CN102677632A - River bottom anti-seepage treatment for geomembrane - Google Patents
River bottom anti-seepage treatment for geomembrane Download PDFInfo
- Publication number
- CN102677632A CN102677632A CN201210125837XA CN201210125837A CN102677632A CN 102677632 A CN102677632 A CN 102677632A CN 201210125837X A CN201210125837X A CN 201210125837XA CN 201210125837 A CN201210125837 A CN 201210125837A CN 102677632 A CN102677632 A CN 102677632A
- Authority
- CN
- China
- Prior art keywords
- cloth
- width
- membrane
- composite geo
- layer
- 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.)
- Pending
Links
Images
Abstract
The invention relates to a river bottom anti-seepage treatment for a geomembrane, which comprises the following steps of: (1) tidying up a base, specifically, cleaning sundries and flatly compacting, wherein the substrate comprises a river bottom and a side slope; (2) paving a geomembrane layer on the base tidied up by the step (1), wherein the geomembrane layer is split by a plurality of composite geomembranes, and the composite geomembranes comprise two clothes and one membrane; and (3) paving a protective layer on the geomembrane layer paved in the step (2), wherein the protective layer comprises a loam layer paved on the geomembrane layer and a pebble layer paved on the loam layer. According to the method in the invention, various performances of the geomembrane such as the mechanical strength, the ageing resistance and the like can be effectively improved, the damage rate in the process of construction and use can be reduced, the effective service life of the geomembrane can be prolonged, and the pavement cost can be further reduced, so that the method is suitable for the large-area pavement.
Description
Technical field
The present invention relates to a kind of anti-seepage processing method that is applied to the river bed, especially adopt geomembrane to carry out the method that antiseepage is handled.
Background technology
At present, the enhancing of Along with people's environmental consciousness, the application of geomembrane in the river bed antiseepage is handled is more and more widely.But present geomembrane anti-seepage processing method also has following shortcoming: 1, geomembrane is damaged easily, and especially the puncture resistance for the various plants root system is lower, leaks easily; 2, lay the cost height; 3, be not suitable for large-area construction.
Summary of the invention
In order to overcome the above-mentioned defective of prior art; The object of the present invention is to provide a kind of river bed anti-seepage processing method of geomembrane; Adopt method of the present invention can effectively improve the multiple performances such as mechanical strength, ageing resistace of geomembrane, can reduce construction and use in breakage rate, the useful life that can prolong geomembrane; Can also reduce the laying cost, go for large-area laying.
The main technical schemes that the present invention adopts is:
A kind of river bed anti-seepage processing method of geomembrane comprises the steps:
(1) arrangement substrate;
(2) in the substrate after step (1) arrangement, laying the geomembrane layer, said geotechnological rete is spliced by some width of cloth composite geo-membranes;
(3) sheath of setting up defences on the geotechnological rete upper berth after step (2) is laid.
Be preferably; Said composite geo-membrane is two cloth, one film that is provided with antiseepage film between lower floor's cloth and the upper strata cloth; The mode of said composite geo-membrane (two cloth, one film) splicing is: sweat soldering between antiseepage film and the antiseepage film, sew up between lower floor's cloth and the lower floor's cloth and between upper strata cloth and the upper strata cloth.
Be preferably; The method of the said composite geo-membrane of continuous laying is: N width of cloth composite geo-membrane is laid finish back (N=1,2,3; 4; 5 ...), its limit that need splice (with the limit of N+1 width of cloth composite geo-membrane splicing) upwards turned over folded certain width (be preferably 60cm ± 5cm) and form flanging; Again N+1 width of cloth composite geo-membrane reverse (lower floor's cloth up) is layed on the N width of cloth composite geo-membrane; It should be ridden over above the said flanging of N width of cloth composite geo-membrane with the edge of N width of cloth composite geo-membrane splicing, dig the edge of the cloth (i.e. lower floor's cloth in this two width of cloth composite geo-membrane) of each antiseepage film top that covers overlapping part, the antiseepage film of two width of cloth composite geo-membranes is exposed and overlap joint each other; Adjust the lap width (lap width is preferably and is not less than 10cm) of the antiseepage film of two width of cloth composite geo-membranes and together with both seal welds knot; Adjust again two width of cloth composite geo-membranes lower floor's cloth lap width and both are sewed up (needle gage during stitching is preferably 6mm ± 1mm), then the upset of N+1 width of cloth composite geo-membrane is forward, is laid in the substrate; Adjust again two width of cloth composite geo-membranes upper strata cloth lap width and both are sewed up (needle gage during stitching is preferably 6mm ± 1mm), lay next width of cloth composite geo-membrane afterwards.
