CN114837233A - High and cold area fan basis secondary grouting winter construction regularization heat preservation greenhouse - Google Patents
High and cold area fan basis secondary grouting winter construction regularization heat preservation greenhouse Download PDFInfo
- Publication number
- CN114837233A CN114837233A CN202210318783.2A CN202210318783A CN114837233A CN 114837233 A CN114837233 A CN 114837233A CN 202210318783 A CN202210318783 A CN 202210318783A CN 114837233 A CN114837233 A CN 114837233A
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- yurt
- secondary grouting
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- heat preservation
- cold area
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- 238000010276 construction Methods 0.000 title claims abstract description 45
- 238000004321 preservation Methods 0.000 title claims abstract description 25
- 238000012544 monitoring process Methods 0.000 claims description 15
- 238000012806 monitoring device Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000004513 sizing Methods 0.000 claims 9
- 238000000034 method Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 9
- 238000013461 design Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 6
- 239000003245 coal Substances 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000011440 grout Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000013039 cover film Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/0254—Hardening in an enclosed space, e.g. in a flexible container
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
- E02D27/425—Foundations for poles, masts or chimneys specially adapted for wind motors masts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H1/00—Buildings or groups of buildings for dwelling or office purposes; General layout, e.g. modular co-ordination or staggered storeys
- E04H1/12—Small buildings or other erections for limited occupation, erected in the open air or arranged in buildings, e.g. kiosks, waiting shelters for bus stops or for filling stations, roofs for railway platforms, watchmen's huts or dressing cubicles
- E04H1/1205—Small buildings erected in the open air
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H15/00—Tents or canopies, in general
- E04H15/02—Tents combined or specially associated with other devices
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H15/00—Tents or canopies, in general
- E04H15/02—Tents combined or specially associated with other devices
- E04H15/10—Heating, lighting or ventilating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
- F03D13/22—Foundations specially adapted for wind motors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
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- Environmental & Geological Engineering (AREA)
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- Greenhouses (AREA)
Abstract
The invention discloses a wind turbine foundation secondary grouting winter construction shaped heat preservation greenhouse in a severe cold area, and mainly relates to the field of wind power station foundation winter construction; the system comprises a Mongolian yurt main body, wherein the Mongolian yurt main body is erected around a fan foundation table column and covers the fan foundation table column before secondary grouting layer construction of a fan foundation to form a relatively closed construction operation space, and a combustion-controllable gas furnace is arranged in the Mongolian yurt main body; the method can more stably provide good conditions for winter construction of secondary grouting, box transformer foundations and settlement observation datum points and other field small foundations, better saves resources, particularly manpower input, and effectively ensures construction quality.
Description
Technical Field
The invention relates to the field of winter construction of wind power station foundations, in particular to a secondary grouting winter construction shaped heat-preservation greenhouse for a fan foundation in a severe cold region.
Background
The secondary grouting material is a key project for wind power project construction, generally adopts a material with higher strength and an early strength lifting block, but the secondary grouting material is extremely small in size and is easily influenced by the surrounding environment, particularly the ambient temperature, so that the winter construction quality of the secondary grouting needs to be ensured by strict measures.
The secondary grouting point of the wind turbine foundation is multiple and wide, a single foundation grouting area is small, the diameter of a bottom tower barrel of a 140m wind turbine higher in the existing land wind power plant is generally within 5m, and the secondary grouting area is generally a circular area within 5 m.
Traditional secondary grouting, box become small-size basis winter construction such as generally adopt the scaffold pipe to set up fixed warm canopy, go up plastic film and inside coal stove or the electric heating facility of setting up, grout material upper portion covers cotton felt moisturizing, heat preservation maintenance, often has following problem when using:
1) heavy scaffold pipe frameworks need to be frequently disassembled and assembled, a structural system formed by straight steel pipes of the scaffold is single in stress, the characteristics of lightness and convenience of metal materials after optimized design cannot be exerted, and the investment of labor force and tools is large;
2) coal stove is mainly adopted for heating, the greenhouse needs to form a relatively closed space, and the emission of the smoke of the coal stove is in conflict with the closed space of the greenhouse. In the field environment, if electric heating is adopted, a generator is required to continuously generate electricity, the cost is high, and large reactive power waste exists.
3) Mainly adopt plastic film canopy clothing, it is relatively poor to keep warm the effect, need incessant heat supply just can maintain the inside temperature of greenhouse, is unfavorable for energy-conservation.
