JP3617037B2 - Slope greening method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for greening slopes, particularly slopes that are relatively steep and difficult to plant as they are.
[0002]
[Prior art]
Conventionally, as one of the methods for greening a steep slope, a method in which a vegetation base material is filled in a pocket formed using a retaining sheet, a wire net, or the like on the slope is disclosed in, for example, Japanese Utility Model Publication No. Hei 6-71533. It is presented in Kaihei 7-3799, JP-A-9-78588, and the like.
[0003]
And what is presented in Japanese Utility Model Laid-Open No. 6-71533, as shown in FIG. 8, a pocket is formed on the back of a wire mesh with a retaining sheet, a fishing net, etc. The vegetation base material is filled in, and as shown in Japanese Patent Laid-Open No. 7-3799, as shown in FIG. 9, rods are attached to the rope suspended from the shoulders at predetermined intervals. The thing which suspends the earth retaining sheet in the shape of a pocket and fills the vegetation base material in the pocket, and the one shown in Japanese Patent Laid-Open No. 9-78588 is driven into the slope as shown in FIG. The rope is attached to the top of the anchor, etc., and is extended in the horizontal direction while floating from the slope, and the net is formed so as to form a pocket between the upper and lower ropes. Tensioning and filling the pocket with vegetation base material That.
[0004]
[Problems to be solved by the invention]
However, the conventional greening method for forming a pocket on the slope has a single earth retaining sheet forming the pocket, so that if the strength is not sufficient, it is torn or cut by the weight of the vegetation base material filled therein. There was a problem of doing. This is because, in particular, the earth retaining sheet itself must be made of a material and a structure through which the roots of the plant can penetrate, and further, it deteriorates with time due to the ultraviolet rays of the irradiated sunlight. In addition, for example, in order to protect the vegetation base material in the pocket from freezing and thawing and to improve weather resistance, it may be possible to coat the surface of the earth retaining sheet with a heat insulating material, but the heat insulating material is generally a thin polyethylene sheet Since it is formed of a sheet made of a material that is weak against ultraviolet rays, there is a problem that the deterioration is quick and the heat insulation effect is lost quickly.
[0005]
In addition, since the anchor is first installed on the slope, and then the earth retaining sheet is laid, the anchor part of the installed earth retaining sheet protrudes and the fit is bad, or the opening of the pocket part is narrow. is there.
[0006]
Furthermore, as shown in Japanese Utility Model Publication No. Hei 6-71533, when forming a pocket on the back of a wire mesh, it is difficult to handle because it is bulky as a whole when stored and transported as a roll, and the vegetation base material to be filled Since the particle size of the material depends on the mesh, it is necessary to prepare a particle size that can be passed in advance. For example, coarse particles such as on-site generated soil cannot be used, resulting in poor workability and economy. It is also disadvantageous.
[0007]
Furthermore, as shown in Japanese Patent Application Laid-Open No. 7-3799, when attaching rods at predetermined intervals to the rope suspended from the shoulder and hanging the dough sheet in a pocket shape, There is a problem that the load is concentrated on the anchor installed on the shoulder, particularly in a steep slope like those presented in Japanese Patent Application Laid-Open Nos. 7-3799 and 9-78588. For installations on site, there are problems that not only installation is difficult, but a large number of special tools such as fasteners for stopping vertical and cross members must be used.
[0008]
The present invention aims to improve the greening method of the slope using the conventional pocket, has a sufficient weather resistance, and is easy to handle during storage and transportation, and also during construction, in a stable state. Therefore, the present invention provides a method for planting a slope having many advantages such as a wide range of selection of vegetation base materials.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention forms a flat portion and a bent portion of a predetermined length alternately by overlapping and sewing a retaining sheet having an appropriate width at predetermined intervals, and sewing the folded sheet. Laying on the slope with the horizontal bar inserted inside the bent part, or inserting the horizontal bar after laying, then moving the bent part upwards to move the horizontal bar part A pocket is formed with the flat portion facing the bent portion and fixed at the head of the anchor protruding from the slope, and a plant is grown by filling the pocket with a vegetation base material. Features.
[0010]
Durability and weather resistance were improved by using a folded portion of the soil retaining sheet at the front surface portion of the pocket formed by the soil retaining sheet to fold the front surface portion of the pocket into a double structure. In addition, since it is done by fixing the horizontal bar inserted inside the bent part at the top of the anchor installed on the slope, not only special tools such as fasteners are required, but also laying work is easy In addition, since the opening of the pocket is in a largely open state, there is no need to use a vegetation base material having a predetermined particle size.
