CN114439048A - Anti-seepage structure for polluted site and construction method - Google Patents
Anti-seepage structure for polluted site and construction method Download PDFInfo
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- CN114439048A CN114439048A CN202210119015.4A CN202210119015A CN114439048A CN 114439048 A CN114439048 A CN 114439048A CN 202210119015 A CN202210119015 A CN 202210119015A CN 114439048 A CN114439048 A CN 114439048A
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- strip
- seepage
- protective seat
- extending
- plugging
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- 238000010276 construction Methods 0.000 title claims abstract description 15
- 230000001681 protective effect Effects 0.000 claims abstract description 65
- 239000000463 material Substances 0.000 claims abstract description 39
- 238000007789 sealing Methods 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000012528 membrane Substances 0.000 claims description 55
- 238000003466 welding Methods 0.000 claims description 16
- 239000004927 clay Substances 0.000 claims description 13
- 239000004746 geotextile Substances 0.000 claims description 13
- 230000002265 prevention Effects 0.000 claims description 12
- 229920003023 plastic Polymers 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000008595 infiltration Effects 0.000 claims 1
- 238000001764 infiltration Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 11
- 238000003780 insertion Methods 0.000 description 9
- 230000037431 insertion Effects 0.000 description 9
- 230000013011 mating Effects 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 239000002689 soil Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
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- 210000003141 lower extremity Anatomy 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
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Images
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
- E02D31/004—Sealing liners
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0037—Clays
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2450/00—Gaskets
- E02D2450/10—Membranes
- E02D2450/105—Membranes impermeable
- E02D2450/106—Membranes impermeable for liquids
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/30—Landfill technologies aiming to mitigate methane emissions
Abstract
The invention provides a seepage-proofing structure of a polluted site and a construction method, wherein the seepage-proofing structure comprises a first splicing strip, a second splicing strip and a protective seat, the first splicing strip comprises a plurality of first extension strips, and a first splicing cavity is formed between every two adjacent first extension strips; the second inserting strips comprise a plurality of second extending strips inserted into the first inserting cavities, and a second inserting cavity is formed between every two adjacent second extending strips; the side wall of the protective seat is provided with a through groove, the protective seat can be arranged outside the first splicing strip and the second splicing strip in a surrounding manner, and pouring materials are filled in the protective seat; expansion sealing strips are arranged between the first inserting strips and the second inserting strips which are adjacently arranged. According to the anti-seepage structure for the polluted site, the first plug strip and the second plug strip are in plug fit, the protective seat is sleeved on the outer side of the connecting position of the first plug connector and the second plug connector, and the expansion sealing strip can expand in the presence of water, so that the sealing performance of the connecting position is guaranteed.
Description
Technical Field
The invention belongs to the technical field of anti-seepage film sealing, and particularly relates to an anti-seepage structure for a polluted site and a construction method.
Background
The vertical curtain wall is arranged at the periphery of the engineering and is a secondary pollution prevention measure, and the vertical curtain wall adopts a vertically arranged barrier layer to block the migration and diffusion of pollutants to peripheral soil and underground water. The technology can temporarily limit pollutants in a small area according to the geological and hydrological conditions of the site without affecting surrounding soil and groundwater. On the basis, a flexible impermeable film is adopted for blocking, so that liquid dissolved pollutants and volatile gas organic pollutants in underground water and soil can be completely isolated.
Because the width of the impermeable membrane is narrow, two adjacent impermeable membranes need to be connected. The material of the anti-seepage film is soft and has no rigidity, so the connecting part of the anti-seepage film becomes the construction difficulty of the vertical curtain wall. At present, a male and female buckle connection method is adopted in construction, but the connection easily generates a connection gap to increase penetrability, reduce the barrier strength of a wall body and easily generate the risk of tripping.
Disclosure of Invention
The invention aims to provide an anti-seepage structure for a polluted site and a construction method, which can realize effective sealing of the connection position of an anti-seepage film and improve the effect of the anti-seepage film on obstructing pollutants in water.
