CN108130900A - Form the vertical energy-saving frigo and method of annular frost wall - Google Patents
Form the vertical energy-saving frigo and method of annular frost wall Download PDFInfo
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- CN108130900A CN108130900A CN201711430824.2A CN201711430824A CN108130900A CN 108130900 A CN108130900 A CN 108130900A CN 201711430824 A CN201711430824 A CN 201711430824A CN 108130900 A CN108130900 A CN 108130900A
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- 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
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
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- Agronomy & Crop Science (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a kind of vertical energy-saving frigos for forming annular frost wall, including internal layer freezing pipe and outer layer pressure-bearing pipe, the internal layer freezing pipe includes isolation section freezing pipe and non-isolation section freezing pipe, and the caliber of the isolation section freezing pipe is less than the caliber of non-isolation section freezing pipe；It is connected between the isolation section freezing pipe and non-isolation section freezing pipe by reducer union, package is welded with the first outer box cupling outside the reducer union；The outer surface of the isolation section freezing pipe is laid with first thermal insulation layer, and the first outer box cupling is soldered to the outer layer pressure-bearing pipe；The non-isolation section freezing pipe is laid in annular frozen region, the isolation section freezing pipe be laid in the annular frozen region ring is outer and ring in, so as to form annular frost wall.The present invention can both realize that excavating structure structure bottom freezes, and in turn avoid treating that excavated section freezes real, that is, form annular frost wall, not only realize energy saving, also reduce tunneling boring and freeze that frozen swell and melt settlement is caused to endanger.
Description
Technical field
The present invention relates to a kind of vertical energy-saving frigos and method for forming annular frost wall.
Background technology
Freezing process is artificial Refrigeration Technique, is developed by weather freezing.This stratum consolidation special constructional technique is wide
Generally applied in the mine of many countries of the world, tunnel, subway and the construction of related municipal works, become underground engineering and apply
One of important engineering method of work.
Freezing process is the Frozen Soil Cylinder for improving soil strength by establishing one in the earth formation, closing water proof, is carried for sinking shaft
For the special engineering method of a safe temporary support.It is reasonable that domestic frozen construction is selected according to the shape of underground structure, expanding design
Freeze design scheme.At present, coal mine shaft lining freezing engineering generally use single-turn or multi-turn hole vertical frozen mode；Coal mine inclined shaft
Freezing engineering generally use sectional vertical hole partial freezing scheme；Municipal service channel or tunnel freezing engineering generally use are horizontal
Project of shaft freezing.When being constructed using vertical frozen scheme, with the increasing of the depth of freezing, frost wall need to resist using Water And Earth Pressures as
Main external load constantly increases.Usually using the Frozen wall thickness of key-course position as according to carry out freeze design, other layer of position or
Freezing to bring and freeze the loss of cold without freeze section, does not consider the heat insulation of excavated section frigo, so as to increase
The excavation lining cutting difficulty of excavation section, increases the environmental effect caused by the increase of frozen soil amount.
According to field working conditions, it is sometimes necessary to horizontal or near horizontal underground structure is reinforced using vertical frozen, generally
It is that vertical frozen hole is set by ground, full hall freezes, and by proposed structures and periphery freezing soil gelation soil block body, then is freezing
It excavates and constructs in soil block body.This kind of freezing method during excavation, tunneling boring to excavate frozen soil, and it is big to excavate difficulty, long in time limit, causes
Additional consumption；The soil body is excavated simultaneously and freezes real, objectively also results in cold consumption, the wasting of resources, not environmentally；The full hall of large volume freezes
Knot, is also easy to produce larger frozen swell and melt settlement, jeopardizes engineering safety.
Therefore a kind of energy-saving vertical frozen device of research and annular frost wall forming method are very necessary.
