JP2747952B2 - Greening slope protection 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 method for protecting greening slopes, and more particularly to a method for protecting greening slopes for preventing collapse of greening slopes during snowfall.

[0002]

BACKGROUND OF THE INVENTION Conventionally, a method for greening a slope has been disclosed in JP-A-60-23523, JP-A-62-148721 and JP-A-2-144413, and JP-A-50-149102.
And JP-A-56-146517 and JP-A-62-82.
No. 122 and Japanese Patent Publication No. 60-28973.

[0003]

Any of the greening slopes produced by the method of the present invention is said to cause avalanches or landslides during rainfall or snowfall, and that the soil containing seeds and fertilizer sprayed on the slopes will flow out. Has disadvantages.

[0004] In the greening slope by the construction method described above, a wire mesh or a net is stretched on the surface in order to prevent the above-mentioned outflow of the soil, but in these techniques, the wire mesh or the net protrudes from the slope face. Since the snow load is applied to the stem of the plant, there is a disadvantage that the plant collapses.

[0005] In the revegetation method using the method described in the above, the plants are planted on the horizontal portions of the step-like portions formed on the slopes, so that they do not collapse due to the snow load but form the step-like portions. Not only is the construction of a mortar or concrete for reinforcing the surface of a weir frame or a customer's clay bag with pillars as a framework for the construction complicated and labor-intensive, but also the exposure to the slope surface is extremely high, which significantly impairs the natural scenery There is a disadvantage that.

[0006]

Accordingly, an object of the present invention is to provide an avalanche during snowfall,
A simple greening slope protection that can prevent the collapse of the slope such as the collapse of the plant or the outflow of the vegetation base due to the landslide, etc., and achieve the sufficient greening without damaging the natural scenery and protect and stabilize the slope. To provide a construction method.

[0007]

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, the greening slope protection method according to the present invention comprises:
Between the shoulder and the bottom of the vegetation base formed greening slope, a plurality of linear members intersect each other at an interval that does not inhibit the elongation of the plant stem and can pass through fallen leaves etc. And it is characterized in that it is stretched while keeping a distance from the slope surface.

In a preferred embodiment of the greening slope protection method according to the present invention, the intersection of the linear members is tightened, and a plurality of lock bolts are cast on the slope surface.
Ensuring the separation by locking the linear member to the lock bolt, tensioning a wire between the plurality of lock bolts, and attaching all or a part of the plurality of linear members to the wire. The separation is secured by erection and locking.

[0010]

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

FIG. 1 is a schematic front view of a greening slope for protection and stabilization by an example of the method of the present invention, FIG. 2 is a schematic sectional view of the same, FIG. 3 is a schematic sectional view showing another example, and FIG. It is a schematic front view of the greening slope which shows the other example of FIG.

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

[0013] The present invention relates to a constructed slope 1 of a vegetation base.
It is applied to secure and stabilize the protection (referred to as greening slope in this specification).

As shown in FIG. 2, the vegetation base is composed of a green wire mesh 2 laid on the surface of the slope 1, pins 3 for fixing the green wire mesh 2 to the slope 1, and sprayed green material 4. It is mainly composed. The greening wire mesh 3 does not necessarily have to be laid. For example, when vegetation 5 is vegetated on the entire slope 1, the state of the slope 1 (for example, gradient), the environment of the application site, the type of the plant 5, etc. It is laid in consideration of various conditions, and may not be laid. The greening base material 4 is mainly composed of various well-known materials mainly composed of corrosive soil (for example, peat moss or bark having water retention properties), a binder (resin or cement), fertilizer, seeds, and the like. It is.

The configuration of the vegetation base is not limited to the embodiment shown in FIG. 2. For example, as shown in FIG. 3, instead of directly blowing the green base 4 onto the slope 1 on which the green wire mesh 3 is laid,
It may have a configuration in which the greening base material 4 is sprayed or thrown into a plurality of net pockets 6 arranged stepwise on the surface of the slope 1, or may be applied to a greening slope where plants are naturally vegetated. You may. In addition, as the net pocket 6 shown in FIG.
FIG. 3 and the shape shown in FIG.
No. 170985, the shape as shown in FIG. 1 and a patent application filed on Oct. 23, 1991 by the present applicant (reference number = P5036, title of invention: slope greening method)
And the like can be adopted. The net pocket 6 may be provided with a reinforcing member such as a reinforced steel material as needed for reinforcement.
In addition, in order to guide the drainage, a drainage pipe may be provided in the net pocket 6 or the slope 1, or a drainage groove may be formed by spraying concrete.

