JPH0748841A - Slope vegetation method - Google Patents

Abstract

PURPOSE:To prevent the flow down at the time of the spray execution of a vegetation foundation material and surely prevent the flow away after execution. CONSTITUTION:Many slope anchors 20 integrated with blade plates 22 extended in the direction perpendicular to anchor shafts 21 are driven into a slope 10. A vegetation foundation material 30 is sprayed between the slope anchors 20 on the slope 10 after many weirs are dispersedly formed by the blade plates 22 of the slope anchors 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sloped vegetation construction method in which a vegetation base material containing plant seeds is sprayed onto a slope to grow plants early.

[0002]

2. Description of the Related Art Slopes and slopes are inevitably formed on new roads and land reclamation areas. However, if plants are not grown early on these slopes, the slopes will become soiled due to rain. As it flows away (runs away), the shape of the slope itself cannot be maintained. In particular, when the slope is exposed as it is, not only the natural environment such as a mountain surface is significantly impaired, but also the aesthetic appearance is deteriorated and a desolate impression is given to a person.

For this reason, conventionally, a spraying method has been adopted in which plant seeds are sprayed onto a newly formed or bare slope to promote early growth of the plant. In this conventional spraying method, the plant seeds are sprayed on a slope along with a fertilizer and a soil improving material to achieve short-term protection of a large area slope and early germination / breeding of the plant seeds.

However, in this conventional spraying method, a large amount of water is mixed with plant seeds, fertilizer and the like (hereinafter simply referred to as a plant base material), and the plant base material is pumped and sprayed onto the slope. Therefore, there is no problem if the slope is gentle and the water absorption is good. However, if the slope is a steep slope or if the rock mass is exposed and the water absorbency is very poor, the plant seeds sprayed on the slope will be treated with a large amount of water. It will flow down (flow down).

Further, during such construction, even if the plant seeds and the like do not flow down, the vegetation base material runs away with the flow of rainwater etc. when a large amount of rain etc. falls after construction. It is quite possible that they will do so.

The flow-down of the vegetation base material during the construction as described above not only makes the construction itself difficult, but also
Since a large amount of material is required, the construction cost will be increased.

[0007] Further, if the vegetation base material after the construction runs out, it is natural that the vegetation cannot be surely performed on the target slope, and the construction site is inconvenient for remote traffic. Then, the re-construction will be very expensive.

Therefore, the present inventor has completed the present invention as a result of various studies to prevent the vegetation base material from flowing down during construction and preventing runoff after construction.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and the problems to be solved are as follows.
It is to prevent runoff of vegetation base material during construction and runoff after construction.

The object of the invention according to claim 1 is to provide a method capable of preventing runoff during spraying of a vegetation base material and reliably preventing runoff even after construction. It is to provide a surface vegetation method with a simple structure.

The object of the invention according to claim 2 is to achieve the same object as in claim 1 and to further improve the fixation of the vegetation base material on the slope surface. To provide a construction method.

[0012]

In order to solve the above-mentioned problems, the means adopted by the invention according to claim 1 will be described with reference to the symbols used in the examples. A slope vegetation method for spraying a vegetation base material 30 mixed with a soil improving material, fertilizer, and the like for germination / breeding on the slope 10 to perform vegetation on the slope 10. Anchor 20 for slopes in which a blade plate 22 extending in a direction orthogonal to the anchor shaft 21 is integrated with the anchor shaft 21.
By driving a large number of these, the anchor 20 for these slopes
After forming a large number of weirs by the vane plates 22 on the slope 10, the vegetation base material 30 is sprayed onto the slope 10 located between the slope anchors 20. Slope slope vegetation method.

That is, in the slope vegetation method of the present invention, a plurality of slope anchors 20 are driven on the slope 10 and then the vegetation base material 30 is sprayed on the slope anchors 20. The vegetation base material 30 sprayed on the slope anchors 20 is attached to each slope anchor 20.
The anchor shaft 21 of FIG. Thereby, after the construction, the vegetation base material 30 on the slope anchor 20 can be stabilized by each slope anchor 20.

Further, in the means adopted by the invention according to claim 2, when the above-mentioned construction method is carried out, the long fibers 32 are mixed in advance in the vegetation base material 30 to be sprayed on the slope 10. It is to leave.

[0015]

The operation of the slope vegetation construction method according to claim 1 constructed as described above will be explained. First, a large number of slope anchors 20 are driven on the slope 10 which is bare. However, the arrangement at that time is, for example, in a zigzag pattern as shown in FIG. In addition, a blade plate 22 integrated with an anchor shaft 21 that constitutes each slope anchor 20.
Are arranged and driven so as to spread laterally, that is, in the horizontal direction. By performing the above-described construction, as shown in FIGS. 2 and 4, a large number of small weirs formed by the blades 22 of the anchors 20 for slopes are formed on the slope 10 in a zigzag pattern. It becomes.

