JP3076898B2 - 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 slope greening method.

[0002]

2. Description of the Related Art Attention has been paid to various greening methods for the purpose of improving the slope. Above all, in order to effectively utilize waste by-products such as construction by-products and industrial waste, attempts have been made to create a vegetation base using vegetation base materials mixed with aggregates such as recycled asphalt.

[0003]

The vegetation base material containing the above-mentioned aggregate has a large amount of rebound loss of the aggregate when sprayed on a slope. Specifically, the rebound dross does not allow the aggregate to settle at the desired position on the slope, but almost falls below the slope, leaving only the fine particles attached and creating a solid vegetation base. Therefore, the meaning of mixing the aggregate is reduced by half. In addition, the aggregate that has fallen and deposited below the slope requires a separate removal operation, which makes the greening operation very complicated. In addition, rebound dross accumulates in the lower part of the slope or in the depressions, and places where there are many voids are formed. Further, the densely formed vegetation base has a uniform structure in which the soil is hard and has a suppressed root system development, so that the rooting of vegetation plants is slow, and the greening and covering are delayed. In addition, vegetation base materials containing a large amount of aggregate have a large amount of rebound loss, and it is economically inefficient to secure a sufficient spray thickness. When a vegetation base is formed using organic vegetation base materials that have been used in the past, the vegetation base has a physically uniform structure. We cannot live together.

The present invention has been made in view of the above points, and an object of the present invention is to make effective use of the rebound dross of the aggregate at the time of spraying the vegetation base material so that the aggregate portion of the aggregate and the vegetation base can be used. The slope revegetation method and the vegetation base that create a structure suitable for the growth of each vegetation with different growth characteristics on the slope by creating a structure close to natural soil by mixing the accumulation part of the timber in the vegetation base. To provide.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a slope greening method in which a vegetation base material is sprayed to form a vegetation base on a slope, and a water-permeable partition piece is set on the slope, While spraying a vegetation base material containing aggregate and accumulating and holding the aggregate on the upstream side of the partition pieces so that the thickness of the aggregate gradually increases toward the lower side of the slope, the layer of the vegetation base is This is a slope greening method characterized in that the thickness is formed substantially uniformly.
According to the present invention, in a slope greening method performed by spraying a vegetation base material to form a vegetation base on a slope, a water-permeable partition piece that forms a plurality of vegetation base material unit partition sections is installed on the slope. after spraying the vegetation base material containing aggregate to the vegetation base Zaitan position compartments, as the layer thickness of the aggregate toward the slopes downward gradually increases, upstream of the vegetation base material units compartments A method of revegetation on a slope, characterized in that a layer thickness of a vegetation base is formed substantially uniformly while accumulating and holding aggregates. Further, the present invention is a slope revegetation method characterized in that in the above-described slope revegetation method, a waste recycle material such as reclaimed asphalt, recycle concrete, or recycle plastic is used as an aggregate. Further, according to the present invention, in any one of the above-described slope revegetation methods, after spraying a vegetation base material containing aggregate in a state where an upper side of a partition piece is exposed, an organic base material or the like is placed on the vegetation base material. This is a slope revegetation method characterized by spraying base materials of different properties.

[0006]

First Embodiment A vegetation base of the present invention will be described below with reference to the drawings.

<A> Overall Structure The vegetation base 1 is composed of a partition 2, a vegetation base material 3, and an aggregate 4 contained in the vegetation base 1.

<B> Partition Piece The partition piece is a water-permeable member laid on the slope 5 as a foundation work. The partition piece may basically have a structure capable of holding and accumulating the aggregate 4 contained in the vegetation base material 3 sprayed on the slope 5. Therefore, as a partition piece, a linear shape, a substantially arc shape, which can be erected perpendicularly to the slope in the vertical direction of the slope,
It is conceivable to employ a plate-like member of any shape such as a circle, a substantially V-shape, a wavy shape, and a substantially U-shape. As a material of the partition piece, a known material having water permeability such as a net, a perforated plate, or a cloth may be used. For example, polyethylene may be used. In the present embodiment,
An example of forming a plurality of vegetation base material unit partition sections 21 (hereinafter, referred to as partition sections 21) surrounded by a plurality of partition pieces 2 as shown in FIG. 2 is disclosed. The planar shape of the partition section 2 surrounded by the partition pieces 2 may be a known shape such as a rhombus, a hexagon, and a circle, and the height h thereof can be arbitrarily changed depending on site conditions and the like. Typical numerical values of the height h of the partition 2 may be a maximum value of about 10.0 cm and a minimum value of about 0.5 cm. In the present invention, a range of 0.5 to 3.0 cm is preferable. Further, considering that the opening dimension of the partitioning section 21 may be about 5.0 cm to 100.0 cm, a range of 10.0 cm to 50.0 cm is preferable.

