CN112095677A - Sanitary landfill prevention of seepage membrane connection structure and sanitary landfill - Google Patents
Sanitary landfill prevention of seepage membrane connection structure and sanitary landfill Download PDFInfo
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- CN112095677A CN112095677A CN202011016637.1A CN202011016637A CN112095677A CN 112095677 A CN112095677 A CN 112095677A CN 202011016637 A CN202011016637 A CN 202011016637A CN 112095677 A CN112095677 A CN 112095677A
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- impermeable membrane
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- sanitary landfill
- impermeable
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- 239000012528 membrane Substances 0.000 title claims abstract description 222
- 230000002265 prevention Effects 0.000 title abstract description 7
- 238000007789 sealing Methods 0.000 claims abstract description 47
- 238000004873 anchoring Methods 0.000 claims description 28
- 238000001125 extrusion Methods 0.000 claims description 15
- 238000003860 storage Methods 0.000 claims description 15
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 239000010813 municipal solid waste Substances 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 4
- -1 polyethylene Polymers 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 7
- 230000009977 dual effect Effects 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 18
- 229920001903 high density polyethylene Polymers 0.000 description 5
- 239000004700 high-density polyethylene Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000010791 domestic waste Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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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
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/202—Securing of slopes or inclines with flexible securing means
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a sanitary landfill impermeable membrane connecting structure and a sanitary landfill, relating to the technical field of sanitary landfills and comprising the following components: a reservoir impermeable membrane; the edge of the sealing impermeable membrane is connected with the reservoir impermeable membrane, and a closed landfill cavity is formed between the reservoir impermeable membrane and the sealing impermeable membrane; the reinforced impermeable membrane covers the upper sides of the reservoir impermeable membrane and the seal impermeable membrane, and two sides of the reinforced impermeable membrane are respectively connected with the reservoir impermeable membrane and the seal impermeable membrane; this sanitary landfill prevention of seepage membrane connection structure realizes dual prevention of seepage through setting up the enhancement prevention of seepage membrane that is connected with reservoir area prevention of seepage membrane and closing prevention of seepage membrane, simple structure, construction convenience, low cost.
Description
Technical Field
The invention belongs to the technical field of sanitary landfill sites, and particularly relates to an impermeable membrane connecting structure of a sanitary landfill site and the sanitary landfill site.
Background
The sanitary landfill site is used as a municipal solid waste disposal site, mainly solves the disposal problem of domestic waste generated in the production and the living of residents in a service range, and is sealed according to the requirements of the technical Specification for sealing the sanitary landfill site of the domestic waste GB51220-2017 when the sanitary landfill site reaches the design service life, or reaches the design use storage capacity, or is not used any more and stops landfill. In order to avoid the side leakage of leachate from a pile body above the dam crest of a reservoir area after the landfill closure to pollute the surrounding environment, the impermeable membrane of the landfill closure and the impermeable membrane of the reservoir area are generally required to be connected in the construction process of the landfill closure engineering, but the joint of the impermeable membrane is easy to break due to various reasons of construction quality, impermeable materials and external force damage, so that the problem of leakage of leachate through the joint or gap between the impermeable membrane of the landfill closure and the impermeable membrane of the reservoir area occurs in the operation and maintenance process of the landfill closure at the later stage.
Disclosure of Invention
The invention aims to provide a sanitary landfill impermeable membrane connecting structure and a sanitary landfill, aiming at overcoming the defects in the prior art, and the double impermeable is realized by arranging a reinforced impermeable membrane connected with a reservoir impermeable membrane and a closure impermeable membrane, and the sanitary landfill impermeable membrane connecting structure is simple in structure, convenient to construct and low in cost.
In order to achieve the above object, the present invention provides an impermeable membrane connecting structure for a sanitary landfill, comprising:
a reservoir impermeable membrane;
the edge of the sealing impermeable membrane is connected with the reservoir impermeable membrane, and a closed landfill cavity is formed between the reservoir impermeable membrane and the sealing impermeable membrane;
and the reinforced impermeable membrane covers the upper sides of the reservoir impermeable membrane and the seal impermeable membrane, and two sides of the reinforced impermeable membrane are respectively connected with the reservoir impermeable membrane and the seal impermeable membrane.
