CN107816064B - A kind of sanitary filling field restoration of the ecosystem seepage control system and its construction method - Google Patents
A kind of sanitary filling field restoration of the ecosystem seepage control system and its construction method Download PDFInfo
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- CN107816064B CN107816064B CN201711039388.6A CN201711039388A CN107816064B CN 107816064 B CN107816064 B CN 107816064B CN 201711039388 A CN201711039388 A CN 201711039388A CN 107816064 B CN107816064 B CN 107816064B
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- 238000010276 construction Methods 0.000 title claims abstract description 18
- 230000004888 barrier function Effects 0.000 claims abstract description 87
- DNHVXYDGZKWYNU-UHFFFAOYSA-N lead;hydrate Chemical compound O.[Pb] DNHVXYDGZKWYNU-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000004576 sand Substances 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000004746 geotextile Substances 0.000 claims abstract description 23
- 239000002689 soil Substances 0.000 claims abstract description 22
- 239000004927 clay Substances 0.000 claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 17
- 238000005516 engineering process Methods 0.000 claims abstract description 12
- 239000002699 waste material Substances 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 237
- 238000009434 installation Methods 0.000 claims description 18
- 239000011241 protective layer Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 7
- 238000004873 anchoring Methods 0.000 claims description 6
- 239000011083 cement mortar Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 229910000278 bentonite Inorganic materials 0.000 claims description 5
- 239000000440 bentonite Substances 0.000 claims description 5
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical group O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 5
- 239000004575 stone Substances 0.000 claims description 5
- 230000008595 infiltration Effects 0.000 claims description 4
- 238000001764 infiltration Methods 0.000 claims description 4
- 241000196324 Embryophyta Species 0.000 claims description 3
- 238000007596 consolidation process Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 2
- 239000003673 groundwater Substances 0.000 abstract description 3
- 239000000149 chemical water pollutant Substances 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Classifications
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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
- E02D31/006—Sealing of existing landfills, e.g. using mining techniques
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
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- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Paleontology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Processing Of Solid Wastes (AREA)
- Revetment (AREA)
Abstract
The invention discloses a kind of sanitary filling field restoration of the ecosystem seepage control systems, including the base set gradually from the bottom up, underground water lead layer, first impervious barrier, loaded filter, percolate lead layer, second impervious barrier, bind soil layer and landfill waste layer, base includes the enrockment base set gradually from the bottom up, fine sand base and clay base, underground water discharge guiding pipe is equipped in underground water lead layer, first impervious barrier includes the anti-seepage geomembrane bag layer set gradually from the bottom up, antiseepage geonet compartment and anti-seepage geotextile layer, second impervious barrier includes barrier sheet layer, lower layer's anti-seepage geomembrane layer, back fill course and upper layer anti-seepage geomembrane layer.The construction method includes the following steps: (1) early-stage preparations；(2) Anti-seeping technology at landfill area bottom；(3) Anti-seeping technology of area's side slope is filled.Construction is simple of the present invention, environment protecting is good, and anti-seepage effect has obtained great promotion, effectively prevent landfill leachate to penetrate into underground and pollutes to soil and groundwater.
Description
Technical field
The present invention relates to a kind of sanitary filling field restoration of the ecosystem seepage control system and its construction methods.
Background technique
Seepage control system design is the important symbol that contemporary health landfill yard is different from traditional refuse landfill, seepage control system
Selection directly influences anti-seepage effect.Anti-seeping technology is carried out to landfill yard, is on the one hand to prevent leachate contamination water body nearby；Separately
On the one hand it is to prevent underground water from immersing landfill yard, causes the substantial increase of percolate water.The seepage control system of landfill yard is solid
The important component of body waste guaveyard prevents leachate contamination underground water and surface water for will completely cut off inside and outside landfill yard,
It can prevent over-the-counter water from entering in landfill area again simultaneously.Existing seepage control system is structurally reasonable, construction is simple, but seepage control system
Still there are certain leakage scenarios.