Be preferably, do not interspace between the surface of said geotechnological rete and substrate, said geotechnological rete in the vertical, from lower reaches of a river continuous laying upstream, trip is depressed at the upper reaches, in the horizontal, in the middle of the river bed to the side slope continuous laying, laminated lower floor.
Be preferably, the unified employing clockwise or counterclockwise of each width of cloth composite geo-membrane flattens, and each width of cloth composite geo-membrane of side slope is answered laminated lower floor when laying, and each width of cloth composite geo-membrane of river bed answers the upper reaches to depress trip when laying.
Be preferably, said composite geo-membrane should not draw when laying tension, should reserve the surplus width of cloth of 1.5%-1.6%.
Usually; Said composite geo-membrane should adopt sticking benefit film in time to glue and mend when breakage occurring; Sticking mend film and the intermembranous splicing of composite earthwork (the splicing width of sticking benefit film and composite geo-membrane is preferably 10cm～20cm); According to the position of actual spoilage, said sticking benefit film can glue on antiseepage film, upper strata cloth or the lower floor's cloth of mending in said composite geo-membrane, and said in time sticking the benefit refers to sticking as early as possible benefit the after laying said composite geo-membrane.
Be preferably, splicing position between the said antiseepage film applies or painting of coating layer not.
Said overcoat can comprise the loam layer that is layed on the said geotechnological rete usually and be layed in the boulder bed on the said loam layer; In time lay said loam layer and boulder bed after laying said geotechnological rete; The laying speed of said loam layer and said geotechnological rete is suitable; Main component in the said loam layer is the fine earth material that sieves, and said loam layer is laid artificial compacting in back and/or small machine compacting, and degree of compaction is not less than 0.96.
The river bed anti-seepage processing method of above-mentioned any described geomembrane, said step (1) comprising:
A1, the cleaning foreign material;
A2, smooth compacting,
Said substrate comprises river bed and side slope.
Said foreign material comprise any in following: sharp stone, tile, fragment of brick, glass, branch and tree root.
Be preferably; The rolling compaction machine compacting can be adopted in the river bed; Side slope can adopt the rammer compacting, and when rolling, said rolling compaction machine usually can be with the speed bearing of trend walking at the end along the river that is no more than 2km/h; When said rolling compaction machine adopted the advance and retreat mistake apart from the method vibroroller cmpacting, the adjacent lap width that rolls vestige was greater than 10cm.
Be preferably, said river bed comprises that undisturbed soil and rammer banket, and said rammer bankets and is the 3:7 graded sand and stone, and said undisturbed soil is respectively with the compacting requirement that rammer bankets:
In the scope that 30cm is dark at least, the degree of compaction of the soil matrix of undisturbed soil is not less than 0.85, and the relative density of the sand base of undisturbed soil is not less than 0.65, rams the degree of compaction of banketing and is not less than 0.96.
Be preferably; The segmentation of said river bed, burst roll; Adjacent said segmentation, the rolling operation face of burst have the overlap joint of certain width, and the lap width that is parallel to the rolling compaction machine direction of travel is not less than 0.5m, are not less than 3m perpendicular to the lap width of rolling compaction machine direction of travel.
Be preferably, said geotechnological rete also comprises the top and/or following fabric that is layed in said composite geo-membrane, is provided with or is not provided with clay layer between said fabric and the composite geo-membrane.
The invention has the beneficial effects as follows:
Method of the present invention has been carried out thoroughly cleaning effectively to substrate before laying geotechnological rete; Not only made things convenient for the laying of geotechnological rete, and, what is more important; Can effectively reduce the breakage of geotechnological rete in laying and use; Prolong the application life of geotechnological rete, particularly, in the process that substrate is cleared up, substrate has been flattened compacting; Help more to prevent the substrate sedimentation, reduced in the long-term use of geotechnological rete after laying and caused the possibility of breaking because of hydraulic pressure, substrate sedimentation etc.;
Method of the present invention adopts the geomembrane of two cloth, one film; Not only played effective antiseepage effect; And the two layers of cloth that is positioned at about the impervious barrier can play good shielding protection effect to impervious barrier; And born and outside be applied to the most of external force on the geomembrane, greatly reduced outside damage to impervious barrier.
Method of the present invention has guaranteed geomembrane two cloth interconnective reliabilities of one film each several part and the impervious barrier reliability in the junction sealing through unique joining method and step, has avoided the splicing or the poor sealing that cause because of splicing process.