Optionally, the reservoir impermeable membrane and the closure impermeable membrane are extrusion welded.
Optionally, the reinforced impermeable membrane is welded with the sealing impermeable membrane in a heat sealing manner, and the reinforced impermeable membrane is welded with the reservoir impermeable membrane in a pressing manner.
Optionally, the thickness of the reinforcing impermeable membrane is the same as the thickness of the closure impermeable membrane.
The invention provides a sanitary landfill comprising:
the storage area comprises a storage area bottom and a side slope, and the interior of the storage area can contain landfill garbage;
the anti-seepage membrane connecting structure of the sanitary landfill site is characterized in that;
the reservoir region impermeable membrane covers the reservoir region bottom and the side slope and extends to the ground outside the side slope.
Optionally, an anchoring ditch is arranged around the reservoir area, and an anchoring ditch platform is arranged between the anchoring ditch and the upper end of the side slope.
Optionally, the edge of the reservoir impermeable membrane is fixed in the anchoring ditch, and the lower surface of the edge of the sealing impermeable membrane is connected with the reservoir impermeable membrane on the platform of the anchoring ditch.
Optionally, one side of the reinforced impermeable membrane is connected with the upper surface of the reservoir impermeable membrane on the anchoring ditch platform, and the other side of the reinforced impermeable membrane is connected with the upper surface of the edge of the closure impermeable membrane.
Optionally, the reservoir impermeable membrane, the closure impermeable membrane and the reinforcement impermeable membrane are polyethylene geomembranes.
Optionally, the thickness of the reservoir impermeable membrane is 1.5-2 mm, and the thickness of the seal impermeable membrane and the thickness of the reinforcing impermeable membrane are 1-2 mm.
The invention provides an anti-seepage membrane connecting structure of a sanitary landfill and the sanitary landfill, which have the following beneficial effects: the reinforced impermeable membrane connected with the reservoir impermeable membrane and the seal impermeable membrane is arranged to realize double impermeable; firstly, connecting a sealing impermeable membrane with a reservoir impermeable membrane by adopting extrusion welding to serve as a first heavy impermeable structure; secondly, in order to reduce or avoid the problem of leakage of leachate at the connection damage or gap between the sealing impermeable membrane and the reservoir impermeable membrane, a layer of reinforced impermeable membrane is additionally arranged on the sealing impermeable membrane and the reservoir impermeable membrane, the reinforced impermeable membrane is firstly connected with the sealing impermeable membrane in a heat-seal welding mode, and after the sealing impermeable membrane is welded with the reservoir impermeable membrane, the reinforced impermeable membrane is connected with the original reservoir impermeable membrane by extrusion welding, so that a second impermeable structure is formed; even if the sealing impermeable membrane and the reservoir impermeable membrane are damaged or leaked, the leakage pollution of leachate can be avoided due to the existence of the reinforced impermeable membrane; the anti-seepage membrane connecting structure of the sanitary landfill can avoid the side seepage of the leachate of the pile body above the dam crest of the landfill reservoir area to pollute the surrounding environment, has simple structure, extremely low investment and extremely easy implementation, and almost ignores the overall progress and investment of the sealing engineering.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
Fig. 1 shows a schematic construction of a sanitary landfill according to an embodiment of the invention.
Description of reference numerals:
1. a reservoir impermeable membrane; 2. sealing an impermeable membrane; 3. filling the cavity; 4. strengthening the anti-seepage film; 5. a reservoir area; 6. landfill of the rubbish; 7. side slope; 8. anchoring the ditch; 9. and (4) anchoring the ditch platform.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The invention provides an impermeable membrane connecting structure of a sanitary landfill, which comprises:
a reservoir impermeable membrane;
the edge of the sealing impermeable membrane is connected with the reservoir impermeable membrane, and a closed landfill cavity is formed between the reservoir impermeable membrane and the sealing impermeable membrane;
and the reinforced impermeable membrane covers the upper sides of the reservoir impermeable membrane and the seal impermeable membrane, and two sides of the reinforced impermeable membrane are respectively connected with the reservoir impermeable membrane and the seal impermeable membrane.
