CN1552534A - Film laying method for vertical anti-penetrating resistant system for garbage burying cite - Google Patents
Film laying method for vertical anti-penetrating resistant system for garbage burying cite Download PDFInfo
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- CN1552534A CN1552534A CNA031405460A CN03140546A CN1552534A CN 1552534 A CN1552534 A CN 1552534A CN A031405460 A CNA031405460 A CN A031405460A CN 03140546 A CN03140546 A CN 03140546A CN 1552534 A CN1552534 A CN 1552534A
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Abstract
A method for spreading film in the vertical impervious system of garbage landfilling field includes such steps as excavating a deep ditch around the garbage landfilling field, vertically inserting plastic film in it, filling wall-protecting sludge, and filling clay in the ditch. Its advantages are high impervious effect, low cost and long service life.
Description
Technical field
The invention belongs in the Environmental Engineering with geotechnological plastic film is the method that barrier bodies is built underground antiseepage structure.
Background technology
At present in the world the mode of garbage disposal is mainly contained three kinds: burn pyrolysis, compost and sanitary landfills, wherein sanitary landfills mode is because of its engineering reliability with cheap disposal cost and safety is generally adopted.In order to protect surrounding environment, to prevent leakage pollution, to bottom, periphery and the top cover layer in sanitary landfills soot various obstruct impervious barriers must be set, promptly build basic obstruct system, vertically intercept system and surperficial obstruct system.Traditional peripheral impervious barrier is that vertical obstruct system is to adopt the concrete anti-seepage technology to build, and by squeezing into modes such as method, excavation method, water jetting, concrete is vertically placed the periphery in soot by set depth, forms the vertical impervious wall that intercepts.There are shortcomings such as anti-seepage effect is relatively poor, the plant occupied ground is big, engineering cost height in said method.
Summary of the invention
The present invention will solve the problem that above-mentioned conventional art exists, and provides that a kind of cost is low, efficient is high, can adapt to the shop film method in the refuse landfill vertical seepage control barrier bodies of various soil layer environment.
Technical scheme of the present invention is as follows:
Continue to use the basic way of conventional art, promptly excavate groove in the soil body of refuse landfill periphery, in the groove of holding successfully impervious material is set, the invention is characterized in: described impervious material is to adopt geotechnological plastic film; The method step of vertical laying plastic film is as follows:
(1) smooth place;
(2) excavation approaching channel;
(3) open the overflow ditch; Splice geotechnological plastic film;
(4) adopt special-purpose machines and tools pick groove to projected depth, or be slightly larger than projected depth; And in groove, in time replenish slurry coat method;
(5) geotechnological plastic film is inserted in vertical shop in the groove that forms;
(6) groove of inserting geotechnological plastic film has been spread in backfill in time; After the backfill antiseepage being done at geotechnological plastic film edge handles;
Utilize the good barrier performance of geotechnological plastic film, endurance quality and good low temperature flexibility, distortion adaptive capacity, the geotechnological plastic film that is embedded in the groove is combined with the soil body constitute compound vertical seepage control obstruct system.
Compare with traditional seepage control technique, the present invention has the following advantages:
1, because the permeability of geotechnological plastic film is extremely low, less than 10
-12, make impervious material with it and constitute barrier bodies, make dangerous refuse especially for discarded rubbish, have fabulous antiseepage choked flow function, inflow-rate of water turbine reduces then makes soil body long-time stability strengthen; And geotechnological plastic film is a flexible material, can be connected to each other, and has avoided the slit that the leakage proof wall linking may occur in the conventional art, protects the respond well of environment;
2, because geotechnological plastic film and soil body molecule have compatibility, and adhesive power is good, itself and the soil body are combined as a whole in groove, make vertical barrier bodies cording that good intensity be arranged;
3, construction costs is low, only is 1/2～1/3 of concrete cut construction cost; Quick construction is 1.5～2 times of concrete cut work efficiency;
When 4, after safe period, recovering soil effectiveness, do not need the obstruct system is taken out, save engineering cost; Compare with conventional art, the present invention also has the property of monitoring and closes recoverability, can also adapt to various soil property environment, economic benefit and obvious social benefit.
