RU195078U1 - DEVICE FOR STRENGTHENING THE SOIL SURFACE - Google Patents

Abstract

The utility model relates to the field of construction, namely, it is intended to create a soil and vegetation cover during the restoration of quarries, to strengthen gentle slopes of embankments and the right of way along roads and railways, as well as to recreate or strengthen the soil layer in reserves, to restore disturbed vegetative cover in the zone permafrost, a device for covering sports fields. The device is a design of flexible strips, forming when stretching the cells to fill to grow The use of material obtained from natural fibers by pressing (for example, corrugated cardboard), which allows perforation of strips, as well as the introduction of plant seeds into strips (cell walls), is a technical result. which leads to lower labor costs and lower overall cost of the device. The conditions for the development of the plant root system are improved due to perforation, and the operation of sowing seeds is excluded.

Description

The utility model relates to the field of construction, namely, it is intended to strengthen the surface of slopes, to strengthen the surface of soils during reclamation of quarries, to improve landfills, to recreate or strengthen the existing soil layer in reserves, reserves, national parks, and to restore disturbed shrubs in the permafrost zone, devices coverings of playgrounds or sports grounds.

Known sod tape, [ODM 218.2.078-2016. Guidelines for choosing the construction of reinforcing slopes of the subgrade of public roads], cut and laid on a reinforced soil surface. Rooted sod strengthens the surface, forming a natural vegetation cover. The advantage of turf tapes is that it is a natural material that can be used in national parks, reserves, wildlife sanctuaries, as well as in sports and playgrounds. Slopes fortified with turf have an attractive appearance.

The disadvantage is a significant amount of manual labor. In addition, when removing sod, the soil surface is exposed, which may be subject to erosion before vegetation forms on it.

Closest to the claimed invention of the same purpose for the maximum number of similar features is a device for strengthening the soil surface, made of flexible strips mounted on the ribs and interconnected by linear seams arranged in a checkerboard pattern, and the strips are made of non-woven geotextiles made from natural fibers or mixtures of natural and synthetic fibers, and reinforced with sizing and rectilinear or zigzag stitched seams [Patent for the invention ⁽¹⁹⁾ RU ^{(11 )} 2 180 030 ⁽¹³⁾ C1 dated March 30, 2001].

During installation, the device is installed on a strengthened soil surface, stretched, while cells form between the flexible strips.

The cells can be covered with vegetable soil, followed by sowing seeds. After several years, the natural fibers of the cell walls decompose, by this time the plants take root. A natural land cover with a flat surface is formed, having an attractive appearance.

The device has the following disadvantages.

1. Sewing fabric with stitched seams and sizing non-woven geotextiles significantly increase the cost of the product due to significant additional labor costs, and the cost of sizing. Sizing is a rather time-consuming operation. If geotextile strips are not strengthened, the bands are wrinkled and it is difficult to fill the cells with soil.

2. The effectiveness of the sizing is doubtful. Many dressings (starch, salt, etc.) dissolve upon first wetting, the material loses its stiffness, crumpled and ceases to hold the soil with seeds, i.e. loses its function.

3. Until the cell walls decompose, the roots cannot penetrate from one cell to another, which slows down the formation of turf. Sod cover is effective for strengthening the soil surface when it forms a developed root system on a large area, the roots of plants intertwine and hold the soil. The perforation of the walls, providing the possibility of free growth of the root system, is not provided, possibly due to the fact that the perforation process can damage the surface of the strip strengthened by sizing and stitched seams.

The purpose of this technical solution is to reduce the cost of the device and increase its efficiency.

This goal is achieved in that the flexible strips mounted on the ribs and interconnected by linear stitches arranged in a checkerboard pattern are made of material obtained from natural fibers by pressing and are perforated. The stripes may have an additional layer with plant seeds.

The technical result is achieved by the fact that the material obtained from natural fibers by pressing, for example, corrugated packaging cardboard, reduces the cost of production, since flashing and finishing operations are excluded. Also, the proposed material allows the strips (cell walls) to perform other functions: placing seeds, protecting seeds from birds during germination, creating a nutrient medium in the process of strip decomposition. There is a possibility of developing the root system of plants due to perforation.

The essence of the proposed technical solution is illustrated by drawings, which depict:

in FIG. 1 - the claimed device;

in FIG. 2 - the claimed device 1 year after its installation;

in FIG. 3 - the claimed device 3 years after its installation.

The claimed device contains flexible strips (cell walls) 1 of material obtained from natural fibers by pressing, for example, cardboard (packaging corrugated), with perforations 2, stitched together in a checkerboard pattern with seams 3. The strips can have a layer with plant seeds.

The claimed device operates as follows. A leveling soil layer 5 is arranged on the exposed mineral surface 4, a honeycomb structure 6 is installed on the leveling layer, consisting of strips sealed together by seams 1. The cells are filled with vegetable soil 7. If the strips do not have a layer with seeds, seeds are sown (as a rule, sowing). Within 1-3 years after the installation of the device, the root system of 8 plants develops, by the same time the walls of the cellular structure 6 decompose, a natural soil and plant cover with a flat surface is formed, having an attractive appearance.

The presence of strips with seeds eliminates the sowing of herbs. With a small cell (for example, 15 × 15 cm), rapidly growing grasses (for example, a shoot-bent field) during one summer season in the climate of central Russia can fill the soil surface bounded by the cell walls.

The device can be used to create a natural soil and vegetation cover on gentle slopes and slopes of embankments, if condition (1) is met, then the cellular structure with soil is kept on the slope due to the friction force:

where α is the angle of repose;

ϕ is the angle of internal friction of the cell filler.

Usually, condition (1) is observed when the slope slope is 1: 1.6 and more.

Efficiency consists in reducing the cost of the claimed device while improving the result: a material obtained from natural fibers by pressing, for example, corrugated packaging cardboard is a cheap material, the production of which is fully mechanized, indestructible under the load created by the poured soil. The cost of strips of packaging cardboard is lower than the cost of finished and reinforced stitched seams of geotextile strips. Perforation in strips (cell walls) allows the root system of plants to develop freely. A layer with seeds (a glued sheet of paper with seeds outside the strip or placed inside the strip during the formation of cardboard) will eliminate the grass sowing operation.

Claims (2)

1. A device for strengthening the surface of the soil, containing flexible strips mounted on the ribs and interconnected by linear stitches arranged in a checkerboard pattern, characterized in that the flexible strips are made of cardboard that cannot be crushed under the load created by the bulk soil and are perforated. 2. A device for strengthening the soil according to claim 1, characterized in that the flexible strips contain a layer with plant seeds, introduced after completion of the formation of strips.

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