Method of the present invention can be at the splicing position of impervious barrier applying coating; Through coating not only can be that jointing positions is more firm; More can play simultaneously bonding and sealing function; Anti-sealing causes erosion from butt welding knot between the two-layer impervious barrier of mutual splicing, reduces or avoids impervious barrier to peel off each other at welding part, and under the situation that impervious barrier is peeled off each other, play the effect of sealing antiseepage.
Method of the present invention adopts the upper reaches to depress the connecting method of trip and laminated lower floor; Two parts that river current and gravity will splice are just each other forced together, rather than two parts are separated from each other, help reducing the damage of jointing positions; Guarantee anti-seepage effect, increase the service life.
Method of the present invention makes composite geo-membrane when laying, be reserved with the appropriate surplus width of cloth, has promptly guaranteed the mutual applying of geotechnological rete and substrate, by avoiding geomembrane to bear excessive power under the situation that occurs certain deformation in substrate, helps increasing the service life.
Method of the present invention is provided with the fabric that can improve geotechnological rete mechanical performance in the above and below of antiseepage film; Both improved the tensile property of geotechnological rete; Can play the certain protection effect to geotechnological rete again, prevent that external force from causing the damage of geotechnological rete, and; Can select specific fabric to lay according to actual needs, satisfy the needs under the multiple situation;
Method of the present invention has increased loam layer and cobble overcoat after geotechnological rete is laid, not only can alleviate geotechnological rete and corroded by the external world, like the erosion to geotechnological rete such as various chemical pollutants, ultraviolet ray; Improved the application life of geotechnological rete, and, can also make the geotechnological rete of laying more firm; What is more important, the present invention is filled with the soft and smooth soil layers of quality such as clay layer in the position of pressing close to most geotechnological rete, make it best protection to be provided to geotechnological rete; Can significantly reduce the damage of geotechnological rete, improve barrier performance, increase the service life; Especially the clay layer above the geotechnological rete can adhere to the upper surface of geotechnological rete after immersion; Reduced geotechnological rete and extraneous contacting, and increased the elasticity of geotechnological rete to a certain extent, even make that laying common geomembrane/antiseepage film also can reach good anti-seepage effect; Reduce the laying cost, be applicable to large-area applications.
Description of drawings
Fig. 1 is the section structure sketch map after laying according to one embodiment of the present of invention;
Fig. 2 is the laying sequential schematic (solid arrow is represented water (flow) direction among the figure, and dotted arrow is represented the laying order of geotechnological rete) of river bed geotechnique's rete of one embodiment of the present of invention;
Fig. 3 is the sketch map of the geomembrane connected mode that the present invention relates to.
The specific embodiment
, through the specific embodiment the present invention is described in more detail the present invention in order better to explain below in conjunction with accompanying drawing so that better understand.
Referring to Fig. 1 and Fig. 2, the invention provides a kind of river bed anti-seepage processing method of geomembrane, comprise the steps: (1) arrangement substrate 1; (2) in the substrate after step (1) arrangement, laying the geomembrane layer, said geotechnological rete is spliced by some width of cloth composite geo-membranes 40; (3) sheath of setting up defences on the geotechnological rete upper berth after step (2) is laid.
Usually, said substrate comprises river bed and side slope.
Said step (1) comprising: a1, and the cleaning foreign material are eliminated the local concavo-convex of substrate surface; A2, smooth compacting.
Being preferably said step a1, a2 carries out successively.
Said foreign material comprise various hard thing, the pricking objects that easily geomembrane caused damage, like sharp stone, tile, fragment of brick, glass, branch and tree root etc.
Because the substrate particularly cleaning of substrate surface (promptly be used to lay the surface of geotechnological rete, be called for short basal plane 2) is the key that improves anti-seepage effect for guaranteeing that good anti-seepage effect is most important; Therefore; The substrate particularly various foreign material of basal plane must thoroughly be removed totally, does not even allow basal plane that the foreign material of coup injury geotechnique rete easily such as local concavo-convex phenomenon, especially sharp stone etc. are arranged; In addition; Pass in time easily to grow gradually and have for tree root etc. and pierce through the dangerous foreign material of geomembrane layer and also must remove,, prolong effective antiseepage life-span of geotechnological rete to eliminate long-term hidden danger.
Said basal plane is preferably clay layer.
The smooth compacting of step a2 should be carried out in anhydrous substrate, like substrate water, snow etc. is arranged, and should give removing, does not also allow when rainfall or snowfall, to construct, to guarantee construction effect.
