CN2679247Y - Heat isolating and temp lowering appts. for protecting for frozen earth - Google Patents
Heat isolating and temp lowering appts. for protecting for frozen earth Download PDFInfo
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- CN2679247Y CN2679247Y CN 200420041458 CN200420041458U CN2679247Y CN 2679247 Y CN2679247 Y CN 2679247Y CN 200420041458 CN200420041458 CN 200420041458 CN 200420041458 U CN200420041458 U CN 200420041458U CN 2679247 Y CN2679247 Y CN 2679247Y
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- permafrost
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Abstract
The utility model relates to a heat isolating and temperature lowering aggregate unit for effectively protecting the stability of the permafrost under the lower part of the civil engineering structure and used in the civil engineering structure on permafrost area. The structure of the utility model is that an air chimney is perpendicular to the foundation trend and is buried in a certain deep position of the earth bank. An automatic temperature control ventilating device is arranged on one end of the air chimney and heat-insulating materials are arranged between the air foundation and the air chimney or up the whole air chimney. Via the automatic control of the temperature control system for the inner earth body of the foundation, the inner earth body of the foundation exchanges heat only with the exterior low-temperature airflow. The heat-insulating materials arranged between the air chimneys or up the air chimney can interclude the external heat intrusion and hold the lower cold energy. Thereby, the heat budget balance of the permafrost is sustained, the stability of the permafrost is ensured and the engineering stability influenced by the frost heave and the thaw collapse in the cycle of freezing and thawing in the season active layer is effectively avoided. Making use of the combination of the natural cold energy clew, the new mechanical control measure has the advantages of outstanding potency, obvious temperature lowering effect, feasible engineering construction, relatively cheap manufacturing cost and wide application environment etc.
Description
Technical field
The utility model relates to and a kind ofly carrying out in the engineering construction in Permafrost Area, protects the heat insulation and heat control composite set of engineering construction bottom (referring in particular to railway bed or highway subgrade) ever-frozen ground stability effectively.
Background technology
China is frozen soil big country, and ever-frozen ground district and seasonal frozen ground district account for 70% of area.Because weather, changes of environment, this regional natural ecological environment, ever-frozen ground environment all are under balance and the nonequilibrium rim condition, have brought up to can be described as fragile cold environment.The variation of frozen soil environment is very easily brought out in mankind's activity, and the variation that engineering construction more makes this fragile cold environment produce is particularly violent.The Qinghai-Tibet Railway of China's construction at present passes through more than 600 kilometer ever-frozen ground district, and spot temperature rise, subgrade settlement, metaboly are bound to.In order to ensure workmanship; the long-term stability of roadbed; the safe operation of train; the trend of reply global warming; the scientific worker is around Qinghai-Tibet Railway country Important Project project; consult Russian frozen soil scientist buries air chimney underground the bottom of banketing perpendicular to road-trend experimental study (J FNixon.Geothermal aspects of ventilated pad design.Proceedings of the ThirdInternational Conference on Permafrost.1978; Edmonton; Alberta; Canada:841-846); and Sheng illuminate; Zhang Luxin; Yang Chengsong etc. are at " application of insulation treatment measures in ever-frozen ground district highway construction " (dirt band; 2002; 24 (5): 618-622) engineering measure of record protection ever-frozen ground is the report that overlays one deck heat insulating material in roadbed; in conjunction with the reality of Qinghai-Tibet ever-frozen ground, to the measure of protection frozen soil; the method of cooling ground has been carried out positive exploration.What change was used always on permafrost region roadbed, basis etc. in the past is the passiveness protection frozen soil principle of means with the increase thermal resistance, and having formulated with " cooling roadbed " is the active protection frozen soil principle of means.The project of national nature science fund project of application, the major project " qinghai-tibet railway engineering and ever-frozen ground interact and environmental effect " of Chinese Academy of Sciences's " light in western part---protection frozen soil temperature control key technology research in the frozen soil engineering ", Chinese Academy of Sciences's knowledge innovation project is exactly the case study of carrying out at the problems referred to above." automatic temperature-controlled ventilation installation " and " the automatic temperature-controlled ventilation installation of fluid pressure type " patent application (patent No. 03114640.6,03114641.4) have been finished under study for action.
Summary of the invention
The purpose of this utility model provides a kind of protection frozen soil heat insulation and heat control device based on above-mentioned thinking and the research work of carrying out.By the thermostat of combining structure, the inner soil body of control roadbed only carries out exchange heat with the low-temperature airflow in the external world, is arranged between the air chimney of vertical road-trend or the heat insulating material on top can intercept external heat and invades.Preserve the cold energy of roadbed bottom according to this effectively, the heat balance of keeping ever-frozen ground is with stable.