Specifically, the double anti-seepage structure is innovatively provided by the sanitary landfill closure anti-seepage film connecting structure, and the closure anti-seepage film and the reservoir area anti-seepage film are connected by adopting extrusion welding to serve as a first double anti-seepage structure; secondly, in order to reduce or avoid the problem of leakage of leachate at the connection damage or gap between the sealing impermeable membrane and the reservoir impermeable membrane, a layer of reinforced impermeable membrane is additionally arranged on the sealing impermeable membrane and the reservoir impermeable membrane, the reinforced impermeable membrane is firstly connected with the sealing impermeable membrane in a heat-seal welding mode, and after the sealing impermeable membrane is welded with the reservoir impermeable membrane, the reinforced impermeable membrane is connected with the original reservoir impermeable membrane by extrusion welding, so that a second impermeable structure is formed; even if the sealing impermeable membrane and the reservoir impermeable membrane are damaged or leaked, the leakage pollution of leachate can be avoided due to the existence of the reinforced impermeable membrane; the anti-seepage membrane connecting structure of the sanitary landfill can avoid the side seepage of the leachate of the pile body above the dam crest of the landfill reservoir area to pollute the surrounding environment, has simple structure, extremely low investment and extremely easy implementation, and almost ignores the overall progress and investment of the sealing engineering.
Optionally, the reservoir impermeable membrane is extrusion welded to the closure impermeable membrane.
Optionally, the reinforced impermeable film is welded with the sealing impermeable film in a heat sealing manner, and the reinforced impermeable film is welded with the storage impermeable film in a pressing manner.
Optionally, the thickness of the reinforcing impermeable membrane is the same as the thickness of the containment impermeable membrane.
In particular, the connection quality is improved.
The invention provides a sanitary landfill comprising:
the storage area comprises a storage area bottom and a side slope, and the interior of the storage area can contain landfill garbage;
the anti-seepage membrane connecting structure of the sanitary landfill site is characterized in that;
the reservoir impermeable membrane covers the reservoir bottom and the side slope and extends to the ground outside the side slope.
Specifically, the anti-seepage membrane connection structure of the sanitary landfill realizes double anti-seepage through a first heavy anti-seepage structure formed by connecting the sealing anti-seepage membrane with the reservoir area anti-seepage membrane and a second heavy anti-seepage structure formed by arranging a reinforced anti-seepage membrane connected with the reservoir area anti-seepage membrane and the sealing anti-seepage membrane; the side leakage of the leachate of the pile above the dam crest of the landfill reservoir area is avoided to pollute the surrounding environment.
Optionally, an anchoring ditch is arranged around the reservoir area, and an anchoring ditch platform is arranged between the anchoring ditch and the upper end of the side slope.
Specifically, the reservoir impermeable membrane is a rough HDPE geomembrane, is arranged at the reservoir bottom and side slopes of the landfill site in the construction process of the sanitary landfill site, and is fixed in anchoring ditches arranged at the periphery of the landfill site.
Optionally, the edge of the reservoir impermeable membrane is fixed in the anchoring ditch, and the lower surface of the edge of the closure impermeable membrane is connected with the reservoir impermeable membrane on the platform of the anchoring ditch.
Specifically, the sealing seepage-proofing film is an HDPE geomembrane, the side slope of the sealing stack body is a rough HDPE geomembrane, the top of the stack body is a smooth HDPE geomembrane, the sealing seepage-proofing film is connected with the original seepage-proofing film in the storage area in the sealing engineering construction process, and the connection mode is extrusion welding.
Optionally, one side of the reinforced impermeable membrane is connected with the upper surface of the reservoir impermeable membrane on the anchoring groove platform, and the other side of the reinforced impermeable membrane is connected with the upper surface of the edge of the closure impermeable membrane.