Then, each slope anchor 2 as described above
After driving 0 onto the slope 10, the vegetation base material 30 containing the plant seeds 31 is sprayed onto the slope 10 located between the slope anchors 20, but the sprayed vegetation base material 30 is Even if an attempt is made to flow down the slope 10, FIG.
As shown by the solid line in the drawing, each of the vane plates 22 forming the weir blocks the dam. Therefore, this vegetation base material 3
Since a large amount of this vegetation base material 30 does not flow down on the slope 10 at the time of spraying 0, it is not necessary to prepare a large amount of vegetation base material 30. In addition, since each vegetation base material 30 is blocked by the blades 22 of each slope anchor 20 during spraying, the vegetation base material 30 can be mixed in a larger amount of water than in the conventional spraying construction method. This makes the operation of the pump more reliable and stable.

In the slope vegetation method according to the second aspect of the present invention, since the long fibers 32 are preliminarily mixed with the above vegetation base material 30, the vegetation base material 30 and the slope 1
The long fibers 32 sprayed on the surface 0 are entangled with the anchors 20 for slopes that have already been driven into the slope 10.

The long fibers 32 entwined with each slope anchor 20 further entangle with a part of the vegetation base material 30, as shown in FIG. 4, and as a result, the vegetation base material 30 is sloped. It will be fixed on 10. That is, the vegetation base material 30 is fixed to the slope 10 at the time of spraying construction through the long fibers 32, and the vegetation base material 30 is prevented from flowing down.

On the other hand, when the vegetation base material 30 is sprayed by the pump, the spraying force causes the blade 2
2 try to change the angle, or vegetation base material 30
The hole for transporting the blade touches the blade 22 and the blade 2
You may try to change the angle of 2.

However, for such a force,
This can be dealt with by directly inserting the lower surface of the vane plate 22 onto the slope 10 to make it difficult to rotate, or by firmly driving the anchor shaft 21 of the slope anchor 20 into the slope 10. Further, if necessary, as illustrated in the following examples of the slope anchor 20, the lower portion of the anchor shaft 21 (the portion that is driven into the slope 10),
If the wing portion 23 that blocks the rotation of the anchor shaft 21 is integrally provided, the rotation of the blade plate 22 is blocked.

The slope 1 after the above construction is completed
0, the vegetation base material 30 is the anchor 2 for each slope.
Since it is firmly held by the blade plate 22 of 0, even if a large amount of water is contained in the vegetation base material 30 again due to rain or the like and water flows on the surface of the vegetation base material 30, The vegetation base material 30 does not run away.

In particular, when the construction method of claim 2 is adopted, the vegetation base material 30 is in a state in which the long fibers 32 in the vegetation base material 30 are connected to each other on the slope 10 as if they were soil walls in a house. Therefore, runoff of the vegetation base material 30 is completely prevented.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the invention according to each claim will be described according to the embodiments shown in the drawings, but the invention according to claim 1 is substantially included in the invention according to claim 2. ,
The following description will be focused on the slope vegetation method according to claim 2.

First, in the present invention, as shown in FIG. 1, a large number of slope anchors 20 are driven on the slope 10, and the arrangement of the slope anchors 20 is, for example, as shown in FIG.
The zigzag shape is preferable as shown in FIG. This is because, by arranging as shown in FIG. 2, the vegetation base material 30 that tends to flow down together with water can be blocked in almost all parts of the slope 10. Of course, it is most effective to prevent the vegetation base material 30 from flowing down by arranging and driving the slope anchor 20 so that the blade plate 22 integrated with the anchor shaft 21 is positioned in a horizontal state. is there. Therefore, the array density of each slope anchor 20 is preferably at least 1 line / m ² .

Each slope anchor 20 used here
For example, as shown in FIGS. 4 to 7, at an upper portion of the anchor shaft 21 to be driven into the slope 10 (a portion exposed on the surface of the slope 10), orthogonal to the anchor shaft 21. The blade plate 22 extending laterally is integrated.

The integration of the vane plate 22 with the anchor shaft 21 may be achieved by forming the slope 20 for the slope as a whole by so-called integral molding, but as shown in FIG. 6, it is performed by adhesion or welding. May be. In the case of bonding or welding, as shown in FIG. 6, a concave groove into which the anchor shaft 21 can be inserted is formed in the central portion of the blade plate 22, and the anchor shaft 2 of the blade plate 22 is formed by this groove.
It is preferable to increase the contact area with respect to 1.

The vane plate 22 of the slope anchor 20 shown in each of the drawings is formed as a simple plate-like member, but the vane plate 22 is for blocking the vegetation base material 30 which is about to flow down or run away. Therefore, in order to surely carry out the damming, even if it is configured as a convex curved portion below the slope 10 or has a corrugated shape as a whole and has a large number of trapping recesses, Good.

