Rock slope ecological restoration structure

Abstract

The utility model discloses a rock slope ecological restoration structure which comprises a reinforced three-dimensional geonet pad and anchor rods, and the anchor rods are transversely arranged at intervals in rows along the slope surface of a rock slope. The reinforced three-dimensional geonet pad is arranged between two adjacent rows of anchor rods along the slope surface of the rock slope, one side of the reinforced three-dimensional geonet pad is fixedly connected with the upper row of anchor rods, the other side of the reinforced three-dimensional geonet pad is folded upwards to form a containing cavity, and the bottom of the containing cavity abuts against the lower row of anchor rods; an inverted filter layer is arranged in the containing cavity, planting soil is arranged on the inverted filter layer, and green plants are arranged in the planting soil. The technical problems that in the traditional repairing technology, construction difficulty is large, maintenance cost is high, and the greening effect is not attractive are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rock slope ecological restoration engineering, and specifically relates to a rock slope ecological restoration structure. Background Art

[0002] In actual geotechnical engineering, the construction and excavation of a large number of foundation projects have formed many exposed rock slopes. In some high-slope and deep-excavation areas, the gravity balance of the rock slopes is severely damaged, resulting in landslides or collapses. This kind of construction and excavation of foundation projects not only damages the ecological environment, but also damages the natural landscape. It often takes a long time to restore to the original state through natural succession. Due to the good stability of rock slopes, a large slope ratio design is often used in slope construction and excavation. Rock slopes are generally steeper, and the water content and water retention of rock slopes are poor. It is very difficult to restore the ecology on such slopes. Therefore, the problem of rock slope greening has become a difficult point in the interdisciplinary research of geotechnical and ecological engineering. Restoring the rock slope ecosystem has become one of the important research topics of ecological restoration in the field of natural resources.

[0003] In developed countries and regions, biological protection and ecological protection technologies combining biological and engineering measures are widely used for rock slopes. For example, Western Europe and the United States use tires hung on the cliff face and covered with soil to restore vegetation. South Korea uses the method of tying straw sticks to fix the slope surface and covering it with soil to solve the problem of rock slope regreening. Japan mainly uses soil and seeds sprayed on the rock surface and straw as a covering material to regreen rock slopes, that is, foreign soil spraying greening technology. Domestic research on this aspect started late, and the commonly used methods include foreign soil spraying greening, hole planting shrubs, planting climbing and hanging vines, etc. Among them, foreign soil spraying greening technology mainly draws on foreign construction methods, especially Japan. Due to the vast territory of my country, the rock properties, rainfall characteristics, and vegetation growth environment of rock slopes vary from place to place. At present, my country has not yet formed a unified construction system suitable for my country's national conditions. The traditional vegetation trough type high steep rock slope ecological restoration technology requires manual operation on the slope surface, which has the disadvantages of high construction difficulty, high maintenance cost, and unsightly greening effect. Utility Model Content

[0004] In view of the current technical problems, the utility model aims to provide a rock slope ecological restoration structure, which can effectively solve the technical problems existing in traditional restoration technologies, such as high construction difficulty, high maintenance cost and unsightly greening effect.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A rock slope ecological restoration structure, which has the following structural features: it includes a reinforced three-dimensional geogrid and anchor rods, the anchor rods are arranged in rows and intervals along the slope surface of the rock slope; the reinforced three-dimensional geogrid is arranged between two adjacent rows of anchor rods along the slope surface of the rock slope, one side of the reinforced three-dimensional geogrid is fixedly connected to the upper row of anchor rods, and the other side is folded upward to form a accommodating cavity, the bottom of which is in contact with the lower row of anchor rods; a filter layer is arranged in the accommodating cavity, planting soil is arranged on the filter layer, and green plants are arranged in the planting soil.

[0007] The purpose of setting up the anti-filter layer is to filter and prevent soil loss, and to support the upper planting soil. The planting soil can be selected from the topsoil stripped from the surface, and the improved soil with peat soil and compound fertilizer can be added. According to the slope height, the planting soil can be transported to the containing cavity by different methods such as excavators and cranes. The green plants can be shrubs, vines, etc., so that the slope surface can achieve an overall greening effect. Since the reinforced three-dimensional geonet has a certain mechanical strength and has the function of preventing rainfall erosion, it has a certain supporting function. The reinforced three-dimensional geonet is fixed on the slope surface by anchor rods, and the anti-filter layer and planting soil are arranged in the containing cavity under the reinforced three-dimensional geonet, so that the planting soil layer is fixed on the slope surface. The grass, shrub and vine vegetation can be restored in the planting soil layer by sowing, cutting live branches, planting seedlings, etc. The rock slope ecological restoration structure of the utility model fully covers the slope surface with the reinforced three-dimensional geonet, which plays an erosion control role on the rock slope. At the same time, green plants are arranged in the containing cavity to make the slope green again, thereby improving the visual effect of greening.