In order to achieve the purpose, the invention adopts the technical scheme that: there is provided a contaminated site anti-seepage structure for connecting a first anti-seepage film and a second anti-seepage film adjacently disposed, including:
the first plugging strip is connected to the edge of the first impermeable membrane and comprises a plurality of first extending strips extending to the outside of the side surface of the first impermeable membrane, and a first plugging cavity is formed between every two adjacent first extending strips;
the second inserting strips are connected to the edge of the second impermeable membrane, each first inserting strip comprises a plurality of second extending strips which extend to the outer side of the side face of the second impermeable membrane and are inserted into the first inserting cavities, and a second inserting cavity which is inserted and matched with the first extending strips is formed between every two adjacent second extending strips;
the protective seat is provided with an upward opening, a through groove for the first anti-seepage film and the second anti-seepage film to penetrate through is formed in the side wall of the protective seat, the protective seat can be arranged outside the first splicing strip and the second splicing strip in a surrounding mode, and pouring materials wrapping the peripheries of the first splicing strip and the second splicing strip are filled in the protective seat;
wherein, all be equipped with the inflation sealing strip between first grafting strip and the second grafting strip of adjacent setting.
In a possible implementation manner, the first extending strip comprises a first vertical plate extending to the outside of the side surface of the first impermeable membrane and a first transverse plate connected to the outer edge of the first vertical plate, and the first transverse plate is perpendicular to the first vertical plate;
the second extending strip comprises a second vertical plate extending to the outside of the side face of the second impermeable membrane and a second transverse plate connected to the outer edge of the second vertical plate, and the second transverse plate is perpendicular to the second vertical plate;
the first vertical plate and the second vertical plate extend towards the adjacent side, and the expansion sealing strip is located in a space surrounded by the first transverse plate, the first vertical plate, the second transverse plate and the second vertical plate.
In a possible implementation manner, the first plugging strip further comprises a first matching strip arranged in parallel with the first extending strip, the first matching strip is positioned on one side of the first extending strip close to the first impermeable membrane, and the extending end extends to one side close to the first extending strip; the second plugging strip also comprises a second matching strip arranged in parallel with the second extending strip, the second matching strip is positioned on one side of the second extending strip close to the second impermeable membrane, and the extending end of the second matching strip extends to one side close to the second extending strip;
wherein, can form the first chamber with the cooperation of pegging graft of second extension strip between first cooperation strip and the first extension strip, can form the second chamber with the cooperation of pegging graft of first extension strip between the cooperation strip of second and the second extension strip.
In a possible implementation manner, the protection seat is a rigid material member, the horizontal cross section of the protection seat is rectangular, the protection seat is arranged on two opposite side walls of the protection seat through a groove, the protection seat extends upwards to the upper edge of the protection seat along the vertical direction, and the bottom wall of the groove is arranged higher than the inner bottom wall of the protection seat.
In some embodiments, the casting comprises:
the cementing material is filled at the inner bottom of the protective seat;
the concrete layer is filled in the protective seat and is positioned above the cementing material;
and the clay layer is filled in the protective seat and is positioned above the concrete layer.
In one possible implementation, the expansion seal comprises:
the connecting parts are sequentially connected one by one to form a strip shape and can expand to the side part to be abutted against the side walls of the first plug strip and the second plug strip when meeting water;
the plugging portion is connected to two outermost connecting portions and used for plugging two ends of a superposition area of the first plugging cavity and the second plugging cavity, and the plugging portion can expand to protrude upwards from the first plugging strip and the second plugging strip when meeting water.
In one possible implementation, the shield seat includes:
the geotextile layer forms a bag-shaped structure with an upward opening;
the hard layers are arranged on the inner side and the outer side of the geotextile layer and form a rectangular shell capable of containing pouring materials together with the geotextile; the groove penetrates through the geotextile layer and the hard layer.
In a possible implementation mode, the first inserting strip is connected with the first impermeable membrane by adopting double-seam heat seal welding, and the second inserting strip is connected with the second impermeable membrane by adopting double-seam heat seal welding.