Summary of the invention
Present invention aims at a kind of sanitary filling field restoration of the ecosystem use is provided for deficiency of the prior art
The technical solution of seepage control system, construction is simple, environment protecting is good, and anti-seepage effect has obtained great promotion, effectively prevent rubbish
Leachate leaking pollutes soil and groundwater to underground.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme:
A kind of sanitary filling field restoration of the ecosystem seepage control system, it is characterised in that: including the base set gradually from the bottom up
Layer, underground water lead layer, the first impervious barrier, loaded filter, percolate lead layer, the second impervious barrier, bind soil layer and landfill waste
Layer, base includes the enrockment base, fine sand base and clay base set gradually from the bottom up, is equipped in underground water lead layer
Underground water discharge guiding pipe, the first impervious barrier include the anti-seepage geomembrane bag layer set gradually from the bottom up, antiseepage geonet compartment and
Anti-seepage geotextile layer is equipped with percolate discharge guiding pipe in percolate lead layer, and the second impervious barrier includes barrier sheet layer, lower layer's antiseepage
Geo membrane layers, back fill course and upper layer anti-seepage geomembrane layer.
Further, filter wire stratum reticulare, the design of filter wire stratum reticulare are provided between percolate lead layer and the second impervious barrier
The impurity in percolate can not only be removed, avoid it from entering and cause the stifled of percolate discharge guiding pipe in percolate lead layer
Plug, influences the discharge of percolate, reasonable in design.
Further, the thickness of enrockment base is greater than 300mm, and the thickness of fine sand base is more than or equal to 200mm, and enrockment base
Positioned at the lower section of fine sand base, the design of enrockment base and fine sand groundwork thickness may insure the structural strength of base, improve anti-
The anti-seepage effect of infiltration system.
Further, it is provided between underground water lead layer and the first impervious barrier, between the second impervious barrier and the soil layer that binds
Protective layer, protective layer with a thickness of 3mm~5mm, protective layer is bentonite waterproof pad, and the design of protective layer can be to the first antiseepage
Layer and the second impervious barrier are protected, and are prevented the first impervious barrier and the second impervious barrier from being destroyed, are pierced through by building stones etc., bentonite
The barrier performance of collision mat is good, is also convenient for the repairing in later period, while construction is simple, and the construction period is short, environmentally protective, cost performance
It is high.
Further, anti-seepage geomembrane bag layer includes two layers of anti-seepage geomembrane bag that upper and lower dislocation is laid with, anti-seepage geomembrane bag
Interior to be filled with concrete or cement mortar, the filling thickness of concrete or cement mortar is 5cm~10cm, two layers of anti-seepage geomembrane
The design of bag can be improved the anti-seepage effect of anti-seepage geomembrane bag layer, and the design of anti-seepage geomembrane bag inner stuffing thickness can be into
One step improves the antiseepage effect of anti-seepage geomembrane bag.
Using a kind of construction method of such as above-mentioned sanitary filling field restoration of the ecosystem seepage control system, it is characterised in that: packet
Include following steps:
1) early-stage preparations:
First according to design altitude and grade of side slope complete landfill area place it is smooth, roll and tamp, while to base
It is handled, hard object block, the plant roots and stems removal in area place and base surface will be filled, consequently facilitating the paving of subsequent geomembrane
If reasonably selecting the laying direction of geomembrane and according to the installation site of actual terrain topology's geomembrane, being completed at the same time and set
Count the drafting of drawing；
2) Anti-seeping technology at landfill area bottom:
(1) laying for carrying out base first is laid with a layer heap ground mass floor on the surface at landfill area bottom, it is ensured that enrockment base
Thickness be greater than 350mm, and the stone grain diameter in enrockment base is between 40mm~80mm, it is ensured that enrockment base is whole
It is laid with layer of fine sand base in the top of enrockment base again after consolidation, the thickness of fine sand base is more than or equal to 280mm, then thin
One layer of clay base is re-layed above sand base, between 200cm~320cm, infiltration coefficient is less than the thickness of clay base
10-7cm/s；
(2) after the completion of base is laid with, the setting of underground water lead layer is carried out above base, underground water lead layer uses grade
With sandy gravel be arranged, carry out gradation sandy gravel laying when, reserved the installation site of underground water discharge guiding pipe, and in time into
The installation of row underground water discharge guiding pipe；
(3) laying of the first impervious barrier is carried out after the completion of underground water lead layer is laid with, it is determining anti-according to area is laid with first
The use number of geomembrane bag is seeped, then to being filled in anti-seepage geomembrane bag, filling thickness is maintained between 5cm~10cm,
