JPH0651977B2 - Slope protection material and slope protection / greening method using the slope protection material - 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 protection material used for slope protection / greening and a slope protection / greening method using the slope protection material.

[0002]

2. Description of the Related Art Conventional slope protection methods and materials used for them are as follows: (1) A semi-circular perforated steel ring assembled in a circle is laid on the slope and connected to each other (trade name). Drain ring). (2) A frame material is constructed by assembling a frame material formed of expanded, mesh-shaped lightweight steel described in JP-A-55-36557 (trade name: Sumitect). (3) A method in which the slope is covered with a net frame material described in JP-A-56-16730, in which continuous square cells are formed when extended. Have been put to practical use or proposed.

However, all of them have a large volume during storage / transportation, and since they use a heavy-weight steel sheet forming material, they have disadvantages such as inconvenience of storage / transportation of materials and a great deal of construction work in assembling. there were.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and is lightweight and has a small volume of packing before construction, and has a function of holding soil after construction. The purpose of the present invention is to obtain a slope protection material having a large holding power for sprayed mortar and concrete, and to obtain a slope protection / greening method using the slope protection material.

[0005]

A slope protection material according to the present invention is a sheet material having flexibility and a predetermined rigidity, and a plurality of rope materials having a corrugated shape and arranged in parallel with a predetermined width interval. It is a sheet-shaped slope protection material that is fixed and has cuts reaching the top of the corrugation of one rope material in a c-shape in a portion between the rope materials.

In the slope protection / greening method according to the present invention, a sheet-shaped slope protection material is spread on the slope and fixed by an anchor, and then the entire spread slope protection material is sprayed with mortar or It is covered with concrete or vegetated on the soil.

[0007]

In the sheet-shaped slope protection material according to the present invention, when one end of each rope material is fixed and the other end is pulled and stretched, the end point of each cut (corrugation of the rope material of the rope material formed in the sheet material. A force is applied to the sheet material to deform it so that each apex is located on a straight line, the cuts open accordingly, the sheet material bends, and the surface that stands up against the rope material (hereinafter referred to as "standing surface") Are formed at each cut between the sheet materials.

The sheet material thus deformed is supported by the soil that has been soiled and the sprayed mortar mainly on its upright surface to convey its weight to the rope material, and the rope material supports the weight. It shares the two functions required for slope protection materials. Therefore, the sheet material is strong enough to hold the soil from one cut to the next,
It is sufficient if it has sufficient rigidity to prevent it from easily falling when applying soil or spraying, while the rope material needs to have sufficient tensile strength to support the weight of soil or mortar added through the sheet material. Since materials suitable for the respective required functions can be used, the overall weight is light and flat before expansion, resulting in a small packing.

Further, the slope protection / vegetation construction method according to the present invention fixes one end of each rope material of the slope protection material to an anchor placed on the side end of the slope surface, and when the space is insufficient, the rope material The ropes are tied together and a slope protection material is added, and the other end of the rope material is pulled and stretched until it is straight and fixed to the anchor placed on the slope. By the extension of the rope material, the sheet material forms an upright surface at the cut portion. In this case, when there is unevenness due to a protrusion on the slope, the sheet material that abuts on it buckles and runs along the slope, and when the uneven portion is a recess, the sheet material stands up. So it functions to cover the recess. Laying work of such slope protection material is performed over the entire slope. When the slope does not require a soil, the slope protection work is completed as described above, and the slope protection material acts to receive the soil that is about to collapse or be washed away from the slope and hold it.

When soil is applied to the slope, the slope protection material is laid and then soil is sprinkled out until the sheet material is almost filled. The sheet material receives soil on the upright surface, and the rope material bears the weight through the sheet material. After laying a slope protection material on the slope and applying it to the soil, or applying greenery to the soil, it is possible to prevent soil from flowing out until the slope is greened.

When mortar or concrete is sprayed and covered on the entire slope where the slope protection material is laid,
Since the slope protection material holds mortar and the like by fixing the mortar and the mortar on a wide surface through the sheet material, the mortar and the like can be held more firmly.

[0012]

【Example】

Example 1. FIG. 1 is a plan view of a first embodiment of the present invention. For example, a nylon rope, which is an example of a rope material 2 made of a compatible resin sheet material, is adhered to the sheet material 1 at regular intervals in an arc waveform. In the portion between the rope members 2, cut lines 3 extending from the vicinity of the top of each corrugation of each rope member 2 to the vicinity of the tops of the adjacent left and right rope members are formed in a V shape to form a slope protection member 4. is doing.

One end of each rope member 2 of the slope protection member 4 constructed as described above is bound and fixed to an anchor placed on the slope, and the other end of each rope member 2 is pulled to be on the slope. When stretched, the notch 3 is opened and the rising surface of the sheet material 1 along the stretched rope material 2 is formed over the entire surface.

