CN110205983A - Severe cold area dam thermal-insulating leakage-resistant is anti-icing to pull out protection system and its construction method - Google Patents
Severe cold area dam thermal-insulating leakage-resistant is anti-icing to pull out protection system and its construction method Download PDFInfo
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- CN110205983A CN110205983A CN201910416309.1A CN201910416309A CN110205983A CN 110205983 A CN110205983 A CN 110205983A CN 201910416309 A CN201910416309 A CN 201910416309A CN 110205983 A CN110205983 A CN 110205983A
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- 238000010276 construction Methods 0.000 title claims description 13
- 239000010410 layer Substances 0.000 claims abstract description 86
- 238000009413 insulation Methods 0.000 claims abstract description 59
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 25
- 229920002635 polyurethane Polymers 0.000 claims abstract description 25
- 239000004814 polyurethane Substances 0.000 claims abstract description 25
- 239000011241 protective layer Substances 0.000 claims abstract description 16
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 15
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000004321 preservation Methods 0.000 claims abstract description 7
- 239000012790 adhesive layer Substances 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 5
- 108010053481 Antifreeze Proteins Proteins 0.000 claims abstract 12
- 230000002528 anti-freeze Effects 0.000 claims abstract 12
- 238000010257 thawing Methods 0.000 claims abstract 12
- 239000011248 coating agent Substances 0.000 claims description 26
- 238000000576 coating method Methods 0.000 claims description 26
- 229920002396 Polyurea Polymers 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 10
- 238000004873 anchoring Methods 0.000 claims description 10
- 229910052731 fluorine Inorganic materials 0.000 claims description 10
- 239000011737 fluorine Substances 0.000 claims description 10
- 238000005246 galvanizing Methods 0.000 claims description 10
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 230000001680 brushing effect Effects 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 4
- 238000007667 floating Methods 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 239000004519 grease Substances 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- 239000004570 mortar (masonry) Substances 0.000 claims description 2
- 238000007591 painting process Methods 0.000 claims description 2
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 claims 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical group CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 claims 1
- 230000006378 damage Effects 0.000 abstract description 7
- 238000005336 cracking Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000004812 organic fluorine compounds Chemical class 0.000 description 1
- -1 poly- ammonia Ester Chemical class 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/16—Sealings or joints
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention, which is that a kind of anti-freeze thawing heat preservation of dam body is anti-icing, pulls out protection system, keeps the temperature anti-icing protection facility of pulling out by the anti-freeze thawing being arranged on the dam body upstream face and dam body back side of dam body two sides respectively and forms.Protection facility includes anti-freeze thawing heat insulation layer from the inside to the outside, reinforce strong increasing layer and anti-ice pulls out protective layer.Anti- freeze thawing heat insulation layer is spliced by one piece of block hydrophobic type polyurethane thermal insulation board, is bonded on dam body upstream face and dam body back side by adhesive layer.It reinforces strong increasing layer to be laid with and be covered in anti-freeze thawing heat insulation layer, anti-ice is pulled out protective layer and is coated in the strong increasing layer of reinforcing.This protection system has excellent thermal insulation property, good waterproof performance, avoids due to the temperature difference annual in 1 year, underwater temperature-difference waterborne leads to the consequence of concrete cracking in subsequent use process to dam concrete generation temperature stress.It solves the anti-icing of dam body and pulls out impervious problem, anti-ice, which pulls out protective layer, can substantially reduce the risk that heat insulation layer is pulled out destruction by ice.
Description
Technical field
Protection system is pulled out the present invention relates to a kind of dam thermal-insulating leakage-resistant is anti-icing, and in particular to a kind of severe cold area concrete is big
Dam thermal-insulating leakage-resistant is anti-icing to pull out protection system and its construction method.
Background technique
Temperature year luffing in severe cold area is big, day and night temperature is big and cold wave is frequent, and due to dam concrete surface, there are larger
Internal-external temperature difference easily causes concrete surface crack, and wherein some can develop into deep layer or crosscutting concern, to threaten
The globality and durability of hydro-structure.Preventing concrete from generating one of the key measure in crack at present is exactly to reinforce heat preservation.
Since thermal insulation material is porous structure material, it is long-term it is soaked after hydrophilic saturation, in winter after the water freezing of library ice sheet with
When concrete insulating course bonds together, as reservoir level changes, thick ice sheet can generate drawing to insulating layer, push, hit
Phenomenon is hit, so that insulating layer drawing be caused to destroy.Insulating layer quilt all has occurred in domestic multiple similar engineering dam upstream faces at present
The problem of ice sheet drawing destroys.
For prevention insulating layer can suffer from the problem of ice pulls out destruction, using hydrophobic type insulation material, add reinforce enhancement layer,
It and with armor coated structure is that anti-icing pull out destroys more feasible processing mode.Armor coated structure is to utilize coating structure
Hydrophobicity, reduce ice surface aggregation extent and adhesion strength.The anti-icing coating that pulls out selected will not only adapt to its deformation, but also
The extruding drawing for having enough intensity to resist ice push destroys, therefore selects correct insulating layer and the anti-icing structure pulled out in surface
It is particularly important to reduce a possibility that dam upstream face insulating layer is destroyed by ice sheet drawing for form design.
According to frost demolition mechanism and form, the anti-icing protective coating structural material that pulls out should have following performance: 1) good
Barrier properties and lower water absorption rate, library water can be completely cut off substantially and penetrated into inside insulating layer, and prevent from anti-icing pulling out coating and ice
Bonding between layer；2) coating surface is smooth, has stronger hydrophobicity, can substantially reduce the cohesive force of ice and concrete surface,
Destruction is pulled out to effectively reduce ice；3) there is excellent mechanical property, can prevent coating itself and substrate insulating layer from pushing away in ice
Destruction under power effect.4) have and insulating layer good combination；5) coating material has good weather resistance, adapts to engineering ring
The basic need in border.
But suitable coating material or far from being enough is only used only, dam insulating layer cannot be entirely prevented to be drawn by ice sheet
The phenomenon that pulling out destruction.
Summary of the invention
Protection system and its construction method are pulled out the purpose of the present invention is to provide dam thermal-insulating leakage-resistant is anti-icing, increase heat preservation
Thermal insulation layer and dam body bonding strength simultaneously can substantially reduce the risk that heat insulation layer is pulled out destruction by ice.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of severe cold area dam thermal-insulating leakage-resistant is anti-icing to pull out protection system, is met water respectively by the dam body that dam two sides are arranged in
The anti-icing protection facility of pulling out of thermal-insulating leakage-resistant on face and dam body back side forms, the protection on dam body upstream face and dam body back side
Facility is identical and symmetrical；Protection facility on dam body upstream face and dam body back side includes that heat preservation from the inside to the outside is anti-
It seeps thermal insulation layer, the strong increasing layer of reinforcing and anti-ice and pulls out protective layer；The thermal-insulating leakage-resistant thermal insulation layer is by one piece of block hydrophobic type polyurethane
Insulation board is spliced, and thermal-insulating leakage-resistant thermal insulation layer is bonded on dam body upstream face and dam body back side by adhesive layer；Described
Strong increasing layer is reinforced to be laid with and be covered on thermal-insulating leakage-resistant thermal insulation layer；The anti-ice is pulled out protective layer and is coated in the strong increasing layer of reinforcing.
Gap between the hydrophobic type polyurethane thermal insulation board plate is less than 2mm；The height difference of adjacent panels is less than 0.5mm.
The strong increasing layer of the reinforcing is made of zinc-plated weldering net, and weldering twine diameter is 0.7mm.
Strong increasing layer surface is being reinforced, there are several anchoring pieces to hammer into across the strong increasing layer of reinforcing and thermal-insulating leakage-resistant thermal insulation layer in dam
It inside takes root fixation, makes to reinforce strong increasing layer and thermal-insulating leakage-resistant thermal insulation layer is fastened on the dam body of dam.
The anti-ice is pulled out protective layer and is coated in the strong increasing layer of reinforcing, and anti-ice pulls out protective layer as double-layer structure composition, internal layer
It is two-component polyurea coating, outer layer is the weather-proof polyureas finishing coat of fluorine richness.
The internal layer two-component polyurea applies thickness 3mm, the weather-proof polyureas finishing coat thickness 0.2mm of the outer layer fluorine richness.
The invention has the following advantages that
Dam surface temperature gradient is cut down, has controlled dam surface temperature stress, prevent the generation in dam harmfulness crack.
Hydrophobic type polyurethane thermal insulation board has excellent thermal insulation property, good waterproof performance, and cementability is strong, ontology mechanical property is excellent
Different, application and construction speed is fast, and construction efficiency is high, and construction quality is easy to control, guarantees that the temperature of dam structure concrete is in and continues
Stable environment is avoided due to the temperature difference annual in 1 year, underwater temperature-difference waterborne, mixed to dam body in subsequent use process
Coagulate the consequence that local products give birth to temperature stress and lead to concrete cracking.
Hydrophobic type polyurethane thermal insulation board heat insulation layer is all covered using hot galvanizing weldering net, and by using anchoring piece
Zinc-plated weldering net is taken root with dam body and reinforces anchoring, there is higher bonding strength, increases insulating layer integral strength, there is good resist
Shearing function and collision prevention function provide dual reinforcing for heat insulation layer and guarantee that safety is high, avoids heat insulation layer
Drop risk.
It solves the anti-icing of dam body and pulls out impervious problem.It is anti-icing to pull out protective layer excellent in mechanical performance, polyurea coating and polyurethane
Insulating layer adhesive strength reaches 0.58MPa or more, and ice and the anti-icing bonding force pulled out between coating only have 0.0027MPa, bonding force
It is very small, it is 1/10th or so of ice and insulating layer base adhesive power, it is possible thereby to prove that anti-ice is pulled out coating and can be dropped significantly
Low heat insulation layer is pulled out the risk of destruction by ice.Polyurethane heat-insulation thermal insulation layer surface brushing is anti-icing pull out coating after, in ice push
Under action condition, excessive compressive deformation will not occur, failure by shear will not occur in ice sheet and insulating layer engagement edge.Have
Speed of application is fast, good elastic deformability, excellent wear-resisting property, base's adaptability are good.In polyurea coating external coating
The strong fluorine richness of high durable, hydrophobicity weather-proof finishing coat, the intermolecular cohesiveness of organofluorine compound is low, air and polymer circle
Molecular force between face is small, and surface free energy is low, and skin-friction coefficient is small, imparts excellent water-fast of organo-fluorine polymer
Property, oil resistivity and wearability, can reduce the Freezing adhesive strength of ice, therefore the hydrophobic ice-phobic energy on enhancing structure surface.
Detailed description of the invention
Fig. 1, which is that dam thermal-insulating leakage-resistant of the present invention is anti-icing, pulls out protection facility structural schematic diagram.
In figure: 1, anti-ice pulls out protective layer, and 2, reinforce enhancement layer, 3, thermal-insulating leakage-resistant thermal insulation layer, 4, adhesive layer, 5, dam body meets water
Face, 6, dam body back side, 7, anchoring piece.
Specific embodiment
Referring to Fig. 1, a kind of dam thermal-insulating leakage-resistant of the present invention is anti-icing to pull out protection system, respectively by the dams of dam two sides is arranged in
The anti-icing protection facility of pulling out of thermal-insulating leakage-resistant on body upstream face 5 and dam body back side 6 forms, in dam body upstream face 5 and dam body backwater
Protection facility on face 6 is identical and symmetrical；Protection facility on dam body upstream face 5 and dam body back side 6 include from
Interior to outer thermal-insulating leakage-resistant thermal insulation layer 3, the strong increasing layer 2 of reinforcing and anti-ice pulls out protective layer 1.
The thermal-insulating leakage-resistant thermal insulation layer 3 is spelled by one piece of block hydrophobic type polyurethane thermal insulation board with excellent thermal insulation property
It connects, the thermal coefficient of hydrophobic type polyurethane thermal insulation board is lower than 0.024w/m.k, has excellent thermal insulation property, good anti-
Aqueous energy.Thermal-insulating leakage-resistant thermal insulation layer 3 is bonded on dam body upstream face 5 and dam body back side 6 by adhesive layer 4, and adhesive layer 4 is poly- ammonia
Ester foam adhesive is applied to the back side and the surrounding of hydrophobic type polyurethane thermal insulation board, poly- with dam surface and adjacent hydrophobic type
The horizontal fissure of displacement of urethane insulation board is pasted.The strong increasing layer 2 of the reinforcing is made of zinc-plated weldering net, and weldering twine diameter is 0.7mm, is laid with simultaneously
It is covered on thermal-insulating leakage-resistant thermal insulation layer 3.Strong 2 surface of increasing layer is being reinforced, there are several anchoring pieces 7 to pass through and reinforces strong increasing layer 2 and heat preservation
The thermal insulation layer of impervious 3 hammers into fixation of taking root in dam, makes to reinforce strong increasing layer 2 and thermal-insulating leakage-resistant thermal insulation layer 3 is fastened on the dam of dam
On body.The anti-ice is pulled out protective layer 1 and is coated in the strong increasing layer 2 of reinforcing, and anti-ice pulls out protective layer 1 as double-layer structure composition, internal layer
It is the two-component polyurea coating of 3mm thickness, outer layer is the weather-proof polyureas finishing coat of fluorine richness of 0.2mm thickness.
The anti-icing working procedure for pulling out protection system of severe cold area dam thermal-insulating leakage-resistant of the present invention are as follows:
1, hydrophobic type polyurethane thermal insulation board is pasted in installation
The dust of dam facing, remaining mud of constructing, the necessary thorough cleaning such as mortar and greasy dirt is clean, and substrate surface keeps dry
Only, there must not be bright water, dam body base should be without the floating ash of grease stain；Base's moisture content should not exceed 7%.Paste hydrophobic type polyurethane heat-insulation
When plate is constructed, base and environment temperature are preferably 10~35 DEG C, and must not be lower than 10 DEG C, and relative air humidity is preferably less than 85%, wind
Power is not preferably greater than three-level；It must not construct when rainy day and strong breeze or more.Hydrophobic type polyurethane heat-insulation back and surrounding full coat hair
It is pasted immediately after bubble polyurethane foam adhesive, soft sliding is in place, and part is forbidden firmly to press, and guarantees the poly- ammonia of hydrophobic type
Ester heat preservation back and dam facing bond area reach 100%.When installation, jam-packed is answered in gap of meeting and discussing, and adjacent two boards should be concordant.
Install it is intact after, extra residual foam adhesive should be removed immediately；Gap between plate should be less than 2mm；The height difference of adjacent panels is small
In 0.5mm.Polyurethane thermal insulation board should be pasted by horizontal mode, and perps should the successively fissure of displacement.
2, net is welded in fixed hot galvanizing
After hydrophobic type polyurethane thermal insulation board process is pasted in installation, being laid with string diameter on hydrophobic type polyurethane thermal insulation board is
Net is welded in 0.7mm hot galvanizing, and is uniformly fixed with anchoring piece, and anchoring piece enters dam body anchorage depth 5cm-20cm, carries out from top to bottom
It is laid with.It is straightened to stretch tight along the vertical and horizontal directions and put down, while paying attention to for flexure plane being laid with towards the inside；It takes on four sides of hot galvanizing weldering net
Connecing width is preferably 60mm；When hot galvanizing weldering net laying is set, should not there are fold, alice.
3, two-component polyurea is scratched
Remove the floating ash on surface, it is desirable that dry, is clean, without dirt.It is layered blade coating two-component polyurea again, subsequent blade coating should be
It is carried out after preceding one of coating surface is dry, blade coating no less than 5 times, until thickness, which reaches 3mm-5mm or more and contains, covers hot galvanizing
Weld net.
4, the weather-proof resin finish of brushing fluorine richness
The weather-proof resin finish of brushing fluorine richness after polyureas surface drying, brushing thickness are applied in 0.15mm-0.2mm or so, finishing coat
Brush requires uniform and thin.In painting process, work surface must not be by water, dust and impurity pollution.After the completion of coating construction in 2h not
Preferably contacted with water, it is interior for 24 hours to prevent external impacts.
Claims (10)
1. a kind of severe cold area dam thermal-insulating leakage-resistant is anti-icing to pull out protection system, met respectively by the dam body that dam body two sides are arranged in
The anti-icing protection facility of pulling out of anti-freeze thawing heat preservation on the water surface (5) and dam body back side (6) forms；In dam body upstream face (5) and dam body
Protection facility on back side (6) is identical and symmetrical；It is characterized by: dam body upstream face (5) and dam body back side (6)
On protection facility include anti-freeze thawing heat insulation layer (3) from the inside to the outside, reinforce strong increasing layer (2) and anti-ice pulls out protective layer
(1)。
2. dam thermal-insulating leakage-resistant in severe cold area according to claim 1 is anti-icing to pull out protection system, it is characterised in that: described
Anti- freeze thawing heat insulation layer (3) is spliced by one piece of block hydrophobic type polyurethane thermal insulation board, and anti-freeze thawing heat insulation layer (3) is equal
It is bonded on dam body upstream face (5) and dam body back side (6) by adhesive layer (4)；The strong increasing layer of the reinforcing (2) is laid with and covers
On anti-freeze thawing heat insulation layer (3)；The anti-ice is pulled out protective layer (1) and is coated on the strong increasing layer (2) of reinforcing.
3. dam thermal-insulating leakage-resistant in severe cold area according to claim 1 or 2 is anti-icing to pull out protection system, it is characterised in that: institute
Gap between the hydrophobic type polyurethane thermal insulation board plate stated is less than 2mm；The height difference of adjacent panels is less than 0.5mm.
4. dam thermal-insulating leakage-resistant in severe cold area according to claim 1 or 2 is anti-icing to pull out protection system, it is characterised in that: institute
The strong increasing layer of the reinforcing stated (2) is made of zinc-plated weldering net, and weldering twine diameter is 0.7mm.
5. dam thermal-insulating leakage-resistant in severe cold area according to claim 1 or 2 is anti-icing to pull out protection system, it is characterised in that:
Strong increasing layer (2) surface is reinforced, there are several anchoring pieces (7) to pass through the strong increasing layer (2) of reinforcing and anti-freeze thawing heat insulation layer (3) hammers into
It takes root in dam body fixation, makes to reinforce strong increasing layer (2) and anti-freeze thawing heat insulation layer (3) is fastened on the dam body of dam.
6. dam thermal-insulating leakage-resistant in severe cold area according to claim 1 or 2 is anti-icing to pull out protection system, it is characterised in that: institute
The anti-ice stated is pulled out protective layer (1) and is coated on the strong increasing layer (2) of reinforcing, and anti-ice pulls out protective layer (1) as double-layer structure composition, and internal layer is
Two-component polyurea coating, outer layer are the weather-proof polyureas finishing coats of fluorine richness.
7. dam thermal-insulating leakage-resistant in severe cold area according to claim 6 is anti-icing to pull out protection system, it is characterised in that: described
Internal layer two-component polyurea applies thickness 3mm, the weather-proof polyureas finishing coat thickness 0.2mm of the outer layer fluorine richness.
8. a kind of anti-icing construction method for pulling out protection system of severe cold area dam thermal-insulating leakage-resistant, working procedure are as follows:
1), hydrophobic type polyurethane thermal insulation board is pasted in installation
It is pasted immediately after hydrophobic type polyurethane heat-insulation back and surrounding full coat polyurathamc foam adhesive, it is soft sliding
It is dynamic in place, forbid part firmly to press, guarantees that hydrophobic type polyurethane heat-insulation back and dam facing bond area reach 100%；Peace
When dress, jam-packed is answered in gap of meeting and discussing, and adjacent two boards should be concordant；
2), net is welded in fixed hot galvanizing
After hydrophobic type polyurethane thermal insulation board process is pasted in installation, being laid with string diameter on hydrophobic type polyurethane thermal insulation board is
Net is welded in 0.7mm hot galvanizing, and is uniformly fixed with anchoring piece, is laid with from top to bottom；It is straightened to stretch tight along the vertical and horizontal directions and put down,
Pay attention to for flexure plane being laid with towards the inside simultaneously；When hot galvanizing weldering net laying is set, should not there are fold, alice.
3) two-component polyurea, is scratched
Remove the floating ash on surface, it is desirable that dry, is clean, without dirt.It is layered blade coating two-component polyurea again, subsequent blade coating should be previous
It is carried out after road coating surface is dry, blade coating no less than 5 times, until thickness, which reaches 3-5mm and contains, covers hot galvanizing weldering net.
4), the weather-proof resin finish of brushing fluorine richness
The weather-proof resin finish of brushing fluorine richness after polyureas surface drying, brushing thickness in 0.15-0.2mm, finishing coat brushing require it is thin and
Uniformly；In painting process, work surface must not be by water, dust and impurity pollution；It should not be contacted with water in 2h after the completion of coating construction,
External impacts should be prevented in for 24 hours.
9. construction method according to claim 8, it is characterised in that: in process 1) in, the dust of dam facing is constructed remaining
Mud, mortar and greasy dirt want thorough cleaning clean, and substrate surface keeps clean, must not there is bright water, and dam body base should be floating without grease stain
Ash；Base's moisture content≤7%.When pasting the construction of hydrophobic type polyurethane thermal insulation board, base and environment temperature should be 10~35 DEG C, sky
Gas relative humidity should be less than 85%, and wind-force is below three-level and three-level；It must not construct when the rainy day；Install it is intact after, should be clear immediately
Except extra residual foam adhesive；Gap between plate should be less than 2mm；The height difference of adjacent panels is less than 0.5mm；Polyurethane thermal insulation board
It should be pasted by horizontal mode, perps should the successively fissure of displacement.
10. construction method according to claim 8, it is characterised in that: in process 2) in, anchoring piece enters dam body anchorage depth
5-20cm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910416309.1A CN110205983A (en) | 2019-05-20 | 2019-05-20 | Severe cold area dam thermal-insulating leakage-resistant is anti-icing to pull out protection system and its construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910416309.1A CN110205983A (en) | 2019-05-20 | 2019-05-20 | Severe cold area dam thermal-insulating leakage-resistant is anti-icing to pull out protection system and its construction method |
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| CN110205983A true CN110205983A (en) | 2019-09-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111581858A (en) * | 2020-03-24 | 2020-08-25 | 国网甘肃省电力公司经济技术研究院 | Design method of heat preservation and insulation system for power transmission and transformation foundation |
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| CN102505664A (en) * | 2011-10-29 | 2012-06-20 | 宜昌天宇科技有限公司 | Dam concrete anti-ageing method |
| CN102658685A (en) * | 2012-05-08 | 2012-09-12 | 江苏苏博特新材料股份有限公司 | Polyurethane/polyurea composite protective layer and preparation method thereof, and application of polyurethane/polyurea composite protective layer in concrete shielding |
| CN203238600U (en) * | 2013-03-18 | 2013-10-16 | 中国水电顾问集团华东勘测设计研究院 | Dam anti-freezing and heat-preserving and dam body integrally-reinforced structure |
| RU2569965C1 (en) * | 2014-07-01 | 2015-12-10 | Открытое акционерное общество "Всероссийский научно-исследовательский институт гидротехники имени Б.Е. Веденеева" | Method to develop cutoff curtain |
| CN108130891A (en) * | 2018-01-30 | 2018-06-08 | 李泽月 | High and cold seepage control of dam heat preservation anti-ice integral structure and its construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111581858A (en) * | 2020-03-24 | 2020-08-25 | 国网甘肃省电力公司经济技术研究院 | Design method of heat preservation and insulation system for power transmission and transformation foundation |
| CN111581858B (en) * | 2020-03-24 | 2023-10-03 | 国网甘肃省电力公司经济技术研究院 | Design method of heat preservation and heat insulation system for power transmission and transformation foundation |
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