JP2004225292A - Slope face greening work execution method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spraying planting method, by which the face of a slope finished in a steep slope can harmonize easily with a peripheral vegetation by a structure in which the peripheral vegetation can intrude easily to the face of the slope. <P>SOLUTION: A slope face greening method has a process in which a reticulate body is developed on the face of the slope, a process, in which a plurality of cylindrical supporting members are inserted to the meshes of the reticulate body so that each top face is formed in horizontal planes, and a process in which a bedrock material is sprayed on the face of the slope and horizontal spraying surfaces are formed on each top face of the cylindrical supporting members. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a greening method for a cut slope or an embankment slope (hereinafter, simply referred to as a slope).
[0002]
[Prior art]
If the slope is left bare, there are problems such as easy erosion due to rainfall and the like, and surface layer collapse. Leaving an artificial slope in a bare ground is not preferable from an aesthetic point of view.
For this reason, conventionally, vegetation has been constructed on the slope. Among these vegetation works, spraying works are often used because they are easy to construct. Sprayers are classified into seed spraying, soil spraying, base material spraying, and the like according to the type of material to be sprayed, and are selectively used mainly by judging the condition of the ground, the climate, and the like (for example, Patent Document 1, Patent Reference 2).
[0003]
In any of the above methods, plant materials are mixed with the spray material, and these seeds germinate to enable early greening of the slope.
In the conventional construction method, first, a wire mesh called a "lass wire mesh" is installed on the surface of the slope after cutting (or embankment) is completed, and seeds, guest soil, base material, and the like are sprayed on the wire mesh.
[0004]
The lath wire mesh is fixed to the ground with anchor pins.
Water spray curing is applied to the slope after spraying as necessary to prevent germinated seeds from dying.
[Patent Document 1]
JP-A-6-280266 [Patent Document 2]
JP-A-9-264026
[Problems to be solved by the invention]
Seeds used for spraying vegetation are selected from the construction side, so the vegetation on the slope is different from the surrounding vegetation.
Recently, it has been required that the vegetation on the slope is in harmony with the surrounding ground. For this purpose, a structure that allows the surrounding vegetation to easily enter the slope after the spraying is completed. It is necessary to be.
The invasion of vegetation from the surroundings mainly depends on the arrival of seeds. The slope of the finished surface of the conventional spraying work is almost the same as the slope of the slope, and the slope is almost the same as the slope. It is an obstacle to the invasion of vegetation.
[0006]
The seed, the soil, and the base material are all adhered to the lath wire mesh, and are fixed to the slope.
The strongest of these materials is the base material. The base material is mixed with a cement-based or polymer-based fixing material to increase the adhesive force.
By mixing such a fixing material, the base material is stably fixed to the slope, but by using these materials, the water retention of the base material itself is reduced, and the necessity of watering curing is reduced. Is increasing.
[0007]
In addition, when the amount of the fixing material is increased and the strength is increased, the roots of the germinated seeds may hinder the invasion into the ground.
In addition, since it adheres to the slope only depending on the adhesive force, it may come off from the surface of the slope with time. In particular, when wood is to be introduced, this tendency is strongly recognized due to the wind acting on the wood and the weight of the wood itself.
[0008]
Recent demands include the following.
The support members must be made from materials that are naturally reduced and do not pollute the natural environment.
The vegetation growing on the slope has a structure that allows the surrounding vegetation to easily enter the slope in order to harmonize with the vegetation around the slope.
[0009]
By reducing the amount of cement-based or polymer-based adhesive used, the water retention of the base material itself is improved, and the necessity of watering curing is reduced.
Reduce the amount of sticking material used so that roots can easily penetrate the ground.
When woody plants grow, the problem of peeling off the slope surface should not occur.
[0010]
It must be able to maintain the necessary strength during the growth of woody plants (about 10 years), as well as being naturally reduced.
The present invention has been made to satisfy such a demand, and an object of the present invention is to provide a structure in which peripheral vegetation can easily invade a slope that has been finished with a steep slope. It is an object of the present invention to provide a spray greening method that can easily harmonize with surrounding vegetation.
[0011]
[Means for Solving the Problems]
The invention according to claim 1 is a step of unfolding and installing a reticulated body on a slope, and inserting and fixing a plurality of cylindrical support members in the mesh of the reticulated body such that the upper surfaces thereof are horizontal. And a step of spraying a base material onto the slope to form a horizontal spray surface on each upper surface of the cylindrical support member.
The invention according to claim 2 is a step of unfolding and installing the mesh on the slope, and cutting the tubular member into a mesh of the mesh and cutting the tubular member so that the upper surface becomes a horizontal plane. The method includes a step of installing a cylindrical support member and a step of spraying a base material on the slope to form a horizontal spray surface on each upper surface of the cylindrical support member.
