JP2747953B2 - 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 for arranging a plurality of vegetation pockets on a slope in a stepwise manner so as to vegetate and green the slope and protect the slope.

[0002]

2. Description of the Related Art Conventionally, as a technique for greening a slope by using a step-shaped vegetation pocket, Japanese Patent Publication No. 62-33374 is known.
And JP-A-63-53336 and JP-A-1-223218 are known.

[0003]

The above-mentioned conventional technique is different from the thick-layer greening base spraying method and can plant trees without flowing out of the greening base material even when the slope of the slope is steep. Although it is a construction method that can protect the slope as well as the concrete, the concrete block body is the main constituent material, so not only the natural scenery is significantly damaged by the exposure of the concrete block body, but also the concrete block body is heavy. Therefore, there is a disadvantage that construction is troublesome and cost is high.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a low-cost slope revegetation method capable of achieving sufficient greening without impairing the natural scenery and protecting and stabilizing the slope.

[0005]

Means for Solving the Problems The present inventors have made intensive studies to achieve the above object, and as a result, have accomplished the present invention.

That is, in the slope greening method according to the present invention, after laying and fixing a net on the slope, a plurality of vegetation pockets are fixed to the net and / or the slope itself. After forming a stepped vegetation pocket in one row or a plurality of rows in the horizontal direction and a plurality of steps in the vertical direction, concrete is wrapped around the edge of the vegetation pocket on the slope around the stepped vegetation pocket and held. Is sprayed to form a legal frame.

In a preferred embodiment of the slope greening method according to the present invention, the vegetation pocket has hook portions at both ends of a skeleton portion thereof, and the hook portions are attached to the net and / or slope ground. Attachment fixing of the vegetation pocket by engaging, at least the horizontal frame portion of the law frame is made of permeable concrete, the vertical frame portion of the law frame is formed of impervious concrete, and the vertical frame portion is Providing drainage grooves, spraying greening base material into vegetation pockets, using solidified greening base materials pre-installed as vegetation pockets, spraying concrete on vegetation pocket walls, vegetation After covering the vegetation site on the top of the pocket with a protective sheet,
Spraying the concrete, after spraying is completed,
Removing the protective sheet.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1, 3, 5, and 7 are schematic perspective views illustrating each step of the method of the present invention, and FIGS. 2, 4, 6, and 8 are FIGS. 1, 3, 5, and 7, respectively. Schematic side view of the
9 is a schematic side view of the skeleton portion of the vegetation pocket, FIG. 10 is an explanatory view of the arrangement of the vegetation pocket, FIG. 11 is an explanatory view of another embodiment of the arrangement of the vegetation pocket, and FIG. 12 shows another embodiment of the vegetation pocket. FIG. 13 is a schematic side view showing another mode of spraying permeable concrete.

First, as shown in FIGS. 1 and 2, a net 2 such as a net or a wire net is laid on a slope 1 and fixed with pins 3 and anchors 4.

Next, as shown in FIGS. 3 and 4, a plurality of vegetation pockets 5 each having an inverted L-shaped cross section are attached to the slope 1 and fixed. The vegetation pocket 5 may be attached and fixed by engaging the mesh 2 or the like, or may be fixed to the ground itself of the slope 1 via the pin 3 or the anchor 4. Alternatively, they may be fixed to both. FIG. 9 shows an example of a skeleton portion of the vegetation pocket 5 having an inverted L-shaped cross section. As shown in FIG. 9, the skeleton has hooks so that both ends 5A are easily hooked and engaged with the mesh of the mesh body 2.

Further, the arrangement is such that one or more rows (two rows in this embodiment) are arranged in the horizontal direction and a plurality of steps (five rows in this embodiment) are arranged in the vertical direction. The number of steps, the length in the horizontal direction, the number of rows, and the like are appropriately determined depending on the state of the slope 1 to be greened, desired greening conditions, and the like. For example, a large number of horizontally short vegetation pockets 5 are checked. They may be arranged in a pattern. In the present embodiment, two blocks, three and two, are arranged in the vertical direction. However, each of the blocks may be separated from each other, or may be divided into blocks of other combinations. In addition, it is preferable that each of the blocked steps be configured in a step-like manner so that the adjacent end portions 5B thereof overlap as shown in FIG. Needless to say, they do not need to overlap as shown in FIG.

