CN103774738A - Laying method for refuse landfill high-density polyethylene (HDPE) perforated pipes - Google Patents
Laying method for refuse landfill high-density polyethylene (HDPE) perforated pipes Download PDFInfo
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- CN103774738A CN103774738A CN201110456809.1A CN201110456809A CN103774738A CN 103774738 A CN103774738 A CN 103774738A CN 201110456809 A CN201110456809 A CN 201110456809A CN 103774738 A CN103774738 A CN 103774738A
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- floral tube
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Abstract
The invention discloses a laying method for refuse landfill HDPE perforated pipes. The method is implemented through the steps of (1) pipe fixing, wherein the HDPE perforated pipes are fixed according to pipe arrangement positions; (2) milling, wherein butt joint connection surfaces of two pipes are milled respectively, so that the butt joint connection surfaces are perpendicular to the axes, and the two pipes are on the same axis; (3) hot melting butt joint, wherein the temperature and the pressure intensity are set to perform hot melting butt joint on the butt joint connection surfaces of the two pipes, and extrusion welding is performed on HDPE perforated pipe and anti-seepage layers; (4) cooling, wherein the butt joint HDPE perforated pipes are cooled under the unchanged pressure, and pressure is released after cooling. The HDPE perforated pipes are used for draining landfill leachate and underground water in refuse landfills. According to the method, the butt joint positions are flat and the butt joint is firm, and pipe and anti-seepage contact positions are seepage-free and not prone to tearing.
Description
Technical field
The present invention relates to a kind of method of laying HDPE floral tube in refuse landfill, 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.
In the prior art, seepage control system is for laying geomembrane, and guide system is laid polyethylene pipe, and the material of use contacts with rubbish, be easily corroded, and not environmental protection, cause refuse landfill reservoir area seriously polluted, environment around is also seriously affected.
HDPE is high density polyethylene (HDPE), and because its tensile strength is higher, good seepage-proof property in the time building refuse landfill reservoir area, makes HDPE geomembrane conventionally, is laid on substrate upper soll layer.In addition, HDPE is prepared into floral tube, adopt the guide system of same material as refuse landfill, because HDPE floral tube need to be laid and extends to outside reservoir area, and because reservoir area body is depressed in level ground, HDPE floral tube, in the time extending to outside, reservoir area, must be worn out the HDPE geomembrane that is laid on reservoir area substrate soil surface.Existing laying method has HDPE floral tube and HDPE geomembrane connection bit to be equipped with brokenly the shortcomings such as empty, easy seepage conventionally, and HDPE floral tube is very not smooth in docking connection bit yet, causes pipe leakage, and contaminated soil, affects groundwater balance.
Summary of the invention
The invention provides a kind of laying method of refuse landfill HDPE floral tube, the seepage that solves the HDPE floral tube docking out-of-flatness of refuse landfill guide system and produce and HDPE floral tube and HDPE geomembrane are worn out the seepage of junction, extend the application life of refuse landfill guide system, reduce and repair cost.
The present invention realizes by following technical scheme:
A laying method for refuse landfill HDPE floral tube is to realize by following step:
(1) pipeline is fixed, and HDPE floral tube is fixed according to the stringing position designing, and determines the docking position between docking two pipes;
(2) milling, carries out respectively milling by the docking position joint face of two pipes, makes it vertical with axis, makes two pipes on same axis, and it is coincide with the section of the tubing of corresponding connection, and the docking connector of alignment two pipes, makes it on same axis;
(3) heat-melting butt-joint, design temperature and pressure, carry out hot melt by two pipes docking position joint faces, hightails heating tool after reaching hot melting temperature, and the pipe of two after hot melt docking connector section is applied to even hydraulic coupling docking, forms even seam;
In the connection bit of wearing out of tubing and HDPE geomembrane, adopt and take up tubing with the splicing sleeve of HDPE geomembrane, near described adapter sleeve tube wall, push butt welding;
(4) cooling, the HDPE floral tube after having docked, keeping cooling under pressure permanence condition, is cooled to 40 ℃ of end, and cooling procedure does not move described docking connector and do not apply external force, carries out release after cooling end.
The section misalignment that carries out the tubing of milling in described step (2) is not more than 10% of wall thickness.
In described step (3), the selection of pipe diameter of heat-melting butt-joint is the HDPE floral tube of 200mm or 300mm.
Described diameter is that the pressure of the HDPE floral tube heat-melting butt-joint of 200mm is 7Pa, and the heat absorption time is 182s; Described diameter is that the pressure of the HDPE floral tube heat-melting butt-joint of 300mm is 16Pa, and the heat absorption time is 270s.
In described step (3), splicing sleeve is double-layer tube wall sleeve pipe, five decile support bars are set between described double-layer tube wall, between described five decile support bars, there is HDPE geomembrane, in the time wearing out connection bit described in splicing sleeve is worn out, the HDPE geomembrane having on HDPE geomembrane and splicing sleeve body is overlapping, push respectively butt welding, temperature, pressure at described five decile support bar places
Described diameter is that be 18min the cool time of the HDPE floral tube of 200mm, and described diameter is that be 27min the cool time of the HDPE floral tube of 300mm.
Beneficial effect of the present invention is:
1, the docking position of HDPE floral tube of the present invention is smooth, can not produce Seepage;
2, HDPE geomembrane of the present invention docks smoothly with HDPE floral tube, does not produce and punctures or tear phenomenon;
3, can reach 50 years application life of the present invention, and frequency of maintenance is low, reduces maintenance cost.
Accompanying drawing explanation
Fig. 1 is the sectional drawing of splicing sleeve of the present invention
The specific embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
The laying method of this refuse landfill HDPE floral tube is to realize by following step:
First check that whether substrate soil smooth, solid, need to process in advance properly if any foreign matter, remove surface of base sharp corners, reject the handstone of d >=30mm and tree root, etc. may destroy the foreign matter of upper layer of material.For the larger rock exposed region of corner angle, should first petrographic province roughly be processed smooth and clean up, then use the processing of M5 cement sand plaster, thinnest part thickness is not less than 30mm.
(1) pipeline is fixed, and is fixed according to the stringing position designing laying the on-the-spot HDPE floral tube of stacking, and determines the docking position between docking two pipes.At the scene of laying, the HDPE floral tube of original stacking is no more than 1.5m, guarantees that it is not exposed to the sun, and stable components.
(2) milling, all cleans HDPE floral tube, and the docking position joint face of two pipes is carried out respectively to milling, make it vertical with axis, make two pipes on same axis, and it is coincide with the section of the tubing of corresponding connection, the docking connector of alignment two pipes, makes it on same axis.The section misalignment that carries out the tubing of milling is not more than 10% of wall thickness.Thereby after guaranteeing its follow-up heat-melting butt-joint, docking position is smooth.
(3) heat-melting butt-joint, design temperature and pressure, carry out hot melt by two pipes docking position joint faces, hightails heating tool after reaching hot melting temperature, and the pipe of two after hot melt docking connector section is applied to even hydraulic coupling docking, forms even seam.
The preferred embodiment of the present invention is that HDPE floral tube selection diameter is the tubing of 200mm or 300mm.Diameter is that the pressure of the HDPE floral tube heat-melting butt-joint of 200mm is 7Pa, and the heat absorption time is 182s; Described diameter is that the pressure of the HDPE floral tube heat-melting butt-joint of 300mm is 16Pa, and the heat absorption time is 270s.
Except docking of tubing and tubing, in the time that HDPE floral tube extends refuse landfill reservoir area, owing to having laid impervious barrier on top layer around reservoir area and reservoir area, this impervious barrier uses HDPE geomembrane conventionally, in the time that HDPE floral tube extends to outside, need to puncture geomembrane, in order to prevent percolate seepage, need the connection bit of wearing out of HDPE floral tube and HDPE geomembrane to carry out butt welding.The welding manner of selecting is extruding welding, and needs aid.