<C> Vegetation base material As the vegetation base material 3, a known base material can be adopted. That is, the vegetation base material 3 is mainly composed of known materials such as soil improvement materials, binders, fertilizers, and seeds. In the revegetation method of the present invention, the vegetation base 1 is sprayed with the above-mentioned vegetation base 3 and the aggregate 4 described later added to the slope.
Create

<4> Aggregate As the aggregate 4, waste materials such as recycled asphalt, recycled concrete, and recycled plastic produced from construction by-products, industrial waste, or general waste are used. It is important that the above-mentioned aggregate 4 is adjusted to a predetermined particle size before use. The particle size of the aggregate 4 is 5.0 mm to 15.0.
It is preferably about mm, but may be more. It is needless to say that the aggregate 4 may be a natural aggregate or an artificial aggregate.

[0011]

[Construction method] The slope greening method will be described below with reference to the drawings.

<A> Partitioning Step of Partitioning As a foundation work for forming the vegetation base 1 on the slope 5 for greening, first, the partitioning piece 2 is set on the slope 5. The partition pieces 2 installed on the slope 5 form a plurality of vegetation base material unit partition sections 21 (hereinafter, referred to as partition sections 21) as shown in FIG. The partition piece 2 is erected in the vertical direction of the slope 5 and is firmly fixed to the slope 5 by an anchor pin (not shown) or the like, and is installed so as not to slip off. At this time, partition 2
If is formed of a flexible net, it is possible to cover along the undulation of the slope 5. In addition, it is of course possible to lay a group of partitions 21 formed by combining a plurality of partition pieces 2 as shown in FIG.

<B> Spraying step of vegetation base material Subsequently, as shown in FIG. 1, the vegetation base material 3 is sprayed on the slope 5 on which the partition pieces 2 are installed. The vegetation base material 3 is such that a predetermined amount of the aggregate 4, the soil improving material, the binder, the fertilizer, the seeds and the like stored in the storage tank is charged into the spraying machine 6, and is fed from the spraying machine 6 to the spraying nozzle 62 through the hose 61. . In this case, the vegetation base material 3 may be either a wet type in which water is added at a pressure feeding source or a dry type in which water is added by a spray nozzle. When the vegetation base material 3 is sprayed on the slope 5, the aggregate 4 contained in the vegetation base material 3 hits the slope 2 and rebounds. The rebound aggregate 4
Each of the partition sections 21 formed by the partition pieces 2 covering the slope 5 is hooked and accumulated. At this time, since the aggregate 4 is the heaviest in the composition of the vegetation base material 3, it aggregates particularly below the slope 5 as shown in FIG. From this, by using the rebound of the aggregate 4 as shown in FIG. 3, the thin aggregate layer 41 covering the slope 5 and the slope 5 A vegetation base 1 having a thick aggregate layer 42 that has accumulated a lot on the lower side of the vegetation can be formed. At this time, a large number of voids are formed in the portion where the aggregate 4 is accumulated, but the other portion is filled with the vegetation base material 3, so that the dried portion where the aggregate 4 is accumulated in the same partition section 21. Then, a water retaining portion where the vegetation base material 3 is accumulated is formed. A large number of partition sections 2 having the drying section and the water holding section
By combining them, the structure of the vegetation base 1 becomes a structure close to a complex natural soil. Thereafter, a known organic base material (not shown) may be sprayed on the upper surface of the vegetation base 1 formed by the vegetation base material 3. As the organic base material, for example, a material mainly composed of compost compost obtained by sufficiently fermenting and maturating bark, peat moss, livestock dung, sewage sludge, and the like can be used.

