JPH11323943A - Protective afforesting structure of slope face, wall surface and shore surface - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a protective afforesting structure of a slope face, the wall surface and the shore surface capable of being reliably afforested by securing soil required to germinate/grow an afforesting plant in the vicinity of the front wall part of a lattice frame fence. SOLUTION: A protective afforesting structure of the shore surface 41 is constituted of a single stage being composed of the inclined front wall part 6 and the horizontal bottom wall part 7 made of a reinforcement lattice and containing a lattice frame fence 5 arranged in front of the shore surface l, vegetation soilbag 17 attached to the front side of the front wall part 6, water stop soilbag 10 attached to the rear side of the front wall part 6 and rubbles stones 11 filled between the water stop soilbag 10 and the shore surface 41. This stage is constructed in plural stages by being stacked upward from below.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protection greening structure for slopes, walls, shores, and the like using a lattice fence.

[0002]

2. Description of the Related Art (1)
As one of conventional protection greening structures for slopes, as shown in FIG. 21, a grid which is composed of an inclined front wall 56 made of a reinforced grid and a horizontal bottom wall 57 and is installed in front of the slope 51. One step is constituted by the frame fence 55 and the embankment material 59 filled between the lattice frame fence 55 and the protection greening target surface 51, and the steps are stacked from bottom to top to form a multi-stage. The structure is known. This protective greening structure can be constructed even on steep slopes and has excellent features such as good workability.

[0003] As the embankment material 59, in order not to disrupt the ecosystem, soil and rocks obtained by cutting off the slopes of the site are often returned and used, and rocks 5 to tens of cm in size are used.
9a in many cases. In addition, embankment material 5 transported from other places
Even in the case of 9, the rock 59a is often included. The embankment material 59 is supplied between the protection greening target surface 51 and the lattice frame fence 55 by a shovel car, but it is not possible to properly fill the corner just behind the front wall portion 56 with the shovel car alone. difficult. Therefore, the operator immediately fills the rear side of the front wall portion 56 by scooping and throwing the embankment material 59 into a shovel.

However, when the embankment material 59 is thrown away with a shovel, the rock 59a contained in the embankment material 59 flies farther and rolls, so that only the rock 59a is located immediately behind the front wall portion 56. They gather in one place. For this reason,
In the vicinity of the front wall 56, there is a problem that the soil necessary for germination and growth of the plant for greening is insufficient.

[0005] Therefore, an object of the present invention is to provide a protective greening structure using a grid frame fence which has excellent features such as being able to be constructed even on steep slopes and having good workability. The soil required for germination and growth of plants can be secured,
An object of the present invention is to provide a protective greening structure such as a slope, a wall surface, a shore surface, and the like that can surely achieve greening.

(2) Conventional shore protection structures (bank protection)
Concrete revetments, which are formed by laying precast concrete revetment blocks on the shore or by casting concrete in-situ, have been common. Concrete revetment is excellent in its main purpose of protecting the shore, but it has the following problems. The workability is poor in terms of transporting heavy revetment blocks, leveling the shore surface, preparing concrete, placing and curing the work. The revetment blocks and concrete materials, which are materials, must be transported from a distance to the site, and the soil and rocks at the site cannot be used effectively. Concrete revetment
It is artificial and lacks the view of nature. It was disadvantageous in terms of landscape because it was not considered for greening, or it was difficult to achieve greening, and it was not a good habitat for aquatic organisms.

The object of the present invention, particularly on the shore surface, is that the workability is good, the soil and rocks at the site can be used effectively, and since the soil and rocks are natural, they have a rich natural view and can be greened which has been difficult in the past. The purpose of the present invention is to provide a protective vegetation structure on the shore surface that provides an excellent landscape and a good habitat for aquatic organisms.

[0008]

SUMMARY OF THE INVENTION A protective greening structure for slopes, walls, shores and the like according to the present invention comprises a sloped front wall and a horizontal bottom wall made of a reinforced grid, and a slope, wall, A lattice fence installed in front of the surface to be protected, such as a shore surface, and a filler filled between the lattice frame fence and the surface to be protected, and the front, rear, or both sides of the front wall One step including an attached vegetation sandbag is configured, and the steps are stacked from bottom to top to construct a plurality of steps.

Here, the surface to be protected and greened is not particularly limited, and the following (A1), (A2) and (A3) can be exemplified. (A1) Slope; rock slope, concrete / mortar spray slope, cut slope, embankment slope, etc. can be exemplified. (A2) Wall surface: a wall surface of a concrete structure such as a retaining wall or a dam can be exemplified. (A3) Shore surface: A shore surface such as a waterway such as a river or an artificial canal, a pond or a lake can be exemplified. The condition of the shore surface may be a local ground or a concrete revetment already constructed. The angle of inclination of these protection greening target surfaces with respect to the horizontal is not particularly limited. Particularly in the case of a shore surface, about 15 to 60 degrees is preferable.

[0010] It is preferable that the greening sheet is laid on the rear side of the front wall portion (more preferably also on the upper surface of the bottom wall portion) so that the greening sheet through which the greening plant can penetrate during growth preferentially abuts. The greening sheet is used to prevent the filler from spilling and scouring until the roots of the greening plant grow from the vegetation sandbag to the filler, thereby ensuring greening. Paper, biodegradable material sheets and the like. Biodegradable material refers to a material that is decomposed and disappeared by microorganisms (such as bacteria, filamentous fungi, and actinomycetes) in the soil.
Examples include starch-based compounds, protein-based compounds, vinyl emulsion-based compounds, polylactic acid-based compounds, blends of starch and resin, and at least one selected from these can be used. After the plant for greening grows and the construction surface is stabilized, the biodegradable material sheet is decomposed by microorganisms in the soil and eventually disappears because the shape cannot be maintained.

