CN110280461A - A kind of corrosion-resistant composite membrane of the anti-rock burst device in long-acting corrugated plating tunnel and implementation method - Google Patents
A kind of corrosion-resistant composite membrane of the anti-rock burst device in long-acting corrugated plating tunnel and implementation method Download PDFInfo
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- CN110280461A CN110280461A CN201910501811.2A CN201910501811A CN110280461A CN 110280461 A CN110280461 A CN 110280461A CN 201910501811 A CN201910501811 A CN 201910501811A CN 110280461 A CN110280461 A CN 110280461A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/002—Pretreatement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/12—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain a coating with specific electrical properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
- B05D7/584—No clear coat specified at least some layers being let to dry, at least partially, before applying the next layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
- B05D2202/10—Metallic substrate based on Fe
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Abstract
A kind of corrosion-resistant composite membrane of the anti-rock burst device in long-acting corrugated plating tunnel and implementation method, SD360 nanofiber tunnel base paint special is applied to the road bottom 6-7, 400 μm of dry film overall thickness of SD360 nanofiber tunnel base paint special, the dedicated current potential of SD320 nano tunnel adjusts paint and is applied to surface 1, the dedicated current potential of SD320 nano tunnel adjusts 80 μm of dry film overall thickness of paint, corrosion-resistant 480 μm of composite membrane overall thickness of the long-acting anti-rock burst device in corrugated plating tunnel, with the acidproof of overlength, it is alkaline-resisting, salt tolerant, the corrosive power of water vapour and nuisance, it adapts to tunnel special in tunnel and corrodes adverse circumstances, reach long-acting protective effect in 100 years.The ageing resistance of material is improved, there is unprecedented high-performance anticorrosion ability and functional stabilization.It is nontoxic, harmless, tasteless, environmentally friendly, protect construction personnel's health.
Description
Technical field
The invention belongs to the nano combined technical field of membrane of chemical, and in particular to a kind of long-acting anti-rock burst dress in corrugated plating tunnel
Set corrosion-resistant composite membrane and implementation method.
Background technique
Tunnel Engineering has many advantages, such as to overcome height difference, reduces running distance, improves traffic safety, while can save ground use
Ground plays the role of protecting environment, and Tunnel Engineering plays in China's Transportation Infrastructure Construction more carrys out important role.
With being continuously increased for Tunnel Engineering buried depth, many hard rock tunnels pass through High Ground Stress Areas, and Rockburst Problem can not neglect
Depending on.Rock burst is the dynamic buckling phenomenon occurred in hard rock High Ground Stress Areas, and the elastic strain energy of rock mass self aggregation discharges suddenly,
Lead to tension or cuts and the sharply rupture deposited or Decrepitation Phenomena.Rock burst is that underground engineering field wall rock destabilization the strongest is existing
One of as, along with the unexpected release of energy, there is sudden and strong destructiveness, directly threat construction worker's lives and properties
Safety, influences construction speed, it has also become one of underground engineering field global problem.China at this stage Mining Method on the mountain ridge of growing up
Leading position is still occupied in tunnel construction, there are still design and construction technique theories in terms of reply high-ground stress construction disaster
Deficiency, and rarely have the application of active defense technology, carry out high-ground stress hard rock tunnel Prediction for Rock Burst, construction surrounding rock stability, apply
The problems such as work optimizes is studied, and can be to grow up to build that tunnel is high-quality, safe, fast, efficient provides a strong guarantee.
Major long tunnel buried depth is big, it is long to extend, engineering geology complexity, generally as the main projects of Transport Facility Construction.
Due to environmental constraints and cost is reduced, the only head driving mileage in tunnel is increasing, and single working face and construction order are to restrict to apply
The deciding factor that work technology plays.In the Tunnel Engineering of duration anxiety, how safe and efficient completion construction task, and energy
The life requirement for ensureing tunnel structure, is urgent problem in the underground engineering constructions such as current traffic tunnel.
Rock burst occurs under the conditions of surrouding rock stress state and rock physics mechanical characteristic certain composition, therefore control argument one
As can be divided into and reinforce country rock, reduction country rock, stress transfer etc., corresponding rockburst control measure includes rock burst supporting, region prevention
With local solution danger H major class.Rock burst supporting measure is mainly to reinforce country rock, and rear two classes control measure mainly weaken country rock and answer
Power transfer, fundamental starting point is the probability and grade for actively reducing rock burst generation, but cannot fundamentally be overcome in measure condition
The harm that lower burst rock burst generates construction, thus after cavern excavation, it is necessary to effective rock burst supporting measure is taken in time.
The country's common technology and methods of the anti-rock burst in outer tunnel have following 6 kinds at present:
(1) flexible steel mesh (3) gunite concrete (4) steel arch-shelf of extraordinary anchor pole (2)+reinforcing bar row (5) water spray softening country rock
(6) stress relief hole is performed.
Extraordinary anchor pole, flexible steel mesh, gunite concrete, steel arch-shelf+reinforcing bar, which are arranged, water spray softens country rock, applies stress releases
The anti-rock burst method such as discharge hole more lags for the opposite construction of rock-burst prevention measure, cannot closely be connected with excavating sequences etc., no
Meet the requirement of safe, fast, efficient equal construction.
