CN102140922A - Novel tunnel anti-freezing and heat-insulating layer - Google Patents
Novel tunnel anti-freezing and heat-insulating layer Download PDFInfo
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- CN102140922A CN102140922A CN2011100783525A CN201110078352A CN102140922A CN 102140922 A CN102140922 A CN 102140922A CN 2011100783525 A CN2011100783525 A CN 2011100783525A CN 201110078352 A CN201110078352 A CN 201110078352A CN 102140922 A CN102140922 A CN 102140922A
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Abstract
The invention relates to a novel tunnel anti-freezing and heat-insulating layer which has the advantages of favorable anti-freezing and heat-insulating effect, low construction difficulty and high utilization rate of materials and is easy to operate. The novel tunnel anti-freezing and heat-insulating layer comprises a tunnel secondary lining layer. The novel tunnel anti-freezing and heat-insulating layer is characterized in that the outer surface of the tunnel secondary lining layer is sequentially provided with a heat-insulating material layer, an interface agent layer, a mortar layer and a fire retardant coating layer from inside to outside.
Description
One, technical field:
The structure that the present invention relates to a kind of freezing damage in tunnel prevention and dispose especially relates to a kind of novel tunnel anti-freezing thermal-protective layer.
Two, background technology:
In the background technology, be positioned at the tunnel of high height above sea level cold district, often since winter cold air intrusion, cause the tunnel to produce freeze injury, such as lining cutting leak icing, the road surface spilling water freezes and lining cutting flake-off piece etc.Freeze injury not only makes tunnel lining structure suffer to destroy (cracking, crisp, peel off), and seriously injures traffic safety.Therefore, newly-built and existing tunnel are carried out the freeze injury prevention and punish just seeming particularly important.At present, the technical method that the prevention of freezing damage in tunnel and disposal adopt anti-draining and anti-freezing thermal-protective layer to combine, this is because at the bigger cold district of the depth of frost penetration, water discharge technology is prevented in simple employing, can not guarantee that lining cutting back underground water does not freeze.Therefore, must adopt the method for anti-freezing thermal-protective layer insulation on the basis of anti-draining, guarantee that lining cutting back underground water does not freeze, the drainage system normal operation avoids the lining cutting back that frost heave takes place.Anti-freezing thermal-protective layer commonly used has 2 kinds, and a kind of is that warming plate is laid on the surface, promptly adopts the prefabricated thermal insulation plate to carry out the method for mating formation in the scene on the Tunnel Second Lining surface; Another lays warming plate in the middle of being, promptly adopts the prefabricated thermal insulation plate to carry out the method for mating formation in the scene between waterproofing course and secondary lining.These adopt the prefabricated thermal insulation plate to carry out the method that antifreeze thermal insulation is handled, and it is above freezing that tunnel lining temperature behind is raised to, and plays the effect of thermal insulation, can solve the freeze injury problem of tunnel in cold area theoretically fully.But, because laying the anti-freezing thermal-protective layer of warming plate, the surface adopts keel skeletal fixation warming plate, the keel skeleton can produce the cold bridge effect, and the effect of heat insulation of warming plate is reduced greatly.The warming plate of middle laying anti-freezing thermal-protective layer is impaired easily in construction, and maintenance difficult.Simultaneously, these two kinds of anti-freezing thermal-protective layer working procedure complexity, the execute-in-place difficulty is big, wastes time and energy deficiency in economic performance.
Three, summary of the invention:
The present invention provides a kind of novel tunnel anti-freezing thermal-protective layer in order to solve the weak point in the above-mentioned background technology, can obtain good antifreeze thermal insulation effect, and difficulty of construction is little.
For achieving the above object, the technical solution used in the present invention is:
A kind of novel tunnel anti-freezing thermal-protective layer comprises the Tunnel Second Lining layer, it is characterized in that: Tunnel Second Lining layer external surface is disposed with adiabator layer, interfacial agents layer, screed and fireproof paint layer from inside to outside.
Compared with prior art, the advantage and the effect that have of the present invention is as follows:
Spray coating heat preservation material bonding of the present invention is closely knit, can obtain good antifreeze thermal insulation effect; Surface spraying easy operating, difficulty of construction is little, and coating thickness is even relatively, and the stock utilization height has good economic benefit.
Four, description of drawings:
Fig. 1 is a structural representation of the present invention.
Among the figure, 1-secondary lining layer, 2-adiabator layer, 3-interfacial agents layer, 4-screed, 5-fireproof paint layer.
Five, the specific embodiment:
Referring to Fig. 1, the present invention includes Tunnel Second Lining layer 1, Tunnel Second Lining layer 1 external surface is disposed with adiabator layer 2, interfacial agents layer 3, screed 4 and fireproof paint layer 5 from inside to outside.
The present invention adopts foaming thermal-insulating, uses machinery to be sprayed directly into the Tunnel Second Lining surface, forms anti-freezing thermal-protective layer.Job practices is: at first at tunnel lining surface spray coating foaming heat insulating material, then to the fixing linked network of sprayed coating, and carry out interfacial agents and mortar modification, spray fireproof coating exclusively at last and handle.Its sequence of construction is followed successively by: the planeness of 1, checking the Tunnel Second Lining surface; 2, remove the Tunnel Second Lining surface contaminants; 3, spray the heat insulating material of foam-in-place on the Tunnel Second Lining surface; 4, the surperficial fixedly linked network of sprayed coating; 5, interfacial agents is smeared on the sprayed coating surface; 6, sprayed coating surface mortar is modified; 7, spraying fireproof coating exclusively.
