JPH0699931B2 - Planting difficulty slope greening method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for revegetation on a slope where mortar, concrete or the like is sprayed or on a slope where it is difficult to grow plants such as bedrock.

[0002]

2. Description of the Related Art A so-called thick-layer soil revegetation method in which sandy soil and a soil conditioner, cement, fertilizer and plant seeds are mixed by stirring and sprayed with a shotgun etc. It has been known.

By the way, in general, there are problems in growing plants on slopes such as a mortar spraying surface, which are difficult to grow, because of the effect of drying the vegetation base and vegetation due to rainwater flowing on the surface such as mortar surface. Sliding down of the base,
Lack of nutrients and water due to the inability of roots to enter the ground,
and so on.

[0006] Looking at the above-mentioned thick layer soil revegetation method from this point of view, this method generally has weak adhesion (adhesion) to the slope and shear strength. Sliding of the vegetation base due to pore water pressure and the roots of grown plants cannot grow at the joint surface with the slope, and the water supply from the ground itself, which is the slippage due to being on the mat or the slope where plant growth is difficult There is a problem on the stability of the vegetation base such as cracks in the soil itself caused by rapid drying in places where it cannot be expected at all, and it is not possible to adequately address the above problems (1) to (3).

Therefore, as a means for solving the above-mentioned problems (1) to (4), there is one disclosed in Japanese Patent Publication No. 62-11127. That is, in this greening method, as shown in FIG. 4, a belt-shaped fiber synthetic mat 42 is stretched in a contour line on the slope 41 at appropriate intervals with concrete nails 43. Next, the anchor bolts 44 are driven along the lower end of the belt-shaped fiber synthetic mat 42 at appropriate intervals, and the heads of the anchor bolts 44 are connected by the reinforcing bars 45. In addition, the drainage pipe 46 is sloped at an appropriate interval.
The back surface of 41 is inserted into the strip-shaped fiber synthetic mat 42 at an angle such that water is guided to the outside. Next, the tip of the drainage pipe 46 is exposed to the outside to cover the drainage pipe 46, the reinforcing bar 45 and the anchor bolt 44, and a mortar 47 is sprayed downward from the center of the strip-shaped fiber synthetic mat 42 to form a horizontal contour line. Create beam 48. Thereafter, the vegetation material 49 is sprayed on the slope 41 divided by the horizontal beam 48 to form a vegetation base, thereby greening the slope 41.

[0006]

However, the above-mentioned conventional greening method seems to have solved the above-mentioned problems (1) to (4), but when examined in detail, the following drawbacks were found. is there. That is, the vegetation material 49 sprayed on the slope 41 is positioned on the upper surface of the belt-shaped fiber synthetic mat 42 stretched directly so as to be in close contact with the slope 41, and after spraying. In consideration of runoff, the vegetation material 49 cannot be sprayed so thick that the slope 41
The vegetation base consisting of the vegetation material 49 sprayed on does not have much water holding capacity, and the above problems have not been completely solved.

The vegetation base is not connected to the ground beneath the mortar surface, and therefore the roots of the plants emerging from the vegetation base are not rooted in the ground. That is, the above problems are still unsolved.

Further, in the above conventional greening method,
After forming a horizontal beam 48 by spraying mortar so as to cover the drainage pipe 46, the reinforcing bar 45 and the anchor bolt 44,
The vegetation material 49 must be sprayed, different types of spraying must be performed twice, and the drainage pipe 46 must be installed. Even after spraying on 41, the horizontal beam 48 made of mortar is exposed and there is a disadvantage that the landscape is not good.

The present invention has been made in consideration of the above matters, and an object of the present invention is that the vegetation material sprayed on the slope strongly adheres to the slope and is integrated with the ground. It is possible to form a vegetation base that can grow plants reliably, and construction is easier than before, and moreover,
An object of the present invention is to provide a method of planting a slope that is difficult to grow in a plant, which can create a slope that is beautiful in appearance.

[0010]

In order to achieve the above object, the method for planting a difficult slope for plant growth according to the present invention is designed to open a plurality of holes at appropriate intervals on the slope even in the ground. And a plurality of strip-shaped fiber synthetic mats are fixed to the slope at appropriate intervals, and then a plurality of partition members having a plurality of holes are contoured at appropriate intervals in a substantially vertical direction to the slope. And a net-like body is stretched from above the partition member so as to cover the entire slope, and then the vegetation material is sprayed onto the entire slope from above the net-like body.