A reinforcing sheet may be laid below the bottom wall. The reinforced sheet serves to stabilize the lattice frame fence and the filler, and is not particularly limited.
2) can be exemplified. (B1) Geotextiles made of fiber materials; knitted fabrics, woven fabrics, nonwoven fabrics, combinations thereof, and the like can be exemplified, and thick and high-strength nonwoven fabrics are preferred. (B2) Geotextile-related products made of non-fiber materials;
Examples include a geonet formed by fusing the extruded resin strands in a mesh form, a geogrid formed by stretching a perforated resin sheet, and the like, and preferably a geogrid whose strength is increased by stretching. Geogrids include uniaxial stretching and biaxial stretching. These reinforced sheets may be provided in each stage, or may be thinned out (for example, every other stage).

It is preferable that the bottom wall portion of the reinforcing sheet is locked by a locking member. The locking member is not particularly limited, but includes a stake that engages with both the reinforcing sheet and the bottom wall, a staple that joins the reinforcing sheet and the bottom wall, and a wire that joins the reinforcing sheet and the bottom wall. Can be illustrated. Furthermore, the end of the reinforcing sheet can be fixed to the surface to be protected and greened. In this case, the reinforcing sheet has the same function as the next anchor. The fixing means is not particularly limited, and examples thereof include an anchor attached to the surface to be greened. The shape and length of the anchor can be appropriately determined according to the surface to be greened.

[0013] An anchor may be fixed to the surface to be protected and greened, and a lattice frame fence may be connected to the anchor by a connecting member.
The movement of the grid frame fence and the filler can be strongly prevented. The shape and length of the anchor can be appropriately determined according to the surface to be protected and greened. The connecting material is not particularly limited as long as it has sufficient strength to connect and hold the grid frame fence to the anchor, and examples thereof include a metal wire, a metal chain, a synthetic resin rope, and a glass fiber rope. How to connect the anchor and the connecting material,
In a mode in which a locking portion is provided on the anchor and one end of the connecting member is directly connected to the locking portion, a mounting member extending along the surface to be protected and greened is fixed to the anchor, and one end of the connecting member is connected to the mounting member. An indirect connection to the anchor by connecting to the anchor may also be possible. The mounting material is not particularly limited, and examples thereof include a rod material, a pipe material, an angle material, and a rail material.

[0014] It is preferable that a water-stopping member for stopping the flow of water is interposed between the vegetation sandbag and the filler and behind the front wall. The water-stopping member is not particularly limited, but the following (C1) and (C2) can be exemplified. (C1) Hydrostatic sandbag with soil put in a bag. (C2) The sheet is covered with soil. You may add chestnut stone to this soil. The soil used for these water stopping members is not particularly limited.

The filler is not particularly limited, but the following (D1), (D2) and (D3) can be exemplified. (D1) Kuriishi: The size of Kuriishi is not particularly limited, and includes large crushed rocks to gravel of about 2 to 75 mm. (D2) Embankment material: The embankment material may be only soil, but may be soil mixed with rock, or further mixed with clinker ash, fly ash, asphalt waste, and the like. The embankment material is preferably soil at the construction site, but may be soil carried from another place. (D3) Filling material consisting of rubble stone filled near the lattice fence and embankment filled near the surface to be protected.

It is preferable that the vegetation soil is mixed with the rubble stone of the above (D1) or (D3). This is to make the mixed layer of Kuriishi and vegetation soil work as a vegetation base. Examples of a method of forming the mixed layer of the rubble stone and the vegetation soil include a method of pouring the vegetation soil in a slurry state into the rubble stone, a method of watering, and the like. The soil of the vegetation soil is not particularly limited.

An impermeable sheet may be laid on the surface to be protected and greened. In particular, when the surface to be protected and greened is the shore of the ground, the impermeable sheet prevents flooding and scouring. The impermeable sheet is not particularly limited, and examples thereof include sheets made of resin, rubber, resin-impregnated cloth, and the like.

The vegetation sandbags may be attached to either the front side, the rear side, or both the front and rear sides of the front wall portion. However, if the surface to be protected and greened is a shore surface exposed to flowing water such as a river, the front surface portion may be provided. It is preferable to be provided only on the front side of the wall. Vegetation sandbags on the shore surface may need to be considered as temporary until vegetation is established due to the risk of runoff due to running water erosion. If it will eventually flow away, it may be preferable to have it only on the front side of the front wall since the structure on the rear side of the front wall is not broken.

The bag for the vegetation sandbag is not particularly limited, and may be a bag made of a knitted, woven or nonwoven fabric made of natural fibers or synthetic fibers, a bag made of a synthetic resin sheet, or a bag made of a biodegradable material. Can be illustrated. The vegetation sandbag is preferably formed flat using a flat bag so as to be easily attached to the front wall (particularly the front side). The flat vegetation sandbags can be provided as a single layer or as a double layer. Also,
It is preferable to sew the front and rear surfaces of the flat bag in a quilted shape at important points in order to prevent the soil from being deflected downward by its own weight inside the flat bag.

The soil used for the vegetation sandbag is not particularly limited, but is preferably fertile soil, and further includes a fertilizer, a soil conditioner,
Preferably, a water retention agent, artificial soil or a combination thereof is added.