Horizontal structures consolidation by freezing is carried out using vertical frozen hole, according to freeze design theory, in proposed building or
Structures periphery forms the certain thickness frost wall for surrounding shape, proposed structures top and both sides may be used directly from
Surface deployment is vertical or nearly vertical freezing hole carries out freezing to realize, bottom can only by be routed through the vertical of inside configuration or
Nearly vertical frozen hole realization, but while realizing that structures bottom brine recycling freezes, it also will inside configuration region be excavated
Freeze real.
Invention content
Present invention aim to address current long range curved tunnel construction level freezing drill bore constructional difficulties, and to freezing
Swollen thaw collapse requires the technical issues of high.
For realization more than goal of the invention, on the one hand, the present invention provides a kind of vertical energy-saving jelly for forming annular frost wall
Device is tied, including internal layer freezing pipe and outer layer pressure-bearing pipe, the internal layer freezing pipe includes isolation section freezing pipe and non-isolation section is freezed
Pipe, the caliber of the isolation section freezing pipe are less than the caliber of non-isolation section freezing pipe；
It is connected between the isolation section freezing pipe and non-isolation section freezing pipe by reducer union, outside the reducer union
Package is welded with the first outer box cupling；
The outer surface of the isolation section freezing pipe is laid with first thermal insulation layer, and the first outer box cupling is soldered to the outer layer
Pressure-bearing pipe；
The non-isolation section freezing pipe is laid in annular frozen region, and the isolation section freezing pipe annular that is laid in is frozen
Outside the ring of tie region and in ring, so as to form annular frost wall.
Further, described reducer union one end is mounted on by box cupling in first in the isolation section freezing pipe, described
The reducer union other end is mounted on by box cupling in second in the non-isolation section freezing pipe, the end of the isolation section freezing pipe
Inner wall offers the first groove, and the end inner wall of the non-isolation section freezing pipe offers the second groove, in first groove
Box cupling in described first is set, box cupling in setting described second in second groove, box cupling and second inscribed in described first
Hoop welds together respectively with the reducer union.
Further, the first thermal insulation layer is polythene material.
Further, the outer layer pressure-bearing pipe is seamless steel pipe.
On the other hand, the present invention provides a kind of method for forming annular frost wall by vertical energy-saving frigo, including
Following steps：
(1) pipe of the caliber, wherein isolation section internal layer freezing pipe of isolation section and non-isolation section internal layer freezing pipe is determined respectively
Diameter is less than the caliber of non-isolation section internal layer freezing pipe, passes through change between isolation section internal layer freezing pipe and non-isolation section internal layer freezing pipe
Drive connector connects；
(2) insulation thickness is determined；
(3) seamless steel pipe is chosen as outer layer pressure-bearing pipe；
(4) isolation section internal layer freezing pipe is numbered, then insulating layer material is entangled in the described heat-insulated of number with adhesive tape
Section internal layer freezes pipe surface, to ensure that the insulating layer material closely connects with the isolation section internal layer freezing pipe during entanglement
It touches, after the insulating layer material tangles, freezes the outer layer pressure-bearing pipe on tube outer surface set in the internal layer；
(5) treating that excavated section surrounding opens up freezing hole, wherein in the annular region for treating excavated section surrounding
Non- isolation section internal layer freezing pipe is arranged in freezing hole, isolation section is arranged in the freezing hole outside the ring of the annular region and in ring
Internal layer freezing pipe；
(6) inject chilled brine in the internal layer freezing pipe, wherein the soil layer around isolation section internal layer freezing pipe not by
Freeze, the soil layer around non-isolation section internal layer freezing pipe is frozen, so as to form annular frost wall in the annular region.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention, which can both realize, excavates freezing for structure structure bottom, in turn avoids to treat in fact, i.e., excavated section freezes
Annular frost wall is formed, not only realizes energy saving, tunneling boring is also reduced and freezes that frozen swell and melt settlement is caused to endanger, realize and efficiently excavate, most
It realizes and is cooperateed with the close friend of surrounding enviroment eventually.