Disclosure of Invention
The invention aims to solve the problems in the prior art, provides a secondary grouting winter construction shaped heat-insulation greenhouse for a fan foundation in a severe cold region, avoids the uncertainty and nonstandard design quality of the traditional heat-insulation greenhouse, can more stably provide good conditions for winter construction of secondary grouting, box-to-box foundations and other field small foundations of settlement observation reference points, better saves resources, particularly manpower input, and effectively ensures the construction quality.
In order to achieve the purpose, the invention is realized by the following technical scheme:
the utility model provides a high and cold area fan basis secondary grouting winter construction regularization heat preservation greenhouse, includes the yurt main part, the yurt main part encloses around fan basis styletable before fan basis secondary grouting layer construction and covers fan basis styletable, forms relative confined construction operation space, be equipped with the controllable gas furnace of burning in the yurt main part.
Preferably, a wireless monitoring device is arranged in the yurt main body.
Preferably, the top of the yurt main body is provided with a solar panel for supplying power to the wireless monitoring equipment.
Preferably, a thermometer is arranged in the yurt main body.
Preferably, the lighting window and the skylight of the yurt main body are both windows with heat-insulating rolling curtains, and the heat-insulating rolling curtains are arranged on the outer sides of the yurt main body.
Preferably, lighting equipment is arranged in the yurt main body.
Preferably, a certain distance is reserved between the inner wall of the Mongolian yurt main body and the outer wall of the fan foundation column.
Preferably, a production facility is arranged in the yurt main body.
Preferably, fire-fighting facilities are arranged in the Mongolian yurt main body.
Preferably, an external monitoring device is arranged on the outer side of the yurt main body.
Compared with the prior art, the invention has the beneficial effects that:
1. the household yurt is commonly used in nomadic life in grassland areas, is flexible to carry, has reasonable structural design, perfect anticorrosive and antirust treatment and deeper light design, and is used for replacing the traditional greenhouse, so that the problems of large labor input, large tool input and the like when the framework of the traditional greenhouse is erected are solved from heat preservation measures;
2. the shed surface of the Mongolian yurt used in winter adopts customized standardized products, the heat preservation effect is far superior to that of the traditional shed surface material, the unification of simplicity, convenience and rapidness and good performance can be realized, and the creation of construction quality guarantee environment in winter is more facilitated;
3. the secondary grouting area of the fan foundation is an annular area with the diameter within 5 meters, the sizes of other foundations such as a box transformer substation, a settlement observation datum point and the like are small, and the size and the shape of the Mongolian yurt are good, so that an independent environment space for the secondary grouting and small foundation construction stage and maintenance stage is provided;
4. the gas furnace is adopted to replace the original coal furnace or electric furnace for heating, the characteristics of small gas pollution, high controllability and convenient movement are fully exerted, and the problems in the background technology are solved from the heat source;
5. by arranging the wireless monitoring equipment, the real-time monitoring and real-time sharing of the field condition can be realized, and the real-time control of various levels of management personnel such as supervision, owners and the like on the field can be realized.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a flow chart of construction to which the present invention is applied.
Reference numerals shown in the drawings: 1. a yurt body; 2. secondary grouting layer of the fan foundation; 3. a fan foundation pillar; 4. a gas furnace; 41. a gas tank; 5. a wireless monitoring device; 6. a solar panel; 7. a thermometer; 8. a lighting window; 9. a skylight; 10. an external monitoring device; 11. a blender; 12. a platform scale; 13. stirring water; 14. a fire extinguisher.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present application.
The embodiment is as follows: as shown in the attached drawing 1, the invention relates to a setting heat preservation greenhouse for fan foundation secondary grouting in winter construction in alpine regions, which comprises a yurt main body 1, wherein a family yurt which is commonly used in nomadic life in grassland regions, is flexible to carry, reasonable in structural design, perfect in anticorrosive and antirust treatment and deep in light design is adopted to replace the traditional greenhouse, and the problems of large labor input, large tool input and the like when a framework of the traditional greenhouse is erected are solved from the heat preservation measure. The yurt body 1 is composed of quick-release and portable components, and can be conveniently transferred among machine position foundations of a wind farm. In addition, the shed surface of the Mongolian yurt used in winter adopts customized standardized products, the heat preservation effect is far superior to that of the traditional shed surface material, the unification of simplicity, convenience and rapidness and good performance is realized, and the creation of construction quality guarantee environment in winter is more facilitated. Mongolian yurt main part 1 sets up around fan basis styletable 3 and covers fan basis styletable 3 before fan basis secondary grouting layer 2 construction, forms relative confined construction operation space, and fan basis secondary grouting area is mostly the annular region within 5 meters of diameter, and all the other basis sizes such as case becomes, subsides observation reference point are also all less, and the size of Mongolian yurt, the equal fine independent environment space who provides secondary grouting and small-size basis construction stage, maintenance stage of shape. The utility model discloses a light, convenient and fast yurt is characterized in that be equipped with controllable gas furnace 4 of burning in yurt main part 1, gas furnace 4 is connected with gas jar 41, and gas furnace 4 can adopt the liquefied gas heating stove that outdoor ice fishing fan in northeast region commonly used to replace original coal stove or electric stove heating, and the low, the controllability of full play gas pollution is high, the convenient characteristic of removal, solves the problem that current heat source exists.
