CN114457855A - Sunken horizontal seepage-proofing and perpendicular seepage-proofing integrated configuration - Google Patents
Sunken horizontal seepage-proofing and perpendicular seepage-proofing integrated configuration Download PDFInfo
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- CN114457855A CN114457855A CN202210129142.2A CN202210129142A CN114457855A CN 114457855 A CN114457855 A CN 114457855A CN 202210129142 A CN202210129142 A CN 202210129142A CN 114457855 A CN114457855 A CN 114457855A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/002—Ground foundation measures for protecting the soil or subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/004—Sealing liners
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
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Abstract
The invention discloses a sinking type horizontal seepage-proofing and vertical seepage-proofing combined structure which is formed by combining a vertical seepage-proofing wall (10), a composite seepage-proofing engineering structure (12), a horizontal seepage-proofing system and a sinking type horizontal seepage-proofing filtering drainage system; the composite seepage-proofing engineering structure (12) is composed of a vertical seepage-proofing inner wall (12-1), an inner wall covering plate (12-3) which is positioned at the upper part of the vertical seepage-proofing inner wall and extends to one side of a solid waste storage yard/polluted site, a vertical seepage-proofing outer wall (12-2) and an outer wall covering plate (12-4) which is positioned at the upper part of the vertical seepage-proofing outer wall and extends outwards; the horizontal seepage-proofing system is composed of a base layer (5), a seepage-proofing material protection layer (4), a horizontal seepage-proofing layer (3), an ecological base layer (2) and an ecological layer (1) from bottom to top. The invention meets the technological requirements of horizontal seepage prevention and vertical seepage prevention, realizes the greening and beautifying of the solid waste storage yard/polluted site, has smooth drainage and excellent drainage water quality, not only saves clay resources and reduces the using amount of earthwork, but also has simple and convenient construction, low cost and good effect.
Description
Technical Field
The invention belongs to the technical field of seepage-proofing construction of pollution sources, and particularly relates to a combined seepage-proofing structure with horizontal seepage-proofing and vertical seepage-proofing functions, which is particularly suitable for pollution control and ecological restoration of solid waste storage yards and industrial polluted sites.
Background
For historical reasons, a large amount of solid wastes, such as steel slag of steel mills, copper smelting waste slag, stripped waste rock (soil) generated in mining, and the like, are generated in the generation process of many enterprises, the large amount of solid wastes are piled for a long time to form solid waste piling places such as a dressing and smelting slag yard, a waste dump and the like, and the solid wastes are piled for a long time in the open air. During migration, the harmful components are subjected to adsorption by soil and other uses. Generally, as the adsorption capacity and adsorption capacity of soil are large, harmful ingredients are accumulated in a soil solid phase to different degrees along with the migration of percolating water, so that the soil ingredients and the structure are changed, plants grow in the soil, the plants are indirectly polluted, and some lands even cannot be cultivated. Waste piled in the open air is carried into a water body by surface runoff or fine particles floating in the air fall into a surface water system through rainfall flushing sedimentation, condensed rain sedimentation, gravity sedimentation and dry sedimentation, and the water body can dissolve harmful components and poison organisms, so that the water body is seriously anoxic, eutrophicated, and the fish die and the like.
Currently, the main methods for disposing of these solid wastes are: the method comprises the steps of filling in different places, piling in place and curing in place, and the adopted seepage-proofing method comprises horizontal seepage-proofing and vertical seepage-proofing.
The remote landfill is feasible under the conditions of environmental protection, safety and reliability for only a small amount of solid waste; for historical reasons, on-site management is also a practical approach for large quantities of existing solid waste.
The horizontal seepage prevention is to establish an impervious layer in the horizontal direction on the surface of the solid waste storage yard to prevent rainwater or external fresh water from entering the solid waste storage yard below, so as to prevent the pollution of the solid waste to generate new waste water to pollute the underground water. Currently, the landfill horizontal seepage-proofing methods in China mainly include four methods: a clay anti-seepage layer method; ② a bentonite anti-seepage layer method; ③ high-density polyethylene (HDBE) anti-seepage layer method; fourthly, a geosynthetic bentonite pad (GCL) and HDPE double-layer impervious layer method.