Description of the drawings
Fig. 1 is that the isolation section of frigo of the present invention freezes the radial cross-section of tube portion；
Fig. 2 is that the isolation section of frigo of the present invention freezes the axial sectional view of tube portion；
The axial direction that Fig. 3 freezes tube portion for isolation section after two adjacent insulation section freezing pipes welding of frigo of the present invention is cutd open
View；
Fig. 4 is on the basis of Fig. 3, is thermally shielded at welding point and the axial sectional view after the welding of outer box cupling；
Fig. 5 is that annular frost wall forms schematic diagram；
Fig. 6 is the schematic diagram that isolation section freezing pipe is connected with non-isolation section freezing pipe by reducer union.
In figure：Internal layer freezing pipe 1；First thermal insulation layer 2；Outer layer pressure-bearing pipe 3；The bored plate 4 of sealing annular；First weld seam 5；Second
Thermal insulation layer 6；Second outer box cupling 7；Reducer union 8；Box cupling 9 in first；Box cupling 10 in second；Second weld seam 11；Third weld seam 12；
Annular frost wall outer boundary 13；Annular frost wall inner boundary 14；Non- isolation section freezing pipe 15；Isolation section freezing pipe 16.
Specific embodiment
The invention will be further described in the following with reference to the drawings and specific embodiments.
As shown in figures 1 to 6, the vertical energy-saving frigo of the annular frost wall of formation of the invention, including internal layer freezing pipe 1
With outer layer pressure-bearing pipe 3, internal layer freezing pipe 1 includes isolation section freezing pipe 16 and non-isolation section freezing pipe 15, isolation section freezing pipe 16
Caliber be less than non-isolation section freezing pipe 15 caliber；
It is connected by reducer union 8 between isolation section freezing pipe 16 and non-isolation section freezing pipe 15, is wrapped outside reducer union
It wraps up in and is welded with the first outer box cupling (not shown)；
The outer surface of isolation section freezing pipe is laid with first thermal insulation layer 2, and the first outer box cupling is soldered to outer layer pressure-bearing pipe 3；Outside
Annular space between layer pressure-bearing pipe 3 and internal layer freezing pipe 1 is by sealing bored 4 welded seal of plate of annular；
Non- isolation section freezing pipe 15 is laid in the annular frozen region between outer boundary 13 and inner boundary 14, and isolation section is freezed
Pipe 16 is laid in the ring outer (i.e. other than outer boundary 13) and ring of annular frozen region (i.e. within inner boundary 14), so as to form ring
Shape frost wall.Wherein, as shown in Figure 3-4, isolation section freezing pipe 16 is welded by multistage, passes through a circle the between adjacent two sections
One weld seam 5 links together, and 16 outer surface of isolation section freezing pipe of the first weld seam 5 or so is enclosed with second thermal insulation layer 6, second every
6 outer surface of thermosphere passes through the second outer box cupling 7 and 3 welded seal of outer layer pressure-bearing pipe.
Preferably, 8 one end of reducer union is mounted on by box cupling 9 in first in isolation section freezing pipe, and reducer union is another
End passes through box cupling in second and is mounted in non-isolation section freezing pipe, and the end inner wall of isolation section freezing pipe offers the first groove,
The end inner wall of non-isolation section freezing pipe offers the second groove, and box cupling in first is set in the first groove, is set in the second groove
Put box cupling in second, box cupling welds together respectively with reducer union in box cupling and second in first.