Then the laying of first layer anti-seepage geomembrane bag is carried out, when laying, ensures mutually to draw close between adjacent anti-seepage geomembrane bag, and first
Layer anti-seepage geomembrane bag continues the laying of second layer anti-seepage geomembrane bag after the completion of being laid with, in second layer anti-seepage geomembrane bag
Process of deployment ensures to shift to install between upper layer anti-seepage geomembrane bag and lower layer's anti-seepage geomembrane bag, to improve anti-seepage geomembrane
The anti-seepage effect of bag layer, anti-seepage geomembrane bag layer are geotechnological in the laying antiseepage of the top of upper layer anti-seepage geomembrane bag layer after the completion of being laid with
Clathrum, plays the role of anti-seepage geomembrane bag layer surface smooth, and the laying for being also convenient for anti-seepage geotextile layer is fixed, and is then carried out
The laying of anti-seepage geotextile layer；
(4) first impervious barriers carry out the laying of loaded filter after the completion of being laid with, it is ensured that anti-filter layer surface smooth then again into
The laying of row percolate lead layer, percolate lead layer are laid with using cobblestone, and the partial size of cobblestone is in 30mm~50mm
Between, laying depth is percolated well between 35cm~50cm, while in the process of deployment of cobblestone according to design drawing is reserved
The riding position of liquid discharge guiding pipe, and the installation for carrying out percolate discharge guiding pipe in time is fixed；
(5) percolate lead layer be laid with after the completion of, first above percolate lead layer be laid with a layer thickness be 15mm~
The filter wire stratum reticulare of 20mm, then the laying of the second impervious barrier is carried out, the installation of barrier sheet layer is carried out first, then carries out lower layer again
The installation of anti-seepage geomembrane layer, lower layer's anti-seepage geomembrane layer is fixedly connected by swell fixture with barrier sheet layer, then in lower layer
Then the top backfilled with earth of anti-seepage geomembrane layer presets anchoring groove on back fill course, then carries out upper layer anti-seepage geomembrane layer
Design, upper layer anti-seepage geomembrane layer pass through anchoring groove anchor；
After the completion of (6) second impervious barriers are laid with, the laying for the soil layer that bind；
3) Anti-seeping technology of area's side slope is filled:
When side slope carries out Anti-seeping technology, clay base, flexible barrier are laid with towards side slope along landfill area bottom baseline
Film layer and anti-seepage geotextile layer.
Further, in step 2), when carrying out the laying of the first impervious barrier and the soil layer that binds, first in underground water lead layer
A protective layer is set with the top of the second impervious barrier, so that the surface of the first impervious barrier and the second impervious barrier is protected,
Puncture of the first antiseepage layer surface by gradation sandy gravel surface is avoided, the corrosion of the minerals contained in underground water avoids
Puncture of two impervious barriers by rubbish heap surface.
Further, the step 2) the step of in (3), when carrying out the laying of anti-seepage geotextile, using artificial rolling paving, guarantee anti-
The flatness for seeping geotextiles cloth cover is fixed using suture between adjacent two pieces of anti-seepage geotextiles, suture width guarantee 10cm with
On.
Further, the step 2) the step of in (5), when carrying out the laying of the second impervious barrier, first in percolate lead layer
Top be arranged filter wire stratum reticulare.
The present invention is by adopting the above-described technical solution, have the advantages that
The good seepage-proof property of seepage control system of the invention, the first design of base can pass through heap in order to subsequent construction
The triple layer designs of ground mass layer, fine sand base and clay base can effectively improve the structural strength of base, while by clay base
Underground water can be discharged, keep away in order to the laying of underground water lead layer, underground water lead layer by the top that base is arranged in
Exempt from percolate to pollute underground water, and the top of underground water lead layer can be played by the design of the first impervious barrier it is anti-
Shield effect, protects underground water, passes through three layers of anti-seepage geomembrane bag layer, antiseepage geonet compartment and anti-seepage geotextile layer
The antiseepage effect that can effectively ensure the first impervious barrier is set, then the first impervious barrier can be protected by loaded filter,
The design of percolate lead layer simultaneously the percolate seldom permeated can be discharged from percolate lead layer, it is avoided to continue down
Layer sprawling, the second impervious barrier can come out to avoid the leachate leaking in landfill waste layer, and whole design is more reasonable.
The configuration of the present invention is simple, construction is simple, environment protecting is good, and anti-seepage effect has obtained great promotion, effectively prevent
Landfill leachate penetrates into underground and pollutes to soil and groundwater.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings:
Fig. 1 is the structural schematic diagram of a kind of sanitary filling field restoration of the ecosystem seepage control system of the present invention and its construction method；
Fig. 2 is flow chart of the invention.