The means for attaching the vegetation sandbag to the front wall (particularly the front side) is not particularly limited, but the following mode (E1)
(E2), (E3), (E4) and (E5) can be exemplified. (E1) A mode in which the mounting holes provided in the bag of the vegetation sandbag are directly hooked and mounted on the reinforcing bar lattice of the front wall. (E2) A mode in which a mounting hole provided in a bag of a vegetation sandbag is mounted to a reinforcing grid of a front wall portion via a mounting tool. It is preferable that the mounting holes (E1) and (E2) be reinforced by eyelets or the like. (E3) A mode in which the vegetation sandbag is attached by hooking or piercing a hook provided on the front wall. (E4) A mode in which the vegetation sandbags are attached to the front wall with a wire or the like. (E5) The vegetation sandbags, the waterproofing member on the rear side of the front wall, the filler,
A mode in which a pile is driven into the riverbed to fix it.

Preferably, seeds, seedlings or cuttings of a plant for greening are planted on the vegetation sandbag. Greening plants suitable for the waterside include asaza, iris, rush, omodaka, oyster fowl, cattail, hosta, kohone, kogama,
Lily of the valley, egyptian, sagikyo, siberus, simakansuge, simaftoi, shoubu, water lily, sekisho, seri, lotus, hanashobu, sheep, squirrel,
Mizubasho, Misohagi, Tokusa, Nikko-Kisuge, Yukinoshita, Water Hyacinth, Kishobu, Water Poppy, Umebachisou, Obananareisou, Klinsou, Koyabuki, Juzdama, Kyojokama, Kojiji, Negima, Negima Negima , Spiderfish, Mizukanna, Kwai,
Examples include Zazensou, Makomo, Mizutranoo, Mitsugashiwa, Mikuri, Junsai, Hishi, Tochikagami, Hirumushiro, Ebimo, Chromo, Sekishomo and the like.

Greening plants have long roots (for example, 30 cm).
As described above, it is preferable that they grow. This is because the plant for greening is allowed to penetrate from the vegetation sandbags to the filling material to establish permanent vegetation.

In addition, another invention can be applied particularly to the shore surface, and the protective greening structure for the shore surface according to the other invention is a shore surface having a sloped front wall portion and a horizontal bottom wall portion made of a reinforcing steel grid. Frame fence installed in front of the surface, filler filled between the grid frame fence and the shore, and filler and shore attached to the front, rear or both front and rear sides of the front wall One step is provided with a scour-preventing member that prevents scouring by running water, and at least one of the filler and the scour-preventing member includes soil, and the steps are stacked from bottom to top to form a plurality of steps. It is characterized by being constructed.

Although the scouring preventing member is not particularly limited, the following (F1), (F2), (F3) and (F4) can be exemplified. (F1) The vegetation sandbag (F2) The water-stopping material (F3) The greening sheet (F4) A snake basket consisting of a wire mesh basket filled with rock

In each of the above inventions, the inclination angle formed by the front wall portion and the bottom wall portion can be set arbitrarily in accordance with the inclination angle of the surface to be protected and greened. Particularly in the case of a shore surface, about 15 to 60 degrees is preferable. In addition, the inclination angle may be constant in all stages, but may be set to be larger for each stage or for a plurality of stages as it goes to the upper stage. Specifically, the following modes (G1), (G2), and (G3) can be exemplified.

(G1) The inclination angle of the front wall of the first stage (lowest stage) is, for example, 60 degrees (or 40 degrees), and the inclination angles of the front walls of the second stage or more are 62 degrees, 64 degrees, and 66 degrees, respectively. Degrees, 68 degrees ...
(Or 42, 44, 46, 48 ...)
An aspect in which each step is set to increase by 0.5 to 10 degrees. The increment of the inclination angle may be constant between the stages or may be changed in the middle. For example, in the same example, 60 degrees, 64 degrees,
67 degrees, 69 degrees, 70 degrees ... or 40 degrees, 44 degrees,
47 degrees, 49 degrees, 50 degrees, etc. (G2)
The inclination angle of the front wall of the first to third steps is, for example, 60 degrees (or 40 degrees), and the inclination angle of the front wall of the fourth to sixth steps is 6 degrees.
An aspect in which the angle is set to increase by 1 to 10 degrees for each of a plurality of stages, such as 4 degrees (or 44 degrees). The increment of the inclination angle may be constant between the stages or may be changed in the middle. (G3) An embodiment in which the above embodiment (G1) and embodiment (G2) are mixed.

Also, a part of the reinforcing bar constituting the lattice frame fence (for example, a part requiring particularly high strength) may be thicker than other reinforcing bars. Thereby, it is possible to prevent a phenomenon in which a part of the rebar is bent and deformed to the front side due to the pressure of the filler or the like.

When the surface to be protected and greened is a slope or wall that is not exposed to flowing water such as a river, the front side of the front wall portion (when the vegetation sandbag is provided on the front side of the front wall portion, the front side of the vegetation sandbag) )
Preferably, a spray layer containing artificial soil, seeds and the like is spray-formed. The spray layer is formed by spraying materials such as artificial soil, seeds, fertilizer, a curing agent (coagulant for stabilizing the spray layer) and a soil activator (for activating microorganisms) into water. Approx.
A thickness of about 30 to 100 mm by a so-called "thick layer base material spraying method" in which a 0 mm spray layer or a similar material is sprayed dry.
Spray layers (or more) can be exemplified. Seeds are appropriately selected according to soil at the construction site, construction season, weather conditions, and the like. The spray layer may be a single layer or a plurality of layers.

[0030]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS << First Embodiment >> FIGS. 1 and 2 show a protective greening structure of a rock slope according to a first embodiment of the present invention. The protective greening structure is constructed by the following steps. I have.
The rock slope 1 is, for example, a steep slope of about 60 degrees.

