CN207156560U - A kind of more membranous type composite geo-membranes of the more cloth of high permeability resistance - Google Patents
A kind of more membranous type composite geo-membranes of the more cloth of high permeability resistance Download PDFInfo
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- CN207156560U CN207156560U CN201720813498.2U CN201720813498U CN207156560U CN 207156560 U CN207156560 U CN 207156560U CN 201720813498 U CN201720813498 U CN 201720813498U CN 207156560 U CN207156560 U CN 207156560U
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- permeability resistance
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Abstract
The utility model provides a kind of high more membranous type composite geo-membranes of the more cloth of permeability resistance, it is combined in high water head, hyperbar iso-stress concentrated area using multilayer material, damaged to reduce or eliminate external water pressure, air pressure etc. to caused by internal structure, so as to reach the purpose of construction safety and quality control, construction safety can be substantially improved, including personnel and equipment safety, and the operating efficiencies such as waterproof can be effectively improved；It is 3 m that can obtain wide cut by a kind of high more membranous type composite geo-membranes of the more cloth of permeability resistance provided by the utility model, and length is 6 m, and thickness is 5.5 mm, and weight is 1200 g/m2, horizontal to be all higher than 600 kN/m to the tensile strength with longitudinal direction, right angle tearing toughness is more than 400 MPa, temperature in use is 80 DEG C+70 DEG C, and the physical and mechanical property indexs such as bursting are high, acid and alkali-resistance, anticorrosive, ageing-resistant, and barrier performance is good.
Description
Technical field
The utility model belongs to Hydraulic and Hydro-Power Engineering field, compound more particularly, to a kind of more membranous types of high more cloth of permeability resistance
Geomembrane.
Background technology
Geomembrane is using plastic sheeting as antiseepage base material, with the non-woven fabric compounded seepage by geo-textile material formed, its antiseepage
Performance depends primarily on the barrier performance of plastic sheeting.At present, the plastic sheeting of domestic and international correlation engineering antiseepage application, mainly has
PE（Polyethylene）、EVA（Ethylene/vinyl acetate copolymer）, also have design to use ECB in tunnel applications（Ethylene vinyl acetate changes
Property pitch blending geomembrane）、HDPE（High-density polyethylene geomembrane）、LDPE（Low density polyethylene (LDPE) geomembrane）And LLDPE（Line
Property low density polyethylene (LDPE) geomembrane）, they are a kind of polymer chemistry flexible materials, and proportion is smaller, and extensibility is stronger, adapt to become
Shape ability is high, and the physical and mechanical property indexs such as tension, tear-proof, bursting are high, has intensity high, extension property is preferable, distorted pattern
The features such as amount is big, acid and alkali-resistance, anticorrosive, ageing-resistant, and barrier performance is good.In recent years on water conservancy and hydropower, municipal administration, building, traffic, ground
Extensive utilization has been obtained in the civil engineerings such as the antiseepage in iron, tunnel, engineering construction, isolation, reinforcement, anti-cracking reinforcement.Due to it
From with the addition of antiaging agent in high polymer material and production technology, therefore can be used in unconventiona temperature environment.It is usually used in dike
The Anti-seeping technology on dam, escape canal, and the antifouling process of spoil area.
But high water head, hyperbar are encountered sometimes, especially easily receive Gao Shui in karst region, the medium of two sides contact
Pressure, the effect of common geomembrane is caused to fail.Geomembrane both domestic and external has many kinds, but can withstand uneven stress
Super-pressure head or air pressure it is actually rare.
The content of the invention
The utility model purpose is, in order to solve the problems, such as the engineering leakage under high water head, hyperbar operating mode, there is provided a kind of
Quick, the more membranous type composite geo-membranes of the more cloth of high permeability resistance of high-tensile simple in construction, easy to make.
Therefore, above-mentioned purpose of the present utility model is achieved through the following technical solutions：
A kind of more membranous type composite geo-membranes of the more cloth of high permeability resistance, the high more membranous type composite geo-membranes of the more cloth of permeability resistance
Geomembrane is blended including ethylene vinyl acetate modified pitch, the both sides point above and below ethylene vinyl acetate modified pitch blending geomembrane
Non-woven fabrics Fu Zhe be thermally bonded, the big of geomembrane is blended with ethylene vinyl acetate modified pitch in the size of the heat bonding non-woven fabrics
It is small consistent；Adhere to high-density polyethylene geomembrane in the outside of heat bonding non-woven fabrics, the high-density polyethylene geomembrane
Size is consistent with the size for being thermally bonded non-woven fabrics；The outside attachment spunlace non-woven cloth of high-density polyethylene geomembrane, the water
The size of prick nonwoven cloth is consistent with the size of high-density polyethylene geomembrane.
While using above-mentioned technical proposal, the utility model can also be used or combined using further below
Technical scheme：
The heat bonding non-woven fabrics is to bond reinforcement material by adding threadiness or powdery hot-melt in non-woven fabric net, then
Melt by heating and cool down reinforcing and form.
The content of carbon black of the high-density polyethylene geomembrane is more than 3%, and at 200 DEG C, oxidation induction time is more than 25
Min, water vapor permeation coefficient is between 1.0 × 10-12With 1.0 × 10-16Between gcm, and pass through -75 DEG C of low-temperature impact embrittlement
Performance test.
The spunlace non-woven cloth is mutual by fiber on the fine water flow jet of high pressure to one or more layers web
It is entangled to form.Spunlace non-woven cloth has higher tensile strength, water proofing property and extensibility, while rough surface, increase
The coefficient of friction of contact surface, be advantageous to the stabilization of composite geo-membrane and protective layer.In addition, spunlace non-woven cloth is to bacterium and chemistry
Effect has preferable erosion resisting, has good effect in acid, the erosion of alkali and salt.
The monofilm thickness of ethylene vinyl acetate modified pitch blending geomembrane is 0.5 mm, the heat bonding non-woven fabrics
Single cloth thickness be 1 mm, the monofilm thickness of the high-density polyethylene geomembrane is 0.5 mm, the list of the spunlace non-woven cloth
Cloth thickness is 1 mm.
The utility model provides a kind of high more membranous type composite geo-membranes of the more cloth of permeability resistance, should in high water head, hyperbar etc.
Power concentrated area is combined using multilayer material, and internal structure is made to reduce or eliminate external water pressure, air pressure etc.
Into damage, so as to reach the purpose of construction safety and quality control, construction safety, including personnel and equipment can be substantially improved
Safety, and the operating efficiencies such as waterproof can be effectively improved；It is more by a kind of high permeability resistance provided by the utility model
It is 3 m that the more membranous type composite geo-membranes of cloth, which can obtain wide cut, and length is 6 m, and thickness is 5.5 mm, and weight is 1200 g/m2, water
Put down to the tensile strength with longitudinal direction and be all higher than 600 kN/m, right angle tearing toughness is more than 400 MPa, temperature in use be -80 DEG C+
70 DEG C, the physical and mechanical property indexs such as bursting are high, acid and alkali-resistance, anticorrosive, ageing-resistant, and barrier performance is good.
Brief description of the drawings
Fig. 1 is a kind of top view of the high more membranous type composite geo-membranes of the more cloth of permeability resistance provided by the utility model；
Fig. 2 is the sectional view in A-A ' directions in Fig. 1；
Fig. 3 is the sectional view in B-B ' directions in Fig. 1；
In figure：Geomembrane is blended in 1- ethylene vinyl acetates modified pitch；2- heat seal non-woven fabrics；3- high density polyethylene (HDPE)s geotechnique
Film；4- spunlace non-woven cloths.
Embodiment
The utility model is described in further detail with specific embodiment referring to the drawings.
Referring to figs. 1 to Fig. 3, a kind of high more membranous type composite geo-membranes of the more cloth of permeability resistance, including ethylene vinyl acetate are modified
Geomembrane 1 is blended in pitch, adheres to heat bonding non-woven fabrics respectively in both sides about 1 in ethylene vinyl acetate modified pitch blending geomembrane
2, the size for being thermally bonded non-woven fabrics 2 is consistent with the size of ethylene vinyl acetate modified pitch blending geomembrane 1；In heat bonding nothing
Spin the outside attachment high-density polyethylene geomembrane 3 of cloth 2, size and the heat bonding non-woven fabrics 2 of high-density polyethylene geomembrane 3
Size is consistent；The outside attachment spunlace non-woven cloth 4 of high-density polyethylene geomembrane 3, the size and high density of spunlace non-woven cloth 4
The size of polyethylene film for earthwork 3 is consistent.
It is to bond reinforcement material by adding threadiness or powdery hot-melt in non-woven fabric net to be thermally bonded non-woven fabrics, then is passed through
Heating melts and cools down reinforcing and forms.
The content of carbon black of high-density polyethylene geomembrane is more than 3%, and at 200 DEG C, oxidation induction time is more than 25 min, water
Steam infiltration coefficient is between 1.0 × 10-12With 1.0 × 10-16Between gcm, and tried by -75 DEG C of low-temperature impact embrittlement performances
Test.
Spunlace non-woven cloth is mutually to be tangled by fiber on the fine water flow jet of high pressure to one or more layers web
Form together.Spunlace non-woven cloth has higher tensile strength, water proofing property and extensibility, while rough surface, increases and connects
The coefficient of friction of contacting surface, be advantageous to the stabilization of composite geo-membrane and protective layer.In addition, spunlace non-woven cloth is to bacterium and chemical action
There is preferable erosion resisting, have good effect in acid, the erosion of alkali and salt.
The monofilm thickness of ethylene vinyl acetate modified pitch blending geomembrane is 0.5 mm, and the single cloth for being thermally bonded non-woven fabrics is thick
Spend for 1 mm, the monofilm thickness of high-density polyethylene geomembrane is 0.5 mm, and single cloth thickness of spunlace non-woven cloth is 1 mm.
After arranging each layer according to order as above, by extruding, rolling and thermal bonding technology will be arranged in sequence
Overall structure is made in good layers of material, so as to obtain the more membranous type composite geo-membranes of the more cloth of high permeability resistance.
The high more cloth multimembrane composite geo-membranes of permeability resistance not draw in transportation, drag firmly, avoid sharp object from stabbing.
Use must use flush type during construction（Gas storage spray shield formula）, cladding thickness not be preferably less than 25 cm, as far as possible ensure with high impermeabilisation
Property the contact of more cloth multimembrane composite geo-membranes medium it is solid, when avoiding uneven change, antiseepage or gas storage, in the range of grass
Skin, tree root will be removed, and the small sandy soil of best contact surface laying particle diameter or clay make overcoat.The high more cloth multimembranes of permeability resistance are compound
Geomembrane should not La get Tai it is tight, both ends embedment（Spray shield）Soil body part is corrugated preferably, when particularly being anchored with rigid material,
Certain stroke should be left；It is minimum that weld seam should be made every effort to when laying the more cloth multimembrane composite geo-membranes of high permeability resistance, is ensureing matter
On the premise of amount, practice every conceivable frugality raw material.Also it is easily guaranteed that quality simultaneously；Between the high more cloth multimembrane composite geo-membranes of permeability resistance
The lap width of seam is typically no less than 10cm, and in turning and lopsided location, seam length shortens as far as possible.The high more cloth of permeability resistance
After the completion of the laying of multimembrane composite geo-membrane, should try one's best to reduce and be walked on film surface, move instrument etc., it is all can be more to high permeability resistance
The object that cloth multimembrane composite geo-membrane damages, it should not be placed on film or carry and be walked on film, in order to avoid to high impermeabilisation
The more cloth multimembrane composite geo-membranes of property cause accidental injury.
Above-mentioned embodiment is used for illustrating the utility model, preferred embodiment only of the present utility model, and
It is not that the utility model is limited, it is new to this practicality in spirit of the present utility model and scope of the claims
Any modification, equivalent substitution and improvements that type is made etc., both fall within the scope of protection of the utility model.
Claims (3)
- A kind of 1. more membranous type composite geo-membranes of the more cloth of high permeability resistance, it is characterised in that the more membranous types of the high more cloth of permeability resistance Composite geo-membrane includes ethylene vinyl acetate modified pitch blending geomembrane, and geomembrane is blended in ethylene vinyl acetate modified pitch Heat bonding non-woven fabrics is adhered in upper and lower both sides respectively, and the size of the heat bonding non-woven fabrics is blended with ethylene vinyl acetate modified pitch The size of geomembrane is consistent；Adhere to high-density polyethylene geomembrane, the high-density polyethylene in the outside of heat bonding non-woven fabrics The size of alkene geomembrane is consistent with the size for being thermally bonded non-woven fabrics；The outside attachment spun lacing nonwoven of high-density polyethylene geomembrane Cloth, the size of the spunlace non-woven cloth are consistent with the size of high-density polyethylene geomembrane.
- A kind of 2. high more membranous type composite geo-membranes of the more cloth of permeability resistance according to claim 1, it is characterised in that the water Prick nonwoven cloth is to be tangled to form by one or more layers web crossed by the fine water flow jet of high pressure.
- A kind of 3. high more membranous type composite geo-membranes of the more cloth of permeability resistance according to claim 1, it is characterised in that the second The monofilm thickness of alkene vinyl acetate modified pitch blending geomembrane is 0.5mm, and single cloth thickness of the heat bonding non-woven fabrics is 1mm, the monofilm thickness of the high-density polyethylene geomembrane is 0.5mm, and single cloth thickness of the spunlace non-woven cloth is 1mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720813498.2U CN207156560U (en) | 2017-07-06 | 2017-07-06 | A kind of more membranous type composite geo-membranes of the more cloth of high permeability resistance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720813498.2U CN207156560U (en) | 2017-07-06 | 2017-07-06 | A kind of more membranous type composite geo-membranes of the more cloth of high permeability resistance |
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| CN207156560U true CN207156560U (en) | 2018-03-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107323009A (en) * | 2017-07-06 | 2017-11-07 | 中国电建集团华东勘测设计研究院有限公司 | A kind of many membranous type composite geo-membranes of many cloth of high permeability resistance and preparation method thereof |
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2017
- 2017-07-06 CN CN201720813498.2U patent/CN207156560U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107323009A (en) * | 2017-07-06 | 2017-11-07 | 中国电建集团华东勘测设计研究院有限公司 | A kind of many membranous type composite geo-membranes of many cloth of high permeability resistance and preparation method thereof |
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