In the present invention, the application to the greening slope 1 having the vegetation base is not limited to the case where the vegetation base has already been formed, but is applied continuously to the construction of the vegetation base. This includes cases where the construction is partially or simultaneously or overlapped.

An example of the protection method according to the present invention applied to the greening slope 1 will be described below.

First, a plurality of anchors 9 are placed on the shoulder 7 and the bottom 8 of the greening slope 1 at predetermined intervals. The spacing between the anchors 9 varies depending on the type of the greening slope 1 (for example, rock slope, cutting slope, embankment slope, earth and sand slope, etc.) and state (for example, soil hardness, inclination angle, etc.), It is preferably about 0.5 m to 2 m.

Next, the linear member 10 is obliquely crossed as shown in FIG. 1 (the crossing portion is shown as 10X), and
As shown in FIG. 2 and FIG.
And fixed to the anchor 9 of the shoulder 7 and the shoulder 8 so as to be stretched. The interval of the distance 10Y varies depending on the size of the vegetation 5 to be planted, the conditions of the greening slope 1, and the amount of snow in the applicable area, but at least about half or two-thirds of the average snow in the area. Securing a distance of 10Y can sufficiently apply the snow load to the linear member 10, so that the snow load on the surface of the greening slope 1 and the stem of the plant 5 can be reduced, and the plant 5 due to an avalanche can be reduced. Collapse and growth base outflow can be prevented. In order to secure the separation 10Y of the linear member 10, as shown in FIGS. 2 and 3, a lock bolt 11 is cast on the green slope 1, and
1 by locking the linear member 10. The distance 10Y can be changed, for example, the length of the lock bolt 11 can be changed, or the linear member 1 can be attached to the lock bolt 11.
If a plurality of 0 locking portions are provided to be selectively lockable so as to be adjustable, it is possible to secure an appropriate distance 10Y in accordance with a variation in the amount of snow and the growth of the plant 5. Linear member 1
As shown in FIG. 1, the two linear members 10 can be simultaneously locked at one position by locking at the crossing portion 10 </ b> X as shown in FIG. Can be reduced. FIG.
For convenience of explanation, the greening base material 4 is omitted and only one plant 5 is planted in order to clarify the intersecting state of the linear members 10. In FIG. 1, the arrangement of the lock bolts 11 is shown as a clean straight line in the horizontal direction.
Since it is often difficult to drive straight in accordance with the situation at the site, it is needless to say that the location at which the lock bolt 11 is driven is appropriately changed and adjusted according to the situation at the site.

In FIG. 1, all the linear members 10 are locked to the lock bolts 11 in order to secure the separation 10Y. However, as shown in FIG. The wire 10 may be secured between the lock bolts 11 by tensioning the wire 12 and all or some of the plurality of linear members 10 being erected and locked to the wire 12. According to this aspect, even in a position where the lock bolt 11 can not be driven, not only the separation 10Y of the linear member 10 can be ensured, but also the driving of the lock bolt 11 can be separated 10Y.
Can be limited to only effective positions in securing the number of lock bolts 11, so that the number of lock bolts 11 can be reduced, and there is an effect that simplification of construction work and efficiency can be achieved. In the embodiment of FIG. 4, the wire 12 is tensioned only in the horizontal direction, but may be tensioned in the vertical or oblique direction.

The plurality of linear members 10 can be integrated in a net shape by being tied at the intersection 10X, so that the strength is preferably increased. Tightening of the intersection 10X is performed by fastening with a clip member or binding with a binding wire or the like. As described above, when the crossing portion 10 </ b> X is at the locking position to the lock bolt 11, it may be tightened together with the lock bolt 11, or when the lock bolt 11 has a locking portion, Tightened by locking to the stop.

Further, the intersecting interval between the linear members 10 is the size of the mesh formed by the intersecting, that is,
The size of the gap between them is the interval that does not inhibit the elongation of the stem of the plant 5 and can pass through fallen leaves and the like, and specific values vary depending on the thickness of the stem or stem of the plant 5 to be vegetated. However, it is 100 mm to 500 mm, preferably 200 mm to 400 mm, for example.

