CN216017668U - Greening system for soil ecological restoration area - Google Patents
Greening system for soil ecological restoration area Download PDFInfo
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- CN216017668U CN216017668U CN202122301191.3U CN202122301191U CN216017668U CN 216017668 U CN216017668 U CN 216017668U CN 202122301191 U CN202122301191 U CN 202122301191U CN 216017668 U CN216017668 U CN 216017668U
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Abstract
The utility model discloses a greening system for a soil ecological restoration area, which comprises a landfill pit slot, a polluted soil layer, a filling clean soil layer and a slope-piling clean soil layer; the landfill groove is excavated in a planned restoration area, the polluted soil is buried in the landfill groove to form a polluted soil layer, and a separation and seepage prevention structure is arranged between the polluted soil layer and the inner wall of the landfill groove; the filling clean soil layer is laid above the polluted soil layer, and the bottom and the side part of the filling clean soil layer are respectively provided with a separation and seepage-proofing structure for separating from the polluted soil layer; the upper surface of the filling and leveling soil layer is flush with the terrace of the planned restoration area; the slope piling clean soil layer is arranged on the upper part of the filling clean soil layer, and greening vegetation is planted on the surface of the slope piling clean soil layer. The utility model has the beneficial effects that: the restored polluted soil is filled to the lower part of a planned green belt in a field in a blocking filling mode, so that heavy metal in the soil can be effectively blocked from infiltrating into underground water, and the heavy metal pollutants are prevented from being exposed through the surface layer.
Description
Technical Field
The utility model belongs to the technical field of greening, and particularly relates to a greening system for a soil ecological restoration area.
Background
With the development of economy and the implementation of urbanization, a large number of industrial enterprises move away from urban areas, original industrial land is gradually developed into residential land or public building land, and the land property changes. Some industrial enterprise original sites belong to polluted sites through site environment investigation and risk assessment, and the sites can be put into use after the polluted sites are treated and repaired and the environmental protection requirements are met through monitoring.
According to the requirements of relevant national policies, in order to reduce the environmental problems possibly brought by the land in the development and utilization process and ensure the health and safety of human bodies, the soil of a polluted site needs to be repaired and treated; meanwhile, people hope to restore the original vegetation in situ and build a new green land for beautification, so as to form a benign development zone and finish comprehensive remediation. Under the requirement, the establishment of a greening system of the soil ecological restoration area has practical significance.
Disclosure of Invention
The utility model aims to provide a safe and reliable greening system for a soil ecological restoration area, aiming at the defects of the prior art.
The technical scheme adopted by the utility model is as follows: a greening system for a soil ecological restoration area comprises a landfill pit groove, a polluted soil layer, a filling clean soil layer and a slope-piling clean soil layer; the landfill groove is excavated in a planned restoration area, the polluted soil is buried in the landfill groove to form a polluted soil layer, and a separation and seepage prevention structure is arranged between the polluted soil layer and the inner wall of the landfill groove; the filling clean soil layer is laid above the polluted soil layer, and the bottom and the side part of the filling clean soil layer are respectively provided with a separation and seepage-proofing structure for separating from the polluted soil layer; the upper surface of the filling and leveling soil layer is flush with the terrace of the planned restoration area; the slope piling clean soil layer is arranged on the upper part of the filling clean soil layer, and greening vegetation is planted on the surface of the slope piling clean soil layer.
According to the scheme, the separation and seepage-proofing structure at the upper part of the polluted soil layer is fixedly connected with the separation and seepage-proofing structures at the bottom and the side parts, and the separation and seepage-proofing structure encloses the polluted soil layer in a sealing environment.
According to the scheme, the cross section of the landfill pit groove is of an inverted trapezoidal structure, and the upper opening and the lower opening of the landfill pit groove are large and small.
According to the scheme, the barrier and seepage-proofing structure is a sandwich structure and comprises a lower protective layer at the bottom, a barrier and seepage-proofing layer in the middle and an upper protective layer at the top; the lower protective layer and the upper protective layer are both made of filament geotextile; the isolation impervious layer is made of geomembrane.
According to the scheme, the isolation and seepage-proofing layer at the bottom of the landfill groove is made of a smooth HDPE geomembrane, and the isolation and seepage-proofing layer at the side part of the landfill groove is made of a rough HDPE geomembrane.
According to the scheme, the thickness of the filling clean soil layer exceeds 1 m.