Description of drawings
Fig. 1 is a workflow schematic diagram of the present invention
The specific embodiment
The geotechnological plastic film of having developed has film series products and cloth series products.The film series products has PE film, PVC film, CBR film etc., and the ability of film series products opposing particle wedge angle point-load is relatively poor, and face is easy to impairedly in the construction, but it is in light weight, and construction is easy to control; The cloth series products has a cloth one film, two cloth, one film, many cloth multimembrane, cloth series products face in construction is difficult for impaired, and with the friction factor of the soil body be 1 times of film class, but when the higher stratum middle berth of groundwater table is moulded, because of a large amount of suctions cause weight to be multiplied, cause constructional difficulties easily.Adopt any series products to decide on concrete soil property situation.Select the thickness of film can not be too low, otherwise easily poked, generally select its thickness should be greater than 0.3mm, though thickness is thick more, ageing-resistant performance and barrier performance be good more, also increase along with thickness increases its investment.In actual engineering, also need geotechnological plastic film is spliced to satisfy the demand, the method of the geotechnological plastic film of described splicing, can be bonded process, welding, jackknife method, overlay method, also can be that welding, jackknife method and bonded process triplicity are used, and decides on used film product type.Bonded process adopts the polyvinyl chloride bonding adhesive, and neoprene is as bonding adhesive; The equipment of welding adopts heat-sealing machine or hot press; Jackknife method is applicable to two cloth, one film that does not get rid of the limit; Overlay method is applicable to the engineering that the antiseepage requirement is lower.
Geotechnological plastic film is the HDPE film in the present embodiment.
During concrete the construction, can draw ditch in the draining of pick groove tail end excavation along the shop film axis smooth place 3m～5m in both sides, every 50m～80m establishes together.
In vertical channel, the projected depth of described pick groove should be determined according to geologic report, generally should stretch into impervious layer 0.5m～1m; The trough inner water position of institute's open channels must be lower than notch height 0.1m～0.3m, avoid causing because of notch top hydraulic pressure is too small landslide, timely slurries in the supplemental tank carry out the circulation retaining wall of mud to groove, keep cell wall stable, should control according to different geological conditionss.The viscosity of described slurry coat method is regulated and control according to different geological conditionss, and mud balance γ is controlled at 1.45 ± 0.20 at slot-open-section, and mud balance γ below 1 meter should be controlled at below 1.2 at notch.
When groove depth reaches when estimating the degree of depth, can spread the film construction, the described method that geotechnological plastic film is inserted in vertical shop in groove has heavy embrane method of gravity and film bar laying method;
(1) step of the heavy embrane method of gravity is: a. is put the bag that weight (as cobble) is housed at the bottom of plastic film seam, shrinks for the geotechnological plastic film base that prevents to throw in, and lays shrinkproof bar plug in the weight bag; B. with inserted link plastic film one end is vertically put to bottom land; C. along with the increase of slotting length, lean on the heavy film of putting gradually of thing of weight bag; D. smash the bottom of precipitating mud into bottom land every a determining deviation with feeler lever, check and put film quality, so that notch is consistent with the width of bottom land film.
(2) step of film bar laying method is: a. twists in geotechnological plastic film on the film bar; B. sink in the groove to bottom land by the plastic film axle and the fixed axis of following film device the film bar; C. fixed axis is squeezed into 0.5m～1m in the soil; D. rotate by plastic-laying machine traction plastic film axle, make geotechnological plastic film launch continuous formation and spread into groove.When adopting this method, geotechnological plastic film adopts the bonding and two kinds of method combinations of overlap joint of waterproof binding agent, and lap length is 1.5m～2m, and bonding in the overlap joint scope with waterproof binding agent earlier, the waterproof material of backfill is fixed in lap length 2m scope then.In the work progress, should frequent movable film bar, prevent that it from being buried or being stuck in the groove by silt, be also noted that plastic film bury underground should not draw tension, should stay 1.5% the surplus width of cloth, also need prevent that stone, machinery etc. from damaging plastic film.
Backfill in time prevented that cell wall from caving in after plastic film was spread.The step of described timely backfill groove is after insert a. geotechnique plastic film shop, manually to throw in the cohesive soil that can push down plastic film by conduit in groove, as bed hedgehopping 1m～1.5m, in case plastic film floats under mud buoyancy; B. utilize mud sludging and the artificial earth material of throwing in evenly to insert in the groove, carry out closely knit backfill; C. banket fixedly as early as possible for making, and prevent spongy soil, after clay backfilling finished, backfill fine sand material reached the compactness requirement fast by the grit removal method; D. geotechnological plastic film edge is carried out antiseepage and handle, do on the ground promptly that press mold is handled or, prevent that rainwater, sewage from entering along the plastic film edge, washes away antiseepage and intercept system the method for the edge embedded underground 30cm～50cm of geotechnological plastic film.
