CN103831973A - Garbage landfill site HDPE geomembrane welding method - Google Patents
Garbage landfill site HDPE geomembrane welding method Download PDFInfo
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- CN103831973A CN103831973A CN201110456821.2A CN201110456821A CN103831973A CN 103831973 A CN103831973 A CN 103831973A CN 201110456821 A CN201110456821 A CN 201110456821A CN 103831973 A CN103831973 A CN 103831973A
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- hdpe geomembrane
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Abstract
The present invention discloses a garbage landfill site HDPE geomembrane welding method, which comprises: (1) setting the shear and peel strength of a HDPE geomembrane hot-melting welding piece; (2) carrying out hot-melting welding, wherein compressed air is blown between an upper sheet and a lower sheet to form a compressed air channel, welding seams are formed on the left edge and the right edge of the compressed air channel, hot-melting is performed on two HDPE geomembranes, rapid butt joint is performed after achieving the temperature, and welding is performed on the welding seam position, wherein the upper sheet and the lower sheet are overlapped; and (3) carrying out inspection and repair, wherein the HDPE geomembrane completing the hot-melting welding is checked, the damage position of the spread HDPE geomembrane is checked, the spread HDPE geomembrane is cut if the damage position of the spread HDPE geomembrane is more than 10% of the width of each HDPE geomembrane, and re-spreading is performed. According to the present invention, the compressed air is blown in the middle, and the excess material is cut and tore after completing the spreading, such that the welding seam tearing can not be generated, and the repair cost is reduced.
Description
Technical field
The present invention relates to a kind of method at refuse landfill welded H DPE geomembrane, belong to environmental technology field.
Background technology
Refuse landfill reservoir area is normally built on the acclive landform of tool, the terrain slope of reservoir area body exterior is that nature is downward, include seepage control system and guide system, seepage control system refer in the body of reservoir area and reservoir area around substrate soil upper berth establish impervious material, prevent the percolate secondary pollution that permeates the ground; Guide system refers to by laying two-layer pipeline, guide substrate soil gathers because build refuse landfill reservoir area respectively underground water and percolate.
HDPE geomembrane is the membrane structure of refuse landfill reservoir area seepage control system, anti-seepage effect is good, existing hot melt bridging arrangement weld seam after welding completes is easily torn, if tearing, again lays causing weld seam, or seepage is serious, need a large amount of manpower and materials to keep in repair, follow-up maintenance cost is high.
Summary of the invention
The invention provides a kind of welding method of refuse landfill HDPE geomembrane, smooth welded seam, is difficult for tearing, and meets and shears and disbonded test, reduces maintenance cost.
The present invention realizes by following technical scheme:
A welding method for refuse landfill HDPE geomembrane is to realize by following step:
(1) shearing and the peel strength of setting HDPE geomembrane thermofussion welding fitting;
(2) sweat soldering, overlap joint upper slice and between lower, blast compressed air, form compressed air channel, form weld seam at described compressed air channel the right and left, two HDPE geomembranes are carried out to hot melt, after arrival temperature, dock rapidly, and weld in described commissure;
(3) check and repair, the HDPE geomembrane after sweat soldering is completed checks, checks the damage part of the HDPE geomembrane of laying, and damages part and is greater than the more than 10% of every HDPE geomembrane width, this section is sheared, and again lays.
Shear strength in described step (1) is 14.2MPa, and extruding welding peel strength is 9.1MPa.
Hot melting temperature in described step (2) is 100-150 ℃.
Welding temperature in described step (2) is 450-480 ℃.
In described step (2) overlap joint upper slice and the lap of splice of lower be not less than 200mm.
Beneficial effect of the present invention is:
1, weld of the present invention is smooth, and not easy to leak is difficult for tearing;
2, frequency of maintenance of the present invention reduces, and maintenance cost is low.
Accompanying drawing explanation
Fig. 1 is the welding schematic diagram of refuse landfill HDPE geomembrane of the present invention
The specific embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
1, shearing and the peel strength of setting HDPE geomembrane thermofussion welding fitting, shear strength is 14.2MPa, extruding welding peel strength is 9.1MPa;
2, sweat soldering, as Fig. 1, it is the welding schematic diagram of refuse landfill HDPE geomembrane of the present invention, HDPE geomembrane upper slice 61 and lower 62 overlap, and overlap joint bit length is not less than 200mm, overlap joint upper slice and between lower, blast compressed air, form compressed air channel 17, form weld seam 15 and 16 at described compressed air channel the right and left, two HDPE geomembranes are carried out to hot melt, hot melting temperature is 100-150 ℃.After arriving temperature, dock rapidly, and weld in described commissure, welding temperature is 450-480 ℃;
(3) check and repair, the HDPE geomembrane after sweat soldering is completed checks, checks the damage part of the HDPE geomembrane of laying, and damages part and is greater than the more than 10% of every HDPE geomembrane width, this section is sheared, and again lays.
