JPS6011969Y2 - Vegetation sandbag bag - Google Patents

Description

[Detailed description of the invention] The present invention relates to vegetation on cut slopes and earth embankment slopes, and to a bag for vegetation soil that can be applied to slope stabilization, and more specifically to a bag for use on steep slopes, especially when the ground is bare. This article relates to bags for vegetation soil used within the framework of various methods of construction.

In recent years, as a slope stabilization method, the vegetation method has been widely used because it is preferable from the viewpoint of environmental conservation and aesthetics, and is inexpensive.

Vegetation construction methods include seed spraying, turf construction, etc., but the bare ground on the steep slope that is the purpose of this invention is often made of bedrock or fractured zones, where the soil collapses violently, exposing the subsoil, and causing weather changes. As a result, soil temperature fluctuates widely and tends to dry out.

These environmental conditions are extremely unfavorable to plant growth.

Immediately after the construction of vegetation, turfgrass has low resistance to dryness and is at an extremely high risk of dying.

In other words, when seeds are sown on a slope, they absorb moisture, the cells begin to activate, and produce roots and leaves.

The amount required for germination is about 20% (at 20° C.) of the air-dried amount of seeds for Kentara Key 31 Huesque.

The water required for growth must be about 60% of the soil's maximum water capacity.

At the time of germination and the subsequent stage of seedlings, the roots are not yet fully established, so although the water supply range is narrow,
Cells are already active, so if they run out of water, they will quickly die.

Once the plants grow a little larger and have some roots, the risk of them dying becomes much smaller.

The warning for vegetation workers is to first secure moisture.

Unlike construction methods that use concrete or stone, vegetation works do not begin to function as soon as construction is completed; they only become effective once grass has sufficiently grown and completely covered the slope.

This will take several months, but unless measures are taken to prevent erosion from starting during that time, vegetation material and even turf grass once established will be lost.

Furthermore, if the ground is bedrock or in a fractured zone, the ground is too hard for the roots to penetrate, and even if the roots do get in, there is little moisture, so sufficient growth cannot be expected.

For the above reasons, vegetated sandbags are often used within the legal framework.

Conventionally used vegetation sandbags are often made of coarsely woven or braided natural or chemical fibers and have a storage area for seeds and fertilizers on a part of the inner surface of the bag. .

Most of the rough-textured bags are made of jute, but even if the vegetated sandbags inside the legal framework installed on steep slopes are fully developed, the jute bags will corrode within a few months, so they cannot be used in heavy rainfall. In this case, the bag body must be made of a material that will not corrode for at least several years, as it is often washed and sealed.

Polyolefin tape fabrics are also often used, but in areas where the natural environmental conditions are poor for vegetation, such as bare areas on steep slopes, it often takes several months or more for turfgrass to propagate sufficiently and completely cover the sandbags. Deterioration progresses and the bag often breaks.

Furthermore, since the tape fabric is a woven fabric when roughened, when stress is applied from a certain direction, the weave of the tape fabric is deformed, resulting in a significant decrease in workability.

Since the bag made of braided chemical fibers has a weight of 20 kg or more of earth and sand, it tends to stretch locally and break when the vegetative sandbag filled with earth and sand is transported to the installation site.

In other words, a normal net-like material stretches in a diamond shape in the direction of strong stress, and stress is concentrated on the stretched portion.

In addition, the elongated portions cause the mesh to become clogged.

Synthetic resin nets are manufactured by directly extruding synthetic resin into a rhombic mesh shape, so it is difficult to stretch the filaments that make up the mesh after molding, so the elongation is large, and the filling is made of earth and sand. The net stretches due to its own weight, significantly reducing work efficiency.

In the early stages of turfgrass growth, there is considerable root elongation pressure, but the leaves are extremely weak, so it is best to keep them rough to avoid damage as much as possible, but water evaporates rapidly at this height.

Therefore, it is necessary to use water retention agents within the vegetation zone or in the soil filling.

The inventor of the present invention completed the present invention as a result of extensive research in order to overcome the above-mentioned drawbacks.

In other words, the present invention arranges the weft threads between the upper and lower two layers of warp threads arranged so that the sides to which the vegetation belt is attached are alternately spaced at equal intervals, or between the upper and lower two layers of warp threads arranged to almost overlap. A coarse bag is made of a net-like material formed by joining the intersections of threads, and a part of the inner or outer surface of the bag is made of a highly swellable water-retaining agent and natural or chemical fibers. This bag is made by attaching a vegetation belt supporting seeds and fertilizer to a non-woven sheet made of woven fabric.

The bag 1 is constructed by arranging weft threads 3 between upper and lower two layers of warp threads 2° and 2' arranged alternately at equal intervals as shown in Figs. 1 and 3, and by gluing or fusing the intersections of the threads. At least one surface thereof is constructed of a net-like material that is bonded together.

Fig. 4 shows another embodiment of a net-like material, in which a weft thread 3 is arranged between two layers of upper and lower warp threads 2 and 2' that are arranged almost overlapping each other, and the intersection points are glued or fused. At least one surface thereof is constructed of a net-like material formed by bonding together.