Preferably, be equipped with wireless monitoring equipment 5 in the yurt main part 1, it is further, yurt main part 1's top is equipped with the solar cell panel 6 for the power supply of wireless monitoring equipment 5, be equipped with the support of erectting wireless monitoring equipment 5 in yurt main part 1, wireless monitoring equipment 5 can adopt 4G video monitoring probe, the preferred solar energy power supply that adopts, can overcome the problem that the wind field sets up the long-term power difficulty, can real time monitoring thermometer display condition, the heating stove burning condition, share video account, accomplish the real time monitoring and the real-time sharing of site conditions, accomplish the supervision, managers at all levels such as owner are to the real-time control on-the-spot.
Preferably, in order to facilitate monitoring of the outside of the yurt body, an external monitoring device 10 is arranged on the outside of the yurt body 1, and the external monitoring device 10 can be a 4G video monitoring probe powered by solar energy.
Preferably, in order to monitor the temperature in the yurt body, a thermometer 7 is hung on the inner wall of the yurt body 1.
Preferably, the lighting window 8 and the skylight 9 of the yurt body 1 are both windows with heat-insulating rolling blinds, and the heat-insulating rolling blinds are arranged outside the yurt body 1 and can be selectively lifted or dropped according to the operation condition.
Preferably, a lighting device is arranged in the yurt body 1, and the lighting device is preferably supplied with power by solar energy.
Preferably, in order to reserve enough operating space, a certain distance is left between the inner wall of the Mongolian yurt main body 1 and the outer wall of the fan foundation column 3.
Preferably, a production facility is arranged in the Mongolian yurt body 1, and the production facility comprises a stirrer 11, a platform scale 12, stirring water 13, grouting material and the like
Preferably, a fire-fighting facility is arranged in the Mongolian yurt main body 1, and the fire-fighting facility is a fire extinguisher 14.
The components related by the invention are standard products which are mature in design at present, the uncertainty and nonstandard of the design quality of the traditional heat-preservation greenhouse are avoided, good conditions are more stably provided for the construction of secondary grouting, box transformer foundations and settlement observation reference points in winter by innovatively combining and using the components which are good in controllability, high in standardization degree and generally easy to obtain, resources are better saved, particularly, the labor input is saved, and the construction quality is effectively guaranteed.
In use, as shown in fig. 2, first, a heat-insulating facility (yurt body 1), a heat source facility (gas furnace 4, gas tank 41), a production facility (stirrer 11, platform scale 12, stirring water 13, grouting material, etc.), a fire-fighting facility (fire extinguisher 14), and an auxiliary facility (wireless monitoring device 5, solar cell panel 6, external monitoring device, thermometer 7) are purchased and set according to the size of the area of the fan foundation column 3.
After the relevant facilities arrive at the site, the site of the yurt body 1 in the building range is leveled firstly, the yurt body is enabled to have the building conditions of the greenhouse facilities, after the building, the light section steel framework of the yurt body 1 which arrives at the site is assembled and built around the fan foundation column 3, the fan foundation secondary grouting layer 2 and the surrounding area are preliminarily cleaned before the fabric of the yurt body 1 is sealed, the lighting and wireless monitoring equipment 5, the solar cell panel 6, the fire-fighting facilities and the thermometer 7 are installed after the sealing, after the working procedure is completed, the heat source facilities (the gas furnace 4 and the gas tank 41) are arranged, the heating and the temperature rise are started before the internal grouting construction, and meanwhile, the production facilities (the stirrer 11, the platform scale 12, the stirring water 13, the grouting material and the like) are transferred into the greenhouse. And (3) performing secondary grouting operation after the thermometer 7 displays that the environmental temperature reaches above 5 ℃, wherein before grouting, roughening and secondary cleaning are required on the secondary grouting layer 2 area of the fan foundation.
