CN216839587U - Double-pipe double-layer pipe film-penetrating anti-seepage structure of landfill anti-seepage system - Google Patents
Double-pipe double-layer pipe film-penetrating anti-seepage structure of landfill anti-seepage system Download PDFInfo
- Publication number
- CN216839587U CN216839587U CN202123018100.1U CN202123018100U CN216839587U CN 216839587 U CN216839587 U CN 216839587U CN 202123018100 U CN202123018100 U CN 202123018100U CN 216839587 U CN216839587 U CN 216839587U
- Authority
- CN
- China
- Prior art keywords
- pipe
- membrane
- hdpe
- double
- seepage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Laminated Bodies (AREA)
Abstract
The utility model relates to a double-barrelled stringing membrane seepage prevention structure of landfill anti-seepage system sets up a foundation ditch on the level land, and this structure includes: the device comprises a foundation pit bottom, a platform, a Z-shaped PE pipeline, an HDPE main membrane, an HDPE membrane, a stainless steel hoop, extrusion welding and clay; the utility model discloses the innovation adopts oblique symmetrical arrangement, increases double-barrelled net width from 0.4 ~ 0.6m to 1.2 ~ 1.5m, has increased the construction space of tub pad by a wide margin, has reduced tub pad construction degree of difficulty, has improved the maneuverability and the guarantee degree of tub pad structure.
Description
Technical Field
The utility model belongs to the seepage prevention structure field of domestic waste landfill especially involves a tub membrane penetration seepage prevention structure of two retes of double-pipe.
Background
The most core part of domestic garbage landfill sites, industrial solid waste landfill sites and hazardous waste landfill sites is an anti-seepage system, and the most common anti-seepage material at home and abroad at present is HDPE geomembrane. The other main parts of the landfill are a groundwater drainage system and a leachate drainage system, and the core material of the drainage structure is an HDPE pipeline. The situation that HDPE films and HDPE pipes are intersected inevitably exists in a landfill site, and the situation that percolate guide and discharge pipes penetrate through impermeable films often exists in the design and construction of the landfill site.
For large-scale landfill sites, 2 main percolate discharge pipes are usually arranged, and each main percolate discharge pipe is used for collecting percolate in different areas of the landfill site. The position of the pipe membrane penetrating is the weakest link of the whole anti-seepage system, and the double-pipe membrane penetrating needs to be made into a whole in order to reduce the number of the weak links of the pipe membrane penetrating.
Traditional tub of wearing membrane structure is individual layer "horn mouth" diaphragm structural style, and inhomogeneous stress easily leads to the condition that diaphragm self broke or produced the crack between diaphragm and the pipeline, owing to be the individual layer diaphragm for the safety guarantee degree is lower, in case the diaphragm appears damaged, huge leak will appear in the seepage prevention system.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the membrane seepage prevention structure is weak due to the fact that a double-pipe double-layer pipe membrane penetrating structure is arranged by aiming at the situation that a double-row seepage pipeline of a landfill site passes a seepage prevention membrane.
The utility model discloses a concrete implementation technical scheme as follows:
the utility model provides a double-barrelled double-layer pipe of landfill site anti-seepage system wears membrane anti-seepage structure, sets up a foundation ditch on the level land, and this structure includes: the device comprises a pit bottom 1, a platform 2, a Z-shaped PE pipeline 3, an HDPE main membrane 4, an HDPE diaphragm 5, a stainless steel hoop 6, an extrusion welding 7 and clay 8;
the bottom 1 of the foundation pit is a regular polygon, the width is 2.5-3.0 m, the length is 3.0-3.5 m, and the regular polygon is used as the foundation of the Z-shaped PE pipeline 3; a platform 2 is arranged in the middle of the foundation pit side slope, the width of the platform is 0.5-1.0 m, and the platform is used as a welding platform for the HDPE diaphragm 5. The HDPE membrane 5 can be used as a welding material for the upper layer of the bell-mouthed pipe to penetrate through the membrane; the HDPE main film 4 is used as a welding material for the next layer of the horn-shaped tube through film; the ends of the upper and lower bellmouthes and the PE pipeline are sealed by extrusion welding 7, and then fixed and fastened by using a stainless steel hoop 6; thereby forming a double-tube through-film structure. Clay 8 and compaction are backfilled respectively in the upper, middle and lower three-layer gap of double-deck HDPE membrane, require the compaction coefficient not to be less than 0.92, traditional individual layer structure compares, the utility model discloses the membrane structure is worn to the double-deck pipe can realize the function of similar "compound seepage prevention structure of double-deck, and the prevention of seepage effect improves by a wide margin. The HDPE main membrane 4 and the HDPE membrane 5 are made of the same material and are made of HDPE materials.
