CN107989121B - Freezing structure for protecting municipal pipelines in city - Google Patents
Freezing structure for protecting municipal pipelines in city Download PDFInfo
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- CN107989121B CN107989121B CN201711209752.9A CN201711209752A CN107989121B CN 107989121 B CN107989121 B CN 107989121B CN 201711209752 A CN201711209752 A CN 201711209752A CN 107989121 B CN107989121 B CN 107989121B
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- 238000007710 freezing Methods 0.000 title claims abstract description 82
- 230000008014 freezing Effects 0.000 title claims abstract description 81
- 239000004568 cement Substances 0.000 claims abstract description 33
- 238000010276 construction Methods 0.000 claims abstract description 27
- 238000002156 mixing Methods 0.000 claims abstract description 18
- 238000003466 welding Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 235000003570 Phyllostachys pubescens Nutrition 0.000 claims abstract description 4
- 241001520913 Phyllostachys edulis Species 0.000 claims abstract 2
- 239000002689 soil Substances 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 17
- 235000019353 potassium silicate Nutrition 0.000 claims description 16
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000010257 thawing Methods 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 26
- 229910052757 nitrogen Inorganic materials 0.000 description 13
- 238000009412 basement excavation Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 238000004321 preservation Methods 0.000 description 4
- 244000302661 Phyllostachys pubescens Species 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
Images
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
- E02D31/10—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 against soil pressure or hydraulic pressure
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/09—Component parts or accessories
- E03B7/10—Devices preventing bursting of pipes by freezing
- E03B7/12—Devices preventing bursting of pipes by freezing by preventing freezing
-
- 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
- E02D31/08—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 against transmission of vibrations or movements in the foundation soil
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/02—Protection of pipes or objects of similar shape against external or internal damage or wear against cracking or buckling
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/11—Improving or preserving soil or rock, e.g. preserving permafrost soil by thermal, electrical or electro-chemical means
- E02D3/115—Improving or preserving soil or rock, e.g. preserving permafrost soil by thermal, electrical or electro-chemical means by freezing
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- 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
- E02D31/10—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 against soil pressure or hydraulic pressure
- E02D31/14—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 against soil pressure or hydraulic pressure against frost heaves in soil
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Agronomy & Crop Science (AREA)
- Soil Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Piles And Underground Anchors (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a freezing structure for protecting municipal pipelines in cities, which is characterized in that a stress release hole is arranged at a distance of 15-20 m away from a newly-built building, a freezing pipe is arranged at a distance of 7-9 m away from the stress release hole, and a circular arc frozen wall is formed after freezing construction is finished; the adjacent rows of freezing pipes are arranged in a quincunx crossed manner, a temperature measuring pipe is arranged between the adjacent rows of freezing pipes at the end part, and the depth of the temperature measuring pipe is the same as that of the freezing pipes; the freezing pipes are connected by adopting a thread and a sealing agent, and the joints are subjected to repair welding to ensure the concentricity and welding strength among all pipe joints; arranging an anti-frost-heaving ditch at a distance of 35-50 m from the newly built building; three cement mixing piles are arranged at the joint of the pipeline, the cement mixing piles are arranged in an occlusion manner, and moso bamboos are inserted into the cement mixing piles.
Description
The application is a divisional application with application number 201610311186.1, the name of a parent application is 'structure for protecting municipal pipelines', and the date of the application of the parent application is 2016, 4 and 30.
Technical Field
The invention relates to a structure for protecting urban municipal pipelines, which is suitable for the municipal field.
Background
With the development of basic construction, buildings (structures) and roads in cities are more and more dense, a large number of municipal pipelines are buried underground, and due to the shortage of land, projects are built in dense building groups, and due to the fact that the municipal pipelines are damaged by soil-squeezing pile construction, the cases of damage to the municipal pipelines caused by the soil-squeezing pile construction happen occasionally, so that the problem of how to prevent the soil-squeezing pile construction from influencing the municipal pipelines is paid attention to engineers.
Disclosure of Invention
The invention provides a structure for protecting municipal pipelines, which solves the problem of influence of traditional soil-extruding pile construction on the municipal pipelines.
The stress release holes are arranged at a distance of 15-20 m from a newly-built building, the diameter of each stress release hole is 500-700 mm, the depth of each stress release hole is 18-25 mm, and bamboo cages are placed in the stress release holes to prevent the stress release holes from collapsing during construction of the newly-built building.
