CN114060038A - Freezing reinforcement device and shield butt joint reinforcement method thereof - Google Patents
Freezing reinforcement device and shield butt joint reinforcement method thereof Download PDFInfo
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- CN114060038A CN114060038A CN202111279322.0A CN202111279322A CN114060038A CN 114060038 A CN114060038 A CN 114060038A CN 202111279322 A CN202111279322 A CN 202111279322A CN 114060038 A CN114060038 A CN 114060038A
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- 230000008014 freezing Effects 0.000 title claims abstract description 80
- 238000007710 freezing Methods 0.000 title claims abstract description 80
- 210000001503 joint Anatomy 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000002787 reinforcement Effects 0.000 title claims abstract description 29
- 230000005641 tunneling Effects 0.000 claims abstract description 27
- 239000003507 refrigerant Substances 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 238000010030 laminating Methods 0.000 claims abstract description 3
- 239000002689 soil Substances 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 238000003032 molecular docking Methods 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 239000004033 plastic Substances 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 238000003860 storage Methods 0.000 description 8
- 238000005259 measurement Methods 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 6
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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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- 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
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- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Soil Sciences (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a freezing reinforcement device and a shield butt joint reinforcement method thereof, wherein the device comprises: a shield tunneling machine body; the detachable anchor bolts are arranged on the inner wall of the end part of the shield machine body along the propelling direction and are connected with lifting rings; freezing the pipe, it passes through to freeze the pipe can dismantle the crab-bolt with rings are mutually supported and the laminating is fixed in the inner wall of shield constructs quick-witted body, freeze the pipe and be arranged in the thermal refrigerant medium in the transmission can the transport stratum. Through the technical scheme, the freezing construction efficiency can be improved, and the construction period is shortened.
Description
Technical Field
The invention relates to the technical field of shield butt joint construction assistance, in particular to a freezing reinforcement device and a shield butt joint reinforcement method thereof.
Background
Shield butt joint means that two shield machines tunnel to a butt joint place in opposite directions in a stratum, and butt joint is carried out in the stratum to complete construction of the whole tunnel, and the method is generally suitable for shield tunnel construction with large buried depth and long distance.
Shield butt joint is divided into two modes of civil butt joint and mechanical butt joint, wherein a soil-wood butt joint method is commonly used. The earth-wood butt joint method is to reinforce the ground point to stop water and prevent the ground from being unstable, and then to finish the shield dismantling and the tunnel lining. Conventional reinforcement methods include ground formation reinforcement, in-tunnel grouting assistance, and freezing assistance.
And (3) freezing construction is carried out by using a freezing method for butt joint, according to the earth-wood type butt joint method, when the two shield machines tunnel to a certain distance, mutual position adjustment of the axes of the two shield machines is started, and then the tunneling is continued to the shortest distance. And after the two shield machines are closed, the shield machines start to be dismantled, freezing construction is carried out, and a frozen soil curtain is formed on the periphery of the cutter head. And after the freezing range is confirmed, the shield cutter head is removed, and the steel plate welding construction connected with the two shield machines is carried out. When the cutter head is dismantled, the cutter head is dismantled according to subsection, and a steel plate closed exposed surface is welded immediately after the cutter head is dismantled. The freezing method in shield butt joint is that a freezer is arranged in one side or two sides of a shield to freeze, so that the stratum at the butt joint of the shield is frozen to form a closed high-strength frozen soil curtain, underground water is prevented from entering a butt joint working face, external water and soil pressure is resisted, and a temporary protection structure with both strength and water sealing property is provided for shield butt joint work.
However, the above freezing method has a complex flow, and the equipment in the shield machine must be removed, and a certain number of freezing pipes must be inserted into the soil, so that the freezing construction is complicated.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
Therefore, the invention provides a freezing reinforcement device which can improve the freezing construction efficiency and shorten the construction period.
The invention further provides a shield butt joint reinforcing method applied to the freezing reinforcing device.
According to an embodiment of the first aspect of the present invention, a freeze reinforcement device includes:
a shield tunneling machine body;
the detachable anchor bolts are arranged on the inner wall of the end part of the shield machine body along the propelling direction and are connected with lifting rings;
freezing the pipe, it passes through to freeze the pipe can dismantle the crab-bolt with rings are mutually supported and the laminating is fixed in the inner wall of shield constructs quick-witted body, freeze the pipe and be arranged in the thermal refrigerant medium in the transmission can the transport stratum.
The freezing reinforcement device provided by the embodiment of the invention has at least the following beneficial effects: the detachable anchor bolt is arranged inside the end part of the shield machine body along the propelling direction, the detachable anchor bolt and the hanging ring are mutually matched to enable the freezing pipe to be tightly attached to the inner wall of the shield machine body, and when a refrigerant medium is transmitted in the freezing pipe, the formation heat in contact with the shield machine can be taken away, so that a frozen soil curtain is formed on the formation, freezing construction is realized, the efficiency of freezing construction can be improved, and the construction period is shortened.
According to some embodiments of the invention, the freezing pipe is annular and is arranged on the inner wall of the shield tunneling machine body.
According to some embodiments of the invention, the freezing tube is a seamless low carbon steel tube.
According to some embodiments of the invention, the freezing pipe is any one of PVC, PPR, ABS, PE plastic pipe.
