CN212508355U - Seasonal frozen soil highway tunnel insulation construction - Google Patents
Seasonal frozen soil highway tunnel insulation construction Download PDFInfo
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- CN212508355U CN212508355U CN202021342418.8U CN202021342418U CN212508355U CN 212508355 U CN212508355 U CN 212508355U CN 202021342418 U CN202021342418 U CN 202021342418U CN 212508355 U CN212508355 U CN 212508355U
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- seasonal frozen
- secondary lining
- drainage ditch
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Abstract
The utility model discloses a seasonal frozen soil highway tunnel heat preservation structure, which comprises a secondary lining, a cable trench, a central drainage ditch and a transverse drainage pipe; the cable trench is arranged on the tunnel arch springing along the longitudinal direction of the tunnel and is positioned on the inner side of the secondary lining; the central drainage ditch is longitudinally arranged at the inverted arch of the tunnel along the tunnel, the transverse drainage pipe is transversely arranged at the inverted arch of the tunnel along the tunnel, the transverse drainage pipe is communicated with the central drainage ditch, and transparent heat-insulating paint is sprayed on the surface of the secondary lining facing the tunnel. The utility model relates to a seasonally frozen soil highway tunnel insulation construction through setting up above-mentioned structure, can ensure through keeping warm to the lining cutting that the tunnel is not frozen. The material is easy to get, the construction is simple, the surface of the second lining is coated with a transparent heat insulation layer, the patrol during the operation is convenient, and the quality problem of the second lining can be found in time.
Description
Technical Field
The utility model relates to a tunnel engineering technical field, concretely relates to seasonally frozen soil highway tunnel insulation construction.
Background
In recent years, more and more highways in alpine regions are planned and constructed. The highway brings great convenience to traffic in seasonally frozen soil areas. But due to the special low-temperature and rich-water meteorological and hydrogeological conditions in the cold area, great difficulty is brought to the construction of the tunnel in the cold area. The tunnel lining cracking, ice hanging and frost heaving of a plurality of cold areas bring great potential safety hazards to the tunnel operation. For many years, how to improve the anti-freezing performance of the cold region tunnel is always the key point, the difficulty point and the pain point of the cold tunnel construction.
At present, the research work of tunnel lining heat preservation and frost resistance in cold regions of various countries is mainly focused on two aspects. First, basic theoretical research work. The method is particularly used for researching the freezing and thawing characteristics of the tunnel surrounding rock, the freezing depth, the thermal performance of the tunnel surrounding rock, the concrete tunnel lining and the heat-insulating material, the structural form design of the tunnel lining, and the influence of the conditions of engineering site climate, hydrology and the like. The second is the research work of the application technology. On the basis of basic theoretical research work, the technical measures of heat preservation and frost resistance of the tunnel are taken, a durable heat preservation and insulation material is developed, and the reasonable thickness, the set length, the set form and the like of the heat preservation and insulation layer are researched. In the aspect of heat preservation, a polyurethane heat preservation layer is generally arranged on the surface of a lining, the surface of the whole lining is sealed, and once the lining is cracked, deformed, peeled and seeped after the surface of the lining is sealed, the crack, the peel and the seeped water cannot be found unless the seeped water runs to the surface of the heat preservation layer or the lining is seriously deformed and collapses, so that great potential safety hazards are brought to tunnel operation and structure.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that among the current tunnel heat preservation technique, the lining cutting fracture warp, peel off, the difficult discovery of infiltration, aim at provides a seasonally frozen soil highway tunnel insulation construction, solves above-mentioned problem.
The utility model discloses a following technical scheme realizes:
a thermal insulation structure of a seasonal frozen soil highway tunnel comprises a secondary lining, a cable trench, a central drainage ditch and transverse drainage pipes; the cable trench is arranged on the tunnel arch springing along the longitudinal direction of the tunnel and is positioned on the inner side of the secondary lining; the central drainage ditch is longitudinally arranged at the inverted arch of the tunnel along the tunnel, the transverse drainage pipe is transversely arranged at the inverted arch of the tunnel along the tunnel, the transverse drainage pipe is communicated with the central drainage ditch, and transparent heat-insulating paint is sprayed on the surface of the secondary lining facing the tunnel.
The utility model discloses during the application, the thermal-insulated coating of spraying under injection pressure, can be abundant with concrete surface contact, can fully fill concrete surface cavity, not only improve the quality of concrete itself, can insulate against heat simultaneously again. The transparent coating is used for facilitating daily inspection and maintenance to find out in time when the secondary lining concrete has any quality problem. The utility model discloses a set up above-mentioned structure, can ensure through keeping warm to the lining cutting that the tunnel is not frozen. The material is easy to get, the construction is simple, the surface of the second lining is coated with a transparent heat insulation layer, the patrol during the operation is convenient, and the quality problem of the second lining can be found in time.
Further, the transparent heat insulation coating comprises an indium tin oxide water-based material and a tungsten oxide heat insulation material.
Further, a first thermal insulation coating is arranged on the inner side wall of the cable trench.
The utility model discloses during the application, the primary function of first thermal barrier coating is protection wall back of the body vertical drain pipe and secondary lining.
Further, a second heat insulation coating is arranged on the inner side wall of the central drainage ditch.
Further, the transverse drain pipe is a single-wall corrugated pipe.
Furthermore, the single-wall corrugated pipe is sleeved with insulating foam rubber.
The utility model discloses during the application, the horizontal single wall bellows overcoat of vertical water pipe and the tunnel bottom longitudinal drainage ditch behind the hookup side wall has insulating foam rubber, as the heat preservation. The insulating foam rubber is of a closed-cell structure and low in heat conductivity coefficient, and the thickness of the insulating foam rubber is determined according to the heat preservation calculation temperature of the tunnel site area.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
1. the utility model relates to a seasonally frozen soil highway tunnel insulation construction through setting up above-mentioned structure, can ensure through keeping warm to the lining cutting that the tunnel is not frozen. The material is easy to get, the construction is simple, the surface of the second lining is coated with a transparent heat insulation layer, the patrol during the operation is convenient, and the quality problem of the second lining can be found in time.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Reference numbers and corresponding part names in the drawings:
1-secondary lining, 2-transparent heat insulation coating, 3-cable trench, 4-first heat insulation coating, 5-central drain trench, 6-second heat insulation coating and 7-transverse drain pipe.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Examples
As shown in fig. 1, the utility model relates to a seasonal frozen soil highway tunnel heat preservation structure, which comprises a secondary lining 1, a cable trench 3, a central drainage ditch 5 and a transverse drainage pipe 7; the cable trench 3 is arranged at the arch springing of the tunnel along the longitudinal direction of the tunnel and is positioned at the inner side of the secondary lining 1; the tunnel invert department is vertically arranged in along the tunnel to central drainage ditch 5, tunnel invert department is transversely arranged in along the tunnel to horizontal drain pipe 7, just horizontal drain pipe 7 communicate in central drainage ditch 5, the transparent thermal-insulated coating of spraying on the secondary lining 1 surface towards the tunnel.
When the embodiment is implemented, the sprayed heat insulation coating can be fully contacted with the surface of concrete under the spraying pressure, and can fully fill the cavities on the surface of the concrete, so that the quality of the concrete is improved, and heat insulation is realized. The transparent coating is used for facilitating daily inspection and maintenance to find out in time when the secondary lining concrete has any quality problem. The utility model discloses a set up above-mentioned structure, can ensure through keeping warm to the lining cutting that the tunnel is not frozen. The material is easy to get, the construction is simple, the surface of the second lining is coated with a transparent heat insulation layer, the patrol during the operation is convenient, and the quality problem of the second lining can be found in time.
To further illustrate the operation of this example, the transparent thermal insulation coating comprises an indium tin oxide aqueous material and a tungsten oxide thermal insulation material.
For further explanation of the operation of the present embodiment, a first thermal barrier coating 4 is provided on the inner side wall of the trench 3.
When the embodiment is implemented, the main function of the first heat-insulating coating is to protect the longitudinal drainage pipe on the back of the wall and the secondary lining.
To further illustrate the operation of this embodiment, a second thermal barrier coating 6 is provided on the inner side wall of the center drain 5.
For further explanation of the working process of this embodiment, the transverse drain pipe 7 is a single-wall corrugated pipe.
To further illustrate the operation of this embodiment, the single-walled corrugated tube is externally sleeved with an insulating foam rubber.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A thermal insulation structure for a seasonal frozen soil highway tunnel comprises a secondary lining (1), a cable trench (3), a central drainage ditch (5) and a transverse drainage pipe (7); the cable trench (3) is arranged at the arch springing of the tunnel along the longitudinal direction of the tunnel and is positioned at the inner side of the secondary lining (1); tunnel invert department is vertically arranged in along the tunnel in central drainage ditch (5), tunnel invert department is transversely arranged in along the tunnel in horizontal drain pipe (7), just horizontal drain pipe (7) communicate in central drainage ditch (5), its characterized in that, secondary lining (1) sprays transparent thermal-insulated coating on the surface towards the tunnel.
2. The seasonal frozen earth road tunnel insulation structure of claim 1, wherein the transparent thermal insulation coating comprises an indium tin oxide aqueous material and a tungsten oxide thermal insulation material.
3. The seasonal frozen earth road tunnel insulation structure according to claim 1, wherein a first thermal barrier coating (4) is provided on an inner side wall of the cable trench (3).
4. The seasonal frozen earth road tunnel insulation structure according to claim 1, wherein a second thermal insulation coating (6) is provided on an inner side wall of the center drain (5).
5. The seasonal frozen earth road tunnel insulation structure of claim 1, wherein the transverse drain pipe (7) is a single-wall corrugated pipe.
6. The seasonal frozen soil road tunnel insulation structure of claim 5, wherein the single-wall corrugated pipe is externally sheathed with insulating foam rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021342418.8U CN212508355U (en) | 2020-07-09 | 2020-07-09 | Seasonal frozen soil highway tunnel insulation construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021342418.8U CN212508355U (en) | 2020-07-09 | 2020-07-09 | Seasonal frozen soil highway tunnel insulation construction |
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| Publication Number | Publication Date |
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| CN212508355U true CN212508355U (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021342418.8U Active CN212508355U (en) | 2020-07-09 | 2020-07-09 | Seasonal frozen soil highway tunnel insulation construction |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153378A (en) * | 2021-03-30 | 2021-07-23 | 中交第一公路勘察设计研究院有限公司 | Open type cold-absorbing anti-melting structure of permafrost tunnel |
| CN113153378B (en) * | 2021-03-30 | 2024-04-19 | 中交第一公路勘察设计研究院有限公司 | Openable cold absorbing and thawing preventing structure for permafrost tunnel |
-
2020
- 2020-07-09 CN CN202021342418.8U patent/CN212508355U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153378A (en) * | 2021-03-30 | 2021-07-23 | 中交第一公路勘察设计研究院有限公司 | Open type cold-absorbing anti-melting structure of permafrost tunnel |
| CN113153378B (en) * | 2021-03-30 | 2024-04-19 | 中交第一公路勘察设计研究院有限公司 | Openable cold absorbing and thawing preventing structure for permafrost tunnel |
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