JPS58176317A - Soil board - Google Patents

Abstract

PURPOSE:To obtain soil boards to be used as prefabricated greens-planting boards or in earthing work by using mechanical forces by a method in which soil is packed in spaces of a bulky netted sheet having large numbers of independent projections to form soil boards. CONSTITUTION:Soil is packed in the spaces 5 of a bulky thermoplastic netted sheet 2 having large numbers of independent projections 3 with alternately formed concavities on its surface, back, or both sides in order to form a soil board. The soil boards are lifted up by means of a machine, e.g., wrecker truck, etc., by holding both ends in the longitudinal direction of the board and then laid on the cut slope of the ground. The soil boards are then fixed by anchor pins, and soil is packed in the apertures between the joints of the boards to complete the construction work. By this, since the packed soil is fixed by the bulky netted sheet, the falling and run-off of soil from the slope can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a soil cover 11 that serves both as a soil cover plate and a vegetation plate used for forming a cover layer on a slope.

If artificially created slopes of soil or rocks are left as they are, the bond between the soil will weaken due to rain and frost heaving.
Slip or shear occurs. To prevent slope erosion and weathering, it is necessary to cover and protect one slope.

Traditionally, slopes such as cut rock were treated with mortar spraying, but this was not desirable from an aesthetic point of view. Normally, slope soil is not suitable for grass growth.In such cases, vegetation is added to a mixture of soil, fertilizer, compost, water retaining material, and fibers such as cut straw. A starter soil is made by mixing the soil, and an adhesive such as cement, synthetic glue such as polyvinyl alcohol, or asphalt emulsion, and water are added to make it into a slurry. In recent years, a method of revegetation, in which soil is sprayed to a thickness of 5 to 10 centimeters and seeds are sown at the same time, has been widely used in recent years.

However, the soil sprayed in this way often washes away or slides off due to rain. In particular, many accidents occurred when spraying a thick layer on steeply sloped rock, and it was necessary to take measures such as increasing the amount of adhesive mixed in to stabilize the soil. However, excessive use of adhesives has the problem of hindering the germination of seeds and harming plants.

On the other hand, spraying is hard work that is performed in extremely poor working conditions and requires improvement.

Furthermore, since materials must be measured and mixed in a crowded and narrow work site, lack of accuracy can lead to various failures.

The purpose of the present invention is to solve the above-mentioned problem, and it is a prefabricated soil plate that can be used as a prefabricated soil plate or a vegetation plate that can efficiently add soil or cover soil and vegetation using mechanical power. Provide the foundation. That is, the first invention of the present application is formed by filling the voids of a bulky net-like sheet, which has a large number of independent protrusions formed by depressions on either the front and back sides or alternately on both the front and back sides, with soil to form a plate shape. It is a customer base.

Hereinafter, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a three-dimensional view of an example of a customer platform 1 of the present invention. The size of the customer base 1 is 3 to 10 mm on the long side.

The short side is 1 to 5 mm, and the height is 3 to 20 mm.

FIG. 2, 4, @, 0 is a partial cross-sectional view of a bulky mesh sheet 20 used in the subsoil 1 of the present invention.

4 is a recess on the front surface, (B) is a recess on the back threshold, and 0 is a large number of independent protrusions 5 formed by recesses alternately on both the front and back sides.
v has. The height of the independent protrusion 3 is approximately equal to the height of the customer soil 1, so it is 3 to 205I, but in the case of (C), the independent protrusion 3 is formed with depressions on both the front and back sides, so the height is 3 to 205I, respectively. The height of the independent protrusion 3 may be half the height of the base 1.

FIG. 3 is a three-dimensional view of the mesh sheet shown in FIG. 20, which has many meshes 4 on the entire surface. The voids 5 and meshes 4 formed between the independent protrusions 3 are filled with soil.

The material for the bulky reticulated sheet 2 is a hard thermoformable plastic, such as hard polyvinyl chloride, polystyrene, polyethylene, polypropylene, polycarbonate, or nylon.

Polyester, polyvinylidene chloride, etc. are used.

Specifically, plastic nets made of these materials,
A bulky net-like sheet (2v) is obtained by aging a plastic sheet, a plastic lath sheet, or a rigid nonwoven fabric with many holes to form a large number of independent protrusions 3.

For example, a plastic net with a thickness of (15%) is made into a bulky net-like sheet 2 with a thickness of 20% by thermoforming.

The soil to be filled should be suitable for vegetation.

For the growth of grass, it is said that soil with a sand content of 5 to 50 degrees, a silt content of 35 degrees or more, and a clay content of 15 degrees or less is best, so it is best to fill it with such soil after adjusting it as appropriate.

Replacement soil can be formed by installing a replacement soil platform 1 filled with soil and formed into a disk shape on a slope. However, if the soil is simply filled with soil, there is a risk that the soil will fall out during transportation of the customer soil.

As a countermeasure against this problem, it is best to mix adhesive into the soil to solidify the soil particles. Adhesives mixed for this purpose include cements, asphalt emulsions, urethane water-soluble resins, vinyl acetate emulsion resins, and acrylic emulsion resins. The amount of adhesive varies depending on the type of adhesive, but for example, in the case of ordinary cement, 100% of soil (
It is sufficient that it is 1 (weight) or less for K (weight).

Seed may be sown on the soil created by installing 1v of soil on the slope by spraying, but if you form a mixed layer of seed fertilizer on the surface of the soil in advance, it will be easier to sow seeds later. This is convenient because there is no need for The seed fertilizer mixed layer uses seeds and E-feed as essential materials, and various mixed materials are added thereto. As the mixed material, fibers, soil, bentonite, peat moss, vermiculite, super absorbent resins, and the above adhesives are used as appropriate.

Furthermore, it is advisable to coat the seed fertilizer mixture layer with an anti-erosion agent against rain. The erosion inhibitor serves to form a film on the surface of the seed fertilizer mixture layer or to solidify the surface of the seed fertilizer mixture layer. The above-mentioned adhesive is used as the erosion inhibitor, which is diluted with water and sprayed on the seed fertilizer mixed layer. Protecting the seed fertilizer mixture from erosion by rain can also be achieved by other means. In other words, it is best to cover the single fertilizer mixed layer with a relatively fine-mesh net.

This restraining net is made of, for example, a 300-denier monofilament made of 5:1 ethylene, has a mesh size of 10% square, and is entirely entangled with cotton-like material. The seeds for the mixed layer of seed fertilizer can be selected depending on the location conditions of the slope and the time of preparation. For example, Japanese grass, Bermuda grass, Kentucky bluegrass, weaving whelkgrass, white clover, Kentucky grass 5.
1. Fuesque is a typical type of slope leather. Furthermore, it is convenient to use a granular or perennial compound fertilizer containing nitrogen, phosphoric acid, and potassium. The amount of fertilizer is 1
Approximately 50 grams per square meter is preferred.

FIG. 4 is a partial cross-sectional view of a soil base 8 used as a vegetation base t/9IL, in which a seed fertilizer mixed layer 6 and an erosion prevention agent coating layer 7 are formed on the surface layer of the soil base 1 described above.

9 is empty! This is soil filled in llm5.

On the other hand, the seed fertilizer mixed layer 6 is not formed, and the seeds, fertilizer, and various mixed materials used for the seed fertilizer layer are mixed in advance with the soil, and this is filled into the empty WaS of the mesh sheet 2 and the mesh □ mesh 4. It can also be made into a board shape and used as a soil board that also serves as a vegetation board. However, if the layer becomes thick, the efficiency of the fertilizer decreases, so it is often better to provide a separate seed fertilizer mixed layer 6 as shown in #4.

On the other hand, if the soil is not sufficiently fixed on the net-like sheet (2) and there is a risk that it may fall off during transportation, a water-permeable base fabric may be used on the back side of the above-mentioned soil layer or soil layer that also serves as a vegetation layer. As the base fabric for such lining, relatively coarse knitted or woven fabrics made of synthetic fibers such as nylon, polyester, polypropylene, polyethylene, polyvinyl chloride, and polyvinylidene chloride can be used. Good.

In manufacturing a soil base that also serves as a soil base or a vegetation base, this base fabric is joined in advance to a bulky sheet (2) by an appropriate means, and adjusted soil is poured into this to form the base.

To construct the sub-soil of the present invention, the longitudinal ends of the sub-soil are clamped, and heavy equipment such as a tow truck, crane, or power shovel is used to lift the sub-soil, move it, and lay it. It is a good idea to smooth out areas around rock protrusions and large depressions with soil. When laying the boards one after another, anchors are placed at the tops of the boards and at appropriate points along the way to secure them in place, and soil is poured into the gaps between the boards to complete the construction. The anchor bin may be cast in advance so as to project KI on the slope surface at the construction stage tIi of the customer soil.

Example 1 A large number of independent protrusions were formed by thermoforming a medium-low pressure polyethylene plastic net (Takiron Trical Net N-24) on both sides to form a large number of independent protrusions.
%, length 3,000%.