[Installation process of lattice frame fence] A reinforcement sheet 3 is laid on the site 2 in front of the lower end of the rock slope 1, and a required number of lattice frame fences 5 are arranged side by side on the reinforcement sheet 3. FIG.
As shown in (and FIG. 7 described later), the grid frame fence 5 includes an inclined front wall portion 6 and a horizontal bottom wall portion 7. As an example of a manufacturing method, a reinforcing bar is welded in a vertical and horizontal grid shape (specifically, as shown in FIG. 7). The reinforcing grid is formed by bending a reinforcing bar grid formed by arc welding at the center. The upper end of the front wall 6 and the rear end of the bottom wall 7 may be connected by a connecting rod with a hook or the like (see FIG. 6 of the fifth embodiment). The reinforced sheet 3 is not limited to a specific material, and examples thereof include a thick nonwoven fabric, a woven fabric, and a net. The reinforcing sheet 3 is spread toward the rock slope 1 beyond the rear end of the bottom wall 7. Reference numeral 15 denotes a pile for fixing the bottom wall 7 of the lattice frame fence 5 to the reinforcing sheet 3. The distance between the front wall 6 of the lattice frame fence 5 and the rock slope 1 is not particularly limited, and is, for example, about 2000 to 5000 mm in the present embodiment.

The dimensions and the like of the lattice frame fence 5 used in the present embodiment are as follows, but are merely examples, and the dimensions and the like are appropriately changed according to the construction site. Angle of inclination of front wall 6 with bottom wall 7: about 60 degrees Length of inclination of front wall 6: about 600 mm Depth of bottom wall 7: about 600 mm Left and right length of front wall 6 and bottom wall 7: about 2600mm Diameter of reinforcing bar: about 10mm Grid pitch of reinforcing bar grid: 100 to 300mm

[Greening sheet laying step] A slightly rough greening sheet 8 is laid on the rear surface of the front wall portion 6 of the lattice frame fence 5 and the upper surface of the bottom wall portion 7. It is preferable that the upper end of the greening sheet 8 be slightly left behind and temporarily suspended on the front surface of the front wall portion 6 (not shown). The greening sheet 8 is not limited to a specific material, and examples thereof include a woven fabric and a nonwoven fabric.

[Step of Arranging Vegetable Sandbags and Filling Embankment Material] One stage of vegetative sandbags 17 are arranged in a horizontal row toward the rear surface of the front wall 6 of the lattice frame fence 5. The vegetation sandbag 17 is formed by putting a mixture of soil and fertilizer, a soil conditioner, a water retention agent, artificial soil, seeds, and the like in a permeable bag. Then, between the vegetation sandbag 17 and the rock slope 1, the embankment material 9 made of the soil at the construction site as a filler is filled up to the height of the vegetation sandbag 17. Since the embankment material 9 contains the rock 9b, as described above, when the worker throws the rock with a shovel, the rock 9b gathers immediately behind the vegetation sandbag 17, but the front wall 6
Can be prevented from gathering behind The embankment material 9 is compacted by rolling with an impact roller or the like. 1 and 2 show the upper surface 9a of the compacted embankment material 9.

The above operation is repeated two to four steps to fill the embankment material 9 up to the height of the upper end of the front wall 6. The remaining upper end of the greening sheet 8 is placed on the upper surface of the embankment material 9. The end of the uppermost reinforcing bar may be bent backward, and the upper end of the greening sheet 8 may be pressed. This forms the first stage.

[Multi-Step Repetition Step] On the upper surface of the embankment material 9, the above-described steps of setting the lattice frame fence, laying the greening sheet, arranging the sandbag and filling the embankment material are performed to form the second stage. By repeating this operation from the bottom to the top as many as necessary, a desired plurality of stages can be constructed. In the uppermost lattice frame fence 5, the upper end of the vertical reinforcing bar of the front wall portion 6 is bent rearward and downward (not shown).

[Spraying Layer Forming Step, etc.] A spraying layer 16 containing artificial soil and seeds is sprayed and formed on the front wall 6 and the front surface of the greening sheet 8 emerging through the front wall 6. In this embodiment, the thickness is about 60 mm by the “thick layer base material spraying method”.
Was formed. In this embodiment, seedlings or cuttings of the plant 18 for greening are planted on the vegetation sandbag 17.

According to the protection greening structure of the rock slope 1 constructed by the above construction method, the use of the lattice frame fence 5
Can be installed even on steep slopes.No heavy equipment is required for construction.
It is capable of manual work, easy to construct, does not require much manpower, has good workability, shortens the construction period, can easily cope with a curved rock slope 1, and uses the soil at the site as an embankment material 9 Many effects such as being available can be obtained.

Further, since the vegetation sandbags 17 are provided behind the front wall portion 6 of the lattice frame fence 5, the soil of the vegetation sandbags 17 is useful for vegetation, and the embankment material 9 is provided behind the front wall portion 6. Rocks 9b
Can be prevented from gathering unevenly, and high quality soil can be secured. Therefore, the seeds of the plant for greening included in the soil 14, the plant 18 for greening planted in the soil 14, the seeds adhered on site, etc. grow well, and it is possible to achieve reliable greening. The vegetation sandbag 17 contains fertilizer, soil conditioner,
Greening can be promoted because a water retention agent, artificial soil, seeds and the like are included.

The spray layer 16 containing seeds and artificial soil
By spraying, the germination and growth of the seeds are better than in the case where the seeds are simply incorporated in the sheet for greening, and primary vegetation by germination of seeds such as western turf can be achieved in a short period of time. it can. After that, the woody plants grow.

