Rapid greening structure suitable for plateau slag piled body

Abstract

The invention provides a rapid greening structure on a plateau slag piled body, which comprises a protection structure located at a slope toe of the slag piled body, an outer side guard formed by splicing reinforced concrete prefabricated members left and right is arranged on the side, close to a river, of the protection structure, and a planting groove is formed by the outer side guard and the top surface of the protection structure; a composite geomembrane is laid on the inner surface of the planting groove, and the composite geomembrane is filled with planting soil; the reinforced concrete prefabricated part comprises a front wall soil retaining section, a rear wall stabilizing section and a middle connecting section used for connecting the front wall soil retaining section and the rear wall stabilizing section. The front wall soil retaining section, the rear wall stabilizing section and the middle connecting section are I-shaped, and the front wall soil retaining section is thin-walled; the front wall soil retaining section is located on the lower side of the slope, and the rear wall stabilizing section is located on the upper side of the slope. At least the rear wall stabilizing section is embedded into the planting soil. The rapid greening structure is high in construction speed, good in greening effect in the plateau area, high in safety, low in investment, durable and reliable in structure and good in greening effect.

Description

Technical Field

[0001] This invention belongs to the field of water conservancy engineering technology, and in particular relates to a rapid greening structure suitable for high-altitude slag heaps. Background Technology

[0002] Hydropower projects typically require the construction of spoil heaps, which can cause significant damage to the surrounding natural environment during construction. Given the inherently fragile environment of the southwestern plateau region, timely and rapid vegetation restoration and soil and water conservation measures are essential. Spoil heaps are often composed of boulders and rock fragments, with low soil content and poor water retention.

[0003] For the aforementioned slag heaps located in the southwestern plateau region, especially when the slag heaps are situated near a river, slope protection and greening measures are required. The greening measures should be implemented on both the slag heaps and the slope protection, while also taking into account the protection requirements for local species. The greening measures should take into account factors such as the water retention of the slag heaps, the moisture retention and freezing depth of the planting soil, the compatibility of the selected vegetation species with the region, and the location of the slag heaps near the river.

[0004] Common greening measures for existing slag heaps and slope protection structures include cast-in-place concrete planting troughs with soil covering, prefabricated planting troughs with soil covering, and using transitional bedding material with soil covering. Cast-in-place reinforced concrete planting troughs require a large amount of formwork and a certain curing period, leading to a long construction period and high overall cost. Prefabricated planting troughs are expensive to procure and transport in the southwestern plateau region, time-consuming, and have poor adaptability and durability on irregular terrain like slag heaps. Transitional bedding material with soil covering requires high-precision construction techniques, with strict requirements on soil gradation and thickness. Poor on-site gradation control and construction quality issues can lead to soil loss and poor greening effect. Furthermore, planting soil is scarce in the southwestern plateau region, while this method requires a large amount of soil. Summary of the Invention

[0005] The purpose of this invention is to provide a rapid greening structure suitable for high-altitude slag heaps.

[0006] Therefore, the above-mentioned objective of the present invention is achieved through the following technical solution:

[0007] A rapid greening structure suitable for high-altitude slag heaps includes a protective structure at the toe of the slag heap, characterized in that: the protective structure has an outer retaining wall on the river-facing side, which is spliced ​​together from left and right by precast reinforced concrete components, and the outer retaining wall and the top surface of the protective structure form a planting trough;

[0008] The inner surface of the planting trough is covered with a composite geomembrane, and planting soil is filled on the composite geomembrane. Flowers, climbing plants, shrubs and trees are planted in the planting soil.

[0009] The precast reinforced concrete component includes a front retaining section, a rear stabilizing section, and an intermediate connecting section for connecting the two; the front retaining section, the rear stabilizing section, and the intermediate connecting section are in the shape of an I-beam, and the front retaining section is thin-walled; the front retaining section is located on the lower side of the slope, and the rear stabilizing section is located on the upper side of the slope; at least the rear stabilizing section is embedded in the planting soil.

[0010] While adopting the above technical solutions, the present invention may also adopt or combine the following technical solutions:

[0011] As a preferred technical solution of the present invention: drip irrigation pipes are buried in the planting soil.

[0012] As a preferred technical solution of the present invention: a hoisting ring is pre-embedded on the upper edge of the front wall retaining section of the precast reinforced concrete component, and the pre-embedded hoisting ring is welded to the steel mesh of the front wall retaining section.

[0013] As a preferred technical solution of the present invention: a lifting ring is pre-embedded on the upper edge of the rear wall stabilization section of the precast reinforced concrete component, and the pre-embedded lifting ring is welded to the steel mesh of the rear wall stabilization section.

[0014] As a preferred technical solution of the present invention: the upper edge of the front retaining section and the upper edge of the rear stabilizing section of the precast reinforced concrete component are pre-embedded with lifting rings, and the pre-embedded lifting rings are welded to the steel mesh of the front retaining section and the rear stabilizing section.