[0011]

In the planting difficult slope greening method according to the present invention, the reticulate body is held by the partition member which is erected substantially perpendicular to the slope and the reticulate body is floated from the slope. Therefore, the vegetation material can be sprayed thickly on the slope as much as the net is floated, and the water retention capacity of the vegetation base formed by the vegetation material is increased accordingly.
Since a plurality of holes are provided on the slope at appropriate intervals so as to open even in the natural ground, water from the natural ground is replenished through these holes. As a result, there is no fear of drying in the vegetation base.

Further, since a plurality of strip-shaped fiber synthetic mats are fixed at appropriate intervals on the slope, collection and drainage are smoothly performed, and a plurality of partition members having a plurality of holes are formed. Since the net-like body is provided so as to stand substantially perpendicular to the slope and covers the entire slope, the vegetation base strongly adheres to the slope without slipping off.

Further, the roots of the plants in the vegetation base reach the natural ground through a plurality of holes formed in the slope, and the plants on the slope are also supplied with water and nutrients from the natural ground. In other words, since the vegetation base and the ground are integrated to grow plants on the slope, the slope is more surely greened.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 to FIG. 3 are views for explaining a method for planting a difficult slope for plant growth according to the present invention. In FIG. 1, reference numeral 1 is a solid ground, 2 is a spray slope in which mortar, concrete or the like is sprayed on the natural ground 1 or a slope on which plant growth is difficult, such as bedrock. In this embodiment, the spray surface is mortar. Is. First, as shown in FIGS. 2 and 3, holes 3 having a diameter of about 10 to 40 mm are formed on the mortar spraying surface 2 at appropriate intervals (for example, 30 cm) at the ground 1 as well. Provide multiple.

On the mortar spraying surface 2, a plurality of belt-shaped fiber synthetic mats (for example, Stella sheet: trade name) 4 having a width of about 10 to 20 cm and a thickness of about 1 to 2 cm are concretely spaced at appropriate intervals. Stick and fix with nails 5 etc. In this case, in the fiber synthetic mat 4, the longitudinal direction (the arrow X direction in FIG. 3), which is the direction in which the mortar spraying surface 2 is inclined, is, for example, 200 to 300 cm apart, and the lateral direction (the arrow Y direction in FIG. 3). ) Is a longitudinal fiber synthetic mat 4
It is preferable to provide them obliquely so as to form a mountain shape approximately in the middle.

Next, a plurality of partition members 7 having a plurality of holes 6 in the plane portion are formed in contour lines at appropriate intervals (for example, about 1 to 2 m) (see FIG. 3) and are substantially perpendicular to the mortar spraying surface 2. And is fixed by anchor bolts 8 (see FIGS. 1 and 2). In this case, as the partition member 7, for example, expanded metal may be appropriately cut and used, or a plate in which holes are opened, a plain weave wire mesh, or the like may be used. In the example, the mesh size is 40
The size is cm x 20 cm.

Further, the net-like member 9 is stretched from above the partition member 7 so as to cover the entire mortar spraying surface 2, that is, in a state of being floated from the mortar spraying surface 2 by substantially the height of the partition member 7. Then, fix it to the anchor bolt 10 that reaches the natural ground 1. As the mesh body 9, for example, a diamond wire mesh or a tensor (molding net) can be used, and the mesh is preferably about 50 mm × 50 mm.

After the mesh 9 is stretched as described above,
The vegetation material 11 is sprayed over the mortar spraying surface 2 from above the net 9 by either a wet spraying method or a dry spraying method. The vegetation base formed by the vegetation material 11 sprayed on the mortar spraying surface 2 is preferably thick so that the vegetation base is, for example, about 5 to 20 cm. In this case, it is preferable that the net-like body 9 be stretched so as to be located at the middle height position of the vegetation base. This is because the vegetation base does not easily run off when the net-like body 9 is provided at an intermediate height of the vegetation base.

The vegetation material 11 is mainly composed of a plant seed and a vegetation base material such as a fertilizer, a growth base material, a water retaining material, and a paste material, and it is preferable to use a kind which is resistant to drying as the plant seed. for example Kentucky 31 fescue, bermudagrass, red top, Medohagi, Yamahagi, preferably appropriately selecting and blending the seeds, such as Dianthus chinensis. Then, as the fertilizer, a mixture of fast-acting, slow-acting, and ultra-slow-acting fertilizers at an appropriate ratio is used. Also,
Appropriate materials are used for the growth base material, the water retention material, the paste material, and the like.