The Z-shaped PE pipeline 3 is a main row pipe of a percolate seepage guiding body, 2 pipelines are arranged, the center distance of two pipes is not more than 1m generally for saving the material quantity of the seepage guiding body, the net width of the two pipes is 0.4-0.6 m after the pipe diameter is removed, and the construction space of a conventional single pipe for penetrating the membrane needs to be more than 0.5m, so that a double-pipe membrane penetrating structure cannot be constructed if the traditional two-pipe layout design is adopted.
The utility model discloses the innovation adopts oblique symmetrical arrangement, increases double-barrelled net width from 0.4 ~ 0.6m to 1.2 ~ 1.5m, has increased the construction space of tub pad by a wide margin, has reduced tub pad construction degree of difficulty, has improved the maneuverability and the guarantee degree of tub pad structure.
Drawings
Fig. 1 is the diaphragm penetration anti-seepage structure chart of the double-pipe double-layer pipe of the anti-seepage system of the landfill.
FIG. 2 is a sectional view taken along line A-A.
FIG. 3 is a sectional view taken along line B-B.
Wherein, 1, pit bottom; 2, a platform; 3 'Z' -shaped PE pipeline; a 4HDPE main film; 5HDPE membranes; 6, a stainless steel hoop; 7, extrusion welding; 8 Clay.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the field embodiments.
As shown in fig. 1, fig. 2 and fig. 3, a double-pipe double-layer pipe membrane penetration seepage prevention structure of a landfill seepage prevention system is a foundation pit arranged on a flat ground, and the structure comprises: the device comprises a pit bottom 1, a platform 2, a Z-shaped PE pipeline 3, an HDPE main membrane 4, an HDPE diaphragm 5, a stainless steel hoop 6, an extrusion welding 7 and clay 8;
the bottom 1 of the foundation pit is a regular polygon, the width is 2.5-3.0 m, the length is 3.0-3.5 m, and the regular polygon is used as the foundation of the Z-shaped PE pipeline 3; a platform 2 is arranged in the middle of the foundation pit side slope, the width of the platform is 0.5-1.0 m, and the platform is used as a welding platform for the HDPE diaphragm 5. The HDPE membrane 5 can be used as a welding material for the upper layer of the bell-mouthed pipe to penetrate through the membrane; the HDPE main film 4 is used as a welding material for the next layer of bell-mouthed tube through film; the ends of the upper and lower bellmouthes and the PE pipeline are sealed by extrusion welding 7, and then fixed and fastened by using a stainless steel hoop 6; thereby forming a double-tube through-film structure. Clay 8 and compaction are backfilled respectively in the upper, middle and lower three-layer gap of double-deck HDPE membrane, require the compaction coefficient not to be less than 0.92, traditional individual layer structure compares, the utility model discloses the membrane structure is worn to the double-deck pipe can realize the function of similar "compound seepage prevention structure of double-deck, and the prevention of seepage effect improves by a wide margin. The HDPE main membrane 4 and the HDPE membrane 5 are made of HDPE materials.
The Z-shaped PE pipeline 3 is a main row pipe of a percolate seepage guiding body, 2 pipelines are arranged, the center distance of two pipes is not more than 1m generally for saving the material quantity of the seepage guiding body, the net width of the two pipes is 0.4-0.6 m after the pipe diameter is removed, and the construction space of a conventional single pipe for penetrating the membrane needs to be more than 0.5m, so that a double-pipe membrane penetrating structure cannot be constructed if the traditional two-pipe layout design is adopted. The utility model discloses the innovation adopts oblique symmetrical arrangement, increases double-barrelled net width from 0.4 ~ 0.6m to 1.2 ~ 1.5m, has increased the construction space of tub pad by a wide margin, has reduced tub pad construction degree of difficulty, has improved the maneuverability and the guarantee degree of tub pad structure.
Example 1
Firstly, arranging a foundation pit on a flat ground, wherein the total depth is 2.0m, the length of the foundation pit is 3.0m, and the width of the foundation pit is 2.5 m; a platform is arranged on the slope surface, the depth of the platform is 0.5m, and the width of the platform is 0.5 m; the end of the embedded main calandria is exposed in the foundation pit, and the length direction of the foundation pit is parallel to the axis of the main calandria. The center distance of the two pipelines is 0.8m, and the ends are staggered by 1.0m forward and backward to ensure that the center distance of the pipeline ends is 1.2m and reserve enough space for the pipe membrane penetrating construction.
The vertical PE pipe and the horizontal PE pipe are connected into a Z-shaped PE pipe through 2 PE pipe 90-degree elbows, the Z-shaped PE pipe is fixed by adopting temporary measures, a lower clay layer is backfilled and compacted, and the requirement of the compaction coefficient is more than 0.92.
Extending the HDPE main film to the surface of the backfilled bottom clay layer, and performing monorail welding sealing and fixing and fastening by a stainless steel hoop by adopting a horn-shaped pipe to penetrate the film and a PE pipeline. And backfilling the middle clay layer on the main film until the height of the middle clay layer is consistent with that of the platform, ensuring that the clay is tightly attached to the HDPE main film without leaving a gap during backfilling, and ensuring that the clay compaction coefficient requirement reaches more than 0.92.
And a HDPE film is laid on the middle clay layer and is used as a main material for the upper horn mouth pipe penetrating film, and the upper pipe penetrating film is welded with the PE pipeline in a monorail mode and sealed and is fixed and fastened by a stainless steel hoop. Finally, backfilling a top clay layer on the HDPE membrane to a position slightly higher than the level ground, covering the pipeline elbow, ensuring that the clay is tightly attached to the HDPE membrane and the PE pipeline without leaving a gap during backfilling, and ensuring that the clay compaction coefficient is required to be more than 0.92.
Example 2
Firstly, arranging a foundation pit on a flat ground, wherein the total depth is 3.0m, the length of the foundation pit is 3.5m, and the width of the foundation pit is 3.0 m; a platform is arranged on the slope surface, the depth of the platform is 1.0m, and the width of the platform is 1.0 m; the end of the embedded main calandria is exposed in the foundation pit, and the length direction of the foundation pit is parallel to the axis of the main calandria. The center distance of the two pipelines is 1.0m, and the ends are staggered by 1.2m in the front-back direction to ensure that the center distance of the ends of the pipelines is 1.5m and reserve enough space for the pipe membrane penetrating construction.
The vertical PE pipe and the horizontal PE pipe are connected into a Z-shaped PE pipeline through 2 PE pipe 90-degree elbows, the pipeline is fixed by adopting temporary measures, a lower clay layer is backfilled and compacted, and the compaction coefficient requirement is over 0.92.
Extending the HDPE main membrane to the surface of the backfilled bottom clay layer, and adopting a horn-shaped tube to penetrate the membrane and the PE pipeline for single-rail welding sealing and fixing and fastening by a stainless steel hoop. And backfilling the middle clay layer on the main film until the height of the middle clay layer is consistent with that of the platform, ensuring that the clay is tightly attached to the HDPE main film without leaving a gap during backfilling, and ensuring that the clay compaction coefficient requirement reaches more than 0.92.
And a HDPE film is laid on the middle clay layer and is used as a main material for the upper horn mouth pipe penetrating film, and the upper pipe penetrating film is welded with the PE pipeline in a monorail mode and sealed and is fixed and fastened by a stainless steel hoop. Finally, backfilling a top clay layer on the HDPE membrane to a position slightly higher than the level ground, covering the pipeline elbow, ensuring that the clay is tightly attached to the HDPE membrane and the PE pipeline without leaving a gap during backfilling, and ensuring that the clay compaction coefficient is required to be more than 0.92.
Example 3
Firstly, arranging a foundation pit on a flat ground, wherein the total depth is 2.5m, the length of the foundation pit is 3.2m, and the width of the foundation pit is 2.8 m; a platform is arranged on the slope surface, the depth of the platform is 0.8m, and the width of the platform is 0.8 m; the end of the embedded main exhaust pipe is exposed in the foundation pit, and the length direction of the foundation pit is parallel to the axis of the main exhaust pipe. The center distance of the two pipelines is 0.9m, and the ends are staggered by 1.1m forward and backward to ensure that the center distance of the ends of the pipelines is 1.25m and reserve enough space for the construction of pipe-through membranes.
The vertical PE pipe and the horizontal PE pipe are connected into a Z-shaped PE pipe through 2 PE pipe 90-degree elbows, the Z-shaped PE pipe is fixed by adopting temporary measures, a lower clay layer is backfilled and compacted, and the requirement of the compaction coefficient is more than 0.92.
Extending the HDPE main membrane to the surface of the backfilled bottom clay layer, and adopting a horn-shaped tube to penetrate the membrane and the PE pipeline for single-rail welding sealing and fixing and fastening by a stainless steel hoop. And backfilling the middle clay layer on the main film until the height of the middle clay layer is consistent with that of the platform, ensuring that the clay is tightly attached to the HDPE main film without leaving a gap during backfilling, and ensuring that the clay compaction coefficient requirement reaches more than 0.92.
And a HDPE film is laid on the middle clay layer and is used as a main material for the upper horn mouth pipe penetrating film, and the upper pipe penetrating film is welded with the PE pipeline in a monorail mode and sealed and is fixed and fastened by a stainless steel hoop. Finally, backfilling a top clay layer on the HDPE membrane to a position slightly higher than the level ground, covering the pipeline elbow, ensuring that the clay is tightly attached to the HDPE membrane and the PE pipeline without leaving a gap during backfilling, and ensuring that the clay compaction coefficient is required to be more than 0.92.