Claims (5)
1. a welding method for refuse landfill HDPE geomembrane, it is characterized in that realizing by following step:
(1) shearing and the peel strength of setting HDPE geomembrane thermofussion welding fitting;
(2) sweat soldering, overlap joint upper slice and between lower, blast compressed air, form compressed air channel, form weld seam at described compressed air channel the right and left, two HDPE geomembranes are carried out to hot melt, after arrival temperature, dock rapidly, and weld in described commissure;
(3) check and repair, the HDPE geomembrane after sweat soldering is completed checks, checks the damage part of the HDPE geomembrane of laying, and damages part and is greater than the more than 10% of every HDPE geomembrane width, this section is sheared, and again lays.
2. the welding method of refuse landfill HDPE geomembrane as claimed in claim 1, is characterized in that the shear strength in described step (1) is 14.2MPa, and extruding welding peel strength is 9.1MPa.
3. the welding method of refuse landfill HDPE geomembrane as claimed in claim 1, is characterized in that the hot melting temperature in described step (2) is 100-150 ℃.
4. the welding method of refuse landfill HDPE geomembrane as claimed in claim 1, is characterized in that the welding temperature in described step (2) is 450-480 ℃.
5. the welding method of refuse landfill HDPE geomembrane as claimed in claim 1, it is characterized in that overlap joint in described step (2) upper slice and the lap of splice of lower be not less than 200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110456821.2A CN103831973A (en) | 2011-12-27 | 2011-12-27 | Garbage landfill site HDPE geomembrane welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110456821.2A CN103831973A (en) | 2011-12-27 | 2011-12-27 | Garbage landfill site HDPE geomembrane welding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103831973A true CN103831973A (en) | 2014-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110456821.2A Pending CN103831973A (en) | 2011-12-27 | 2011-12-27 | Garbage landfill site HDPE geomembrane welding method |
Country Status (1)
| Country | Link |
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| CN (1) | CN103831973A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020093551A1 (en) * | 2018-11-06 | 2020-05-14 | 北京高能时代环境技术股份有限公司 | Geomembrane construction method |
| CN111516268A (en) * | 2020-04-13 | 2020-08-11 | 中建三局集团有限公司 | Welding and detection process for HDPE (high-density polyethylene) geomembrane of refuse landfill |
| CN113392476A (en) * | 2021-05-21 | 2021-09-14 | 河海大学 | Geomembrane weld joint strength nondestructive judgment and weld joint repair method |
Citations (4)
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| DE3834664A1 (en) * | 1988-10-12 | 1990-04-19 | Niederberg Chemie | Welding and seam testing in an earth trench |
| KR200441911Y1 (en) * | 2007-07-13 | 2008-09-18 | 한본인더스트리 주식회사 | A protective mat for waterproofing layer |
| CN101415537A (en) * | 2006-04-06 | 2009-04-22 | 艾萨帕克控股公司 | Thermoplastic tubular packaging body with an embedded strip |
| CN201713924U (en) * | 2010-07-20 | 2011-01-19 | 中国轻工业武汉设计工程有限责任公司 | Leachate guide exhaust pipe device |
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2011
- 2011-12-27 CN CN201110456821.2A patent/CN103831973A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3834664A1 (en) * | 1988-10-12 | 1990-04-19 | Niederberg Chemie | Welding and seam testing in an earth trench |
| CN101415537A (en) * | 2006-04-06 | 2009-04-22 | 艾萨帕克控股公司 | Thermoplastic tubular packaging body with an embedded strip |
| KR200441911Y1 (en) * | 2007-07-13 | 2008-09-18 | 한본인더스트리 주식회사 | A protective mat for waterproofing layer |
| CN201713924U (en) * | 2010-07-20 | 2011-01-19 | 中国轻工业武汉设计工程有限责任公司 | Leachate guide exhaust pipe device |
Non-Patent Citations (2)
| Title |
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| 张辛雅: "垃圾填埋场防渗膜施工工艺", 《广东建材》 * |
| 荣保铭等: "浅议HDPE防渗膜在垃圾填埋场中的施工工艺", 《建筑与工程》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020093551A1 (en) * | 2018-11-06 | 2020-05-14 | 北京高能时代环境技术股份有限公司 | Geomembrane construction method |
| CN111516268A (en) * | 2020-04-13 | 2020-08-11 | 中建三局集团有限公司 | Welding and detection process for HDPE (high-density polyethylene) geomembrane of refuse landfill |
| CN113392476A (en) * | 2021-05-21 | 2021-09-14 | 河海大学 | Geomembrane weld joint strength nondestructive judgment and weld joint repair method |
| CN113392476B (en) * | 2021-05-21 | 2022-08-19 | 河海大学 | Geomembrane weld joint strength nondestructive judgment and weld joint repair method |
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Application publication date: 20140604 |