Further, as the linear member 10 and the wire 12 to be used, not only wires such as a simple steel wire, but also a chain, a resin rope, and the like, or a high-performance fiber such as an aramid fiber or a carbon fiber may be used as a rod or a string. Can be used. When a chain is used as the linear member 10 and the wire 12, the fixing to the anchor 9, the connection and the fixing to each of the other constituent members such as the net pocket 6 and the lock bolt 11 are performed using each piece of the chain. Therefore, it can be easily and firmly fixed at an appropriate position. Moreover,
It is possible to flexibly cope with a change in the fixing position of each member due to a design change at the site or a specification addition over time.
When high-performance fibers are used as the wire member 10 and the wire material 12, the workability is high because they are lightweight, and rust prevention measures are unnecessary because they have weather resistance. The high strength reduces the number of stretches and / or reduces the diameter. It can be thinner and less noticeable. In addition, in the case of carbon fiber or the like, strength reduction after application of a high load, such as during an earthquake, can be easily determined by measuring an increase in electric resistance, so that strength management after construction is easy.

According to the present invention, the entire greening slope 1 is covered with a plurality of linear members 10 stretched in an intersecting state with a distance of 10Y, thereby preventing the plant 5 from collapsing or falling. can do. Further, as the plant 5 grows, the root of the plant elongates and integrates with the inside of the greening slope 1, and the stem and leaves of the plant 5 integrate with the linear member 10 and the intersection 10X of the linear member 10. Thus, the greening slope 1 can be protected and stabilized.
Moreover, according to the present invention, since the protection of the greening slope 1 is protected by the linear member 10 and the vegetation 5, a column with a high degree of exposure as described in JP-B-60-28973 is not particularly required. Not only is there no risk of damaging the landscape, but it can be applied to steep greening slopes 1 as well as gentle slopes.

Further, when snow falls, the linear member 10 is allowed to share the snow load and snow can be accumulated, so that collapse of the slope such as collapse of plants due to avalanches and landslides and outflow of growth bases can be prevented. .

Furthermore, in the case of the conventional wire mesh or net, it is difficult to apply the method to a greening slope where plants that have already grown have been vegetated. Can be easily constructed by sewing the fabric.

[0027]

According to the present invention, there is provided a structure in which the linear members are separated from each other and secured on the greening slope in an intersecting state.
Since the snow load can be shared between the slope and the linear member, it is possible to prevent collapse of the slope such as collapse of plants due to avalanches and landslides during snowfall and runoff of vegetation bases, and thus sufficient greening. In addition, the slope can be protected and stabilized, and the natural view is not impaired because the degree of exposure of the constituent members is low.

Further, according to the present invention, since the linear member can be stretched so as to sew between the plants, it can be applied to a greening slope where vegetation of already grown plants is vegetated.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a greening slope for stabilizing protection by an example of the method of the present invention.

FIG. 2 is a schematic sectional view of a greening slope of FIG.

FIG. 3 is a schematic cross-sectional view showing an example applied to another greening slope.

FIG. 4 is a schematic front view of a greening slope showing another example of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Slope 2 Greening wire netting 3 Pin 4 Greening base material 5 Plant 6 Net pocket 7 Leg shoulder 8 Law bottom 9 Anchor 10 Linear member 10X Intersection 10Y Distance 11 Lock bolt 12 Wire rod

Claims (4)

(57) [Claims] 1. A plurality of linear members are interposed between a shoulder and a bottom of a revegetation slope constituted by a vegetation base at an interval capable of passing a fallen leaf or the like without inhibiting the elongation of a plant stem. A greening slope protection method characterized by being stretched so as to intersect and be separated from the slope surface. 2. The greening slope protection method according to claim 1, wherein an intersection of the linear members is tightened. 3. The locking device according to claim 1, wherein a plurality of lock bolts are cast on the slope surface, and the linear members are locked to the lock bolts to secure the separation. Greening slope protection method. 4. A wire is stretched between the plurality of lock bolts, and the whole or a part of the plurality of linear members is erected and locked on the wire to secure the separation. The greening slope protection method according to claim 3.