CN216640693U - Flood interception mechanism for sealing landfill - Google Patents
Flood interception mechanism for sealing landfill Download PDFInfo
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- CN216640693U CN216640693U CN202122588464.7U CN202122588464U CN216640693U CN 216640693 U CN216640693 U CN 216640693U CN 202122588464 U CN202122588464 U CN 202122588464U CN 216640693 U CN216640693 U CN 216640693U
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- flood
- ditch
- flood interception
- interception ditch
- landfill
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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 utility model relates to a flood interception mechanism for sealing a landfill site, wherein a landfill body in the landfill site is provided with a flood interception ditch, one side or two outward side walls of the flood interception ditch are propped against the outer edge of the landfill body, and the landfill body is matched with the flood interception ditch. According to the flood interception ditch, the cushion layer is arranged at the bottom of the flood interception ditch, and the compacted clay is backfilled at the periphery of the flood interception ditch, so that the main structure of the flood interception ditch is prevented from being in contact with the impermeable layer in the processes of binding steel bars and erecting templates, the integrity of an HDPE (high-density polyethylene) film is effectively ensured, and the rainwater drainage guiding effectiveness is ensured; a backfill area around the flood interception ditch forms a composite seepage-proofing structure by compacted clay and an HDPE film anchored below the clay, so that rainwater is effectively controlled to permeate into the garbage pile from the area; flood intercepting ditches are built in the trapezoidal sections, so that convenience of trench excavation construction and stability of trench side slopes are facilitated; the reinforcing steel bars are additionally arranged at the joint of the flood interception ditch wall and the bottom plate and at the top of the pool wall, so that the integrity and stability of the flood interception ditch are enhanced, and the influence on the sedimentation of the garbage pile body is effectively dealt with.
Description
Technical Field
The present invention relates to water supply; the technical field of drainage, in particular to a flood interception mechanism for sealing a landfill site.
Background
According to the technical specification for sealing the domestic garbage sanitary landfill site (GB 51220-2017), the landfill site is buried to the area with the design final site height of the landfill body or the area which is no longer used for containing garbage, the whole landfill site area after the landfill is stopped is sealed, and the sealing engineering is preferably carried out after the rapid settling period of the garbage landfill body.
The flood interception ditch is a water diversion canal which intercepts water flowing down from a slope and guides the water to other places. As a key ring in a sealing covering system, the flood intercepting ditch can discharge rainwater out of a landfill as soon as possible and smoothly, reduce the water quantity entering a landfill area and the yield of landfill leachate, reduce the hydraulic load of a landfill body, facilitate the stability of the landfill body and reduce the operation cost of treating the leachate in the landfill.
In the prior art, an HDPE film which has a main anti-seepage function when being covered at a sealing field is generally laid at the bottom of a flood interception ditch to have an anchoring function, and the flood interception ditch is generally designed to be directly contacted with the HDPE film, so that the HDPE film is easily damaged in the construction process, and the risk of rainwater leaking into a garbage stack body exists; meanwhile, the flood intercepting ditches distributed on the garbage dump are easily influenced by the settlement of the dump, and crack and damage phenomena occur, so that the flood intercepting ditches of grouted stones and concrete structures are difficult to exert the water guiding and draining effect for a long time, and the risk of garbage leachate pollution exists.
SUMMERY OF THE UTILITY MODEL
The utility model solves the problems in the prior art, provides the flood interception mechanism with an optimized structure for sealing the landfill site, and overcomes the defects that an HDPE film is easily damaged in the construction process of a flood interception ditch and the adverse effect of garbage dump settlement on the HDPE film.
The utility model adopts the technical scheme that the flood interception mechanism for sealing the landfill site comprises a garbage pile body in the landfill site, the flood interception mechanism comprises a flood interception ditch, one side or two outward side walls of the flood interception ditch are abutted against the outer edge of the garbage pile body, and the garbage pile body and the flood interception ditch are arranged in a matched mode.
Preferably, the flood intercepting ditch comprises a plain concrete cushion layer, and a steel concrete member is arranged on the plain concrete cushion layer.
Preferably, the cross-section of the steel-concrete member is a U-shaped structure, and the bottom surface of the steel-concrete member and the top surface of the plain concrete cushion layer are integrally arranged.
Preferably, any garbage pile body is externally coated with an impermeable layer.
Preferably, a geotechnical composite drainage net is arranged by matching the garbage pile body and the impermeable layer.
Preferably, the top of the side edge of any garbage pile body is matched with the side edge of the flood interception ditch.
Preferably, a slope structure is arranged between the garbage pile body and the flood intercepting ditch.
Preferably, the tops of one side or two sides of the flood interception ditch are matched with the covering structure on the garbage heap body.
Preferably, the lateral part of covering structure orientation cut flood ditch is the slope structure, slope structure supports locates the lateral wall top of cutting flood ditch.
