CN215857780U

CN215857780U - Ecological protective structure of inflation soil side slope

Info

Publication number: CN215857780U
Application number: CN202121866800.3U
Authority: CN
Inventors: 谢潇; 舒晓晓; 彭飚; 魏雨露; 齐丽; 叶胜兰; 刘思琪
Original assignee: Shaanxi Land Engineering Technology Research Institute Co Ltd
Current assignee: Shaanxi Land Engineering Technology Research Institute Co Ltd
Priority date: 2021-08-11
Filing date: 2021-08-11
Publication date: 2022-02-18
Anticipated expiration: 2031-08-11

Abstract

The utility model discloses an expansive soil side slope ecological protection structure, and belongs to the technical field of side slope protection. The method comprises the following steps: a coarse-grained soil layer, a silt layer and a vegetation soil layer are sequentially paved on the surface of the expansive soil side slope from bottom to top; vegetation is planted on the vegetation soil layer; and the vegetation soil layer, the silt layer and the coarse-grained soil layer at the top of the expansive soil side slope are provided with intercepting ditches, the bottom of the expansive soil side slope is provided with drainage ditches, and the inner separation sections of the vegetation soil layer, the silt layer and the coarse-grained soil layer are provided with soil retaining plates and anchor piles. In the utility model, the silt layer and the coarse-grained soil layer form the capillary barrier belt, so that seepage can be greatly prevented from entering the interior of the expansive soil side slope through the capillary barrier effect, moisture can be effectively prevented from entering the expansive soil side slope, the expansive soil is prevented from swelling and shrinking, the soil body structure is prevented from being damaged, and the stability of the expansive soil side slope is improved; the vegetation soil layer is planted with local vegetation suitable for growth, so that the erosion of the slope can be reduced, the water and soil loss is prevented, and the ecological effect is achieved.

Description

Ecological protective structure of inflation soil side slope

Technical Field

The utility model relates to the technical field of slope protection, in particular to an ecological protection structure for an expansive soil slope.

Background

The expansive soil is widely distributed in China, clay components of the expansive soil mainly comprise strong hydrophilic mineral substances, the cohesive soil is extremely sensitive to moisture change, the expansive soil can undergo repeated expansion and contraction deformation under the change of external climatic and geological conditions, the volume of some expansive soil is increased by as much as thirty percent or even higher due to the increase of the moisture content, cracks are often generated in the contraction process, and the expansive soil is called as disastrous soil in the engineering industry. The slope engineering in the expansive soil area is often exposed to the external environment, so that the disaster is particularly common. In the engineering construction process, due to the fact that repeated expansion and contraction deformation of expansive soil can cause great harm to the built structures, many reports are reported at home and abroad about damage and failure of infrastructures such as houses, bridges and roads in expansive soil areas under the action of dry and wet climates, and related economic losses caused by the damage and failure are increased year by year.

The expansive soil side slope is mainly damaged by infiltration of moisture due to rainfall or the like, and therefore if the infiltration of moisture can be prevented, the expansive soil side slope can be largely prevented from being damaged.

The traditional expansive soil side slope is mainly protected by adopting engineering measures, such as: the construction measures are complex in structure and construction, and are not beneficial to vegetation growth and destroy the ecological environment. The method of reinforcing the expansive soil slope by adopting the vegetation and the root systems thereof is also available, but the root systems of the vegetation can form larger root holes in the soil to promote the infiltration of water, and the damage of the expansive soil slope can be aggravated.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model provides an expansive soil side slope ecological protection structure. The method comprises the following steps: a coarse-grained soil layer, a silt layer and a vegetation soil layer are sequentially paved on the surface of the expansive soil side slope from bottom to top;

the vegetation soil layer is planted with vegetation; a water intercepting ditch is arranged on the vegetation soil layer, the silt layer and the coarse grain soil layer at the top of the expansive soil side slope, and a drainage ditch is arranged at the bottom of the expansive soil side slope; the vegetation soil layer, silt layer and coarse grain soil layer upper compartment are provided with fender native board and anchor pile, the anchor pile sets up keep off native board bottom, and one end is squeezed into inside the native slope of inflation.

Further, the coarse-grained soil layer is one or more of gravel, concrete, tiles and stone particles.

Further, the grain size of the coarse-grained soil layer is 5-20 mm.

Further, the thickness of the coarse-grained soil layer is 15 cm-20 cm.

Further, the vegetation soil layer is composed of expansive soil and soil layers which are beneficial to local vegetation growth.

Further, the dry density of the vegetation soil layer is 1.35-1.40 g/cm³。

Further, the thickness of the vegetation soil layer is 10-20 cm.

Further, the dry density of the silt layer is 1.45-1.50 g/cm³。

Further, the thickness of the silt layer is 30-40 cm.

Furthermore, geotextile is laid between the silt layer and the coarse-grained soil layer.

The technical scheme provided by the utility model has the beneficial effects that: in the utility model, the coarse-grained soil layer, the silt layer and the vegetation soil layer are sequentially paved on the surface of the expansive soil side slope from bottom to top, and the silt layer and the coarse-grained soil layer form a capillary barrier zone, so that seepage can be greatly prevented from entering the expansive soil side slope through the capillary barrier effect, moisture can be effectively prevented from entering the expansive soil side slope, the expansive soil is prevented from expanding and shrinking, the structure of a soil body is damaged, and the stability of the expansive soil side slope is improved; the vegetation soil layer is planted with local vegetation suitable for growth, so that the erosion of the slope can be reduced, the water and soil loss is prevented, and the ecological effect is achieved.

Drawings

Fig. 1 is a schematic structural view of an ecological protection structure of an expansive soil slope provided by the utility model.

Reference numerals: 1-expansive soil slope; 2-vegetation soil layer; 3-a silt layer; 4-coarse soil layer; 5-vegetation; 6-intercepting the ditch; 7-a drainage ditch; 8-a soil retaining plate; 9-anchor pile.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "upper", "lower", "left", "right" and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Fig. 1 is a schematic structural view of an ecological protection structure of an expansive soil slope provided by the utility model. Referring to fig. 1, an ecological protection structure of an expansive soil side slope comprises: a coarse-grained soil layer 4, a silt layer 3 and a vegetation soil layer 2 are sequentially paved on the surface of the expansive soil side slope 1 from bottom to top; vegetation 5 is planted on the vegetation soil layer 2; a water intercepting ditch 6 is arranged on a vegetation soil layer 2, a silt layer 3 and a coarse grain soil layer 4 at the top of the expansive soil side slope 1, and a drainage ditch 7 is arranged at the bottom of the expansive soil side slope 1; the inner partition sections of the vegetation soil layer 2, the silt layer 3 and the coarse grain soil layer 4 are provided with soil retaining plates 8 and anchor piles 9, the anchor piles 9 are arranged at the bottoms of the soil retaining plates 8, and one ends of the anchor piles are driven into the interior of the expansive soil side slope 1.

It should be noted that the silt layer 3 and the coarse-grained soil layer 4 form a capillary barrier zone, so that seepage can be greatly prevented from entering the expansive soil side slope through the capillary barrier effect, moisture can be effectively prevented from entering the expansive soil side slope, the expansive soil is prevented from swelling and shrinking, the soil body structure is prevented from being damaged, and the stability of the expansive soil side slope is improved; the silt layer 3 is used as a water storage functional layer. Vegetation 5 suitable for growing in local is planted on vegetation soil layer 2, and mixable fertilizer is in order to promote the vegetation to grow in vegetation soil layer 2, and vegetation soil layer 2 and vegetation 5 can reduce the dome wash, prevent soil erosion and water loss, have ecological effect simultaneously concurrently. In addition, the soil retaining plate 8 is formed by lapping steel or wood or bamboo chips, and is arranged at certain intervals along the horizontal direction of the slope, so that soil loss can be prevented, the anchor piles 9 are wood piles or steel bars, are driven into the slope to a certain depth, are arranged below the soil retaining plate 8, and play a role in supporting the soil retaining plate 8.