After the arrangement and fixing of the slope anchors 20 are completed, the vegetation base material 30 is sprayed onto the slopes 10 located between them. In this embodiment, spraying is performed twice. I chose The first time, that is, plant seeds 3 in the vegetation base material 30 to be sprayed directly on the slope 10.
For the second time, the seeds 31 were not included, and the plant seeds 31 were included in the vegetation base material 30 serving as the top soil of the slope 10, so that the spraying was performed twice. The reason is that when the vegetation base material 30 is thick, the plant seeds 31 for vegetation may be buried deep in the soil, and such plant seeds 31 have a low germination rate. This is because good vegetation cannot be achieved. Conversely,
When the thickness of the vegetation base material 30 is such that the germination of the plant seeds 31 is not hindered, the plant seeds 31 are included in the vegetation base material 30 from the beginning, and the spraying work can be performed only once. Is something that can be done.

When the spraying was divided into two times, the vegetation base material 30 for the first time was constituted to include sand, soil conditioner, fertilizer, bonding material and the like. In this case, as the sand, soil or mountain sand in the construction site is used,
Further, cement, lime or synthetic resin is used as the bonding agent. Park compost or perlite is used as the soil improving material, and, for example, superphosphate lime is used as the fertilizer.

More specifically, fertilizer is added to a mixture of cement, water and sand in a weight ratio of 1: 2: 26 to form a vegetation base material 30.
It is sprayed to the extent that 2 is hidden.

The second vegetation base material 30 is a plant seed 31 of a type suitable for vegetation of the slope 10 in addition to the above.
However, as the plant seed 31, Kentucky, weeping glass or the like is selected. The thickness of the vegetation base material 30 including the plant seeds 31 for the second time after construction is about 3 to 7 cm when the thickness of the vegetation base material 30 without the plant seeds 31 below is about 12 cm. preferable.

Needless to say, long fibers 32 are premixed in the vegetation base material 30 of the above two times as shown in FIGS. 3 and 4, but the long fibers 32 are made of peat moss. Such plant fibers, or chemical fibers having a continuous filament shape are used.

[0033]

As described above in detail, in the invention according to claim 1, as illustrated in the above embodiment, "plant seed 31, soil improving material, fertilizer, etc. for germination and growth thereof" A slope vegetation method for spraying mixed vegetation base material 30 onto the slope 10 to perform vegetation on the slope 10, which extends on the slope 10 in a direction orthogonal to the anchor shaft 21. Anchor 20 for slopes that integrates a blade 22
By driving a large number of these, the anchor 20 for these slopes
After forming a large number of weirs by the vane plates 22 on the slope 10 in a dispersed state, the vegetation base material 30 was sprayed onto the slope 10 located between the slope anchors 20 ”. There are features. Accordingly, it is possible to provide a slope vegetation method with a simple structure, which can prevent the vegetation base material from flowing down during the spraying construction and can surely prevent the runoff even after the construction.

Further, according to the slope vegetation method of the second aspect, the long fibers 32 are premixed in the vegetation base material 30 to be sprayed on the slope 10. Are entwined with the blades 22 of the anchors 20 for slopes, and the slopes 10 such as the vegetation base material 30 and the plant seeds 31 are
Can be more reliably fixed to, and the runoff and runoff of the vegetation base material 30 and the plant seed 31 during or after the construction can be reliably prevented.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing a state in which a large number of slope anchors are driven on a slope.

FIG. 2 is a plan view showing an arrangement example of each slope anchor in FIG.

FIG. 3 is a partial cross-sectional view when the present method is completed by spraying a vegetation base material.

4 is a partial cross-sectional view showing an enlarged main part of FIG.

FIG. 5 is an enlarged front view of a slope anchor used when carrying out this slope vegetation method.

FIG. 6 is a plan view of the slope anchor.

FIG. 7 is a side view (a) and a rear view (b) of the slope anchor.

[Explanation of symbols]

 10 Slope 20 Anchor for slope 21 Anchor shaft 22 Blade plate 23 Wing portion 30 Vegetation base material 31 Plant seed 32 Long fiber

Claims (2)

[Claims] 1. A slope vegetation method for spraying a plant seed, a vegetation base material mixed with a soil improving material, fertilizer, etc. for germination and growth of the plant seed onto the slope to perform vegetation on the slope. Then, on the slope, by driving a large number of slope anchors integrated with a blade plate extending in a direction orthogonal to the anchor axis, a large number of weirs formed by the blades of the slope anchors are sloped. A slope vegetation method, characterized in that the vegetation base material is sprayed onto slopes located between the slope anchors after being formed in a dispersed state on the slopes. 2. The slope vegetation method according to claim 1, wherein long fibers are preliminarily mixed in the vegetation base material sprayed on the slope.