Said river bed comprises that undisturbed soil and rammer banket.
When actual elevation is lower than design, when promptly the ground elevation of job site is lower than design, need rams low-lying place and fill out, so that river bed integral body is smooth, reduce the local pressure of geotechnological rete, be preferably and adopt 3:7 graded sand and stone rammer to fill out.
The compacting requirement of step a2 is: when the river bed was said undisturbed soil, in the scope that 30cm is dark at least, the degree of compaction of soil matrix was not less than 0.85, and the relative density of sand base is not less than 0.65; When the river bed is a said rammer when banketing, in the dark scope of 30cm at least, degree of compaction is not less than 0.96.
Said step a2 can adopt rolling compaction machine and/or rammer to carry out.
Usually, be main with rolling compaction machine, for cal rolling less than the position adopt the rammer compacting.
Be preferably, the rolling compaction machine compacting is adopted in the river bed, and side slope adopts the rammer compacting.
Said rolling compaction machine is carried out the bearing of trend at end walking along the river when rolling.
When said rolling compaction machine adopts vibroroller cmpacting, can adopt the advance and retreat mistake to roll apart from method.
The wrong stone roller mark pressure width that rolls apart from method of said advance and retreat is preferably more than 10cm.
In order to obtain better rolling effect, should control rolling speed usually, be preferably, the road speed of said rolling compaction machine is no more than 2km/h, to obtain best rolling effect.
In order to improve efficiency of construction, rolling of said river bed can segmentation, burst carries out.
Be preferably the overlap joint that rolls certain width of the adjacent scope of operation, usually, the lap width that is parallel to the rolling compaction machine direction of travel is not less than 0.5m, is not less than 3m perpendicular to the lap width of rolling compaction machine direction of travel.
Segmentation seaming position between the levels on the side slope certain distance that should stagger is preferably and is not less than 1m.
In order to guarantee good rolling effect, to avoid occurring leaking pressure, under-voltage and overvoltage phenomenon, each section should be set up sign.
The river bed anti-seepage processing method of above-mentioned any described geomembrane; Be preferably; Said composite geo-membrane is two cloth, one film that is provided with antiseepage film 4 between lower floor's cloth 3 and the upper strata cloth 5; The mode of said two cloth, one film splicing is: sweat soldering between antiseepage film and the antiseepage film, sew up between lower floor's cloth and the lower floor's cloth and between upper strata cloth and the upper strata cloth.
Said antiseepage film is preferably plastic foil.
Said upper strata cloth and/or lower floor's cloth are preferably nonwoven.Because nonwoven is a kind of polymeric staple fiber dimension chemical material; Normally through acupuncture or heat is sticking is shaped, have advantages of higher tensile strength and extensibility, it is with after antiseepage film combines; The tensile strength and the anti-puncture ability of antiseepage film have not only been increased; And, also increased the friction factor of contact surface because nonwoven surface is coarse, help relatively stable between antiseepage film and upper strata cloth and/or the lower floor's cloth.
Said sweat soldering refers to adopts the welding of thermofussion welding method.Usually can adopt bonding machine to carry out, common Type of Welding is two welding beads.
The lap width of thermofussion welding place is not less than 10cm usually.Be preferably and be not less than 12.5cm, to obtain best cost performance.
Be preferably, the method for the said composite geo-membrane of continuous laying is: N width of cloth composite geo-membrane 40 is laid finish back (N=1,2; 3,4,5;); Folded certain width is upwards turned on the limit that antiseepage film wherein need be spliced, and (being preferably and turning over folded width is 60cm ± 5cm) form flanging, N+1 width of cloth composite geo-membrane oppositely is layed on the N width of cloth composite geo-membrane again, adjusts the lap width and the welding (lap width is preferably and is not less than 10cm) of the antiseepage film of two width of cloth composite geo-membranes; Adjust again two width of cloth composite geo-membranes lower floor's cloth lap width and sew up that (needle gage during stitching is preferably 6mm ± 1mm); Then the upset of N+1 width of cloth composite geo-membrane is forward, adjusts the lap width and the stitching of the upper strata cloth of two width of cloth composite geo-membranes again, lay next width of cloth width of cloth composite geo-membrane afterwards.
Usually need prune ragged margin composite geo-membrane, have the pleat place to flatten, to improve welding quality.
Be preferably, do not interspace between the surface of said geotechnological rete and substrate.
Said geotechnological rete is continuous laying upstream from the downstream of river bed.
The bottom-up laying of geotechnological rete on the side slope.