In figure: 1- underground water lead layer；2- loaded filter；3- percolate lead layer；4- binds soil layer；5- Aerated Landfill Layers；
6- enrockment base；7- fine sand base；8- clay base；9- underground water discharge guiding pipe；10- anti-seepage geomembrane bag layer；11- antiseepage geotechnique
Clathrum；12- anti-seepage geotextile layer；13- percolate discharge guiding pipe；14- barrier sheet layer；15- lower layer anti-seepage geomembrane layer；16- is returned
Fill stratum；The upper layer 17- anti-seepage geomembrane layer；18- filter wire stratum reticulare；19- protective layer；20- flexible barrier film layer.
Specific embodiment
As shown in Figure 1, for a kind of sanitary filling field restoration of the ecosystem seepage control system of the present invention, including successively set from the bottom up
The base set, underground water lead layer 1, the first impervious barrier, loaded filter 2, percolate lead layer 3, the second impervious barrier, bind soil layer 4
With landfill waste layer, base includes the enrockment base 6, fine sand base 7 and clay base 8 set gradually from the bottom up, heap ground mass
The thickness of layer 6 is greater than 300mm, and the thickness of fine sand base 7 is more than or equal to 200mm, and enrockment base 6 is located under fine sand base 7
Side, the design of 7 thickness of enrockment base 6 and fine sand base may insure the structural strength of base, improve the antiseepage effect of seepage control system
Fruit, underground water discharge guiding pipe 9 is equipped in underground water lead layer 1, and the first impervious barrier includes the antiseepage soil set gradually from the bottom up
Work film bag layer 10, antiseepage geonet compartment 11 and anti-seepage geotextile layer 12, anti-seepage geomembrane bag layer 10 include that dislocation up and down is laid with
Two layers of anti-seepage geomembrane bag, be filled with concrete or cement mortar in anti-seepage geomembrane bag, concrete or cement mortar are filled out
It fills with a thickness of 5cm~10cm, the anti-seepage effect of anti-seepage geomembrane bag layer 10 can be improved in the design of two layers of anti-seepage geomembrane bag, prevents
The design for seeping geomembrane bag inner stuffing thickness can be further improved the antiseepage effect of anti-seepage geomembrane bag, percolate lead layer
It is equipped with percolate discharge guiding pipe 13 in 3, filter wire stratum reticulare 18 is provided between percolate lead layer 3 and the second impervious barrier, filters
The design of silk screen layer 18 can not only remove the impurity in percolate, avoid it from entering in percolate lead layer 3 and cause to seep
The blocking of filtrate discharge guiding pipe 13 influences the discharge of percolate, reasonable in design, the second impervious barrier include barrier sheet layer 14, under
Layer anti-seepage geomembrane layer 15, back fill course 16 and upper layer anti-seepage geomembrane layer 17, underground water lead layer 1 and the first impervious barrier it
Between, be provided with protective layer 19 between the second impervious barrier and the soil layer 4 that binds, protective layer 19 with a thickness of 3mm~5mm, protective layer
19 be bentonite waterproof pad, and the design of protective layer 19 can protect the first impervious barrier and the second impervious barrier, prevents first
Impervious barrier and the second impervious barrier are destroyed, and are pierced through by building stones etc., and the barrier performance of bentonite waterproof pad is good, are also convenient for the later period
Repairing, while construction is simple, the construction period is short, environmentally protective, and cost performance is high.
Using a kind of construction method of such as above-mentioned sanitary filling field restoration of the ecosystem seepage control system, as described in Figure 2, including
Following steps:
1) early-stage preparations:
First according to design altitude and grade of side slope complete landfill area place it is smooth, roll and tamp, while to base
It is handled, hard object block, the plant roots and stems removal in area place and base surface will be filled, consequently facilitating the paving of subsequent geomembrane
If reasonably selecting the laying direction of geomembrane and according to the installation site of actual terrain topology's geomembrane, being completed at the same time and set
Count the drafting of drawing；
2) Anti-seeping technology at landfill area bottom:
(1) laying for carrying out base first is laid with a layer heap ground mass floor 6 on the surface at landfill area bottom, it is ensured that heap ground mass
The thickness of layer 6 is greater than 350mm, and the stone grain diameter in enrockment base 6 is between 40mm~80mm, it is ensured that enrockment base
It is laid with layer of fine sand base 7 in the top of enrockment base 6 again after 6 whole consolidations, the thickness of fine sand base 7 is more than or equal to 280mm,
Then one layer of clay base 8 is re-layed in the top of fine sand base 7, the thickness of clay base 8 seeps between 200cm~320cm
Saturating coefficient is less than 10-7cm/s；
(2) after the completion of base is laid with, the setting of underground water lead layer 1 is carried out above base, underground water lead layer 1 uses
The setting of gradation sandy gravel has reserved the installation site of underground water discharge guiding pipe 9 when carrying out the laying of gradation sandy gravel, and and
The installation of Shi Jinhang underground water discharge guiding pipe 9；
(3) laying of the first impervious barrier is carried out after the completion of underground water lead layer 1 is laid with, it is determining anti-according to area is laid with first
The use number of geomembrane bag is seeped, then to being filled in anti-seepage geomembrane bag, filling thickness is maintained between 5cm~10cm,
Then the laying of first layer anti-seepage geomembrane bag is carried out, when laying, ensures mutually to draw close between adjacent anti-seepage geomembrane bag, and first
Layer anti-seepage geomembrane bag continues the laying of second layer anti-seepage geomembrane bag after the completion of being laid with, in second layer anti-seepage geomembrane bag
Process of deployment ensures to shift to install between upper layer anti-seepage geomembrane bag and lower layer's anti-seepage geomembrane bag, to improve anti-seepage geomembrane
The anti-seepage effect of bag layer 10 is laid with antiseepage in the top of upper layer anti-seepage geomembrane bag layer after the completion of the laying of anti-seepage geomembrane bag layer 10
Geonet compartment 11, plays the role of 10 surface of anti-seepage geomembrane bag layer smooth, and the laying for being also convenient for anti-seepage geotextile layer 12 is solid
It is fixed, the laying of anti-seepage geotextile layer 12 is then carried out, when carrying out the laying of anti-seepage geotextile, using artificial rolling paving, guarantees antiseepage
The flatness of geotextiles cloth cover is fixed using suture between adjacent two pieces of anti-seepage geotextiles, and suture width guarantees in 10cm or more；
(4) first impervious barriers carry out the laying of loaded filter 2 after the completion of being laid with, it is ensured that 2 surface of loaded filter smooth and then again
Carry out the laying of percolate lead layer 3, percolate lead layer 3 is laid with using cobblestone, the partial size of cobblestone 30mm~
Between 50mm, laying depth is reserved between 35cm~50cm, while in the process of deployment of cobblestone according to design drawing
The riding position of percolate discharge guiding pipe 13, and the installation for carrying out percolate discharge guiding pipe 13 in time is fixed；
(5) percolate lead layer 3 be laid with after the completion of, first above percolate lead layer 3 be laid with a layer thickness be 15mm~
The filter wire stratum reticulare 18 of 20mm, then the laying of the second impervious barrier is carried out, when carrying out the laying of the second impervious barrier, first in percolate
Filter wire stratum reticulare 18 is arranged in the top of lead layer 3, then carries out the installation of barrier sheet layer 14, then carries out lower layer antiseepage geotechnique again
The installation of film layer 15, lower layer's anti-seepage geomembrane layer 15 are fixedly connected by swell fixture with barrier sheet layer 14, then anti-in lower layer
The top backfilled with earth of geo membrane layers 15 is seeped, anchoring groove is then preset on back fill course 16, then carry out upper layer anti-seepage geomembrane
The design of layer 17, upper layer anti-seepage geomembrane layer 17 are anchored by anchoring groove；
After the completion of (6) second impervious barriers are laid with, the laying for the soil layer 4 that bind；
When the laying of (7) first impervious barriers and the soil layer 4 that binds, first in the upper of underground water lead layer 1 and the second impervious barrier
Side's setting protective layer 19 avoids the first impervious barrier to protect to the surface of the first impervious barrier and the second impervious barrier
Puncture of the surface by gradation sandy gravel surface, the corrosion of the minerals contained in underground water, avoids the second impervious barrier by rubbish
The puncture on rubbish heap surface；
3) Anti-seeping technology of area's side slope is filled:
When side slope carries out Anti-seeping technology, clay base 8, flexible barrier are laid with towards side slope along landfill area bottom baseline
Film layer 20 and anti-seepage geotextile layer 12.