Claims (3)
1. The utility model provides a double-barrelled double-deck pipe of landfill site anti-seepage system pierces membrane anti-seepage structure which characterized in that sets up a foundation ditch on the level land, and this structure includes: the device comprises a foundation pit bottom, a platform, a Z-shaped PE pipeline, an HDPE main membrane, an HDPE membrane, a stainless steel hoop, extrusion welding and clay;
the bottom of the foundation pit is a regular polygon, the width of the foundation pit is 2.5-3.0 m, the length of the foundation pit is 3.0-3.5 m, and the foundation pit is used as a foundation of a Z-shaped PE pipeline; a platform is arranged in the middle of the foundation pit side slope, the width of the platform is 0.5-1.0 m, and the platform is used as a welding platform for the HDPE membrane; the HDPE membrane is used as a welding material for the upper layer of the bell-mouth tube to penetrate through the membrane; the HDPE main film is used as a welding material for the next layer of the bell-mouth tube to penetrate through the film; the ends of the upper and lower bellmouthes and the PE pipeline are both in extrusion welding sealing structures and are fixedly fastened through stainless steel hoops; forming a double-layer tube membrane penetrating structure; backfill clay is compacted in gaps of the upper layer, the middle layer and the lower layer of the double-layer HDPE film.
2. The dual-pipe dual-layer-pipe through-film impermeable structure of the landfill impermeable system of claim 1, wherein the HDPE main film and the HDPE membrane are made of the same material and are made of HDPE materials.
3. The double-pipe double-layer pipe penetrating film seepage-proofing structure of the landfill seepage-proofing system according to claim 1, wherein the Z-shaped PE pipeline is a main drainage pipe of a percolate seepage-guiding body, 2 pipelines are arranged, the center distance between the two pipes is not more than 1m, and the clear width of the two pipes is 0.4-0.6 m when the pipe diameters are removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123018100.1U CN216839587U (en) | 2021-12-03 | 2021-12-03 | Double-pipe double-layer pipe film-penetrating anti-seepage structure of landfill anti-seepage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123018100.1U CN216839587U (en) | 2021-12-03 | 2021-12-03 | Double-pipe double-layer pipe film-penetrating anti-seepage structure of landfill anti-seepage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216839587U true CN216839587U (en) | 2022-06-28 |
Family
ID=82105216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123018100.1U Active CN216839587U (en) | 2021-12-03 | 2021-12-03 | Double-pipe double-layer pipe film-penetrating anti-seepage structure of landfill anti-seepage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216839587U (en) |
-
2021
- 2021-12-03 CN CN202123018100.1U patent/CN216839587U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104110042B (en) | A kind of anti-permeation method of discarded object leachate collection pond and structure | |
| CN203924117U (en) | A kind of concrete perpendicular walls pond plastic film mulch leakage preventing structure | |
| CN216839587U (en) | Double-pipe double-layer pipe film-penetrating anti-seepage structure of landfill anti-seepage system | |
| CN101890420B (en) | Landfill gas collecting method and system thereof | |
| CN101229547B (en) | Gathering system used on landfill site landfill gas guiding and exhausting | |
| CN204657079U (en) | Overlay film gas gathering system | |
| CN111636539B (en) | Assembled longitudinal and transverse guide drainage system for refuse landfill and construction method thereof | |
| CN212053102U (en) | Rainwater collecting and guiding system for refuse landfill | |
| CN211312746U (en) | Refuse landfill field diversion and drainage device | |
| CN210066836U (en) | HDPE pipe passes through structure of ardealite dam | |
| CN105317034A (en) | Sand drain system used for vacuum pre-pressing treatment of marine silt soil and construction method | |
| CN209810895U (en) | Horizontal drainage guide system of refuse landfill | |
| CN216475120U (en) | Diversion seepage-proofing structure for culvert pipe of temporary cofferdam | |
| CN201713924U (en) | Leachate guide exhaust pipe device | |
| CN214883903U (en) | Landfill yard sealing system with large space for water drainage and air guide | |
| CN201679081U (en) | Slope leachate guiding and draining well | |
| CN109750656A (en) | A kind of homogeneous earth dam downstream overlapping draining blind pipe and construction method | |
| CN205100203U (en) | A sand well system that is used for sea native vacuum preloading of silt to handle | |
| CN211057761U (en) | Unpowered biogas guiding and discharging device | |
| CN217439135U (en) | Leachate guiding device at lowest point after landfill closure | |
| CN109322369B (en) | Bolt type landfill leachate pipe dam penetrating structure | |
| CN204385700U (en) | Be applicable to dewatering installation after the film of geomembrane anti-seepage | |
| CN209129123U (en) | A kind of bolt type landfill percolate pipe wears dam structure | |
| CN216475367U (en) | Water storage tank | |
| CN216640693U (en) | Flood interception mechanism for sealing landfill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |