Ecological retaining wall with cavity structure

Abstract

According to the ecological retaining wall with the cavity structure, the cavity is formed in the retaining wall, and the multiple cavity inlets are formed in the upstream face, so that inhabiting and growing space can be effectively provided for aquatic animals and plants in a river channel, the ecological environment of the river channel is improved, and harmonious symbiosis of people and water is achieved. The ecological retaining wall with the cavity structure comprises a retaining wall body; a cavity structure is arranged in the retaining wall body and penetrates through the retaining wall body in the river direction. A plurality of cavity inlets communicating with the cavity structure are formed in the upstream face of the retaining wall body; the cavity inlets are distributed in the positions, with different heights, of the upstream face of the retaining wall body.

Description

TECHNICAL FIELD

[0001] The utility model relates to an ecological retaining wall, in particular to an ecological retaining wall with cavity structure, belongs to hydraulic engineering technical field. BACKGROUND

[0002] River bank protection is the engineering measure taken to protect the river embankment from water flow, wave attack and scour. In recent years, with the continuous development of engineering technology, the bank protection forms are various, but for the existing steep bank slope, poor bank slope stability, high anti-scour requirement vertical bank protection, the traditional retaining wall and slope greening form is still mostly adopted. Although this river bank protection structure has certain ecological function, the growth conditions of aquatic plants and animals in the river are not considered, and the ecological effect is poor. SUMMARY

[0003] Therefore, the utility model provides an ecological retaining wall with cavity structure, cavity is arranged in the retaining wall, and a plurality of cavity inlets are arranged on the water surface, which can effectively provide space for aquatic plants and animals to grow and improve the ecological environment of the river to realize the harmonious coexistence of man and water.

[0004] The technical scheme of the utility model is as follows: an ecological retaining wall with cavity structure, comprising: a retaining wall body; a cavity structure is arranged in the retaining wall body, and the cavity structure penetrates the retaining wall body along the river direction;

[0005] A plurality of cavity inlets in communication with the cavity structure are arranged on the water surface of the retaining wall body; the cavity inlets are distributed at different height positions on the water surface of the retaining wall body.

[0006] As a preferred mode of the utility model: a plurality of layers of geogrids are arranged in the cavity structure along the height direction.

[0007] As a preferred mode of the utility model: a plurality of cavity inlets are arranged on the water surface of the retaining wall body along the height direction, and each row has a plurality of cavity inlets arranged along the horizontal direction.

[0008] As a preferred mode of the utility model: the top elevation of the cavity inlet located at the bottom is consistent with the design normal water level of the river; the top elevation of the cavity inlet located at the uppermost layer is higher than the design normal water level of the river and is higher than the design working flood level of the river by a set distance.

[0009] As a preferred mode of the utility model: a middle-upper cavity inlet climbing ridge is arranged in the cavity inlet located at the middle-upper part of the water surface of the retaining wall body.

[0010] As a preferred mode of the utility model: a plurality of drainage holes in communication with the cavity structure are distributed on the backwater surface of the retaining wall body along the height direction.

[0011] As a preferred way of the utility model: the drainage hole outside is provided with graded filter gravel, and plays a reverse filtering role.

[0012] As a preferred way of the utility model: the cavity inlet width b is 1m-2m;The adjacent cavity inlet horizontal net distance c is 2m-3m;The height d of the cavity inlet located in the upper middle part is 0.3m;The height h of the cavity inlet located in the bottom is h2-h1, wherein h1 is the design river bottom elevation, and h2 is the design normal water level;

[0013] The thickness m of the backwater surface of the retaining wall body is not less than 0.3m;The thickness n of the cavity inlet is not less than 0.3m.

[0014] Beneficial effects:

[0015] (1) the utility model discloses a cavity structure in the river channel protection slope retaining wall, sets up a plurality of cavity inlets communicating with the cavity structure on the water-facing surface, thereby retaining the traditional concrete hard protection slope characteristics, reducing the land range of bank slope protection, ensuring the stability of the protection slope, and constructing a new ecological system between the river bottom and the upper turf or plant protection slope, ensuring the contact and interaction of the entire river bank ecology from water to shore.