Then, the vegetation material is prepared by the wet spraying method.
When spraying 11, for example, in a mixer, plant seeds, vegetation base material, and water to knead the vegetation material 11,
This is discharged from the spray nozzle by the air pressure of the compressor using a mortar spraying machine to spray the mortar spraying surface 2.

The vegetation material 11 can also be prepared by the dry spray method.
In case of spraying, for example, by the applicant of the present application, June 1, 1991
The “spraying method of spraying base material in the greening method” (Japanese Patent Application No. 3-157568) filed on the date of application can be adopted. That is, in the spraying device disclosed in this prior application, a plant seed and a vegetation base material are mixed to form a spraying base material, which is fed to a spraying nozzle by a blower, while introducing water into the spraying nozzle. The spraying base material and water are sprayed from the spraying nozzle onto the mortar spraying surface 2.

According to the experiments conducted by the inventors, the mesh 9
It was found that it is preferable to stretch the vegetation material 11 at a position approximately 6 cm from the mortar spraying surface 2 and spray the vegetation material 11 so that the thickness of the vegetation base becomes approximately 12 cm.

In the above-mentioned greening method, the mesh member 9 is held by the partition member 7 which is erected substantially perpendicularly to the mortar spray surface 2, and the mesh member 9 is floated from the mortar spray surface 2. As a result, the vegetation material 11 can be thickly sprayed onto the mortar spraying surface 2 by the amount by which the reticulated body 9 is floated, and the water retention capacity of the vegetation base formed by the vegetation material 11 is increased. Since a plurality of holes 3 are provided on the mortar spraying surface 2 at appropriate intervals so as to open also in the natural ground 1, water from the natural ground 1 is replenished through the holes 3. It As a result, there is no fear of drying in the vegetation base.

Further, since a plurality of belt-shaped fiber synthetic mats 4 are fixed to the mortar spraying surface 2 at appropriate intervals, the collection and drainage are smoothly performed and the partition having a plurality of holes 6 is provided. Since a plurality of members 7 are erected substantially perpendicular to the mortar spraying surface 2, and a net-like body 9 is provided so as to cover the entire mortar spraying surface 2, the vegetation base slides down. Without mortar spraying surface 2
Stick tightly on top.

Further, the roots of the plants in the vegetation base reach the natural ground 1 through the plurality of holes 3 formed in the mortar spraying surface 2, and the plants on the mortar spraying surface 2 are
Water and nutrients are also supplied from the natural ground 1. That is, since the vegetation base and the natural ground 1 are united to grow the plants on the mortar spraying surface 2, the mortar spraying surface 2 is more reliably
Is greened.

Needless to say, the method of the present invention can be widely applied to the slopes other than the mortar spraying face 2 such as concrete spraying slopes and slopes where it is difficult to grow plants such as bedrock.

[0028]

As described above, according to the method of the present invention, the vegetation material sprayed on the slope strongly adheres to the slope, and the plant is surely grown together with the ground. The vegetation base that can be formed can be surely formed, the construction is simpler than in the past, and no strange exposed matter is formed. Therefore, a slope that is beautiful in appearance can be created.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state of a slope on which a planting difficulty slope greening method according to the present invention has been applied.

FIG. 2 is a cross-sectional perspective view showing a state in which a belt-shaped fiber synthetic mat, a partition member, and a mesh body are provided on the slope.

FIG. 3 is a plan view showing a state in which a belt-shaped fiber synthetic mat, a partition member, and a mesh body are provided on the slope.

FIG. 4 is a diagram showing a conventional technique.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Ground, 2 ... Slope, 3 ... Hole, 4 ... Band-shaped fiber synthetic mat, 6 ... Hole, 7 ... Partition member, 9 ... Net body, 11 ... Vegetation material.

Claims (1)

[Claims] 1. A plurality of holes are formed on the slope so as to be opened at appropriate intervals even in the ground, and a plurality of strip-shaped fiber synthetic mats are fixed on the slope at appropriate intervals.
Next, a plurality of partition members having a plurality of holes are erected at a suitable interval in a contour line substantially perpendicular to the slope, and a net-like member is stretched from above the partition members so as to cover the entire slope. After that, a planting-difficult slope slope planting method is characterized in that a vegetation material is sprayed over the reticulate body over the slope.