[0012]
According to a third aspect of the present invention, in the slope greening method according to the first or second aspect, both or one of the net-like body and the cylindrical support member is made of a biodegradable resin. It is characterized by.
According to a fourth aspect of the present invention, in the slope greening method according to the first or second aspect, both or one of the net-like body and the cylindrical support member is made of bark material made of fiber or biodegradable resin. It is characterized by being constituted by a member which is mixed and molded into a cardboard shape.
[0013]
According to a fifth aspect of the present invention, in the slope greening method according to the first or second aspect, the cylindrical support member is formed of a mesh.
According to a sixth aspect of the present invention, in the slope greening method according to the second aspect, a tubular member is inserted into the mesh of the mesh body, and the tubular member is cut so that an upper surface thereof becomes a horizontal plane. The step of installing the member is characterized by repeating a procedure of inserting a long tubular member into the mesh of the mesh body, and then cutting the cut portion so as to form a horizontal plane.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described based on embodiments shown in the drawings.
1 to 6 show a slope greening method according to an embodiment of the present invention.
First, as shown in FIG. 1, a mesh 2 such as a lath wire mesh is developed and installed on a slope 1 in the same manner as in the related art.
Here, the size of the mesh 2a of the mesh body 2 may be any size as long as the cylindrical support member 5 to be inserted next can be easily inserted and fixed.
[0015]
Next, as shown in FIGS. 1 to 3, a plurality of tubular support members 5 are inserted into the mesh 2 a of the installed mesh 2 so that the upper surfaces 5 a of the mesh 2 a are horizontal. 2a is fixed using an annealed iron wire or the like.
Here, it is desirable to use a cylindrical support member 5 having a diameter of about 5 to 10 cm in view of the fact that it is necessary to form a horizontal spray surface 7 on the upper surface 5a after spraying, and in consideration of workability.
[0016]
Next, as shown in FIGS. 4 to 6, the base material 6 is sprayed on the slope to which the plurality of cylindrical support members 5 are fixed by a known base material spraying method.
At this time, the base material 6 is filled so that the inner side 5b of the tubular support member 5 is finished along a horizontal plane formed on the upper surface 5a of the tubular support member 5. That is, the upper surface 5 a of the cylindrical support member 5 forms the spray surface 7 of the base material 6.
[0017]
The outer side 5c of the cylindrical support member 5 may be left bare, but it is desirable to spray a thick layer base material with a thickness of about 5 to 10 cm similarly to conventional spraying for aesthetic reasons.
Thus, the slope greening method according to the present embodiment is completed.
In the slope 1 thus sprayed, a horizontal spray surface 7 is formed on the surface of the slope 1 after spraying by cutting the upper surface 5a of the cylindrical support member 5 horizontally. The seeds flying from the surroundings can be easily fixed on the spraying surface 7.
[0018]
Further, the base material 6 is not attached to the net 2 such as a lath wire mesh and fixed to the surface of the slope 1, but is a cylindrical support fixed to the net 2 such as the lath wire mesh with a flat iron wire or the like. Since it is sprayed into the member 5, it is surely held by the cylindrical support member 5, and even if the ratio of the fixing material is reduced, it can adhere to the slope 1 to form a stable vegetation base. It becomes possible. As a result, the water retention of the base material 6 itself is improved, and the root does not become an obstacle to enter the ground.
[0019]
Further, by using the cylindrical support member 5, it is possible to increase the sprayed thickness of the base material 6, which was conventionally about 5 to 10 cm.
In addition, the cylindrical support member 5 is securely fixed to the mesh 2 such as a lath wire mesh by an annealed iron wire, and the mesh 2 such as the lath wire mesh is securely fixed to the ground by an anchor pin. Therefore, it is possible to prevent the base material 6 from peeling off the slope 1.
[0020]
In the present embodiment, as the cylindrical support member 5, for example, as shown in FIG. 7, an inclined surface 5d in which a cylindrical body formed of a vinyl chloride resin or a biodegradable resin or the like is previously adjusted to the slope 1 As shown in FIG. 8, as shown in FIG. 8, a bark material (a piece of wood made of bark such as redwood, oak, cedar, cypress bark, etc.) mixed with fiber or biodegradable resin to form a corrugated tubular shape It may be provided with an inclined surface 5d whose body is adjusted to the slope 1 in advance.
[0021]
As the biodegradable resin, for example, a known lactic acid-based biodegradable resin can be used. This resin has the same deformation characteristics as hard vinyl chloride, and is decomposed into water and carbon dioxide by microorganisms in the soil, so that there is no burden on the environment. Furthermore, since the molding is easy, it is easy to make the required period strength speak.