Compared with the prior art, the scheme shown in the embodiment of the application, the anti-seepage structure for the polluted site provided by the embodiment of the application, the effective connection of the edge positions of the first anti-seepage film and the second anti-seepage film is realized through the insertion matching of the first insertion strip and the second insertion strip, the protection seat is sleeved on the outer side of the connection position of the first insertion strip and the second insertion strip, the protection seat is provided with through holes for the first anti-seepage film and the second anti-seepage film to penetrate out from two sides, the expansion sealing strips arranged in the first insertion cavity and the second insertion cavity can expand in the presence of water, the gaps inside the first insertion strip and the second insertion strip are effectively filled, the sealing performance of the anti-seepage films is ensured, and the anti-seepage performance of the osmosis films is improved.
The invention also provides a construction method of the sealing structure of the polluted site, which is suitable for the anti-seepage structure of the polluted site and comprises the following steps:
s100, arranging a protective seat and a pouring guide pipe:
fixing the lower end of the pouring guide pipe at the inner bottom of the protective seat, installing a balancing weight to the outer bottom of the protective seat, and lowering the protective seat and the pouring guide pipe to keep the verticality of the protective seat in the lowering process;
s200, assembling the first impermeable film and the second impermeable film to form an integral impermeable film:
assembling a first splicing strip and a second splicing strip, installing an expansion sealing strip between the first splicing strip and the second splicing strip, welding the first splicing strip to the first impermeable membrane, and welding the second splicing strip to the second impermeable membrane to form an integral impermeable membrane;
s300, lowering the integral impermeable membrane:
synchronously lowering the integral impermeable membrane into the protective seat by using the guide mounting frame;
s400, filling of a protective seat:
and filling a cementing material to the bottom of the protective seat, filling plastic concrete into the protective seat after the cementing material is solidified, and filling clay into the protective seat until the clay is flush with the upper edge of the protective seat after the plastic concrete is solidified.
In step S100: a vertically through mounting ring is arranged in the protective seat, a rubber sleeve is arranged on the inner wall of the mounting ring, and the lower end of the pouring guide pipe extends into the rubber sleeve; the balancing weight is a rectangular hollow metal component.
The construction method of the sealing structure for the polluted site provided by the embodiment can realize effective connection between the first anti-seepage film and the second anti-seepage film, the protection seat and the pouring material inside the protection seat form effective protection for the connection position of the first inserting strip and the second inserting strip, the reliability of the connection structure is guaranteed, and a good sealing effect is achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic top view of an anti-seepage structure of a contaminated site according to an embodiment of the present invention;
FIG. 2 is an enlarged cross-sectional view of FIG. 1I according to an embodiment of the present invention;
fig. 3 is an enlarged structural schematic view of the first splicing strip, the second splicing strip and the expansion sealing strip in the embodiment of fig. 1 in an explosion state;
fig. 4 is a schematic structural diagram of a combined state of the first splicing strip, the second splicing strip and the expansion sealing strip in fig. 3 according to the embodiment of the present invention;
fig. 5 is an enlarged structural view of an exploded state of another embodiment of the first plug strip, the second plug strip and the expansion sealing strip in the embodiment of the invention;
fig. 6 is a schematic structural view of the combined state of the first splicing strip, the second splicing strip and the expansion sealing strip in fig. 5 according to the embodiment of the present invention;
fig. 7 is a left-side view schematically showing the rotational structure of the expansion seal strip in embodiment 1 of the present invention.
Wherein, in the figures, the respective reference numerals:
1. a first plugging strip; 11. a first extension bar; 111. a first vertical plate; 112. a first transverse plate; 12. a first plug cavity; 13. a first mating strip; 14. a first chamber; 2. a second plugging strip; 21. a second extension bar; 211. a second vertical plate; 212. a second transverse plate; 22. a second plug cavity; 23. a second mating strip; 24. a second chamber; 3. a protective seat; 31. a geotextile layer; 32. a hard layer; 33. a mounting ring; 34. a rubber sleeve; 35. passing through the slot; 4. expanding the sealing strip; 41. a connecting portion; 42. a plugging section; 51. pouring a guide pipe; 61. a first impermeable membrane; 62. a second impermeable membrane.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or be indirectly on the other element. It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be constructed in a particular operation, and are therefore not to be considered limiting. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or several of that feature. In the description of the present invention, "a number" means two or more unless specifically limited otherwise.
