JPH05156644A - Construction method for planting tree on face of slope - Google Patents

Abstract

PURPOSE:To plant trees along a face of slope and to protect and stablize the face of slope by stretching a plurality of chain-shaped bodies between the top and the toe of the slope, and installing pet-shaped vegetation pockets at intervals of a net, and then scattering and/or loading the face of slope with vegetation base materials. CONSTITUTION:A tree-planting gauze 2 is laid over a face 1 of slope and fixed by pins 3 and a plurality of anchors 5 are driven at predetermined intervals into the top 4 and the toe of slope 1 and chain-shaped bodies 6 are fixed and suspended. Then net pockets 8 in the form of a gauze are mounted on the chain-shaped bodies 6 stepwise along the inclination of the face 1 of slope. Then vegetation base materials 10 such as humus soil, fertilizers and seeds are scattered over the face 1 of slope including the inside of each net pocket 8 so as to create a basis for growing plants on the face 1 of slope. Thereby the whole face 1 of slope is covered by the chain-shaped bodies 6, horizontal reinforcement 9 and the net pockets 8 and thus the plants are prevented from collapsing and dropping so as to promote sufficient tree-planting and protect and stabilize the face 1 of slope.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slope revegetation method for vegetation on slopes for greening and for stabilizing and protecting slopes.

[0002]

BACKGROUND OF THE INVENTION Conventionally, Japanese Patent Laid-Open No. 2-144 discloses a greening method in which a vegetation pocket is provided on a slope to green the slope.
413, JP-A-62-82122, JP-A-1-18.
The techniques described in Japanese Patent No. 2414, Japanese Patent Publication No. 60-28973, etc. are known.

The technique disclosed in Japanese Patent Laid-Open No. 2-144413 is as follows.
This is a technique for vegetation sapling that envelops the roots of vegetation seedlings and is tied to ropes stretched on the slope and fixed with anchor pins to disperse the nets in a scattered manner on the slope for greening. However, in this technique, the rope stretched on the slope is only for holding the vegetation bag net, and is insufficient in terms of strength and resistance in terms of stable protection on the slope.

Further, the techniques of the above-mentioned JP-A-62-82122 and JP-A-1-182414 are techniques for fixing the vegetation pocket to the slope by an anchor for greening the slope. This technology is sufficient in terms of greening the slope, but since each vegetation pocket is independently arranged on the slope, it is not sufficient in terms of integrated protection and stability of the entire slope. is there.

According to the technique of Japanese Patent Publication No. 60-28973, a pillar is embedded in the slope, ropes, wires and wire nets are stretched to form a weir frame, and the weir frame is used as a soil retaining and vegetation pocket for greening. It is a technology. However, this technique has the drawback that the construction of the weir frame is complicated, so that not only is it time-consuming to construct, but also the columns and the weir frame are exposed, which impairs the aesthetics and significantly impairs the natural landscape. ing.

[0006]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a simple slope greening method capable of achieving sufficient greening without damaging the natural landscape and protecting and stabilizing the slope.

[0007]

The inventors of the present invention have made extensive studies to achieve the above object, and as a result, the present invention has been achieved.

That is, the slope surface greening method according to the present invention is a slope surface greening method in which a plurality of vegetation pockets are arranged on the slope surface, and a plurality of chain-like bodies are provided between the slope shoulder and slope of the slope surface. A method in which a plurality of net-shaped vegetation pockets having a mesh interval which do not hinder the elongation of roots and can hold most of the greening base material are attached to the chain-like body, and then the inside of the net-shaped vegetation pocket is included. It is characterized by spraying and / or throwing a greening base material on the surface.

[0009] Another slope greening method according to the present invention is a slope greening method in which a plurality of vegetation pockets are arranged on the slope, a wire net is laid on the slope and fixed, and then a plurality of chains are attached. The body is stretched between the shoulder and the tail of the slope and fixed to the wire net at a plurality of points, and the wire net and / or the chain does not hinder the elongation of the root and most of the greening base material A plurality of net-shaped vegetation pockets having a mesh interval that can be held are attached, and then a greening base material is sprayed and / or put on a slope including the inside of the net-shaped vegetation pockets.

In a preferred embodiment of the slope greening method according to the present invention, the net-shaped vegetation pocket is attached to an inverted L-shaped bone body whose both ends are fixed to the slope and a vertically extending portion of the bone body. A net body forming a wall portion, and a net-shaped vegetation pocket preliminarily attached with a solidified greening base material is used as the net-shaped vegetation pocket. It is arranged in a stepped manner on the surface.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic cross-sectional view showing a state in which the slope is greened by an example of the construction method of the present invention, FIGS. 2, 4 and 5 are schematic cross-sectional views explaining each step of the construction method, and FIG. It is a schematic perspective view similarly.