Concrete technology is:
1, checks the planeness on Tunnel Second Lining surface.Thin projections for the lining cutting surface must be removed; Faulting of slab ends and uneven position for seam crossing between Tunnel Second Lining plate and the plate must cut and polish flat; For large-area hollowing, cracking and efflorescence layer, must remove and repair.Hollowing, area of cracks should adopt alignment material that it is carried out levelling during less than 0.1m * 0.1m.Hollowing, area of cracks should be rejected greater than the position of 0.1m * 0.1m.
2, remove the Tunnel Second Lining surface contaminants.Must not there be floating dust on the Tunnel Second Lining surface, drips slurry, greasy dirt, hollowing and alice etc., and basic unit should be dry, solid smooth; Should carry out protection against the tide and waterproofing work earlier for moist wall and permeable wall; In the time of if necessary, Tunnel Second Lining surface spray painting body of wall basic unit interfacial agents.
3, at the heat insulating material of lining cutting surface spray coating foaming.After heat insulating material foamed, adopting mechanically spraying,, heat insulating material is sprayed to the Tunnel Second Lining surface according to control line, THICKNESS CONTROL is a design thickness and allow+error of 6mm, continuous during the spray coating heat preservation material, full, fault-layer-phenomenon must not take place.The temperature of spray coating heat preservation material should be at 10 ℃～40 ℃, high humidity or be exposed to the sun under forbid operation, treat the abundant slaking of heat insulating material after, to the polishing of planing of anti-freezing thermal-protective layer surface.
4, the surperficial fixedly linked network of sprayed coating.The hot-galvanized steel silk screen is fixed with steel nail, and the steel nail spacing is 500mm * 500mm.
5, interfacial agents is smeared on the sprayed coating surface.Hang the sprayed coating surface roller coating interfacial agents of hot-galvanized steel silk screen, each roller coat is one time anyhow, uniformity, does not leak roller coat.
6, sprayed coating surface mortar is modified.Adopt the polymer mortar emulsion, smear the thick mortar of 5mm, modify on the sprayed coating surface that has hung hot-galvanized steel silk screen and roller coat interfacial agents.
7, sprayed coating surface fireproof in tunnel is handled.At the two-layer fire-proof coating for tunnels of mortar decorative layer surface spraying.
Claims (1)
1. novel tunnel anti-freezing thermal-protective layer, comprise Tunnel Second Lining layer (1), it is characterized in that: Tunnel Second Lining layer (1) external surface is disposed with adiabator layer (2), interfacial agents layer (3), screed (4) and fireproof paint layer (5) from inside to outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110078352.5A CN102140922B (en) | 2011-03-30 | 2011-03-30 | Novel tunnel anti-freezing and heat-insulating layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110078352.5A CN102140922B (en) | 2011-03-30 | 2011-03-30 | Novel tunnel anti-freezing and heat-insulating layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102140922A true CN102140922A (en) | 2011-08-03 |
| CN102140922B CN102140922B (en) | 2014-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110078352.5A Expired - Fee Related CN102140922B (en) | 2011-03-30 | 2011-03-30 | Novel tunnel anti-freezing and heat-insulating layer |
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| CN (1) | CN102140922B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643974A (en) * | 2013-12-16 | 2014-03-19 | 中铁二十三局集团第四工程有限公司 | Construction method for freeze-proof thermal-insulating layer of high and cold tunnel |
| CN108252260A (en) * | 2018-01-26 | 2018-07-06 | 内蒙古绰勒水利水电有限责任公司 | A kind of anti-maintenance construction method degraded |
| CN109882213A (en) * | 2019-04-24 | 2019-06-14 | 吉林大学 | A kind of novel tunnel in cold area anti-freezing and heat-insulating structure and its construction method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2893030Y (en) * | 2006-02-28 | 2007-04-25 | 时华 | Rubber powder vitrifying micro-bead wall body thermal insulating fireproof system |
| CN101168980A (en) * | 2007-12-04 | 2008-04-30 | 陈秋 | Wall thermal insulation structure and construction method thereof |
| CN101851993A (en) * | 2010-05-14 | 2010-10-06 | 上海克络蒂材料科技发展有限公司 | Fireproof flame-retardant polyurethane external wall thermal-insulation system material |
| CN202047831U (en) * | 2011-03-30 | 2011-11-23 | 长安大学 | Novel anti-freezing thermal insulation layer for tunnel |
-
2011
- 2011-03-30 CN CN201110078352.5A patent/CN102140922B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2893030Y (en) * | 2006-02-28 | 2007-04-25 | 时华 | Rubber powder vitrifying micro-bead wall body thermal insulating fireproof system |
| CN101168980A (en) * | 2007-12-04 | 2008-04-30 | 陈秋 | Wall thermal insulation structure and construction method thereof |
| CN101851993A (en) * | 2010-05-14 | 2010-10-06 | 上海克络蒂材料科技发展有限公司 | Fireproof flame-retardant polyurethane external wall thermal-insulation system material |
| CN202047831U (en) * | 2011-03-30 | 2011-11-23 | 长安大学 | Novel anti-freezing thermal insulation layer for tunnel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643974A (en) * | 2013-12-16 | 2014-03-19 | 中铁二十三局集团第四工程有限公司 | Construction method for freeze-proof thermal-insulating layer of high and cold tunnel |
| CN108252260A (en) * | 2018-01-26 | 2018-07-06 | 内蒙古绰勒水利水电有限责任公司 | A kind of anti-maintenance construction method degraded |
| CN109882213A (en) * | 2019-04-24 | 2019-06-14 | 吉林大学 | A kind of novel tunnel in cold area anti-freezing and heat-insulating structure and its construction method |
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| Publication number | Publication date |
|---|---|
| CN102140922B (en) | 2014-05-28 |
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