The material of the thread constituting the net-like article in the present invention is preferably one that is highly stable against hydrolysis, disintegration by soil microorganisms, and deterioration changes in fine soil, such as polyester fiber, polyamide fiber, polypropylene fiber, glass fiber, etc. A thermofusible material is preferably used.

It is preferable that these fibers be sufficiently drawn during fiber production.

As the yarn forming the net, long fibers of these fibers are usually used, but split yarns and spun yarns may also be used.

The fineness of the thread used varies depending on the purpose of use, but it is 100
~3000 denier is suitable.

The eyes of the net-like object are square or rectangular, and the length of the side is 2.
Yrrrs or more preferably 5 to 1or! FM is suitable.

The intersection of the warp and weft threads is made by using an adhesive or by fusing the fibers to form stitches.

As the adhesive, one that is excellent in stability and strong like the fibers constituting the thread is used, and examples thereof include incyanate adhesive, polyvinyl chloride, and epoxy adhesive.

For adhesion, the entire net-like material may be coated with an adhesive.

However, those with poorly grown leaves will gradually be leached out by rainwater,
It is also effective to use adhesives that reduce inhibition effects.

The bag on the side to which the vegetation strip is not attached may have a finer mesh than the side on the adhesive side.

The net-like material used in the present invention is, for example, JP-A No. 49-1
It can be easily produced by the method described in Japanese Patent No. 34978.

Highly swellable water retaining agents that can provide sufficient moisture required for germination and growth of plants in the vegetation zone used in this invention include:
A fine molded product made of highly swellable bentonite and a water-absorbing polymer is used.

Highly swellable bentonite can be prepared by mixing its fine powder with a water-soluble sizing agent and spraying it onto a non-woven sheet in a vegetation zone and drying it, or by adding bentonite grains with a particle size of 1 to 4 mm to a non-woven sheet in a vegetation zone along with seeds and fertilizer. It may be added in between.

In addition, finely molded water-absorbing polymers include those made by mixing unsaturated polyester and water and then curing and molding, polyester,
Products in which polyethylene glycol or other wood-loving components having polar groups are introduced into constituent components such as polyamide,
Acrylic acid esters with parent groups such as carboxylic acid or hydroxyethyl groups introduced into the side chains, alkylene oxide polymers made water-insoluble, and acrylonitrile polymers to be crosslinked with parent groups such as carboxylic acids. The introduced material is used in the form of threads, fine particles, or powder.

The water-absorbing polymer micro-molded product is mixed with natural fibers such as hemp or chemical fibers such as rayon, polyester fiber, etc., and the water-absorbing polymer micro-molded product is entangled with the fibers by appropriate means to form seeds either fresh or after formation. The highly swellable water retention agent 6 as shown in FIG. 2 is retained by supporting the seeds on the nonwoven sheet by sowing them with fertilizer etc. on the nonwoven sheet, or by adhering them with an appropriate water-soluble binder. A vegetation zone is produced.

As mentioned above, the amount of these highly swellable water retention agents added should be such that it retains more water than the amount of water required for germination of the total amount of seeds used in the vegetation zone.

The vegetation strip is attached to a part of the inner or outer surface of the bag by sewing, gluing, stapling, etc., but the vegetation strip can be attached at any stage before, during, or after bag production. You can also do it with

Further, it is preferable to partially attach a protective film covering the attached vegetation zone to the bag body in order to protect the vegetation zone from damage.

As such a protective film, one is used that can be easily removed by corrosion, decomposition, elution, etc. during the period up to the germination of the seeds.

The present invention has the characteristics of a net-like material, so unlike conventional net-like products made of woven or braided materials, it does not stretch locally and break the bag. This has remarkable effects such as the fact that the filaments constituting the net do not elongate and significantly reduce workability, which is the case with nets.

If you use the vegetable soil bag of this invention, it will have extremely good water retention, and it will be excellent for plant germination and growth.Moreover, the plants will flourish, and the roots will bind the soil particles and suppress their dispersion.
They become intertwined with each other to form a mat-like structure, and since the bags do not corrode, they will not collapse or be washed away by rainwater even if installed in a legal framework laid on bare ground on a steep slope, so they can be used to provide vegetation and stabilization on steep slopes. can be easily done even in the summer.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the bag for vegetation sandbags of the present invention, FIG. 2 is a developed view of FIG. 1, and FIGS. 3 and 4 are enlarged schematic views of the bag components. 1... Bag body, 2, 2'... Warp, 3.
...weft, 4...vegetation zone, 5...
・Bag component piece, 6. High-curvature swelling ice pack.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A bag for vegetated sandbags consisting of a laminated net-like material and a vegetation belt in which seeds and fertilizers are supported by a non-woven sheet made of a highly swellable water retention agent and natural or chemical fibers. The warp threads and the weft threads are not woven or braided with each other, but the warp thread groups are arranged almost parallel to each other at intervals, and the weft thread groups stacked on the warp thread groups are arranged at intervals between the warp thread groups. The stacked warp groups are arranged substantially parallel to each other at intervals between the warp groups, and the warp groups and the weft groups are sandwiched between the warp groups and the weft groups. is a net-like material bonded by adhesion or fusion. 2. Vegetation according to claim 1, wherein the warp and weft are threads made of anti-deterioration material. sandbag bag