The reinforcing sheet 3 spreads in the embankment material 9 beyond the bottom wall portion 7, and serves to anchor the grid frame fence 5 to the embankment material 9 and to stabilize the embankment material 9. In particular, the reinforced sheet 3 made of a thick nonwoven fabric has high strength, so that it is not easily cut even by earth pressure, and exhibits a strong reinforcing action. Also,
The reinforcing sheet 3 made of a thick nonwoven fabric has a function of guiding the water contained in the embankment material 9 to the front and draining the water by the capillary action of the fiber material, so that the embankment material 9 is soft even if there is a large amount of rainfall. There is no risk of becoming.

Second Embodiment Next, FIG. 3 shows a protective greening structure of a rock slope 1 according to a second embodiment, in which an anchor 32 is fixed to the rock slope 1, and A point where the grid frame fence 5 is connected by the connecting material 34;
The inclination angle formed by the front wall portion 6 and the bottom wall portion 7 is set to be larger toward the upper side (specifically, the inclination angle of the first stage (the lowest stage) is, for example, about 50 degrees, and the inclination angle of the second stage or more is set. Is 1 to 1
Increase by 5 degrees. ) Is different from the first embodiment.

In this embodiment, a large number of mounting holes 31 are vertically and horizontally spaced on the rock slope 1 and an anchor 32 made of a metal rod is inserted into each mounting hole 31, and mortar, adhesive,
It is fixed with a fixing material 33 such as a resin. A ring-shaped locking portion is formed at the front end of the anchor 32.

After the grid frame fence 5 is installed, the grid frame fence 5 is connected to the anchor 32 by the connecting member 34. Connecting material 34
Is an assembly, which comprises two hooks 35 made of a thick metal plate and a wire 36 formed of a metal stranded wire connecting the hooks 35. If each hook 35 is hooked on the locking portion between the grid frame fence 5 and the anchor 32, the grid frame fence 5 can be easily connected to the anchor 32. The connection point of the lattice frame fence 5 may be the front wall part 6 or the bottom wall part 7, but a horizontal reinforcing bar at the lower part of the front wall part 6 or a horizontal reinforcing bar of the bottom wall part 7 is appropriate. It is preferable to have at least two places.

According to the present embodiment, in addition to the effects of the first and second embodiments, even if the depth of the embankment material 9 is reduced to, for example, about 500 mm, the grid connected to the anchor 32 by the connecting material 34 The frame fence 5 holds the embankment material 9 and prevents its collapse. Therefore, even if there is a gutter, a road, a land boundary, etc. just in front of the lower end of the rock slope 1, and the width of the land 2 is narrow, construction can be easily performed.

Further, by setting the inclination angle of the front wall portion 6 as described above, the inclination angle of the front wall portion 6 can be reduced on the lower side where the earth pressure is large, and the force withstanding the earth pressure of the embankment material 9 can be reduced. Can be secured. In addition, the inclination angle of the front wall portion 6 can be increased as the earth pressure becomes lower, so that the upper shoulder (not shown) moves forward, and the effective area of the top end surface can be increased.

Third Embodiment Next, FIG. 4 shows a shore protection greening structure according to a third embodiment, which is applied to a shore 41 of a river 40 instead of the rock slope 1. The second embodiment differs from the first embodiment only in that the spray layer 16 is omitted. Reference numeral 42 denotes the water surface, which is constructed so that the lower several lattice frame fences 5 are immersed below the water surface. The rebar of the lattice fence 5 is hot-dip galvanized for rust prevention. The protective greening structure of the shore surface 41 is used in a state where the first stage (or the first to several stages) is immersed below the water surface 42 of the river.

According to the present embodiment, not only the protection of the shore surface 41 (bank protection) but also the greening of the shore surface 41 can be achieved.
More specifically, the vegetation sandbags 17 help in the initial growth of the plant for greening, and if the roots of the greening plants grow from the sandbag 17 to the embankment 9, permanent vegetation will be established. The vegetation sandbag 17 is also a scouring prevention member, and prevents scouring and outflow of the embankment material 9 and the shore surface 41 by running water of the river.

<Fourth Embodiment> Next, FIG. 5 shows a shore protection greening structure according to a fourth embodiment, in which a sink 43 is constructed from a riverbed with rocks, concrete blocks, and the like. The third embodiment differs from the third embodiment only in that the lattice frame fence 5 is assembled above. In this embodiment,
When the water volume is low, the lattice frame fence 5 is located above the water surface. According to this embodiment, the same effect as that of the third embodiment can be obtained.

Fifth Embodiment Next, FIGS. 6 to 8 show a shore protection greening structure according to a fifth embodiment. The third embodiment differs from the third embodiment only in that it is attached and fixed to the front side of the front wall portion 6. As shown in FIG. 8, the vegetation sandbag 17 includes a brim portion 20 extending from a peripheral side portion, and an eyelet fitting 21 is provided on the brim portion 20. 29 is the front wall 6
And a connecting rod with a hook as a connecting member for connecting and reinforcing between the upper end of the bottom wall 7 and the rear end of the bottom wall 7.

As shown in FIGS. 6 and 7, the vegetation sandbag 17 is attached to the front side of the front wall 6 of the lattice fence 5, and
One hook of the metal fitting 23 is hooked on a horizontal reinforcing bar or a vertical reinforcing bar of the lattice frame fence 5, and the other hook is connected to the vegetation sandbag 1.
7 is hooked on each eyelet fitting 21. Thereby, the vegetation sandbag 17 is fixed to the front wall portion 6 of the lattice frame fence 5.

According to this embodiment, the same effects as those of the third and fourth embodiments can be obtained. Furthermore, since the vegetation sandbags 17 are attached to the front side of the front wall 6, even if a fire occurs on the shore, the vegetation sandbags 17 prevent the grid frame fence 5 from burning.