The freezing pipe is arranged at a distance of 7-9 m away from the stress release hole, the stress release hole is formed between the newly-built building and the freezing pipe, the diameter of the freezing pipe is 90-150 mm, and the wall thickness of the freezing pipe is 5-8 mm. The freezing pipes are arranged in three rows, each row of freezing pipes is arranged into an arc shape, an arc-shaped frozen wall can be formed after freezing construction is finished, and the horizontal extrusion force generated during soil-extruding pile construction can be converted into oblique force by the arc-shaped frozen wall relative to a straight frozen wall, so that the horizontal extrusion force is effectively resisted. The freezing pipes in adjacent rows are arranged in a quincunx crossing mode, the depth of the freezing pipes is 16-20 m, the distance between the freezing pipes is 500-600 mm, a temperature measuring pipe is arranged between the freezing pipes in the adjacent rows and is arranged at the end of each row of the freezing pipes, the depth of the temperature measuring pipe is the same as that of the freezing pipes, and the expansion speed of frozen soil during freezing construction is 20-25 mm/d. The freezing pipes are connected by adopting a thread and a sealing agent, and the joints are subjected to repair welding to ensure the concentricity and the welding strength among all pipe joints.
According to the characteristics of the arc freezing wall, the freezing pipe is frozen by liquid nitrogen, the temperature of the outlet of the liquid nitrogen storage tank is controlled to be-150 to-170 ℃, the pressure is controlled to be 0.05 to 0.1MPa, the liquid nitrogen uses a loop type cooling plate to adjust the temperature, and a stop valve on the liquid nitrogen storage tank is used for adjusting the pressure. Because the liquid nitrogen temperature is low, the temperature difference between the inside and the outside of the pipe is large, and the cold loss is easy to generate, the pipeline needs to be subjected to heat preservation treatment, and the nitrogen supply main pipe is wrapped by 2 layers of 10 mm-thick polyethylene heat preservation materials and 3 layers of sealing films alternately. According to the test result, the supply amount of liquid nitrogen for achieving the frozen soil expansion speed of 20-25 mm/d is 1.2-1.3 t per hour. The pressure of the freezing pipe is controlled to be 0.05-0.1 MPa.
Arranging an anti-frost-heaving ditch at a distance of 35-50 m away from the newly-built building, wherein the width of the anti-frost-heaving ditch is 600-800 mm, the depth is determined according to the soil quality condition, and when the soil quality is clay, the depth is more than 700mm and less than or equal to 800 mm; when the soil is silt, the depth is more than 600mm and less than or equal to 700 mm; when the soil is sandy soil, the depth is 600 mm. Tests show that the frost heaving conditions of different soil qualities are different, the clay is the largest, the silt is the second, and the sandy soil is the smallest.
In order to avoid overlarge frost heaving deformation of the soil body, the frost heaving of the soil body is tested, and construction control is carried out. If the maximum frost heaving amount of the soil body exceeds or is equal to 3mm, the freezing speed needs to be increased, and the frozen soil expansion speed is 25-35 mm/d.
In order to further prevent horizontal extrusion force generated during construction from influencing a pipeline joint, three cement mixing piles are arranged at the pipeline joint, the diameter of each cement mixing pile is 450-550 mm, the cement mixing piles are arranged in a meshed mode, and moso bamboos are inserted into the cement mixing piles to resist the horizontal extrusion force generated during construction.
The construction steps comprise:
(1) arranging freezing devices
The bottom of the freezing pipe is provided with a drill bit, and the drill bit rotates to stir the soil body and simultaneously freezes the pipe to sink.
Freezing the borehole deviation is a difficult problem encountered in engineering, and in order to solve the problem, the invention adopts the following method for controlling the drilling process: the flashlight is placed in the freezing pipe to serve as an observation mark, the position of lamplight in the pipe is observed in a segmented mode through the theodolite, the actual deviation distance, the deviation direction and the deviation rate of the drill hole at a certain depth are analyzed according to the similar triangle principle, and the deviation rate of the drill hole is controlled within 3%.
(2) Construction of cement mixing pile
(3) Excavation frost heaving prevention ditch
(4) Stress relief hole for excavation
(5) Freezing construction
The temperature of the positive freezing period is-30 ℃ to-32 ℃, and the temperature of the maintenance freezing period is-28 ℃ to-30 ℃.
(6) Thaw collapse compensation grouting
After thawing, the soil body sinks, so that a thawing-sinking compensation measure needs to be taken. When the sinking rate of the soil body after thawing is more than or equal to 3mm, injecting mixed liquid of cement and water glass into the frozen soil area, wherein the mixed liquid of cement and water glass is prepared according to the following proportion: the volume ratio of the cement paste to the water glass solution is 1:1, wherein the water cement ratio of the cement paste is 1, and the water glass solution is diluted by B35-B40 water glass and water added by 1-2 times of volume. The grouting pressure is 0.4-0.5 MPa.
The invention has safe and reliable operation and good performance of the protection structure.
Drawings
FIG. 1 is a schematic diagram of a structure for protecting municipal pipelines.
The reference symbols: 1. stress release hole, 2, freezing pipe, 3, temperature measuring pipe, 4, anti-freezing expansion groove, 5, cement mixing pile, 6 and pipeline.
Detailed Description
The present embodiment is described in detail below with reference to the accompanying drawings.
The present embodiment arranges stress release holes 1 at a distance of 18m from the newly built building, the diameter of the stress release holes 1 being 600mm, and the depth of the stress release holes 1 being 20 mm.
The freezing pipe 2 is arranged at a distance of 8m from the stress release hole, the diameter of the freezing pipe 2 is 100mm, and the wall thickness of the freezing pipe 2 is 6 mm. The freezing pipes 2 are arranged in three rows, each row of the freezing pipes 2 is arranged in an arc shape, and after freezing construction is finished, an arc-shaped frozen wall can be formed. The freezing pipes 2 in the adjacent rows are arranged in a quincunx-shaped crossed mode, the depth of each freezing pipe 2 is 18m, the distance between every two freezing pipes 2 is 550mm, a temperature measuring pipe 3 is arranged between every two freezing pipes 2 in the adjacent rows, the temperature measuring pipe 3 is arranged at the end of each freezing pipe 2, the depth of each temperature measuring pipe 3 is the same as that of each freezing pipe 2, and the expansion speed of frozen soil in freezing construction is 20-25 mm/d. The freezing pipes 2 are connected by adopting a thread and a sealing agent, and the joints are subjected to repair welding to ensure the concentricity and the welding strength among all pipe joints.
The freezing pipe 2 is frozen by liquid nitrogen, the temperature of the outlet of the liquid nitrogen storage tank is controlled at minus 160 ℃, the pressure is controlled at 0.08MPa, the liquid nitrogen uses a loop type cooling plate to adjust the temperature, and the pressure is adjusted by using a stop valve on the liquid nitrogen storage tank. And (3) carrying out heat preservation treatment on the pipeline, wherein the nitrogen supply main pipe is alternately wrapped by 2 layers of 10 mm-thick polyethylene heat preservation materials and 3 layers of sealing films. The supply amount of the liquid nitrogen is 1.2-1.3 t per hour. The pressure of the freezing pipe 2 is controlled at 0.08 MPa.
And arranging an anti-frost heaving ditch 4 at a distance of 38m from the newly built building, wherein the width of the anti-frost heaving ditch 4 is 700mm, and the depth of the anti-frost heaving ditch is 650 mm.
If the maximum frost heaving amount of the soil body exceeds or is equal to 3mm, the freezing speed needs to be increased, and the frozen soil expansion speed is 25-35 mm/d.
Three cement mixing piles 5 are arranged at the joint position of the pipeline 6, the diameter of each cement mixing pile 5 is 500mm, the cement mixing piles 5 are arranged in a meshing mode, and moso bamboos are inserted into the cement mixing piles 5.
The construction steps comprise:
(1) arranging freezing devices
The bottom of the freezing pipe 2 is provided with a drill bit, and the drill bit rotates to stir the soil body and simultaneously the freezing pipe 2 sinks for construction.
The following method is adopted to control the drill hole deflection: the flashlight is placed in the freezing pipe 2 to serve as an observation mark, the position of lamplight in the pipe is observed in a segmented mode through the theodolite, the actual deviation distance, the deviation direction and the deviation rate of the drill hole at a certain depth are analyzed according to the similar triangle principle, and the deviation rate of the drill hole is controlled within 3%.
(2) Construction of cement mixing pile 5
(3) Excavation frost heaving prevention ditch 4
(4) Excavation stress relief hole 1
(5) Freezing construction
The temperature of the positive freezing period is-30 ℃ to-32 ℃, and the temperature of the maintenance freezing period is-28 ℃ to-30 ℃.
