CN108798728A - Tunnel in cold regions heat insulating construction method - Google Patents
Tunnel in cold regions heat insulating construction method Download PDFInfo
- Publication number
- CN108798728A CN108798728A CN201810887251.4A CN201810887251A CN108798728A CN 108798728 A CN108798728 A CN 108798728A CN 201810887251 A CN201810887251 A CN 201810887251A CN 108798728 A CN108798728 A CN 108798728A
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- CN
- China
- Prior art keywords
- tunnel
- thermal insulation
- insulation board
- fire
- heat insulating
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
Abstract
The invention discloses tunnel in cold regions heat insulating construction methods to set expansion bolt, thermal insulation board plate is made to be fixed on the surface of secondary lining, then lay fire-proof plate and sprayed fire proofing coating after secondary lining headroom, surface smoothness and infiltration situation passed examination.The beneficial effects of the invention are as follows：Working procedure is simple, and construction equipment is few, effective to shorten the construction period, to operating environment without particular/special requirement, and to small to environmental pollution, effectively reducing construction cost；The infiltration that the effective prevention spring melts phase appearance causes various freeze injuries, ensures the temperature and traffic safety of structure.
Description
Technical field
The present invention relates to tunnel insulation fireprotection layer technical field of construction, are tunnel in cold regions heat preservation constructions specifically
Method.
Background technology
With the fast development of China's communication, in particular with development of the West Regions and rejuvenating the northeast economic policy into
One step is implemented, and will be had a large amount of tunnel to build successively in the High aititude in western part and northern high latitude cold district, and be trembled with fear with previous
The tunnel of cryogenic region is compared, and scale meeting bigger, the technology in these tunnels require higher, and weather conditions are more severe.
It is the effectively measure to the prevention frost damage of Tunnel Engineering in the prior art；Therefore, current Tunnel Engineering is badly in need of
Effectively preventing Freezing.
Invention content
The purpose of the present invention is to provide tunnel in cold regions heat insulating construction methods, and working procedure is simple, and construction equipment is few,
It is effective to shorten the construction period, to operating environment without particular/special requirement, and to small to environmental pollution, effectively reducing and being constructed into
This；The infiltration that the effective prevention spring melts phase appearance causes various freeze injuries, ensures the temperature and traffic safety of structure.
The present invention is achieved through the following technical solutions：
Tunnel in cold regions heat insulating construction method is beaten after secondary lining headroom, surface smoothness and infiltration situation passed examination
If expansion bolt, thermal insulation board plate is made to be fixed on the surface of secondary lining, then lays fire-proof plate and sprayed fire proofing coating.
Further, in order to preferably realize the present invention,
Specifically include following steps：
Step S1：Preparation of construction；
Step S2：Insulated fire layer is constructed；
Step S22：Punch pre-buried expansion bolt；
Step S23：Mounting and adjusting U-shaped card part；
Step S24：Thermal insulation board is installed；
Step S25：Fire-proof plate is installed；
Step S26：Sprayed fire proofing coating；
Step S27：Cable trough insulating layer is constructed；Construction finishes.
Further, in order to preferably realize that the present invention, the step S2 further include step S21：Construction layout；Specifically
Refer to：According to tunnel head fall, insulating layer setting height, insulating layer width and lightgage steel joist spacing in secondary lining surface ink
Line setting-out.
Further, in order to preferably realize that the present invention, the step S24 specifically include：
Step S241：Thermal insulation board is penetrated by U-shaped card part, the gap between thermal insulation board is blocked using cranny filler of polyurethane foam,
Make thermal insulation board that secondary lining surface be completely covered；
Step S242：Fixed lightgage steel joist；It specifically refers to：U-shaped card part fixes U-shaped lightgage steel joist after penetrating thermal insulation board and bending
On U-shaped card part；The U-shaped lightgage steel joist extending direction is consistent with tunnel longitudinal direction.
Further, in order to preferably realize that the present invention, the step S25 specifically include following steps：
Step S251：Fire-proof plate is fixed on the keel shoe that U-shaped lightgage steel joist is formed；
Step S252：By the gap sealing between fire-proof plate.
Further, in order to preferably realize that the present invention, the step S6 include the following steps：
Step S261：It sprays for the first time；Base is sprayed using flush coater, is carried out from tunnel waist to top；
Step S262：After the first spraying parches, carries out second and spray；The time interval of spraying and second of spraying for the first time
At least 24 hours；
Step S263：Manual grinding, finishing.