The vertical seepage prevention is to establish a vertical barrier (a seepage wall) around a solid waste storage yard or in a certain depth range of the downstream of underground water flow to prevent polluted water from diffusing and migrating to other water areas to pollute the surrounding water areas.
At present, vertical seepage-proofing and horizontal seepage-proofing treatment of waste water generated by solid waste are respectively treated, and the construction method adopting vertical seepage-proofing and horizontal seepage-proofing measures respectively has long construction period, complex construction and high cost. How to combine the horizontal seepage prevention with the vertical seepage prevention and construct a combined structure system of the horizontal seepage prevention and the vertical seepage prevention together has important significance for saving clay resources, reducing the using amount of earthwork, simplifying construction procedures and improving seepage prevention effect.
Disclosure of Invention
The invention aims to solve the problems of poor seepage-proofing effect, long construction period, complex construction process and high cost in the prior art, and provides a sinking type horizontal seepage-proofing and vertical seepage-proofing combined structure which can save clay resources, reduce the using amount of earthwork, is simple and convenient to construct, has low construction cost and good seepage-proofing effect.
In order to realize the purpose, the invention discloses a sinking type horizontal seepage-proofing and vertical seepage-proofing combined structure which is implemented by adopting the following technical scheme:
the invention relates to a sinking type horizontal seepage-proofing and vertical seepage-proofing combined structure, which is formed by combining a vertical seepage-proofing wall, a composite seepage-proofing engineering structure, a horizontal seepage-proofing system and a sinking type horizontal seepage-proofing filtering drainage system, wherein the sinking type horizontal seepage-proofing and vertical seepage-proofing combined structure comprises the following components in parts by weight:
the composite seepage-proofing engineering structure consists of a vertical seepage-proofing inner wall, an inner wall covering plate, a vertical seepage-proofing outer wall and an outer wall covering plate, wherein the upper part of the vertical seepage-proofing inner wall extends to one side of the solid waste storage yard/polluted site; the vertical impervious wall is positioned at the lower part between the vertical impervious inner wall and the vertical impervious outer wall, a vertical impervious combined layer is arranged at the bottom between the vertical impervious inner wall and the vertical impervious outer wall, and a concave space formed by the vertical impervious inner wall, the vertical impervious outer wall and the vertical impervious combined layer is a horizontal impervious rainwater collection and drainage space; the horizontal seepage-proofing system is positioned on the original base layer on one side of the vertical seepage-proofing inner wall close to the solid waste storage yard/polluted site, and the horizontal seepage-proofing system is formed by combining a base layer, a seepage-proofing material protection layer, a horizontal seepage-proofing layer, an ecological base layer and an ecological layer from bottom to top; drainage holes are arranged in the vertical anti-seepage inner wall at intervals, a reverse filtering layer and a filtering layer are sequentially arranged at the inlet of the drainage hole, the outlet of the drainage hole is discharged to the horizontal anti-seepage rainwater collecting and discharging space, and the reverse filtering layer, the drainage hole and the horizontal anti-seepage rainwater collecting and discharging space jointly form a sinking horizontal anti-seepage filtering drainage system.
The invention further comprises a horizontal cover plate, wherein the horizontal cover plate is made of concrete, the horizontal cover plate covers the vertical anti-seepage inner wall and the vertical anti-seepage outer wall, and the horizontal cover plate is provided with a grate hole.
In order to meet the requirement of drainage water quality, the reverse filter layer adopts a circular reverse filter layer, graded broken stones are contained in the circular reverse filter layer, and geotextile is coated outside the circular reverse filter layer; the filtering layer adopts coarse sand and is arranged around the circular reverse filtering layer, and the coarse sand is more than 85% of the total weight of particles with the particle size of more than 0.075 mm.
By combining the anti-seepage effect and the construction cost and through test research results and comparison, the thickness B1 of the vertical anti-seepage inner wall and the vertical anti-seepage outer wall is 150-200 mm, the thickness B2 of the vertical anti-seepage wall is 600-800 mm, the thickness H3 of the inner wall covering plate and the outer wall covering plate is 150-200 mm, and the height H4 of the vertical anti-seepage inner wall and the vertical anti-seepage outer wall is 1300-1800 mm; the thickness of the base layer is 400-600 mm, and the thickness of each layer compacted in a layering mode is not more than 200 mm; the thickness of the impermeable material protective layer is 150-250 mm; the diameter of the circular anti-filtering layer is within the range of 360-450 mm; the thickness of the filter layer is 420-560 mm; the thickness of the ecological base layer is 420-560 mm.