Preferably, the covering structure comprises a greening soil layer, a vegetation layer is arranged on the greening soil layer, and an impermeable layer is arranged at the bottom of the greening soil layer.
The utility model relates to a flood interception mechanism with an optimized structure for sealing a landfill site, wherein a flood interception ditch is arranged at a garbage pile body in the landfill site, and one side or two outward side walls of the flood interception ditch are propped against the outer edge of the garbage pile body so as to match the garbage pile body with the flood interception ditch.
The utility model has the beneficial effects that:
(1) the flood interception ditch is provided with a cushion layer at the bottom and compacted clay backfilled at the periphery, so that the main structure of the flood interception ditch is prevented from being contacted with a main impermeable layer HDPE film in the processes of binding reinforcing steel bars and erecting a template, the integrity of the HDPE film is effectively ensured, and the effectiveness of rainwater drainage guide is ensured;
(2) in the backfill area around the flood interception ditch, a composite seepage-proofing structure is formed by compacted clay and HDPE films anchored below the clay, so that rainwater is effectively controlled to permeate into the garbage pile body from the area
(3) The flood intercepting ditches are built in the trapezoidal sections, so that convenience of excavation construction of the ditches and stability of ditch side slopes are facilitated;
(4) through set up the reinforcing bar at handing-over department, the top of pool wall of intercepting flood ditch wall and bottom plate, strengthen and cut the wholeness and the stability of flood ditch, effectively deal with the influence that the rubbish heap body subsides to it.
Drawings
FIG. 1 is a schematic structural view of a flood interception mechanism of the present invention;
fig. 2 is a schematic structural view of the flood interception ditch of the utility model.
Detailed Description
The present invention is described in further detail with reference to the following examples, but the scope of the present invention is not limited thereto.
The utility model relates to a flood interception mechanism for sealing a landfill site, which comprises a garbage stack body 3 in the landfill site, wherein the flood interception mechanism comprises a flood interception ditch 1, one side or two outward side walls 1-1 of the flood interception ditch 1 are abutted to the outer edge of the garbage stack body 3, and the garbage stack body 3 is matched with the flood interception ditch 1.
The flood interception ditch 1 comprises a plain concrete cushion layer 1-2, and a steel concrete member 1-3 is arranged on the plain concrete cushion layer 1-2.
The section of the steel concrete member 1-3 is U-shaped structure, the bottom surface of the steel concrete member 1-3 and the top surface of the plain concrete cushion layer 1-2 are integrated.
In the utility model, the flood interception ditch 1 is built on the garbage pile body 3, and rainwater and the like accumulated at a covering structure on the flood interception ditch can be ensured to smoothly fall into the flood interception ditch 1 and be discharged.
In the utility model, the flood interception ditch 1 consists of steel concrete members 1-3 and plain concrete cushion layers 1-2, wherein reinforcing steel bars are additionally arranged at the joint of the wall of the flood interception ditch 1 and a bottom plate and the top of the wall of a pool, so that the integrity and stability of the flood interception ditch are enhanced, and the influence on the settlement of a garbage pile body 3 is effectively responded, particularly, each corner point and two vertical surfaces of a U shape and the position of a planar middle shaft are included; an implementation mode is given, reinforcing steel bars are arranged at two corners and top angles, the side wall 1-1 perpendicular to the section of the flood interception ditch 1 and the bottom plate reinforcing steel bar are arranged in 15cm, and the side wall 1-1 parallel to the section of the flood interception ditch 1 and the bottom plate reinforcing steel bar are arranged in 20 cm.
Any garbage pile body 3 is coated with an impermeable layer 5.
And a geotechnical composite drainage net 4 is arranged by matching with the garbage pile 3 and the impermeable layer 5.
The tops of one side or two sides of the flood interception ditch 1 are matched with the covering structure on the garbage pile body 3.
The lateral part of the covering structure facing the flood intercepting ditch 1 is a slope structure, and the slope structure is propped against the top of the lateral wall 1-1 of the flood intercepting ditch 1.
The covering structure comprises a greening soil layer 6, a vegetable layer 7 is arranged on the greening soil layer 6, and an impermeable layer 5 is arranged at the bottom of the greening soil layer 6.
In the utility model, in order to prevent rainwater and surrounding surface water from permeating into the garbage heap body 3, the rainwater is intercepted and guided and drained through the covering structure, and the guided and drained rainwater is drained into the flood intercepting ditch 1 with compacted clay 2 filled at the periphery, so that the generation of seepage filtrate in the garbage heap body 3 is reduced, the hydraulic load is reduced, and the stability of the garbage heap body 3 is controlled.