For guaranteeing workmanship, in construction, should carry out quality inspection:
After described geotechnological plastic film adopts welding or bonded process splicing, must get the long plastic film of 1m as the splicing sample, should carry out tension test, destroy as mother metal, it is qualified then to think, can carry out the plastic film concatenation construction;
Insert in the process of plastic film described grooving and shop, and the degree of depth that must constantly transfer with the measurement by sound grooving degree of depth or plastic film guarantees to reach designing requirement;
Soil property in the described trench backfill should be screened, and can not be mingled with the article on easy damaged film body surface, as rubble etc.
Vertically leave groove for reaching in the soil body, under the condition of engineering demands, the cost of should selecting to slot is low, construction effect height, adapt to various engineering geological conditions, grooving method that barrier performance is good.Grooving methods such as groover construction, grab chute forming construction, grooving construction and kerf construction are arranged at present, adopt special-purpose groover fluting in the present embodiment.
Claims (6)
1, the shop film method in a kind of refuse landfill vertical seepage control obstruct system is included in the soil body of refuse landfill periphery and excavates groove, and in the groove of holding successfully impervious material is set, and it is characterized in that: described impervious material is to adopt geotechnological plastic film; The method step of vertical laying plastic film is as follows:
(1) smooth place;
(2) excavation approaching channel;
(3) open the overflow ditch; Splice geotechnological plastic film;
(4) adopt special-purpose machines and tools pick groove to projected depth, and in groove, in time replenish slurry coat method;
(5) geotechnological plastic film is inserted in vertical shop in the groove that forms;
(6) groove of inserting geotechnological plastic film has been spread in backfill in time; After the backfill antiseepage being done at geotechnological plastic film edge handles;
Thus, the geotechnological plastic film that is embedded in the groove combines the compound vertical seepage control obstruct of formation system with the soil body.
2, the shop film method in the refuse landfill vertical seepage control obstruct system according to claim 1, it is characterized in that: described geotechnological plastic film can be film series products and cloth series products, its thickness should be greater than 0.3mm, the method of the geotechnological plastic film of described splicing, can be bonded process, welding, jackknife method, overlay method, also can be that welding, jackknife method and bonded process triplicity are used, require to decide on used film product type and concrete antiseepage.
3, the shop film method in the refuse landfill vertical seepage control obstruct system according to claim 1 is characterized in that: the projected depth of described pick groove, should determine according to geologic report, and generally should stretch into impervious layer 0.5m～1m; The trough inner water position of institute's open channels must be lower than notch height 0.1m～0.3m; The viscosity of described slurry coat method is regulated and control according to different geological conditionss, and mud balance γ is controlled at 1.45 ± 0.20 at slot-open-section, and mud balance γ below 1 meter should be controlled at below 1.2 at notch.
4, the shop film method in the refuse landfill vertical seepage control obstruct system according to claim 1 is characterized in that: the described method that geotechnological plastic film is inserted in vertical shop in groove has heavy embrane method of gravity and film bar laying method;
(1) step of the heavy embrane method of gravity is: a. is put the bag that weight is housed at the bottom of plastic film seam, lays shrinkproof bar plug in the weight bag; B. with inserted link plastic film one end is vertically put to bottom land; C. along with the increase of slotting length, lean on the heavy film of putting gradually of thing of weight bag; D. smash the bottom of precipitating mud into bottom land every a determining deviation with feeler lever, check and put film quality;
(2) step of film bar laying method is: a. twists in geotechnological plastic film on the film bar; B. sink in the groove to bottom land by the plastic film axle and the fixed axis of following film device the film bar; C. fixed axis is squeezed in the soil; D. rotate by plastic-laying machine traction plastic film axle, make geotechnological plastic film launch continuously the shop and go into groove.
5, the shop film method in the refuse landfill vertical seepage control obstruct system according to claim 1 is characterized in that: the step of described timely backfill groove is after insert a. geotechnique plastic film shop, at first manually to throw in the cohesive soil that can push down plastic film in groove; B. utilize mud sludging and the artificial earth material of throwing in evenly to insert in the groove, carry out closely knit backfill; C. backfill fine sand material reaches the compactness requirement fast by the grit removal method; D. geotechnological plastic film edge is carried out antiseepage and handle, do on the ground promptly that press mold is handled or the edge embedded underground 30cm～50cm of geotechnological plastic film.