Referring to fig. 1 to 7 together, the anti-seepage structure and construction method for contaminated site according to the present invention will now be described. The anti-seepage structure for the polluted site is used for connecting a first anti-seepage film 61 and a second anti-seepage film 62 which are adjacently arranged, and comprises a first inserting strip 1, a second inserting strip 2 and a protection seat 3, wherein the first inserting strip 1 is connected to the edge of the first anti-seepage film 61, the first inserting strip 1 comprises a plurality of first extending strips 11 which extend to the outside of the side surface of the first anti-seepage film 61, and a first inserting cavity 12 is formed between every two adjacent first extending strips 11; the second plugging strip 2 is connected with the edge of the second impermeable membrane 62, the first plugging strip 1 comprises a plurality of second extending strips 21 which extend to the outside of the side surface of the second impermeable membrane 62 and are plugged in the first plugging cavity 12, and a second plugging cavity 22 which is plugged and matched with the first extending strip 11 is formed between every two adjacent second extending strips 21; the protective seat 3 is provided with an upward opening, the side wall of the protective seat is provided with a through groove 35 for the first anti-seepage film 61 and the second anti-seepage film 62 to penetrate through, the protective seat 3 can be arranged outside the first splicing strip 1 and the second splicing strip 2 in a surrounding manner, and pouring materials wrapping the peripheries of the first splicing strip 1 and the second splicing strip 2 are filled in the protective seat 3;
wherein, all be equipped with expansion seal strip 4 between the first grafting strip 1 that sets up adjacently and the second grafting strip 2.
Compared with the prior art, the seepage-proofing structure for the polluted site provided by the embodiment utilizes the plugging cooperation of the first plugging strip 1 and the second plugging strip 2 to realize the effective connection of the edge positions of the first seepage-proofing film 61 and the second seepage-proofing film 62, the protection seat 3 is sleeved at the outer side of the connection position of the first plug connector and the second plug connector, the protection seat 3 is provided with through holes for the first seepage-proofing film 61 and the second seepage-proofing film 62 to penetrate out from two sides, the expansion sealing strip 4 arranged in the first plugging cavity 12 and the second plugging cavity 22 can expand in water, so that the gap inside the first plugging strip 1 and the second plugging strip 2 is effectively filled, the sealing performance of the seepage-proofing films is ensured, and the seepage-proofing performance of the seepage films is improved.
In some possible implementations, the first extension bar 11 and the second extension bar 21 have the structure shown in fig. 3. Referring to fig. 3 to 6, the first extending strip 11 includes a first vertical plate 111 extending to the outside of the lateral side of the first impermeable membrane 61 and a first horizontal plate 112 connected to the outer edge of the first vertical plate 111, and the first horizontal plate 112 is perpendicular to the first vertical plate 111; the second extending strip 21 comprises a second vertical plate 211 extending to the outside of the side surface of the second impermeable membrane 62 and a second horizontal plate 212 connected to the outer edge of the second vertical plate 211, and the second horizontal plate 212 is perpendicular to the second vertical plate 211;
the first vertical plate 111 and the second vertical plate 211 extend to adjacent sides, and the expansion sealing strip 4 is located in a space surrounded by the first horizontal plate 112, the first vertical plate 111, the second horizontal plate 212 and the second vertical plate 211.
The first extending strips 11 comprise first vertical plates 111 and first horizontal plates 112, the first horizontal plates 112 are perpendicular to the first vertical plates 111 and extend to two sides of the first vertical plates 111 respectively, the first vertical plates and the first vertical plates can form members with T-shaped cross sections, rectangular first inserting cavities 12 are formed between the two first extending strips 11, and the second extending strips 21 are inserted into the first inserting cavities 12.
Similarly, the second extending strips 21 are combined by the second vertical plate 211 and the second horizontal plate 212, and a second inserting cavity 22 for inserting and matching with the first extending strip 11 is formed between the two second extending strips 21, so that the reliability of inserting and matching is ensured.
