CN108005663A - Export ＆ import exempts from tube drawing consolidation by freezing construction method - Google Patents
Export ＆ import exempts from tube drawing consolidation by freezing construction method Download PDFInfo
- Publication number
- CN108005663A CN108005663A CN201711365446.4A CN201711365446A CN108005663A CN 108005663 A CN108005663 A CN 108005663A CN 201711365446 A CN201711365446 A CN 201711365446A CN 108005663 A CN108005663 A CN 108005663A
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- Prior art keywords
- freezing
- tube drawing
- pipe
- exempt
- hole
- 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.)
- Pending
Links
- 230000008014 freezing Effects 0.000 title claims abstract description 88
- 238000007710 freezing Methods 0.000 title claims abstract description 88
- 238000010276 construction Methods 0.000 title claims abstract description 37
- 238000007596 consolidation process Methods 0.000 title claims abstract description 15
- 230000008676 import Effects 0.000 title claims abstract description 14
- 238000012360 testing method Methods 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 238000011161 development Methods 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims abstract description 8
- 241000883966 Astrophytum capricorne Species 0.000 claims abstract description 7
- 238000005553 drilling Methods 0.000 claims description 21
- 239000012267 brine Substances 0.000 claims description 16
- 239000003292 glue Substances 0.000 claims description 16
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 16
- 238000005520 cutting process Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000002689 soil Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 229910003460 diamond Inorganic materials 0.000 claims description 6
- 239000010432 diamond Substances 0.000 claims description 6
- 239000000284 extract Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 4
- 238000012797 qualification Methods 0.000 claims description 4
- 238000007711 solidification Methods 0.000 claims description 4
- 230000008023 solidification Effects 0.000 claims description 4
- 230000006837 decompression Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 4
- 239000010962 carbon steel Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 244000137852 Petrea volubilis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- 238000012407 engineering method Methods 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Soil Sciences (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The present invention relates to a kind of export ＆ import to exempt from tube drawing consolidation by freezing construction method, its step is：1）Freezing hole is crept into be installed with frigo；2）Exempt from tube drawing to make and be bonded；3）Exempt from the decentralization of tube drawing；4）Exempt from tube drawing and suppress test；5）Exempt from the installation of tube drawing goat's horn；6）Actively freeze；7）Portal is cut；8）Liquid supply pipe is extracted, driving originates.The export ＆ import of the present invention exempts from tube drawing consolidation by freezing construction method, exempt from tube drawing using for congelation, in development machine export ＆ import, it need not carry out pulling out freezing pipe operation, directly shield-tunneling construction can be carried out after frozen construction reaches requirement, thus avoid in conventional tube drawing operation because tube drawing and caused by freezing hole rupture and cause construction safety problem.
Description
Technical field
Exempt from tube drawing consolidation by freezing construction method during the present invention relates to a kind of development machine into hole, more particularly, to shield machine into
The exempting from of being reinforced to the soil body on the outside of tunnel and push pipe received well and starting well building enclosure of appearing pulls out construction method.
Background technology
Construction of Urban Rail Traffic often uses shield construction, and shield machine is when appearing, in order to ensure that it is preferable that the soil body has
Independence, generally carries out region foundation stabilization of appearing using cement system engineering method.Recently as the rapid development of track traffic, car
The depth stood is more and more deeper, inevitably encounters sandy soil layer.In order to ensure shield starting safety, preferably block pressure-bearing and contain
Water layer, can aid in freezing consolidation.Construction freezing method is as a kind of ripe construction technology, in Construction of Urban Rail Traffic
In achieve suitable rich experience achievement.Its main purpose is to maintain the stabilization of the region reinforcement soil body of appearing, and ensures shield machine
Appear safety, and the material that conventional freezing pipe uses is carbon steel, after freezing efficiency reaches design requirement, it is necessary to which hole is enclosed in
The freezing pipe in portion is pulled out rear shield and just can normally be promoted.When normal extubation time generally needs 8-10 small, the consuming time is longer, and
Need to thaw temporarily before tube drawing；Carbon steel can become fragile under cryogenic, there is disconnected manage-style danger when carrying out pulling out operation, once pull out
It is disconnected, processing procedure can complex, and time-consuming longer, the soil body can rise again defrosting, then shield starting there is sizable
Risk.In order to avoid pulling off this construction risk of freezing pipe, a kind of pvc pipe is considered as freezing pipe, pvc pipe is after freezing
It can become fragile, shield cutter can directly cut freezing pipe, it is not necessary to carry out tube drawing operation, avoid possible during tube drawing break
Manage, gush sand and emit the dangerous situations such as water, improve the security that shield machine is appeared.
The content of the invention
The present invention is to provide for a kind of export ＆ import and exempts from tube drawing consolidation by freezing construction method, and this method makes development machine into (going out) hole
During, without carrying out pulling out freezing pipe operation, shield-tunneling construction directly can be carried out after frozen construction reaches requirement, so as to keep away
Exempt from conventional tube drawing operation because tube drawing and caused by freezing hole rupture and cause construction safety problem.
To achieve the above object, the technical scheme is that：A kind of export ＆ import exempts from tube drawing consolidation by freezing construction method, its
Step is：
1) freezing hole drilling is installed with frigo
(1) before horizontal frozen hole drilling, first using Φ 121mm diamond drill machine first time perforates, coring after 400mm is crept into,
Fixed orifice device and pressing device are installed, then use Φ 96mm diamond bits instead, concrete chemise and enclosure wall are drilled through, Ran Houhuan
Φ 89mm freezing pipes are as rod boring, until boring up to design hole depth；
(2) load freezing pipe in freezing hole, and suppress leak test；
(3) liquid supply pipe is loaded in freezing pipe, then installation goes, circuit goat's horn and freezes pipe end-cap；
(4) warm hole construction is carried out using the construction method identical with freezing hole, fills proportion in the temperature tube in warm hole
1.26~1.265 brine；
2) exempt from tube drawing to make and be bonded
Exempt to be uniformly coated with glue in tube drawing what is made, glue is then stamped on bonding plane is treated, it is suitable by tube drawing is exempted from
A direction and rotate a quarter circle insertion pipe fitting, glue is evenly distributed, after fully-inserted, fixed more than 25min；
3) decentralization of tube drawing is exempted from
To ensure that exempting from tube drawing smoothly transfers, and during decentralization, can borrow drilling jacking, uniform speed slow is extruded
It is put into freezing hole；
4) exempt from tube drawing and suppress test
Exempt from tube drawing decentralization end to carry out suppressing test；
5) installation of tube drawing goat's horn is exempted from
To ensure there are enough space connections into, liquid back pipe, exempting from the external section steel pipe of tube drawing ring flange, exempting to pull out freezing hole
The access set brine distributing ring by the way of in parallel, is easy to observation during freezing and controls the brine recycling of each freezing hole；
6) actively freeze
In tube drawing freezing process is exempted from, timing detects brine temp, brine flow and frozen soil wall spread scenarios, in time adjustment
Freezing system operating parameter, freezing system enters after working well actively to be freezed；
7) portal is cut
After solidification point, carry out portal and cut；
8) liquid supply pipe is extracted, driving originates
Portal extracts liquid supply pipe after cutting, development machine need not extract freezing pipe, and cutterhead normally directly appear by rotation.
In step 1), in order to ensure borehole accuracy, when 5m drills before drilling, drilling rod verticality is checked repeatedly, adjustment is bored
Seat in the plane is put, and using decompression drilling.
In step 1), in freezing pipe tripping in drilling before will first pipe arrangement, during bonding, glue should be smeared uniformly full.Lower good jelly
After tying pipe, with inclinometer deviational survey, and repetition measurement freezes hole depth；Carry out suppressing leak test after freezing length of tube and deflection qualification；Freeze
It is qualified for pressure testing to stablize 30 minutes unchanged persons of pressure between 0.7~1.0MPa for hole leak test pressure control.
The beneficial effects of the invention are as follows：
The export ＆ import of the present invention exempts from tube drawing consolidation by freezing construction method, exempts from tube drawing using for congelation, is tunneling
During machine export ＆ import, without carrying out pulling out freezing pipe operation, shield-tunneling construction directly can be carried out after frozen construction reaches requirement, from
And avoid in conventional tube drawing operation because tube drawing and caused by freezing hole rupture and cause construction safety problem.
Brief description of the drawings
Fig. 1 is development machine into hole schematic diagram；
Fig. 2 is that development machine is appeared schematic diagram；
Fig. 3 is to exempt from pipe drawing device schematic diagram；
Fig. 4 is to exempt from tube drawing position distribution schematic diagram；
The export ＆ import that Fig. 5 is the present invention exempts from tube drawing consolidation by freezing construction method flow chart.
Embodiment
Below in conjunction with the accompanying drawings with specific implementation, the present invention is further explained.
As shown in Figures 1 to 5, a kind of export ＆ import exempts from tube drawing consolidation by freezing construction method, be related to development machine 1, active well 2,
Building enclosure 3, tunnel 4, go along with sb. to guard him stabilization zone 5, consolidation by freezing area 6, exempt from tube drawing 7.