Further, the shape of the vegetation pocket 5 is such that the vegetation site on the upper surface is formed in an open pocket shape and holds most of the greening base material 9 to be sprayed in a later step, and is suitable for growing plants. The constituent material is preferably a steel wire (preferably a galvanized steel wire) or a net-like material formed of a synthetic resin or the like. In the case of a net shape, the mesh spacing varies depending on various conditions, such as the particle size of the greening base material 9 to be retained, the type of vegetation, and the like, but does not inhibit the elongation of the roots of the plant and is large in size. This is the mesh interval that can hold the portion. Also, if the aspect ratio of the mesh is changed, when the root elongates and the root protrudes from between the meshes, the mesh changes according to the thickness of the root and becomes easy to spread. The same (for example, square or true circle)
Is preferable as compared to Further, when the constituent material of the vegetation pocket 5 is not made into a net shape or the like, a greening base material holding sheet is provided on the surface of the vegetation pocket 5 so as to cover the greening base material 9 so that the greening base material 9 does not flow out. Is also preferred.

According to the vegetation pocket 5 configured as described above, the elongation of the root of the plant is not restricted to one net pocket 5 and the slope 1 is inserted through the plurality of vegetation pockets 5.
Therefore, the growth of the plant is not restricted, and the slope can be further stabilized. The vegetation site on the upper surface of the vegetation pocket 5 is preferably in an open state so as not to inhibit the elongation of the plant as described above, but if the configuration does not inhibit the elongation of the plant, the upper part is covered. May be. In addition, as other shapes of the vegetation pocket 5, for example,
The shape shown in FIGS. 1 and 3 of Japanese Patent Application Laid-Open No. 2-82122 and the shape shown in FIG. 1 of Japanese Unexamined Patent Application Publication No. 2-170985 by the present applicant can be adopted.

In addition, when the present invention is applied to a slope 1 in an area where environmental conditions cause freezing and thawing due to cold conditions, the wall surface of the vegetation pocket 5 is covered with a heat insulating material 10 as shown in FIG. Is preferred. More preferably, a water-permeable sheet or a water-permeable plate 11 that can be a drainage path is provided inside the heat insulating material.

After the vegetation pockets 5 are fixed to the slope 1 as described above, reinforcing reinforcing bars 6 are arranged between the rows and the spaces between the steps around the vegetation pockets 5 in order to increase the strength. I do.

Next, as shown in FIGS. 5 and 6, concrete 7 is sprayed onto the slope 1 around the vegetation pocket 5 which is attached and fixed in a stepwise manner so as to wrap and hold the end of the vegetation pocket 5. To form When spraying the concrete 7, it is preferable to cover the vegetation site with a protective sheet 8 in order to prevent the concrete 7 from entering the vegetation site on the upper surface of the vegetation pocket 5. The protective sheet 8 is removed after the spraying is completed.

The lawn frame protects and protects the entire slope 1 and also has a vegetation pocket 5 in which plants (including trees) are vegetated.
Is held. It is preferable that at least the horizontal frame portion of the concrete frame is made of permeable concrete, and the permeable concrete may be any concrete having conventionally known various permeable properties. No. 136048 (September 19, 1991
It is preferable to use the one described in (Japanese public notice). The vertical frame part of the law frame is also preferably made of permeable concrete with excellent drainage properties. However, when applied to a slope 1 in an area where freezing and thawing is repeated day and night due to severe weather conditions, It is preferable that the vertical frame portion of the frame is made of general impervious concrete, and a drain groove for guiding drainage is formed in the vertical frame portion. This is because the volume of water has a property of expanding due to freezing, and if water passing through the permeable concrete freezes, the permeable concrete may be destroyed by expansion. Incidentally, even when the vertical frame portion of the legal frame is made of permeable concrete, it is needless to say that a drain groove may be provided in the vertical frame portion.

In this embodiment, the number of rows of the vegetation pocket 5 is two.
In the row, the number of steps is 5 steps of upper 3 steps and lower 2 steps, so that the periphery of the vegetation pocket 5 is the part 7A
7B and 7C and stepped portions 7D, 7E and 7F. In this embodiment, since there is no gap between each of the upper three steps and the lower two steps, the concrete 7 is not sprayed on the part between the respective steps. When the concrete 7 is sprayed on the wall of the vegetation pocket 5 as in the embodiment shown in FIG. 13 to be described later, the spraying may be naturally performed between the steps. In addition, as shown in FIG. 13, the vegetation pocket 5 can be reinforced by spraying the concrete 7 on the front surface (and in some cases, the side surface) of the wall portion of the vegetation pocket 5.