In some possible implementations, referring to fig. 3 and 4, the first plugging strip 1 further includes a first mating strip 13 disposed parallel to the first extending strip 11, the first mating strip 13 is located on one side of the first extending strip 11 close to the first impermeable membrane 61, and the outer end extends to one side close to the first extending strip 11; the second plugging strip 2 further comprises a second matching strip 23 arranged in parallel with the second extending strip 21, the second matching strip 23 is positioned on one side of the second extending strip 21 close to the second impermeable membrane 62, and the outer extending end of the second matching strip 23 extends to one side close to the second extending strip 21;
a first cavity 14 in plug-in fit with the second extension bar 21 can be formed between the first matching bar 13 and the first extension bar 11, and a second cavity 24 in plug-in fit with the first extension bar 11 can be formed between the second matching bar 23 and the second extension bar 21.
On the basis of the plug-in structure, the first plug-in unit is further provided with a first matching strip 13, the first matching strip 13 is located on one side, close to the first anti-seepage film 61, of the first extending strip 11, the extending end extends towards one side, close to the first extending strip 11, the first matching strip 13 and the adjacent first extending strip 11 form a first cavity 14, the first cavity 14 can contain the second extending strip 21, and all the second extending strips 21 on the second plug-in strip 2 can be plugged in the first cavity 14, so that the connection reliability is enhanced, and a good anti-seepage effect is achieved.
Similarly, the second mating strip 23 and the second extension strip 21 adjacent to the second mating strip form a second cavity 24, the second cavity 24 can accommodate the first extension strip 11, and the first extension strip 11 can be inserted into the second cavity 24, so that the reliability of connection between the first connector and the second connector is improved.
In some possible implementations, the above-mentioned characteristic protection seat 3 adopts the structure shown in fig. 1 and 2. Referring to fig. 1 and 2, the protection seat 3 is a rigid member, the horizontal cross section of the protection seat 3 is rectangular, and the protection seat is disposed on two opposite sidewalls of the protection seat 3 through a groove 35, and extends upward to the upper edge of the protection seat 3 along the vertical direction, and the bottom wall of the groove 35 is higher than the inner bottom wall of the protection seat 3.
Set up on the double-phase relative lateral wall of protection seat 3 through groove 35, be convenient for cooperate the first prevention of seepage membrane 61 and the second prevention of seepage membrane 62 of both sides to extend to both sides, be higher than the interior diapire of protection seat 3 through the tank bottom wall of groove 35, make cementitious material have the deposit of certain thickness in the bottom of protection seat 3, can wrap up the lower limb position of prevention of seepage membrane, guarantee sealed effect.
In some embodiments, the casting material includes a cementing material, a concrete layer and an clay layer, and the cementing material is filled in the inner bottom of the protection seat 3; the concrete layer is filled in the protective seat 3 and is positioned above the cementing material; the clay layer is filled in the protective seat 3 and is positioned above the concrete layer.
The pouring material is divided into three layers of cementing material, concrete layer and clay layer, the cementing material is arranged at the inner bottom of the protective seat 3 and consists of a plurality of materials such as polyacrylamide, bentonite, Portland cement, epoxy colored sand, dispersing agent, retarder and the like, so that the sealing effect of the lower part of the impermeable membrane is good, and the sealing effect of the lower part of the impermeable membrane is convenient to guarantee.
The concrete layer is filled above the cementing material, has good condensation effect, and the clay layer is positioned above the concrete layer and is consistent with external materials, so that the clay layer is effectively connected with the external environment.
In some possible implementations, the expansion seal 4 of the above-described character takes the configuration shown in fig. 7. Referring to fig. 7, the expansion sealing strip 4 includes a plurality of connecting portions 41 and a blocking portion 42, the connecting portions 41 are sequentially connected one by one to form a strip shape, and can expand to a side portion to be abutted against the side walls of the first plug strip 1 and the second plug strip 2 when meeting water; the plugging portions 42 are connected to the two outermost connecting portions 41 and used for plugging two ends of the overlapping area of the first plug cavity 12 and the second plug cavity 22, and the plugging portions 42 can expand to protrude upwards from the first plug strip 1 and the second plug strip 2 when meeting water.
