JP3708908B2 - Slope protection method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a slope protection method for protecting a slope facing a built road or building.
[0002]
[Prior art]
As a conventional slope protection method, reinforcing bars attached to the left and right of the strip-shaped crimped wire mesh used as a formwork are arranged in a cross-girder shape, and solidified materials such as mortar and concrete are sprayed to form a cross-girder-like frame. This method is often used. There is also known a method for forming a simple method frame by spraying mortar or the like in a semicircular cross section along a reinforcing bar without using a mold.
[0003]
On the other hand, in civil engineering work, waste trees such as felled trees and tree roots are generated. As a treatment method, waste wood is chipped with a large shredder and the chip material is used as a vegetation base or composted. Attempts have been made to use it as a greening base material, or as a mulching material for the land of development.
[0004]
[Problems to be solved by the invention]
Since the above-mentioned conventional slope protection sprays a solidifying material such as mortar, it takes time for construction and curing, and the construction period becomes relatively long.
On the other hand, in order to use the chip material for a vegetation base, it is necessary to finely grind the chip and pass it through a 15 mm sieve, which increases labor and cost. In addition, the processing amount per unit area is relatively small.
Moreover, when using it as a greening base material, since it is necessary to perform a composting process separately in a compost manufacturing factory, and about 6 months are required for composting, it will still require time and expense. Furthermore, when using a mulching material, it is necessary to take measures against the loss of the chip material due to wind and rain.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to provide a slope protection method capable of simultaneously executing simple and low-cost slope protection and effective processing of a chip material.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1, on the slope, combines a plurality of wire meshes in a standing state to form a frame that is subdivided into a plurality of meshes of a predetermined shape, A method for protecting a slope, in which a chip material is filled in a frame, in which a stopper piece is bent at the upper edge toward the slope rising side of the slope on the whole or a part of the wire mesh. It is characterized by the fact that
In addition to the object of claim 1, the invention described in claim 2 fills the chip material after arranging a vegetation sandbag in a part of an arbitrary mesh in order to promote vegetation on the chip material. It is a method.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In FIG. 1, reference numeral 1 denotes a base material used in the slope protecting method of the present invention, in which both ends in the longitudinal direction of a band-shaped crimp wire mesh are bent in a U-shape in opposite directions, and a straight portion 2 and a connecting portion 3. 3 is formed. This base material 1 is formed, for example, with a length of the straight portion 2 of 640 mm, a length of the connecting portion 3 at both ends of 100 mm, and a height of 150 mm. In addition, it is desirable that at least one end edge in the longitudinal direction of the substrate 1 is subjected to a cutting process so that the short-direction wire does not protrude or is covered with a protective member over the entire end edge.
Further, 4 shown in FIG. 2 is an edge material similarly made of a band-shaped crimp wire mesh, and is formed with a length of 1105 mm and a height of 150 mm, for example, and this edge material 4 also has at least one edge in the longitudinal direction, It is desirable to perform the same cutting treatment as that for the base member 1 or protection by a protective member.
[0008]
A construction procedure for slope protection using the base material 1 and the edge material 4 configured as described above will be described. In addition, it is appropriate that the slope protection method of the present invention is applied to a gentle slope with an inclination of 40 ° or less.
First, as shown in FIG. 3, the construction range 5 on the slope is surrounded by edge members 4, 4. The connection between the edge members 4 is performed by fixing the ends overlapped with each other with a predetermined length with a metal fitting and a bolt. As for the corner portion, the ends of the two edge members 4 and 4 may be joined at right angles, or one edge member 4 may be bent at right angles and used. Appropriate portions of the edge members 4, 4...
[0009]
Next, within the range surrounded by the edge members 4, 4,..., The base materials 1, 1,. The range is subdivided by a plurality of meshes 6, 6..., And the connection parts 3, 3 are connected to each other by the metal fittings and bolts. At this time, the base materials 1 having different directions are connected to each other at the connection portions 3 and 3 depending on the positions of the sides forming the meshes 6,..., As shown in FIG. The bending directions are opposite to each other. Therefore, if both ends of the base material 1 in the longitudinal direction are subjected to cutting processing of the wire or covering of the protective member, the base material 1 is reversed in the width direction so that the connection portion 3 is bent in the right and left directions. Both can be used, but when the edge processing is only one, prepare two types of base materials 1 in which the bending direction of the connecting portion 3 is opposite to each other, and depending on the position of the side on which the mesh 6 is formed It is necessary to use properly.
And the suitable position of base material 1,1 ... is fixed with a retaining pile similarly to the rim material 4. FIG.
[0010]
In this way, after forming the frame 7 subdivided into the meshes 6, 6... By the base materials 1, 1 .. and the edge members 4, 4..., As shown in FIG. Are arranged at the corners on the slope descending side of the vegetation sandbags 8, 8,... Having substantially the same height as the base material 1, and the chip material 9 is placed in the frame 7 at the other portions. 4 is filled up to the same height, and the chip material 9 is spread in the frame 7 except for the vegetation sandbag 8. Note that it is desirable to reinforce the edge material 4 by placing, for example, weights of vegetation sandbags 8, 8,... On the outside of the edge materials 4 and 4 on the gradient descending side (outside of the frame 7). Further, after the chip material 9 is filled, a net may be stretched on the surface of the frame 7 to prevent the chip material 9 from scattering, or a resin may be sprayed to solidify the surface.