The good seepage-proof property of seepage control system of the invention, the first design of base can pass through heap in order to subsequent construction
The triple layer designs of ground mass layer 6, fine sand base 7 and clay base 8 can effectively improve the structural strength of base, while by clay-based
The top that base is arranged in layer 8 can arrange underground water in order to the laying of underground water lead layer 1, underground water lead layer 1
Out, percolate is avoided to pollute underground water, and the top of underground water lead layer 1 can be with by the design of the first impervious barrier
Protective action is played, underground water is protected, passes through anti-seepage geomembrane bag layer 10, antiseepage geonet compartment 11 and antiseepage geotechnique
The three-layer set of layer of cloth 12 can effectively ensure the antiseepage effect of the first impervious barrier, then can be anti-to first by loaded filter 2
Infiltration layer is protected, while the design of percolate lead layer 3 can be by the percolate seldom permeated from 3 row of percolate lead layer
Out, it is avoided to continue to spread toward lower layer, the second impervious barrier can come out to avoid the leachate leaking in landfill waste layer, integrally set
It is more reasonable to count.
The above is only specific embodiments of the present invention, but technical characteristic of the invention is not limited thereto.It is any with this hair
Based on bright, to realize essentially identical technical effect, made ground simple change, equivalent replacement or modification etc. are all covered
Among protection scope of the present invention.
Claims (6)
1. a kind of sanitary filling field restoration of the ecosystem seepage control system, it is characterised in that: including set gradually from the bottom up base,
Underground water lead layer, the first impervious barrier, loaded filter, percolate lead layer, the second impervious barrier, bind soil layer and landfill waste layer,
The base includes the enrockment base, fine sand base and clay base set gradually from the bottom up, in the underground water lead layer
Be equipped with underground water discharge guiding pipe, between the underground water lead layer and first impervious barrier, second impervious barrier with it is described
Bind and be provided with protective layer between soil layer, the protective layer with a thickness of 3mm~5mm, the protective layer is bentonite waterproof
Pad, first impervious barrier include anti-seepage geomembrane bag layer, antiseepage geonet compartment and the antiseepage soil set gradually from the bottom up
Work layer of cloth is equipped with percolate discharge guiding pipe, the percolate lead layer and second impervious barrier in the percolate lead layer
Between be provided with filter wire stratum reticulare, second impervious barrier include barrier sheet layer, lower layer's anti-seepage geomembrane layer, back fill course and on
Layer anti-seepage geomembrane layer；The construction method of the seepage control system includes the following steps:
1) early-stage preparations:
First according to design altitude and grade of side slope complete landfill area place it is smooth, roll and tamp, while base is carried out
Processing will fill hard object block, the plant roots and stems removal in area place and base surface, consequently facilitating the laying of subsequent geomembrane,
And according to the installation site of actual terrain topology's geomembrane, the laying direction of geomembrane is reasonably selected, design is completed at the same time
The drafting of drawing；
2) Anti-seeping technology at landfill area bottom:
(1) laying for carrying out base first is laid with a layer heap ground mass floor on the surface at landfill area bottom, it is ensured that the thickness of enrockment base
Degree is greater than 350mm, and the stone grain diameter in enrockment base is between 40mm~80mm, it is ensured that enrockment base entirety consolidation
It is laid with layer of fine sand base in the top of enrockment base again afterwards, the thickness of fine sand base is more than or equal to 280mm, then in fine sand base
The top of layer re-lays one layer of clay base, and the thickness of clay base is between 200cm~320cm, and infiltration coefficient is less than 10- 7cm/s；
(2) after the completion of base is laid with, the setting of underground water lead layer is carried out above base, underground water lead layer uses graded sand
Cobble setting has reserved the installation site of underground water discharge guiding pipe when carrying out the laying of gradation sandy gravel, and carries out ground in time
It is lauched the installation of discharge guiding pipe；
(3) laying of the first impervious barrier is carried out after the completion of underground water lead layer is laid with, and antiseepage soil is determined according to laying area first
The use number of work film bag, then to being filled in anti-seepage geomembrane bag, filling thickness is maintained between 5cm~10cm, then