(6) Thaw collapse compensation grouting
When the sinking rate of the soil body after thawing is more than or equal to 3mm, injecting mixed liquid of cement and water glass into the frozen soil area, wherein the mixed liquid of cement and water glass is prepared according to the following proportion: the volume ratio of the cement paste to the water glass solution is 1:1, wherein the water cement ratio of the cement paste is 1, and the water glass solution is diluted by B35-B40 water glass and water added by 1-2 times of volume. The grouting pressure is 0.4-0.5 MPa.
Claims (1)
1. A freezing structure for protecting urban municipal pipelines is characterized in that stress release holes are arranged at a distance of 15-20 m from a newly built building, the diameter of each stress release hole is 500-700 mm, and the depth of each stress release hole is 18-25 mm; arranging a freezing pipe at a distance of 7-9 m away from the stress release hole, wherein the stress release hole is arranged between the newly-built building and the freezing pipe, the diameter of the freezing pipe is 90-150 mm, and the wall thickness of the freezing pipe is 5-8 mm; the freezing pipes are arranged in three rows, each row of the freezing pipes is arranged in an arc shape, and an arc-shaped frozen wall can be formed after freezing construction is finished; the freezing pipes in adjacent rows are arranged in a quincunx crossed manner, the depth of the freezing pipes is 16-20 m, the distance between the freezing pipes is 500-600 mm, temperature measuring pipes are respectively arranged on two sides of the end part of one row of the freezing pipes, the depth of the temperature measuring pipes is the same as that of the freezing pipes, and the spreading speed of frozen soil during freezing construction is 20-25 mm/d; the freezing pipes are connected by adopting a thread and a sealing agent, and the joints are subjected to repair welding to ensure the concentricity and welding strength among all pipe joints; the pressure of the freezing pipe is controlled to be 0.05-0.1 MPa; arranging an anti-frost-heaving ditch at a distance of 35-50 m from the newly built building; arranging three cement mixing piles at the joint position of the pipeline, wherein the diameter of each cement mixing pile is 450-550 mm, the cement mixing piles are arranged in a meshing manner, and moso bamboos are inserted into the cement mixing piles;
during freezing construction, if the maximum frost heaving amount of the soil body is more than or equal to 3mm, the freezing speed is increased, and the frozen soil expansion speed is 25-35 mm/d;
during the construction of the freezing device, the following method is adopted to control the drill hole deflection: putting a flashlight into the freezing pipe as an observation mark, observing the position of lamplight in the pipe in sections by using a theodolite, and analyzing the actual deviation distance, the deviation direction and the deviation rate of the drill hole at a certain depth according to the similar triangle principle to ensure that the deviation rate of the drill hole is less than or equal to 3 percent;
after the freezing construction is finished, adopting thaw settlement compensation grouting, when the soil body sinking rate after thawing is more than or equal to 3mm, injecting mixed liquid of cement and water glass into the frozen soil area, wherein the mixed liquid of cement and water glass adopts the following proportion: the volume ratio of the cement paste to the water glass solution is 1:1, wherein the water cement ratio of the cement paste is 1, and the water glass solution is diluted by B35-B40 water glass and water with the volume 1-2 times of that of the water glass solution; the grouting pressure is 0.4-0.5 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711209752.9A CN107989121B (en) | 2016-04-30 | 2016-04-30 | Freezing structure for protecting municipal pipelines in city |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711209752.9A CN107989121B (en) | 2016-04-30 | 2016-04-30 | Freezing structure for protecting municipal pipelines in city |
| CN201610311186.1A CN105862932B (en) | 2016-04-30 | 2016-04-30 | Protect the structure of municipal pipeline |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610311186.1A Division CN105862932B (en) | 2016-04-30 | 2016-04-30 | Protect the structure of municipal pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107989121A CN107989121A (en) | 2018-05-04 |
| CN107989121B true CN107989121B (en) | 2020-06-05 |
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Family Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711209765.6A Active CN108036151B (en) | 2016-04-30 | 2016-04-30 | Protect the construction method of municipal pipeline |