According to the scheme, the upper surface of the polluted soil layer is smooth.
According to the scheme, the two sides of the filling clean soil layer exceed the polluted soil layer.
The utility model has the beneficial effects that: the greening system disclosed by the utility model has the advantages that the repaired polluted soil is filled under a planned greening belt in a field in a blocking filling mode, so that heavy metal in the soil can be effectively blocked from infiltrating into underground water, the heavy metal pollutants are prevented from being exposed through the surface layer, the risks to the environment and the human health are avoided, and the normal growth of public green plants is ensured, so that the greening system is safe and reliable; can restore the original vegetation in situ, build a new green land, beautify, form a benign development zone and finish comprehensive treatment.
Drawings
FIG. 1 is a general schematic diagram of one embodiment of the present invention.
Fig. 2 is a schematic view of the contaminated soil layer and the lower structure thereof in this embodiment.
Wherein: 1-greening vegetation, 2-trees, 3-slope stacking soil cleaning layer, 4-filling pit groove soil cleaning, 5-terrace, 6-barrier seepage-proofing structure, 7-repaired polluted soil, 8-on-film protective layer, 9-barrier seepage-proofing layer, 10-under-film protective layer and 11-natural foundation layer.
Detailed Description
For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
The greening system for the soil ecological restoration area shown in fig. 1 comprises a landfill groove, a polluted soil layer 7, a filling clean soil layer 4 and a slope-piling clean soil layer 3; the landfill groove is excavated in a planned restoration area, the polluted soil is buried in the landfill groove to form a polluted soil layer 7, and a separation and seepage-proofing structure 6 is arranged between the polluted soil layer 7 and the inner wall of the landfill groove; the filling clean soil layer 4 is laid above the polluted soil layer 7, and the bottom and the side part of the filling clean soil layer 4 are respectively provided with a separation anti-seepage structure 6 for separating from the polluted soil layer 7; the upper surface of the filling and leveling soil layer 4 is flush with the terrace 5 of the planned restoration area; the slope piling clean soil layer 3 is arranged at the upper part of the filling clean soil layer 4, and greening vegetation 1 is planted on the surface of the slope piling clean soil layer 3. In the utility model, the upper surface of the polluted soil layer 7 is smooth; the separation seepage-proofing structure 6 on the upper part of the polluted soil layer 7 is fixedly connected with the separation seepage-proofing structures 6 on the bottom and the side parts, and the polluted soil layer 7 is enclosed in a sealing environment by the separation seepage-proofing structure 6. In this embodiment, the contaminated soil must be repaired and inspected to be acceptable for landfill.
Preferably, the section of the landfill pit groove is of an inverted trapezoidal structure, and the upper opening and the lower opening of the landfill pit groove are large and small; the two sides of the filling clean soil layer 4 exceed the polluted soil layer 7.
Preferably, the barrier 6 is a sandwich structure, including a lower film protection of the bottomLayer 10, a barrier layer in the middle and a protective layer 8 on the membrane on top; 200g/m is adopted for the lower protective layer 10 and the upper protective layer 82Manufacturing the filament geotextile; the isolation and seepage-proofing layer is made of HDPE geomembrane, wherein the isolation and seepage-proofing layer at the bottom of the landfill groove is made of smooth HDPE geomembrane with the thickness of 1mm, and the isolation and seepage-proofing layer at the side part of the landfill groove is made of single rough HDPE geomembrane with the thickness of 1 mm.
Preferably, the thickness of the fill level soil layer 4 exceeds 1 m.
In this embodiment, as shown in fig. 2, the lower part of the contaminated soil layer 7 is sequentially provided with an upper membrane protective layer 8, an isolation impermeable layer, a lower membrane protective layer 10 and a natural foundation layer 11; the upper part of the polluted soil layer 7 is sequentially provided with a lower protective layer 10, an isolation impermeable layer, an upper protective layer 8, a filling clean soil layer 4, a slope-piling clean soil layer 3 and greening vegetation 1.