It, cannot be close with excavating sequences etc. in order to solve more to lag for the opposite construction of above method rock-burst prevention measure
Linking is unsatisfactory for the safe, fast, efficient requirement problem for waiting construction, China Railway First Investigation Designing Institute Group Co., Ltd's bridge
The novel corrugated plate rock burst protective device researched and developed at tunnel after tunnel excavation, can apply assembled corrugated culvert in time, and open
Digging process can closely be connected, without accelerating construction progress, improving safety as carrying out supporting again after rock burst generation after excavating in the past
Property, carry out the prevention and treatment supporting of live quick-assembling.But due to there is a large amount of water bursts in tunnel, water quality is complex in composition, containing a large amount of rotten
Element is lost, and has carbonic acid corrosion, 90% or more relative air humidity in tunnel, the close saturation of water vapour content in air.It is formed
Special tunnel corrodes adverse circumstances in tunnel, and original is zinc-plated using tradition and zinc-rich anti-corrosive paint carries out anti-corrosion treatment, by
It is poor in traditional anticorrosion technique Corrosion Protection, it is especially nearly unavailable under sour corrosion environment, make the anti-rock burst device of corrugated plating
Fast erosion will make the anti-rock burst failure of apparatus of corrugated plating using several years because of corrosion, cause bellows rock burst protective device resistance to
Long property is poor, is unsatisfactory for the requirement that existing tunnel builds 100 years engineerings.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the object of the present invention is to provide a kind of long-acting anti-rock bursts in corrugated plating tunnel
The corrosion-resistant composite membrane of device and implementation method are badly in need of researching and solving the anticorrosion in tunnel under severe corrosive environment in application aspect
Problem makes novel corrugated plate rock burst protective device can satisfy the tunnel requirement used in 100 years.Realize durability, insulating properties, side
Just quick target easy to operate, cost performance is high.Using functions such as superpower acidproof, the alkaline-resisting, salt tolerants of nano anti-corrosive material, novel
The anti-rock burst apparatus surface in long-acting corrugated plating tunnel forms nanofiber high-performance heavy antisepsis composite membrane, make its have overlength it is acidproof,
The corrosive power of alkaline-resisting, salt tolerant, water vapour and nuisance adapts to tunnel special in tunnel and corrodes adverse circumstances, reaches long-acting
Protective effect.The ageing resistance of material is improved, there is unprecedented high-performance anticorrosion ability and functional stabilization.Nontoxic,
It is harmless, tasteless, environmentally friendly, protect construction personnel's health.
To achieve the goals above, the technical solution adopted by the present invention is that:
A kind of anti-corrosion-resistant composite membrane of rock burst device in long-acting corrugated plating tunnel, SD360 nanofiber tunnel base paint special apply
To the road bottom 6-7,400 μm of dry film overall thickness of SD360 nanofiber tunnel base paint special, the dedicated current potential of SD320 nano tunnel
It adjusts paint and is applied to surface 1, the dedicated current potential of SD320 nano tunnel adjusts 80 μm of dry film overall thickness of paint, long-acting corrugated plating tunnel
Corrosion-resistant 480 μm of composite membrane overall thickness of anti-rock burst device.
A kind of implementation method of the anti-corrosion-resistant composite membrane of rock burst device in long-acting corrugated plating tunnel, comprising the following steps:
1) the dedicated current potential of SD360 nanofiber tunnel base paint special, SD320 nano tunnel is selected to adjust paint, curing agent, have
Solvent；
2) substrate surface pre-treatment before film forming is constructed:
A, corrugated steel surface substrate carries out surface sand-blasting process；
B, abrasive blasting derusting reaches Sa3 grades, and privileged sites reach St3 grades using power tool polishing derusting；
C, surface requirements are clean, dry when constructing, all macroscopic greases, oil, dirt, lubricant and other pollutions
Object must be removed all；
D, repeated cleaning must be carried out before per pass paint application to construction surface, keeps ventilation, inner wall keeps dry state；
3) surface cleaning state reaches above-mentioned construction front surface requirement, starts to spray first of SD360 according to design thickness
Nanofiber tunnel base paint special is to bottom, and 65 μm of thickness of dry film, and cannot have the generation of holiday defect, especially for abutment joint area
Domain carries out pre-coating, to reach reliable anti-corrosion effect；
4) after first of SD360 nanofiber tunnel base paint special of step 3) is done something in disregard of obstacles, start to spray according to design thickness
Second SD360 nanofiber tunnel base paint special is applied to prime paint surface, 65 μm of second paint thickness of dry film, in strict accordance with
Spraying process is constructed, and holiday is avoided to generate；
5) after the second SD360 nanofiber tunnel base paint special of step 4) is done something in disregard of obstacles, start to spray according to design thickness
Third road SD360 nanofiber tunnel base paint special is applied to second paint surface, 65 μm of third road paint thickness of dry film, in strict accordance with
Spraying process is constructed, and holiday is avoided to generate；
6) after the third road SD360 nanofiber tunnel base paint special of step 5) is done something in disregard of obstacles, start to spray according to design thickness
The 4th SD360 nanofiber tunnel base paint special is applied to third road paint surface, the 4th 65 μm of paint thickness of dry film, in strict accordance with
Spraying process is constructed, and holiday is avoided to generate；
7) after the 4th SD360 nanofiber tunnel base paint special of step 6) is done something in disregard of obstacles, start to spray according to design thickness
Apply the 5th SD360 nanofiber tunnel base paint special to the 4th paint surface, the 5th 65 μm of paint thickness of dry film, in strict accordance with
Spraying process is constructed, and holiday is avoided to generate；
8) after the 5th SD360 nanofiber tunnel base paint special of step 7) is done something in disregard of obstacles, start to spray according to design thickness
Apply the 6th SD360 nanofiber tunnel base paint special to the 5th paint surface, the 6th 65 μm of paint thickness of dry film, in strict accordance with
Spraying process is constructed, and holiday is avoided to generate；
9) after the 6th SD360 nanofiber tunnel base paint special of step 8) is done something in disregard of obstacles, start to spray according to design thickness
It applies the dedicated current potential of first of SD320 nano tunnel and adjusts paint to the 6th paint surface, the 7th 80 μm of paint thickness of dry film is strictly pressed
It constructs according to spraying process, holiday is avoided to generate；
10) it after the 7th paint surface is done something in disregard of obstacles, carries out routine examination to entire compound layer surface, dry film overall thickness 480 ±
10 μm should handle coating defect problems in time, and entire coat system must satisfy coating process check criteria, and repairing terminates
After day must be dried under natural environmental condition, routinely checked again, it is ensured that can put into production use after qualified.