Timely cover film and the cotton felt that keeps warm after fan basis secondary grout blanket 2 construction is accomplished, moisturize, keep warm maintenance, gas furnace 4 keeps opening during the maintenance, and wireless supervisory equipment 5 keeps opening, shows the condition to indoor thermometer 7, and the 4 burning condition of gas furnace monitors, adjusts gas furnace 4 according to the temperature condition and opens the size, and the personnel that need regularly go on tour during, moisturize fan basis secondary grout blanket 2 regional watering, ensure construction quality.
And after the maintenance is finished, the heat-preservation greenhouse is dismantled or transferred to the next construction machine position.
Claims (10)
1. The utility model provides a high and cold area fan basis secondary grouting winter construction regularization heat preservation greenhouse which characterized in that: including yurt main part (1), yurt main part (1) sets up and covers fan basis styletable (3) around fan basis styletable (3) before fan basis secondary grouting layer (2) construction, forms relative confined construction operation space, be equipped with controllable gas furnace (4) of burning in yurt main part (1).
2. The high and cold area fan foundation secondary grouting winter construction sizing heat preservation greenhouse of claim 1, characterized in that: the Mongolian yurt is characterized in that a wireless monitoring device (5) is arranged in the Mongolian yurt main body (1).
3. The high and cold area fan foundation secondary grouting winter construction sizing heat preservation greenhouse of claim 2, characterized in that: the top of the Mongolian yurt main body (1) is provided with a solar cell panel (6) for supplying power to the wireless monitoring equipment (5).
4. The high and cold area fan foundation secondary grouting winter construction sizing heat preservation greenhouse of claim 1, characterized in that: a thermometer (7) is arranged in the Mongolian yurt main body (1).
5. The high and cold area fan foundation secondary grouting winter construction sizing heat preservation greenhouse of claim 1, characterized in that: the lighting window (8) and the skylight (9) of the yurt main body (1) are both windows with heat-preservation roller shutters, and the heat-preservation roller shutters are arranged on the outer side of the yurt main body (1).
6. The high and cold area fan foundation secondary grouting winter construction sizing heat preservation greenhouse of claim 1, characterized in that: and lighting equipment is arranged in the Mongolian yurt main body (1).
7. The high and cold area fan foundation secondary grouting winter construction sizing heat preservation greenhouse of claim 1, characterized in that: a certain distance is reserved between the inner wall of the Mongolian yurt main body (1) and the outer wall of the fan foundation column (3).
8. The high and cold area fan foundation secondary grouting winter construction sizing heat preservation greenhouse of claim 1, characterized in that: a production facility is arranged in the Mongolian yurt main body (1).
9. The high and cold area fan foundation secondary grouting winter construction sizing heat preservation greenhouse of claim 1, characterized in that: fire-fighting facilities are arranged in the Mongolian yurt main body (1).
10. The high and cold area fan foundation secondary grouting winter construction sizing heat preservation greenhouse of claim 1, characterized in that: the outer side of the Mongolian yurt main body (1) is provided with external monitoring equipment (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210318783.2A CN114837233A (en) | 2022-03-29 | 2022-03-29 | High and cold area fan basis secondary grouting winter construction regularization heat preservation greenhouse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210318783.2A CN114837233A (en) | 2022-03-29 | 2022-03-29 | High and cold area fan basis secondary grouting winter construction regularization heat preservation greenhouse |
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| Publication Number | Publication Date |
|---|---|
| CN114837233A true CN114837233A (en) | 2022-08-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210318783.2A Pending CN114837233A (en) | 2022-03-29 | 2022-03-29 | High and cold area fan basis secondary grouting winter construction regularization heat preservation greenhouse |
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| Country | Link |
|---|---|
| CN (1) | CN114837233A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201857799U (en) * | 2010-11-25 | 2011-06-08 | 东北石油大学 | Double-layer inflatable heat insulation tent for winter construction of cold area |
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2022
- 2022-03-29 CN CN202210318783.2A patent/CN114837233A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201857799U (en) * | 2010-11-25 | 2011-06-08 | 东北石油大学 | Double-layer inflatable heat insulation tent for winter construction of cold area |
Non-Patent Citations (1)
| Title |
|---|
| 张越明: "《建筑工程施工工艺与典型案例实务全书 下》", 31 August 1999, 中国环境科学出版社 * |
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Application publication date: 20220802 |