Device for strengthening of the banks or beds of

 

(57) Abstract:

The invention relates to hydraulic construction and can be used as shore protection structures in erodible channels of rivers, canals and other structures. The device consists of a prismatic gabions, at the base of which is an isosceles triangle, the base of its laid on the bottom or shore. Horse the prismatic face of the gabion is oriented upward and perpendicular to the direction of flow. At the base of the prismatic gabions are connected by wire. Formed by the space between adjacent gabions in the horse part is filled with fertile soil with seeds hygrophilous vegetation, and the top prisypaetsja riprap placed on the principle of the inverse filter. Prismatic gabions are mounted from the roll of mesh. To ensure that the system was fixed and rigid, the ratio of the equal sides of the triangle to the base should be expressed by the inequality a b, where a is the length of the base; b is the length of the equal sides of the triangle. Net roll, rolled on the developed methodology and filled with stone, connects the top of the wire that forms the apex of the prism and the reference point is the train protection grid from abrasion during operation, while durability of these structures in 1,5-2 times higher than previously known similar technical solutions. 2 C.p. f-crystals, 5 Il.

The invention relates to hydraulic construction and can be used as shore protection structures in erodible channels of rivers, canals and other structures.

A device for strengthening of the banks or channels [1], containing the gabions filled with stone, laid on the bottom of the channel or banks of the river or channel. The disadvantage of this technical solution is that:

- mounting in direct contact with the fluid flow and transported sediments and therefore may be subject to rapid wear and destruction in a short time;

- efficacy of mounting is greatly reduced when in the river or channel high speeds and costs.

- the environment is not favorable technical solution;

- mount over time may break down due to mechanical sufoziya, removal of fine particles Foundation through the pores of gabions;

- rigidity of gabion insufficient, and gabion may be subjected to severe abrasion by sediment in the process of exploitation is etenia - improving the efficiency and reliability of coastal protection riverbeds and channels from erosion and durability lifetime of shore protection structures.

This objective is achieved in that the device for strengthening the banks or beds consists of a gabion is made in the form of triangular prisms placed one of the faces on the bottom. The line of intersection of the other two faces perpendicular to the direction of flow, and the adjacent prisms are connected faces each other with the formation of a continuous coating.

At the base of the prismatic gabions are connected by wire so that the formed solid mesh floor, directly adjacent to the bottom and banks of the channel of a river or channel. Gabions are mounted from the roll of mesh so that the base is formed an isosceles triangle. To ensure that the system was immutable and rigid attitude of equal sides to the base should be expressed by the inequality ab, where a is the length of the base; b is the length of the equal sides of the triangle. Net roll, rolled on the developed methodology and filled with stone, connects the top of the wire that forms the apex of the prism and is oriented upwards.

The gabion, the implementation of Rawley perpendicular to the direction of flow. Thus, the gabions are placed as artificial roughness, which will contribute to the silting during operation formed by the space between adjacent gabions.

Formed between the faces of adjacent prisms space is filled with fertile soil with seeds hygrophilous vegetation, and the top prisypaetsja riprap placed on the principle of the inverse filter.

Growing root system hygrophilous plants reinforces the soil, filling the space between adjacent gabions, fastening it with gabions and also relates prismatic spaces between them.

Rock placement is laid on the principle of inverse filter, which prevents the operation of securing the removal of fertile soil with the seeds of the space formed between adjacent gabions.

In Fig.1 shows a longitudinal section of the riverbed or channel with a device for strengthening the banks or beds of Fig.2 - section a-a in Fig.1, a top view; Fig.3 - detailed net roll; Fig.4 - gabion, axonometric view of Fig.5 - node In Fig.1.

The channel cross-section 1 consists of the shore 2 and bottom 3 parts, on which uloge uedineny wire 7, and at the top of the wire 8, forming a hinged connection type. Formed by the space between the gabion 4, which also has a prismatic shape, initially populated fertile soil 9 seeds hygrophilous vegetation, and the top prisypaetsja riprap 10. Sprouting vegetation 11 of its root system 12 reinforces and strengthens gabion mount.

Device for strengthening of the banks or beds is assembled and operates as follows.

