CN114165263A - Steel pipe ring piece for realizing rapid freezing of stratum and processing method thereof - Google Patents
Steel pipe ring piece for realizing rapid freezing of stratum and processing method thereof Download PDFInfo
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- CN114165263A CN114165263A CN202111307185.7A CN202111307185A CN114165263A CN 114165263 A CN114165263 A CN 114165263A CN 202111307185 A CN202111307185 A CN 202111307185A CN 114165263 A CN114165263 A CN 114165263A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 182
- 239000010959 steel Substances 0.000 title claims abstract description 182
- 238000007710 freezing Methods 0.000 title claims abstract description 53
- 230000008014 freezing Effects 0.000 title claims abstract description 53
- 238000003672 processing method Methods 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 105
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 239000012530 fluid Substances 0.000 claims abstract description 23
- 238000004891 communication Methods 0.000 claims abstract description 12
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 20
- 238000003466 welding Methods 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims description 16
- 238000012545 processing Methods 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 238000013461 design Methods 0.000 claims description 10
- 238000007689 inspection Methods 0.000 claims description 7
- 238000012360 testing method Methods 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 11
- 238000011161 development Methods 0.000 abstract description 9
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 239000003507 refrigerant Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 230000008569 process Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 239000004519 grease Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 229910001610 cryolite Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/155—Laggings made of strips, slats, slabs or sheet piles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/20—Metals
- G01N33/204—Structure thereof, e.g. crystal structure
- G01N33/2045—Defects
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- Crystallography & Structural Chemistry (AREA)
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- Soil Sciences (AREA)
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Abstract
The invention discloses a steel pipe ring piece for realizing rapid freezing of a stratum and a processing method thereof, and belongs to the technical field of tunnel construction. The steel pipe ring pieces comprise a plurality of arc-shaped steel pipe pieces which are sequentially connected to form the steel pipe ring pieces; the rib plates are fixedly connected to the inner surface of the arc-shaped steel pipe sheet in a mode of being perpendicular to the inner surface of the arc-shaped steel pipe sheet, the length direction of the rib plates is arranged along the width direction of the arc-shaped steel pipe sheet, a plurality of rib plates are arranged at intervals, and rib plate cavities are formed between every two adjacent rib plates; further comprising: the communication holes are arranged on each rib plate in a penetrating way and are used for communicating the adjacent rib plate cavities; the sealing plate is used for sealing the cavity of each rib plate; the water inlet interface is communicated with the rib plate cavity and is used for injecting refrigerating fluid into the rib plate cavity; and the water outlet connector is communicated with the rib plate cavity and is used for leading out refrigerating fluid in the rib plate cavity. The invention can greatly increase the contact area of the refrigerating fluid and the arc-shaped steel pipe sheet, has higher cold quantity transmission efficiency, can realize the rapid development of the frozen wall, and increases the development thickness of the frozen wall.
Description
Technical Field
The invention belongs to the technical field of tunnel construction, and particularly relates to a steel pipe ring piece for realizing rapid freezing of a stratum and a processing method thereof.
Background
With the rapid development of urban rail transit and river-crossing tunnel engineering, a shield construction method is widely applied, when a shield machine tunnels in a long distance or passes through a sandy gravel stratum or turns in a small radius, great abrasion is generated on a shield tail steel wire brush, the water-resisting property of the shield tail steel wire brush is affected, and the shield tail steel wire brush needs to be replaced in time at the moment so as to ensure the construction safety.
The method for replacing the shield tail steel wire brush commonly used at present is a stratum consolidation method, and recently, related units develop methods for replacing the shield tail steel wire brush by a freezing method, but all the methods have obvious defects.
The strengthening effect of the stratum strengthening method is difficult to ensure, the stratum applicability is small, and effective strengthening is difficult to carry out on a water-rich sand layer; in the existing freezing method, a freezing pipe is welded in a customized steel pipe sheet, and refrigerating fluid in the freezing pipe transfers cold to a stratum through the steel pipe sheet, so that the stratum is frozen.
At present, the contact area of a freezing pipe and a steel pipe sheet is extremely small, the heat exchange efficiency is low, and the development of a frozen wall is greatly influenced; on one hand, the development rate of the frozen wall is slow, and the construction period is delayed; on the other hand, the maximum thickness of the frozen wall is limited, which affects the safety. Therefore, it is necessary to design a steel pipe ring capable of rapidly developing the frozen wall, reducing energy loss, and increasing the thickness of the frozen wall.
Through retrieval, the Chinese patent publication number: CN 213269887U; the publication date is as follows: 5 months and 25 days 2021; the utility model discloses a steel pipe piece device for freezing shield constructs quick-witted afterbody soil body on every side, includes: a plurality of arc-shaped steel pipe pieces which are sequentially connected to form an annular steel pipe piece; a plurality of rows of freezing pipelines are arranged on the inner surface of each arc-shaped steel pipe sheet along an arc line, the freezing pipelines in the same row on the adjacent arc-shaped steel pipe sheets are connected through a first pipe to form a plurality of annular freezing pipelines, and secondary refrigerant in the annular freezing pipelines reduces the temperature of the annular steel pipe sheets so as to freeze the soil body around the annular steel pipe sheets; the rib plate is arranged on the inner surface of the arc-shaped steel pipe sheet and forms a rib plate cavity, the rib plate cavity is filled with grease with a low freezing point, and the end of the rib plate is provided with an annular thin plate for plugging the rib plate cavity so as to prevent the grease from falling. This application is through filling grease and then increase the area of contact of cryolite and steel-pipe piece in the floor chamber, though can improve heat exchange efficiency, the floor chamber is more on the steel-pipe piece, and it is comparatively complicated to fill the grease process in actual work progress, and is consuming time more.
Disclosure of Invention
In order to solve at least one of the above technical problems, according to an aspect of the present invention, there is provided a steel pipe ring for achieving rapid freezing of a formation, including:
a plurality of arc-shaped steel pipe sheets are sequentially connected to form steel pipe ring sheets;
the rib plates are fixedly connected to the inner surface of the arc-shaped steel pipe sheet in a mode of being perpendicular to the inner surface of the arc-shaped steel pipe sheet, the length direction of the rib plates is arranged along the width direction of the arc-shaped steel pipe sheet, the number of the rib plates is multiple, the rib plates are arranged at intervals, and rib plate cavities are formed between every two adjacent rib plates;
further comprising:
the communication holes are arranged on each rib plate in a penetrating way and are used for communicating the adjacent rib plate cavities;
the sealing plate is arranged on one side of the inner surface of the arc-shaped steel pipe sheet and is used for sealing the cavity of each rib plate;
the water inlet interface is communicated with the rib plate cavity and is used for injecting refrigerating fluid into the rib plate cavity;
and the water outlet connector is communicated with the rib plate cavity and is used for leading out refrigerating fluid in the rib plate cavity.
According to the steel pipe ring for realizing rapid freezing of the stratum, the embodiment of the invention optionally further comprises:
and the connecting channel is used for communicating the two rib plate cavities at the connecting ends of the two adjacent arc-shaped steel pipe sheets.
According to the steel pipe ring for realizing rapid freezing of the stratum, the connecting channel is a U-shaped pipe optionally.
According to the steel pipe ring piece for realizing rapid freezing of the stratum, optionally, the water inlet interface and the water outlet interface are respectively communicated with the two rib plate cavities at the connection ends of the two adjacent arc-shaped steel pipe pieces.
According to the steel pipe ring piece for realizing the rapid freezing of the stratum, provided by the embodiment of the invention, optionally, a communicating pipeline is not arranged at the connecting end of two adjacent arc-shaped steel pipe pieces provided with the water inlet connector and the water outlet connector.
According to the steel pipe ring piece for realizing rapid freezing of the stratum, the water inlet connector and the water outlet connector are optionally arranged at the connecting ends of two adjacent arc-shaped steel pipe pieces with the lowest height in the steel pipe ring piece.
According to the steel pipe ring for realizing rapid freezing of the stratum, the arc-shaped steel pipe piece optionally comprises K blocks and adjacent blocks L1Adjacent block L2Standard Block B1Standard Block B2And standard block B3。
According to another aspect of the invention, a method for processing a steel pipe ring for realizing rapid freezing of a stratum is provided, and the method for processing the steel pipe ring for realizing rapid freezing of the stratum comprises the following steps:
s1, manufacturing each arc-shaped steel pipe sheet according to the size design;
s2, arranging intercommunicating pores on each rib plate of each arc-shaped steel pipe sheet, and processing a water inlet interface or a water outlet interface or a reserved interface of a connecting channel at the connecting end of each arc-shaped steel pipe sheet;
s3, performing nondestructive inspection on the inner side welding seams of the arc-shaped steel pipes, welding the sealing plates to seal the rib cavity after the welding seams are qualified, and performing nondestructive inspection on the exposed welding seams of the arc-shaped steel pipes;
and S4, assembling the arc-shaped steel pipe pieces in a trial mode, performing a water leakage detection test, and removing the temporary connection structures among the arc-shaped steel pipe pieces after the test is qualified to finish the manufacturing.
According to the method for processing the steel pipe ring pieces for realizing rapid freezing of the stratum, in the step S3, optionally, after the nondestructive inspection of the weld joints on the inner sides of the arc-shaped steel pipe pieces is qualified, the inner sides are subjected to anticorrosion treatment, and then the closing plates are welded.
According to the processing method of the steel pipe ring for realizing rapid freezing of the stratum, in the embodiment of the invention, optionally, the S4 specifically includes:
s40, sequentially arranging all the arc steel pipe sheets according to the standard block B3Standard Block B1Standard Block B2Adjacent block L1Adjacent block L2And the K blocks are connected in sequence, trial assembly is carried out, and each arc-shaped steel pipe sheet is temporarily fixed by using a connecting bolt;
s41, connecting the connection end where the connection channel reserved interface is processed with by adopting a connection channel, and respectively installing a water inlet pipeline or a water outlet pipeline at the connection end where the water inlet interface or the water outlet interface is processed;
s42, sealing the water outlet port, connecting a pressure water pump at the water inlet pipeline, injecting water into the pipe at the water pressure of 0.1MPa, observing each arc-shaped steel pipe sheet, and indicating that the detection of the leakage water is qualified if no leakage water or wet stain occurs;
s43, the water inlet pipeline, the water outlet pipeline, the connecting channel and the connecting bolt are removed, and the manufacturing is completed.
Advantageous effects
Compared with the prior art, the invention at least has the following beneficial effects:
(1) the steel pipe ring sheet for realizing rapid freezing of the stratum is structurally improved on the basis of the structure of the existing arc-shaped steel pipe sheet, the intercommunicating pores are formed in each rib plate, and the structural design of the sealing plate and the water inlet and outlet interfaces is matched, so that the contact area of refrigerating fluid and the arc-shaped steel pipe sheet is greatly increased, the higher cold transmission efficiency is realized, the rapid development of a frozen wall can be realized, the development thickness of the frozen wall is increased, the stress mode of the existing steel pipe sheet is not changed by the structural improvement of the invention, and the stress requirement in the shield construction process can be still met after the arc-shaped steel pipe sheets are connected into a ring;
(2) the steel pipe ring pieces for realizing rapid freezing of the stratum are provided with the connecting channels, after the arc-shaped steel pipe pieces are spliced into a ring, a refrigerating fluid loop is formed among the arc-shaped steel pipe pieces, and the cooling effect can be ensured at each part of the whole steel pipe ring pieces;
(3) according to the steel pipe ring piece for realizing rapid freezing of the stratum, the water inlet connector and the water outlet connector are arranged at the connecting ends of two adjacent arc-shaped steel pipe pieces at the lowest height in the steel pipe ring piece, and the refrigerant injected from the water inlet connector can fully fill the inner space of each rib plate cavity from bottom to top, so that the freezing effect of each part of the steel pipe ring piece is ensured;
(4) the processing method of the steel pipe ring sheet for realizing rapid freezing of the stratum has the advantages that the processing operation is carried out on the common arc-shaped steel pipe sheet, the processing cost and the processing difficulty are low, the corrosion of the refrigerating fluid to the steel pipe sheet structure can be effectively reduced by matching with nondestructive flaw detection and anticorrosion treatment in the processing process, the effective service life of the steel pipe sheet is ensured, and the using effect of the steel pipe sheet can be ensured by matching with the leakage water detection operation after trial assembly.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, and it is apparent that the drawings in the following description only relate to some embodiments of the present invention and are not limiting on the present invention.