An example of the first greening method of the present invention will be described below with reference to the drawings.

First, as shown in FIG. 2, a green wire mesh 2 is formed on the slope 1.
Is laid and fixed with pin 3. The green wire mesh 2 does not necessarily have to be laid in the first greening method, and when the entire slope 1 is to be vegetated, the condition of the slope 1, the environment of the application site, the type of plant It is laid in consideration of various conditions such as, and may not be laid at all.

Next, a plurality of anchors 5 are driven on the shoulders 4 and the tails 7 of the slope 1 at a predetermined interval, and the chain 6 is fixed to the anchors 5, and the shoulders of the slope 1 are fixed. Suspend between 4 and Hojiri 7. The spacing between the anchors 5, that is, the spacing between the stretched chain-like bodies 6 is preferably equal, and the type of slope 1 (for example, rock slope, cut slope, embankment slope,
Sediment slope etc.) and condition (eg soil hardness, inclination angle, etc.)
It is about 0.5 m to 1 m although it varies depending on the conditions.
It should be noted that the portions where the slope 1 is in a poor condition may be stretched irregularly, and in this case, it is preferable that the stretching intervals be made particularly close in the poor condition.

As shown in the figure, the chain-like member 6 is made of a chain such as a steel chain in which the chains (rings) are formed at predetermined intervals by connecting the chains of the pieces (rings). Since fixing of each member such as fixing of the net pocket 8 in the subsequent step can be performed by using each top of the chain, compared with the conventional linear body such as a wire using a wire clip. It can be easily and firmly fixed to an appropriate position. In addition, it is possible to flexibly respond to changes in the fixing position of each member due to design changes in the field, and addition of specifications after the passage of time.

Next, a plurality of horizontal streaks 9 are inserted through the tops of the chain 6 to connect the chain 6 in the horizontal direction (see FIG. 3). The horizontal streak 9 is determined by various conditions such as the size of the top of the chain body 6 and the load applied to the net pocket 8 which will be described later, but a steel material having a diameter of about 6 to 16 mm is usually used.

Next, as shown in FIG. 4, a net-like net pocket 8 is attached to the plurality of chain-like bodies 6 in a stepwise manner along the slope of the slope 1. The installation intervals of the net pockets 8 are basically 0.2 to 0.6 m although they vary depending on various conditions such as the slope of the slope 1, the target of vegetation, and the weather conditions in the applicable area.

Further, the net pocket 8 is the above-mentioned Japanese Patent Publication Sho 60.
As it is not a soil retaining like the prior art described in No. 28973 publication, a highly exposed pillar or the like is not required when fixing it to the slope 1, so that the lower end portion is simply hooked on the lateral streak 9. It suffices to fix the upper part to the chain-like body 6 in a slanting manner by means of a fixture 8A. Therefore, regardless of the slope of the slope 1, the net pocket 8
Can be attached to the slope 1 very easily.

The net pocket 8 is formed into a pocket shape having an open upper portion and has a shape suitable for holding most of the greening base material 10 to be sprayed in a later step and vegetating. In addition, the fixture 8A can change the angle of the net pocket 8 depending on its mounting position and length,
The structure is the same as the chain 6 with hooks attached, and the net pocket 8 in the third step in FIG.
It may be a turnbuckle-shaped fixture 8B that is easy to adjust the length as used in the above.

The mesh spacing of the net pockets 8 does not hinder the elongation of roots and can hold most of the greening base material 10, specifically, the mesh spacing of the horizontal meshes is 20 mm to 10 mm.
0 mm, preferably 30 mm to 70 mm, and the vertical mesh size is 5 mm to 50 mm, preferably 6 mm to 15 mm. The mesh spacing of the net pockets 8 is not necessarily limited to the above-mentioned spacing, and may be wider. As is applied to the third-stage net pocket 8 in FIG. By disposing the base material holding sheet 11, it is possible to prevent the greening base material 10 from flowing out.

The material of the net pocket 8 is formed of steel wire, synthetic resin or the like, and is preferably galvanized steel wire. The upper part of the net pocket 8 is preferably in an open state so as not to hinder the elongation of the stem of the plant, but if the structure is such that the elongation of the stem is not hindered, as shown in FIG. The upper portion may be covered with the wire-shaped wire 8C or the like. The net pocket 8
It is preferable that the upper end corners thereof are reinforced by a reinforcing member 8D made of steel or resin having a mountain-shaped or C-shaped cross section in terms of strength improvement, work safety, movement of domestic animals, and the like.