The purpose of this utility model can reach by the following technical programs
A kind of protection frozen soil heat insulation and heat control device is made up of automatic temperature-controlled ventilation installation, air chimney, heat insulating material.Air chimney is perpendicular to road-trend and be embedded in the position of embankment filled soil certain depth, and automatic temperature-controlled ventilation installation is installed in its end, and heat insulating material is arranged between the ventilated embankment air chimney or the top of whole air chimney.
So-called heat insulating material is at least a kind of in polystyrene (EPS), polyurethane (PU), foam glass, the injection moulding polystyrene (XPS).
Advantage of the present utility model and effective effect are
1, is installed in the automatic temperature-controlled ventilation installation of air chimney end, have and allow flowing of relative low-temperature airflow, and the function that stops high temperature gas flow to flow, promptly when ambient air temperature is lower than 0 ℃, open air door automatically, carry out the convection heat transfer' heat-transfer by convection of internal work and extraneous air-flow by air chimney, when ambient air temperature is higher than 0 ℃ season, self-closing damper stops the exchange heat of embankment and the basic internal soil body and air-flow, stops importing into of heat, thus the stability of the frozen soil of protection roadbed bottom;
2, between air chimney or whole top lay one deck heat insulating material.From the cooling usefulness of whole roadbed bottom, the automatic control ventilated embankment relative ventilated embankment of lowering the temperature has obtained very big improvement.Because solar radiation, the coefficient of thermal conductivity of embankment filled soil is higher relatively, still has comparatively strong hot-fluid its usefulness to be produced a very large impact by the soil body between the air chimney to the conduction of bottom ever-frozen ground.The utility model passes through between air chimney, or lays heat insulating material on the top of air chimney, overcomes emitting of low-temperature heat quantity, and the conduction of heat of high temperature just can be subdued this conduction of heat widely, improves whole cooling usefulness;
3, the utility model is with the combination of automatic temperature-controlled ventilated embankment and heat insulating material, make full use of both outstanding advantages, by employing, storage to the nature cold energy, reach maximum cooling-down effect to roadbed, solve the conspicuous contradiction between fragile cold district's frozen soil and the human engineering activity effectively, satisfied the special requirement of engineering construction at high temperature, hight-ice-content permafrost zone engineering stability;
4, by to the calculating of roadbed internal heat flows amount, and be located at the test of the heat insulating material between the air chimney, can reduce the heat about 80% that enters the bottom soil body by the air chimney plane.By test relatively, the influence of comprehensive other factors, the compound temperature control roadbed that this device is housed in the cycle, improves about 3-4 times of cooling usefulness the complete cycle in 1 year than air chimney roadbed;
5, because the enforcement of the utility model in qinghai-tibet railway engineering, make the continuous accumulation of cold energy in the engineering construction basis, ever-frozen ground can maintain in lower, the stable thermal field, effectively avoid the ground temperature intensification phenomenon after common engineering measure is implemented, and the subgrade settlement that causes thus distortion, the engineering stability on basis is based upon on the higher level.Simultaneously because the raising of the artificial ever-frozen ground upper limit, avoided the influence of frost heave that the freeze thawing circulation of seasonal active layer brought, thaw collapse to engineering stability;
6, saving aspect the construction investment, engineering cost of the present utility model is about the 1/2-1/3 of jackstone roadbed, and with the input and output of the engineering measure of Qinghai-Tibet Highway hot pin test section, the performance of compound temperature control roadbed and cost will be apparently higher than other engineering measures;
7, aspect range of application, because storage cold-working mechanism, except high ice content ever-frozen ground district, at the high temperature ever-frozen ground, the higher regional the technical solution of the utility model of environment temperature such as island ever-frozen ground all can be used.
Description of drawings
Fig. 1 is that the utility model heat insulating material is arranged on the schematic diagram between the air chimney roadbed air chimney
Fig. 2 is the utility model sectional schematic diagram
Fig. 3 is the automatic temperature-controlled ventilation installation schematic diagram of the utility model
The specific embodiment
Below, in conjunction with the accompanying drawings, will be described in further detail again the utility model
When outside air temperature was lower than 0 ℃, the air door 4 of automatic temperature-controlled ventilation installation 1 opened automatically, and the heat release that impels the embankment and the basic internal soil body to produce is carried out convective exchange by air chimney 2 and cool ambient air; When outside air temperature was higher than 0 ℃, the air door 4 automatic make and breaks of automatic temperature-controlled ventilation installation 1 stoped importing into of external heat.