[0011]
In the present invention, when the heat insulating sheet is inserted into the inner surface of the bent portion of the earth retaining sheet, it can be attached by simply inserting the heat insulating sheet, and the attached heat insulating sheet is bent of the earth retaining sheet. Since the light is not shielded by the light and directly irradiated with sunlight, it is possible to effectively prevent the sun rays from being deteriorated by ultraviolet rays.
[0012]
Furthermore, when the folded portion of the soil retaining sheet is bent a plurality of times, when the reinforcing sheet is covered on the surface of the folded portion of the soil retaining sheet forming the pocket, the folding of the soil retaining sheet forming the pocket is When the surface of the curved portion is covered with a reinforcing agent, the pocket can be further improved in durability and weather resistance.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the drawings.
[0014]
FIG. 1 to FIG. 3 show a preferred example of a preferred embodiment of the present invention. As shown in FIG. 1, for example, a plant formed by Russell weave using hemp or polyester fiber of appropriate thickness as a material. A flat sheet 11 and a bent part 12 having a predetermined length are formed by overlapping and folding the retaining sheet 1 made of a sheet material through which the root can penetrate and having an appropriate width and length at predetermined intervals and sewing the root part. Are alternately formed, and the horizontal bar 2 is inserted into the inner top portion of the bent portion. In addition, you may insert this horizontal bar | burr material 2 at the time of construction, and in this case, it is convenient for the storage in a warehouse or the conveyance to the spot.
[0015]
When constructing the slope 3, first, the retaining sheet 1 is laid on the slope 3 from the shoulder 31 to the slope 32 as shown in FIG. At this time, a heat insulating sheet made of, for example, a polyethylene sheet is accommodated in the bent portion 12 of the earth retaining sheet 1, and an appropriate mesh is formed on the surface of the slope 3 as shown in FIG. It is possible to prevent the earth retaining sheet 1 from slipping down by stretching the wire mesh 4 having The wire mesh 4 also has a role of reinforcing the slope, but is not necessarily required depending on, for example, the slope angle of the slope or the stability of the soil.
[0016]
Next, as shown in FIG. 2 (C) and FIG. 3, each bent portion 12 is moved upward to penetrate the flat bar 11 with a predetermined distance from the portion of the horizontal bar member 2 and to the slope. 3 is fixed to each other by sewing, tightening, or the like using a string or the like, and a pocket 13 is formed by the flat portion 11 facing the bent portion 12. Therefore, there is no need for a special stopper or the like for fixing the earth retaining sheet to a wire net or a cord like in the past.
[0017]
In the present embodiment, since the anchor 6 penetrates the earth retaining sheet 1 and protrudes from the slope 3, the anchor portion of the earth retaining sheet laid on the slope 3 protrudes, and the pocket portion There is no worry about narrowing the opening.
[0018]
In addition, the retaining sheet 1 is supported on the slope 3 by a large number of anchors 6 projecting from the slope 3 at appropriate intervals in the vertical and horizontal directions, and there is no concern that the load concentrates on a part, and it is extremely stable. In this state, it is laid on the slope 3. In addition, the number of anchors 6 and the installation location can be appropriately selected according to the situation of the natural ground, which is economical in terms of labor and tools.
[0019]
Then, as shown in FIG. 2 (D), the vegetation base material 7 is filled in each pocket 13, and various mixed seeds are sown on the vegetation base material 7, or seeds are preliminarily seeded on the vegetation base material 7. As shown in FIG. 2 (E), the plant 8 is grown and greened by mixing.
[0020]
The present embodiment constructed as described above is the bent portion 12 that forms the front surface of the pocket 13, that is, it is folded to form a double structure so that it is durable against earth pressure and load, and ultraviolet rays from sunlight. The weather resistance can be improved. Moreover, since the heat insulation sheet 5 was inserted in the inner surface of the bending part 12 of the earth retaining sheet 1, the heat insulation sheet 5 can be attached by the simple operation | work which inserts the heat insulation sheet 5, and the attached heat insulation sheet 5 is the bending of the earth retaining sheet 1. Since the sunlight is not directly irradiated by the light shielded by the unit 12, it is possible to effectively prevent the sunlight rays from being deteriorated by the ultraviolet rays.