Further, the corrosion-resistant composite membrane is capable of forming fine and close intercommunication interpenetrating conductive network structure, makes metal
Corrosion potential increases and (increases 223mv), 173.2 μ A/cm of the close decline of corrosion current2, corrosion electric current density substantially reduces, makes to corrode
The condition and difficulty of generation improve, and corrosion is not susceptible to, and have anodic protection effect, after anodic protection, due to forming densification
Intercommunication interpenetrating conductive network structure, electronics is mobile to coating surface, and redox reaction occurs in the outer surface of paint, rather than sends out
It is raw to be spatially separating reaction with metal formation in metal surface, metal is protected not to be corroded, structure design, while meeting wave
The insulation of card surface recombination film, resistance >=1012Ω, and adhesive force >=22MP of corrosion-resistant composite membrane and substrate steela, chloride ion
Permeability (mg/cm2.d)≤3.6×10-5It is the critical support of the anti-rock burst device anticorrosion long life anti corrosion in corrugated plating tunnel；And
And corrosion-resistant composite membrane elongation at break, greater than the maximum displacement value under substrate limiting temperature situation, nanofiber heavy-duty anticorrosive " gold
The elongation at break of category plastics " composite membrane is 62.9%.
The beneficial effects of the present invention are:
Special Corrosion Environmental Studies conclusion in tunnel: Special Corrosion environment is ISO 12944-2 C5-I and chemistry in tunnel
Corrosive environment comprehensive function forms extremely complex harsh corrosive environment special in tunnel, provides foundation for composite membrane design.
Selection, the composite membrane design of nanometer high-property anti-corrosion material.Material to acid, alkali, salt, water vapour and nuisance whether
It is highly stable, it is capable of forming nanofiber high-performance heavy antisepsis composite membrane, the erosion of environment is protected it from, plays long-term anti-corrosion
The key of erosion effect, can be used rock burst protective device in novel corrugated plate tunnel 100 years, plays the role of long term support.Meet tunnel
After road excavates, assembled corrugated culvert can be applied in time, can be closely connected with excavating sequences, do not have to as sending out after excavating in the past to rock burst
Supporting is carried out after life again, accelerates construction progress, improve safety, carries out the prevention and treatment supporting requirement of live quick-assembling.
Heavy antisepsis composite film is capable of forming fine and close intercommunication interpenetrating conductive network structure, makes corrosion of metal potential rise
High (increasing 223mv), 173.2 μ A/cm of the close decline of corrosion current2, corrosion electric current density substantially reduces, the condition that corrosion occurs
It is improved with difficulty, corrosion is not susceptible to.With anodic protection effect, after anodic protection, since the intercommunication for forming fine and close mutually perforates
Electric network structure, electronics is mobile to coating surface, and redox reaction occurs in the outer surface of paint, rather than occurs in metal watch
Face is spatially separating reaction with metal formation, metal is protected not to be corroded.
The design of nanofiber heavy-duty anticorrosive structure of composite membrane, while meeting the insulation of corrugated plating surface recombination film, resistance >=1012
Ω is the key that one of formula.
Realize adhesive force >=22MP of heavy antisepsis " metallo-plastic " composite film and substrate steela, chloride permeability rate (mg/
cm2.d)≤3.6×10-5It is the critical support of the anti-rock burst device anticorrosion long life anti corrosion in corrugated plating tunnel.
Nanofiber heavy-duty anticorrosive composite membrane elongation at break is received greater than the maximum displacement value under substrate limiting temperature situation
The elongation at break of rice fiber heavy antisepsis " metallo-plastic " composite membrane is 62.9%, considerably beyond under substrate limiting temperature situation
Maximal dilation value, the novel anticorrosion system of the design can satisfy linear extendible caused by the anti-rock burst device in corrugated plating tunnel
Variation.