| CN201711212375.4A Active CN107989079B (en) | 2016-04-30 | 2016-04-30 | Structure for protecting municipal pipeline in city |
| CN201610311186.1A Active CN105862932B (en) | 2016-04-30 | 2016-04-30 | Protect the structure of municipal pipeline |
| CN201711209752.9A Active CN107989121B (en) | 2016-04-30 | 2016-04-30 | Freezing structure for protecting municipal pipelines in city |
| CN201711209771.1A Active CN107989152B (en) | 2016-04-30 | 2016-04-30 | Freezing structure for protecting municipal pipeline |
Family Applications Before (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711209765.6A Active CN108036151B (en) | 2016-04-30 | 2016-04-30 | Protect the construction method of municipal pipeline |
| CN201711212375.4A Active CN107989079B (en) | 2016-04-30 | 2016-04-30 | Structure for protecting municipal pipeline in city |
| CN201610311186.1A Active CN105862932B (en) | 2016-04-30 | 2016-04-30 | Protect the structure of municipal pipeline |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711209771.1A Active CN107989152B (en) | 2016-04-30 | 2016-04-30 | Freezing structure for protecting municipal pipeline |
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| Country | Link |
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| CN (5) | CN108036151B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3066204B1 (en) | 2017-05-11 | 2020-12-04 | Vinci Construction | METHOD AND DEVICE FOR FREEZING A SOLID SOIL |
| CN108330968A (en) * | 2018-04-26 | 2018-07-27 | 佳琳 | A kind of anchor pole liquid feeding nitrogen frozen soil wall foundation pit enclosure structure and its construction method |
| CN108330991A (en) * | 2018-04-26 | 2018-07-27 | 佳琳 | A kind of soil nailing liquid feeding nitrogen frozen soil wall foundation pit enclosure structure and its construction method |
| CN108797603A (en) * | 2018-06-13 | 2018-11-13 | 王海霖 | A kind of protection network and liquid nitrogen frozen soil wall composite supporting construction and its construction method |
| CN108797605A (en) * | 2018-06-13 | 2018-11-13 | 王海霖 | A kind of the piled anchor formula composite supporting construction and its construction method of combination liquid nitrogen frozen soil wall |
| CN108797606A (en) * | 2018-06-13 | 2018-11-13 | 王海霖 | A kind of construction method of protection network and liquid nitrogen frozen soil wall composite support system |
| CN108797601A (en) * | 2018-06-13 | 2018-11-13 | 王海霖 | A kind of construction method of piled anchor and liquid nitrogen frozen soil wall composite support system |
| CN108797602A (en) * | 2018-06-13 | 2018-11-13 | 王海霖 | A kind of piled anchor and liquid nitrogen frozen soil wall composite supporting construction and its construction method |
| CN112145814B (en) * | 2020-09-24 | 2022-04-15 | 武汉大学 | Slurry shield wear-resistant slurry pipe for sandy gravel-cobble stratum |
| CN112227468A (en) * | 2020-10-26 | 2021-01-15 | 温州展业建设工程有限公司 | Freezing construction method for protecting municipal pipelines in city |
| CN113832953A (en) * | 2021-10-25 | 2021-12-24 | 广州市设计院集团有限公司 | Method for reducing influence of vacuum preloading on surrounding environment |
| CN115288735A (en) * | 2022-07-19 | 2022-11-04 | 北京中煤矿山工程有限公司 | Shallow buried underground space frozen soil steel pipe group composite pre-supporting structure and combined bearing reinforcement method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2153558C2 (en) * | 1998-11-02 | 2000-07-27 | Кубанский государственный аграрный университет | Landslide control structure for protection of underground pipelines |
| CN204199335U (en) * | 2014-09-29 | 2015-03-11 | 中国建筑第八工程局有限公司 | A kind of pressure release well reducing PHC tube pile construction soil compaction effect |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2164274C2 (en) * | 1998-01-27 | 2001-03-20 | Шемелин Геннадий Иванович | Thermal device for cooling and freezing of soil |
| CN1614152A (en) * | 2004-10-14 | 2005-05-11 | 上海隧道工程股份有限公司 | Constructing method for in tunnel weak soil layer by freezing method horizontally |
| RU2384672C1 (en) * | 2009-02-11 | 2010-03-20 | Александр Иванович Абросимов | Cooled pile support for structures erected on permanently frozen soil |
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| CN103334757B (en) * | 2013-06-11 | 2015-04-15 | 中国矿业大学(北京) | Freezing pipe, frigo, and method of excavating rock-soil by adopting freezing method |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107989152B (en) | 2020-06-05 |
| CN107989079A (en) | 2018-05-04 |
| CN107989079B (en) | 2020-06-12 |
| CN108036151B (en) | 2019-06-04 |
| CN105862932A (en) | 2016-08-17 |
| CN108036151A (en) | 2018-05-15 |
| CN105862932B (en) | 2018-08-17 |
| CN107989152A (en) | 2018-05-04 |
| CN107989121A (en) | 2018-05-04 |
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