Exempt from tube drawing selection：According to the required macromolecule pvc pipe for freezing regional geology and temperature selection corresponding material.Exempt from tube drawing
Equipment, instrument needed for bonding：
Exempt from main material such as table 1 needed for tube drawing bonding
Table 1 exempts from tube drawing bonding material requested
| Classification | Exempt to pull out glue | Rag | Fine sandpaper | Identification pencil | Tape measure | Cutting machine |
| Quantity | It is some | It is some | It is some | It is some | It is some | It is some |
Exempt from tube drawing frozen construction specific implementation method：
1) freezing hole drilling is installed with frigo
1. before horizontal resistance force, it is necessary to Φ 121mm diamond drill machine first time perforates will be first used, creep into coring after 400mm,
Fixed orifice device and pressing device are installed, Φ 96mm diamond bits is then used instead, concrete chemise and enclosure wall is drilled through, then
Φ 89mm freezing pipes are changed as rod boring, until boring up to design hole depth.
2. in order to ensure borehole accuracy, perforate section drilling is crucial.When 5m drills before drilling, it is vertical drilling rod to be checked repeatedly
Degree, adjustment drilling machine position, and using decompression drilling.
3. before tying in pipe tripping in drilling will first pipe arrangement, during bonding, glue should be smeared uniformly full.Under after good freezing pipe, use
Inclinometer deviational survey, and repetition measurement freezes hole depth.Carry out suppressing leak test after freezing length of tube and deflection qualification.Freezing hole leak test pressure
It is qualified for pressure testing to stablize 30 minutes unchanged persons of pressure between 0.7~1.0MPa for control.
4. the tripping in liquid supply pipe in freezing pipe, then installation goes, circuit goat's horn and freezes pipe end-cap.
5. warm hole construction method and requirement are identical with freezing hole, proportion 1.26~1.265 is filled in lower good temperature tube
Brine.
2) tube drawing preliminary preparation is exempted from：
1., blanking：The length of the good pipeline to be cut of amount, carries out mark, and pipeline placement cutting machine is fixed (if not solid
It is fixed, it is necessary to assure cutting sheet is vertical with pipeline, cutting mouth it is neat), start cutting machine, the pipeline that breaks of imposing uniformity without examining individual cases；
2., chamfering：The pipeline just cut, it is necessary to cutting mouth is ground edging at the angle of angle grinder, to be carried out to pipe end
2-3 millimeters of chamfering, is scraped in bellmouth with glue during free bonding, avoids the pipeline caused by artificial construction wrong reduces bonding plane
Reveal bonding site；
3., mill flower：Two bonding planes are ground with sand paper and are spent, ensure the bonding quality of pipeline, according to line size come grind spend it is viscous
Junction length is 60-70mm, it is impossible to excessive or too small；
4., cleaning：Two bonding planes must use rag wiped clean, and old pipe fitting must use detergent cleaning bonding plane.
3) bonding of tube drawing is exempted from
1., glue is uniformly coated with pipe fitting, then stamp glue on bonding plane is treated, pipe end is about 1cm and needs
Thick some glue is uniformly applied, then at 1-4cm, equably applies one layer of thin glue；
2., will exempt from tube drawing along a direction slightly rotate a quarter circle insertion pipe fitting, glue is evenly distributed, completely
, it is necessary to which fixation is not less than 25min after insertion.
4) decentralization of tube drawing is exempted from
To ensure that exempting from tube drawing smoothly transfers, and during decentralization, can borrow drilling jacking, uniform speed slow is extruded
It is put into freezing hole, such as Fig. 4.
5) exempt from tube drawing and suppress test
Exempt from tube drawing decentralization to terminate to carry out suppressing test, suppress a connection mode such as Fig. 3：Pressure gauge 8,9. steel flange disk 9,
PVC ring flanges 10, steel pipe 11, Rubber washer 12, exempt from tube drawing 7.Under after good freezing pipe, with inclinometer deviational survey, and repetition measurement freezes hole depth
Degree.Carry out suppressing leak test after freezing length of tube and deflection qualification.Freezing hole leak test pressure is controlled between 0.7~1.0MPa, surely
The unchanged person of pressure is qualified for pressure testing within fixed 15 minutes.
6) installation of tube drawing goat's horn is exempted from
To ensure there are enough space connections into, liquid back pipe, exempt from the external section steel pipe of tube drawing ring flange in PVC,.PVC exempts from
Freezing hole access set brine distributing ring by the way of in parallel is pulled out, is easy to observation during freezing and controls the brine of each freezing hole to follow
Ring.