Compound success novel nano fiber heavy antisepsis " metallo-plastic " composite corrugated plate material, there is traditional material can not compare
Quasi- acid-resistant anti-corrosion performance is the great innovation of the anti-rock burst device anti-corrosion composite membrane in corrugated plating tunnel, can effectively solve the problem that ripple
The anti-rock burst device in plate tunnel is existing to corrode problem.After meeting tunnel excavation, assembled corrugated culvert can be applied in time, with excavation work
Sequence can closely be connected, and carry out supporting again after rock burst generation after excavating in the past without picture, accelerate construction progress, improve safety,
Carry out the technical requirements of the prevention and treatment supporting of live quick-assembling.
With anodic protection action principle, have compared with traditional sacrificial anode and protective cathode antiseptic principle apparent excellent
Gesture can bear the corrosion in tunnel under Special Corrosion environment.Nanofiber high-performance heavy antisepsis composite membrane, builds in ripple plate surface
The flexibility being made of nanometer heavy anticorrosive material " plastic-metal " protective layer is made, to effectively prevent acid solution and corrosive medium pair
The corrosion of the anti-rock burst device in corrugated plating tunnel.
Nanofiber high-performance heavy antisepsis composite membrane, in tunnel under Special Corrosion environment, realizes New-type long-acting ripple
The anti-rock burst device anticorrosion time limit in plate tunnel 100 years；Meet the insulation of corrugated plating surface recombination film, resistance >=10 simultaneously12Ω.Guarantee
Construction speed, improves work efficiency, ensure that safety in production.Reached durability, insulating properties, it is convenient and efficient it is easy to operate,
The high target of cost performance.
Two kinds of Material claddings, simple process, specific gravity are only 1.02kg/l, and construction safety is easy, can be shortened a large amount of durations.Together
When have superpower adhesive force and wearability, can bear liquid for a long time wash away, be free of heavy metal, be the safety and environmental protection of food-grade
Material；
Specific embodiment
The present invention is further discussed below with reference to embodiments.
A kind of anti-corrosion-resistant composite membrane of rock burst device in long-acting corrugated plating tunnel, SD360 nanofiber tunnel base paint special apply
To the road bottom 6-7,400 μm of dry film overall thickness of SD360 nanofiber tunnel base paint special, the dedicated current potential of SD320 nano tunnel
It adjusts paint and is applied to surface 1, the dedicated current potential of SD320 nano tunnel adjusts 80 μm of dry film overall thickness of paint, long-acting corrugated plating tunnel
Corrosion-resistant 480 μm of composite membrane overall thickness of anti-rock burst device.
A kind of implementation method of the anti-corrosion-resistant composite membrane of rock burst device in long-acting corrugated plating tunnel, comprising the following steps:
1) the dedicated current potential of SD360 nanofiber tunnel base paint special, SD320 nano tunnel is selected to adjust paint, curing agent, have
Solvent；
2) substrate surface pre-treatment before film forming is constructed:
A, corrugated steel surface substrate carries out surface sand-blasting process；
B, abrasive blasting derusting reaches Sa3 grades, and privileged sites reach St3 grades using power tool polishing derusting；
C, surface requirements are clean, dry when constructing, all macroscopic greases, oil, dirt, lubricant and other pollutions
Object must be removed all；
D, repeated cleaning must be carried out before per pass paint application to construction surface, keeps ventilation, inner wall keeps dry state；
3) surface cleaning state reaches above-mentioned construction front surface requirement, starts to spray first of SD360 according to design thickness
Nanofiber tunnel base paint special is to bottom, and 65 μm of thickness of dry film, and cannot have the generation of holiday defect, especially for abutment joint area
Domain carries out pre-coating, to reach reliable anti-corrosion effect；
4) after first of SD360 nanofiber tunnel base paint special of step 3) is done something in disregard of obstacles, start to spray according to design thickness
Second SD360 nanofiber tunnel base paint special is applied to prime paint surface, 65 μm of second paint thickness of dry film, in strict accordance with
Spraying process is constructed, and holiday is avoided to generate；
5) after the second SD360 nanofiber tunnel base paint special of step 4) is done something in disregard of obstacles, start to spray according to design thickness
Third road SD360 nanofiber tunnel base paint special is applied to second paint surface, 65 μm of third road paint thickness of dry film, in strict accordance with
Spraying process is constructed, and holiday is avoided to generate；
6) after the third road SD360 nanofiber tunnel base paint special of step 5) is done something in disregard of obstacles, start to spray according to design thickness
The 4th SD360 nanofiber tunnel base paint special is applied to third road paint surface, the 4th 65 μm of paint thickness of dry film, in strict accordance with
Spraying process is constructed, and holiday is avoided to generate；
7) after the 4th SD360 nanofiber tunnel base paint special of step 6) is done something in disregard of obstacles, start to spray according to design thickness
Apply the 5th SD360 nanofiber tunnel base paint special to the 4th paint surface, the 5th 65 μm of paint thickness of dry film, in strict accordance with
Spraying process is constructed, and holiday is avoided to generate；
8) after the 5th SD360 nanofiber tunnel base paint special of step 7) is done something in disregard of obstacles, start to spray according to design thickness
Apply the 6th SD360 nanofiber tunnel base paint special to the 5th paint surface, the 6th 65 μm of paint thickness of dry film, in strict accordance with
Spraying process is constructed, and holiday is avoided to generate；
9) after the 6th SD360 nanofiber tunnel base paint special of step 8) is done something in disregard of obstacles, start to spray according to design thickness
It applies the dedicated current potential of first of SD320 nano tunnel and adjusts paint to the 6th paint surface, the 7th 80 μm of paint thickness of dry film is strictly pressed
It constructs according to spraying process, holiday is avoided to generate；
10) it after the 7th paint surface is done something in disregard of obstacles, carries out routine examination to entire compound layer surface, dry film overall thickness 480 ±
10 μm should handle coating defect problems in time, and entire coat system must satisfy coating process check criteria, and repairing terminates
After day must be dried under natural environmental condition, routinely checked again, it is ensured that can put into production use after qualified.
Embodiment
Tunnel internal corrosion environment and corrodible property research, are that the anti-rock burst device anticorrosion in New-type long-acting corrugated plating tunnel is compound
Film design provides design considerations.The anti-rock burst device anticorrosion composite membrane conceptual design in New-type long-acting corrugated plating tunnel, is matched at selection
Side, performance, method of processing and treatment, using functions such as superpower acidproof, the alkaline-resisting, salt tolerants of nano anti-corrosive material, in New-type long-acting
The anti-rock burst device anticorrosion composite film surface in corrugated plating tunnel forms nanofiber high-performance heavy antisepsis " metallo-plastic " composite membrane
Protective layer makes the corrosive power with the acidproof, alkaline-resisting of overlength, salt tolerant, water vapour and nuisance, adapts to tunnel special in tunnel
Road corrodes adverse circumstances, reaches long-acting protective effect in 100 years.The ageing resistance for improving coating, reaches environmentally protective.New-type long-acting
The anti-rock burst device anticorrosion composite film conceptual design in corrugated plating tunnel, composite film thickness and structure and acidproof, alkaline-resisting, salt tolerant
The relationship of mist, water vapour and nuisance ability；The anti-rock burst device anticorrosion composite membrane in New-type long-acting corrugated plating tunnel and corrugated plating
The adhesive force on surface, binding strength, composite membrane insulating properties, resistance >=1012 Ω research.The anti-rock burst in New-type long-acting corrugated plating tunnel
Device anticorrosion composite membrane complex technique and technical study.The anti-rock burst device substrate surface treatment work in New-type long-acting corrugated plating tunnel
The relationship research of skill and antiseptic property；
Nano material refers to material of the characteristic size in 1-100nm range of material component.When the size of a particle is small
When to nanometer scale, its microstructure and properties be both different from the microsystem of atom, molecule, also different from display eigen
The bulky grain material meta system of property, but a transition system therebetween.Nanoparticle size is small, specific surface
Product is big, has very high surface energy, to have a significant impact to its chemical property.It is demonstrated experimentally that particle dispersion degree is increased to one
After determining degree, with the reduction of particle diameter, it increased dramatically positioned at the atomicity of particle surface and the ratio of total atom number, work as grain
When diameter is reduced to 5nm, surface atom proportion is up to 50%.Since surface atom number increases, atomicity is reduced in particle, is enabled
Electron energy level in band divides, the level spacing (1 × 12 after division-2-1×10-5eV).Nano material is due to its own
Feature in structure and there is small-size effect, surface-interface effect, quantum size effect and macro quanta tunnel effect, because
And compared with the conventional material with component, catalysis, optics, magnetism, in terms of have many unusual performances, preventing again
Rotten aspect shows good development prospect.
The invention uses the nanofiber heavy-duty anticorrosive material of Xi'an Hua Jie Sci.&Tech Developing Co., Ltd.'s production, and shape is in fibre
Dimension shape, 40~80nm of partial size, 2~3 μm of length, conductivity 13s/m.
In terms of weight antirust.Nanoparticle size is small, large specific surface area, have very high surface can, which can be with
Metal surface forms one layer of invisible binary interface protective film, which keeps metal positive under water or salting liquid effect
Pole is in purifying current potential, and metal surface can be made to form fine and close oxide passivation layer, has anodic protection effect, anodic protection
Afterwards, nano-macromolecule material serves as catalyst, to interfere metal to be oxidized to this chemical reaction of becoming rusty.Electronics first is drawn from metal,
Then it is passed in oxygen.The two steps will form one layer of pure-oxide to prevent to corrode.
Nanofiber high molecular material is capable of forming fine and close intercommunication interpenetrating conductive network structure, keeps corrosion of metal electric
Position increases and (increases 223mv), 173.2 μ A/cm of the close decline of corrosion current2, corrosion electric current density substantially reduces, and corrosion occurs
Condition and difficulty improve, and corrosion is not susceptible to.
Due to forming fine and close intercommunication interpenetrating conductive network structure, electronics is mobile to coating surface, redox reaction hair
Life occurs to be spatially separating reaction with metal formation in metal surface, protect metal not rotten in the outer surface of paint
Erosion.Multifunctional nano high molecular material, in preservation process, the advantage for having reversible oxidation ← → reduction characteristic, not being lost, anti-corrosion
Function was up to 50 years as long as；
Binary interface can substantially reduce the surface tension of metal material again simultaneously, enable the surface of material be reduced to 10~
15mJ/m3, reach material surface modifying, acid, alkali, salt, water vapour and nuisance are not easy Nian Jie with surface, have material surface
The erosion of acid-proof, alkali, salt, water vapour and nuisance to metal surface, reaches the function of high-performance antirust, anti-corrosive；
Nano-high molecule fibrous material is highly stable to acid, alkali, salt, water vapour and nuisance, due to its big specific surface
Long-pending and special geometry can form fine and close separation layer, can effectively obstruct acid, alkali, salt, water vapour and nuisance to gold
The erosion of metal surface.Nanofiber high molecular material and resin can form metallo-plastic, the spies such as the acidproof, alkaline-resisting of overlength, salt tolerant
Property, it is high-performance rush-resisting material of new generation, and improve the ageing resistance of coating, makes the big raising of the colour fasteness to sunlight of coating, it can
So that painting color is kept permanent bright-coloured constant, there is unprecedented functional stabilization.
Design central principle is: using functions such as superpower acidproof, the alkaline-resisting, salt tolerants of nano anti-corrosive material, in New-type long-acting
The anti-rock burst apparatus surface in corrugated plating tunnel forms nanofiber high-performance heavy antisepsis " metallo-plastic " composite membrane protective layer, to have
Effect prevents corrosion of the corrosive liquid to corrugated steel.
Lot of experimental data and engineering verification show: this novel nano fiber anti-corrosion " metallo-plastic " composite membrane goes out
It is existing, become the most effectual way for solving this problem of ripple corrosion of steel under tunnel corrosion adverse circumstances.
Material itself is free of the heavy metals such as Zn, Cr, Pb, has excellent environment-friendly function；
The material is novel high-tech environment-friendly materials, nontoxic, harmless, tasteless, environmentally friendly, protects construction personnel's health.
The technical parameter that the present invention is implemented:
1. technical requirements
(1) in tunnel under Special Corrosion environment, the anti-rock burst device anticorrosion time limit 100 in New-type long-acting corrugated plating tunnel
Year.
(2) composite membrane insulate, resistance >=1012Ω
2. novel corrugated plate tunnel rock burst protective device product substrate specifications and models and requirement
(1) steel plate material: Q235 or SS400 hot rolled steel plate
(2) steel plate thickness: 2mm-8mm
(3) by assembling form point: assembling-type
(4) caliber: integrating tunnel radius determines
(5) waveform parameter: pitch of waves P* depth of convolution D (unit mm)
300*110；400*180 etc.
(6) pressure rank: 0.1-6.0mpa
(7) anti-concentration carries N (KGF) 100N deflection no more than 0.2%
(8) resist and uniformly carry (KGF), deflection is not more than 0.1D
(9) vertical leakage: water-tight
(10) axial tension N (KGF) 2450N bellows does not damage
(11) not spillage when counter-bending test R=300
(12) appearance: clean appearance, no hole, seaming is without cracking, no tripping
2, composite membrane forms:
The rock burst of novel corrugated plate tunnel protective device special-purpose nanometer fiber high-performance heavy antisepsis " metallo-plastic " composite membrane, by
The dedicated current potential of SD360 nanofiber tunnel base paint special, SD320 nano tunnel adjust paint, curing agent, organic solvent form (with
Upper material is produced by Xi'an Hua Jieaohai new material company).
3, composite membrane is prepared
1. SD360 nanofiber tunnel base paint special.
Preparation method: it is prepared by Xi'an Hua Jieaohai new material company SD360 nanofiber tunnel base paint special specification.
2. the dedicated current potential of SD320 nano tunnel adjusts paint.
Preparation method: paint specification is adjusted by the dedicated current potential of Xi'an Hua Jieaohai new material company SD320 nano tunnel and is matched
System.
Main performance index is as follows:
Actual tunnel data:
1. hydrochemistry composition in the dry season tunnel of Dayao Mountain:
Former Ministry of Railways's construction department tissue has set up " Dayaoshan Tunnel harness the river research of technique group ", to hydrochemistry in tunnel point
Sand ensaying is analysed and gushed, is judged the purpose is to the supply source to hole Nei Shui and sand and to the corrosive environment of facility in hole.
Being harnessed the river according to Dayaoshan Tunnel, " mineral point of sand are analyzed and gushed to Dayaoshan Tunnel water burst hydrochemistry for technology research project research
Analysis " is as follows:
Hydrochemistry composition significance analysis table in the dry season tunnel of Dayao Mountain
O indicates that the more significant * * * of the not significant significant * * of * is very significant
Hydrochemistry composition significance analysis table in the rainy season tunnel of Dayao Mountain
O indicates that the more significant * * * of the not significant significant * * of * is very significant
2. Sichuan-Tibet railway
Sichuan-Tibet railway in High aititude, big height difference, crustal uplift, squeeze strong, the special geology background of river rapidly incision
Under, lead to a series of exogenic process and endogenic geological process, there are high-intensity earthquake, high-ground stress, highlands for barrel
The engineering diseases such as temperature, Stratigraphic Time is distributed from Sinian system to-Cenozoic in region, and geological conditions is extremely complex.
According to preliminary judgement, ambient tunnel temperature, minimum reachable -30 DEG C of general location low temperature reaches as high as 30 DEG C, and day temperature
Poor big (60 degrees Celsius about poor)；Gao Yanwen high water temperature region is such as encountered, temperature may be more than 60 DEG C in hole.It is empty in tunnel simultaneously
Gas relative humidity is likely to be breached 90% or more, the close saturation of water vapour content in air.
Tunnel internal corrosion medium, presently mainly can lava location karst corrosivity, due in karstic ground water contain CO2
Concentration is larger, has stronger corrosivity, etch-proof problem must be taken into consideration in Tunnel, using anticorrosion concrete material
Material, tunnel water proofing layer material will also increase accordingly Testing index, guarantee the durability under CO2 saturated concentration.
3. Special Corrosion environment in tunnel
Ensaying and the Sichuan-Tibet railway investigation result that sand is analyzed and gushed according to Dayaoshan Tunnel water burst hydrochemistry are comprehensive
Showing: due to High aititude in tunnel, big height difference, crustal uplift, squeezing strong, river is rapidly under the special geology background of incision,
Lead to a series of exogenic process and endogenic geological process, there are high-intensity earthquake, high-ground stress, High-geotemperatures etc. for barrel
Engineering disease, Stratigraphic Time is distributed from Sinian system to-Cenozoic in region, and geological conditions is extremely complex, forms tunnel
Interior Special Corrosion environment.
Ambient tunnel temperature, minimum reachable -30 DEG C of general location low temperature reach as high as 30 DEG C, and temperature difference per day big (about poor 60
Degree Celsius)；Gao Yanwen high water temperature region is such as encountered, temperature may be more than 60 DEG C in hole.Relative air humidity in tunnel simultaneously
It is likely to be breached 90% or more, the close saturation of water vapour content in air.
PH value 0.1~7.58, conductivity 4.07~33.39, Ca++0.03~64.10, Mg++0.31~1.34,
Total hardness 0.06~11.64, total alkalinity 0.09~106.9, HCO3 0.31~109.8, CI-0.04~6.39
Free CO2 1.101~27.918.From upper table analysis, significant to corrosion impact have 18, and more significant 4,
Significant 1, illustrate that tunnel internal corrosion factor is extremely complex.
Comprehensive study analysis: tunnel internal corrosion is different from corrosive environment as defined in ISO 12944-2, but forms tunnel
Interior Special Corrosion environment.Its main feature is that the temperature difference is big, about 60 degrees Celsius of the temperature difference of day, relative air humidity is likely to be breached 90% or more,
The close saturation of water vapour content in air.Water burst hydrochemistry is complex in composition, gushes sand contains a large amount of mineral ions, the conductance of water
Rate is high, containing acid, alkali in solution, causes serious chemical attack serious.
Tunnel internal corrosion environment conclusion: ISO 12944-2 C5-I corrosive environment and corrosive chemical environments comprehensive function are
Extremely complex, harsh tunnel Special Corrosion environment.
The anti-rock burst device anticorrosion composite membrane in New-type long-acting corrugated plating tunnel is studied successfully, and the special corruption in tunnel is efficiently solved
It loses under adverse circumstances, the problem of novel corrugated plate rock burst protective device fails because of anticorrosion, can not be used for a long time, meets novel
The requirement of corrugated plating rock burst 100 years service life of protective device.After tunnel excavation, assembled corrugated culvert can be applied in time, and opened
Digging process can closely be connected, without accelerating construction progress, improving safety as carrying out supporting again after rock burst generation after excavating in the past
Property.
Anticorrosion composite membrane technology is applied to the anti-rock burst device in novel corrugated plate tunnel, not only meets anticorrosion in 100 years and wants
It asks, and ensure that construction speed, safety in production, improve work efficiency.Realize long term support, insulating properties, convenient and efficient
Target easy to operate, cost performance is high.Technical indicator is as follows:
The anti-rock burst device anticorrosion composite membrane technology index in New-type long-acting corrugated plating tunnel
The anti-rock burst device in metal bellows tunnel solves Anticorrosion, may not only be applied to rock burst tunnel, can also be applied to
The engineerings such as common surrounding rock tunnel, high ground stress soft rock stress tunnel, open cut tunnel, Curing of Tunnel Diseases, so it is applied to bridge Culvert engineering,
Application prospect is extensive, and economic benefit is prominent.The long-acting anti-rock burst device anticorrosion composite membrane in corrugated plating tunnel is studied successfully, middle iron
It is applied in following three tunnels at one Group Co., Ltd, surveying and designing institute bridge tunnel:
Lanzhou to Chongqing " railway horse tunnel " anti-rock burst engineering.Houma is to moon mountain railway " tunnel Tao Ping " Disease Treatment.
Xi'an is to Yan'an railway tunnel " spreading open cut tunnel " engineering.
Three above tunnel uses the anti-rock burst device in New-type long-acting corrugated plating tunnel, from rock burst tunnel, Curing of Tunnel Diseases
Three engineering, common surrounding rock tunnel, high ground stress soft rock stress tunnel, open cut tunnel different application fields, to New-type long-acting corrugated plating tunnel
Anti- rock burst device anticorrosion composite membrane has carried out engineering verification, and using effect is significant, can effectively solve the problem that tunnel Special Corrosion is disliked
Under bad environment, the problem of novel corrugated plate rock burst protective device fails because of anticorrosion, can not be used for a long time, meet New type corrugated
The requirement of the quick-fried 100 years service life of protective device of slate.After tunnel excavation, assembled corrugated culvert can be applied in time, with excavation work
Sequence can closely be connected, without accelerating construction progress, improving safety as carrying out supporting again after rock burst generation after excavating in the past.