[0008] The rock slope repairing structure of the utility model has simple procedures and short construction period.

[0009] Preferably, the end of the reinforced three-dimensional geogrid is folded upward and fixedly connected to the middle and lower parts of the reinforced three-dimensional geogrid, and the planting soil is completely wrapped by the reinforced three-dimensional geogrid.

[0010] Specifically, the ends and the middle and lower parts of the reinforced three-dimensional geonet mat and the reinforced three-dimensional geonet mat and the anchor rods are connected by steel wires or stainless steel C-shaped nails. The steel wires can be used for single-circle and double-circle interval binding, or stainless steel C-shaped nails can be used for ring connection.

[0011] Preferably, the anchor rod is made of steel bars with a diameter of 8 to 20 mm, and the steel bars are treated with rust prevention on their surface. The steel bars can be galvanized or sprayed with rust prevention paint.

[0012] Preferably, the length of the anchor rod is 500-800 mm, and the length of the anchor rod set in the rock slope is 300-500 mm.

[0013] Preferably, the anchor rods are evenly arranged along the slope of the rock slope, with the spacing between two adjacent rows of anchor rods being 1 to 3 m, and the spacing between two adjacent left and right anchor rods being 0.3 to 1.0 m. The slope spacing of the anchor rods can be determined according to the characteristics of the plants in the later stage and the needs of the customer for vegetation restoration.

[0014] Preferably, the planting soil is set at a height of 10 to 30 cm.

[0015] Preferably, the filter layer can be a non-woven geotextile or jute cloth. The non-woven geotextile can be a polyester long-fiber non-woven fabric.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The rock slope ecological restoration structure of the utility model fully covers the slope surface by reinforcing the three-dimensional geonet mat, which plays an erosion control role on the rock slope. At the same time, green plants are arranged in the accommodating cavity to regreen the slope and improve the greening visual effect.

[0018] 2. The rock slope ecological restoration structure of the utility model has simple procedures and a short construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the rock slope repair structure of the utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of the left view structure;

[0021] Figure 3 for Figure 1 Schematic diagram of the local enlarged structure.

[0022] In the figure:

[0023] 1-reinforced three-dimensional geogrid, 2-anchor rod, 3-rock slope, 4-containment cavity, 5-filter layer, 6-planting soil, 7-green plants. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict. For the convenience of description, if the words "upper", "lower", "left" and "right" appear in the following text, they only indicate that the upper, lower, left and right directions are consistent with the drawings themselves, and do not limit the structure.

[0025] like Figure 1 and Figure 2 As shown, this embodiment provides a rock slope ecological restoration structure including a reinforced three-dimensional geomembrane 1 and anchor rods 2, wherein the anchor rods 2 are arranged in rows and at even intervals along the slope surface of the rock slope 3. Figure 3 As shown, the reinforced three-dimensional geogrid 1 is arranged between two adjacent rows of anchor rods 2 along the slope surface of the rock slope 3. One side of the reinforced three-dimensional geogrid 1 is fixedly connected to the adjacent upper row of anchor rods 2, and the other side is folded upward and fixedly connected to the middle of the reinforced three-dimensional geogrid 1 to form a receiving cavity 4, and the bottom of the receiving cavity 4 is in contact with the adjacent lower row of anchor rods 2. A filter layer 5 is arranged in the receiving cavity 4, and the filter layer 5 is made of non-woven geotextile. Planting soil 6 is arranged on the filter layer 5, and the planting soil 6 is completely wrapped by the reinforced three-dimensional geogrid 1. Green plants 7 are planted in the planting soil 6, so as to regreen the slope.

[0026] The rock slope repair structure provided in this embodiment has specific construction steps as follows:

[0027] 1) Slope preparation: remove dangerous rock and pumice on the rock slope 3;

[0028] 2) Construction of anchor rod 2: Anchor rod 2 uses threaded steel bar anchor rod with a diameter of 10mm. The length exposed on the outside of the rock slope 3 is 200-300mm, and the length extended into the inside of the rock slope 3 is 300-500mm. Anchor rod 2 needs to be anchored to the stable rock mass by at least 300mm. When anchor rod 2 is constructed, it is drilled and hammered into the slope surface of the rock slope 3. The spacing between two adjacent anchor rods 2 on the left and right is 0.6m. Along the slope direction, the vertical spacing between two adjacent rows of anchor rods 2 is 2m.