Specifically, the reinforced impermeable membrane is an HDPE geomembrane, the thickness of the reinforced impermeable membrane is preferably consistent with that of the sealing impermeable membrane, the width of the reinforced impermeable membrane is 600-1200 mm, the specific width is determined according to the reserved distance of a sanitary landfill anchoring ditch platform, the reinforced impermeable membrane is firstly connected with the sealing impermeable membrane by heat seal welding and then connected with an original reservoir area impermeable membrane in an extrusion welding mode.
Optionally, the reservoir impermeable membrane, the closure impermeable membrane and the reinforcement impermeable membrane are polyethylene geomembranes.
Optionally, the thickness of the reservoir region impermeable membrane is 1.5-2 mm, and the thickness of the seal impermeable membrane and the thickness of the reinforced impermeable membrane are 1-2 mm.
Examples
As shown in fig. 1, the present invention provides a sanitary landfill impermeable membrane connecting structure, comprising:
a reservoir impermeable membrane 1;
the sealing impermeable membrane 2 is connected with the edge of the sealing impermeable membrane 2 and the reservoir impermeable membrane 1, and a closed landfill cavity 3 is formed between the reservoir impermeable membrane 1 and the sealing impermeable membrane 2;
and the reinforced impermeable membrane 4 covers the upper sides of the reservoir impermeable membrane 1 and the seal impermeable membrane 2, and two sides of the reinforced impermeable membrane 4 are respectively connected with the reservoir impermeable membrane 1 and the seal impermeable membrane 2.
In this embodiment, the reservoir impermeable membrane 1 is extrusion welded with the closure impermeable membrane 2.
In the embodiment, the reinforced impermeable membrane 4 is welded with the sealing impermeable membrane 2 in a heat sealing way, and the reinforced impermeable membrane 4 is welded with the reservoir impermeable membrane 1 in an extrusion way.
In this embodiment, the thickness of the reinforcing impermeable membrane 4 is the same as that of the closure impermeable membrane 2.
The invention provides a sanitary landfill comprising:
the storage area 5 comprises a storage area bottom and a side slope 7, and the interior of the storage area 5 can contain landfill garbage 6;
the anti-seepage membrane connecting structure of the sanitary landfill site is characterized in that;
the reservoir impermeable membrane 1 covers the reservoir bottom and the side slope 7 and extends to the ground outside the side slope 7.
In this embodiment, an anchoring ditch 8 is arranged around the reservoir area 5, and an anchoring ditch platform 9 is arranged between the anchoring ditch 8 and the upper end of the side slope 7.
In this embodiment, the edge of the reservoir impermeable membrane 1 is fixed in the anchoring ditch 8, and the lower surface of the edge of the closure impermeable membrane 2 is connected with the reservoir impermeable membrane 1 on the anchoring ditch platform 9.
In this embodiment, one side of the reinforced impermeable membrane 4 is connected with the upper surface of the reservoir impermeable membrane 1 on the anchoring groove platform 9, and the other side of the reinforced impermeable membrane 4 is connected with the upper surface of the edge of the closure impermeable membrane 2.
In the present embodiment, the reservoir impermeable membrane 1, the closure impermeable membrane 2 and the reinforced impermeable membrane 4 are polyethylene geomembranes.
In the embodiment, the thickness of the reservoir region anti-seepage film 1 is 1.5-2 mm, and the thickness of the seal field anti-seepage film 2 and the thickness of the reinforced anti-seepage film 4 are 1-2 mm.