As the net pocket 8, other than the above, the one shown in FIG. 6 may be used. Figure 6
The net pocket 80 shown in FIG. 2 includes a plurality of inverted L-shaped bone bodies 81 whose both ends are fixed to the slope 1 and a net body 82 which is attached to the vertically extending portion 81A of the bone body 81 to form a wall portion. It comprises. The net pocket 80 is fixed to the slope 1 by attaching the net pocket 80 to the lateral streak 9 or the chain-like body 6 in a manner similar to that described above.

The shape of the net pocket 8 other than those shown in FIGS. 1, 3 to 5, and 6 is, for example, as follows.
The shapes shown in FIGS. 1 and 3 of JP-A-62-82122 and the first of JP-A-2-170985 by the present applicant
A shape or the like as shown in the figure can be adopted. Again,
In the present embodiment, as the net pocket 8, an elongated one in the width direction as shown in FIG. 3 is formed in a step-like slope 1 as shown in FIG.
However, the present invention is not limited to this, and for example, a short one in the width direction may be arranged on the slope 1 in a so-called checkered pattern.

Next, as shown in FIG. 5, the green base material 10 is sprayed on the slope 1 including the inside of the net pocket 8.
The greening base material 10 sprayed in the present invention is mainly composed of corrosive soil (for example, peat moss and bark having water retention property), a binder (resin or cement), fertilizer, seed, etc. Various publicly known greening base materials can be applied. In addition to spraying the greening base material 10, the greening base material 10 may be preliminarily enclosed in a bag or a box to be solidified, and the solidified green base material may be mounted in the net pocket 8 in advance. The bag body, the box body, and the like may have the same configuration as that of the net of the net pocket 8, that is, a net body having a mesh spacing that does not hinder the elongation of the root and can hold most of the greening base material 10. .. Further, if the bag body, the box body and the like are made of a water-soluble or biodegradable material,
After construction, it dissolves or decomposes with water spray or over time, which is preferable because it has high environmental suitability.

By completing the spraying of the greening base material 10, the plant growth base on the slope 1 is built up. The slope 1 on which the growth base has been built up becomes green as a result of the germination of seeds in the net pocket 8 or the growth of seedlings, resulting in the state shown in FIG. Further, with the passage of time, the plants grow so as to cover the slope 1, and the gaps between the plants can also serve as a growth base due to fallen leaves, etc. Since these gaps are also filled with the plants, they will come closer to the natural state. Further, since the entire slope 1 is covered with the chain 6 and the horizontal streak 9 and the net pocket 8 fixed to the chain 6 and the horizontal streak 9, it is possible to prevent the plant from collapsing or falling rocks. Therefore, sufficient greening can be achieved and the slope 1 can be protected and stabilized. still,
In the present invention, since the stability of the slope 1 is protected by the chain 6 and the lateral streaks 9, the net pocket 8 and the plant to be vegetated, it is particularly necessary to use a highly exposed strut such as Japanese Patent Publication No. 60-28973. Therefore, not only is there no risk of impairing the natural landscape, but it can be applied not only to gentle slopes but also to steep slopes 1. Moreover, since each member of the chain-like body 6 is used for disposing and mounting and fixing each member, it becomes extremely easy and strong. Further, even when the design specifications are changed on site, or when reinforcement is required after a lapse of time or after a disaster, it is possible to add specifications very easily by using each frame of the chain member 6.

Next, an example of the second greening method of the present invention will be described.

The second greening method is applied when the slope 1 is steep, the amount of snow or the amount of rainfall is large, and a high load is easily applied to the vegetation base constituted by the net pockets 8 and the like. And in order to stabilize the slope 1,
A wire mesh 2 is laid over the entire surface of the slope 1 where the vegetation base is formed, and fixed with pins 3. In the first greening method, the wire net 2 is laid as necessary and not necessarily required for vegetation, but in the second greening method, the slope 1 Since it is applied when the condition of 1 is severe, it is always laid in order to stabilize the entire slope 1.

Next, similarly to the first greening method, the anchor 5
After the casting and the chain-like member 6 are stretched, in the second greening method, the wire netting 2 and the chain-like member 6 are fixed and integrated at a plurality of points. As the fixing means, various kinds of fixing means can be used in addition to the use of the hooks of the chain-like body 6 and the mesh of the wire netting 2 by various kinds of fasteners such as wire to tightly connect the spring hooks and S hooks. It is preferable that the fixing position is the same position and the same number as the attaching portion of the net pocket 8 when the net pocket 8 is attached in the subsequent step.