FIG. 1 is a top view of the outer surface of a partially curved steel pipe sheet according to the present invention;
FIG. 2 shows a cross-sectional view along A-A;
FIG. 3 shows an enlarged view at A in FIG. 2;
FIG. 4 is a schematic view showing a structure of a partially arc-shaped steel pipe piece
Reference numerals:
1. arc-shaped steel pipe sheets; 10. k blocks; 11. abutting block L1(ii) a 12. Abutting block L2(ii) a 13. Standard block B1(ii) a 14. Standard block B2(ii) a 15. Standard block B3；
2. A rib plate; 20. a rib plate cavity; 200. a sub-cavity;
3. a communicating hole;
4. closing the plate;
5. a water inlet interface;
6. a water outlet interface;
7. a connecting channel;
8. a reinforcement ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "a" or "an" or "the" and similar referents in the description and claims of the present invention is not to be construed as limiting any order, quantity, or importance, but rather is to be construed to distinguish one element from another.
Example 1
The realization stratum of this embodiment freezes steel pipe ring piece fast includes:
a plurality of arc-shaped steel pipe sheets 1 are sequentially connected to form steel pipe ring sheets;
the rib plates 2 are fixedly connected to the inner surface of the arc-shaped steel pipe sheet 1 in a mode of being perpendicular to the inner surface of the arc-shaped steel pipe sheet 1, the length direction of the rib plates 2 is arranged along the width direction of the arc-shaped steel pipe sheet 1, a plurality of rib plates 2 are arranged at intervals, and rib plate cavities 20 are formed between every two adjacent rib plates 2;
further comprising:
communication holes 3 which are provided through each rib 2 and communicate the adjacent rib cavities 20;
the closing plate 4 is arranged on one side of the inner surface of the arc-shaped steel pipe sheet 1 and is used for closing each rib plate cavity 20;
the water inlet interface 5 is communicated with the rib plate cavity 20 and is used for injecting refrigerating fluid into the rib plate cavity 20;
and the water outlet interface 6 is communicated with the rib plate cavity 20 and is used for leading out the refrigerating fluid in the rib plate cavity 20.
The freezing pipe is welded in the steel pipe sheet in the existing freezing method, the refrigerating fluid in the freezing pipe passes through the steel pipe sheet and transmits cold energy to the stratum, thereby realize that the stratum freezes, because freezing pipe and steel pipe sheet area of contact are minimum, lead to heat exchange efficiency low, very big influence has been brought to construction period and security, consequently, it is the problem of treating promptly to design a steel pipe sheet structure that can effectively improve heat exchange efficiency, and simultaneously, consider that there is very high requirement to the atress in the shield work progress, the structural design of steel pipe sheet is to satisfy the atress condition.
As shown in fig. 1, 2, 3 and 4, the steel pipe ring for realizing rapid freezing of the formation according to the present embodiment is based on the existing arc-shaped steel pipe 1 structure, each rib plate 2 of the arc-shaped steel pipe sheet 1 is provided with a communicating hole 3, each rib plate cavity 20 is sealed by a sealing plate 4, therefore, after the refrigerating fluid is injected into the rib plate cavities 20 through the water inlet interface 5, all the rib plate cavities 20 can be filled through the communication holes 3, then the refrigerant is led out from the water outlet port 6 to form a refrigeration loop, compared with the existing steel pipe sheet structure, the contact area between the refrigerant liquid and the arc-shaped steel pipe sheet 1 is greatly increased, the refrigerant has higher cold transmission efficiency, can realize the rapid development of the frozen wall and increase the development thickness of the frozen wall, and the structural improvement of the embodiment does not change the stress mode of the existing steel pipe, after all the arc-shaped steel pipe sheets 1 are connected into a ring, the stress requirement in the shield construction process can be still met.
Example 2
The steel pipe ring piece for realizing rapid freezing of the stratum of the embodiment is further improved on the basis of the embodiment 1, and further comprises:
and the connecting channel 7 is used for communicating the two rib plate cavities 20 at the connecting ends of the two adjacent arc-shaped steel pipe sheets 1.