Adopt a plurality of connecting portion 41 of connecting in order and set up the shutoff portion 42 at above-mentioned connecting portion 41 both ends and combine to form inflation sealing strip 4, every connecting portion 41 in the middle of is spherical structure respectively, when it met water, can expand to with the lateral wall butt of first grafting strip 1 or second grafting strip 2, realize the effective shutoff to the coincidence region of first grafting chamber 12 and second grafting chamber 22.
In the expansion process, the connecting portion 41 has a certain length extending in the length direction, so that the plugging portions 42 at the two ends can protrude upwards or downwards from the upper end and the lower end of the first plugging strip 1, and at this time, the expansion sealing strip 4 completes the expansion process and has a good sealing effect.
In some possible implementations, the above-mentioned characteristic protection seat 3 adopts the structure shown in fig. 2. Referring to fig. 2, the protection seat 3 includes a geotextile layer 31 and a hard layer 32, wherein the geotextile layer 31 forms a bag-shaped structure with an upward opening; the hard layers 32 are arranged on the inner side and the outer side of the geotextile layer 31 and form a rectangular shell capable of containing pouring materials together with the geotextile; disposed through geotextile layer 31 and hard layer 32 by way of slots 35.
The protective seat 3 adopts a combination of the geotextile layer 31 and the hard layer 32, and the geotextile layer 31 has good tear resistance and can bear certain tension. The hard layer 32 provides a hard frame, so that pouring of a cementing material and a plastic concrete layer is facilitated, and effective protection of the first inserting strip 1 and the second inserting strip 2 is realized.
In some possible implementations, the first plug strip 1 is connected to the first impermeable membrane 61 by double seam heat seal welding, and the second plug strip 2 is connected to the second impermeable membrane 62 by double seam heat seal welding.
The double-seam heat seal welding has reliable welding performance, guarantees the firmness between the first inserting strip 1 and the first anti-seepage film 61, and also guarantees the connection reliability between the second inserting strip 2 and the second anti-seepage film 62. Before the double-seam heat-seal welding construction, the first anti-seepage film 61 and the second anti-seepage film 62 in the overlapping range are cleaned, dust and dirt are wiped off by using wet cleaning cloth, and the overlapping length of the anti-seepage films and the welding seams of the first splicing strip 1 and the second splicing strip 2 is checked, so that the overlapping length is in the range of 80-100 mm. The soldering operation cannot be performed when the ambient temperature is higher than 40 c or lower than 0 c.
Based on the same invention concept, the embodiment of the application also provides a construction method of the sealing structure of the polluted site, which is suitable for the anti-seepage structure of the polluted site and comprises the following steps:
s100, arranging a protective seat 3 and a pouring guide pipe 51:
fixing the lower end of the pouring guide pipe 51 at the inner bottom of the protective seat 3, installing a balancing weight to the outer bottom of the protective seat 3, and lowering the protective seat 3 and the pouring guide pipe 51 to keep the verticality of the protective seat 3 in the lowering process;
s200, assembling the first impermeable membrane 61 and the second impermeable membrane 62 to form an integral impermeable membrane:
assembling a first splicing strip 1 and a second splicing strip 2, installing an expansion sealing strip 4 between the first splicing strip 1 and the second splicing strip 2, welding the first splicing strip 1 to a first impermeable membrane 61, and welding the second splicing strip 2 to a second impermeable membrane 62 to form an integral impermeable membrane;
s300, lowering the integral impermeable membrane:
synchronously lowering the integral impermeable membrane into the protective seat 3 by using the guide mounting frame;
s400, filling of the protective seat 3:
and filling a cementing material to the bottom of the protective seat 3, filling plastic concrete into the protective seat 3 after the cementing material is solidified, and filling clay into the protective seat 3 until the clay is flush with the upper edge of the protective seat 3 after the plastic concrete is solidified.