Further, in order to preferably realize that the present invention, the step S27 specifically include following steps：
Step S271：In cable trough the plug-in thermal insulation board of expansion bolt is used close to the side of secondary lining；
Step S272：After the completion of step S271, the plug-in steel wire of thermal insulation board, and smear fire-proof cement mortar.
Compared with prior art, the present invention haing the following advantages and advantageous effect：
Working procedure of the present invention is simple, and construction equipment is few, effective to shorten the construction period, to operating environment without particular/special requirement, and
To with small to environmental pollution, effectively reducing construction cost；The infiltration that the effective prevention spring melts phase appearance causes various freeze injuries, protects
Demonstrate,prove the temperature and traffic safety of structure.
Specific implementation mode
The present invention is described in further detail with reference to embodiment, embodiments of the present invention are not limited thereto.
Embodiment 1：
The present invention is achieved through the following technical solutions, tunnel in cold regions heat insulating construction method, flat on secondary lining headroom, surface
After whole degree and infiltration situation passed examination, expansion bolt is set, so that thermal insulation board plate is fixed on the surface of secondary lining, then lays
Fire-proof plate and sprayed fire proofing coating.
It should be noted that by above-mentioned improvement, working procedure is simple, and construction equipment is few, effective to shorten the construction period,
To operating environment without particular/special requirement, and to small to environmental pollution, effectively reducing construction cost；The effective prevention phase of melting in spring goes out
Existing infiltration causes various freeze injuries, ensures the temperature and traffic safety of structure.
The other parts of the present embodiment are same as the previously described embodiments, and so it will not be repeated.
Embodiment 2：
The present embodiment advanced optimizes on the basis of the above embodiments, specifically includes following steps：
Step S1：Preparation of construction；
Step S2：Insulated fire layer is constructed；
Step S22：Punch pre-buried expansion bolt；
Step S23：Mounting and adjusting U-shaped card part；
Step S24：Thermal insulation board is installed；
Step S25：Fire-proof plate is installed；
Step S26：Sprayed fire proofing coating；
Step S27：Cable trough insulating layer is constructed；Construction finishes.
It should be noted that by above-mentioned improvement, preparation of construction specifically refers to：For the floating ash in Tunnel Second Lining surface,
The impurity such as greasy dirt, soil are first located clearly；Specifically use following technological means：First with clearly washing away, to uneven or office
It is repaired in the place of portion's faulting of slab ends, it is ensured that base face is smooth, needs advanced whereabouts water mending-leakage if the place for having leak.
The other parts of the present embodiment are same as the previously described embodiments, and so it will not be repeated.
Embodiment 3：
The present embodiment advanced optimizes on the basis of the above embodiments, and the step S24 is specifically included：
Step S241：Thermal insulation board is penetrated by U-shaped card part, the gap between thermal insulation board is blocked using cranny filler of polyurethane foam,
Thermal insulation board is set to be completely covered secondary lining surface, it must not there are gaps between thermal insulation board.
Step S242：Fixed lightgage steel joist；It specifically refers to：U-shaped card part penetrates U-shaped lightgage steel joist after thermal insulation board and bending
It is fixed on U-shaped card part；The U-shaped lightgage steel joist extending direction is consistent with tunnel longitudinal direction；U-shaped lightgage steel joist is needed
When lengthening the connection between U-shaped lightgage steel joist is carried out using extension piece.
The other parts of the present embodiment are same as the previously described embodiments, and so it will not be repeated.
Embodiment 4：
The present embodiment advanced optimizes on the basis of the above embodiments, and the step S25 specifically includes following steps：
Step S251：Fire-proof plate is fixed on the keel shoe that U-shaped lightgage steel joist is formed；
Step S252：By the gap sealing between fire-proof plate；Gap sealing using Special seal putty and guipure by fire-proof plate it
Between gap sealing, after each gap closing is complete, then polish flat, it is ensured that filleting line width is uniform, specious so that whole
A construction surface forms nature arc with tunnel.
The other parts of the present embodiment are same as the previously described embodiments, and so it will not be repeated.
Embodiment 5：
The present embodiment advanced optimizes on the basis of the above embodiments, and the step S6 includes the following steps：
Step S261：It sprays for the first time；Base using flush coater spray, from tunnel waist to top carry out, i.e., from below to up into
Row；
Step S262：After the first spraying parches, carries out second and spray；The time interval of spraying and second of spraying for the first time
At least 24 hours；
Step S263：Manual grinding, finishing so that its thickness meets design thickness requirement.