[0015] As a preferred embodiment of the present invention, the steel mesh is a single layer of steel bars.

[0016] As a preferred embodiment of the present invention, the upper surface of the planting soil is flush with or slightly lower than the opening of the planting trough.

[0017] As a preferred technical solution of the present invention: when planting flowers, grasses and shrubs in the planting soil, the soil covering thickness is 40cm;

[0018] When planting trees in the planting soil, the soil covering thickness should be 140cm.

[0019] As a preferred technical solution of the present invention: the selected flower and grass species are cosmos, sea buckthorn, Nepalese yellow privet, Kentucky bluegrass, wormwood, and alfalfa. The seeds are plump and of high quality, and the mixture ratio is 1:1:1:1:1:1. The sowing density is 120 kg / hm². 2 ;

[0020] Shrubs should be selected and interplanted with red barberry and rhododendron in a 1:1 ratio, with a plant spacing of 1.0m, and 2-3 year old strong seedlings;

[0021] For the trees, choose alpine pine and peach trees for interplanting, with a planting ratio of 1:1, a spacing of 2.0m between trees, a diameter at breast height of 2-5cm, and strong seedlings that are 2-3 years old.

[0022] This invention provides a rapid greening structure suitable for high-altitude spoil heaps. It comprises precast reinforced concrete components, including a front retaining section, a rear stabilizing section, and an intermediate connecting section, assembled side-by-side to form an outer retaining wall. This outer retaining wall, together with a protective structure at the toe of the spoil heap, forms a planting trough. A composite geomembrane is laid on the inner surface of the planting trough, and topped with planting soil. This allows for the planting of flowers, climbing plants, shrubs, and trees. The precast reinforced concrete components can be prefabricated, enabling rapid construction of the greening structure. The construction is fast, provides excellent greening results in high-altitude areas, is highly safe, and requires relatively low investment. The structure is durable and reliable, resulting in superior greening effects. Furthermore, the selected flowers, shrubs, climbing plants, and trees are all native vegetation of the Qinghai-Tibet Plateau, ensuring a superior greening effect when planted together. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of the rapid greening structure suitable for high-altitude slag heaps provided by the present invention.

[0024] Figure 2 This is a plan view of the rapid greening structure suitable for high-altitude slag heaps provided by the present invention.

[0025] Figure 3 This is a cross-sectional view of a precast reinforced concrete component.

[0026] In the diagram: 1-Slag heap; 2-Slope toe protection structure; 3-Composite geomembrane; 4-Planting trough; 5-Reinforced concrete precast component; 6-Planting soil; 7-Flowers and grasses; 8-Shrubs; 9-Climbing plants; 10-Trees; 11-Front wall retaining section; 12-Rear wall stabilizing section; 13-Intermediate connecting section. Detailed Implementation

[0027] The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] A rapid greening structure suitable for plateau slag heaps includes a protective structure 2 at the foot of the slope of the slag heap 1 (i.e., a slope foot protection structure, which has the characteristics of high permeability and poor flatness). The protective structure 2 has an outer retaining wall on the river-facing side, which is spliced ​​together from the left and right precast reinforced concrete components 5. The outer retaining wall and the top surface of the protective structure 2 form a planting trough 4.

[0029] A composite geomembrane 3 is laid on the inner surface of the planting trough 4 (before laying, the surface of the slag heap must be cleaned and leveled to prevent the composite geomembrane 3 from being damaged, and to ensure that the precast reinforced concrete components 3 are neatly and aesthetically pleasing). Planting soil 6 is filled on the composite geomembrane 3, and flowers, grasses, climbing plants, shrubs, and trees are planted in the planting soil 6. The composite geomembrane 3 is laid to improve the water retention and moisture retention of the planting soil 6, and to ensure that the fine particles in the planting soil and slag heap are not washed away. This can better ensure the survival of the planted flowers, grasses, shrubs, and trees in the dry and rainless conditions of the plateau, improve the greening effect, and reduce the difficulty of maintenance.

[0030] The precast reinforced concrete component 5 includes a front retaining section 11, a rear stabilizing section 12, and an intermediate connecting section 13 for connecting the two. The front retaining section 11, the rear stabilizing section 12, and the intermediate connecting section 13 are precast together as a whole in the shape of an I-beam. The front retaining section 11 is thin-walled. The front retaining section 11 is located on the lower side of the slope, and the rear stabilizing section 12 is located on the upper side of the slope. At least the rear stabilizing section 12 is embedded in the planting soil 6. In this embodiment, both the rear stabilizing section 12 and the intermediate connecting section 13 are embedded in the planting soil 6 to prevent the front retaining section from overturning due to lateral earth pressure.

[0031] 5. Reinforced concrete precast components can be prefabricated in the processing plant in advance for use, which speeds up the greening construction.

[0032] Drip irrigation pipes are buried within the planting soil.

