CN107938647B - Protect the frozen construction method of municipal pipeline - Google Patents
Protect the frozen construction method of municipal pipeline Download PDFInfo
- Publication number
- CN107938647B CN107938647B CN201711240089.9A CN201711240089A CN107938647B CN 107938647 B CN107938647 B CN 107938647B CN 201711240089 A CN201711240089 A CN 201711240089A CN 107938647 B CN107938647 B CN 107938647B
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- Prior art keywords
- piece
- freeze
- drilled
- pipe
- frozen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- 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
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/14—Restraining of underground water by damming or interrupting the passage of underground water by freezing the soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
-
- 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
Abstract
The invention discloses a kind of frozen construction methods for protecting municipal pipeline; it is characterized in that arranging stress relief hole with a distance from 15~20m of New Buildings; with a distance from 7~9m of stress relief hole arrangement freeze piece, freeze piece arrangement it is in the arc-shaped, will form arc-shaped jelly wall after frozen construction；Freeze piece construction use it is as follows: freeze the circumferential of piece and geology successively used to be drilled with diameter as the series of holes of 80~90mm in edge, in the aperture for being drilled mud injection during being drilled with, next aperture is bored after each star drill to bottom again, piece will be freezed by pressure apparatus after being drilled with and be depressed into designated position.
Description
Technical field
The present invention relates to a kind of frozen construction methods for protecting municipal pipeline, are suitable for municipal field.
Background technique
With the development of capital construction, the buildings or structures, road in city are more and more intensive, and a large amount of municipal pipeline
It is buried underground, due to land used anxiety, engineering is built in intensive building, the neighbouring municipal administration due to caused by soil compaction pile driving construction
The example of pipeline failure will happen occasionally, therefore how prevent influence problem of the soil compaction pile driving construction to municipal pipeline from having caused work
The attention of Cheng personnel.
Summary of the invention
The present invention is to provide a kind of frozen construction method for protecting municipal pipeline, solves traditional soil compaction pile driving construction and manages to municipal administration
The problem of influence of line.
The present invention arranges stress relief hole with a distance from 15~20m of New Buildings, stress release bore dia is 500~
700mm, stress release hole depth are 18~25mm, and being put into bamboo cage in stress relief hole when preventing New Buildings from constructing, stress is released
There is collapse hole in discharge hole.
Freezing pipe is arranged with a distance from 7~9m of stress relief hole, freezing pipe diameter is 90~150mm, and freezing thickness of pipe wall is 5
~8mm.Three row of layout of freezing pipes, every row's layout of freezing pipes is in the arc-shaped, will form arc-shaped jelly wall after frozen construction, circle
The horizontal compression that arc jelly wall generates when can be by soil compaction pile driving construction with respect to straight jelly wall is converted to skew force, effectively resists
Horizontal compression.Adjacent row freezing pipe uses quincunx arranged crosswise, and freezing pipe depth is 16~20m, and freezing tube spacing is 500
Temperature tube is arranged between the adjacent row freezing pipe of end in~600mm, and temperature tube depth is identical as freezing pipe depth, when frozen construction
Frozen soil expansion rate is 20~25mm/d.Connection between freezing pipe adds sealant to connect using screw thread, and seam crossing carries out repair welding,
Ensure the concentricity and weld strength between each tube coupling.
According to arc-shaped the characteristics of freezing wall, freezing pipe uses liquid nitrogen frozen, the temperature control of liquid nitrogen storage tank outlet-
150~-170 DEG C, pressure control carries out temperature adjusting using heat sink in circuit in 0.05~0.1MPa, liquid nitrogen, and pressure is adjusted
Use the shut-off valve on liquid nitrogen storage tank.Since liquid nitrogen temperature is low, pipe inside and outside temperature difference is larger, is also easy to produce loss of refrigeration capacity, therefore need
Isothermal holding is carried out to pipeline, the polytene heat-insulation material and 3 layers of sealing film alternating packets of 2 layers of 10mm thickness are used for nitrogen main pipe
It wraps up in.According to test result, to reach the supply amount that frozen soil expansion rate is 20~25mm/d liquid nitrogen for 1.2~1.3t per hour.