[0016] (2) in the utility model, the bottom of the cavity structure is consistent with the design river bottom elevation, and a plurality of geogrids are arranged inside, which can naturally attach soil and plankton after a certain time, and can meet the habitat needs of amphibians under different water levels.

[0017] (3) in the utility model, the cavity inlet in the upper middle part of the water-facing surface of the retaining wall can make the cavity normally communicate with the outside air, avoid the lack of oxygen in the cavity when the water level is higher than the top of the bottom cavity inlet due to the rise of water, and affect the survival of aquatic animals inside;

[0018] (4) in the utility model, the upper middle part cavity inlet climbing ridge is arranged in the upper middle part cavity inlet of the water-facing surface of the retaining wall, so that the upper middle part cavity inlet can also be used as a temporary climbing channel for people falling into the water to get on the shore, solving the problem of difficult landing of people in the water caused by the straight slope of the conventional retaining wall water-facing surface. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the horizontal section view of the ecological retaining wall of the utility model;

[0020] Figure 2 It is the elevation view of the ecological retaining wall of the utility model.

[0021] Wherein: 1-bottom cavity inlet; 2-middle upper cavity inlet; 21-middle upper cavity inlet climbing; 3-drainage hole; 31-graded filter broken stone; 4-geogrid; 5-retaining wall wall thickness backfill; 6-slope protection layer; 7-retaining wall backwater surface; 71-cavity structure backwater surface; 8-retaining wall body; 9-cavity structure. DETAILED DESCRIPTION

[0022] The utility model will be made further detailed explanation in combination with the drawings and examples.

[0023] The embodiment provides an ecological retaining wall with a cavity structure, which is provided with a cavity structure inside a river channel slope retaining wall, retains the characteristics of traditional concrete hard slope protection, reduces the land occupation range of slope protection, and ensures the stability of slope protection; and can build a new ecological system between the river bottom and the upper turf or plant slope protection, ensuring the connection and interaction of the entire river bank ecology from water to the shore.

[0024] As shown in Figure 1 and Figure 2 , the ecological retaining wall is a river channel slope retaining wall, which comprises a retaining wall body 8; the retaining wall body 8 is a traditional concrete hard slope protection; a cavity structure 9 is arranged inside the retaining wall body 8, and the cavity structure 9 penetrates the retaining wall body 8 along the river flow direction; wherein the bottom of the cavity structure 9 is consistent with the design river bottom elevation; a plurality of layers of geogrids 4 are arranged inside the cavity structure 9 along the height direction, the geogrids 4 can naturally attach soil and plankton, thereby meeting the habitat needs of amphibians at different water levels.

[0025] A plurality of cavity inlets communicating with the cavity structure 9 inside the retaining wall body 8 are arranged at different heights of the water-facing surface of the retaining wall body 8, specifically: the cavity inlets communicating with the cavity structure 9 are arranged at intervals in the horizontal and vertical directions of the water-facing surface of the retaining wall body 8; it can also be understood that: a plurality of rows of cavity inlets are arranged at intervals along the vertical direction of the water-facing surface of the retaining wall body 8, and each row has a plurality of cavity inlets arranged at intervals along the horizontal direction.

[0026] As an example, as shown in Figure 2 , three rows of cavity inlets are arranged horizontally along the height direction of the water-facing surface of the retaining wall body 8, and each row has a plurality of cavity inlets arranged at intervals along the horizontal direction; the bottom cavity inlet 1 is located at the lowermost position, and the two upper rows are middle upper cavity inlets 2.

[0027] The top elevation of the bottom cavity inlet is consistent with the design normal water level of the river channel; the top elevation of the uppermost cavity inlet is higher than the design normal water level of the river channel, and is higher than the design working flood level of the river channel by a set distance (such as 0.5 m), so as to ensure that the cavity structure 9 is in communication with the outside air under normal circumstances.

[0028] In the scheme, the middle-upper cavity inlet 2 can also be used as a temporary climbing channel for the fallen person to get on the shore, solving the problem of difficulty of the fallen person to get on the shore caused by the straight slope of the conventional retaining wall water surface; based on this, the middle-upper cavity inlet climbing ridge 21 is arranged in the middle-upper cavity inlet 2.