The other parts of the present embodiment are same as the previously described embodiments, and so it will not be repeated.
Embodiment 6：
The present embodiment is highly preferred embodiment of the present invention：
Tunnel in cold regions heat insulating construction method, specifically includes following steps：
Step S1：Preparation of construction；The impurity such as ash, greasy dirt, soil are floated for Tunnel Second Lining surface first to be located clearly；Specifically adopt
With following technological means：It first with clearly washing away, is repaired in the place to uneven or local faulting of slab ends, it is ensured that base face is flat
It is whole, need advanced whereabouts water mending-leakage if the place for having leak；It must test, examine for material involved in construction
It can come into operation after qualification.
Step S2：Insulated fire layer is constructed；
Step S21：Construction layout；It specifically refers to：According to tunnel head fall, insulating layer setting height, insulating layer width and light
Steel joist spacing is in the line of ink marker setting-out of secondary lining surface.
Step S22：Punch pre-buried expansion bolt；The expansion bolt depth of burying is not less than 5cm；
Step S23：Mounting and adjusting U-shaped card part；
Step S24：Thermal insulation board is installed；
Step S241：Thermal insulation board is penetrated by U-shaped card part, the gap between thermal insulation board is blocked using cranny filler of polyurethane foam,
Thermal insulation board is set to be completely covered secondary lining surface, it must not there are gaps between thermal insulation board.
Step S242：Fixed lightgage steel joist；It specifically refers to：U-shaped card part penetrates U-shaped lightgage steel joist after thermal insulation board and bending
It is fixed on U-shaped card part；The U-shaped lightgage steel joist extending direction is consistent with tunnel longitudinal direction；U-shaped lightgage steel joist is needed
When lengthening the connection between U-shaped lightgage steel joist is carried out using extension piece.
Step S25：Fire-proof plate is installed；The step S25 specifically includes following steps：
Step S251：Fire-proof plate is fixed on the keel shoe that U-shaped lightgage steel joist is formed using double tapping screw；It is fixed suitable
Sequence is m- other side edge in fire shield edges-by fixation.
Step S252：By the gap sealing between fire-proof plate；Gap sealing will be prevented fires using Special seal putty and guipure
Gap sealing between plate after each gap closing is complete, then polishes flat, it is ensured that filleting line width is uniform, specious, makes
It obtains entire construction surface and forms nature arc with tunnel.
Step S26：Sprayed fire proofing coating；The step S6 includes the following steps：
Step S261：It sprays for the first time；Base using flush coater spray, from tunnel waist to top carry out, i.e., from below to up into
Row；
Step S262：After the first spraying parches, carries out second and spray；The time interval of spraying and second of spraying for the first time
At least 24 hours；
Step S263：Manual grinding, finishing so that its thickness meets design thickness requirement.
Step S27：Cable trough insulating layer is constructed；Construction finishes.The step S27 specifically includes following steps：
Step S271：The thermal insulation board of the plug-in 5cm thickness of expansion bolt is used close to the side of secondary lining in cable trough；
Step S272：After the completion of step S271, the plug-in steel wire of thermal insulation board, and smear the fire-proof cement mortar of 1cm thickness.
Thermal insulation board employed in the present embodiment is prefabricated F13-1PU hard polyurethane foam boards；Fire-proof plate uses silicon
Sour calcium fire-proof plate.
The other parts of the present embodiment are same as the previously described embodiments, and so it will not be repeated.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is every according to
According to the technical spirit of the present invention to any simple modification, equivalent variations made by above example, the protection of the present invention is each fallen within
Within the scope of.
Claims (7)
1. tunnel in cold regions heat insulating construction method, it is characterised in that：In secondary lining headroom, surface smoothness and infiltration situation
After passed examination, expansion bolt is set, thermal insulation board plate is made to be fixed on the surface of secondary lining, then lay fire-proof plate and is sprayed anti-
Fiery coating.
2. tunnel in cold regions heat insulating construction method according to claim 1, it is characterised in that：Specifically include following step
Suddenly：
Step S1：Preparation of construction；
Step S2：Insulated fire layer is constructed；
Step S22：Punch pre-buried expansion bolt；
Step S23：Mounting and adjusting U-shaped card part；
Step S24：Thermal insulation board is installed；
Step S25：Fire-proof plate is installed；
Step S26：Sprayed fire proofing coating；
Step S27：Cable trough insulating layer is constructed；Construction finishes.