Freeze pipe pressure control in 0.05~0.1MPa.
Arrange that anti-freeze expansion ditch, anti-freeze expansion ditch width are 600~800mm, depth root with a distance from 35~50m of New Buildings
It is determined according to soil property situation, when soil property is clay, depth is greater than 700mm and is less than or equal to 800mm；When soil property is silt, depth
Greater than 600mm and it is less than or equal to 700mm；When soil property is sand, depth 600mm.Test finds the frost heave feelings of different soil properties
Condition is different, and clay is maximum, and silt is secondly, sand is minimum.
In order to avoid the excessive frost-heaving deformation of the soil body, body frost heaving is tested, and carries out Construction control.If native
Body maximum frost heaving amount uses 25~35mm/d than or equal to 3mm, Yao Zeng great freezing speed, frozen soil expansion rate.
In order to further prevent the horizontal compression generated when construction to influence pipe joint, three are arranged at pipe joint position
Root cement mixing pile, cement mixing pile diameter are 450~550mm, and cement mixing pile uses snap-fit arrangement, cement mixing pile interpolation
The horizontal compression generated when entering moso bamboo to resist construction.
Construction procedure includes:
(1) freezing plant is arranged
Freezing pipe bottom has drill bit, and drill bit carries out rotation on one side and stirs the body freezing pipe sinking construction simultaneously that loosens the soil.
Freezing borehole deflection is the problem encountered in engineering, and in order to solve this problem, the present invention adopts in boring procedure
It is controlled with the following method: flashlight is put into freezing pipe as observation monument, with the theodolite with optics to electric appliance
Be segmented the position of light in sighting tube, according to similar triangle theory, parse drilling certain depth practical deflection distance,
Skew direction and deviation proportion, Hole deviation control within 3%.
(2) cement mixing pile driving construction
(3) anti-freeze expansion ditch is excavated
(4) stress relief hole is excavated
(5) frozen construction
Positive freezing period temperature is -30 DEG C~-32 DEG C, and maintenance freezing period temperature is -28 DEG C~-30 DEG C.
(6) thaw collapse compensation and grouting
The soil body will appear sinking after defrosting, therefore take thaw collapse indemnifying measure.Soil body fall rate is greater than after defrosting
Or when being equal to 3mm, cement and waterglass mixed liquor are injected in frozen soil region, cement and waterglass mixed liquor proportion are using such as
Under: cement slurry and water glass solution volume ratio are 1:1, and wherein the cement slurry ratio of mud is 1, and water glass solution uses B35~B40 water
Glass and the water dilution for adding 1~2 times of volume.Grouting pressure is 0.4~0.5MPa.
Operation of the present invention is safe and reliable, protects the performance of structure good.
Detailed description of the invention
The structural schematic diagram of Fig. 1 protection municipal pipeline.
Attached drawing mark: 1, stress relief hole, 2, freezing pipe, 3, temperature tube, 4, anti-freeze expansion ditch, 5, cement mixing pile, 6, pipe
Line.
Specific embodiment
The present embodiment is described in detail below in conjunction with attached drawing.
The present embodiment arranges that stress relief hole 1,1 diameter of stress relief hole are 600mm with a distance from New Buildings 18m,
1 depth of stress relief hole is 20mm.
Arrange that freezing pipe 2,2 diameter of freezing pipe are 100mm with a distance from stress relief hole 8m, 2 wall thickness of freezing pipe is 6mm.
Freezing pipe 2 arranges three rows, and every row's freezing pipe 2 is arranged in the arc-shaped, will form arc-shaped jelly wall after frozen construction.Adjacent row
Freezing pipe 2 uses quincunx arranged crosswise, and 2 depth of freezing pipe is 18m, and 2 spacing of freezing pipe is 550mm, and end adjacent row freezes
Temperature tube 3 is set between pipe 2,3 depth of temperature tube is identical with 2 depth of freezing pipe, when frozen construction frozen soil expansion rate for 20~
25mm/d.Connection between freezing pipe 2 adds sealant to connect using screw thread, and seam crossing carries out repair welding, it is ensured that same between each tube coupling
Heart degree and weld strength.
Freezing pipe 2 uses liquid nitrogen frozen, and at -160 DEG C, pressure is controlled in 0.08MPa for the temperature control of liquid nitrogen storage tank outlet,
Liquid nitrogen carries out temperature adjusting using heat sink in circuit, and pressure is adjusted using the shut-off valve on liquid nitrogen storage tank.Pipeline is protected
Temperature processing, for nitrogen main pipe using the polytene heat-insulation material and 3 layers of sealing films alternating package of 2 layers of 10mm thickness.The supply of liquid nitrogen
Amount is 1.2~1.3t per hour.2 pressure of freezing pipe is controlled in 0.08MPa.
Arrange that anti-freeze expansion ditch 4,4 width of anti-freeze expansion ditch are 700mm, depth 650mm with a distance from New Buildings 38m.
If soil body maximum frost heaving amount is than or equal to 3mm, Yao Zeng great freezing speed, frozen soil expansion rate using 25~
35mm/d。
Arrange that three cement mixing piles 5,5 diameter of cement mixing pile are 500mm, cement mixing pile 5 in 6 joint area of pipeline
Using snap-fit arrangement, moso bamboo is inserted into cement mixing pile 5.
Construction procedure includes:
(1) freezing plant is arranged
2 bottom of freezing pipe has drill bit, and drill bit carries out rotation on one side and stirs body 2 sinking construction of freezing pipe simultaneously that loosens the soil.
Control hole scattering is carried out with the following method: flashlight is put into freezing pipe 2 as observation monument, with having
Optics parses drilling in certain depth according to similar triangle theory to the position of light in the theodolite segmentation sighting tube of electric appliance
Practical deflection distance, skew direction and deviation proportion at degree, Hole deviation control within 3%.
(2) cement mixing pile 5 is constructed
(3) anti-freeze expansion ditch 4 is excavated
(4) stress relief hole 1 is excavated
(5) frozen construction
Positive freezing period temperature is -30 DEG C~-32 DEG C, and maintenance freezing period temperature is -28 DEG C~-30 DEG C.
(6) thaw collapse compensation and grouting
When soil body fall rate is greater than or equal to 3mm after defrosting, cement and waterglass mixing are injected in frozen soil region
Liquid, cement and waterglass mixed liquor proportion use as follows: cement slurry and water glass solution volume ratio is 1:1, wherein cement pulp-water
Gray scale is 1, and water glass solution is using B35~B40 waterglass and the water of 1~2 times of volume is added to dilute.Grouting pressure be 0.4~
0.5MPa。
Claims (1)
1. a kind of frozen construction method for protecting municipal pipeline, is answered it is characterized in that arranging with a distance from 15~20m of New Buildings
Power relief hole, stress release bore dia are 500~700mm, and stress release hole depth is 18~25mm；From stress relief hole 7~
Arrangement freezes piece at 9m distance, freeze piece supervisor be it is arc-shaped, arc length is 300~350mm, freezes piece supervisor using steel
Pipe, for steel pipe with a thickness of 12~15mm, pipe diameter length is 80~120mm；It is adjacent to freeze to keep 150~200mm's between piece
Gap；Freeze piece lower section setting triangle blade foot in order to freeze piece；Freeze piece side setting air inlet pipe and exhaust pipe, into
