RU2547517C1 - Method to install wire anchors - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention relates to nature conservation arrangement of mountain and foothills landscapes and may be used as anchors for anti-erosion and anti-landslide structures, and also in case of emergencies. The method to install wire anchors is characterised by the fact that a device is screwed into soil for the required depth, and the device comprises doubled hollow pipes, the outer of which comprises evenly arranged ledges of permanent rectangular cross section, rigidly fixed along the side cylindrical surface along the helical line with permanent pitch. After the device reaches the required depth, the inner pipe together with cohesive soil is withdrawn from the outer pipe to form hollow space, and soil is removed from it. Then a wire anchor is inserted into the produced hollow space of the outer pipe, with a cylindrical head, and backfilling is done with soil for height h with subsequent putting of cylindrical attachments onto the anchor wire, and the outer pipe is screwed out with the help of a handle as the anchor is grown.

EFFECT: increased efficiency and reliability of installation of wire anchors on slopes and ravines.

4 cl, 6 dwg

Description

The invention relates to the environmental arrangement of mountain and foothill landscapes and can be used as anchors for anti-erosion and anti-landslide structures, as well as in emergency situations.

The known method for installing anchors [1] is characterized in that the device is screwed into the soil or soil to the required depth. The device consists of double hollow pipes. The outer pipe has uniformly spaced protrusions of constant rectangular cross section, rigidly fixed along a cylindrical side surface along a helical line with a constant pitch. After the device reaches the required depth, the inner pipe together with the cohesive soil is removed from the outer pipe with the formation of a hollow space. Anchors are installed in the hollow space and filled up. The disadvantages of this technical solution are:

- a device for installing anchors requires a lot of time, quite expensive and not reliable enough;

- low efficiency, if necessary, anchor to a great depth.

The closest technical solution is a wire anchor with a conical tip [2], which includes overlapping braided mesh by unwinding the rolls with the long side across the direction of movement of the slope and securing them to the slope with anchors with tips, characterized in that the wire anchor has a conical tip with a guide rod receiving in the working position, the direction coincides with the wire, which is attached to the anti-landslide structure. The disadvantages of this technical solution are:

- A device for installing anchors requires a lot of time;

- the proposed device for installing anchors is quite expensive and not reliable enough;

- low efficiency, if necessary, anchor to a great depth.

The aim of the invention is to increase the efficiency and reliability of the installation of wire anchors on slopes and ravines.

This goal is achieved by the fact that a special device for wire anchors is installed on the soil surface (Fig. 1). The device consists of double hollow pipes, the outer pipe has uniformly spaced protrusions of constant rectangular cross-section, rigidly fixed along the cylindrical side surface along a helical line with a constant pitch. In the upper part of the pipes there are holes in which the handle is inserted (Fig. 1, 2). Rotational forces are applied to the handle, which drives the device for building vertical drains and deepening it into a cohesive soil to the required depth. Efforts can be applied in pairs from different sides of the handle. After that, the inner pipe together with the cohesive soil is removed from the outer pipe and a hollow space is formed (Figs. 3, 4). Next, soil is removed from the inner pipe. A wire anchor with a cylindrical head is inserted into the formed hollow space of the outer pipe and backfill with soil to a height h is made, followed by putting cylindrical nozzles on the wire anchor. The distance between the cylindrical nozzles depends on the type of soil and is equal to h = (3 ÷ 10) d, where d is the diameter of the cylindrical nozzle. As the material of the cylindrical nozzle, concrete or composite material can be used. The soil between the cylindrical nozzles is rammed as it falls asleep. The outer pipe, as the anchor grows, is twisted using the handle.

The proposed method can be installed wire anchors to a depth of 7 ÷ 10 m (Fig.6).

The length of the handle depends on the amount of force required to rotate and deepen the special device.

Figure 1 shows a device for installing anchors, General view; figure 2 is a section aa in figure 1; figure 3 shows a device for installing anchors, in section; figure 4 - shows a device for installing anchors at the time of extraction of the inner pipe with soil, in section; figure 5 - shows a device for installing anchors at the time of lowering the wire anchor and backfill, in the context; figure 6 - shows the installed wire anchor in the context.