The invention provides this welding aid, as Fig. 1, is the sectional drawing of splicing sleeve of the present invention, comprises inner layer tube wall structure 1 and outer wall structure 2, adopts five decile support bars 3 to connect between described two-layer structural pipe wall.Between inner layer tube wall structure 1 and outer wall structure 2, adopt HDPE geomembrane 5 to seal.Wherein inner layer tube wall structure is used for taking up HDPE floral tube 4.In the time wearing out connection bit described in splicing sleeve is worn out, the HDPE geomembrane having on HDPE geomembrane and splicing sleeve body is overlapping, pushes respectively butt welding at described five decile support bar places.
(4) cooling, the HDPE floral tube after having docked, keeping cooling under pressure permanence condition, is cooled to 40 ℃ of end, and cooling procedure does not move described docking connector and do not apply external force, carries out release after cooling end.The diameter of selecting in the present invention is that be 18min the cool time of the HDPE floral tube of 200mm, and diameter is that be 27min the cool time of the HDPE floral tube of 300mm.
Complete after laying, checking whether there is breakage, damage location is being repaired, as without damaged, completing laying, carrying out use test.
Claims (6)
1. a laying method for refuse landfill HDPE floral tube, it is characterized in that realizing by following step:
(1) pipeline is fixed, and HDPE floral tube is fixed according to the stringing position designing, and determines the docking position between docking two pipes;
(2) milling, carries out respectively milling by the docking position joint face of two pipes, makes it vertical with axis, makes two pipes on same axis, and it is coincide with the section of the tubing of corresponding connection, and the docking connector of alignment two pipes, makes it on same axis;
(3) heat-melting butt-joint, design temperature and pressure, carry out hot melt by two pipes docking position joint faces, hightails heating tool after reaching hot melting temperature, and the pipe of two after hot melt docking connector section is applied to even hydraulic coupling docking, forms even seam;
In the connection bit of wearing out of tubing and HDPE geomembrane, adopt and take up tubing with the splicing sleeve of HDPE geomembrane, near described adapter sleeve tube wall, push butt welding;
(4) cooling, the HDPE floral tube after having docked, keeping cooling under pressure permanence condition, is cooled to 40 ℃ of end, and cooling procedure does not move described docking connector and do not apply external force, carries out release after cooling end.
2. the laying method of refuse landfill HDPE floral tube as claimed in claim 1, is characterized in that the section misalignment that carries out the tubing of milling in described step (2) is not more than 10% of wall thickness.
3. the laying method of refuse landfill HDPE floral tube as claimed in claim 1, is characterized in that the selection of pipe diameter of heat-melting butt-joint in described step (3) is the HDPE floral tube of 200mm or 300mm.
4. the laying method of refuse landfill HDPE floral tube as claimed in claim 3, is characterized in that described diameter is that the pressure of the HDPE floral tube heat-melting butt-joint of 200mm is 7Pa, and the heat absorption time is 182s; Described diameter is that the pressure of the HDPE floral tube heat-melting butt-joint of 300mm is 16Pa, and the heat absorption time is 270s.
5. the laying method of refuse landfill HDPE floral tube as claimed in claim 1, it is characterized in that in described step (3), splicing sleeve is double-layer tube wall sleeve pipe, five decile support bars are set between described double-layer tube wall, between described five decile support bars, there is HDPE geomembrane, in the time wearing out connection bit described in splicing sleeve is worn out, the HDPE geomembrane having on HDPE geomembrane and splicing sleeve body is overlapping, pushes respectively butt welding at described five decile support bar places.
6. the laying method of refuse landfill HDPE floral tube as claimed in claim 1, is characterized in that described diameter is that cool time of the HDPE floral tube of 200mm is 18min, and described diameter is that be 27min the cool time of the HDPE floral tube of 300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110456809.1A CN103774738B (en) | 2011-12-27 | 2011-12-27 | The laying method of refuse landfill HDPE floral tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110456809.1A CN103774738B (en) | 2011-12-27 | 2011-12-27 | The laying method of refuse landfill HDPE floral tube |
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| Publication Number | Publication Date |
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| CN103774738A true CN103774738A (en) | 2014-05-07 |
| CN103774738B CN103774738B (en) | 2016-03-16 |
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| CN201110456809.1A Expired - Fee Related CN103774738B (en) | 2011-12-27 | 2011-12-27 | The laying method of refuse landfill HDPE floral tube |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105908786A (en) * | 2016-05-17 | 2016-08-31 | 上海胜创环保科技有限责任公司 | Polyethylene pipe and application of polyethylene pipe in impervious structure |
| CN108071161A (en) * | 2017-11-27 | 2018-05-25 | 中冶天工集团有限公司 | A kind of attachment device and its application method for closed narrow space HDPE pipelines |
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| CN101285543A (en) * | 2008-05-23 | 2008-10-15 | 中国水电顾问集团中南勘测设计研究院 | Water stop structure for pipeline penetrating film |
| CN201190276Y (en) * | 2008-05-23 | 2009-02-04 | 中国水电顾问集团中南勘测设计研究院 | Water stop construct of pipeline film penetrating |
| KR20090120796A (en) * | 2008-05-20 | 2009-11-25 | 권도준 | Laying method of water supply and drain on housing complex |
| CN201915485U (en) * | 2010-12-03 | 2011-08-03 | 深圳市胜义环保有限公司 | Structure for polyethylene (PE) pipe to penetrate through anti-seepage film for garbage landfill |
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2011
- 2011-12-27 CN CN201110456809.1A patent/CN103774738B/en not_active Expired - Fee Related
Patent Citations (4)
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| KR20090120796A (en) * | 2008-05-20 | 2009-11-25 | 권도준 | Laying method of water supply and drain on housing complex |
| CN101285543A (en) * | 2008-05-23 | 2008-10-15 | 中国水电顾问集团中南勘测设计研究院 | Water stop structure for pipeline penetrating film |
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| CN201915485U (en) * | 2010-12-03 | 2011-08-03 | 深圳市胜义环保有限公司 | Structure for polyethylene (PE) pipe to penetrate through anti-seepage film for garbage landfill |
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| 刘志勇: "奥林匹克水上公园工程HDPE土工膜防渗技术", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105908786A (en) * | 2016-05-17 | 2016-08-31 | 上海胜创环保科技有限责任公司 | Polyethylene pipe and application of polyethylene pipe in impervious structure |
| CN108071161A (en) * | 2017-11-27 | 2018-05-25 | 中冶天工集团有限公司 | A kind of attachment device and its application method for closed narrow space HDPE pipelines |
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| CN103774738B (en) | 2016-03-16 |
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Owner name: HANGZHOU QIANXI ENVIRONMENTAL PROTECTION TECHNOLOG Free format text: FORMER OWNER: HANGZHOU ZHONGQIN ENVIRONMENTAL PROTECTION ENGINEERING CO., LTD. Effective date: 20140414 |
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Effective date of registration: 20140414 Address after: Hangzhou City, Zhejiang province 310005 Gongshu District 368 South Zhejiang rent building Room 301 Applicant after: HANGZHOU QIANXI ENVIRONMENTAL PROTECTION SCIENCE & TECHNOLOGY CO., LTD. Address before: Hangzhou City, Zhejiang province 310005 Gongshu District beauty mills A block 602, room 604 Applicant before: HANGZHOU ZHONGQIN ENVIRONMENTAL PROTECTION ENGINEERING CO., LTD. |
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Granted publication date: 20160316 Termination date: 20161227 |
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| CF01 | Termination of patent right due to non-payment of annual fee |