[0011]
According to the slope protection method configured as described above, the chip material 9 having a problem in processing can be used in large quantities regardless of the size, and the chip material 9 can be effectively processed.
In particular, since a wire mesh is used for the base material 1 and the edge material 4 that form the frame 7, the drainage of the filled chip material 9 is improved, and the roots of plants planted on the vegetation sandbag 8 and the chip material 9 are improved. Is widely and deeply entangled, and the base material 1, the edge material 4 and the chip material 9 are well adapted to lead to further stability of the slope. Moreover, since there is flexibility in the joint portion between the connecting portions 3, it is easy to adapt to the shape of the slope, and the frame 7 and the slope can be closely attached. Furthermore, since the frame 7 can be formed with a light wire mesh without using a solidifying material such as mortar, it is excellent in workability and economy, and the construction period can be shortened.
Here, since the vegetation sandbags 8 are arranged in the meshes 6, 6, and so on, and the chip material 9 is filled, the vegetation on the chip material 9 can be promoted.
[0012]
For example, as shown in FIGS. 6 and 7, the base material 1 and the edge material 4 are formed by bending belt-like stopper pieces 10 and 11 at right angles over the upper edge of the straight portion 2. In this way, if the edge piece 4 is arranged so that the stopper piece 11 faces the inside of the frame 7, and the base material 1 is arranged so that the stopper piece 10 faces the slope upward side (that is, the left side and the right side of the mesh 6). In the base material 1, the bending directions of the stopper pieces 10 are opposite to each other), and the stability of the chip material 9 for each mesh 6 is more effectively obtained. However, these stopper pieces do not necessarily have to be provided over the entire length of the straight portion of the base material or the rim material, and the length may be shortened in the direction of the straight portion of the base material or a plurality of the stop pieces may be provided intermittently. There is no problem. Further, the protruding length of the stopper piece can be made longer, or it can be formed in an inclined shape so as to gradually increase to the left or right instead of the belt shape. Furthermore, it is also possible to provide a stopper piece on a part of the base material or edge material. Other construction methods are the same as the procedures shown in FIGS. 3 to 5, and naturally the same effects can be obtained.
[0013]
In addition, the shape of the mesh is not limited to the above form, and if the inside of the frame can be subdivided into a predetermined shape, a polygon such as a triangle or a pentagon can be selected in addition to a quadrangle, and the substrate is also mesh-shaped. It can be changed to suit. Further, the base material can be arc-shaped and subdivided into a continuous waveform or a continuous circular mesh.
And in the above-mentioned form, the vegetation sandbags are respectively arranged in the meshes, but it is not always necessary to put each vegetation mesh, and the vegetation sandbags are arranged for each predetermined number of meshes, or the meshes filled only with the chip material and Changes such as alternately forming a mesh with only vegetation sandbags are possible. Of course, the vegetation sandbag may be eliminated and the entire frame may be filled with the chip material.
[0014]
【The invention's effect】
According to the first aspect of the present invention, it is possible to use a large amount of the chip material having a problem in processing regardless of the size, and the chip material can be effectively processed. In particular, since the wire mesh is used to form the frame, the drainage of the filled chip material is improved, and the roots of the vegetation planted on the chip material are wide and deeply entangled so that the wire mesh and the chip material fit well. This leads to more stable slopes. Moreover, since the joint part of the connection part of a metal mesh has flexibility, it is easy to adapt to the shape of a slope, and the close construction of a frame and a slope becomes possible. Furthermore, since a frame can be formed with a light wire mesh without using a solidifying material such as mortar, it is excellent in workability and economy, and the construction period can be shortened.
And the stability of the chip | tip material for every mesh can be obtained more effectively by using the metal mesh which bent the said stopper piece for all or one part.
According to invention of Claim 2, in addition to the effect of Claim 1, it was set as the structure filled with a chip material after arrange | positioning a vegetation sandbag in a part in arbitrary meshes, Vegetation can be promoted.
[Brief description of the drawings]
FIG. 1 is a plan view and a front view of a substrate.
FIG. 2 is a plan view and a front view of an edge member.
FIG. 3 is an explanatory view showing a construction method.
FIG. 4 is an explanatory view showing a construction method.
FIG. 5 is an explanatory view showing a construction method.
FIGS. 6A and 6B are a plan view and a front view showing a modification example of a base material. FIGS.
FIGS. 7A and 7B are a plan view and a front view showing a modified example of the edge material. FIGS.
FIG. 8 is an explanatory diagram showing a construction method using a base material and an edge material according to a modified example.
[Explanation of symbols]
1 .... Base material 2 .... Linear part 3 .... Connection part 4 .... Edge material 5 ... Working range 6 .... Mesh, 7 .... Frame, 8 .... Vegetable sandbag, 9 .... Chip Material 10, 11, ... Stopper piece.

Claims (2)

On the slope, in combination with each other a plurality of wire mesh in an upright state, to form a frame is subdivided into a plurality of mesh of a predetermined shape, a slope protection method comprising filling the chip material in that the frame ,
A slope protection method, wherein a part of the wire mesh is formed by bending a stopper piece on the upper edge toward the slope rising side of the slope on all or part of the wire mesh .   The slope protection method according to claim 1, wherein the tip material is filled after disposing a vegetation sandbag in a part of an arbitrary mesh.

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