As shown in fig. 2, fig. 3 and fig. 4, the end plates of the arc-shaped steel pipe pieces 1 are not provided with intercommunicating pores, the end plates need to be fixedly connected with each other in the actual construction process, and the rib plate cavities 20 at the ends of the arc-shaped steel pipe pieces 1 can be communicated with the rib plate cavities 20 at the ends of the other arc-shaped steel pipe pieces 1 connected with the other arc-shaped steel pipe pieces 1 by means of connecting bolts or welding, so as to ensure the fluidity of the internal refrigerant and the heat exchange efficiency, the connecting passage 7 is provided in the embodiment, and after the arc-shaped steel pipe pieces 1 are spliced into a ring, a refrigerant circuit is formed between the arc-shaped steel pipe pieces 1, and the cooling effect can be ensured at each position of the whole steel pipe ring piece.
Further, the connecting channel 7 is a U-shaped pipe.
One end of the U-shaped pipe penetrates through the sealing plate 4 and is communicated with the ribbed plate cavity 20 at the end part of one arc-shaped steel pipe sheet 1, and the other end of the U-shaped pipe penetrates through the sealing plate 4 and is communicated with the ribbed plate cavity 20 at the end part of the other arc-shaped steel pipe sheet 1.
The U-shaped pipe structure can communicate the two rib plate cavities 20 in contact on the premise of not influencing the connection of the two arc-shaped steel pipe sheets 1.
Example 3
The steel pipe ring piece for realizing rapid freezing of the stratum in the embodiment is further improved on the basis of the embodiment 2, and the water inlet connector 5 and the water outlet connector 6 are respectively communicated with two rib plate cavities 20 at the connection ends of two adjacent arc-shaped steel pipe pieces 1;
the connecting end of two adjacent arc-shaped steel pipe sheets 1 provided with the water inlet connector 5 and the water outlet connector 6 is not provided with a communicating pipeline 7.
As shown in fig. 2 and 4, the water inlet 5 and the water outlet 6 are respectively disposed at the ends of two different adjacent arc-shaped steel pipe pieces 1, and no connecting channel 7 is disposed at the joint, so that the refrigerating fluid introduced from the water inlet 5 can completely flow through the whole steel pipe ring piece, thereby ensuring the fluidity of the refrigerating fluid at each position of the steel pipe ring piece.
Example 4
The steel pipe ring piece for realizing rapid freezing of the stratum is further improved on the basis of the embodiment 3, and the water inlet connector 5 and the water outlet connector 6 are arranged at the connecting end of two adjacent arc-shaped steel pipe pieces 1 with the lowest height in the steel pipe ring piece.
Through the structural arrangement of this embodiment, the refrigerant liquid injected from the water inlet port 5 can fully fill the inner space of each rib plate cavity 20 from bottom to top, and the refrigeration effect at each position of the steel pipe ring piece is ensured.
Example 5
The steel pipe ring for realizing rapid freezing of the stratum of the embodiment is further improved on the basis of the embodiment 4, and the arc-shaped steel pipe 1 comprises a K block 10 and an adjacent block L 111. Abutting block L 212. Standard block B 113. Standard block B 214 and standard block B 315。
As shown in fig. 2, the present embodiment adopts the existing steel pipe ring structure design, and improves the structure based on the existing design shape, and has strong structural adaptability and low manufacturing cost.
Further, the arc-shaped steel pipe sheet 1 of this embodiment is formed with the beaded finish 8 along circumference at its inner surface, the beaded finish 8 has a plurality of, the interval arrangement, from this, separated into a plurality of sub-chamber 200 with each floor chamber 20, from this, 2 departments of floor of every sub-chamber 200 all set up the intercommunicating pore 3, along steel pipe ring sheet circumference, each sub-chamber 200 constitutes multirow refrigerating fluid circulation route, the circulation route of each row is equallyd divide and is set up a department interface 5 of intaking and interface 6 of going out water respectively, as shown in fig. 4, multichannel refrigerating fluid circuit combined action, further strengthen the refrigeration effect.
