RU2655312C1 - Device for strengthening earth heavy reliefs - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention relates to the field of transport and hydraulic engineering construction and can be used to protect against wind waves and to prevent erosion of shores of lakes, rivers, reservoirs, slopes of soil dams, canals, railway and road embankments of the roadbed. Device for strengthening the slopes of the roadbed includes a flexible, non-removable formwork, consisting of sewn together upper and lower water-permeable sheets of geotextile material and forming sequentially located cavities – cushions, filled with concrete and having internal vertical connections, the underlying layer of the filter cloth and filter elements. Pillows are made hydraulically isolated from each other, are equipped with individual nozzles with a non-return valve for supplying concrete and discharges from water-permeable webs of geotextile material, are interconnected by flexible bridges, made with the help of editions of water-permeable sheets of geotextile material. Flexible bridges are located along the perimeter of the pillows and serve as filter elements.

EFFECT: technical result consists in ensuring the production of inexpensive in the manufacture of and easy to install flexible slope cover, which has sufficient reliability in operation due to its high filtering ability, ensuring a good adaptation to the change in the relief of the surface of slopes and the bottom of the watercourse during washouts while using and preventing further erosion processes.

1 cl, 7 dwg

Description

The invention relates to the field of transport and hydraulic engineering and can be used to protect against wind waves and to prevent erosion of the shores of lakes, rivers, reservoirs, slopes of soil dams, canals, railway and road embankments of the subgrade.

A device for reinforcing slopes of a subgrade (covering slopes) is known, including flexible fixed formwork consisting of upper and lower water-permeable stitches sewn together and forming successively interconnected cavities — pillows separated by hard lintels and filled with concrete. The cavity of the pillows is equipped with flexible vertical connections between the upper and lower webs, as well as internal reinforcing elements that extend along the entire length of the slope cover and provide the rigidity of the jumpers located between the pillows. At the corners of concrete pillows are filter elements, lintels are waterproof, and pillows are based on damping layers and underlying filter cloths (1).

A disadvantage of the known device is its extreme high structural and technological complexity due to the use of vertical and inclined connection systems and internal reinforcing elements in the form of flexible ropes running inside concrete pads along the entire length of the slope cover. This leads to a serious increase in the cost of covering slopes due to the need for labor-intensive technological operations to ensure the rigidity of the coating. The disadvantage of this device can be attributed to an extremely insufficient filtering ability, which is carried out only on small areas in the corners of concrete pillows, and the remaining sections around the perimeter of the pillows are rigid waterproof lintels. In addition, the high rigidity of the coating does not allow it to flexibly adapt to changes in the surface topography of slopes in case of erosion and to prevent its subsequent destruction.

The present invention is to obtain inexpensive to manufacture and easily mounted flexible coating of slopes, with sufficient reliability in operation by ensuring its high filtering ability.

The problem is solved due to the fact that in the device for strengthening the slopes of the subgrade, including flexible fixed formwork, consisting of upper and lower waterproof permeable geotextile materials sewn together and forming sequentially located cavities - pillows filled with concrete and having internal vertical ties laying layers of a filtering cloth and filtering elements, pillows are made hydraulically isolated from each other, equipped with individual nozzles with reverse with a concrete supply valve and outlets of permeable webs of geotextile material, they are interconnected by flexible bridges made using outlets of permeable webs of geotextile material, and the flexible webs are located around the perimeter of the pillows and act as filter elements.

The invention is illustrated in the drawing, where:

- FIG. 1 shows a fragment of a device for strengthening slopes of a subgrade - covering slopes, a top view;

- FIG. 2 - covering the slopes in FIG. 1, section A - A;

- FIG. 3 - shows a cross section of a pillow with internal vertical ties;

- FIG. 4 - pillow in FIG. 3, top view;

- FIG. 5 - shows the combination of pillows with each other using flexible jumpers;

- FIG. 6 - operating position of the pillows after combining with each other with flexible jumpers;

- FIG. 7 - placement of the coating on the slope of a hydraulic structure.

The device for strengthening the slopes of the subgrade, hereinafter referred to as covering the slopes, is a flexible fixed formwork 1 consisting of upper 2 and lower 3 water-permeable geotextile materials sewn together and forming successively arranged cavities - pillows 4. Pillows 4 are hydraulically isolated from each other and equipped individual nozzles with a check valve 5 for supplying concrete 4 to the inside of the pillow 4. The inner cavity of the pillows 4 is provided with vertical connections 7.

Flexible fixed formwork 1, consisting of pillows 4, rests on the underlying layer of filter cloth 8 laid over the entire area of the slope cover, which can be made of non-woven geotextile material of the Dornit type.

Pillows 4 are combined using flexible jumpers 9 as follows. Water-permeable sheets 2,3 of geotextile material of each pillow 4 have outlets 10 around the perimeter. The pillows 4 are stacked on top of each other and the outlets 10 are joined together by means of seams 11. Thus, flexible fixed formwork 1 of the entire slope cover is formed. Flexible jumpers 9 made of a permeable coating 2, 3 and located around the perimeter of the pillows 4, act as a filter element.

Installation of the slope cover is as follows. On the slope 12, the underlying layer of the filtering cloth 8 is preliminarily laid and a prefabricated flexible fixed formwork 1 is laid on it. Next, individually pillow 4 is successively filled with concrete 6 through the nozzles with a check valve 5. As a result, concrete blocks 13 are formed in the pillows 4. Form concrete blocks 13 is provided by a given length of vertical ties 7.

Thus, the proposed design will provide inexpensive to manufacture and easily mounted flexible coating of slopes, which has sufficient reliability in operation by providing its high filtering ability. Moreover, flexible and durable jumpers 9 provide good adaptation to changes in the surface relief of slopes and the bottom of the watercourse during erosion during operation and prevent further erosion processes.

The source of information

1. Patent of the Russian Federation No. 2592104, "Covering slopes", ЕВВ 3/12, E02D 17/20, priority from 05/18/2015.

Claims (1)

The device for strengthening the slopes of the subgrade, including flexible fixed formwork, consisting of upper and lower permeable fabrics of geotextile material sewn together and forming successively located cavities - pillows filled with concrete and having internal vertical ties, the underlying layer of the filter cloth and filter elements, characterized in that the pillows are made hydraulically isolated from each other, equipped with individual nozzles with a check valve for concrete supply releases from water-permeable geotextile webs are united by flexible webs made using releases permeable geotextile webs, wherein the flexible webs are arranged on the perimeter of the cushion and serve as filtering elements.

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