[0029] 3) Laying the reinforced three-dimensional geogrid 1: The width of the reinforced three-dimensional geogrid 1 is 2m, and it is arranged in the length direction on the slope surface of the rock slope 3. The two reinforced three-dimensional geogrids 1 are tied and connected as a whole by steel wire; the upper end of the reinforced three-dimensional geogrid 1 is fixedly connected to the upper row of anchor rods 2 by steel wire, and the reinforced three-dimensional geogrid 1 is arranged close to the slope surface. The lower end of the reinforced three-dimensional geogrid 1 relies on the lower row of anchor rods 2 and is reversed outward to form a receiving cavity 4; the receiving cavity 4 is lined with non-woven geotextile to prevent the loss of planting soil 6 particles;

[0030] 4) Filling with planting soil 6: Backfill the planting soil 6 inside the accommodating cavity 4 formed at the lower end of the reinforced three-dimensional geotextile mat 1 to the natural repose angle. Depending on the slope height, the planting soil 6 can be filled in different ways such as an excavator or a crane. The planting soil 6 can be made of topsoil that has been stripped, and improved soil with peat soil and compound fertilizer added. Seeds are sown on the surface of the planting soil 6, and the corresponding species are reasonably selected according to the actual situation on site.

[0031] 5) Sealing the reinforced three-dimensional geogrid 1: Wrapping the lower end of the reinforced three-dimensional geogrid 1 and connecting it to the lower and middle mesh surface of the reinforced three-dimensional geogrid 1 through twisted steel wires, thereby completely wrapping the planting soil 6;

[0032] 6) Cutting shrubs: Cutting shrub branches suitable for local growth in the area through the reinforced three-dimensional geonet mat 1 into the planting soil 6, exposing the buds;

[0033] 7) After the construction is completed, watering maintenance is carried out. Depending on the actual working conditions, watering truck maintenance or sprinkler irrigation system maintenance can be selected.

[0034] The contents explained in the above embodiments should be understood as these embodiments are only used to more clearly illustrate the present invention, and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the embodiments by those skilled in the art fall within the scope defined by the claims attached to the present invention.

Claims

1. A rock slope ecological restoration structure, characterized by: It comprises a reinforced three-dimensional geomembrane (1) and anchor rods (2), wherein the anchor rods (2) are arranged in rows and at intervals along the slope surface of a rock slope (3); The reinforced three-dimensional geonet (1) is arranged between two adjacent rows of anchor rods (2) along the slope surface of the rock slope (3); one side of the reinforced three-dimensional geonet (1) is fixedly connected to the upper row of anchor rods (2), and the other side is folded upward to form a receiving cavity (4); the bottom of the receiving cavity (4) is in contact with the lower row of anchor rods (2); A filter layer (5) is arranged in the containing cavity (4), planting soil (6) is arranged on the filter layer (5), and green plants (7) are arranged in the planting soil (6).

2. The rock slope ecological restoration structure according to claim 1 is characterized by: The end of the reinforced three-dimensional geogrid (1) is folded upward and fixedly connected to the middle and lower part of the reinforced three-dimensional geogrid (1), and the planting soil (6) is completely wrapped by the reinforced three-dimensional geogrid (1).

3. The rock slope ecological restoration structure according to claim 2 is characterized by: The end and the middle and lower part of the reinforced three-dimensional geogrid (1) as well as the reinforced three-dimensional geogrid (1) and the anchor rod (2) are all connected by steel wires or stainless steel C-shaped nails.

4. The rock slope ecological restoration structure according to claim 1 is characterized by: The anchor rod (2) is made of steel bars with a diameter of 8 to 20 mm, and the surface of the steel bars is subjected to rust-proof treatment.

5. The rock slope ecological restoration structure according to claim 4 is characterized by: The length of the anchor rod (2) is 500-800 mm, and the length of the anchor rod (2) arranged in the rock slope (3) is 300-500 mm.

6. The rock slope ecological restoration structure according to claim 4 is characterized by: The anchor rods (2) are evenly arranged along the slope surface of the rock slope (3), the spacing between two adjacent rows of anchor rods (2) is 1 to 3 m, and the spacing between two adjacent left and right anchor rods (2) is 0.3 to 1.0 m.

7. The rock slope ecological restoration structure according to claim 1 is characterized by: The planting soil (6) is arranged at a height of 10 to 30 cm.

8. The rock slope ecological restoration structure according to claim 1 is characterized by: The filter layer (5) is a non-woven geotextile or jute cloth.

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