[0014]

Second Embodiment In contrast to the slope greening method disclosed in the first embodiment, a vegetation base having a two-layer structure as shown in FIG. 4 may be formed. The greening procedure in this case is as follows. <B> First, the partition 2 described in the first embodiment is
Lay on top. It is conceivable that the height of the partition 2 at this time is a height suitable for the on-site situation, for example, about 10.0 cm. <B> A base is formed by spraying the vegetation base material 3 mixed with the aggregate 4 from above the partition piece 2. At this time, when the height of the partition piece 1 is 10.0 cm as described above, the spray thickness of the vegetation base material 3 is about 5.0 cm. <C> On the layer of the 5.0 cm thick vegetation base material 3 described above,
For example, seedlings 7, bulbous plants, and the like are installed. Sapling 7
Is placed at the position where the aggregates 4 are accumulated and fixed with a raspin 71 or the like. <D> Vegetation base material 3 with seedlings 7
A base material having different properties such as an organic base material 8 or a sand base material is sprayed thereon. The organic base material 8 is sprayed to a predetermined thickness including the upper part of the partition 2 remaining when the vegetation base material 3 is sprayed, thereby completing the vegetation base 9 having a two-layer structure. At this time, the exposed upper side of the partition 2 is buried in the organic base material 8 to support the organic base material 8.

[0015]

As described above, the present invention has the following effects. <A> The vegetation base material containing aggregate can be aggregated on the slope of the vegetation base and on the lower side of the slope due to the rebound dross of the aggregate when spraying the slope. It is possible to create a vegetation base of close complexity. <B> In addition, the rebound dross makes it possible to accumulate aggregates particularly below the partition units of the partition pieces, and since the aggregate is continuous across the partition sections, it is unnecessary to include the aggregates in the aggregate group. Moisture (hydraulic water) can be efficiently drained to the lower side of the slope along the aggregate, and by forming appropriate gaps of large and small sizes, water retention and air permeability required for plants can be imparted. <C> Due to the accumulation of aggregates, there is a gap below the vegetation base, and the roots of the vegetation grow three-dimensionally along the slope along this gap and can be rooted over a wide area. Growth is good, and erosion of the sprayed vegetation base can be prevented. <D> A dry structure formed by the accumulation of aggregates and a water retaining portion formed by the accumulation of vegetation base materials are formed in the vegetation base, and by mixing these, a complex structure close to natural soil can be obtained. As a result, it is possible to introduce a combination of various vegetation plants having different growth characteristics, and the vegetation transition from the surroundings is smoothly performed, so that the natural restoration of the slope where the greening has been performed can be promptly performed. <E> The thickness of the vegetation base material can be sufficiently secured even by spraying with the partition pieces, and the introduction of seedlings (planting) can be sufficiently performed. <F> Since rebound aggregate can be used effectively, economical construction is possible even when the spray thickness is secured.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a slope greening method according to the present invention.

FIG. 2 is an explanatory view of a partition used in a slope greening method.

FIG. 3 is a cross-sectional view of the vegetation base according to the first embodiment.

FIG. 4 is an explanatory diagram of a vegetation base according to the second embodiment.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E02D 17/20

Claims (4)

(57) [Claims] Claims 1. In a slope greening method in which a vegetation base material is sprayed to form a vegetation base on a slope, a water-permeable partition piece is installed on the slope, and then a vegetation base material including aggregate is removed. Spraying, so that the layer thickness of the aggregate gradually increases toward the lower side of the slope,
While collecting and holding aggregates on the upstream side of the partition,
A slope revegetation method, characterized in that the thickness of the vegetation base is almost uniform . 2. A slope revegetation method in which a vegetation base material is sprayed to form a vegetation base on a slope, and a water-permeable partition piece forming a plurality of vegetation base material unit partition sections is installed on the slope. after, as sprayed vegetation base material containing aggregate to the vegetation base Zaitan position compartments, the layer thickness of the aggregate toward the slopes downward gradually increases,
Aggregate is collected on the upstream side of the vegetation base material unit partition section.
While maintaining it, create a layer thickness of the vegetation base approximately uniform.
The slope greening method. 3. The slope reclaiming method according to claim 1, wherein a waste material such as recycled asphalt, recycled concrete, or recycled plastic is used as the aggregate. Greening method. 4. The slope greening method according to any one of claims 1 to 3, wherein the vegetation base material including the aggregate is
A slope revegetation method, characterized in that a base material having a different property such as an organic base material is sprayed on the vegetation base material after the upper surface of the partition piece is sprayed while exposing the upper side thereof.