[0021]
FIG. 4 shows a different embodiment of the earth retaining seal 1 of the present invention, which is different in that the bent portion 12 is bent a plurality of times. Further, in the present embodiment, the front side is formed longer when laid on the slope, and when installed as shown in FIG. It is covered and protected in triplicate.
[0022]
FIGS. 6 and 7 show still another embodiment of the present invention. In the embodiment shown in FIG. 6, a reinforcing sheet 9 made of a sheet having excellent durability such as a tent place is provided with a pocket 13. This shows a case where the surface of the bent portion 12 of the earth retaining sheet 1 is covered, and the bent portion 12 of the earth retaining sheet 1 located inside can be protected over a long period of time. In particular, when a material having poor water permeability such as a tent is used, the vegetation base material 7 in the pocket 13 is protected from freezing and thawing of the vegetation base material filled in the bent portion 12 to enhance weather resistance. It is also possible to omit the heat insulating sheet 5 (see FIG. 3) installed for the purpose.
[0023]
Moreover, what is shown in FIG. 7 is that the surface of the folded sheet 12 laid on the slope 3 is covered with a reinforcing agent 10 such as cement milk containing an adhesive made of resin, emulsion, etc. The bent portion 12 is protected over a long period of time, and a reinforcing agent may be sprayed and solidified on the earth retaining sheet 1 constructed as shown in the figure, but the reinforcing agent 10 is previously applied at a factory or the like. Also good.
[0024]
【The invention's effect】
As described above, the present invention is not only excellent in durability and weather resistance by folding the front part of the pocket into a double structure, but also laying work without requiring special tools such as fasteners. It is easy, and the opening of the pocket is in a state of being largely open, so that it is not necessary to use a vegetation base material having a predetermined particle size adjusted in particle size.
[0025]
In addition, it can be attached by simply inserting the insulation sheet, and the attached insulation sheet is shielded from light by the bent part of the earth retaining sheet and is not directly irradiated with sunlight. It is possible to effectively prevent the deterioration due to.
[0026]
Further, the folded portion of the retaining sheet is bent many times, the reinforcing sheet is covered on the surface of the folded portion of the retaining sheet forming the pocket, the folded portion of the retaining sheet forming the pocket Durability and weather resistance can be further improved by covering the surface with a reinforcing agent.
[Brief description of the drawings]
FIG. 1 is a side end view of a earth retaining sheet used in an embodiment of the present invention.
FIG. 2 is an explanatory diagram showing a construction sequence in the embodiment of the present invention using the earth retaining sheet shown in FIG. 1;
FIG. 3 is an explanatory perspective view of a slope formed by the construction sequence shown in FIG. 2;
FIG. 4 is a side end view showing a different embodiment of the earth retaining sheet of the present invention.
5 is an explanatory view showing a construction example using the earth retaining sheet shown in FIG. 4; FIG.
FIG. 6 is an explanatory view showing a different embodiment of the present invention.
FIG. 7 is an explanatory view showing still another embodiment of the present invention.
FIG. 8 is an explanatory diagram showing a conventional example.
FIG. 9 is an explanatory diagram showing a different conventional example.
FIG. 10 is an explanatory view showing a further different conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Dust sheet, 2 Horizontal bar material, 3 Slope, 5 Thermal insulation sheet, 6 Anchor, 7 Vegetation base material, 9 Reinforcement sheet, 10 Reinforcement agent, 11 Flat part, 12 Bending part, 13 Pocket

Claims (4)

A flat sheet and a bent part of a predetermined length are alternately formed by overlapping and folding a retaining sheet having an appropriate width at predetermined intervals and sewing the root part, and a heat insulating sheet is formed on the inner surface of the bent part. And the horizontal bar is inserted inside the bent part, or the horizontal bar is inserted after laying, and then the bent part is moved upward to move the horizontal bar. A plant part is grown by fixing a timber portion with a head of an anchor projecting from a slope and forming a pocket with the flat part facing the bent part and filling the pocket with a vegetation base material. A method of greening a slope, characterized in that The slope greening method according to claim 1, wherein the bent portion of the earth retaining sheet is bent a plurality of times. The method for greening a slope according to claim 1 or 2, wherein a reinforcing sheet is covered on the surface of the bent portion of the retaining sheet forming the pocket. The method for greening a slope according to claim 1, 2 or 3, wherein the surface of the bent portion of the retaining sheet forming the pocket is covered with a reinforcing agent.

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