Tracheal diameter is 35~45mm, and air slit diameter is 55~65mm；To isothermal holding is carried out outside air inlet pipe and exhaust pipe, use
The additional 1 layer of sealing film of the polytene heat-insulation material of 2 layers of 10mm thickness is wrapped up；Freeze piece and arranges in the arc-shaped, frozen construction
After will form arc-shaped jelly wall；Freezing piece depth is 16~20m, and piece both ends setting temperature tube is freezed in end, and temperature tube is deep
Spend identical as piece depth is freezed, frozen soil expansion rate is 20~25mm/d when frozen construction；Freeze the control of piece pressure 0.05~
0.1MPa；Anti-freeze expansion ditch is arranged with a distance from 35~50m of New Buildings；Three cement mixings are arranged at pipe joint position
Stake, cement mixing pile diameter are 450~550mm, and cement mixing pile uses snap-fit arrangement, is inserted into moso bamboo in cement mixing pile；
Freeze piece construction use it is as follows: successively use geology to be drilled with diameter as the serial small of 80~90mm along the circumferential of piece is freezed
Mud is injected in the aperture being drilled during being drilled with, bores next aperture after each star drill to bottom again, be drilled with by hole
Piece will be freezed by pressure apparatus after finishing and be depressed into designated position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711240089.9A CN107938647B (en) | 2016-04-30 | 2016-04-30 | Protect the frozen construction method of municipal pipeline |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711240089.9A CN107938647B (en) | 2016-04-30 | 2016-04-30 | Protect the frozen construction method of municipal pipeline |
| CN201610311395.6A CN105862720B (en) | 2016-04-30 | 2016-04-30 | Protect the construction of municipal pipeline |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610311395.6A Division CN105862720B (en) | 2016-04-30 | 2016-04-30 | Protect the construction of municipal pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107938647A CN107938647A (en) | 2018-04-20 |
| CN107938647B true CN107938647B (en) | 2019-08-30 |
Family
ID=56631797
Family Applications (7)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610311395.6A Active CN105862720B (en) | 2016-04-30 | 2016-04-30 | Protect the construction of municipal pipeline |
| CN201711244087.7A Active CN107916682B (en) | 2016-04-30 | 2016-04-30 | Freezing structure for protecting municipal pipeline |
| CN201711240089.9A Active CN107938647B (en) | 2016-04-30 | 2016-04-30 | Protect the frozen construction method of municipal pipeline |
| CN201711243951.1A Active CN107964939B (en) | 2016-04-30 | 2016-04-30 | Construction method for protecting municipal pipeline |
| CN201711244198.8A Active CN107938648B (en) | 2016-04-30 | 2016-04-30 | Freezing structure for protecting municipal pipelines in city |
| CN201711240574.6A Active CN108005059B (en) | 2016-04-30 | 2016-04-30 | Freezing construction method for protecting municipal pipelines in city |
| CN201711240002.8A Pending CN107964938A (en) | 2016-04-30 | 2018-01-11 | Protect the frozen construction technology of municipal pipeline |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610311395.6A Active CN105862720B (en) | 2016-04-30 | 2016-04-30 | Protect the construction of municipal pipeline |
| CN201711244087.7A Active CN107916682B (en) | 2016-04-30 | 2016-04-30 | Freezing structure for protecting municipal pipeline |
Family Applications After (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711243951.1A Active CN107964939B (en) | 2016-04-30 | 2016-04-30 | Construction method for protecting municipal pipeline |
| CN201711244198.8A Active CN107938648B (en) | 2016-04-30 | 2016-04-30 | Freezing structure for protecting municipal pipelines in city |
| CN201711240574.6A Active CN108005059B (en) | 2016-04-30 | 2016-04-30 | Freezing construction method for protecting municipal pipelines in city |
