JPS59126824A - Structure for greens-planting work and slope greens- planting work therewith - Google Patents

Abstract

PURPOSE:To prevent the outflow of soil to the outside of a structue by using the structure for greens-planting work, having a roughly structured interlacing layer and a sensely structured interlacing layer made of a high-strength synthetic fiber and connected in the longitudinal direction. CONSTITUTION:A structure 1 for greens-planting work of a slope is made of high-strength synthetic fibers 2 connected in the longitudinal direction of a structure 1. The high-strength synthetic fibers 2 consist of a roughly structured interlacing layer 3 and a densely structured interlacing layer 4. The preferred size of the high-strength synthetic fiber 2 is in the range of 1,000-10,000denier. The roughly structured interlacing layer 3 has a porosity range of 95-99%, and the densely structured interlacing layer 4 has a porosity range of 40-95%. The structure 1 is fixed to a slope 11 with anchors 12, and a metal net 13 is placed on the structure 1 and fixed to the slope 11 with anchors 14. Soil is sprayed onto the interlacing layer 4, and thereby the soil moves into the interlacing layer 3. The outflow of the soil to the outside of the structure 1 can thus be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a structure for promoting greening of a slope and a greening method using the structure. Recently, forests are often cut open to create housing lots or roads, and this has resulted in landslides and landslides from both sides of roads after construction.
Many slope greening techniques have been proposed for the purpose of stabilizing slopes to prevent collapse and creating green areas.

For example, "corrosion-resistant fibers such as synthetic resin fibers are entangled in a state in which there are harmonic voids, a plate-like object is constructed by entwining them with a corrosion-resistant bridge material such as synthetic resin, and the roots are inserted into the voids of the above-mentioned plate-like material. A mat for civil engineering work that is filled with earth and sand along with the seeds of the grass to be spread, and as the grass grows, military aircraft and plate-like materials work together to suppress the collapse of the earth and sand.'' Publication No. 5). When it is laid on a slope and covered with soil for vegetation, it has voids that allow grass roots to penetrate and become integrated with the earth and sand, and has a tensile strength that prevents the slope from peeling off and falling down. The slope is characterized by being made by bending and stacking synthetic resin fibers and filaments with high elasticity and tensile strength and firmly bonding them with adhesive, or by piercing them with a piercing needle and entangling the fibers. "Tensile Reinforcement Mat" (Japanese Patent Publication No. 46-40165). ``The entire structure is made of a tangle of open synthetic fibers with a sheep fiber fineness of 200 to 20,000 deniers!! (,) A high-density mat layer mixed with plant seeds, earth and sand, fertilizers, and soil stabilizers, and (b) ) The above-mentioned - Structure for preserving slopes for vegetation formed by laminating and integrating the low packing density mat layer consisting only of hair (1986)
-121506). ``A net base is formed on the slope by a wire mesh and a plurality of coil nets provided in parallel in the vertical direction on the surface of this wire mesh, and on top of this mesh base, soil is the main component.
A greening soil mixed with a curing agent and a greening base material is sprayed on this to create a greening base as additional soil, and plant seeds are sprayed onto this base. Publication No. 55-98533'). By the way, the main construction method these days is the soil spraying method mentioned above. This is a construction method in which soil mixed with plant seeds, earth and sand, fertilizer, soil stabilizer, water, etc. is sprayed onto structures for greening slopes using a compressor, mortar gun, etc.; The slope greening structures used had the following problems.

(1) When spraying soil, it is not easy to uniformly fill the inside of the slope greening structure with soil. In order to uniformly fill the inside of the structure with soil, the porosity of the structure must be sufficiently high.

(21 On the other hand, the soil filled inside the structure must not flow out of the structural pipes, but if the porosity of the structure is high, the soil with fluidity (viscosity) may flow outside the structure. Since the soil will be washed away, it will take some time for the soil poured into the structure to harden due to the blowing, and losses due to washing away will be inevitable.

(3) In addition, when the porosity of the structure is lowered, the area of the plane on the surface of the structure becomes larger, which blocks the sprayed soil from entering the inside of the structure, thus preventing it from being poured into the 13th part of the structure. Loss due to falling soil on the surface of the structure cannot be avoided.

Furthermore, if the porosity of the structure is low, it is difficult to fill the inside of the structure from the outside, which creates a void, making it difficult to uniformly fill the inside of the structure with soil.

(4) Furthermore, some of the slopes on which greening is being promoted are extremely gentle, but others are steep slopes of 10 to 30 degrees to the vertical, or in some cases, slopes that are negative to the vertical. There are slopes carved out by 5 to 20 degrees. If conventional slope greening structures are used on such slopes, it is extremely difficult to construct a greening base on the slope, and it is not possible to create a satisfactorily uniform greening base.

The present invention was devised to solve such conventional problems. That is, the present invention provides: [(1) A structure for greening slopes, which is a longitudinally continuous fiber entangled body made of high-strength synthetic fibers, has flexibility, and has a layered layered layer.

(2) A slope greening structure according to claim (1), in which homogeneous fertilizers are dotted inside the fiber entangled body.

(3) A slope greening method characterized by implementing the steps (a) to (i) below and constructing a greening board on the slope.

(b) On the slope, a longitudinally continuous fiber entangled body made of high-strength synthetic fibers, which is flexible and forms a layered layer of dense and dense layers (1 structure 1) is laid. .

(b) Spread a net over structure 1 and fix structure 1 and the net to the slope. (c) Plant seeds, earth and sand, fertilizer, soil stabilizer.

Pour soil mixed with soil conditioner, water, etc. from the top of the mesh.

(4) 1+ for interspersing solid fertilizer inside the fiber entanglement! The slope greening method according to claim (3), which has the following characteristics. ”.

The structure of the present invention will be explained with reference to the drawings. FIG. 1 is a front view of the slope greening structure of the present invention, and FIG.
- It is a sectional view in the A' plane.

In the first F-4, 1 is the structure of the present invention (1), 2 is a high-strength synthetic fiber continuous in the longitudinal direction of the structure l, 3 is an entangled layer with a loose structure, and 4 is an entangled layer with a dense structure. layer.

5. These are both ends of the 6-digit structure, and the longitudinal direction is the direction from 5 to 6 or from 6 to 5. 7 and 8 are the image sides of the structure.

FIG. 3 is a front view of the structure 10 of the present invention, and 9 is a solid fertilizer held in a loosely structured entangled layer.

FIG. 4 is an explanatory diagram of the slope greening method of the present invention, and is a floor plan after construction immediately before spraying soil on the slope. l is the structure l of the present invention, and 11 is a slope.

12Fi is an anchor for fixing the structure to the slope 11, and 13 is a wire mesh to further stabilize the structure 1 on the slope.
14 are anchors for fixing both the wire mesh 13 and the structure 1 to the slope.

The q+j characteristics of the structure 1 in the present invention are as follows.

+11 The structure has a hierarchical sparse and dense structure consisting of a loosely structured entangled layer and a densely structured entangled layer.

(2) Must have (μ) high-strength synthetic fibers that are continuous in the longitudinal direction of the artifact as an integrated object.

(3) The structure has flexibility.

An entangled layer with a loose structure has a porosity in the range of 95 to 99%, preferably 97 to 98 inches, and an entangled layer with a dense structure has a porosity in the range of 40 to 95% (including 95 inches). No, preferably 90~
A range of 95% is preferred. High-strength synthetic fibers that are continuous in the longitudinal direction of an integral structure include 1
000-100. It is preferable to use a material with a fineness in the range of OO denier. multifilament.

Spun yarn etc. may be used which is nuclided with resin by pultrusion molding, but in order to shorten the process, monofilament of hydrophobic fiber or coating the filament with low melting point resin may be used.
It is preferable to use a

The thickness of the structure varies depending on the condition of the slope, but is between 1 oa and 2 oa.
It is preferable to select it within the range of 0 crn. In the case of soft soil slopes, 14 to Crn, preferably 3 to 8 cIn,
In the case of a slope of a rock plate, it is recommended to select 5eff to 20Crn, preferably 8 to 12Crn. The length in the longitudinal direction of the sparse structure layer is 50 to 200 cyy+, preferably Fi80
-cIn~120 cm, the length of the dense structure layer in the longitudinal direction is 5#! It is good to choose WF~20cm, preferably 8~12ff.

The high-strength synthetic fibers are irregularly bent to form an entangled layer and are continuous from one end 5 to the other end 6. The number of high-strength synthetic fibers depends on the fineness, but it is preferably used in a range of 4 to 12. If necessary, the amount of entangled R cotton may be bonded multiple times by fusion, adhesion, or other methods to improve the strength and form stability of the structure. Therefore, a composite high-strength synthetic fiber whose core has a high melting point and whose sheath has a low melting point may be used.

The dense structure layer may be formed by increasing the density of high-strength synthetic fibers, but the structure with a sparse structure may be filled with LS fibers at regular intervals and bonded.

They may be combined by fusion or the like to form a dense structure layer.

If necessary, the periphery of both side surfaces 7 and 80 may also be formed into a dense structure layer.

The structure as a whole has recurrent properties. To make a structure flexible, the strength must be within a certain range.

Choose a high-strength synthetic material with good elongation and Young's modulus, or
This can be done by setting the porosity of the sparse structure layer within a certain range.