<< Sixth Embodiment >> Next, FIGS.
It shows a protection greening structure of the shore surface according to the sixth embodiment,
Only the following points are different from the fifth embodiment.
FIG. 9 shows a state before the vegetation sandbag attachment process is performed in the second stage, and FIG. 10 shows a state after the vegetation sandbag attachment process is performed in the second stage.

The slope angle of the shore surface 41 is about 45 degrees. The water impervious sheet 4 is laid on the shore surface 41 and
Prevent inundation of water. To prevent the water-impermeable sheet 4 from shifting or peeling, apply a primer to the shore surface 41,
It is preferable to adhere the water-impermeable sheet 4 thereon.

The inclination angle of the front wall 6 with the bottom wall 7 is about 45 degrees, the inclination length of the front wall 6 is about 800 mm, and the depth of the bottom wall 7 is about 700 mm. A water-blocking sandbag 10 as a water-blocking member is provided behind the front wall 6. The waterproof sandbags 10 are formed by putting soil in a water-permeable bag made of a woven fabric, and a plurality of the waterproof sandbags are vertically stacked. When the plurality of sheets are covered with the greening sheet 8, the entire waterproof sandbag 10 is integrated to increase the strength. For this reason, the water blocking sandbags 10 do not move individually and do not shift back and forth, and it is possible to prevent a problem that the front wall portion 6 is distorted or the lattice frame fence 5 is collapsed.

Filling between the waterproof sandbag 10 and the shore surface 41 with the stone stone 11 as a filler. As described above, it is preferable to mix the vegetation soil with the chestnut stone 11. The chestnut stone 11 may be replaced with a banking material. The vegetation sandbag 17 is made of a woven fabric of natural fibers (for example, sisal), for example, a flat bag 13 formed to have a height of about 700 mm and a width of about 550 mm, and soil 14 placed therein.
Consisting of As shown in FIG. 11, it is preferable that the front and rear surfaces of the bag 13 are sewn in a quilted shape at important points in order to prevent the soil 14 from being biased downward by its own weight inside the bag 13. FIG. 11A shows an example in which a seam 37 is inserted and sewn so that a gap is left on both the upper and lower sides in the vertical direction at the center in the width direction of the bag 13, and FIG. FIG. 3C shows an example in which stitches 37 are inserted so as to leave no gap, and FIG. 3C shows an example in which stitches 37 are inserted in two vertical directions in the width direction so as to leave a gap on both upper and lower sides.

As shown in FIGS. 12 and 13, soil 14 is put into bag 13 so as to swell to a thickness of about 100 mm. Preferably, any combination of fertilizer, soil conditioner, water retention agent, artificial soil and plant for greening is added to the soil 14. As shown in FIG. 12, a cut 38 is made in the front of the bag 13, and a seedling of the plant 18 for greening is planted on the soil 14 from the cut 38 directly or together with a pot 39 previously planted. And a cutting of a plant 18 for greening is planted in the soil 14 from the hole. The cut 38 is preferably closed with a wire 25, a staple, a thread or the like after planting.

A flange 20 extends from the upper side and the lower side of the bag 13, and the flange 20 is provided with a plurality of mounting holes 22 reinforced by eyelets 21. And the mounting hole 22
13A is hooked directly on the reinforcing bar grid of the front wall portion 6 as shown in FIG. 13A, or is hooked through an S-shaped bracket 23 as a mounting tool as shown in FIG. Then, the vegetation sandbag 17 is attached to the front side of the front wall portion 6. In addition, only the mounting hole 22 on the upper side may be hooked on the front wall portion 6 or FIG.
As shown in the second row, the mounting holes 22 on the upper side and the lower side may be hooked on the front wall portion 6. Further, as shown in the first stage of FIG. 10, the lower mounting hole 22 (or the main body of the vegetation sandbag 17) may be fixed by driving a pile 24 into the riverbed (or the water-stoppage sandbag 10). According to this embodiment, the same effect as that of the third embodiment can be obtained.

<Seventh Embodiment> Next, FIG. 14 shows a protective greening structure for a quayside 41 according to a seventh embodiment. In the protective greening structure, a vegetation sandbag 17 is attached to the rear side of the front wall 6. The sixth embodiment differs from the sixth embodiment in that a water-blocking sandbag 10 is attached to the rear side of the vegetation sandbag 17. The vegetation sandbag 17 may be provided with a mounting hole as in the sixth embodiment and attached to the front wall portion 6 or may not be attached to the front wall portion 6 without the attachment hole and the brim portion. According to this embodiment, the same operation and effect as those of the sixth embodiment can be obtained.

<Eighth Embodiment> Next, FIG. 15 shows a protective greening structure for a quay surface 41 according to an eighth embodiment. The protective greening structure is different from the waterproofing sandbag 10 in that the greening sheet 8 is used. The sixth embodiment differs from the sixth embodiment in that a water stopping member 26 in which the soil 14 is wrapped is used. By adding two or three rows of chestnut stone 27 to the front side of the soil 14, the scouring is further enhanced. According to this embodiment, the same operation and effect as those of the sixth embodiment can be obtained.

<Ninth Embodiment> Next, FIG. 16 shows a protective greening structure for a quay surface 41 according to a ninth embodiment. Shore surface 41
The sixth embodiment is different from the sixth embodiment in that the chestnut 11 is filled between them. According to this embodiment, substantially the same operation and effect as those of the sixth embodiment can be obtained. In addition, since the water stopping member is omitted, there is no water stopping function as in the sixth embodiment, but the scouring of the shore surface 41 can be prevented because the rock stone 11 reduces the force of flowing water.