The unified employing clockwise or counterclockwise of each width of cloth composite geo-membrane flattens, and avoids occurring fold.
Each width of cloth composite geo-membrane is when laying, and firm for after laying improves barrier performance; Be preferably; Each width of cloth composite geo-membrane of side slope is answered laminated lower floor, and each width of cloth composite geo-membrane of river bed answers the upper reaches to depress trip, promptly lays layer by layer against water (flow) direction; The lap-joint 42 of upper reaches composite geo-membrane and downstream composite geo-membrane can weld or not weld, and lap width is preferably and is not less than 20cm.
Should make every effort to smooth-going when said composite geo-membrane is laid, the degree of tightness appropriateness, especially should not draw tension, should reserve 1.55% the surplus width of cloth.
Seaming position 41 (being the welding position) between adjacent two width of cloth antiseepage film certain distance that should stagger is preferably and is not less than 1m.
Said upper strata cloth, lower floor's cloth and/or fabric can adopt portable sack closer (being closer) to sew up, and preferably adopt the high tenacity polyester fiber silk thread, and the needle gage during stitching is preferably 6mm ± 1mm.
Be preferably; When appearring in said composite geo-membrane, should adopt holes the sticking in time sticking benefit of film of mending; Sticking benefit film and the intermembranous splicing of composite earthwork; Said sticking benefit film is sticking to be mended on antiseepage film, upper strata cloth or the lower floor's cloth in said composite geo-membrane, and sticking size of mending the sticking benefit film that holes uses should surpass the edge 10cm～20cm of corresponding holes, and (promptly sticking lap width of mending film and composite geo-membrane or antiseepage film is that 10cm～20cm), said in time sticking the benefit refers to after laying said composite geo-membrane, glue as early as possible benefit.
The river bed anti-seepage processing method of above-mentioned any described geomembrane; Be preferably; Said geotechnological rete also comprises the top fabric 13 that is layed in said composite geo-membrane 10 and/or following fabric 14, is provided with or is not provided with clay layer between said fabric and the composite geo-membrane.
Said fabric usually should be stressed with the antiseepage film synchronization combining.
Said fabric is preferably nonwoven.
Fabric and clay layer is set very big barrier performance and application life of having improved geotechnological rete, when more not using fabric and clay layer, have all improved several times in its barrier performance and application life.
The river bed anti-seepage processing method of above-mentioned any described geomembrane, said overcoat comprises loam layer 6.
Usually, in order to guarantee construction quality, avoid the accidental injury of antiseepage film, should in time lay said loam layer after laying said geotechnological rete, the laying speed of promptly said loam layer and said geotechnological rete should be suitable, is preferably the two synchronous laying.
The impurity that should not contain easy damaged antiseepage film such as weeds, wood, stone in the said loam layer.
Be preferably with the main component of fine earth material of sieving as the loam layer.
Be preferably the closer to the earth material of geotechnological rete thin more.
The earth material that is preferably near said geotechnological rete is a clay.
Said loam layer is laid artificial compacting in back and/or small machine compacting, is preferably compaction in layers.
The degree of compaction of said loam layer is not less than 0.96.
Said earth the thickness of the layer is not less than 20cm.
Said overcoat also comprises the boulder bed 7 that is layed on the said loam layer.
Said loam layer and boulder bed on the side slope are laid from bottom to top, should upwards successively be laid by designing requirement, deck requirement by the bottom usually, and guarantee to be methodically arranged, and do not mix mutually, must not topple over along the slope from eminence.
Should not go up heavy-duty machinery and vehicle on the topping construction working face; Suitable lay plank transports the fine earth material that sieves with trolley, shakeouts the artificial compacting in back; Re-lay the cobble topping; In the time of must going up heavy-duty machinery and vehicle like special circumstances, must confirm, to cannot do without the geotechnological rete of damage through testing and verification.
During broken-up laying, seam is methodically arranged, phenomenon such as must not misplace between genetic horizon, lack, mix.
Above-mentioned construction should be at anhydrous, no rain, do not have snow weather descend to carry out, and during construction such as rainfall, snow, should adopt plastic sheeting to hide, and prevents aquation in advance.