Furthermore, the upper and lower heights of the circular reverse filter layer also need to meet the requirement that the upper and lower heights of the circular reverse filter layer are respectively not less than 80mm below the inlet of the drain hole and not less than 80mm above the inlet of the drain hole.
Furthermore, the vertical impervious wall adopts plain concrete or a triaxial cement mixing pile or a high-pressure jet grouting pile.
Comprehensively considering horizontal seepage-proofing effect, material and construction cost and green covering effect and further improving ecological environment, wherein the foundation layer adopts miscellaneous filling soil and is compacted in a layered manner; the impervious material protective layer adopts plain soil, and is leveled and compacted, so that the plain soil cannot contain impurities such as organic matters, broken stones, sawdust and the like; the horizontal impermeable layer adopts a high-density polyethylene HDPE geotechnical impermeable film, and a geotextile protective layer is added; the vertical anti-seepage binding layer is made of plain concrete; the ecological base layer adopts planting soil, plants are planted on the planting soil to form an ecological layer, and plant varieties are determined according to the requirements of regional ecological environment protection and greening.
Furthermore, the horizontal impermeable layer is preferably a high density polyethylene HDPE geomembrane with the thickness of 1.5 mm.
After the technical scheme is adopted, the sinking type horizontal seepage-proofing and vertical seepage-proofing combined structure has the following positive effects:
(1) the combined seepage-proofing structure consisting of the vertical seepage-proofing wall, the composite seepage-proofing engineering structure, the horizontal seepage-proofing system and the filtering drainage system is adopted, so that the combined seepage-proofing structure simultaneously meets the technological requirements of horizontal seepage proofing and vertical seepage proofing, realizes the perfect combination of horizontal seepage proofing and vertical seepage proofing, and effectively solves the problem that natural rainwater or other ground water enters underground soil through a solid waste storage yard/polluted site.
(2) The horizontal seepage-proofing system is composed of a base layer, a seepage-proofing material protection layer, a horizontal seepage-proofing layer, an ecological base layer and an ecological layer from bottom to top, can meet the requirement of horizontal seepage proofing of the solid waste storage yard/polluted site, restores the ecology of the solid waste storage yard/polluted site and realizes greening and beautifying of the solid waste storage yard/polluted site.
(3) The vertical seepage-proofing system is formed by combining a vertical seepage-proofing wall positioned at the bottom, a vertical seepage-proofing inner wall and a vertical seepage-proofing outer wall double-layer structure positioned at the upper part and a vertical seepage-proofing binding layer, and has good vertical seepage-proofing effect and convenient construction.
(4) The reverse filtering layer, the drain hole and the horizontal seepage-proof rainwater collecting and discharging space form a filtering and draining system together, so that draining is smooth, and draining water quality is excellent.
(5) The invention adopts sinking type horizontal seepage prevention, namely: rainwater permeates to the horizontal impermeable layer through the ecological layer and the ecological base layer, then flows downwards along the filter layer, the inverted filter layer and the drainage hole through the horizontal impermeable layer to the horizontal impermeable rainwater collecting and discharging space to be discharged; can effectively prevent the original solid waste and the sewage generated by the solid waste from polluting other underground soil or water, not only saves clay resources and reduces the using amount of earthwork, but also has simple and convenient construction, low cost and good effect.
(6) The application range is wide, the device is suitable for solid waste piles in different shapes, such as ground, pits and mountain depressions, and is particularly suitable for the condition that the ground is required to be smooth.
(7) Compared with the method of respectively adopting horizontal seepage prevention and vertical seepage prevention, the method can save 30% of civil engineering cost and effectively save land use area, thereby saving land resources.
Drawings
FIG. 1 is a cross-sectional view of a sinking type horizontal seepage-proofing and vertical seepage-proofing combined structure of the invention;
FIG. 2 is a cross-sectional view of a sinking type horizontal seepage-proofing and vertical seepage-proofing combined structure used in a solid waste storage yard.
