CN204691783U - Supporting and protection structure under a kind of extra-high rock temperature tunnel complex geological condition - Google Patents
Supporting and protection structure under a kind of extra-high rock temperature tunnel complex geological condition Download PDFInfo
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- CN204691783U CN204691783U CN201520301023.6U CN201520301023U CN204691783U CN 204691783 U CN204691783 U CN 204691783U CN 201520301023 U CN201520301023 U CN 201520301023U CN 204691783 U CN204691783 U CN 204691783U
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- preliminary bracing
- country rock
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Abstract
The utility model relates to the supporting and protection structure under a kind of extra-high rock temperature tunnel complex geological condition.Reduce the impact on construction environment in tunnel and operating environment of high temperature country rock to greatest extent, need to isolate relative with tunnel environment for high temperature country rock.The utility model arranges preliminary bracing structure along in tunnel hoop country rock; Hard polyaminoester isolation layer is set inside preliminary bracing structure; Inside hard polyaminoester isolation layer, waterproofing course is set; Inside waterproofing course, secondary liner structure is set; Closely connected in preliminary bracing structure outside hard polyaminoester isolation layer, inner side is smooth; Supporting and protection structure is elongated setting along tunnel.The utility model can by outside high temperature country rock and inner side preliminary bracing structure, waterproofing course, secondary liner structure and construction environment be relative isolates, reduce preliminary bracing sprayed mortar in the temperature difference of the inner side temperature and concrete itself of building period and waterproofing course operating temperature, the molding temperature reducing secondary lining is poor, and reduces the impact of high temperature country rock on tunnel environment temperature.
Description
Technical field
the utility model belongs to traffic engineering technical field, is specifically related to the supporting and protection structure under a kind of extra-high rock temperature tunnel complex geological condition.
Background technology
At geothermal activity band, if Tibet Nimu is to Canyon Area, the Yarlung Zangbo River, Renbu County, belongs to and hide southern high temperature hydro-thermal activity area, the south of Nagqu-Damxung (Yangbajing)-Nimu hydrothermal activity band, its core space not only water temperature is high, has a very wide distribution, and geothermic gradient is large.Day railway wide-angle is drawn to penetrate famous Nagqu-Damxung (Yangbajing)-Nimu hydrothermal activity band core space 40km, influence area 18km, heat evil is very serious, and due to this area's geological activity violent, define a series of nappe structure and thrust.In order to ensure comfortableness during the safe construction in tunnel and construction quality and operation and safety, reducing the impact of high temperature country rock on construction environment in tunnel and operating environment to greatest extent, needing to isolate relative with tunnel environment for high temperature country rock.Traditional tunnel support structure system does not possess heat insulating function, very easily causes the concrete molding temperature of secondary lining too high, reduces concrete later strength and durability; Endurance quality and the thermal stresses of deterioration waterproofing course cause the series of problems such as secondary lining cracking, the potential safety hazard during causing tunnel to run.
Summary of the invention
The purpose of this utility model is to provide the supporting and protection structure under a kind of extra-high rock temperature tunnel complex geological condition, is applicable to the relative isolation of country rock and tunnel environment temperature under extra-high rock temperature tunnel complex geological condition.
The technical scheme that the utility model adopts is:
A supporting and protection structure under extra-high rock temperature tunnel complex geological condition, is characterized in that:
Along in tunnel hoop country rock, preliminary bracing structure is set;
Hard polyaminoester isolation layer is set inside preliminary bracing structure;
Inside hard polyaminoester isolation layer, waterproofing course is set;
Inside waterproofing course, secondary liner structure is set.
Closely connected in preliminary bracing structure outside hard polyaminoester isolation layer, inner side is smooth.
Described supporting and protection structure is elongated setting along tunnel.
The utility model has the following advantages:
The utility model good heat-insulation effect, construction method is simple, good endurance, strong adaptability, can isolate relative with inner side waterproofing course, secondary liner structure and construction environment for outside high temperature country rock, reduce the operating temperature of waterproofing course, the molding temperature reducing secondary lining is poor, and reduces the impact of high temperature country rock on construction environment temperature in tunnel.By numerical simulation analysis, when country rock temperature is 50 DEG C, inside preliminary bracing, temperature is 36.04 DEG C; When country rock temperature is 60 DEG C, inside preliminary bracing, temperature is 39.69 DEG C; When country rock temperature is 70 DEG C, inside preliminary bracing, temperature is 43.35 DEG C.
Accompanying drawing explanation
Fig. 1 is the utility model cross section.
Fig. 2 is the utility model sectional drawing.
In figure, 1-country rock, 2-preliminary bracing structure, 3-hard polyaminoester isolation layer, 4-waterproofing course, 5-secondary liner structure.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the utility model is described in detail.