The river bed anti-seepage processing method of above-mentioned each described geomembrane; For the barrier performance of the seaming position that improves antiseepage film, stability, resisting breakage performance etc.; Be preferably; The splicing position between the seaming position 41 between adjacent two width of cloth antiseepage film, sticking benefit film and antiseepage film and/or the lap-joint 42 of upper reaches antiseepage film and downstream antiseepage film (are preferably after welding) after splicing; Apply following coating to cover the seam of stitching position, the preparation prescription of said coating, preparation method and construction are filled a prescription, job practices is following:
Preparation prescription (mass parts):
Polymethyl methacrylate 100
Neoprene glue 75
Polyvinyl alcohol 8
Cobalt naphthenate 9
Triterpenoid saponin 3
Blanc fixe 5
French chalk 8
The preparation method:
Under 50 ℃～55 ℃, 1.5MPa～2.8MPa condition, above-mentioned component is added in the agitated reactor successively, stir, add next component again after the component that adds earlier fully mixes, after all components mix, continue to stir and promptly made said coating in 40 hours～45 hours.
Construction prescription (mass parts):
Said coating 100
N, N-dimethylformamide 1000
Oxolane 80
Surfactant 8
Mould inhibitor 1.5
Job practices:
Under the normal temperature said coating is dissolved in an amount of solvent (by N, N-dimethylformamide and oxolane mix) by above-mentioned construction prescription, mixes the back and add proper amount of surfactant and mould inhibitor, normal temperature applies down and gets final product.Coating processes is preferably and sprays earlier about 1.5 μ m, sprays about 15 μ m after the surface drying again, can carry out next process immediately afterwards, also can treat to carry out next process (be preferably before doing solid work and carry out) again after the surface drying.
Method of the present invention is simple, and the anti-seepage effect after laying is good, long service life; Can use under the clear water condition 40 years～50 years non-leakage; Can use under the sewage condition 30 years～40 years non-leakage, and lay with low costly, be applicable to large-scale promotion application.
Claims (10)
1. the river bed anti-seepage processing method of a geomembrane is characterized in that comprising the steps:
(1) arrangement substrate;
(2) in the substrate after step (1) arrangement, laying the geomembrane layer, said geotechnological rete is spliced by some width of cloth composite geo-membranes;
(3) sheath of setting up defences on the geotechnological rete upper berth after step (2) is laid.
2. method according to claim 1; It is characterized in that said composite geo-membrane is two cloth, one film that is provided with antiseepage film between lower floor's cloth and the upper strata cloth; The mode of said composite geo-membrane splicing is: sweat soldering between antiseepage film and the antiseepage film, sew up between lower floor's cloth and the lower floor's cloth and between upper strata cloth and the upper strata cloth.
3. method according to claim 2; The method that it is characterized in that the said composite geo-membrane of continuous laying is: after N width of cloth composite geo-membrane is laid and finished; Folded certain width is upwards turned on its limit that need splice form flanging, again N+1 width of cloth composite geo-membrane oppositely is layed on the N width of cloth composite geo-membrane, it should be ridden over above the said flanging of N width of cloth composite geo-membrane with the edge of N width of cloth composite geo-membrane splicing; Dig the edge of the cloth of each the antiseepage film top that covers overlapping part; The antiseepage film of two width of cloth composite geo-membranes is exposed and overlap joint each other, is adjusted the lap width and together of the antiseepage film of two width of cloth composite geo-membranes both seal welds knots, adjust again two width of cloth composite geo-membranes lower floor's cloth lap width and both are sewed up; Then the upset of N+1 width of cloth composite geo-membrane is forward; Be laid in the substrate, adjust again two width of cloth composite geo-membranes upper strata cloth lap width and both are sewed up, lay next width of cloth composite geo-membrane afterwards.
4. method according to claim 3 is characterized in that not interspacing between the surface of said geotechnological rete and substrate, and said geotechnological rete in the vertical; From lower reaches of a river continuous laying upstream, trip is depressed at the upper reaches, in the horizontal; Middle from the river bed to the side slope continuous laying; Laminated lower floor, said composite geo-membrane should not draw when laying tension, should reserve the surplus width of cloth of 1.5%-1.6%.
5. method according to claim 4; It is characterized in that said composite geo-membrane should adopt sticking benefit film in time to glue and mend when breakage occurring; Sticking benefit film and the intermembranous splicing of composite earthwork, said sticking benefit film is sticking to be mended on antiseepage film, upper strata cloth or the lower floor's cloth in said composite geo-membrane.
6. method according to claim 5 is characterized in that splicing position between the said antiseepage film applies or painting of coating layer not.