Reference numerals: 1-ecological layer; 2-ecological base course; 3-horizontal impermeable layer; 4-a barrier material protective layer; 5-a base layer; 6-original base layer (namely, surface layer of solid waste storage yard/polluted site); 7-a drain hole; 8-an inverted filter layer; 9-a filter layer; 10-vertical impervious wall; 11-a vertical impermeable bonding layer; 12-composite seepage-proofing engineering structure; 12-1-vertical impervious inner wall; 12-2-vertical impermeable exterior walls; 12-3-interior wall cladding panel; 12-4-exterior wall cladding; 13-horizontal seepage-proof rainwater collection and drainage space; 14 horizontal cover plate.
Detailed Description
For further description of the present invention, a sinking-type horizontal anti-seepage and vertical anti-seepage combined structure of the present invention will be described in further detail with reference to the accompanying drawings.
As shown in the cross-sectional view of the sinking horizontal anti-seepage and vertical anti-seepage combined structure of the invention shown in fig. 1 and combined with fig. 2, the sinking horizontal anti-seepage and vertical anti-seepage combined structure of the invention is formed by combining a vertical anti-seepage wall 10, a composite anti-seepage engineering structure 12, a horizontal anti-seepage system, a sinking horizontal anti-seepage filtering and drainage system and a horizontal cover plate 14; the composite seepage-proofing engineering structure 12 consists of a vertical seepage-proofing inner wall 12-1, an inner wall covering plate 12-3 which is positioned at the upper part of the vertical seepage-proofing inner wall and extends to one side of a solid waste storage yard/polluted site, a vertical seepage-proofing outer wall 12-2 and an outer wall covering plate 12-4 which is positioned at the upper part of the vertical seepage-proofing outer wall and extends outwards; the vertical impervious wall 10 is positioned at the lower part between the vertical impervious inner wall 12-1 and the vertical impervious outer wall 12-2, a vertical impervious combined layer 11 is arranged at the bottom between the vertical impervious inner wall 12-1 and the vertical impervious outer wall 12-2, and a concave space formed by the vertical impervious inner wall 12-1, the vertical impervious outer wall 12-2 and the vertical impervious combined layer 11 is a horizontal impervious rainwater collecting and discharging space 13; the horizontal cover plate 14 is a concrete cover plate, and the horizontal cover plate 14 covers the vertical impermeable inner wall 12-1 and the vertical impermeable outer wall 12-2; the horizontal seepage-proofing system is positioned on an original base layer 6 on one side of a vertical seepage-proofing inner wall 12-1 close to the solid waste storage yard/polluted site, and the horizontal seepage-proofing system is composed of a base layer 5, a seepage-proofing material protective layer 4, a horizontal seepage-proofing layer 3, an ecological base layer 2 and an ecological layer 1 from bottom to top; drainage holes 7 are arranged in the vertical impermeable inner wall 12-1 at intervals, an inverted filter layer 8 and a filter layer 9 are sequentially arranged at the inlet of the drainage hole 7, the outlet of the drainage hole 7 is discharged to a horizontal impermeable rainwater collecting and discharging space 13, the inverted filter layer 8, the filter layer 9, the drainage hole 7 and the horizontal impermeable rainwater collecting and discharging space 13 jointly form a sinking horizontal impermeable filtering and discharging system, and the size of the space of the horizontal impermeable rainwater collecting and discharging space 13 is determined according to regional environment improvement and rainwater collecting and discharging calculation.
The technical parameters of the combined impermeable structure adopted in the embodiment are as follows:
the thickness B1 of the vertical impervious inner wall 12-1 and the vertical impervious outer wall 12-2 is 150-200 mm, the thickness B2 of the vertical impervious wall 11 is 600-800 mm, the thickness H3 of the inner wall covering plate 12-3 and the outer wall covering plate 12-4 is 150-200 mm, and the height H4 of the vertical impervious inner wall 12-1 and the vertical impervious outer wall 12-2 is 1300-1800 mm; the thickness of the base layer 5 is 500mm, and the thickness of each layer compacted in a layering way is not more than 200 mm; the thickness of the impervious material protection layer 4 is 200 mm; the diameter of the circular anti-filtering layer is in the range of 400 mm; the thickness of the filter layer 9 is 500 mm; the thickness of the ecological base layer 2 is 500 mm; the horizontal impermeable layer 3 is a high density polyethylene HDPE earth impermeable film with the thickness of 1.5 mm; the upper and lower heights of the circular reverse filter layer also meet the requirement that the circular reverse filter layer is respectively positioned 100mm below the inlet of the drain hole and 100mm above the inlet of the drain hole.