In addition, when fiber or biodegradable resin is mixed with bark material to form a corrugated cardboard, the cylindrical support member does not hinder the growth of vegetation, and a cylindrical support member having the necessary strength is provided. Become.
[0022]
In the above-described embodiment, a pre-cut slope is used in order to apply to the shaped slope 1. However, the present invention is not limited to this. For example, a mold made of a vinyl chloride resin or a biodegradable resin is used. The formed tubular member may be cut at the site into a shape as shown in FIG. 7 (claim 2).
Further, the cylindrical support member 5 may be formed by cutting a flexible and long material such as a hose into a shape as shown in FIG.
[0023]
In addition, when a cylindrical support member 5 having a diameter of about 5 to 10 cm is used, about 10 to 20 pieces per m ² are provided so as to cover about 5 to 10% of the entire slope. Although they can be arranged, it is not always necessary to stick to this. For example, the cylindrical support member 5 may be fixed to all meshes. For example, it can be considered that φ5 cm × 10 pieces make up 2% of the entire slope, and φ10 cm × 20 pieces make up 15% of the entire slope.
[0024]
【The invention's effect】
According to the present invention, by horizontally processing or cutting the upper surface of the cylindrical support member, a horizontal spray surface can be formed on the slope surface after spraying, and seeds flying from the surroundings can be easily fixed to the spray surface. can do. Therefore, ecosystem restoration by local seeds is possible.
In addition, since the spray material is supported by using the cylindrical support member, the amount of cement-based or polymer-based fixing material can be reduced, and the amount of the fixing material can be reduced to reduce the amount of the base material. Water retention can be improved.
[0025]
In addition, since the spray material is supported by using the cylindrical support member, the spray material can be prevented from falling off the slope, and the spray thickness can be increased.
Further, by increasing the length of the cylindrical support member, the spray thickness can be increased.
Further, since the net-like body and / or the cylindrical support member are made of a biodegradable resin, the load on the environment can be reduced.
[0026]
In addition, by forming the cylindrical support member with a wire mesh, it is easy to attach the support member to the mesh body, and it is possible to prevent the occurrence of porosity during spraying.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a state in which a cylindrical support member is fixed in a slope greening method according to an embodiment of the present invention.
FIG. 2 is a plan view of FIG.
FIG. 3 is a front view of FIG. 1;
FIG. 4 is a cross-sectional view showing a state where a base material is sprayed on a cylindrical support member installed in the slope greening method according to one embodiment of the present invention.
FIG. 5 is a plan view of FIG. 4;
FIG. 6 is a front view of FIG. 4;
FIG. 7 is a perspective view showing a cylindrical support member used in the present invention.
FIG. 8 is a perspective view showing a cylindrical support member used in the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Slope 2 Reticulated body 2a Mesh 5 Cylindrical support member 5a Upper surface 5a of cylindrical support member 5 Inner side 5c of cylindrical support member 5 Outer side 6 of cylindrical support member 5 Base material 7 Spraying base material 6 surface

Claims (6)

A step of deploying and installing the mesh on the slope,
A step of inserting and fixing a plurality of cylindrical support members in the mesh of the mesh body so that their respective upper surfaces are horizontal,
Spraying a base material onto the slope and forming a horizontal spray surface on each upper surface of the cylindrical support member. A step of deploying and installing the mesh on the slope,
A step of inserting a tubular member in the mesh of the mesh body, cutting the tubular member so that the upper surface becomes a horizontal plane, and installing a plurality of tubular support members,
Spraying a base material onto the slope and forming a horizontal spray surface on each upper surface of the cylindrical support member. In the slope greening method according to claim 1 or 2,
A slope greening method, wherein at least one of the net-like body and the cylindrical support member is made of a biodegradable resin. In the slope greening method according to claim 1 or 2,
A slope revegetation method, wherein at least one of the net-like body and the tubular support member is formed of a cardboard-shaped member obtained by mixing fiber or biodegradable resin with a bark material. In the slope greening method according to claim 1 or 2,
The slope greening method, wherein the tubular support member is formed of a mesh. In the slope greening method according to claim 2,
The step of inserting a tubular member into the mesh of the mesh body, cutting the tubular member so that the upper surface becomes a horizontal plane, and installing a plurality of tubular support members, comprises the steps of: attaching a long tubular member to the mesh of the mesh body. A method of replanting a slope, characterized by repeating a procedure of cutting a cutting part so as to form a horizontal plane after inserting the cutting part into a horizontal plane.

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