Seamless steel with isolation section freezing pipe 16 for specification φ 89*8 (outer diameter 89mm, wall thickness 8mm, then internal diameter is 73mm)
Pipe, 133*4 outer layer pressure-bearing pipes, non-isolation section freezing pipe 15 are the seamless steel pipe of specification φ 133*8 (outer diameter 133mm, wall thickness 8mm)
For both illustrate the technique being attached by reducer union 8, as shown in Figure 6：
(1) (do not show in figure for placing the first groove of box cupling 9 in first in φ 89*8 seamless steel pipes end inwall processing
Go out), the first groove long 50mm, groove depth 0.5mm, after processing the first groove, 16 internal diameter of isolation section freezing pipe becomes 74mm.For convenience
Welding and guarantee welding quality, 63 ° of grooves are set in 16 end lateral wall 6mm thickness of isolation section freezing pipe, interior for convenience to straight
Side wall 2mm thickness does not set groove.Box cupling 9 is using the processing of φ 76*5 seamless steel pipes, length 115mm, both ends 50mm long in first
The lateral wall excision 1mm thickness of degree, after excision, 9 both ends outer diameter of box cupling becomes 74mm in first, just may be inserted into isolation section jelly
In the first groove for tying pipe 16.Width 2mm, the rib of thickness 1.5mm, rib and isolation section freezing pipe 16 are stayed in 9 middle part of box cupling in first
End face and reducer union φ 89*8 ends end face between be respectively formed first dovetail groove.
(2) (do not show in figure for placing the second groove of box cupling 10 in second in φ 133*8 seamless steel pipes end machining
Go out), the second groove long 50mm, groove depth 0.5mm, after processing the second groove, non-isolation section freezes bore and becomes 118mm, for side
Just it welds and ensures welding quality, freeze tube end lateral wall 6mm thickness in isolation section and set 63 ° of grooves, it is interior for convenience to straight
Side wall 2mm thickness does not set groove.Box cupling 10 is using the processing of φ 120*5 seamless steel pipes, length 115mm, both ends 50mm in second
Length lateral wall excision 1mm thickness, after excision, 10 both ends outer diameter of box cupling becomes 118mm in second, just may be inserted into not every
In second groove of hot arc freezing pipe 15.Width 2mm, the rib of thickness 1.5mm, rib and non-isolation section are stayed in 10 middle part of box cupling in second
Second dovetail groove is respectively formed between the end face of freezing pipe 15 and the end face at reducer union φ 133*8 ends.
(3) processing φ 89*8 become φ 133*8 seamless steel pipes reducer union 8, reducer union 8 long 500mm, wherein φ 89*8 sections
133*8 sections of long 150mm of long 150mm, φ become path length 200mm.
(4) φ 89*8 isolation sections freezing pipe 16 and reducing φ 89*8 ends are welded by box cupling 9 in first, the box cupling in first
9 rib is welded in the first dovetail groove between φ 89*8 isolation sections freezing pipe 16 and reducing φ 89*8 ends respectively, is formed
One the second weld seam 11 of circle；
φ 133*8 non-insulated freezing pipe 15 and φ 133*8 reducings ends are welded by box cupling 10 in second, the box cupling in second
10 rib is welded in the second dovetail groove between φ 133*8 non-insulated sections freezing pipe 15 and reducing φ 133*8 ends respectively,
Form a circle third weld seam 12.It is welded by dovetail groove, there are three faces for welding plane tool, fully ensure that welding quality.
(5) 8 outside of reducer union is wrapped up with being welded by the first outer box cupling (not shown) that specification is φ 133*4,
Avoid influence of the stratum frost heave to reducer union 8.
Preferably, first thermal insulation layer 2 and second thermal insulation layer 6 are polythene material.
Preferably, outer layer pressure-bearing pipe 3 is seamless steel pipe.
The method for forming annular frost wall by vertical energy-saving frigo of the present invention, includes the following steps：(1)
The caliber of the caliber, wherein isolation section internal layer freezing pipe of isolation section and non-isolation section freezing pipe is determined respectively
Less than the caliber of non-isolation section internal layer freezing pipe, isolation section internal layer freezing pipe freezes with non-isolation section internal layer
It is connected between pipe by reducer union；
(2) insulation thickness is determined；
(3) seamless steel pipe is chosen as outer layer pressure-bearing pipe；
(4) isolation section internal layer freezing pipe is numbered, then insulating layer material is entangled in adhesive tape in the isolation section of number
Layer freezes pipe surface, to ensure that insulating layer material is in close contact with isolation section internal layer freezing pipe during entanglement, work as thermal insulation layer
After material tangles, the outer layer pressure-bearing pipe on the set of internal layer freezing pipe outer surface；
(5) treating that excavated section surrounding opens up freezing hole, wherein in the annular region for treating excavated section surrounding
Non- isolation section internal layer freezing pipe is arranged in freezing hole, isolation section internal layer is arranged in the freezing hole outside the ring of annular region and in ring
Freezing pipe；
(6) chilled brine is injected in internal layer freezing pipe, the wherein soil layer around isolation section internal layer freezing pipe is not frozen,
Soil layer around non-isolation section internal layer freezing pipe is frozen, so as to form annular frost wall in annular region.
Specifically, it is just designed and constructs according to following flow：
(1) isolation section freezing pipe is heat-insulated
The heat exchange of cryogenic media and ambient enviroment is reduced, freezes pipe surface in invalid freeze section internal layer with appropriate heat-insulated
Structure covers one layer of smaller heat-barrier material of thermal conductivity factor, and to reducing loss of refrigeration capacity, the freezing efficiency of freeze section and reduction are freezed
Cost is of great significance.
(1) according to design requirement, the size in the aperture of internal layer freezing pipe is determined；
(2) insulation thickness is calculated：According to barrel surface thermal insulation layer economic thickness calculation formula, with reference to freeze design and work
Range request substitutes into parameter, calculates the thickness of thermal insulation layer：
In formula：
δ-insulation thickness, unit are (m)；
fn- caloric value, unit are member per giggio (member/GJ)；
λ-moulded insulation thermal conductivity should take the thermal conductivity under packing density for soft material, single
Position is watt every meter of Kelvin [W/ (m.K)]；
τ-year run time, unit hour (h)；
The hull-skin temperature of T-equipment and pipeline, unit are Kelvin's (degree Celsius) [K (DEG C)]；
n- environment temperature, unit are Kelvin's (degree Celsius) [K (DEG C)]；
Pi- heat insulation structural unit price, unit are first every cubic metre of (member/m3)；
S-insulation contractors investment loan year absorption rate bears interest by multiple profit
I-Annual Percentage Rate (composition rate)；
N-interest-bearing year；
α-thermal insulation layer outer surface and the coefficient of heat transfer of air, unit are watt of every square metre Kelvin [W/ (㎡ .K)]
(3) the features such as selection of thermal insulation layer, mixed economy of the present invention, performance, technique, chooses vinyon material and replaces
Traditional vacuum heat-insulating layer and polyurethane foams.
(4) selection of outer layer pressure-bearing pipe：The pressure-bearing pipe of traditional handicraft mainly selects polyethylene pipe, this kind of tubing has low lead
Hot, light characteristic, but its material is rigidly poor, will appear deformation, and polyethylene pipe is made in larger Water And Earth Pressures
Can not be tightly connected for pressure-bearing pipe, therefore the water in soil layer can be caused to enter thermal insulation layer, with the extension of time finally lose every
The effect of heat.This method is selected using seamless steel pipe as outer layer pressure-bearing pipe, the Water And Earth Pressures that can be effective against in soil layer, and nothing
Seam steel pipe can be tightly connected, and stratum Zhong Shui cannot be introduced into thermal insulation layer, and heat-blocking action will not fail.
(5) construction of thermal insulation layer：First according to the design of freezing hole, internal layer freezing pipe piping is carried out, it is heat-insulated to needing
Freezing pipe is numbered, next vinyon material is entangled in adhesive tape freezes pipe surface, to ensure during entanglement every
Hot material and freezing pipe closely connect, and after heat-barrier material tangles, are inserted in outer layer pressure-bearing pipe.
Preferably, the sealing of thermal insulation layer is divided into two steps, first, passing through sealing between outer layer pressure-bearing pipe and isolation section freezing pipe
Bored 4 welded seal of plate of annular, second is that after heat-insulated at freezing pipe welding junction, carries out welded seal, it is ensured that freezed with outer box cupling
Cheng Zhong, thermal insulation layer will not intake, heat-insulated to fail.