The laying of first layer anti-seepage geomembrane bag is carried out, when laying ensures mutually to draw close between adjacent anti-seepage geomembrane bag, and first layer is anti-
The laying for continuing second layer anti-seepage geomembrane bag after the completion of geomembrane bag is laid with is seeped, is laid in second layer anti-seepage geomembrane bag
Process ensures to shift to install between upper layer anti-seepage geomembrane bag and lower layer's anti-seepage geomembrane bag, to improve anti-seepage geomembrane bag layer
Anti-seepage effect, anti-seepage geomembrane bag layer be laid with after the completion of upper layer anti-seepage geomembrane bag layer top be laid with antiseepage earthwork grid
Layer, plays the role of anti-seepage geomembrane bag layer surface smooth, and the laying for being also convenient for anti-seepage geotextile layer is fixed, and antiseepage is then carried out
The laying of geotextile layer；
(4) first impervious barriers carry out the laying of loaded filter after the completion of being laid with, it is ensured that anti-filter layer surface smooth and then seeped again
The laying of filtrate lead layer, percolate lead layer are laid with using cobblestone, the partial size of cobblestone between 30mm~50mm,
Laying depth has reserved percolate guide according to design drawing between 35cm~50cm, while in the process of deployment of cobblestone
The riding position of pipe, and the installation for carrying out percolate discharge guiding pipe in time is fixed；
(5) after the completion of percolate lead layer is laid with, it is 15mm~20mm's that a layer thickness is first laid with above percolate lead layer
Filter wire stratum reticulare, then the laying of the second impervious barrier is carried out, the installation of barrier sheet layer is carried out first, then carries out lower layer's antiseepage soil again
The installation of work film layer, lower layer's anti-seepage geomembrane layer are fixedly connected by swell fixture with barrier sheet layer, then in lower layer's antiseepage soil
Then the top backfilled with earth of work film layer presets anchoring groove on back fill course, then carries out the design of upper layer anti-seepage geomembrane layer,
Upper layer anti-seepage geomembrane layer is anchored by anchoring groove；
After the completion of (6) second impervious barriers are laid with, the laying for the soil layer that bind；
3) Anti-seeping technology of area's side slope is filled:
When side slope carries out Anti-seeping technology, clay base, flexible barrier film layer are laid with towards side slope along landfill area bottom baseline
With anti-seepage geotextile layer.
2. a kind of sanitary filling field restoration of the ecosystem seepage control system according to claim 1, it is characterised in that: the enrockment
The thickness of base is greater than 300mm, and the thickness of the fine sand base is more than or equal to 200mm, and enrockment base is located at the fine sand base
The lower section of layer.
3. a kind of sanitary filling field restoration of the ecosystem seepage control system according to claim 1, it is characterised in that: the antiseepage
Geomembrane bag layer includes two layers of anti-seepage geomembrane bag that upper and lower dislocation is laid with, in the anti-seepage geomembrane bag filled with concrete or
The filling thickness of cement mortar, the concrete or cement mortar is 5cm~10cm.
4. a kind of sanitary filling field restoration of the ecosystem seepage control system according to claim 1, it is characterised in that: in the step
It is rapid 2) in, carry out the first impervious barrier and bind soil layer laying when, first in the top of underground water lead layer and the second impervious barrier
A protective layer is set and avoids the first antiseepage layer surface to protect to the surface of the first impervious barrier and the second impervious barrier
By the puncture on gradation sandy gravel surface, the corrosion of the minerals contained in underground water avoids the second impervious barrier by rubbish heap
The puncture on surface.
5. a kind of sanitary filling field restoration of the ecosystem seepage control system according to claim 1, it is characterised in that: in the step
It is rapid 2) the step of (3) in, when carrying out the laying of anti-seepage geotextile, using artificial rolling paving, guarantee the smooth of anti-seepage geotextile cloth cover
It spends, is fixed between adjacent two pieces of anti-seepage geotextiles using suture, suture width guarantees in 10cm or more.
6. a kind of sanitary filling field restoration of the ecosystem seepage control system according to claim 1, it is characterised in that: in the step
It is rapid 2) the step of (5) in, carry out the second impervious barrier laying when, first percolate lead layer top be arranged filter screen
Layer.
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| CN204059424U (en) * | 2014-08-14 | 2014-12-31 | 深圳市中兰环保科技有限公司 | Slope seepage control structure |
| CN206090642U (en) * | 2016-09-01 | 2017-04-12 | 中湘环保股份有限公司 | Protective surface layer is passed through in landfill's prevention of seepage |
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