In the utility model, the garbage heap 3 and the impermeable layer 5 are matched to be provided with the geotechnical composite drainage network 4, specifically, the geotechnical composite drainage network 4 at the garbage heap 3 is in a two-layer structure, one layer is positioned between the garbage heap 3 and the impermeable layer 5 (HDPE film) and is used as a gas guide layer which mainly ensures that landfill gas in the garbage heap 3 can be smoothly guided and discharged to a landfill gas guide and discharge facility (gas permeability) and protects the HDPE film from being damaged by irregular and sharp garbage, and the other layer is positioned outside (on) the impermeable layer 5 (HDPE film) and is used as a water guide layer which is finally connected to the edge of the flood intercepting ditch 1.
In the utility model, the covering structure mainly comprises a gas guide layer (geotechnical composite drainage network 4), an impermeable layer 5, a drainage layer (geotechnical composite drainage network 4), a greening soil layer 6 and a vegetation layer 7 which are sequentially arranged from bottom to top, wherein the impermeable layer 5 generally adopts an HDPE film.
In the utility model, the anti-seepage layer 5 is used for anti-seepage protection of the garbage pile body 3, and the anti-seepage layer 5 is generally made of HDPE film.
In the utility model, generally, the geotechnical composite drainage network 4 is arranged below a greening soil layer 6, and the greening soil layer 6 is positioned at the outermost layer and is used for planting in field-closing greening.
The top of the side edge of any garbage pile body 3 is matched with the side edge of the flood interception ditch 1.
A slope structure is arranged between the garbage pile body 3 and the flood intercepting ditch 1.
In the utility model, the slope structure between the garbage heap body 3 and the flood intercepting ditch 1 can be generally filled with compacted clay 2.
In the present invention, in order to ensure effective drainage, excavation is generally performed according to the size of the flood intercepting ditch 1, so that the edge of the upper geocomposite drainage network 4 is abutted against the top edge of the garbage pile 3 on the structure.
In the utility model, the slope structure between the garbage pile body 3 and the flood intercepting ditch 1 is a trapezoidal section, and the method has at least two advantages, wherein one advantage is that the convenience of excavation construction of a groove and the stability of a groove side slope are facilitated, and the periphery of the trapezoidal section is backfilled with compacted clay 2, so that the contact between the main structure of the flood intercepting ditch 1 and a main impermeable layer 5 HDPE film in the processes of binding reinforcing steel bars and erecting templates can be effectively avoided.
Claims (10)
1. A cut off flood mechanism for landfill yard closing field, include the rubbish heap body in the landfill yard, its characterized in that: the flood intercepting mechanism comprises a flood intercepting ditch, one side or two outward side walls of the flood intercepting ditch are abutted to the outer edge of the garbage pile body, and the garbage pile body and the flood intercepting ditch are arranged in a matched mode.
2. A flood interception mechanism for a landfill yard according to claim 1, wherein: the flood interception ditch comprises a plain concrete cushion layer, and a steel concrete member is arranged on the plain concrete cushion layer.
3. A flood interception mechanism for a landfill yard according to claim 2, wherein: the cross section of the steel concrete member is of a U-shaped structure, and the bottom surface of the steel concrete member and the top surface of the plain concrete cushion layer are integrally arranged.
4. A flood interception mechanism for a landfill yard according to claim 1, wherein: any garbage pile body is coated with an impermeable layer.
5. A flood interception mechanism for a landfill yard according to claim 4, wherein: and a geotechnical composite drainage net is arranged by matching with the garbage pile body and the impermeable layer.
6. A flood interception mechanism for a landfill yard according to claim 1, wherein: the top of the side edge of any garbage pile body is matched with the side edge of the flood interception ditch.
7. A flood interception mechanism for a landfill yard according to claim 1 or 6, wherein: a slope structure is arranged between the garbage pile body and the flood intercepting ditch.
8. A flood interception mechanism for a landfill yard according to claim 1, wherein: the tops of one side or two sides of the flood interception ditch are matched with the covering structure on the garbage pile body.
9. A flood interception mechanism for a landfill yard according to claim 8, wherein: the lateral part of the covering structure towards the flood intercepting ditch is of a slope structure, and the slope structure is abutted to the top of the lateral wall of the flood intercepting ditch.
10. A flood interception mechanism for a landfill yard according to claim 8 or 9, wherein: the covering structure comprises a greening soil layer, a vegetable layer is arranged on the greening soil layer, and an impermeable layer is arranged at the bottom of the greening soil layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122588464.7U CN216640693U (en) | 2021-10-27 | 2021-10-27 | Flood interception mechanism for sealing landfill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122588464.7U CN216640693U (en) | 2021-10-27 | 2021-10-27 | Flood interception mechanism for sealing landfill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216640693U true CN216640693U (en) | 2022-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122588464.7U Active CN216640693U (en) | 2021-10-27 | 2021-10-27 | Flood interception mechanism for sealing landfill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216640693U (en) |
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2021
- 2021-10-27 CN CN202122588464.7U patent/CN216640693U/en active Active
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