Next, the greening base material 9 is placed in the vegetation pocket 5.
Spray or put in. In the present invention, the greening base material 9 to be sprayed or injected is appropriately selected mainly from corrosive soil (for example, peat moss or bark having water retention), a binder (resin or cement), fertilizer, seeds and the like. The various well-known greening base materials comprised from these can be applied. The spraying or charging of the greening base material 9 may be performed before the concrete 7 is sprayed, or the spraying or charging step may be performed by using a solidified greening base material 9 previously attached as the vegetation pocket 5. It may be omitted. The solidified greening base material 9 refers not only to a solidified block-shaped material, but also to a material in a state where the shape is maintained, such as a material wrapped in a bag or a net. In addition, the greening base material 9 may be sprayed on the surface of the concrete 7 which is a legal frame portion outside the vegetation pocket 5 or on the wall of the vegetation pocket 5. By spraying these parts, the artificial landscape of the legal framework until the planting is completed can be made somewhat closer to the natural state.

When the spraying of the greening base material 9 is completed, a plant growth base on the slope 1 is built up as shown in FIGS. When the seeds in the vegetation pocket 5 germinate or the plants grow, the slope 1 formed as a growth base can be used not only in one vegetation pocket 5 but also on the wall surface outside the vegetation pocket 5 or the like. As time passes, the plant 1 slopes to another vegetation pocket 5 adjacent thereto so as to cover the lawn portion made of concrete 7.
And the gap between the plants becomes a growth base due to fallen leaves and the like, so that these gaps are filled with the plants and approach the natural state.

[0021]

According to the present invention, since the concrete frame is formed around the vegetation pockets arranged stepwise, the vegetation of the plant is planned by the vegetation pockets, and the protection of the slope and the vegetation are stabilized. Since the pocket can be held by the slope, the slope can be sufficiently greened and the slope can be protected and stabilized regardless of whether the slope is a steep slope or a gentle slope. In addition, also in terms of natural scenery, since only the legal framework is made of concrete, the vegetation is covered by plants as the vegetation advances, so that a more natural state is obtained. Moreover, the construction is easy and the cost is low as compared with a conventional concrete block body as a main constituent material.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view illustrating the steps of the method of the present invention.

FIG. 2 is a schematic side view of FIG.

FIG. 3 is a schematic perspective view illustrating the steps of the method of the present invention.

FIG. 4 is a schematic side view of FIG. 3;

FIG. 5 is a schematic perspective view illustrating the steps of the method of the present invention.

FIG. 6 is a schematic side view of FIG.

FIG. 7 is a schematic perspective view illustrating the steps of the method of the present invention.

FIG. 8 is a schematic side view of FIG.

FIG. 9 is a schematic side view of a skeleton portion of a vegetation pocket.

FIG. 10 is an explanatory diagram of an arrangement of vegetation pockets.

FIG. 11 is an explanatory diagram of another example of the arrangement of vegetation pockets.

FIG. 12 is a schematic sectional view showing another embodiment of the vegetation pocket.

FIG. 13 is a schematic side view showing another embodiment of spraying permeable concrete.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Slope 2 Wire mesh 3 Pin 4 Anchor 5 Vegetation pocket 6 Reinforcing steel 7 Permeable concrete 8 Protective sheet 9 Greening base material 10 Heat insulating material 11 Permeable sheet or pervious plate

Claims (8)

(57) [Claims] (1) After laying and fixing a net on a slope, a plurality of vegetation pockets are attached to the net and / or the slope ground itself to be fixed, thereby forming one or more rows in the horizontal direction. And stepwise vegetation pockets are formed in a plurality of steps in the vertical direction, and then concrete is sprayed on a slope around the stepped vegetation pocket so as to wrap and hold the end of the vegetation pocket to form a legal frame. A slope greening method characterized by the following. 2. The vegetation pocket has hook portions at both ends of its skeleton portion, and the hook portion is engaged with the net and / or slope ground to fix and attach the vegetation pocket. The slope revegetation method according to claim 1, characterized in that: 3. The slope greening method according to claim 1, wherein at least a horizontal frame portion of the slope is made of permeable concrete. 4. The slope revegetation method according to claim 1, wherein a vertical frame portion of the slope frame is formed of impervious concrete, and a drain groove is provided in the vertical frame portion. 5. The slope greening method according to claim 1, wherein a greening base material is sprayed into the vegetation pocket. 6. The slope revegetation method according to claim 1, wherein a pocket to which a solidified revegetation base material is attached in advance is used as the vegetation pocket. 7. The slope revegetation method according to claim 1, wherein concrete is sprayed on the vegetation pocket wall. 8. The method according to claim 1, wherein after the vegetation site on the upper surface of the vegetation pocket is covered with a protective sheet, the concrete is sprayed, and after the spraying is completed, the protective sheet is removed. The slope greening method described.