<Tenth Embodiment> Next, FIG. 17 shows a protective greening structure of a quayside 41 according to a tenth embodiment. The protective greening structure omits the reinforcing sheet, and replaces it with the second embodiment. The anchor 32 is fixed to the shore surface 41 as described above, and the grid frame fence 5 is connected to the anchor 32 by the connecting member 34;
The ninth embodiment is different from the ninth embodiment in that the greening sheet is omitted and that the first half near the front wall portion 6 is filled with the stones 11 and the second half near the shore surface 41 is filled with the embankment material 9. In addition, you may lay a reinforcement sheet and / or a greening sheet.

According to the present embodiment, in addition to the operation and effects substantially the same as those of the sixth embodiment, since the grid frame fence 5 is connected to the anchor 32, the displacement of the grid frame fence 5 and the collapse of the rubble stone 11 are prevented. It can be strongly prevented.

The present invention is not limited to the above-described embodiment, but may be embodied with appropriate modifications without departing from the spirit of the invention, for example, as follows.

(1) In the first to ninth embodiments, the reinforcing sheet 3 and / or the greening sheet 8 are omitted. .

(2) In each embodiment, the lower grid frame fence 5
The front wall portion 6 of the upper grid frame fence 5 is arranged so as to overlap the rear side with respect to the front wall portion 6 of the lower frame frame fence 5, as shown in FIG. However, the front wall portion 6 of the upper lattice frame fence 5 may be arranged so as to overlap the front side. In addition, in FIG. 18, illustration of each part other than the lattice frame fence 5 is omitted for convenience.

(3) As shown by the bold line in FIG. 19, a part of the reinforcing bar constituting the grid frame fence 5 (for example, a portion requiring particularly strong strength) is made thicker than other reinforcing bars. Thus, it is possible to prevent a phenomenon in which a part of the reinforcing bar is bent and deformed to the front side by the pressure of the filler.

(4) In the first to fourth embodiments, the vegetation sandbag 17 is attached and fixed to the front side of the front wall 6. In the eighth embodiment, a vegetation sandbag 17 is attached to the rear side of the front wall portion 6, and a water blocking member 26 is attached to the rear side of the vegetation sandbag 17. In the ninth or tenth embodiment, a vegetation sandbag 17 is attached to the rear side of the front wall portion 6, and the rear side of the vegetation sandbag 17 is filled with the chestnut stone 11.

(5) The means for fixing the vegetation sandbag 17 is shown in FIG.
Change as shown in. In this case, the brim portion 20 is not required for the vegetation sandbag 17. As shown in (a), one hook portion of the S-shaped metal fitting 23 is hooked on a horizontal reinforcing bar of the lattice frame fence 5, and the other hook portion is pierced into the vegetation sandbag 17 to be hooked and fixed. As shown in (b), the hook portion 6a protruding upward from the front side of the front wall portion 6 of the lattice frame fence 5 is pierced into the vegetation sandbag 17 to be hooked and fixed. As shown in (c), the vegetation sandbags 17 are fixed to the front wall 6 of the lattice fence 5 by driving a pile 28. Secure the sandbag to the front wall of the lattice fence by connecting it with a wire.

(6) In the third to eighth and tenth embodiments, the vegetation soil bag 17 is changed to a serpentine cage (not shown) as a scouring prevention member, or the vegetation soil bag 17 and the serpentine basket are omitted to wash. The digging prevention member may be only the greening sheet 8.

[0071]

As described above in detail, according to the protection greening structure for slopes, walls, shores and the like according to the present invention, protection using a lattice frame fence having excellent points such as good workability is provided. In the greening structure, soil necessary for germination and growth of greening plants can be secured near the front wall of the lattice frame fence, so that reliable greening can be achieved.

In particular, according to the shore protection greening structure according to the present invention, the workability is good and the soil and rocks at the site can be effectively used. The greening of the shore surface was possible, providing an excellent landscape and a good habitat for aquatic organisms.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a protective greening structure for a rock slope according to a first embodiment of the present invention.

FIG. 2 is a sectional view of the protective greening structure.

FIG. 3 is a cross-sectional view illustrating a protection greening structure for a rock slope according to a second embodiment.

FIG. 4 is a cross-sectional view showing a shore protection greening structure according to a third embodiment.

FIG. 5 is a cross-sectional view showing a shore protection greening structure according to a fourth embodiment.

FIG. 6 is a cross-sectional view illustrating a shore protection greening structure according to a fifth embodiment.

FIG. 7 is a partial sectional view showing a fixing means of the sandbag having the protective greening structure.

FIG. 8 is a perspective view showing a vegetation sandbag having the protective greening structure.

FIG. 9 is a perspective view showing a shore protection greening structure according to a sixth embodiment.

FIG. 10 is a sectional view of the protective greening structure.

FIG. 11 is a front view illustrating three embodiments of a vegetation sandbag used for the protective greening structure.

12 shows a state in which seedlings or cuttings of a plant for greening are planted on the vegetation sandbag, (a) is a front view, and (b) is a cross-sectional view.

FIG. 13 is a partial cross-sectional view illustrating two means for attaching the vegetation sandbag to the front wall of the lattice frame fence.

FIG. 14 is a cross-sectional view showing a shore protection greening structure according to a seventh embodiment.

FIG. 15 is a cross-sectional view illustrating a shore protection greening structure according to an eighth embodiment.

FIG. 16 is a sectional view showing a shore protection greening structure according to a ninth embodiment.

FIG. 17 is a cross-sectional view showing a shore protection greening structure according to a tenth embodiment.

FIG. 18 is a side view of a modified example of the arrangement of the lattice frame fences in each embodiment.

FIG. 19 is a perspective view of a modified example of the lattice frame fence in each embodiment.

FIG. 20 is a partial sectional view showing a modified example of the fixing means of the vegetation sandbag.