Combination by automatic temperature-controlled ventilated embankment and polystyrene (EPS) plate, overcome emitting of low-temperature heat quantity, the conduction of heat of high temperature realizes employing, storage to cold energy, guarantee the stability of ever-frozen ground, satisfied the Qinghai-Tibet Railway technical requirements that capital construction establishes of satisfying the need.
Embodiment 2, and polyurethane (PO) plate is laid between the air chimney 2, and its heat-insulating cooling effect is identical with embodiment 1.
Claims (2)
1, a kind of protection frozen soil heat insulation and heat control device; form by automatic temperature-controlled ventilation installation (1), air chimney (2), heat insulating material (3); it is characterized in that air chimney (2) is perpendicular to road-trend and be embedded in the position of embankment filled soil certain depth; automatic temperature-controlled ventilation installation (1) is installed in its end, and heat insulating material (3) is arranged between the ventilated embankment air chimney (2)/or the top of whole air chimney (2).
2, a kind of protection frozen soil heat insulation and heat control device according to claim 1 is characterized in that described heat insulating material (3) is at least a kind of in polystyrene (EPS), polyurethane (PU), foam glass, the injection moulding polystyrene (XPS).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420041458 CN2679247Y (en) | 2004-01-08 | 2004-01-08 | Heat isolating and temp lowering appts. for protecting for frozen earth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420041458 CN2679247Y (en) | 2004-01-08 | 2004-01-08 | Heat isolating and temp lowering appts. for protecting for frozen earth |
Publications (1)
| Publication Number | Publication Date |
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| CN2679247Y true CN2679247Y (en) | 2005-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200420041458 Expired - Fee Related CN2679247Y (en) | 2004-01-08 | 2004-01-08 | Heat isolating and temp lowering appts. for protecting for frozen earth |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357520C (en) * | 2005-08-12 | 2007-12-26 | 中国科学院寒区旱区环境与工程研究所 | U-type cold energy gathering roadbed utilizing natural cold erergy |
| CN100357521C (en) * | 2005-08-23 | 2007-12-26 | 中国科学院寒区旱区环境与工程研究所 | Composite ventilating and cold energy gathering roadbed |
| CN100385078C (en) * | 2005-07-09 | 2008-04-30 | 中国科学院寒区旱区环境与工程研究所 | Use of concrete hollow block for regulating ever-frozen roadbed temperature |
| CN100446048C (en) * | 2006-11-22 | 2008-12-24 | 中交第一公路勘察设计研究院 | Method and system for testing working state of heat rod |
| CN102733405A (en) * | 2012-02-24 | 2012-10-17 | 中国科学院寒区旱区环境与工程研究所 | Method for reducing temperature of frozen earth and preventing water catchment in pit for permafrost region |
| CN102817380A (en) * | 2012-02-20 | 2012-12-12 | 中国科学院寒区旱区环境与工程研究所 | Measure for enhancing electric transmission line tower footing frozen soil foundation stability |
| CN103938658A (en) * | 2014-04-04 | 2014-07-23 | 同济大学 | Structure capable of avoiding cold damage to high-temperature and unstable freeze soil area tunnel portal side slope |
| CN104480822A (en) * | 2014-12-12 | 2015-04-01 | 中交第一公路勘察设计研究院有限公司 | Mandatory diffuse type cooling ventilating pipeline system for large-scale frozen earth roadbed and construction method thereof |
| CN105088913A (en) * | 2015-09-10 | 2015-11-25 | 东南大学 | Subgrade structure in permafrost region |
| CN106195510A (en) * | 2015-11-22 | 2016-12-07 | 荣海伦 | A kind of forced ventilation solves the method for buried pipeline frost heave |
| CN108118571A (en) * | 2018-01-26 | 2018-06-05 | 四川农业大学 | Suitable for the direct drawing-in type active aeration-cooling device of subgrade in permafrost soil zone |
| CN108118572A (en) * | 2018-01-26 | 2018-06-05 | 四川农业大学 | Suitable for the piston type active aeration-cooling device of subgrade in permafrost soil zone |
| CN110004911A (en) * | 2019-03-29 | 2019-07-12 | 中国科学院寒区旱区环境与工程研究所 | Protect the cold mattress system and its construction method of embedded object in a kind of Permafrost Area |
| CN110565466A (en) * | 2019-09-17 | 2019-12-13 | 青海省交通科学研究院 | Cooling structure of freeway roadbed slope in permafrost region |
| CN110630172A (en) * | 2018-06-21 | 2019-12-31 | 中国石油化工股份有限公司 | Frozen soil layer drilling heat-resistant anti-melting device |
| CN114561932A (en) * | 2022-03-23 | 2022-05-31 | 西安建筑科技大学 | Temperature control equipment for frozen soil foundation |
-
2004
- 2004-01-08 CN CN 200420041458 patent/CN2679247Y/en not_active Expired - Fee Related
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100385078C (en) * | 2005-07-09 | 2008-04-30 | 中国科学院寒区旱区环境与工程研究所 | Use of concrete hollow block for regulating ever-frozen roadbed temperature |
| CN100357520C (en) * | 2005-08-12 | 2007-12-26 | 中国科学院寒区旱区环境与工程研究所 | U-type cold energy gathering roadbed utilizing natural cold erergy |
| CN100357521C (en) * | 2005-08-23 | 2007-12-26 | 中国科学院寒区旱区环境与工程研究所 | Composite ventilating and cold energy gathering roadbed |
| CN100446048C (en) * | 2006-11-22 | 2008-12-24 | 中交第一公路勘察设计研究院 | Method and system for testing working state of heat rod |
| CN102817380A (en) * | 2012-02-20 | 2012-12-12 | 中国科学院寒区旱区环境与工程研究所 | Measure for enhancing electric transmission line tower footing frozen soil foundation stability |
| CN102817380B (en) * | 2012-02-20 | 2015-03-11 | 中国科学院寒区旱区环境与工程研究所 | Measure for enhancing electric transmission line tower footing frozen soil foundation stability |
| CN102733405A (en) * | 2012-02-24 | 2012-10-17 | 中国科学院寒区旱区环境与工程研究所 | Method for reducing temperature of frozen earth and preventing water catchment in pit for permafrost region |
| CN102733405B (en) * | 2012-02-24 | 2015-09-02 | 中国科学院寒区旱区环境与工程研究所 | A kind of Permafrost Area is for reducing frozen soils temperature and the method stoped to charge for remittance in foundation ditch |
| CN103938658A (en) * | 2014-04-04 | 2014-07-23 | 同济大学 | Structure capable of avoiding cold damage to high-temperature and unstable freeze soil area tunnel portal side slope |
| CN104480822B (en) * | 2014-12-12 | 2016-07-06 | 中交第一公路勘察设计研究院有限公司 | Large scale frozen earth roadbed pressure disperse formula cooling duct system and construction method |
| CN104480822A (en) * | 2014-12-12 | 2015-04-01 | 中交第一公路勘察设计研究院有限公司 | Mandatory diffuse type cooling ventilating pipeline system for large-scale frozen earth roadbed and construction method thereof |
| CN105088913A (en) * | 2015-09-10 | 2015-11-25 | 东南大学 | Subgrade structure in permafrost region |
| CN106195510A (en) * | 2015-11-22 | 2016-12-07 | 荣海伦 | A kind of forced ventilation solves the method for buried pipeline frost heave |
| CN108118571A (en) * | 2018-01-26 | 2018-06-05 | 四川农业大学 | Suitable for the direct drawing-in type active aeration-cooling device of subgrade in permafrost soil zone |
| CN108118572A (en) * | 2018-01-26 | 2018-06-05 | 四川农业大学 | Suitable for the piston type active aeration-cooling device of subgrade in permafrost soil zone |
| CN108118572B (en) * | 2018-01-26 | 2023-11-03 | 四川农业大学 | Piston type active aeration cooling device suitable for permafrost roadbed |
| CN110630172A (en) * | 2018-06-21 | 2019-12-31 | 中国石油化工股份有限公司 | Frozen soil layer drilling heat-resistant anti-melting device |
| CN110004911A (en) * | 2019-03-29 | 2019-07-12 | 中国科学院寒区旱区环境与工程研究所 | Protect the cold mattress system and its construction method of embedded object in a kind of Permafrost Area |
| CN110004911B (en) * | 2019-03-29 | 2024-02-13 | 中国科学院西北生态环境资源研究院 | Cold pad system for protecting buried object in permafrost region and construction method thereof |
| CN110565466A (en) * | 2019-09-17 | 2019-12-13 | 青海省交通科学研究院 | Cooling structure of freeway roadbed slope in permafrost region |
| CN110565466B (en) * | 2019-09-17 | 2021-05-14 | 青海大学 | Cooling structure of freeway roadbed slope in permafrost region |
| CN114561932A (en) * | 2022-03-23 | 2022-05-31 | 西安建筑科技大学 | Temperature control equipment for frozen soil foundation |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050216 |