Next, as in the first greening method, a plurality of net pockets 8 to 80 are attached to at least one of the wire net 2 and the chain 6, preferably both. In the second greening method, the net pockets 8 to 80 are attached to the wire netting 2 and / or the chain-like body 6, so that the horizontal streak 9 in the first method can be omitted. FIG. 7 is a schematic perspective view showing a state in which the net pocket 80 is attached to the wire net 2 and the chain body 6.

After the net pocket 8 is attached, the greening base material 10 is sprayed and / or put on the slope 1 including the inside of the net pocket 8. As for the greening base material 10, as in the case of the first greening method, a solidified material may be attached to the net pockets 8 to 80 in advance.

The second greening method, which is preferable for the case where the condition of the slope 1 is severe, has been described above, but the description of the same aspect as the first greening method is omitted.

According to the second greening method, not only has the effect of the first greening method, but even when a heavy load is applied to the vegetation base due to rainfall or snowfall,
Since the load can be shared by each constituent material from the net pockets 8 to 80 through the wire net 2 and the chain-like body 6, and the entire slope 1 can bear the load, it is possible to prevent damage or collapse of the vegetation base. Further, even if a part of the material forming the vegetation base is destroyed with the passage of time, for example, the chain 6 is broken,
Since the constituent materials are integrated, damage or collapse can be partially stopped.

[0034]

INDUSTRIAL APPLICABILITY According to the present invention, the vegetation of a plant is used as a base member of a net pocket having a mesh interval which does not inhibit the growth of roots and can retain most of the greening base material, and the slope of the slope. The structure is simple because it uses a plurality of chain-shaped members stretched between the buttocks and uses a chain-shaped top to attach the net pocket and other components to the chain. Moreover, strong protection and stability can be obtained very easily. Therefore,
It is possible to provide a simple slope greening method capable of achieving sufficient greening without damaging the natural landscape and protecting and stabilizing the slope. In particular, according to the second greening method, the degree of integration of each constituent material of the vegetation base is high, so the slope conditions are strict and the vegetation base is highly loaded, such as steep slopes and heavy snowfall or rainfall. It can be applied when it is easily affected.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing a state in which a slope is greened by an example of the construction method of the present invention.

FIG. 2 is a schematic cross-sectional view explaining one step of the construction method of FIG.

FIG. 3 is a schematic perspective view illustrating one step of the construction method of FIG.

FIG. 4 is a schematic cross-sectional view explaining one step of the construction method of FIG.

5 is a schematic cross-sectional view illustrating one step of the construction method of FIG.

FIG. 6 is a perspective view showing another example of a net pocket.

7 is a schematic perspective view showing a state in which the net pocket of FIG. 6 is attached.

[Explanation of symbols]

 1 Slope 2 Green wire mesh 3 Pins 4 Shoulder 5 Anchor 6 Chain-like body 7 Law end 8 Net pocket 9 Transverse line 10 Green base material 11 Green base material holding sheet 80 Net pocket

Claims (5)

[Claims] 1. In a slope revegetation method in which a plurality of vegetation pockets are arranged on a slope, a plurality of chain-like bodies are stretched between the slope shoulders and slopes of the slope, and the roots are connected to the chain-like bodies. Of a plurality of net-like vegetation pockets having a mesh spacing capable of holding most of the greening base material without hindering the extension of the greening base material and spraying the greening base material on the slope including the inside of the net-like vegetation pocket and / or Slope greening method characterized by being thrown in. 2. In a slope revegetation method in which a plurality of vegetation pockets are arranged on the slope, after laying and fixing a wire mesh on the slope,
A plurality of chain-like bodies are stretched between the slope shoulders and slopes of the slope and fixed at a plurality of points with the wire netting, and the wire nettings and / or the chain-like objects do not hinder the elongation of roots and the greening base material A plurality of net-like vegetation pockets having a mesh spacing capable of holding most of the above, and then spraying and / or throwing a greening base material on the slope including the inside of the net-like vegetation pockets. Surface greening method. 3. The net-shaped vegetation pocket has an inverted L-shaped bone body whose both ends are fixed to a slope and a net body attached to a suspended portion of the bone body to form a wall portion. 3. The slope greening method according to claim 1 or 2, characterized in that 4. The slope revegetation method according to claim 1, wherein a solidified revegetation base material is attached in advance as the net-shaped vegetation pocket. 5. The slope greening method according to claim 1, wherein the net-shaped vegetation pockets are arranged stepwise on a slope.