6, according to the shop film method in claim 1 or 2,3,4, the 5 described refuse landfill vertical seepage control obstruct systems, it is characterized in that: described geotechnological plastic film should carry out tension test after adopting welding or bonded process splicing; Insert in the process of plastic film described grooving and shop, the degree of depth that must constantly transfer with the measurement by sound grooving degree of depth or plastic film; Soil property in the described trench backfill should be screened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031405460A CN1552534A (en) | 2003-05-28 | 2003-05-28 | Film laying method for vertical anti-penetrating resistant system for garbage burying cite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA031405460A CN1552534A (en) | 2003-05-28 | 2003-05-28 | Film laying method for vertical anti-penetrating resistant system for garbage burying cite |
Publications (1)
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|---|---|
| CN1552534A true CN1552534A (en) | 2004-12-08 |
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|---|---|---|---|
| CNA031405460A Pending CN1552534A (en) | 2003-05-28 | 2003-05-28 | Film laying method for vertical anti-penetrating resistant system for garbage burying cite |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100460612C (en) * | 2007-02-12 | 2009-02-11 | 傅仲萼 | Reticular blind drainage method for groundwater of sanitary landfill for disposing house refuse |
| CN101172285B (en) * | 2006-10-31 | 2010-06-02 | 首都圈埋立地管理公社 | Waste landfill site preventing landfill gas escape by using waterproof mat |
| CN102261082A (en) * | 2011-02-01 | 2011-11-30 | 深圳市胜义环保有限公司 | Method for controlling seepage by laying membrane for slag field in high water level area, membrane laying slag field and use method thereof |
| CN102367673A (en) * | 2011-09-13 | 2012-03-07 | 北京高能时代环境技术股份有限公司 | Vertical flexible barrier system for remediation of ecological environment |
| CN103147451A (en) * | 2013-03-07 | 2013-06-12 | 山东省水利科学研究院 | Method of forming flow control interface of underground flow media |
| 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 |
| CN109837928A (en) * | 2018-09-12 | 2019-06-04 | 中国环境科学研究院 | The application method of seepage proof curtain, guide seepage control system and seepage proof curtain |
| CN111549809A (en) * | 2019-02-11 | 2020-08-18 | 石少敏 | Water stopping method for sinking geotextile and lapping to form water stopping curtain by sleeve method |
| CN113062296A (en) * | 2021-04-02 | 2021-07-02 | 交通运输部天津水运工程科学研究所 | Vacuum preloading boundary sealing method |
| CN114606984A (en) * | 2022-04-08 | 2022-06-10 | 曾佳 | HDPE geomembrane laying method for building construction of refuse landfill area |
-
2003
- 2003-05-28 CN CNA031405460A patent/CN1552534A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101172285B (en) * | 2006-10-31 | 2010-06-02 | 首都圈埋立地管理公社 | Waste landfill site preventing landfill gas escape by using waterproof mat |
| CN100460612C (en) * | 2007-02-12 | 2009-02-11 | 傅仲萼 | Reticular blind drainage method for groundwater of sanitary landfill for disposing house refuse |
| CN102261082A (en) * | 2011-02-01 | 2011-11-30 | 深圳市胜义环保有限公司 | Method for controlling seepage by laying membrane for slag field in high water level area, membrane laying slag field and use method thereof |
| CN102261082B (en) * | 2011-02-01 | 2013-06-05 | 深圳市胜义环保有限公司 | Method for controlling seepage by laying membrane for slag field in high water level area, membrane laying slag field and use method thereof |
| CN102367673A (en) * | 2011-09-13 | 2012-03-07 | 北京高能时代环境技术股份有限公司 | Vertical flexible barrier system for remediation of ecological environment |
| CN103147451A (en) * | 2013-03-07 | 2013-06-12 | 山东省水利科学研究院 | Method of forming flow control interface of underground flow media |
| 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 |
| CN109837928A (en) * | 2018-09-12 | 2019-06-04 | 中国环境科学研究院 | The application method of seepage proof curtain, guide seepage control system and seepage proof curtain |
| CN109837928B (en) * | 2018-09-12 | 2024-07-19 | 中国环境科学研究院 | Impermeable curtain, drainage guide impermeable system and application method of impermeable curtain |
| CN111549809A (en) * | 2019-02-11 | 2020-08-18 | 石少敏 | Water stopping method for sinking geotextile and lapping to form water stopping curtain by sleeve method |
| CN113062296A (en) * | 2021-04-02 | 2021-07-02 | 交通运输部天津水运工程科学研究所 | Vacuum preloading boundary sealing method |
| CN114606984A (en) * | 2022-04-08 | 2022-06-10 | 曾佳 | HDPE geomembrane laying method for building construction of refuse landfill area |
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