FIG. 21 is a cross-sectional view showing a conventional protection greening structure for a rock slope.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rock slope 3 Reinforcement sheet 4 Impermeable sheet 5 Grid frame fence 6 Front wall part 7 Bottom wall part 8 Greening sheet 9 Embankment material as filler 9b Rock 10 Water-blocking sandbag as water-stopping member 11 Kuriishi 13 bags Reference Signs List 14 soil 15 pile as locking member 16 spray layer 17 vegetation sandbag 18 plant for greening 22 mounting hole 23 S-shaped metal fitting as mounting tool 25 wire 26 water stopping member 27 chestnut stone 31 mounting hole 32 anchor 34 connecting material 37 seam 38 Cut 39 Pot 40 River 41 Shore

Continued on the front page (72) Inventor Mitsuo Kimura 4-1-1 Sohara Koa-cho, Kakamigahara-shi, Gifu Tenryu Kogyo Co., Ltd. (72) Inventor Masaharu Takagi 4-5-33 Kitahama, Chuo-ku, Osaka-shi, Osaka Sumitomo Corporation (72) Inventor Hirotaka Sato 4-7-128 Kitahama, Chuo-ku, Osaka-shi, Osaka Sumitomo Forestry Co., Ltd. (72) Inventor Yasuyuki Watanabe 3-4-26 Minamisenba, Chuo-ku, Osaka-shi, Osaka Sumitomo Forestry Greenery Stock In company

Claims (21)

[Claims] 1. A grid frame fence comprising an inclined front wall section made of a reinforced grid and a horizontal bottom wall section, and installed in front of a protection greening target face such as a slope, a wall surface, a shore surface, and the like, and the grid frame. One step including a filler filled between the fence and the surface to be protected and greening, and vegetation sandbags attached to the front side, the rear side, or both front and rear sides of the front wall portion is configured, and the step is formed. Protective greening structures, such as slopes, walls, and shores, constructed in multiple steps by stacking from the bottom up. 2. The slope, wall surface, shore surface, and the like according to claim 1, wherein a greening sheet through which the greening plant can penetrate during growth is preferentially abutted behind the front wall portion. Protective greening structure. 3. The protective greening structure according to claim 1, wherein a reinforcing sheet is laid below the bottom wall. 4. The protective greening structure for slopes, wall surfaces, shore surfaces, and the like according to claim 3, wherein the bottom wall portion is locked to the reinforcing sheet by a locking member. 5. The slope, wall surface, and shore surface according to claim 1, wherein an anchor is fixed to the surface to be protected, and the grid frame fence is connected to the anchor with a connecting member. Etc. Protective greening structure. 6. The water-blocking member according to claim 1, wherein a water-stopping member for stopping water flow is interposed between the vegetation sandbag and the filler and at a rear side of the front wall portion. Protective greening structure for the slopes, walls, and shores described. 7. The greening structure for protecting slopes, walls, shores and the like according to claim 6, wherein the water stopping member is a water stopping sandbag. 8. The protective greening structure for slopes, walls, shores and the like according to claim 6, wherein the water-stopping member is formed by wrapping soil in a sheet. 9. The method according to claim 1, wherein the filler is a rubble stone.
The protective greening structure for slopes, walls, shores, etc. according to any one of the above. 10. The filling material is an embankment material.
The protective greening structure for slopes, walls, shores, etc. according to any one of claims 8 to 8. 11. The filling material according to claim 1, wherein the filling material is composed of a rubble stone filled near the lattice frame fence and an embankment material filled near the protection greening target surface. Protective greening structure for slopes, walls, shores, etc. 12. The protective greening structure for slopes, walls, shores, and the like according to claim 9, wherein vegetation soil is mixed with the chestnut stone. 13. The protective greening structure for slopes, walls, shores and the like according to claim 1, wherein an impermeable sheet is laid on the surface to be protected. 14. The method according to claim 1, wherein the bag of the vegetation sandbag is a flat bag and has a front surface and a rear surface sewn at important points in a quilted shape. Protective greening structure for surfaces, walls, shores, etc. 15. The slope according to claim 1, wherein a fertilizer, a soil conditioner, a water retention agent, an artificial soil, a seed, or a combination thereof is added to the soil of the vegetation sandbag.
Protective greening structure for walls, shores, etc. 16. A mounting hole provided in the bag of the vegetation sandbag,
The protective greening structure for slopes, walls, shores, and the like according to any one of claims 1 to 15, wherein the protective greening structure is attached directly to the reinforcing grid of the front wall portion. 17. A mounting hole provided in the bag of the vegetation sandbag,
The protective greening structure for a slope, a wall surface, a shore surface, or the like according to any one of claims 1 to 15, wherein the protective greening structure is attached to a reinforcing grid of the front wall portion via a fixture. 18. The method according to claim 18, wherein the vegetation sandbag comprises seeds of a greening plant.
The protective greening structure for slopes, walls, shores and the like according to any one of claims 1 to 17, wherein a seedling or a cutting is planted. 19. A grid frame fence comprising an inclined front wall made of a reinforced grid and a horizontal bottom wall and installed in front of a quay surface;
A filler filled between the lattice fence and the shore,
A single step including a scouring prevention member attached to the front side, the rear side, or both front and rear sides of the front wall portion to prevent scouring by running water on the shore surface is configured, and the filling material and the scouring member are provided. At least one of the digging prevention members includes soil, and the step is stacked from bottom to top to construct a shore protection greening structure constructed in a plurality of steps. 20. The shore protection greening structure according to claim 19, wherein the scouring prevention member is a sandbag. 21. The shore protection greening structure according to claim 19, wherein the scouring prevention member is a serpentine basket formed by packing a rock in a wire mesh basket.