein the uppermost layer of artificial soil in one section is separated from the uppermost layer of artificial soil in an adjacent section by the isolation portion . A non-combustible artificial soil substrate extending as a continuous surface,
Protruding from the surface of the artificial soil substrate, non-flammable non-porous isolation,
Possess a flammable artificial soil top layer in a compartment formed by the isolation portion,
An artificial soil spread prevention structure, wherein the artificial soil top layer in one section is separated from the artificial soil top layer in an adjacent section by the isolation portion .

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