The net-like material in (3) and (4) of the present invention is a synthetic fiber.

Although natural fibers, inorganic fibers, etc. may be used, it is preferable to use a diamond-shaped or honeycomb-shaped wire mesh in order to stabilize the shape of the slope. To fix structures and net-like objects, ordinary anchors can be driven and fixed. Conventionally known spraying methods are used to pour the soil.

Injection is usually performed by a blowing method, but is not necessarily limited to the blowing method. Any means for injecting soil from the outside into the structure of the present invention may be used. Also, the structure 1 of the present invention
0 has the following features in addition to the features of structure 1 described above.

(1) Solid fertilizer is retained in a scattered manner inside the structure 1.

Here, the term "spotted" means that the solid fertilizer moves through the soil and is scattered at a distance where it can effectively work for several years for the growth of the entire plant. As a solid fertilizer, commonly used compound fertilizers such as nitrogen, phosphoric acid, and caustic acid, such as Wood Ace (Mitsubishi Kasei ■fX), can be used. -16 pieces are preferably scattered at equal intervals.

In order to hold the solids inside the structure, for example, it may be held in a densely structured entangled layer, or a solid fertilizer housed in a mesh bag may be glued or suspended in a sparsely structured entangled layer. They may be combined by a method such as the following. As a result of the structure of the present invention, the present invention has the following advantages.

(1) When spraying soil into the structure of the present invention using the soil spraying method, if the soil is sprayed toward the sparse structure layer of the structure, the inside of the sparse structure layer can be easily filled uniformly. Then, the weight of the top soil increases, and the top soil in the sparse structure layer gradually migrates into the dense structure layer, filling the inside of the dense structure layer and stopping at the point where the top soil transfers. The dense structure layer acts as a so-called "6-frame". Therefore, there is almost no leakage of soil outside the structure frame, which occurs when conventional structures are used.

(2) Since the structure of the present invention has a height of 4W1 m, which can be called a multi-stage saucer system, it has a steep slope of 10 to 30 degrees to the vertical plane, or a scale angle of -5 to 20 degrees to the vertical plane. It can also be used for slopes that have been carved into the slope (hereinafter referred to as steep slopes).

(3) Since the structure of the present invention uses high-strength synthetic fibers that are continuous in the longitudinal direction, it can be used not only on gentle slopes, but also on steep slopes. The structure can withstand even the most severe damage.

(4) Since the structure of the present invention has flexibility as a whole, it can be constructed in a way that suits the shape of the slope, even on extremely uneven slopes, especially steep slopes.

(5) The structure 10 of the present invention has solid III inside the structure.
'! Since the benefits are maintained in a scattered manner, there is no need to add fertilizer for several years after construction. In addition, after a few years of pups, the plants grow large and begin to grow by themselves by absorbing nutrients from the ground.

[Brief explanation of the drawing]

FIG. 1 is a front view of a structure 1 of the present invention. FIG. 2 is a sectional view taken along the line A-A' in FIG. 1. FIG. 3 is a front view of the structure 2 of the present invention. FIG. 4 is an explanatory diagram of the clear surface greening method of the present invention. lhThe structure of the present invention (1), 2 is a high-strength synthetic fiber continuous in the longitudinal direction of the structure 1, 3 is an entangled layer with a loose structure, 4
An entangled layer with a dense structure, 5 and 6 are both ends of the structure, 7 and 8 are both sides of the structure, 9 are solid fertilizers, 10 is the structure of the present invention (2), and 11 is a slope. 12 and 14 are anchors, and 13 is a wire mesh. Patent applicant: Teijin Ltd. Procedural amendment February 15, 1980 Mr. Commissioner of the Japan Patent Office 1. Indication of the case Patent application No. 1737 1982. Title of the invention 3. Person making the amendment 1-11 Minamihonmachi, Higashi-ku, Osaka (300) Representative Tomoo Tokusue (and 1 other person) Teijin Limited

Claims (1)

[Scope of Claims] 0) A slope greening structure 1° (2 ) Slope greening structure 10° according to claim (1), in which solid fertilizer is dotted inside the fiber entangled body (3) Slope greening structure 10° (3) A slope greening construction method characterized by constructing a greening board. B) A fiber entangled body made of strong synthetic fibers that is continuous in the longitudinal direction and is flexible and has a layered structure. A structure l forming a dense layer is laid. (b) A net-like material is stretched over the structure 1, and the structure 1 and the net-like material are fixed to the slope. Q) Plant seeds, soil, fertilizers, soil stabilizers, soil improvement materials,
Pour soil mixed with water etc. from the top of the mesh. (4) The slope greening method according to claim (3), characterized in that solid fertilizer is dotted inside the fiber entangled body.