Example 6
The processing method of the steel pipe ring for realizing rapid freezing of the stratum comprises the following steps:
s1, manufacturing each arc-shaped steel pipe sheet 1 according to the size design;
s2, arranging communication holes 3 on each rib plate 2 of each arc-shaped steel pipe sheet 1, and processing reserved interfaces of a water inlet interface 5, a water outlet interface 6 or a connecting channel 7 at the connection end of each arc-shaped steel pipe sheet 1;
s3, performing nondestructive flaw detection on the inner side welding seam of each arc-shaped steel pipe sheet 1, performing anticorrosion treatment on the inner side after the detection is qualified, then welding a sealing plate 4 to seal the rib plate cavity 20, and performing nondestructive flaw detection on the exposed welding seam of each arc-shaped steel pipe sheet 1;
s4, assembling the arc-shaped steel pipe pieces 1 in a trial mode, testing the water leakage detection, removing the temporary connecting structures among the arc-shaped steel pipe pieces 1 after the tests are qualified, and completing the manufacture, wherein the method specifically comprises the following steps:
s40, sequentially arranging the arc steel pipe sheets 1 according to the standard block B 315. Standard block B 113. Standard block B 214. Abutting block L 111. Abutting block L 212, trial assembly is carried out according to the connection sequence of the K blocks 10, and the arc-shaped steel pipe sheets 1 are temporarily fixed by using connecting bolts;
s41, connecting the connection end where the reserved interface of the connection channel 7 is processed with the connection channel 7, and respectively installing a water inlet pipeline or a water outlet pipeline at the connection end where the water inlet interface 5 or the water outlet interface 6 is processed;
s42, sealing the water outlet connector 6, connecting a pressure water pump at the water inlet pipeline, injecting water into the pipe at the water pressure of 0.1MPa, observing each arc-shaped steel pipe sheet 1, and indicating that the detection of the leakage water is qualified if no leakage water or wet stain occurs;
s43, the water inlet pipeline, the water outlet pipeline, the connecting channel 7 and the connecting bolt are removed, and the manufacturing is completed.
Taking a specific manufacturing process as an example, in this embodiment, a standard steel pipe ring piece with a width of 1.5m, an inner diameter of 6m and an outer diameter of 6.7m is manufactured, and first, according to a standard external dimension, a K block 10 and an adjacent block L are manufactured111. Abutting block L 212. Standard block B 113. Standard block B 214 and standard block B 315；
The center of each rib plate 2 of each arc-shaped steel pipe sheet 1 is provided with a communication hole 3, the bottom end of each communication hole 3 is 5cm away from the inner side surface of each arc-shaped steel pipe sheet 1, the aperture of each communication hole 3 is 5cm, and in the practical manufacturing process, the aperture size of each communication hole 3 can be designed in a targeted manner according to different refrigerant flow and flow speed requirements of different construction environments, so that the refrigerant flow and flow speed can be flexibly controlled;
for standard block B 113 and an abutment block L 111, holes are formed in the sealing plates 4 of the two adjacent rib plate cavities 20, and interfaces are reserved in the welding connecting channels 7; for adjacent blocks L1Holes are respectively formed in the sealing plates 4 of the two rib plate cavities 20 adjacent to the K block 10, and the reserved interfaces of the connecting channels 7 are welded; for K block 10 and adjacent block L 212 the sealing plates 4 of two adjacent rib plate cavities 20 are all provided with holes and are welded and connectedA channel 7 reserves an interface; for adjacent blocks L 212 and standard block B 214, holes are formed in the sealing plates 4 of the two adjacent rib plate cavities 20, and interfaces are reserved in the welding connecting channels 7; for standard block B 214 and standard block B 315, holes are formed in the sealing plates 4 of the two adjacent rib plate cavities 20, and the reserved interfaces of the connecting channels 7 are welded;
in a standard block B 113 near the standard block B 315, a through hole is arranged on the sealing plate 4 at the end rib plate cavity 20 of the water inlet pipe 15, and a water inlet interface 5 is arranged on the sealing plate; in a standard block B 315 near the standard block B1A through hole is arranged on the sealing plate 4 at the end rib plate cavity 20 of the end part 13, and a water outlet port 6 is arranged;
then carrying out nondestructive flaw detection on the inner side welding seams of the arc-shaped steel pipe sheets 1, spraying anticorrosive layers on the inner side walls of the rib plate cavities 20 after all welding seams are qualified through detection, carrying out anticorrosive treatment, then welding the sealing plates 4, and carrying out nondestructive flaw detection on exposed welding seams after the welding of the sealing plates 4 is finished;
after the nondestructive inspection is qualified, the six arc-shaped steel pipe sheets 1 are assembled in a trial mode and sequentially arranged according to the standard blocks B 315. Standard block B 113. Standard block B 214. Abutting block L 111. Abutting block L 212 and the K block 10 are spliced, and the connecting ends are temporarily fixed by connecting bolts;
after fixation, connecting the U-shaped pipes at reserved interfaces of the connecting channels 7, and respectively connecting the water inlet pipeline and the water outlet pipeline with the water inlet interface 5 and the water outlet interface 6;
and after connection, pressurizing and injecting water for many times, wherein if no water leakage or wet stain occurs during pressurizing and injecting water every time, the water leakage detection is qualified, and after the water leakage detection is qualified, the water inlet pipeline, the water outlet pipeline, the connecting channel 7 and the connecting bolt are dismantled.