In conclusion, when the anti-seepage membrane connecting structure for the sanitary landfill is applied to the sanitary landfill, the reinforced anti-seepage membrane 4 is connected with the sealing anti-seepage membrane 2 by adopting a heat seal welding mode, and the welding seam quality is detected according to relevant specifications after welding is finished, so that the welding quality is ensured to be qualified. In the construction process of the sealing engineering anti-seepage system, firstly, the connection between the reservoir area anti-seepage film 1 and the sealing anti-seepage film 2 is realized in an extrusion welding mode, the extrusion welding seam is detected, then, the connection between the reservoir area anti-seepage film 1 and the reinforced anti-seepage film 4 is realized in the extrusion welding mode, the extrusion welding seam is detected, and the welding seam quality is ensured. The anti-seepage membrane connecting structure of the sanitary landfill can reduce or avoid the side seepage of the leachate of the pile above the 5 dam crest of the landfill reservoir area to pollute the surrounding environment, has simple structure and extremely low investment, is extremely easy to implement, and almost ignores the influence on the overall progress and the investment of the sealing engineering.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. An anti-seepage membrane connecting structure for a sanitary landfill is characterized by comprising:
a reservoir impermeable membrane;
the edge of the sealing impermeable membrane is connected with the reservoir impermeable membrane, and a closed landfill cavity is formed between the reservoir impermeable membrane and the sealing impermeable membrane;
and the reinforced impermeable membrane covers the upper sides of the reservoir impermeable membrane and the seal impermeable membrane, and two sides of the reinforced impermeable membrane are respectively connected with the reservoir impermeable membrane and the seal impermeable membrane.
2. The sanitary landfill impermeable membrane connecting structure according to claim 1, wherein the reservoir impermeable membrane and the closure impermeable membrane are extrusion welded.
3. The sanitary landfill impermeable membrane connecting structure according to claim 1, wherein the reinforcing impermeable membrane is heat-sealed with the sealing impermeable membrane, and the reinforcing impermeable membrane is extrusion-welded with the reservoir impermeable membrane.
4. The sanitary landfill impermeable membrane connecting structure according to claim 1, wherein the thickness of the reinforcing impermeable membrane is the same as that of the sealing impermeable membrane.
5. A sanitary landfill, comprising:
the storage area comprises a storage area bottom and a side slope, and the interior of the storage area can contain landfill garbage;
the sanitary landfill containment membrane connection structure of any one of claims 1 to 4;
the reservoir region impermeable membrane covers the reservoir region bottom and the side slope and extends to the ground outside the side slope.
6. The sanitary landfill according to claim 5, wherein an anchoring ditch is arranged around the reservoir area, and an anchoring ditch platform is arranged between the anchoring ditch and the upper end of the side slope.
7. The sanitary landfill according to claim 6, wherein the edge of the reservoir impermeable membrane is fixed in the anchoring ditch, and the lower surface of the edge of the closure impermeable membrane is connected with the reservoir impermeable membrane on the anchoring ditch platform.
8. The sanitary landfill according to claim 5, wherein one side of the reinforcing impermeable membrane is connected with the upper surface of the reservoir impermeable membrane on the anchoring ditch platform, and the other side of the reinforcing impermeable membrane is connected with the upper surface of the edge of the closure impermeable membrane.
9. The sanitary landfill according to claim 5, wherein the reservoir impermeable membrane, the closure impermeable membrane and the reinforcement impermeable membrane are polyethylene geomembranes.
10. The sanitary landfill according to claim 5, wherein the thickness of the reservoir impermeable membrane is 1.5-2 mm, and the thickness of the closure impermeable membrane and the thickness of the reinforcement impermeable membrane are 1-2 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011016637.1A CN112095677A (en) | 2020-09-24 | 2020-09-24 | Sanitary landfill prevention of seepage membrane connection structure and sanitary landfill |
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| CN202011016637.1A CN112095677A (en) | 2020-09-24 | 2020-09-24 | Sanitary landfill prevention of seepage membrane connection structure and sanitary landfill |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114809111A (en) * | 2022-07-01 | 2022-07-29 | 北京高能时代环境技术股份有限公司 | Whole seepage prevention structure of contaminated soil temporary storage yard |
| CN116411581A (en) * | 2023-06-09 | 2023-07-11 | 北京高能时代环境技术股份有限公司 | Composite seepage-proofing structure suitable for industrial solid waste landfill |
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