[0033] The upper edge of the front retaining section 11 and the upper edge of the rear stabilizing section 12 of the precast reinforced concrete component 5 are pre-embedded with lifting rings, which are welded to the steel mesh of the front retaining section 11 and the rear stabilizing section 12. The steel mesh is a single layer of steel bars.

[0034] The upper surface of the planting soil 6 is flush with or slightly lower than the opening of the planting trough 4.

[0035] 7. Plant flowers and grasses on the planting soil; 9. Plant a row of climbing plants on the inner side of the slope foot; 8. Plant two rows of shrubs on the outer side of the platform; 10. Plant a row of trees on the inner side of the platform; The selected flower and grass species are cosmos, sea buckthorn, Nepalese yellow privet, Kentucky bluegrass, wormwood, and alfalfa. Use plump, high-quality seeds, mixed in a 1:1:1:1:1:1 ratio, and sow at a density of 120 kg / hm². 2 Shrubs should be planted alternately with red-leaved barberry and rhododendron at a ratio of 1:1, with a spacing of 1.0m between plants and rows, using robust 2-3 year old seedlings. Trees should be planted alternately with alpine pine and peach trees at a ratio of 1:1, with a spacing of 2.0m between plants, a diameter at breast height of 2-5cm, and robust 2-3 year old seedlings. The selected flowers, shrubs, climbing plants, and trees are all native vegetation of the Qinghai-Tibet Plateau, resulting in a good greening effect.

[0036] The above specific embodiments are used to explain and illustrate the present invention, and are only preferred embodiments of the present invention, not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made to the present invention within the spirit and scope of the claims shall fall within the protection scope of the present invention.

Claims

1. A rapid greening structure suitable for high-altitude spoil heaps, comprising a protective structure at the toe of the spoil heap, characterized in that: The protective structure has an outer retaining wall on the river-facing side, which is made of precast reinforced concrete components spliced ​​together from left to right. The outer retaining wall and the top surface of the protective structure form a planting trough. The inner surface of the planting trough is covered with a composite geomembrane, and planting soil is filled on the composite geomembrane. Flowers, climbing plants, shrubs and trees are planted in the planting soil. The precast reinforced concrete component includes a front retaining section, a rear stabilizing section, and an intermediate connecting section for connecting the two; the front retaining section, the rear stabilizing section, and the intermediate connecting section are in the shape of an I-beam, and the front retaining section is thin-walled; the front retaining section is located on the lower side of the slope, and the rear stabilizing section is located on the upper side of the slope; at least the rear stabilizing section is embedded in the planting soil.

2. The rapid greening structure applicable to plateau slag heaps according to claim 1, characterized in that: drip irrigation pipes are buried in the planting soil.

3. The rapid greening structure applicable to plateau slag heaps according to claim 1, characterized in that: a hoisting ring is pre-embedded at the upper edge of the front retaining section of the precast reinforced concrete component, and the pre-embedded hoisting ring is welded to the steel mesh of the front retaining section.

4. The rapid greening structure applicable to plateau slag heaps according to claim 1, characterized in that: a hoisting ring is pre-embedded at the upper edge of the rear wall stabilization section of the precast reinforced concrete component, and the pre-embedded hoisting ring is welded to the steel mesh of the rear wall stabilization section.

5. The rapid greening structure applicable to plateau slag heaps according to claim 1, characterized in that: the upper edge of the front retaining section and the upper edge of the rear stabilizing section of the precast reinforced concrete component are pre-embedded with lifting rings, and the pre-embedded lifting rings are welded to the steel mesh of the front retaining section and the rear stabilizing section.

6. The rapid greening structure applicable to plateau slag heaps according to claim 3, 4 or 5, characterized in that: the steel mesh is a single layer of steel bars.

7. The rapid greening structure applicable to plateau slag heaps according to claim 1, characterized in that: the upper surface of the planting soil is flush with or slightly lower than the opening of the planting trough.

8. The rapid greening structure applicable to plateau slag heaps according to claim 1, characterized in that: when planting flowers, grasses and shrubs in the planting soil, the soil covering thickness is 40cm; When planting trees in the planting soil, the soil covering thickness should be 140cm.

9. The rapid greening structure applicable to plateau slag heaps according to claim 1, characterized in that: the selected flower and grass species are Gesang flower, sea buckthorn, Nepal yellow privet, Kentucky bluegrass, wormwood, and alfalfa; the flower and grass species are plump and high-quality seeds; the mixing ratio is 1:1:1:1:1:1; and the sowing density is 120 kg / hm². 2 ; Shrubs should be selected and interplanted with red barberry and rhododendron in a 1:1 ratio, with a plant spacing of 1.0m, and 2-3 year old strong seedlings; For the trees, choose alpine pine and peach trees for interplanting, with a planting ratio of 1:1, a spacing of 2.0m between trees, a diameter at breast height of 2-5cm, and strong seedlings that are 2-3 years old.

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