The construction method is as follows;
1) defining a vertical seepage-proofing line at the outer edge of the solid waste storage yard/polluted site needing horizontal seepage proofing and vertical seepage proofing, and leveling the original base layer 6 of the solid waste storage yard/polluted site according to the design elevation and gradient requirements;
2) constructing a composite anti-seepage engineering structure 12 according to the position of the vertical anti-seepage line; the composite seepage-proofing engineering structure 12 is formed by adopting a reinforced concrete structure, erecting a formwork, binding reinforcing steel bars and then pouring concrete; the drain hole 7 and the vertical impervious inner wall 12-1 are constructed synchronously; the composite seepage-proofing engineering structure 12 is of a reinforced concrete structure, and the diameter of a steel bar in concrete is 14mm, and the distance between the steel bars is 200 mm; the drain holes 7 are pre-buried phi 100 plastic steel pipes with the spacing of 2000mm, and the vertical positions are determined according to the design;
3) after the composite seepage-proofing engineering structure 12 is stable and accepted, constructing the vertical seepage-proofing wall 10, wherein the vertical seepage-proofing wall 10 adopts C15 plain concrete or a triaxial cement mixing pile or a high-pressure jet grouting pile, and the permeability coefficient of the vertical seepage-proofing wall 10 is less than 1x10-7(ii) a The depth of the vertical diaphragm wall 10 needs to be less than 1x10-7The thickness of the impermeable soil layer with the permeability coefficient less than 1x10-7 is not less than 1000 mm;
4) constructing a foundation layer 5 and an impermeable material protection layer 4: the foundation layer 5 adopts miscellaneous filling, is compacted in layers, and has the compacted density of 0.95; the impervious material protective layer 4 adopts plain soil, and is leveled and compacted;
5) constructing a reverse filter layer 8, wherein the reverse filter layer 8 is a circular reverse filter layer, contains graded broken stones and is externally coated with geotextile;
6) constructing a filter layer 9, wherein the filter layer 9 is made of coarse sand and is distributed around the circular reverse filter layer;
7) laying a horizontal impermeable layer 3, wherein the horizontal impermeable layer 3 adopts a high-density polyethylene HDPE geotechnical impermeable film, and a geotechnical cloth protective layer is added;
8) constructing an ecological base layer 2, wherein the ecological base layer 2 adopts planting soil, plants are planted on the planting soil to form an ecological layer 1, and plant varieties are determined according to the requirements of regional ecological environment protection and greening;
9) constructing a vertical anti-seepage combination layer 11, wherein the vertical anti-seepage combination layer 11 is made of plain concrete;
10) and finishing the manufacturing and installation of the horizontal cover plate 14.
Claims (8)
1. A sinking horizontal seepage-proofing and vertical seepage-proofing combined structure is characterized by being formed by combining a vertical seepage-proofing wall (10), a composite seepage-proofing engineering structure (12), a horizontal seepage-proofing system and a sinking horizontal seepage-proofing filtering drainage system:
the composite seepage-proofing engineering structure (12) is composed of a vertical seepage-proofing inner wall (12-1), an inner wall covering plate (12-3) which is positioned at the upper part of the inner wall and extends to one side of a solid waste storage yard/polluted site, a vertical seepage-proofing outer wall (12-2) and an outer wall covering plate (12-4) which is positioned at the upper part of the outer wall and extends outwards; the vertical impervious wall (10) is positioned at the lower part between the vertical impervious inner wall (12-1) and the vertical impervious outer wall (12-2), a vertical impervious binding layer (11) is arranged at the bottom between the vertical impervious inner wall (12-1) and the vertical impervious outer wall (12-2), and a concave space formed by the vertical impervious inner wall (12-1), the vertical impervious outer wall (12-2) and the vertical impervious binding layer (11) is a horizontal impervious rainwater collection and drainage space (13); the horizontal seepage-proofing system is positioned on an original base layer (6) on one side of a vertical seepage-proofing inner wall (12-1) close to the solid waste storage yard/polluted site, and the horizontal seepage-proofing system is formed by combining a base layer (5), a seepage-proofing material protective layer (4), a horizontal seepage-proofing layer (3), an ecological base layer (2) and an ecological layer (1) from bottom to top; drainage holes (7) are arranged in the vertical anti-seepage inner wall (12-1) at intervals, a reverse filtering layer (8) and a filtering layer (9) are sequentially arranged at the inlet of the drainage hole (7), the outlet of the drainage hole (7) is discharged to the horizontal anti-seepage rainwater collecting and discharging space (13), and the reverse filtering layer (8), the filtering layer (9), the drainage hole (7) and the horizontal anti-seepage rainwater collecting and discharging space (13) jointly form a sunken horizontal anti-seepage filtering drainage system.