Preferably, after freezing pipe welds, when vinyl tube becomes entangled in soldering opening, the interfaces such as need have cooled down
Finish, prevent from damaging material, influence heat insulation.
(2) connection of isolation section freezing pipe and non-insulated section freezing pipe
In freezing engineering, frigo be securely and reliably it is very crucial, be especially embedded in the freezing pipe of underground, rupture
Afterwards, brine can be caused to be lost in stratum, causes the reduction of frozen soil freezing point, frozen soil strength weakens or even can cause to freeze failure.Freeze
Tying pipe can be brittle under low-temperature condition, while is influenced in freezing process by frost heave, and freezing pipe is acted on by shearing force, especially
It is by larger shearing force in frozen region and area of insulation junction, therefore reliably connects particularly important.
Jointing is connected using interior box cupling, internal box cupling and the both ends progress Precision Machining for intending connection, by different tube diameters
Connect, docking location is again using being welded to connect.It has illustrated above specific Joining Technology detailed description.
(3) frigo is transferred to freezing hole
Non- isolation section freezing pipe 15 is laid in the annular frozen region between outer boundary 13 and inner boundary 14, and isolation section is freezed
Pipe 16 is laid in the ring outer (i.e. other than outer boundary 13) and ring of annular frozen region (i.e. within inner boundary 14).
(4) chilled brine is injected in internal layer freezing pipe, forms annular frost wall
Soil layer wherein around isolation section internal layer freezing pipe is not frozen, the soil layer quilt around non-isolation section internal layer freezing pipe
Freeze, the annular frozen region between outer boundary 13 and inner boundary 14 forms annular frost wall.
The present invention on the basis of existing freeze design, using more economical, light, effective vinyon material into
Row is heat-insulated, original polyethylene pipe is replaced to be solved as outer layer pressure-bearing pipe instead of polyurethane foams, while using seamless steel pipe
The flattening deformation and sealing problem that pressure-bearing pipe occurs in deeper stratum, it is ensured that thermal insulation layer will not become in entire freezing process
Shape and water inlet efficiently solve the problems, such as original heat-insulated failure of heat-insulated freezing pipe, so as to effectively reduce the frost heave on stratum
And the problem of surrounding enviroment are interfered.
In addition to the embodiments described above, the present invention can also have other embodiment, all to use equivalent substitution or equivalent transformation
The technical solution of formation, all falls in protection scope of the present invention.
Claims (5)
1. form the vertical energy-saving frigo of annular frost wall, which is characterized in that including internal layer freezing pipe and outer layer pressure-bearing pipe,
The internal layer freezing pipe includes isolation section freezing pipe and non-isolation section freezing pipe, the caliber of the isolation section freezing pipe less than not every
The caliber of hot arc freezing pipe；
It is connected by reducer union between the isolation section freezing pipe and non-isolation section freezing pipe, is wrapped up outside the reducer union
It is welded with the first outer box cupling；
The outer surface of the isolation section freezing pipe is laid with first thermal insulation layer, and the first outer box cupling is soldered to the outer layer pressure-bearing
Pipe；
The non-isolation section freezing pipe is laid in annular frozen region, and the isolation section freezing pipe is laid in the annular freezing zone
Outside the ring in domain and in ring, so as to form annular frost wall.
2. the vertical energy-saving frigo as described in claim 1 for forming annular frost wall, which is characterized in that the reducing connects
First end is mounted on by box cupling in first in the isolation section freezing pipe, and the reducer union other end passes through box cupling in second
In the non-isolation section freezing pipe, the end inner wall of the isolation section freezing pipe offers the first groove, it is described not every
The end inner wall of hot arc freezing pipe offers the second groove, box cupling in setting described first in first groove, and described second
Box cupling in setting described second in groove, box cupling is welded on one with the reducer union respectively in box cupling and second in described first
It rises.
3. the vertical energy-saving frigo as described in claim 1 for forming annular frost wall, which is characterized in that the thermal insulation layer
For polythene material.
