JP2865624B2 - Slope protection greening structure - 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 protection greening structure.

[0002]

2. Description of the Related Art The conventional slope protection greening structure generally includes a structure in which a wire mesh is stretched on the slope and a structure in which mortar is sprayed. However, these structures obstruct the landscape or change over time (deterioration). In particular, mortar often suffers from peeling due to frost pillars and the like generated on the back of the mortar at low temperatures.

Accordingly, a new slope protection greening structure has been developed as disclosed in Japanese Patent Application Laid-Open No. 4-213625. As shown in FIG. 3 , the slope protection greening structure is configured such that a plurality of lattice frame fences 51 including a front wall 52 and a bottom wall 53 are sequentially stacked to secure the slope 54 with the soil. A vegetation greening sheet 55 is set inside the 52 to stop the phenomenon (erosion) of soil flowing out of the grids of the grid frame fence 51 due to rainwater, and the seeds carried on the vegetation greening sheet 55 are germinated. It is about greening. Reference numeral 56 denotes a plant for greening planted from through holes 57 formed in places on the sheet 55 for greening of vegetation, and 58 is a root system thereof.

[0004]

By the way, in the case of a cut slope made by cutting a slope, the cut soil and rocks are used by returning to the slope protection greening structure so as not to destroy the ecosystem. Is preferred. Therefore,
For example, when constructing the slope protection greening structure on a cut slope made from a rock slope, the crushed rock formed by crushing the rock slope is filled into the back side of the lattice fence.

In this case, a part of the crushed rock filled on the back side of the grid frame fence 51 of each step is moved forward by the weight of the crushed rock filled on the back side of the grid frame fence 51 above it. The crushed rock may be ejected (instability of the crushed rock), and the crushed rock that has been ejected may be pushed out of the grid frame
In order to push 1 out to the front side, the slope was sometimes distorted.

Therefore, an object of the present invention is not only to return the crushed rock to the slope protection greening structure and to use the crushed rock, but also to prevent the crushed rock from pushing the lattice frame fence to the front side. Another object of the present invention is to provide a novel slope protection greening structure capable of growing a greening plant between the crushed rocks to achieve greening and thereby improving the landscape.

[0007]

In order to achieve the above object, a slope protection greening structure according to the present invention has a horizontal bottom portion and an inclined slope portion formed by assembling metal bars in a grid. a plurality of lattice frame fence, and crushed rock are filled on the back side of the inclined surface portion, and the reinforcing fiber sheet is laid beneath the bottom portion perform the stabilizing function and draining function of crushing rock, soil inside the sack
Vegetation material packed and arranged in places of crushed rock
And planting for greening planted or planted inside the vegetation member
It is provided with a seed, a seedling or a cutting .

[0008] Here, as is well known, the crushed rock is formed by crushing a rock slope with a shovel or the like. Therefore, the size of the crushed rock naturally ranges from minute to more than several tens cm depending on the degree of crushing. It is present (things of 2 to 75 mm are also called gravel) and is not particularly limited. Also, as is well known, soil may be mixed with crushed rock depending on the cut slope. The crushed rock in the present invention includes crushed rock mixed with soil.

[0009] the bottom of the fabric bag is preferably exposed on the front side duck in one grating of the slope portion. This vegetation member can be installed so as to be in contact with the upper or lower surface of the reinforcing fiber sheet.

Here, the material of the cloth bag is not limited to a specific material as long as it has a required strength, and may be, for example, a natural fiber or an artificial fiber. In our trials, the reuse of used grain transport sack is most suitable for this application. This is because the used cloth bags for transporting grains are always generated in a large amount, and not only are the waste materials reused, but also they are functionally strong and have appropriate dimensions. The cloth bag is generally filled with soil at or near a construction site. The mouth of the cloth bag may be closed in any manner, for example, may be tied with a string, or may be heat-welded. This slope protection greening structure can be applied not only to the cut slope but also to the embankment slope, and not only the crushed rock but also the soil may be piled on the back side of the slope.