2. The sinking horizontal seepage-proofing and vertical seepage-proofing combined structure of claim 1, wherein: the anti-seepage concrete building block further comprises a horizontal cover plate (14), wherein the horizontal cover plate (14) is made of concrete, and the horizontal cover plate (14) covers the vertical anti-seepage inner wall (12-1) and the vertical anti-seepage outer wall (12-2).
3. The sinking horizontal seepage-proofing and vertical seepage-proofing combined structure of claim 2, wherein: the reverse filter layer (8) adopts a circular reverse filter layer, contains graded broken stones and is externally coated with geotextile; the filtering layer (9) adopts coarse sand and is arranged around the circular anti-filtering layer.
4. A sunken horizontal seepage-proofing and vertical seepage-proofing combined structure according to claim 3, wherein: the thickness B1 of the vertical impervious inner wall (12-1) and the vertical impervious outer wall (12-2) is 150-200 mm, the thickness B2 of the vertical impervious wall (11) is 600-800 mm, the thickness H3 of the inner wall covering plate (12-3) and the outer wall covering plate (12-4) is 150-200 mm, and the height H4 of the vertical impervious inner wall (12-1) and the vertical impervious outer wall (12-2) is 1300-1800 mm; the thickness of the base layer (5) is 400-600 mm, and the thickness of each layer of the layered and compacted layer is not more than 200 mm; the thickness of the impermeable material protection layer (4) is 150-250 mm; the diameter of the circular anti-filtering layer is within the range of 360-450 mm; the thickness of the filter layer (9) is 420-560 mm; the thickness of the ecological base layer (2) is 420-560 mm.
5. The sunk horizontal seepage-proofing and vertical seepage-proofing combined structure as claimed in claim 4, wherein: the upper and lower heights of the circular reverse filter layer are required to be respectively not less than 80mm below the inlet of the drain hole and not less than 80mm above the inlet of the drain hole.
6. A sinking horizontal seepage-proofing and vertical seepage-proofing combination structure as claimed in claim 1, 2, 3, 4 or 5, wherein: the vertical impervious wall (10) adopts plain concrete or a triaxial cement mixing pile or a high-pressure jet grouting pile.
7. The sinking type horizontal seepage-proofing and vertical seepage-proofing combined structure of claim 6, wherein: the base layer (5) adopts miscellaneous filling soil, and the impermeable material protective layer (4) adopts plain soil; the horizontal impermeable layer (3) adopts a high-density polyethylene HDPE geotechnical impermeable film, and is provided with a geotextile protective layer; the vertical impermeable bonding layer (11) is made of plain concrete; the ecological base layer (2) adopts planting soil, and plants are planted on the planting soil to form the ecological layer (1).
8. The sinking horizontal seepage-proofing and vertical seepage-proofing combined structure of claim 7, wherein: the horizontal impermeable layer (3) is a high-density polyethylene HDPE geotechnical impermeable film with the thickness of 1.5 mm.
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| CN116623710A (en) * | 2023-06-16 | 2023-08-22 | 中核第四研究设计工程有限公司 | Concomitant radioactive waste residue disposal warehouse |
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| CN116623710A (en) * | 2023-06-16 | 2023-08-22 | 中核第四研究设计工程有限公司 | Concomitant radioactive waste residue disposal warehouse |
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