A bulky reticulated sheet with a thickness of 305% was obtained. A filter cloth made of polyethylene or polyester fibers with a mesh size of approximately α2% was bonded to the mesh sheet at the tips of the independent protrusions using an epoxy adhesive.

This is medium 1,240%, length s, o o o ~, height 5
It was installed on a 0% prefabricated wooden floor.

Vinyl acetate emulsion (IM fat content 50%) 500ac
1 was diluted with 10AK of water, and this was mixed into ± (planting soil) α1- and stirred. This was poured into the above prefabricated wooden floor to form a board. When this was taken out from the floor above, a large clay slab was obtained.

Example 2 Kentara Key 61 Huesque 57 grams.

White clover - 7 grams.

Weaving Love Glass 4 grams.

of each seed, 2 kg of fiber and 2 kg of advanced chemical fertilizer (14-17-15) were mixed.

To this was mixed 4 grams of a super absorbent resin (manufactured by Tetsuto Kagaku Co., Ltd., trade name: Aqua Keep) dispersed in 4AK water.

The above mixture was uniformly spread on the surface layer of the soil obtained in Example 1 to form a seed fertilizer mixed layer.

Next, add vinyl acetate resin latex to a resin content of 2.51 II.
7) Diluted with water so that 7L of yams were evenly spread on the above seed fertilizer mixture layer.- After day and night, a thin film of vinyl acetate resin was formed on the surface of the seed fertilizer mixture layer, and it was applied to the surface layer of the soil. A soil bed that also served as a vegetation bed was obtained, having a seed fertilizer mixed layer and a coating layer of an anti-erosion agent.

The obtained soil plate, which also served as a vegetation plate, was laid on an approximately 45-degree slope. The seeds germinated in a week, grew steadily, and turned green in a month.

Since the board of the present invention has the above-mentioned configuration, it can be used for forming a thick layer of soil on a slope.Since the board is quality-controlled and uniform, there are fewer accidents and construction can be carried out efficiently. can. Moreover, in the case of spraying, it may be difficult to apply soil with a value of Vc5aIM or higher due to soil runoff and slippage, but if the soil of the present invention is used as a soil plate or a soil plate that also serves as a vegetation plate, it is difficult to apply soil with a value of 10 to 155I. It is also easy to add soil to a thickness of .

This is because the bulky net-like sheet restrains the filled soil, preventing the soil from sliding down the slope or flowing out.

Furthermore, even after construction, this bulky mesh sheet prevents the soil from sliding or flowing out due to rain, wind, etc. Also, the mesh sheet provides appropriate flexibility to the board. Therefore, it can adapt to uneven surfaces such as cut slopes.Water penetrates into the lower part through the mesh, and the roots of plants can also reach the surface through the mesh.

In addition, it is safer because inefficient work at the site is reduced, and construction costs can be reduced.

[Brief explanation of the drawing]

Figure 1 is a partially cut-away three-dimensional view of an example of the base soil of the present invention, and Figure 2 (5), @, (C) is a partial cross section of a bulky mesh sheet used for the base soil. Figure 3 is the second
Fig. 4 is a three-dimensional view of the reticulated sheet in Figure (q), and Fig. 4 is a partial cross-sectional view of an example of a soil board that also serves as a vegetation board, which is another invention of the present application.・・・・・・Reticular sheet, 3
...Independent protrusion, 4...Mesh, 5...
...Void area, 6... Seed fertilizer mixed layer, 7...
...Erosion prevention agent coating, 8...Custom soil plate that also serves as a vegetation plate, 9...Soil. Figure 1 Figure 2 (A) Figure 3

Claims (4)

[Claims] (1) Relief soil characterized by being formed into a board shape by filling the voids of a bulky net-like sheet with a large number of independent protrusions formed by depressions on either the front or back side or alternately on both the front and back sides. Board. (2) The soil base according to claim 1, wherein the soil is cemented with an adhesive. (3) Fill the voids of a bulky net-like sheet with a large number of independent protrusions formed by depressions on either the front or back side or alternately on both sides to form a board shape, and then use this as a water-permeable base fabric. A customer base with a unique feature that is lined with. (4) Seed seeds in the surface layer 11 of the customer soil plate, which is formed into a disk by filling the voids of a bulky net-like sheet with a large number of independent protrusions formed by depressions on either the front or back side or alternately on both the front and back sides. Forming a fertilizer mixed layer 7 (5) Fill the voids of a bulky net-like sheet with a large number of independent protrusions formed by depressions on either the front and back sides or alternately on both sides with soil mixed with fertilizer and seeds to form a plate-like layer. A soil board that doubles as a vegetation board and hangs.