In step S100: a vertically through mounting ring 33 is arranged in the protective seat 3, a rubber sleeve 34 is arranged on the inner wall of the mounting ring 33, and the lower end of the pouring guide pipe 51 extends into the rubber sleeve 34; the balancing weight is a rectangular hollow metal component. The balancing weight adopts a hollow structure, so that external materials can permeate into the balancing weight and combine with the balancing weight into a whole, and the protection seat 3 is fixed. The counterweight block is made of metal materials, so that the self weight of the counterweight block can be increased, the weight pressing effect is enhanced, and the protective seat 3 can smoothly sink to a required position.
According to the construction method of the sealing structure of the polluted site, the first anti-seepage film 61 and the second anti-seepage film 62 can be effectively connected, the protection seat 3 and the pouring material inside the protection seat form effective protection for the connection position of the first inserting strip 1 and the second inserting strip 2, the reliability of the connection structure is guaranteed, and a good sealing effect is achieved.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. Pollute place seepage prevention structure for connect adjacent first prevention of seepage membrane and the second prevention of seepage membrane that sets up, its characterized in that includes:
the first plugging strip is connected to the edge of the first impermeable membrane and comprises a plurality of first extending strips extending to the outside of the side surface of the first impermeable membrane, and a first plugging cavity is formed between every two adjacent first extending strips;
the second plugging strips are connected to the edge of the second impermeable membrane, each first plugging strip comprises a plurality of second extending strips which extend to the outer side of the side face of the second impermeable membrane and are plugged in the first plugging cavity, and a second plugging cavity which is plugged and matched with the first extending strips is formed between every two adjacent second extending strips;
the protective seat is provided with an upward opening, a through groove for the first anti-seepage film and the second anti-seepage film to penetrate through is formed in the side wall of the protective seat, the protective seat can be arranged outside the first splicing strip and the second splicing strip in a surrounding mode, and pouring materials wrapping the peripheries of the first splicing strip and the second splicing strip are filled in the protective seat;
and expansion sealing strips are arranged between the first inserting strips and the second inserting strips which are arranged adjacently.
2. The seepage-proofing structure for the polluted site according to claim 1, wherein the first extending strip comprises a first vertical plate extending to the outside of the side surface of the first seepage-proofing film and a first transverse plate connected to the outer edge of the first vertical plate, and the first transverse plate is arranged perpendicular to the first vertical plate;
the second extending strip comprises a second vertical plate extending to the outside of the side face of the second impermeable membrane and a second transverse plate connected to the outer edge of the second vertical plate, and the second transverse plate is perpendicular to the second vertical plate;
the first vertical plate and the second vertical plate extend towards the adjacent side, and the expansion sealing strip is located in a space surrounded by the first transverse plate, the first vertical plate, the second transverse plate and the second vertical plate.
3. The anti-seepage structure for the polluted site as claimed in claim 2, wherein the first inserting strip further comprises a first matching strip arranged in parallel with the first extending strip, and the first matching strip is positioned on one side of the first extending strip close to the first anti-seepage film; the second plugging strip also comprises a second matching strip arranged in parallel with the second extending strip, and the second matching strip is positioned on one side of the second extending strip close to the second impermeable membrane;
the first cavity in inserting fit with the second extension strip can be formed between the first matching strip and the first extension strip, and the second cavity in inserting fit with the first extension strip can be formed between the second matching strip and the second extension strip.
4. The structure of preventing infiltration of contaminated site according to any of claims 1 to 3, wherein said protection seat is a rigid material member, the horizontal section of said protection seat is rectangular, said through grooves are provided on two opposite side walls of said protection seat and extend upward in the vertical direction to the upper edge of said protection seat, the bottom wall of said through groove is provided higher than the inner bottom wall of said protection seat.
5. The contaminated site seepage prevention structure of claim 4, wherein the casting material comprises:
the cementing material is filled at the inner bottom of the protective seat;
the concrete layer is filled in the protective seat and is positioned above the cementing material;
and the clay layer is filled in the protective seat and is positioned above the concrete layer.
6. The contaminated site seepage prevention structure of any of claims 1-3, wherein said expansion sealing strip comprises:
the connecting parts are sequentially connected one by one to form a strip shape and can expand to the side part when meeting water to be abutted against the side walls of the first inserting strip and the second inserting strip;
the plugging parts are connected to the two outermost connecting parts and used for plugging two ends of a superposition area of the first plugging cavity and the second plugging cavity, and the plugging parts can expand to protrude upwards from the first plugging strip and the second plugging strip when meeting water.