Supporting and protection structure under a kind of extra-high rock temperature tunnel complex geological condition that the utility model relates to, the elongated setting along tunnel, concrete structure is: arrange preliminary bracing structure 2 along in tunnel hoop country rock 1, based on profile steel frame, cover sprayed mortar, because profile steel frame is to the insensitivity of temperature, do not affect its structure stress, can, with the complexity adjustment steelframe model, spacing, deformation allowance etc. of country rock, preliminary bracing be made to meet structure stress requirement; Arrange hard polyaminoester isolation layer 3 inside preliminary bracing structure 2, on-the-spot painting spray machine is coated with spray and completes; Waterproofing course 4 is set inside hard polyaminoester isolation layer 3; Secondary liner structure 5 is set inside waterproofing course 4.Closely connected in preliminary bracing structure 2 outside hard polyaminoester isolation layer 3, inner side is smooth.Hard polyaminoester isolation layer 3 is by relative with waterproofing course 4, secondary liner structure 5 and tunnel environment for high temperature country rock effect of isolating, reduce the concrete temperature outside of secondary lining, the operating temperature of waterproofing course and minimizing country rock are to the thermal release of tunnel environment.Reach the object improving construction environment, solve the potential safety hazard of Tunnel Second Lining later strength and the operation stage such as durability and waterproofing course durability.
Content of the present utility model is not limited to cited by embodiment, and the conversion of those of ordinary skill in the art by reading the utility model manual to any equivalence that technical solutions of the utility model are taked, is claim of the present utility model and contains.
Claims (3)
1. the supporting and protection structure under extra-high rock temperature tunnel complex geological condition, is characterized in that:
Along in tunnel hoop country rock (1), preliminary bracing structure (2) is set;
Preliminary bracing structure (2) inner side arranges hard polyaminoester isolation layer (3);
Hard polyaminoester isolation layer (3) inner side arranges waterproofing course (4);
Waterproofing course (4) inner side arranges secondary liner structure (5).
2. the supporting and protection structure under a kind of extra-high rock temperature tunnel according to claim 1 complex geological condition, is characterized in that:
Hard polyaminoester isolation layer (3) outside is closely connected in preliminary bracing structure (2), and inner side is smooth.
3. the supporting and protection structure under a kind of extra-high rock temperature tunnel according to claim 2 complex geological condition, is characterized in that:
Described supporting and protection structure is elongated setting along tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520301023.6U CN204691783U (en) | 2015-05-12 | 2015-05-12 | Supporting and protection structure under a kind of extra-high rock temperature tunnel complex geological condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520301023.6U CN204691783U (en) | 2015-05-12 | 2015-05-12 | Supporting and protection structure under a kind of extra-high rock temperature tunnel complex geological condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204691783U true CN204691783U (en) | 2015-10-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201520301023.6U Active CN204691783U (en) | 2015-05-12 | 2015-05-12 | Supporting and protection structure under a kind of extra-high rock temperature tunnel complex geological condition |
Country Status (1)
| Country | Link |
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| CN (1) | CN204691783U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239599A (en) * | 2015-10-24 | 2016-01-13 | 陈培军 | Steel-structure-polyurethane-material underground pipe gallery or working well |
| CN108301852A (en) * | 2018-04-09 | 2018-07-20 | 铁科创恒新材料科技有限公司 | A kind of self-adhering type insulation spill guide and its paving hanging method |
| CN108561162A (en) * | 2018-03-16 | 2018-09-21 | 西南交通大学 | A kind of superelevation ground temperature tunnel support structure and construction method |
| CN109184775A (en) * | 2018-09-29 | 2019-01-11 | 中国水利水电第四工程局有限公司 | A kind of high-temperature geothermal tunnel support construction method |
| CN111561332A (en) * | 2020-04-25 | 2020-08-21 | 中山大学 | Construction method of mountain tunnel shock-insulation waterproof heat-insulation high polymer |
-
2015
- 2015-05-12 CN CN201520301023.6U patent/CN204691783U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239599A (en) * | 2015-10-24 | 2016-01-13 | 陈培军 | Steel-structure-polyurethane-material underground pipe gallery or working well |
| CN108561162A (en) * | 2018-03-16 | 2018-09-21 | 西南交通大学 | A kind of superelevation ground temperature tunnel support structure and construction method |
| CN108301852A (en) * | 2018-04-09 | 2018-07-20 | 铁科创恒新材料科技有限公司 | A kind of self-adhering type insulation spill guide and its paving hanging method |
| CN109184775A (en) * | 2018-09-29 | 2019-01-11 | 中国水利水电第四工程局有限公司 | A kind of high-temperature geothermal tunnel support construction method |
| CN111561332A (en) * | 2020-04-25 | 2020-08-21 | 中山大学 | Construction method of mountain tunnel shock-insulation waterproof heat-insulation high polymer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |