JPS6253651B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for greening slopes, and more particularly to a method suitable for greening slopes cut from rock or the like.

For vegetation on cut slopes such as bedrock, it is necessary to cover the slope with a thick layer of soil and to prevent the soil from being washed away by rainwater. For this reason, conventional methods have been used, such as covering the surface of the added soil with wire mesh, fiber mesh, or rather, and fixing it with anchors, or spraying soil fixatives to consolidate the topsoil layer. ing.

However, the soil thickness that can be protected by these methods is only 2 to 3 cm at most, so they are unsuitable for cutting slopes of rock where a thick layer of soil is desired, and they are not suitable for cutting slopes with steep slopes. was not applicable.

To solve these problems, various methods have been proposed in which a frame is constructed on the slope and soil is poured into cells surrounded by the frame. For example, (a) a base material made of a band-shaped expanded metal bent into a triangular wave shape is laid and fixed on a slope with each vertex abutting, and the soil is placed inside the rectangular cells formed by the base material. How to grow vegetation (Unexamined Japanese Patent Publication 1986-
136332).

(b) Form expanded metal strips, plastic nets, etc. into a ring shape, connect these ring-shaped base materials in a mutually circumscribed manner, lay and fix them on the slope, add soil within the frame, and grow vegetation. Method (Unexamined Japanese Patent Publication 1983-
114714) etc.

In both of these construction methods, the size of the cell surrounded by the frame material is large, about 1 meter, so if the slope is steep, it is not sufficient to prevent water from washing away on the surface layer, and if the frame material is 3 mm They are expensive because they are made of thick steel from the front and back, and are painted or galvanized to prevent corrosion.
Moreover, because it is heavy, it requires a lot of manual labor to lay it on the slope.

In addition, in recent years, a formwork of around 1m on each side made of net or paper is laid on the slope, reinforcing bars are placed inside the formwork, and mortar is sprayed to form a concrete frame, and vegetation is placed inside the frame. There are also methods to do this. However, with this construction method, the inside of the concrete frame is not protected in any way, so from the viewpoint of vegetation, it is difficult to avoid soil and seeds being washed away by rainwater.

This invention was made with the aim of solving these difficulties.A frame material with a large number of cells formed on the slope is laid down and fixed to the slope using mortar spraying. The soil was added to the area to form a vegetation layer that is less likely to be washed away by rainwater.

An embodiment of the present invention will be described in detail below.

Figure 1 is a perspective view showing a tape-shaped base material with a frame material made of water-resistant cardboard laid on a slope, Figure 2 is a partially enlarged view, and 1 is a predetermined width of 5 to 10 cm. It is a tape-shaped base material cut into squares, folded back to a predetermined length of 10 to 30 cm, and the tops of each are butted together and stapled together to form a frame 4 that forms a large number of square cells 3. It consists of Reference numeral 5 indicates a number of holes formed on the surface of the base material 1, which serve as water passages and increase the adhesion of the sprayed cement mortar to the frame material 4, which will be described later. It is an anchor that fastens to a surface.

The frame material 4 is manufactured in a factory and delivered to the site in an unstretched state. The frame material 4 is expanded at the site and laid along the unevenness of the slope.
Temporarily fasten with anchor 6. Next, mortar is sprayed to fix the frame material 4 to the slope.

That is, mortar is sprayed onto the portion where the frame material 4 contacts the slope. Mortar does not need to be sprayed on all the cells, and may be sprayed on every third row or every fifth row in a grid pattern, taking into account the inclination of the slope and the like.

In addition, since the frame members 4 form small-sized cells and are connected to each other, they do not fall over even when subjected to mortar spraying pressure.

After spraying mortar, leave it for a few days to solidify the cement mortar and fix the frame material 4 to the slope, then add soil into each cell and scatter seeds and fertilizer, or spread seeds and fertilizer in advance. Replenish soil and add vegetation by spraying artificial soil mixed with soil.

As described above, in the vegetation method according to the present invention, since the frame material is lightweight, it is easy to lay and fix it on the slope, and the thickness of the soil can be adjusted freely depending on the width of the tape-shaped substrate 1. Since the area of each cell is small, surface soil can be prevented from being washed away, and good vegetation can be created.

In the embodiments described above, water-resistant cardboard was used as the tape-shaped base material 1, but ordinary cardboard, paperboard, nonwoven fabric, cloth, etc. can also be used, and these can also be impregnated with paraffin, asphalt, oil, etc. It is also possible to use a material that has been imparted with water resistance.

In addition, the tape-shaped base material 1 includes punching metal,
Expanded metal, lath wire mesh, etc. can also be applied.
Furthermore, it is also possible to apply plastic netting, etc., and especially when using metal netting, corrosion resistance is improved by spraying cement mortar over the entire surface of the frame material, resulting in a frame that has both strength and durability. can get.

Further, in the above embodiment, an example was shown in which the tape-shaped base material 1 was stapled together, but the tape-like base material 1 could also be stapled together using adhesives, stapled together at the construction site, or fixed with a number of anchors. There is no particular need to stitch them together.

Furthermore, in the above embodiment, the tape-shaped base material 1 is folded back at a certain length to form a rectangular cell 3, but as shown in FIG. Alternatively, a hexagonal cell may be constructed.

Note that the shape of the cell formed by connecting tape-shaped base materials is not limited to the above shape, but may be a rectangle, a triangle, a shape formed by connecting waveforms, or the like.

As described in detail above, this invention involves laying on a slope a frame material in which tape-shaped base materials folded into a predetermined shape are lined up and adjacent parts are connected to form small cells. After fixing by spraying mortar between the cells, we added soil and planted vegetation in each cell, making it easy to transport the frame materials, as well as laying and fixing the frame materials on the slope. The thickness of the soil can be arbitrarily selected according to the height of the frame material, and since the area of each cell is small, it is possible to prevent the added soil from being washed away by rainwater, making it easy to grow vegetation, etc. It's watery.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of one embodiment of the invention, FIG. 2 is a partially enlarged view thereof, and FIG. 3 is a front view of another embodiment of the invention. Explanation of symbols, 1...Tape-shaped base material, 2...Stapler, 3...Cell, 4...Frame material, 5...
Hole, 6... Anchor.

Claims (1)

[Scope of Claims] 1. A frame material in which tape-shaped base materials folded back into a predetermined shape are lined up and adjacent parts are connected to form small cells is laid on a slope. A slope greening method in which mortar is sprayed between the cells to secure them in place, and then soil is added to each cell to grow vegetation. 2. The slope greening method according to claim 1, wherein the base material is corrugated paper, paperboard, nonwoven fabric, cloth, or a material impregnated with paraffin, asphalt, oil, etc. to impart water resistance. 3. The slope greening method according to claim 2, wherein a large number of small holes are formed in the base material. 4. The slope greening method according to claim 1, wherein the base material is a punched steel plate, an expanded steel plate, or a metal lath.