7. The contaminated site seepage prevention structure of claim 1, wherein the protection seat comprises:
the geotextile layer forms a bag-shaped structure with an upward opening;
hard layer, set up in geotechnological cloth layer's inside and outside both sides, with geotechnological cloth forms jointly can hold pouring material's rectangle casing, run through the groove geotechnological cloth layer and hard layer sets up.
8. The anti-seepage structure for the polluted site as claimed in claim 1, wherein the first inserting strip is connected with the first anti-seepage film by adopting double seam heat seal welding, and the second inserting strip is connected with the second anti-seepage film by adopting double seam heat seal welding.
9. The construction method of the sealing structure of the polluted site is applicable to the anti-seepage structure of the polluted site as claimed in any one of claims 1 to 8, and is characterized by comprising the following steps of:
s100, arranging a protective seat and a pouring guide pipe:
fixing the lower end of the pouring guide pipe at the inner bottom of the protective seat, installing a balancing weight to the outer bottom of the protective seat, and lowering the protective seat and the pouring guide pipe to keep the verticality of the protective seat in the lowering process;
s200, assembling the first impermeable film and the second impermeable film to form an integral impermeable film:
assembling a first inserting strip and a second inserting strip, installing an expansion sealing strip between the first inserting strip and the second inserting strip, welding the first inserting strip to the first impermeable membrane, and welding the second inserting strip to the second impermeable membrane to form the integral impermeable membrane;
s300, putting the integral impermeable membrane:
synchronously lowering the integral impermeable membrane into the protective seat by utilizing a guide mounting frame;
s400, filling of a protective seat:
and filling a cementing material to the bottom of the protective seat, filling plastic concrete into the protective seat after the cementing material is solidified, and filling clay into the protective seat until the clay is flush with the upper edge of the protective seat after the plastic concrete is solidified.
10. The construction method of a sealing structure of a contaminated site according to claim 9, wherein in step S100:
a vertically through mounting ring is arranged in the protective seat, a rubber sleeve is arranged on the inner wall of the mounting ring, and the lower end of the pouring guide pipe extends into the rubber sleeve; the balancing weight is a rectangular hollow metal component.
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| RU2374386C1 (en) * | 2008-07-14 | 2009-11-27 | Открытое Акционерное Общество "Уральский Научно-Исследовательский И Проектный Институт Галургии" (Оао "Галургия") | Method for creation of antifiltration screen with geomembrane from polymer material |
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| CN109056838A (en) * | 2018-07-26 | 2018-12-21 | 上海远方基础工程有限公司 | Underground anti-seepage film plugs connector and its construction method |
| CN208870094U (en) * | 2018-07-26 | 2019-05-17 | 上海远方基础工程有限公司 | Underground anti-seepage film grafting connector |
| CN110424425A (en) * | 2019-07-25 | 2019-11-08 | 北京高能时代环境技术股份有限公司 | A kind of vertical seepage control earth-retaining device and its construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2374386C1 (en) * | 2008-07-14 | 2009-11-27 | Открытое Акционерное Общество "Уральский Научно-Исследовательский И Проектный Институт Галургии" (Оао "Галургия") | Method for creation of antifiltration screen with geomembrane from polymer material |
| CN102367672A (en) * | 2011-09-13 | 2012-03-07 | 北京高能时代环境技术股份有限公司 | Method for installing vertical soft barrier system based on soil-stone foundation |
| CN109056838A (en) * | 2018-07-26 | 2018-12-21 | 上海远方基础工程有限公司 | Underground anti-seepage film plugs connector and its construction method |
| CN208870094U (en) * | 2018-07-26 | 2019-05-17 | 上海远方基础工程有限公司 | Underground anti-seepage film grafting connector |
| CN110424425A (en) * | 2019-07-25 | 2019-11-08 | 北京高能时代环境技术股份有限公司 | A kind of vertical seepage control earth-retaining device and its construction method |
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| CN114439048B (en) | 2024-02-27 |
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