The construction process of the embodiment is as follows: planning a green belt area in a field, excavating a landfill pit slot, and tamping and leveling the excavation; laying a lower protective layer 10 (adopting filament geotextile 200 g/m) from bottom to top along the side slope and the bottom of the landfill pit groove in sequence2) A separation and permeation-proof layer and an upper protective layer 8 (200 g/m is adopted)2Geotextile) to form an effective barrier and seepage-proofing structure 6; burying the repaired and qualified contaminated soil to designed elevation, leveling the surface of the contaminated soil layer 7, and uniformly paving a lower protective layer 10 (adopting filament geotextile of 200 g/m)2) Isolating impermeable material, protective layer 8 on film (200 g/m is adopted)2Geotextile) to form a barrier seepage-proofing structure 6, and connecting and fixing the barrier seepage-proofing structure 6 at the upper part of the polluted soil layer 7 with the barrier seepage-proofing structures 6 at the bottom and the side parts; covering and filling the pit groove with clean soil, wherein the thickness of a filling and filling clean soil layer 4 is 1 m; the slope-piling clean soil layer 3 is formed by adopting clean soil to pile a slope, and greening vegetation 1 including greening turf, trees 2 and the like is planted on the slope-piling clean soil layer 3.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications can be made to the technical solutions described in the above-mentioned embodiments, or equivalent substitutions of some technical features, but any modifications, equivalents, improvements and the like within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (8)
1. A greening system for a soil ecological restoration area is characterized by comprising a landfill pit groove, a polluted soil layer, a filling clean soil layer and a slope-piling clean soil layer; the landfill groove is excavated in a planned restoration area, the polluted soil is buried in the landfill groove to form a polluted soil layer, and a separation and seepage prevention structure is arranged between the polluted soil layer and the inner wall of the landfill groove; the filling clean soil layer is laid above the polluted soil layer, and the bottom and the side part of the filling clean soil layer are respectively provided with a separation and seepage-proofing structure for separating from the polluted soil layer; the upper surface of the filling and leveling soil layer is flush with the terrace of the planned restoration area; the slope piling clean soil layer is arranged on the upper part of the filling clean soil layer, and greening vegetation is planted on the surface of the slope piling clean soil layer.
2. A greening system for soil ecological restoration areas as claimed in claim 1, wherein the barrier seepage prevention structures on the upper part of the contaminated soil layer are fixedly connected with the barrier seepage prevention structures on the bottom and the side parts, and the barrier seepage prevention structures enclose the contaminated soil layer in a sealed environment.
3. A greening system for soil ecological restoration areas as claimed in claim 1, wherein the section of said landfill groove is an inverted trapezoid structure, the upper mouth of said landfill groove is large and the lower mouth is small.
4. The greening system for soil ecological restoration areas as claimed in claim 1, wherein the barrier and seepage-proofing structure is a sandwich structure comprising a bottom lower protective layer, a middle barrier and seepage-proofing layer and a top upper protective layer; the lower protective layer and the upper protective layer are both made of filament geotextile; the isolation impervious layer is made of geomembrane.
5. A greening system for soil restoration areas as claimed in claim 4, wherein the isolation and permeation-prevention layer at the bottom of the pit is made of smooth HDPE geomembrane, and the isolation and permeation-prevention layer at the side of the pit is made of rough HDPE geomembrane.
6. A soil bioremediation area greening system according to claim 4, wherein the fill layer has a thickness exceeding 1 m.
7. A greening system for soil ecology restoration areas according to claim 1, wherein the upper surface of the contaminated soil layer is leveled.
8. A greening system for soil remediation zones as claimed in claim 1 wherein the fill level soil layer extends beyond the contaminated soil layer on both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122301191.3U CN216017668U (en) | 2021-09-23 | 2021-09-23 | Greening system for soil ecological restoration area |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122301191.3U CN216017668U (en) | 2021-09-23 | 2021-09-23 | Greening system for soil ecological restoration area |
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| CN216017668U true CN216017668U (en) | 2022-03-15 |
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| CN202122301191.3U Active CN216017668U (en) | 2021-09-23 | 2021-09-23 | Greening system for soil ecological restoration area |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114733890A (en) * | 2022-03-17 | 2022-07-12 | 湖南新九方科技有限公司 | Underground water restoration and monitoring channel structure for landfill area |
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2021
- 2021-09-23 CN CN202122301191.3U patent/CN216017668U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114733890A (en) * | 2022-03-17 | 2022-07-12 | 湖南新九方科技有限公司 | Underground water restoration and monitoring channel structure for landfill area |
| CN114733890B (en) * | 2022-03-17 | 2024-04-09 | 湖南新九方科技有限公司 | Underground water restoration and monitoring channel structure in landfill area |
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