Example 7
The method for processing a steel pipe ring for realizing rapid freezing of a ground layer in this embodiment is further improved on the basis of embodiment 6, and in step S2, when the communication holes 3 are formed in the rib plate 2, the hole diameter d of the communication hole 3 is determined by the following calculation model:
wherein n is the number of openings in the longitudinal section of the steel pipe ring, that is, the number of sub-cavities 200 into which one rib cavity 20 is divided, and n is 5 in the structure of fig. 4 as an example; v is the flow velocity of the refrigerating fluid, and the best effect is obtained when v is 0.1 m/s; delta t is the refrigerating fluid temperature difference (DEG C) of the water inlet connector 5 and the water outlet connector 6; gamma is the density of the refrigerating fluid (kg/m)3) (ii) a c is the specific heat of the refrigerating fluid (kJ/(kg. ℃)); qz is refrigerating capacity (kJ/h) required by the refrigerating station; w is the total flow (m) calculated for the cooling fluid circulation3/h)。
In the actual processing process, according to the requirement of the cooling capacity required by the refrigerating station during target tunnel construction, the aperture of the communicating hole 3 is determined through the calculation model of the embodiment, and the processed steel pipe ring piece can effectively meet the cooling requirement in actual use.
The examples described herein are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. A steel pipe ring piece for realizing quick freezing of stratum comprises,
a plurality of arc-shaped steel pipe sheets are sequentially connected to form steel pipe ring sheets;
the rib plates are fixedly connected to the inner surface of the arc-shaped steel pipe sheet in a mode of being perpendicular to the inner surface of the arc-shaped steel pipe sheet, the length direction of the rib plates is arranged along the width direction of the arc-shaped steel pipe sheet, the number of the rib plates is multiple, the rib plates are arranged at intervals, and rib plate cavities are formed between every two adjacent rib plates;
it is characterized by also comprising:
the communication holes are arranged on each rib plate in a penetrating way and are used for communicating the adjacent rib plate cavities;
the sealing plate is arranged on one side of the inner surface of the arc-shaped steel pipe sheet and is used for sealing the cavity of each rib plate;
the water inlet interface is communicated with the rib plate cavity and is used for injecting refrigerating fluid into the rib plate cavity;
and the water outlet connector is communicated with the rib plate cavity and is used for leading out refrigerating fluid in the rib plate cavity.
2. The steel pipe ring for realizing rapid freezing of the stratum according to claim 1, further comprising:
and the connecting channel is used for communicating the two rib plate cavities at the connecting ends of the two adjacent arc-shaped steel pipe sheets.
3. The steel pipe ring piece for realizing rapid freezing of the stratum according to claim 2, wherein: the connecting channel is a U-shaped pipe.
4. The steel pipe ring piece for realizing rapid freezing of the stratum according to claim 2, wherein: the water inlet connector and the water outlet connector are respectively communicated with two rib plate cavities at the connecting ends of two adjacent arc-shaped steel pipe sheets.
5. The steel pipe ring piece for realizing rapid freezing of the stratum according to claim 4, wherein: the connecting end of the two adjacent arc-shaped steel pipe sheets provided with the water inlet connector and the water outlet connector is not provided with a communicating pipeline.
6. The steel pipe ring piece for realizing rapid freezing of the stratum according to claim 5, wherein: the water inlet connector and the water outlet connector are arranged at the connecting end of two adjacent arc-shaped steel pipe sheets with the lowest height in the steel pipe ring sheets.