A device for installing anchors is installed on the surface of the earth 1. The device consists of double hollow pipes, the outer pipe 2 and the inner pipe 3. The outer pipe 2 has tabs 4 that are rigidly fixed along a cylindrical surface along a helical line, and at the top of the outer pipe 2 and the inner pipe 3 there are holes 5 into which the handle 6 is inserted. After deepening the device to the required depth, the inner pipe 3 is removed with the soil 7 and a hollow space is formed 8. A wire anchke is lowered into the hollow space 8 p 9 with a cylindrical tip 10 attached to the wire 11. The wire anchor 9 is filled with backfill 12 and, as it falls asleep, the cylindrical nozzles 13 are put on.

The installation method of wire anchors is as follows. On the surface of the earth 1 is installed a special device for wire anchors (figure 1). The device consists of double hollow pipes, the outer pipe 2 and the inner pipe 3. The outer pipe 2 has evenly spaced protrusions 4 of constant rectangular cross-section, rigidly fixed along the cylindrical surface along a helical line with a constant pitch. In the upper part of the pipes there are openings 5 into which the handle 6 is inserted (Figs. 1, 2). Rotational forces are applied to the handle 6, which leads to the rotation of the device for installing wire anchors and deepening it into a cohesive soil to the required depth. Efforts can be applied in pairs from different sides of the handle 6. Then the inner pipe 3 together with the cohesive soil 7 is removed from the outer pipe 2 and a hollow space 8 is formed (Figs. 3, 4). Then, soil 7 is removed from the inner pipe 3. A wire anchor 9 with a cylindrical head 10 is inserted into the formed hollow space 8 of the outer pipe 2, and backfill with soil 12 to a height h is carried out, followed by putting cylindrical nozzles 13 on the wire 11 of the wire anchor 9. The distance between cylindrical nozzles 13 depends on the type of soil and is equal to h = (3 ÷ 10) d, where d is the diameter of the cylindrical nozzle 13. So on loams and clays this distance is greater than that of sand and sandy loam. As the material of the cylindrical nozzle 13, concrete or composite material can be used. The soil 12 between the cylindrical nozzles 13 as falling asleep is rammed (figure 5). The outer pipe 3 as the anchor 9 grows is twisted using the handle 6 (Fig.6).

The proposed method of installing wire anchors can significantly increase the installation speed and reduce the cost of work to a minimum. The proposed technical solution allows the production of work in hard to reach places on slopes and in ravines.

Information sources

1. Patent of the Russian Federation No. 2492605, IPC A01B 1/00, A01B 5/04. The method of digging holes in cohesive soils / Lamerdonov Z.G .; application 02/17/2012; publ. 09/20/2013 (analog).

2. Patent of the Russian Federation No. 2486317, IPC E02D 17/20, A01B 5/04. Wire anchor with a conical tip / Enaldieva M.A., Lamerdonov Z.G .; application 02/17/2012; publ. 09/20/2013 (prototype).

Claims (4)

1. A method of installing wire anchors, characterized in that a device consisting of double hollow pipes is twisted into the soil to the required depth, the outer of which has uniformly spaced protrusions of a constant rectangular section, rigidly fixed along a cylindrical surface along a helical line with a constant pitch, after when the device reaches the required depth, the inner pipe together with the cohesive soil is removed from the outer pipe with the formation of a hollow space and the soil is removed from it, then into the Noe hollow space of the outer tube is inserted into a cylindrical wire anchor with a head part and is made backfill soil to a height h, followed by putting on the wire anchor cylindrical nozzle and the outer pipe with the increasing twisting of the anchor with the handle. 2. The method according to claim 1, characterized in that concrete or composite material can be used as the material of the cylindrical nozzle. 3. The method according to claim 1, characterized in that the distance between the cylindrical nozzles depends on the type of soil and is equal to h = (3 ÷ 10) d, where d is the diameter of the cylindrical nozzle. 4. The method according to claim 1, characterized in that the soil between the cylindrical nozzles is rammed as it falls asleep.

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