Claims (3)
1. a kind of anti-corrosion-resistant composite membrane of rock burst device in long-acting corrugated plating tunnel, which is characterized in that SD360 nanofiber tunnel is special
The road bottom 6-7 is applied to priming paint, 400 μm of dry film overall thickness of SD360 nanofiber tunnel base paint special, SD320 nano tunnel
Dedicated current potential adjusts paint and is applied to surface 1, and the dedicated current potential of SD320 nano tunnel adjusts 80 μm of dry film overall thickness of paint, long-acting wave
Corrosion-resistant 480 μm of composite membrane overall thickness of the anti-rock burst device in card tunnel.
2. a kind of implementation method of the anti-corrosion-resistant composite membrane of rock burst device in long-acting corrugated plating tunnel, which is characterized in that including following
Step:
1) the dedicated current potential of SD360 nanofiber tunnel base paint special, SD320 nano tunnel is selected to adjust paint, curing agent, You Jirong
Agent；
2) substrate surface pre-treatment before film forming is constructed:
A, corrugated steel surface substrate carries out surface sand-blasting process；
B, abrasive blasting derusting reaches Sa3 grades, and privileged sites reach St3 grades using power tool polishing derusting；
C, surface requirements are clean, dry when constructing, all macroscopic greases, oil, dirt, lubricant and other pollutant palpuses
All remove；
D, repeated cleaning must be carried out before per pass paint application to construction surface, keeps ventilation, inner wall keeps dry state；
3) surface cleaning state reaches the requirement of above-mentioned construction front surface, starts SD360 nanometers of first of spraying according to design thickness
Fiber tunnel base paint special is to bottom, 65 μm of thickness of dry film, and cannot have the generation of holiday defect, especially for abutment joint region into
Row pre-coating, to reach reliable anti-corrosion effect；
4) after first of SD360 nanofiber tunnel base paint special of step 3) is done something in disregard of obstacles, start spraying according to design thickness
Two SD360 nanofiber tunnel base paint specials are to prime paint surface, 65 μm of second paint thickness of dry film, in strict accordance with spraying
Technique is constructed, and holiday is avoided to generate；
5) after the second SD360 nanofiber tunnel base paint special of step 4) is done something in disregard of obstacles, start spraying according to design thickness
Three SD360 nanofiber tunnel base paint specials are to second paint surface, 65 μm of third road paint thickness of dry film, in strict accordance with spraying
Technique is constructed, and holiday is avoided to generate；
6) after the third road SD360 nanofiber tunnel base paint special of step 5) is done something in disregard of obstacles, start spraying according to design thickness
Four SD360 nanofiber tunnel base paint specials are to third road paint surface, the 4th 65 μm of paint thickness of dry film, in strict accordance with spraying
Technique is constructed, and holiday is avoided to generate；
7) after the 4th SD360 nanofiber tunnel base paint special of step 6) is done something in disregard of obstacles, start spraying according to design thickness
Five SD360 nanofiber tunnel base paint specials to the 4th paint surface, the 5th 65 μm of paint thickness of dry film, in strict accordance with spraying
Technique is constructed, and holiday is avoided to generate；
8) after the 5th SD360 nanofiber tunnel base paint special of step 7) is done something in disregard of obstacles, start spraying according to design thickness
Six SD360 nanofiber tunnel base paint specials to the 5th paint surface, the 6th 65 μm of paint thickness of dry film, in strict accordance with spraying
Technique is constructed, and holiday is avoided to generate；
9) after the 6th SD360 nanofiber tunnel base paint special of step 8) is done something in disregard of obstacles, start spraying according to design thickness
The dedicated current potential of one of SD320 nano tunnel adjusts paint to the 6th paint surface, the 7th 80 μm of paint thickness of dry film, in strict accordance with spray
It applies technique to construct, holiday is avoided to generate；
10) it after the 7th paint surface is done something in disregard of obstacles, carries out routine examination to entire compound layer surface, 480 ± 10 μm of dry film overall thickness
Coating defect problems should be handled in time, entire coat system must satisfy coating process check criteria, must after repairing
Day must be dried under natural environmental condition, is routinely checked again, it is ensured that can be put into production use after qualified.
3. a kind of long-acting anti-corrosion-resistant composite membrane of rock burst device in corrugated plating tunnel according to claim 1, which is characterized in that
The corrosion-resistant composite membrane is capable of forming fine and close intercommunication interpenetrating conductive network structure, increases corrosion of metal current potential and (rises
High 223mv), 173.2 μ A/cm of the close decline of corrosion current2, corrosion electric current density substantially reduces, the condition and difficulty that corrosion occurs
Degree improves, and corrosion is not susceptible to, and has anodic protection effect, after anodic protection, due to forming fine and close intercommunication interpenetrating conductive mesh
Network structure, electronics is mobile to coating surface, and redox reaction occurs in the outer surface of paint, rather than occurs in metal surface,
It is spatially separating reaction with metal formation, metal is protected not to be corroded, structure design, while meeting corrugated plating surface recombination film
Insulation, resistance >=1012Ω, and adhesive force >=22MP of corrosion-resistant composite membrane and substrate steela, chloride permeability rate (mg/
cm2.d)≤3.6×10-5It is the critical support of the anti-rock burst device anticorrosion long life anti corrosion in corrugated plating tunnel；And it is corrosion-resistant multiple
Film elongation at break is closed, greater than the maximum displacement value under substrate limiting temperature situation, nanofiber heavy-duty anticorrosive " metallo-plastic " is multiple
The elongation at break for closing film is 62.9%.
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