[0029] The retaining wall backwater surface 7 and the cavity structure backwater surface 71 are filled with the retaining wall thickness backfill soil 5; a plurality of drainage holes 3 are arranged between the retaining wall backwater surface 7 and the cavity structure backwater surface 71, that is, on the backwater surface of the retaining wall body 8, corresponding to the position of the cavity structure 9, a plurality of drainage holes 3 communicating with the cavity structure 9 are distributed in the height direction, for reducing the pressure of the retaining wall thickness backfill soil 5. The outside of the drainage hole 3 is provided with a graded filter gravel 31, which plays a reverse filtration role.

[0030] The upper part of the retaining wall body 8 uses turf or plants as the slope protection layer 6.

[0031] As an example, in the engineering implementation, the cavity inlet width b is 1m-2m; the horizontal net distance c between adjacent cavity inlets is 2m-3m; the height d of the middle-upper cavity inlet 2 is 0.3m; the height h of the bottom cavity inlet 1 is h2-h1, wherein h1 is the design river bottom elevation, and h2 is the design normal water level; the top elevation h3 of the uppermost layer of cavity inlets is higher than the design normal water level of the river channel and 0.5m higher than the design working flood level of the river channel; the vertical net distance k between the two adjacent rows of middle-upper cavity inlets 2 is 0.5m; the thickness m of the retaining wall backwater surface is not less than 0.3m; the thickness n of the cavity inlet is not less than 0.3m; the height of the middle-upper cavity inlet climbing ridge is 0.1m, and the thickness is 0.1m.

[0032] Although the utility model has been described in detail above with general description and specific embodiments, some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the utility model all belong to the scope of protection required by the utility model.

Claims

1. An ecological retaining wall having a cavity structure, characterized by, It includes: The retaining wall body (8) is internally provided with a cavity structure (9) which penetrates the retaining wall body (8) along the river direction; The retaining wall body (8) is provided with a plurality of cavity inlets which are communicated with the cavity structure (9) on the water-facing surface; the cavity inlets are distributed at different height positions on the water-facing surface of the retaining wall body (8).

2. The ecological retaining wall having a cavity structure according to claim 1, wherein, The cavity structure (9) is internally provided with a plurality of layers of geogrids (4) which are arranged along the height direction.

3. The ecological retaining wall having a cavity structure according to claim 1 or 2, wherein, The water-facing surface of the retaining wall body (8) is provided with a plurality of rows of cavity inlets along the height direction, and each row has a plurality of cavity inlets which are arranged along the horizontal direction.

4. The ecological retaining wall having a cavity structure according to claim 3, wherein, The top elevation of the cavity inlet located at the bottom is consistent with the design normal water level of the river channel; the top elevation of the cavity inlet located at the uppermost layer is higher than the design normal water level of the river channel and is set at a distance higher than the design working flood level of the river channel.

5. The ecological retaining wall having a cavity structure according to claim 1 or 2, wherein The cavity inlet located at the middle and upper part of the water-facing surface of the retaining wall body (8) is internally provided with a middle and upper cavity inlet climbing ridge (21).

6. The ecological retaining wall having a cavity structure according to claim 1 or 2, wherein On the backwater surface of the retaining wall body (8), a plurality of drainage holes (3) which are communicated with the cavity structure (9) are distributed along the height direction.

7. The ecological retaining wall having a cavity structure according to claim 6, wherein, The drainage hole (3) is externally provided with a graded filter gravel (31) which plays a reverse filtering role.

8. The ecological retaining wall having a cavity structure according to claim 1 or 2, wherein The width b of the cavity inlet is 1m-2m; the horizontal net distance c of the adjacent cavity inlets is 2m-3m; the height d of the cavity inlet located at the middle and upper part is 0.3m; the height h of the cavity inlet located at the bottom is h2-h1, wherein h1 is the design river bottom elevation and h2 is the design normal water level; The thickness m of the backwater surface of the retaining wall body (8) is not less than 0.3m; the thickness n of the cavity inlet is not less than 0.3m.

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