Net roll 5 is placed on the bottom 3 and the shore 2 riverbed or channel 1, transversely to the direction of flow of the stream. On a roll of mesh 5 are stacked stones 6 in the shape of a triangular prism. In order to mount the gabion 4 was rigid and immutable structure, the ratio of the equal sides to the base should be expressed by the inequality ab, where a is the length of the base; b is the length of the equal sides of the triangle. Rolled in gabion 4 5 mesh filled with stones 6, is connected by a wire 8. So sequentially mounted all gabion 4, which are interconnected at the base of the wire 7, grassroots faces. Formed by the space between the gabion 4 has a prismatic shape, which is partially filled with fertile soil 9 seed vlegal the part is fixed between the adjacent prismatic gabion 4 and rock placement 10. Rock placement 10 is laid on the principle of inverse filter so that the particle sizes, stacked in layers, rise to the top and this prevents the possible removal of particles of fertile soil 9 seed moisture-loving plants 11. So rock placement 10 forms a natural pillow, additionally protecting the grid from 5 intensive abrasion during operation gabion fastening.

The proposed solution has a number of advantages over other previously known, namely the flexibility of the design for which is not dangerous possible deformations of the banks and the bottom of the riverbed during operation; not dangerous climatic conditions, in which there are alternating freezing and thawing. Design flexibility is a great advantage of this construction as it is in the water and to avoid possible deformation of the bottom and the base is impossible, but it will cause a distortion of the structure, which is not dangerous for this type of mounting. Gabion destroyed easily installed in the operating process.

The proposed solution is cheaper than known similar due to save concrete and reliable protection from abrasion mesh in processi solutions.

Sources of information

1. Altunin S. T. Regulation of riverbeds. M: Symptoms, 1956, S. 62-64.

1. Device for strengthening of the banks or beds containing gabions filled with stone, laid on the bottom of the channel or banks of the river or channel, wherein the gabion is made in the form of triangular prisms placed one of the faces on the bottom, and the line of intersection of the other two faces perpendicular to the direction of flow adjacent prisms are connected faces each other with the formation of a continuous coating, and a space formed between the faces of adjacent prisms, filled with fertile soil with seeds hygrophilous vegetation, sprinkled on top of riprap.

2. The device under item 1, characterized in that the triangular prism has a base in the form of an isosceles triangle in which the ratio of equal sides to the base is expressed by the inequality a b, where a is the length of the base; b is the length of the equal sides of the triangle.

3. The device under item 1, characterized in that rock placement arranged in the form of the inverse filter.

 

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FIELD: building, particularly hydraulic structure reinforcement.

SUBSTANCE: method is performed in two-stages. The first stage involves forming vertical elongated flat ground massifs secured by hardening material. Massifs are created in crest embankment area and in upper area of embankment slope so that massifs are spaced minimal available distance from crest and pass through embankment body, including land-sliding upper embankment slope area. Massifs are anchored in mineral bottom by lower edges thereof and are arranged at least in three rows and there are at least three massifs in each row. Method for massifs forming involves driving double-slotted injectors directly in embankment ground or in wells formed in embankment and having plugged wellhead; orienting injector slots perpendicular to hydraulic pressure head vector direction in embankment area to be reinforced; injecting hardening material under increased pressure across horizons from top to bottom or in reverse direction, wherein injection is initially performed under 5-15 atm pressure and at minimal rate in each second injector of one outermost row beginning from extreme ones; feeding hardening material in previously missed injectors in this row; supplying injectors of another extreme row with hardening material in the same way; feeding hardening material to ejectors of medium rows under 10-20 atm pressure; performing the second reinforcement stage as material hardens to obtain 70% strength. The second reinforcement stage involves forming vertical elongated flat massifs of secured ground anchored in mineral bottom by lower edges thereof and arranged at least in three rows, wherein each one includes at least three massifs. Massifs extend at the angle exceeding embankment slope angle to horizontal line. Massifs are formed with the use of double-slotted injectors in remainder embankment area. Injector slots are directed perpendicular to hydraulic pressure head vector direction in embankment area to be reinforced. Hardening material is ejected in above succession, wherein hardening material pressure is equal to design process pressure enough for direction of feeding hardening material through injector slots and lesser than hardening material injection pressure of the first reinforcement stage.

EFFECT: increased reliability of structure reinforcement; prevention of land-slide on structure slopes.

3 cl, 3 dwg

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