A vegetation greening sheet may be provided from the upper surface of the bottom portion to the rear surface of the slope portion. For vegetation greening
In order to expose the vegetation member to the front side in some places of the sheet
It is preferable to provide a through hole.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is embodied in a protective greening structure for a cut slope formed by cutting a rock slope will be described below with reference to FIGS.

In FIG. 1, reference numeral 1 denotes a grid frame fence for retaining a soil,
A horizontal bottom portion 2 is formed by bending a mesh formed by welding metal rods in a vertical and horizontal lattice at upper and lower central portions thereof.
And the inclined slope 3, the rear end of the bottom 2, and the slope 3
And a hook 4 connecting the upper ends of the two. The lattice frame fences 1 were used by sequentially stacking a plurality of them so that the slope portions 3 were continuous.

The left and right length of the standard retaining grid frame fence 1 used in this embodiment is about 2600 mm, the depth of the bottom part 2 is about 700 mm, and the slope length of the slope part 3 is about 600 mm (with respect to the bottom part 2). The inclination angle of the slope is 30 to 60 degrees). Further, the vertical metal bars 5 are about 150 mm apart from each other, and the horizontal metal bars 6
Are 200 to 300 mm in the bottom surface portion 2,
In the slope part 3, it is 100 to 150 mm. The diameter of each metal rod 5, 6 is 6 to 10 mm. Of course, these numerical values can be appropriately changed.

Reference numeral 7 denotes a reinforcing fiber sheet laid below the bottom portion 2, which is essential for stabilizing the crushed rock and performs a drainage function.

Reference numeral 25 denotes a crushed rock filled on the back side of the slope portion 3. In this embodiment, crushed rock formed by crushing a rock slope is used, and the crushed rock 25 forms the slope 11. Numeral 26 denotes vegetation members arranged at various places of the crushed rock 25, which are formed by packing a soil 28 in a cloth bag 27. In the present embodiment, a used grain transport cloth bag is reused as the cloth bag 27, and the mouth of the cloth bag 27 is tied with a cord 29. The soil 28 is appropriately added with a functional agent such as a fertilizer, a soil conditioner, and a molding agent. The bottom of each cloth bag 27 is exposed to the front side through one lattice of the slope 3.

14 is a seed for soil 28 inside the vegetation member 26,
It is a plant for greening planted or planted in the state of a seedling or a cutting, and has grown from the exposed portion of the vegetation member 26 to the front side. In the present embodiment, the astragalus,
Black-nosed azalea, azalea, azalea, Inugaya, Taiminchik,
Kannonchiku, pussy willow, pine, cedar, cypress, yashabushi, beech, sedgeberg, poplar and the like were used.
In addition, a functional agent such as a fertilizer, a soil conditioner, and a molding agent was mixed with the soil 28 and loaded into a deep place inside the vegetation member 26 to promote the growth of the plant for greening 14.

According to the present embodiment, the slope 3 of the lattice fence 1
Can be filled with crushed rock 25 formed by crushing a rock slope, for example. In addition, the vegetation members 26 are arranged at various places of the filled crushed rocks 25, and the greening plants 14 are planted or planted in the soil 28 inside the crushed rocks 25. Therefore, the greening plants 14 supply moisture and nutrients from the soil 28. You can receive and grow. Therefore, even on a slope mainly composed of crushed rock 25, which is usually difficult to revegetate, greening plants 14 can be grown between the crushed rocks 25 to achieve greening, thereby improving the landscape. it can.

The vegetation member 26 can be installed so as to be in contact with the upper or lower surface of the reinforcing fiber sheet 7 (see FIG. 2). According to this installation method, the reinforcing fiber sheet 7
The water that permeates and flows into the vegetation member 26 also penetrates into the inside of the vegetation member 26, so that the root system of the greening plant 14 planted in the vegetation member 26 can absorb the water, and promote the elongation of the root system Can be.