7. The steel pipe ring piece for realizing rapid freezing of the stratum according to claim 1, wherein: the arc-shaped steel pipe sheet comprises K blocks and adjacent blocks L1Adjacent block L2Standard Block B1Standard Block B2And standard block B3。
8. A processing method for a steel pipe ring piece for realizing rapid freezing of a stratum is characterized in that the steel pipe ring piece for realizing rapid freezing of the stratum based on the claims 1-7 comprises the following steps:
s1, manufacturing each arc-shaped steel pipe sheet according to the size design;
s2, arranging intercommunicating pores on each rib plate of each arc-shaped steel pipe sheet, and processing a water inlet interface or a water outlet interface or a reserved interface of a connecting channel at the connecting end of each arc-shaped steel pipe sheet;
s3, performing nondestructive inspection on the inner side welding seams of the arc-shaped steel pipes, welding the sealing plates to seal the rib cavity after the welding seams are qualified, and performing nondestructive inspection on the exposed welding seams of the arc-shaped steel pipes;
and S4, assembling the arc-shaped steel pipe pieces in a trial mode, performing a water leakage detection test, and removing the temporary connection structures among the arc-shaped steel pipe pieces after the test is qualified to finish the manufacturing.
9. The processing method of the steel pipe ring for realizing the rapid freezing of the stratum according to claim 8, characterized in that: and in the S3, after the nondestructive inspection of the weld joint on the inner side of each arc-shaped steel pipe sheet is qualified, performing anticorrosion treatment on the inner side, and then welding a sealing plate.
10. The method for processing the steel pipe ring for realizing rapid freezing of the stratum according to claim 8, wherein the step S4 specifically comprises:
s40, sequentially arranging all the arc steel pipe sheets according to the standard block B3Standard Block B1Standard Block B2Adjacent block L1Adjacent block L2And the K blocks are connected in sequence, trial assembly is carried out, and each arc-shaped steel pipe sheet is temporarily fixed by using a connecting bolt;
s41, connecting the connection end where the connection channel reserved interface is processed with by adopting a connection channel, and respectively installing a water inlet pipeline or a water outlet pipeline at the connection end where the water inlet interface or the water outlet interface is processed;
s42, sealing the water outlet port, connecting a pressure water pump at the water inlet pipeline, injecting water into the pipe at the water pressure of 0.1MPa, observing each arc-shaped steel pipe sheet, and indicating that the detection of the leakage water is qualified if no leakage water or wet stain occurs;
s43, the water inlet pipeline, the water outlet pipeline, the connecting channel and the connecting bolt are removed, and the manufacturing is completed.
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| US3183675A (en) * | 1961-11-02 | 1965-05-18 | Conch Int Methane Ltd | Method of freezing an earth formation |
| CN111963179A (en) * | 2020-08-24 | 2020-11-20 | 中交第三航务工程局有限公司 | Construction method for replacing shield tail brush through freezing reinforcement |
| CN112065403A (en) * | 2020-09-01 | 2020-12-11 | 中交第二航务工程局有限公司 | Steel tube sheet device for freezing soil around the tail of shield machine and its construction method |
| CN212927883U (en) * | 2020-08-24 | 2021-04-09 | 中交第三航务工程局有限公司 | Be used for shield tail brush to change ground floor freezing reinforced (rfd) steel-pipe piece |
| CN213269887U (en) * | 2020-09-01 | 2021-05-25 | 中交第二航务工程局有限公司 | Steel pipe sheet device for freezing soil around tail of shield tunneling machine |
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2021
- 2021-11-05 CN CN202111307185.7A patent/CN114165263B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3183675A (en) * | 1961-11-02 | 1965-05-18 | Conch Int Methane Ltd | Method of freezing an earth formation |
| CN111963179A (en) * | 2020-08-24 | 2020-11-20 | 中交第三航务工程局有限公司 | Construction method for replacing shield tail brush through freezing reinforcement |
| CN212927883U (en) * | 2020-08-24 | 2021-04-09 | 中交第三航务工程局有限公司 | Be used for shield tail brush to change ground floor freezing reinforced (rfd) steel-pipe piece |
| CN112065403A (en) * | 2020-09-01 | 2020-12-11 | 中交第二航务工程局有限公司 | Steel tube sheet device for freezing soil around the tail of shield machine and its construction method |
| CN213269887U (en) * | 2020-09-01 | 2021-05-25 | 中交第二航务工程局有限公司 | Steel pipe sheet device for freezing soil around tail of shield tunneling machine |
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| CN114165263B (en) | 2023-10-27 |
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