Example 2. FIG. 2 is a plan view of a second embodiment of the present invention, showing a rope material 2 knitted into a sheet material 1 by a Russell machine. The sheet material 1 is knitted with a strong thread and the rope material 2 is thick. The sheet material 1 is knitted in the fixing portion 5 using a cotton thread or the like. Similar to the first embodiment shown in FIG. 1, the cut 3 is formed in a V-shape extending from the vicinity of the top of the corrugation of each rope member 2 to the vicinity of the tops of the adjacent left and right rope members 2.

When the sheet material 1 is a material having a weak stiffness, the sheet material 1 is self-supporting when the rope material 2 is stretched by impregnating it with a thermosetting synthetic resin or by impregnating it with a thermoplastic synthetic resin and curing it. It imparts rigidity to the extent possible.

It should be noted that the sheet material 1 has the above-mentioned first and second embodiments.
, A knitted fabric, a woven fabric, a non-woven fabric, paper, or those in which a synthetic resin is impregnated to increase water resistance and rigidity, a synthetic resin film laminated for the same purpose, a synthetic resin sheet, or a synthetic resin sheet. Slope protection is made by using a resin net material and combining it with a natural fiber such as cotton or hemp or a rope made of synthetic resin such as vinylon or nylon, or a blended rope of these or a chain made of synthetic resin. Suitable for chemical engineering.

As the slope protection material for heavy loads, a mesh steel sheet having good adhesion to concrete, a steel net material such as lath wire mesh or the like coated with synthetic resin on the sheet material 1 is used. The material 2 is preferably a steel wire, a wire rope, a steel chain, or a material obtained by coating these with a synthetic resin, or a material using a high-strength member such as a carbon fiber rope.

The means for fixing the sheet material and the rope material include sewing, braiding, bonding, welding, fastening using a fastening member, etc., depending on the materials used.

Example 3. Next, one embodiment of the slope protection / greening method according to the present invention will be described. One end of each rope member 2 is bound and fixed to anchors that are placed on the slope at appropriate intervals, and the other end of each rope member is bound and fixed to anchors that are placed on the slope. An anchor is also installed at a portion where the slope protection material 4 floats up because the slope is largely uneven, so that the slope protection material 4 extends along the slope. Next, the soil is sprinkled out, and the soil is protected to the extent that the slope protection material 4 is buried.

Next, when greening is applied, grass is attached or seeded.

When the slope is covered with mortar or concrete, mortar or concrete spraying is applied instead of the earthwork.

[0022]

EFFECTS OF THE INVENTION The slope protection material according to the present invention is effective in that when the rope is stretched, the sloped surface formed by the cut portion of the sheet material allows soil on the slope and soil in the soil to flow out. Can be stopped. The sheet material holds mortar and concrete sprayed on the slope, and the rope material bears these weights through the sheet material. In this way, since the rope material of the sheet material shares the function of holding the soil and the tensile strength that supports the weight of the soil, by selecting and combining the materials suitable for each function, A slope protection material that is lightweight and has excellent functions can be obtained.

Further, since the sheet-like shape is small before the construction and the volume of the packaging is small, it is convenient for storage and transportation, and since it is lightweight, the construction of slope protection and revegetation is easy.

Further, according to the slope protection / greening method according to the present invention, the slope is covered with a sheet-shaped slope protection material, and the cut portion made in the sheet material is tensioned by the rope material. The soil and mortar that have been soiled are held on this upright surface, and since the weight of these is supported by rope material, the soil that has been soiled can be prevented from flowing out and mortar, etc. can be blown out. When attached, they can together form a strong protective surface.

[Brief description of drawings]

FIG. 1 is a plan view of a first embodiment of a slope protection material according to the present invention.

FIG. 2 is a plan view of a second embodiment of a slope protection material according to the present invention.

[Explanation of symbols]

 1 sheet material 2 rope material 3 cuts 4 slope protection material

Claims (2)

[Claims] 1. A sheet material having flexibility and a predetermined rigidity, and a plurality of rope materials fixed to the sheet material in parallel with a constant width interval and in a constant corrugated shape. The slope protection material is formed by forming a cut in the shape of a V from the vicinity of the top of each corrugation of each rope material to the vicinity of the top of the corrugation of the adjacent left and right rope materials. 2. A plurality of rope members are fixed to a sheet member having flexibility and a predetermined rigidity in parallel and in a constant corrugated shape at a constant width interval, and each rope member is attached to the sheet member. The slope protection material, in which the notches extending from the vicinity of the top of each corrugation to the vicinity of the top of the corrugations of the adjacent left and right ropes are formed in a V shape, is spread on the slope and fixed with an anchor, and then A slope protection / greening method in which the entire surface of the slope protection material that covers this slope is covered with mortar or concrete by spraying or soil is used for vegetation.