3. tunnel in cold regions heat insulating construction method according to claim 2, it is characterised in that：The step S2 further includes
Step S21：Construction layout；It specifically refers to：According to tunnel head fall, insulating layer setting height, insulating layer width and light steel dragon
Bone spacing is in the line of ink marker setting-out of secondary lining surface.
4. tunnel in cold regions heat insulating construction method according to claim 2, it is characterised in that：The step S24 is specific
Including：
Step S241：Thermal insulation board is penetrated by U-shaped card part, the gap between thermal insulation board is blocked using cranny filler of polyurethane foam,
Make thermal insulation board that secondary lining surface be completely covered；
Step S242：Fixed lightgage steel joist；It specifically refers to：U-shaped card part fixes U-shaped lightgage steel joist after penetrating thermal insulation board and bending
On U-shaped card part；The U-shaped lightgage steel joist extending direction is consistent with tunnel longitudinal direction.
5. tunnel in cold regions heat insulating construction method according to claim 4, it is characterised in that：The step S25 is specific
Include the following steps：
Step S251：Fire-proof plate is fixed on the keel shoe that U-shaped lightgage steel joist is formed；
Step S252：By the gap sealing between fire-proof plate.
6. tunnel in cold regions heat insulating construction method according to claim 5, it is characterised in that：The step S6 include with
Lower step：
Step S261：It sprays for the first time；Base is sprayed using flush coater, is carried out from tunnel waist to top；
Step S262：After the first spraying parches, carries out second and spray；The time interval of spraying and second of spraying for the first time
At least 24 hours；
Step S263：Manual grinding, finishing.
7. tunnel in cold regions heat insulating construction method according to claim 6, it is characterised in that：The step S27 is specific
Include the following steps：
Step S271：In cable trough the plug-in thermal insulation board of expansion bolt is used close to the side of secondary lining；
Step S272：After the completion of step S271, the plug-in steel wire of thermal insulation board, and smear fire-proof cement mortar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810887251.4A CN108798728A (en) | 2018-08-06 | 2018-08-06 | Tunnel in cold regions heat insulating construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810887251.4A CN108798728A (en) | 2018-08-06 | 2018-08-06 | Tunnel in cold regions heat insulating construction method |
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| Publication Number | Publication Date |
|---|---|
| CN108798728A true CN108798728A (en) | 2018-11-13 |
Family
ID=64079340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810887251.4A Pending CN108798728A (en) | 2018-08-06 | 2018-08-06 | Tunnel in cold regions heat insulating construction method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101638990A (en) * | 2009-08-28 | 2010-02-03 | 长沙威特消防新材料科技有限公司 | Fireproof thermal-insulation layer of tunnel and construction method thereof |
| 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 |
| CN206028014U (en) * | 2016-09-12 | 2017-03-22 | 重庆交通大学 | A equipment for being directed at tunnel lateral wall carries out spraying |
| CN107587881A (en) * | 2017-10-30 | 2018-01-16 | 中铁五局集团第五工程有限责任公司 | A kind of composite lining structure and construction technology for permafrost tunnel |
| CN207419739U (en) * | 2018-02-06 | 2018-05-29 | 河北诺华宇诚节能科技有限公司 | A kind of New compound heated board |
-
2018
- 2018-08-06 CN CN201810887251.4A patent/CN108798728A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101638990A (en) * | 2009-08-28 | 2010-02-03 | 长沙威特消防新材料科技有限公司 | Fireproof thermal-insulation layer of tunnel and construction method thereof |
| 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 |
| CN206028014U (en) * | 2016-09-12 | 2017-03-22 | 重庆交通大学 | A equipment for being directed at tunnel lateral wall carries out spraying |
| CN107587881A (en) * | 2017-10-30 | 2018-01-16 | 中铁五局集团第五工程有限责任公司 | A kind of composite lining structure and construction technology for permafrost tunnel |
| CN207419739U (en) * | 2018-02-06 | 2018-05-29 | 河北诺华宇诚节能科技有限公司 | A kind of New compound heated board |
Non-Patent Citations (2)
| Title |
|---|
| 中国公路学会隧道工程分会 青海省交通厅 遍: "《2012年高寒地区公路隧道建设技术研讨会论文集》", 31 August 2012, 重庆大学出版社 * |
| 建设部工程质量安全监督与行业发展司: "《土木建筑国家级工法汇编 2003-2004年度》", 31 January 2007, 中国计划出版社 * |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181113 |
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| RJ01 | Rejection of invention patent application after publication |