Further, a part of the crushed rock 25 filled on the back side of the lattice frame fence 1 of each stage is replaced with the lattice frame fence 1 of the upper stage.
In some embodiments, the reinforcing fiber sheet 7 laid under the bottom portion 2 of the grid frame fence 1 may be separated from the front side by the weight of the crushed rock 25 filled on the back side of the grid. Since the frame fence 1 is stopped, the crushed rock 25
Can prevent the lattice frame fence 51 from pushing out toward the front side (stabilization of crushed rock).

It should be noted that the present invention is not limited to the configuration of the above-described embodiment, and may be embodied with the following modifications without departing from the spirit of the invention.

(1) As shown by a two-dot chain line in FIG. 1, a vegetation greening sheet 8 is stretched from the upper surface of the bottom portion 2 to the rear surface of the slope portion 3. In places of vegetation greening sheet 8, plant
A through hole for exposing the raw member 26 to the front side is provided.
Is preferred. The vegetation greening sheet 8 has a function of assisting the growth of the greening plant, and the crushed rock 25
(Particularly finely crushed) can pass through the grid of the slope portion 3 and spill to the front side.

(2) The crushed rock 25 filled on the back side of the lattice frame fence 1 is appropriately mixed with, for example, soil around the site.

[0024]

As described in detail above, claims 1, 2 or
According to the slope protection greening structure according to the third aspect of the invention, not only can the crushed rock be returned to the slope protection greening structure and used, but also the phenomenon that the crushed rock pushes the lattice frame fence to the front side can be prevented. Can be. Also, greening between crushed rocks
Plant can be grown and planted for greenery.
Can be improved.

In addition to the above effects, according to the slope protection greening structure of the fourth aspect of the present invention, the root system of the plant for greening can help the root system to absorb moisture, and can promote the elongation of the root system.

Further, according to the slope protection greening structure according to the fifth or sixth aspect of the present invention, the growth of greening plants can be assisted.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a slope protection greening structure according to an embodiment of the present invention.

FIG. 2 is a perspective view of FIG.

FIG. 3 is a cross-sectional view of a conventional slope protection greening structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lattice frame fence 2 Bottom part 3 Slope part 5 Vertical metal rod 6 Horizontal metal rod 7 Reinforcement fiber sheet 8 Vegetation greening sheet 11 Slope 14 Greening plant 25 Crushed rock 26 Vegetation member 27 Cloth bag 28 Soil 29 String

Continuation of the front page (56) References JP-A-6-294132 (JP, A) JP-A-63-176527 (JP, A) JP-A-63-185838 (JP, U) JP-A-61-135946 (JP) , U) Japanese Utility Model Showa 50-142307 (JP, U) Japanese Utility Model Showa 61-160641 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) E02D 17/20 103 E02D 17/20 102

Claims (6)

(57) [Claims] 1. A plurality of grid frame fences comprising metal rods assembled in a grid and having a horizontal bottom surface and an inclined slope portion, crushed rock filled on the back side of the slope portion, and the bottom surface a reinforcing fiber sheet which serves the stabilizing function and draining function of the crushed rock is laid down parts, in places of the crushed rock will be soil is packed into the interior of the sack
A vegetation member arranged, and a greening plant planted or planted inside the vegetation member
A slope protection greening structure comprising a seed, a seedling or a cutting . 2. The slope protection greening structure according to claim 1, wherein the crushed rock is a mixture of soil. 3. The bottom of the cloth bag is formed of one of the slopes.
2. The method according to claim 1, wherein the child is exposed to the front side through the child.
Surface protection greening structure. 4. The vegetation member is mounted on the reinforcing fiber sheet.
2. The method according to claim 1, wherein the method is installed so as to contact the surface or the lower surface.
Surface protection greening structure. 5. A method according to claim 1, wherein the upper surface of the bottom portion is connected to the rear surface of a slope portion.
The vegetation revegetation sheet is stretched over the vegetation.
The slope protection greening structure described above. 6. The vegetation greening sheet toward the rear of the sloping portion from the upper surface of the bottom portion is stretched, the sheet for the vegetation greening
Penetration for exposing the vegetation member to the front side in some places
The slope protection greening structure according to claim 3, wherein a hole is provided.