| CN201711240002.8A Pending CN107964938A (en) | 2016-04-30 | 2018-01-11 | Protect the frozen construction technology of municipal pipeline |
Country Status (1)
| Country | Link |
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| CN (7) | CN105862720B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105862720B (en) * | 2016-04-30 | 2018-07-03 | 叶香竹 | Protect the construction of municipal pipeline |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5730550A (en) * | 1995-08-15 | 1998-03-24 | Board Of Trustees Operating Michigan State University | Method for placement of a permeable remediation zone in situ |
| RU2164274C2 (en) * | 1998-01-27 | 2001-03-20 | Шемелин Геннадий Иванович | Thermal device for cooling and freezing of soil |
| JP2003239270A (en) * | 2002-02-14 | 2003-08-27 | Mac:Kk | Freezing method and pipe material used for the same |
| CN2627061Y (en) * | 2003-06-20 | 2004-07-21 | 中国矿业大学 | Liquid nitrogen partial freezing equipment |
| KR20050079973A (en) * | 2005-06-24 | 2005-08-11 | 김기수 | Process for reinforcing the ground on the upper part of a tunnel for excavating |
| CN101871218B (en) * | 2010-02-03 | 2012-04-18 | 上海隧道工程股份有限公司 | Trenchless construction method of underground station space and arc-shaped freezing pipe construction equipment thereof |
| CN102409691A (en) * | 2011-09-08 | 2012-04-11 | 同济大学 | Freezing process water stopping device of pre-buried freezing pipe at opening of wall body of underground continuous wall |
| CN105257297B (en) * | 2015-11-04 | 2017-10-10 | 中铁十八局集团有限公司 | The construction method of Frozen Soil Cylinder is precisely controlled between a kind of pipe |
| CN105862720B (en) * | 2016-04-30 | 2018-07-03 | 叶香竹 | Protect the construction of municipal pipeline |
-
2016
- 2016-04-30 CN CN201610311395.6A patent/CN105862720B/en active Active
- 2016-04-30 CN CN201711244087.7A patent/CN107916682B/en active Active
- 2016-04-30 CN CN201711240089.9A patent/CN107938647B/en active Active
- 2016-04-30 CN CN201711243951.1A patent/CN107964939B/en active Active
- 2016-04-30 CN CN201711244198.8A patent/CN107938648B/en active Active
- 2016-04-30 CN CN201711240574.6A patent/CN108005059B/en active Active
-
2018
- 2018-01-11 CN CN201711240002.8A patent/CN107964938A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107938648B (en) | 2020-06-26 |
| CN107916682A (en) | 2018-04-17 |
| CN107916682B (en) | 2020-06-19 |
| CN105862720A (en) | 2016-08-17 |
| CN108005059B (en) | 2020-06-26 |
| CN107964938A (en) | 2018-04-27 |
| CN107964939B (en) | 2020-06-26 |
| CN105862720B (en) | 2018-07-03 |
| CN107938648A (en) | 2018-04-20 |
| CN108005059A (en) | 2018-05-08 |
| CN107964939A (en) | 2018-04-27 |
| CN107938647A (en) | 2018-04-20 |
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Effective date of registration: 20201230 Address after: 251800 Liangwang village, Yanghu Township, Yangxin County, Binzhou City, Shandong Province Patentee after: Yangxin Longfeng metal products Co.,Ltd. Address before: 325000, 302, Jingshan Hill, Ouhai District, Zhejiang, Wenzhou, 11 rooms Patentee before: Ye Xiangzhu |
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Effective date of registration: 20210602 Address after: No. 58, Yingbin Avenue, Xiadu community, Pingnan County, Guigang City, Guangxi Zhuang Autonomous Region, 537300 Patentee after: Li Weizhi Address before: 251800 Liangwang village, Yanghu Township, Yangxin County, Binzhou City, Shandong Province Patentee before: Yangxin Longfeng metal products Co.,Ltd. |
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Effective date of registration: 20211223 Address after: 276800 No. 279, Linyi Road, Donggang District, Rizhao City, Shandong Province Patentee after: Rizhao Municipal Design and Research Institute Co.,Ltd. Address before: No. 58, Yingbin Avenue, Xiadu community, Pingnan County, Guigang City, Guangxi Zhuang Autonomous Region, 537300 Patentee before: Li Weizhi |
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