The utility model has simple structure and convenient construction, and the structure is an expansive soil slope protection structure which has good waterproof effect and is beneficial to plant growth, thereby avoiding the collapse damage of the expansive soil slope caused by water infiltration and improving the stability of the expansive soil slope.

Further, the coarse-grained soil layer 4 is one or more of gravel, concrete, tiles and stone particles.

Furthermore, the grain size of the coarse-grained soil layer 4 is 5-20 mm.

Further, the thickness of the coarse soil layer 4 is 15 cm-20 cm.

The coarse-grained soil layer 4 is one or more of the crushed construction wastes such as concrete, bricks and tiles, stone, gravel and the like, so that the resource utilization of the construction wastes is realized. The coarse-grained soil layer 4 is 5-20 mm in grain size, 15-20 cm in thickness and good in gradation, so that the water storage capacity of the capillary barrier zone is improved.

Further, the vegetation soil layer 2 is composed of expansive soil and soil layers favorable for local vegetation growth. For example, red soil is typically a evergreen broad-leaved forest, and the red soil is suitable for the following main species: red roasting, black roasting, rose syzygium jambos, cinnamon bark, etc.

Further, the dry density of the vegetation soil layer 2 is 1.35-1.40 g/cm³。

Furthermore, the thickness of the vegetation soil layer 2 is 10-20 cm. Is suitable for the growth of vegetation and meets the requirements of engineering.

Further, the dry density of the silt layer 3 is 1.45-1.50 g/cm³。

Further, the thickness of the silt layer 3 is 30-40 cm. So as to exert the water storage function.

Furthermore, geotextile is laid between the silt layer 3 and the coarse-grained soil layer 4. Prevent the mixing and loss between two layers of soil.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides an ecological protective structure of inflation soil side slope which characterized in that includes: a coarse-grained soil layer (4), a silt layer (3) and a vegetation soil layer (2) are sequentially paved on the surface of the expansive soil side slope (1) from bottom to top;

vegetation (5) are planted on the vegetation soil layer (2); a water intercepting ditch (6) is arranged on the vegetation soil layer (2), the silt layer (3) and the coarse grain soil layer (4) at the top of the expansive soil side slope (1), and a drainage ditch (7) is arranged at the bottom of the expansive soil side slope (1); the interior partition section of vegetation soil layer (2), silt layer (3) and coarse grain soil layer (4) is provided with and keeps off native board (8) and anchor pile (9), anchor pile (9) set up keep off native board (8) bottom, and one end is squeezed into inside native slope (1) of inflation.

2. The ecological protection structure of an expansive soil side slope as claimed in claim 1, wherein the coarse soil layer (4) is one or more of gravel, concrete, brick and tile, and stone particles.

3. The ecological protection structure of an expansive soil side slope as claimed in claim 2, wherein the particle size of the coarse soil layer (4) is 5-20 mm.

4. The ecological protection structure of an expansive soil side slope as claimed in claim 3, wherein the thickness of the coarse soil layer (4) is 15 cm-20 cm.

5. The ecological protection structure of an expansive soil slope as claimed in claim 1, wherein the vegetation soil layer (2) is composed of expansive soil and soil layers beneficial to the growth of local vegetation.

6. The ecological protection structure with the expansive soil side slope as claimed in claim 5, wherein the dry density of the vegetation soil layer (2) is 1.35-1.40 g/cm³。

7. The ecological protection structure with the expansive soil side slope as claimed in claim 6, wherein the thickness of the vegetation soil layer (2) is 10-20 cm.

8. The ecological protection structure of an expansive soil side slope as claimed in claim 1, wherein the dry density of the silt layer (3) is 1.45-1.50 g/cm³。

9. The ecological protection structure of an expansive soil side slope as claimed in claim 8, wherein the thickness of the silt layer (3) is 30-40 cm.

10. The ecological protection structure of an expansive soil side slope as claimed in any one of claims 1 to 9, wherein a geotextile is laid between the silt layer (3) and the coarse soil layer (4).