4. the vertical energy-saving frigo as described in claim 1 for forming annular frost wall, which is characterized in that the outer layer is held
Pressure pipe is seamless steel pipe.
5. the method that annular frost wall is formed by vertical energy-saving frigo, which is characterized in that include the following steps：
(1) caliber of isolation section and non-isolation section internal layer freezing pipe is determined respectively, and the caliber of wherein isolation section internal layer freezing pipe is small
It is connect between the caliber of non-isolation section internal layer freezing pipe, isolation section internal layer freezing pipe and non-isolation section internal layer freezing pipe by reducing
Head connection；
(2) insulation thickness is determined；
(3) seamless steel pipe is chosen as outer layer pressure-bearing pipe；
(4) isolation section internal layer freezing pipe is numbered, then insulating layer material is entangled in adhesive tape in the isolation section of number
Layer freezes pipe surface, to ensure that the insulating layer material is in close contact with the isolation section internal layer freezing pipe during entanglement,
After the insulating layer material tangles, freeze the outer layer pressure-bearing pipe on tube outer surface set in the internal layer；
(5) treating that excavated section surrounding opens up freezing hole, wherein freezing in the annular region for treating excavated section surrounding
Non- isolation section internal layer freezing pipe is arranged in hole, isolation section internal layer is arranged in the freezing hole outside the ring of the annular region and in ring
Freezing pipe；
(6) chilled brine is injected in the internal layer freezing pipe, the wherein soil layer around isolation section internal layer freezing pipe is not frozen,
Soil layer around non-isolation section internal layer freezing pipe is frozen, so as to form annular frost wall in the annular region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711430824.2A CN108130900B (en) | 2017-12-26 | 2017-12-26 | Vertical energy-saving freezer and method for forming annular freezing wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711430824.2A CN108130900B (en) | 2017-12-26 | 2017-12-26 | Vertical energy-saving freezer and method for forming annular freezing wall |
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| Publication Number | Publication Date |
|---|---|
| CN108130900A true CN108130900A (en) | 2018-06-08 |
| CN108130900B CN108130900B (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711430824.2A Expired - Fee Related CN108130900B (en) | 2017-12-26 | 2017-12-26 | Vertical energy-saving freezer and method for forming annular freezing wall |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06173242A (en) * | 1992-12-03 | 1994-06-21 | Chem Gurauto Kk | Freezing construction method and freezing pipe |
| CN201077982Y (en) * | 2007-09-11 | 2008-06-25 | 兖矿新陆建设发展有限公司 | Partial freezing device |
| CN103133821A (en) * | 2012-12-11 | 2013-06-05 | 河南煤炭建设集团有限责任公司 | Freezing pipe heat insulation device |
| CN103334757A (en) * | 2013-06-11 | 2013-10-02 | 中国矿业大学(北京) | Freezing pipe, frigo, and method of excavating rock-soil by adopting freezing method |
| CN106894819A (en) * | 2017-04-07 | 2017-06-27 | 淄博王煤矿业有限公司 | Vertical shaft difference freezing plant |
-
2017
- 2017-12-26 CN CN201711430824.2A patent/CN108130900B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06173242A (en) * | 1992-12-03 | 1994-06-21 | Chem Gurauto Kk | Freezing construction method and freezing pipe |
| CN201077982Y (en) * | 2007-09-11 | 2008-06-25 | 兖矿新陆建设发展有限公司 | Partial freezing device |
| CN103133821A (en) * | 2012-12-11 | 2013-06-05 | 河南煤炭建设集团有限责任公司 | Freezing pipe heat insulation device |
| CN103334757A (en) * | 2013-06-11 | 2013-10-02 | 中国矿业大学(北京) | Freezing pipe, frigo, and method of excavating rock-soil by adopting freezing method |
| CN106894819A (en) * | 2017-04-07 | 2017-06-27 | 淄博王煤矿业有限公司 | Vertical shaft difference freezing plant |
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| Publication number | Publication date |
|---|---|
| CN108130900B (en) | 2020-08-04 |
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