7) actively freeze
Equipment is debugged after installing and test running.In test running, each state such as pressure, temperature is adjusted at any time
Parameter, makes unit be run under the conditions of the technical parameter in relation to technological procedure and design requirement.In freezing process, timing detects
Brine temp, brine flow and frozen soil wall spread scenarios, adjust freezing system operating parameter if necessary, and freezing system works well
Enter afterwards and actively freeze.
Due to PVC, to exempt from tube drawing freezing pipe thermal conductivity factor small compared with traditional carbon steel, has one to solidification point freezing early stage
Fixed influence, early period, freeze-off time was longer, but freezed in the later stage to develop speed substantially consistent with carbon steel tubing.General PVC exempts to pull out
Freezing pipe freeze-off time 10 days longer than conventional duration of freezing or so, about needs 40-45 days altogether.
8) portal is cut
After solidification point, carry out portal and cut, the plastics for freezing liquid supply pipe use due to PVC are connected with steel flange disk
Connect, during portal is cut, concrete block inevitably pounds ring flange, easily cracks freezing pipe, causes to freeze brine loss,
Freezing efficiency is influenced, need to consider to carry out ring flange special protection in construction.
9) liquid supply pipe is extracted, driving originates
Portal extracts liquid supply pipe after cutting, and due to PVC easily brittle failures at low temperature, development machine need not extract freezing pipe cutterhead
Normal rotation is directly appeared, and is brought great convenience to bad ground shield starting.
Claims (3)
1. a kind of export ＆ import exempts from tube drawing consolidation by freezing construction method, it is characterised in that concretely comprises the following steps：
1）Freezing hole is crept into be installed with frigo
（1）Before horizontal frozen hole drilling, first using Φ 121mm diamond drill machine first time perforates, coring after 400mm, installation are crept into
Fixed orifice device and pressing device, then use Φ 96mm diamond bits instead, concrete chemise and enclosure wall are drilled through, then change Φ
89mm freezing pipes are as rod boring, until boring up to design hole depth；
（2）Load freezing pipe in freezing hole, and suppress leak test；
（3）Load liquid supply pipe in freezing pipe, then installation goes, circuit goat's horn and freezes pipe end-cap；
（4）Warm hole construction is carried out using the construction method identical with freezing hole, fills proportion 1.26 in the temperature tube in warm hole
~1.265 brine；
2）Exempt from tube drawing to make and be bonded
Exempt to be uniformly coated with glue in tube drawing what is made, glue is then stamped on bonding plane is treated, tube drawing will be exempted from along one
A direction rotates a quarter circle insertion pipe fitting, glue is evenly distributed, after fully-inserted, fixed more than 25min；
3）Exempt from the decentralization of tube drawing
To ensure that exempting from tube drawing smoothly transfers, and during decentralization, can borrow drilling jacking, uniform speed slow is squeezed into
Freezing hole；
4）Exempt from tube drawing and suppress test
Exempt from tube drawing decentralization end to carry out suppressing test；
5）Exempt from the installation of tube drawing goat's horn
To ensure there are enough space connections into, liquid back pipe, exempting from the external section steel pipe of tube drawing ring flange, exempting to pull out freezing hole use
Mode access set brine distributing ring in parallel, is easy to observation during freezing and controls the brine recycling of each freezing hole；
6）Actively freeze
In tube drawing freezing process is exempted from, timing detects brine temp, brine flow and frozen soil wall spread scenarios, and adjustment in time is freezed
System operational parameters, freezing system enters after working well actively to be freezed；
7）Portal is cut
After solidification point, carry out portal and cut；
8）Liquid supply pipe is extracted, driving originates
Portal extracts liquid supply pipe after cutting, development machine need not extract freezing pipe, and cutterhead normally directly appear by rotation.
2. export ＆ import according to claim 1 exempts from tube drawing consolidation by freezing construction method, it is characterised in that：Step 1）In, it is
Guarantee borehole accuracy, when 5m drills before drilling, will check drilling rod verticality, adjustment drilling machine position repeatedly, and bore using decompression
Into.
3. export ＆ import according to claim 1 exempts from tube drawing consolidation by freezing construction method, it is characterised in that：Step 1）In, freeze
Before tying in pipe tripping in drilling will first pipe arrangement, during bonding, glue should smear it is uniformly full, after lower good freezing pipe, with inclinometer deviational survey,
And repetition measurement freezes hole depth；Carry out suppressing leak test after freezing length of tube and deflection qualification；The control of freezing hole leak test pressure 0.7~
Between 1.0MPa, it is qualified for pressure testing to stablize 30 minutes unchanged persons of pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711365446.4A CN108005663A (en) | 2017-12-18 | 2017-12-18 | Export ＆ import exempts from tube drawing consolidation by freezing construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711365446.4A CN108005663A (en) | 2017-12-18 | 2017-12-18 | Export ＆ import exempts from tube drawing consolidation by freezing construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108005663A true CN108005663A (en) | 2018-05-08 |
Family
ID=62059631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711365446.4A Pending CN108005663A (en) | 2017-12-18 | 2017-12-18 | Export ＆ import exempts from tube drawing consolidation by freezing construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108005663A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843336A (en) * | 2018-07-02 | 2018-11-20 | 中国铁建重工集团有限公司 | Development machine, development machine cutterhead and cutter replacing method |
| CN110030007A (en) * | 2019-05-06 | 2019-07-19 | 济南城建集团有限公司 | Shield horizontal freezing receives construction method |
| CN112502715A (en) * | 2020-11-08 | 2021-03-16 | 上海市隧道工程轨道交通设计研究院 | Temporary plugging and reinforcing method for end of shield tunnel |
| CN113279714A (en) * | 2021-06-15 | 2021-08-20 | 北京中煤矿山工程有限公司 | Device and process for pulling out drilling rod of anti-sand-gushing water-falling freezing pipe in subway tunnel construction |
| CN115306407A (en) * | 2022-09-13 | 2022-11-08 | 中铁一局集团有限公司 | Method for shield launching by adopting vertical liquid nitrogen freezing reinforcement and steel sleeve |
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| CN101775796A (en) * | 2009-11-30 | 2010-07-14 | 北京中煤矿山工程有限公司 | Unplugging-free freezer |
| CN103590835A (en) * | 2013-11-28 | 2014-02-19 | 北京中煤矿山工程有限公司 | PVC freezing pipe for shield tunneling freeze-consolidation |
| CN104695964A (en) * | 2013-12-04 | 2015-06-10 | 宏润建设集团股份有限公司 | Subway shield tunnel freeze entering method |
| CN104790961A (en) * | 2015-04-27 | 2015-07-22 | 海南大学 | Vertical cup type freezing reinforcement structure and method at shield tunnel end |
| CN105952458A (en) * | 2016-03-29 | 2016-09-21 | 中铁时代建筑设计院有限公司 | Shield tunnel end semispherical freezing wall reinforcement structure and construction method thereof |
| CN206495675U (en) * | 2017-02-16 | 2017-09-15 | 万甸甸 | A kind of shield export ＆ import consolidation by freezing PVC freezing pipes |
-
2017
- 2017-12-18 CN CN201711365446.4A patent/CN108005663A/en active Pending
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| CN101775796A (en) * | 2009-11-30 | 2010-07-14 | 北京中煤矿山工程有限公司 | Unplugging-free freezer |
| CN103590835A (en) * | 2013-11-28 | 2014-02-19 | 北京中煤矿山工程有限公司 | PVC freezing pipe for shield tunneling freeze-consolidation |
| CN104695964A (en) * | 2013-12-04 | 2015-06-10 | 宏润建设集团股份有限公司 | Subway shield tunnel freeze entering method |
| CN104790961A (en) * | 2015-04-27 | 2015-07-22 | 海南大学 | Vertical cup type freezing reinforcement structure and method at shield tunnel end |
| CN105952458A (en) * | 2016-03-29 | 2016-09-21 | 中铁时代建筑设计院有限公司 | Shield tunnel end semispherical freezing wall reinforcement structure and construction method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843336A (en) * | 2018-07-02 | 2018-11-20 | 中国铁建重工集团有限公司 | Development machine, development machine cutterhead and cutter replacing method |
| CN108843336B (en) * | 2018-07-02 | 2024-02-02 | 中国铁建重工集团股份有限公司 | Heading machine, heading machine cutterhead and cutter changing method |
| CN110030007A (en) * | 2019-05-06 | 2019-07-19 | 济南城建集团有限公司 | Shield horizontal freezing receives construction method |
| CN112502715A (en) * | 2020-11-08 | 2021-03-16 | 上海市隧道工程轨道交通设计研究院 | Temporary plugging and reinforcing method for end of shield tunnel |
| CN113279714A (en) * | 2021-06-15 | 2021-08-20 | 北京中煤矿山工程有限公司 | Device and process for pulling out drilling rod of anti-sand-gushing water-falling freezing pipe in subway tunnel construction |
| CN115306407A (en) * | 2022-09-13 | 2022-11-08 | 中铁一局集团有限公司 | Method for shield launching by adopting vertical liquid nitrogen freezing reinforcement and steel sleeve |
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