7. according to claim 1,2,3,4,5 or 6 described methods, it is characterized in that said step (1) comprising:
A1, the cleaning foreign material;
A2, smooth compacting,
Said substrate comprises river bed and side slope,
Said overcoat comprises the loam layer that is layed on the said geotechnological rete and is layed in the boulder bed on the said loam layer; In time lay said loam layer and boulder bed after laying said geotechnological rete; The laying speed of said loam layer and said geotechnological rete is suitable; Main component in the said loam layer is the fine earth material that sieves, and said loam layer is laid artificial compacting in back and/or small machine compacting, and degree of compaction is not less than 0.96.
8. method according to claim 7; It is characterized in that the compacting of river bed employing rolling compaction machine, side slope adopts the rammer compacting, and said river bed comprises that undisturbed soil and rammer banket; Said rammer bankets and is the 3:7 graded sand and stone, and said undisturbed soil is respectively with the compacting requirement that rammer bankets:
In the scope that 30cm is dark at least, the degree of compaction of the soil matrix of undisturbed soil is not less than 0.85, and the relative density of the sand base of undisturbed soil is not less than 0.65, rams the degree of compaction of banketing and is not less than 0.96.
9. method according to claim 8; It is characterized in that the segmentation of said river bed, burst roll; Adjacent said segmentation, the rolling operation face of burst have the overlap joint of certain width; The lap width that is parallel to the rolling compaction machine direction of travel is not less than 0.5m, is not less than 3m perpendicular to the lap width of rolling compaction machine direction of travel.
10. method according to claim 9 is characterized in that said geotechnological rete also comprises the top and/or following fabric that is layed in said composite geo-membrane, is provided with or is not provided with clay layer between said fabric and the composite geo-membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210125837XA CN102677632A (en) | 2012-04-26 | 2012-04-26 | River bottom anti-seepage treatment for geomembrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210125837XA CN102677632A (en) | 2012-04-26 | 2012-04-26 | River bottom anti-seepage treatment for geomembrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102677632A true CN102677632A (en) | 2012-09-19 |
Family
ID=46810151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210125837XA Pending CN102677632A (en) | 2012-04-26 | 2012-04-26 | River bottom anti-seepage treatment for geomembrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102677632A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759132A (en) * | 2016-12-19 | 2017-05-31 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of instrument of underwater concrete panel lash-up recovering method and cleaning attachment |
| CN108221866A (en) * | 2018-01-23 | 2018-06-29 | 中国水利水电科学研究院 | Severe cold area slab joint surface layer, which is put down, covers type flexibility water sealing structure and installation method |
| CN108343142A (en) * | 2018-04-17 | 2018-07-31 | 中冶（贵州）建设投资发展有限公司 | A kind of flexible ecological roadbed side slope gutter and its construction method |
| CN111691392A (en) * | 2020-06-28 | 2020-09-22 | 中建八局第四建设有限公司 | Backfill construction method for sludge texture foundation |
| CN112081145A (en) * | 2020-08-11 | 2020-12-15 | 安胜宾 | Dump leaching yard construction process based on green mine construction technology |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1176011A1 (en) * | 1984-01-02 | 1985-08-30 | Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт По Осушению Месторождений Полезных Ископаемых,Специальным Горным Работам,Рудничной Геологии И Маркшейдерскому Делу | Counter-seepage screen for slime storage pounds |
| CN101435190B (en) * | 2008-12-12 | 2010-08-11 | 重庆大学 | Geomembrane anti-seepage processing method of substrate containing silt layer |
| CN102011413A (en) * | 2010-11-18 | 2011-04-13 | 华侨大学 | Composite geomembrane |
-
2012
- 2012-04-26 CN CN201210125837XA patent/CN102677632A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1176011A1 (en) * | 1984-01-02 | 1985-08-30 | Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт По Осушению Месторождений Полезных Ископаемых,Специальным Горным Работам,Рудничной Геологии И Маркшейдерскому Делу | Counter-seepage screen for slime storage pounds |
| CN101435190B (en) * | 2008-12-12 | 2010-08-11 | 重庆大学 | Geomembrane anti-seepage processing method of substrate containing silt layer |
| CN102011413A (en) * | 2010-11-18 | 2011-04-13 | 华侨大学 | Composite geomembrane |
Non-Patent Citations (8)
| Title |
|---|
| 《中国水运（下半月）》 20110915 王会波等 复合土工膜在蓄水河道工程中的应用 第143、145页 4-10 第11卷, 第9期 * |
| 《土工合成材料工程应用手册》编委会: "《土工合成材料工程应用手册》", 31 October 2000, 中国建筑工业出版社 * |
| 中国灌区协会: "《渠道防渗技术论文集》", 31 October 2003, 中国水利水电出版社 * |
| 华北水利水电学院北京研究生部: "《水利水电工程土工合成材料应用技术规范》", 30 November 1998, 中国水利水电出版社 * |
| 张艳艳等: "《中国堤防工程施工丛书•14 切槽法》", 30 November 2006, 中国水利水电出版社 * |
| 张艳艳等: "《工程建设中的土工问题研究》", 30 November 2006, article "3.1填埋场的设计", pages: 378 * |
| 王会波等: "复合土工膜在蓄水河道工程中的应用", 《中国水运（下半月）》 * |
| 顾淦臣等: "《土石坝工程经验与创新》", 31 December 2004, 中国电力出版社 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106759132A (en) * | 2016-12-19 | 2017-05-31 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of instrument of underwater concrete panel lash-up recovering method and cleaning attachment |
| CN106759132B (en) * | 2016-12-19 | 2019-07-05 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of underwater concrete panel lash-up recovering method and the tool for clearing up attachment |
| CN108221866A (en) * | 2018-01-23 | 2018-06-29 | 中国水利水电科学研究院 | Severe cold area slab joint surface layer, which is put down, covers type flexibility water sealing structure and installation method |
| CN108221866B (en) * | 2018-01-23 | 2023-11-17 | 中国水利水电科学研究院 | Panel joint surface layer flat-covering type flexible water stop structure in severe cold region and mounting method |
| CN108343142A (en) * | 2018-04-17 | 2018-07-31 | 中冶（贵州）建设投资发展有限公司 | A kind of flexible ecological roadbed side slope gutter and its construction method |
| CN111691392A (en) * | 2020-06-28 | 2020-09-22 | 中建八局第四建设有限公司 | Backfill construction method for sludge texture foundation |
| CN111691392B (en) * | 2020-06-28 | 2021-07-23 | 中建八局第四建设有限公司 | Backfill construction method for sludge texture foundation |
| CN112081145A (en) * | 2020-08-11 | 2020-12-15 | 安胜宾 | Dump leaching yard construction process based on green mine construction technology |
| CN112081145B (en) * | 2020-08-11 | 2022-01-11 | 阿拉善左旗珠拉黄金开发有限责任公司 | Dump leaching yard construction process based on green mine construction technology |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102677632A (en) | River bottom anti-seepage treatment for geomembrane | |
| CN102041800B (en) | Method for constructing PVC (polyvinyl chloride) composite geomembrane watertight core of earth-rockfill dam | |
| CN101581085A (en) | Reservoir seepage-proofing geomembrane tiered structure and construction method thereof | |
| CN106564915B (en) | A kind of plastic film mulch antiseepage salt pan and its construction method | |
| CN105568834A (en) | Bituminous pavement pit slot repairing paste and method for repairing bituminous pavement | |
| CN109024701B (en) | Phosphogypsum reservoir slope seepage prevention method | |
| CN101979781B (en) | Method for constructing oil drilling waste mud solidification pool | |
| Koerner et al. | Polymeric geomembrane components in landfill liners | |
| CN109137997A (en) | Impervious lining system and construction method on bottom side slope of refuse landfill | |
| CN207348074U (en) | A kind of leakage preventing structure suitable for side slope surface | |
| CN205853481U (en) | A kind of root resistant waterproof roll | |
| CN202247789U (en) | Seepage-proofing structure for river bottom | |
| CN107419628A (en) | A kind of construction method of the rapid build road on reclaimed ground | |
| CN112681396A (en) | Anti-seepage method for artificial water system in cold region city | |
| CN104499508B (en) | A kind of special side slope geomembrane fixed structure of landfill yard and fixing means thereof | |
| CN105672469B (en) | The irregular sludge lagoon covered structure of large area and construction method | |
| CN109706811A (en) | A kind of HDPE film is used for the construction method of road foundation antiseepage | |
| CN202577233U (en) | River bottom impervious structure of geomembranes | |
| US3608444A (en) | Pavement laying or patching with aggregate,fabric,and adhesive | |
| US20100263748A1 (en) | Fluid Liner Fabrication and Installation | |
| CN206128142U (en) | Be applied to landfill yard seepage prevention structure of mountain valley type landfill yard sludge sump solidification back ground | |
| CN213329125U (en) | Sealed anti-seepage structure of landfill of polluted pit and pond | |
| CN205674640U (en) | A kind of macromolecule wet-laying self-adhesive asphalt waterproof coiled material | |
| CN209397630U (en) | A kind of enhanced composite soil work film | |
| CN208844581U (en) | A kind of novel ardealite library slope seepage control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120919 |