According to some embodiments of the invention, the detachable anchor and the lifting eye are both made of plastic.
According to some embodiments of the invention, the freezing tube has a diameter of 32 mm or 60 mm.
According to some embodiments of the invention, the freezing pipe is provided with a liquid inlet for the refrigerant medium to enter.
According to some embodiments of the invention, the freezing tube is provided with a liquid outlet for the refrigerant medium to be output.
According to the embodiment of the second aspect of the invention, the shield butt joint reinforcing method is applied to the freezing reinforcing device, and the method comprises the following steps:
when the distance between the two shield tunneling machine bodies reaches a preset distance threshold value, the freezing pipe is used for transmitting a refrigerant medium to enable the stratum on the outer wall of the shield tunneling machine bodies to form a frozen soil curtain;
arranging a plurality of temperature measuring tubes in the frozen soil curtain;
and when the temperature measured by the temperature measuring pipe reaches a preset temperature threshold value, carrying out shield butt joint treatment.
The shield butt joint reinforcing method provided by the embodiment of the invention at least has the following beneficial effects: when the distance between the two shield tunneling machine bodies reaches a preset distance threshold value, a frozen soil curtain is formed on the stratum on the outer wall of the shield tunneling machine bodies by using a freezing pipe to transmit a refrigerant medium; arranging a plurality of temperature measuring pipes in the frozen soil curtain; when the temperature measured by the temperature measuring pipe reaches a preset temperature threshold value, carrying out shield butt joint treatment; through the technical scheme, the freezing construction efficiency can be improved, and the construction period is shortened.
According to some embodiments of the invention, the performing the shield docking process comprises:
performing anti-loosening treatment on the duct piece of the shield machine body, and performing disintegration treatment on the shield machine body;
welding waterproof steel plate rings to outer shield shells of the two shield machine bodies;
and lining the butt joint sections of the two shield tunneling machine bodies.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural view of a freeze reinforcement apparatus provided in accordance with an embodiment of the present invention;
FIG. 2 is a partial cross-sectional view of a freeze reinforcement provided in accordance with one embodiment of the present invention;
FIG. 3 is a schematic diagram of shield docking provided by an embodiment of the present invention;
fig. 4 is a flowchart of a shield docking reinforcement method according to an embodiment of the present invention;
fig. 5 is a detailed flowchart of shield docking processing of the shield docking reinforcement method according to an embodiment of the present invention.
Reference numerals:
the shield machine comprises a shield machine body 100, a freezing pipe 200, a detachable anchor bolt 300, a hanging ring 400, a shield tail grouting solidification body 500 and a frozen soil curtain 600.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 3, according to an embodiment of a first aspect of the present invention, there is provided a freeze reinforcement device including: a shield machine body 100; the detachable anchor 300 is arranged on the inner wall of the end part of the shield tunneling machine body 100 in the propelling direction, and the detachable anchor 300 is connected with a lifting ring 400; the freezing pipe 200 is fixed on the inner wall of the shield machine body 100 in a fitting manner through the mutual matching of the detachable anchor bolt 300 and the hanging ring 400, and the freezing pipe 200 is used for transmitting a refrigerant medium capable of transferring heat in the stratum.
It should be noted that, the detachable anchor bolt 300 is arranged inside the end of the shield machine body 100 along the propulsion direction, the freezing pipe 200 is tightly attached to the inner wall of the shield machine body 100 by the cooperation of the detachable anchor bolt 300 and the hanging ring 400, and when a refrigerant medium is transmitted in the freezing pipe 200, the heat of the stratum contacting with the shield machine can be taken away, so that the stratum forms the frozen soil curtain 600, thereby realizing the freezing construction.
It should be noted that the shield tail grouting solidification body 500 of the shield tunneling machine body 100 can fix the lining segment.
It should be noted that, since the inner wall of the shield machine body 100 is made of metal, it has thermal conductivity, so that the outer wall of the shield machine acts as a freezing plate. The detachable anchor bolt 300 and the hanging ring 400 enable the freezing pipe 200 to be attached to the inner wall of the shield machine as much as possible, enable the freezing pipe 200 to be attached to the inner wall of the shield machine body 100 as much as possible, and can guarantee the best freezing effect.
The cold medium can be liquid nitrogen, which is a gas with inertia, no color, no odor, no corrosiveness, no combustibility and extremely low temperature. The heat in the stratum can be transferred by transmitting the liquid nitrogen in the freezing pipe 200, so that frozen soil is formed in the stratum, the infiltration of underground water is well prevented, and the subsequent shield butt joint treatment is facilitated.
In some embodiments of the present invention, the freezing pipe 200 is disposed in a ring shape on an inner wall of the shield machine body 100. The freezing pipe 200 is annular and is arranged on the inner wall of the shield machine body 100, so that the freezing pipe 200 and the shield machine body 100 have a larger contact area, heat is transferred more quickly, and a better freezing effect is ensured.
In some embodiments of the invention, the freezing tube 200 is a seamless low carbon steel tube. The seamless low-carbon steel pipe has strong low-temperature resistance and corrosion resistance so as to facilitate cold medium transmission.
In some embodiments of the present invention, the freezing pipe 200 is any one of PVC, PPR, ABS, PE plastic pipe. PVC, PPR, ABS, PE plastic tubing all have stronger low temperature resistant and corrosion resisting property to the cost is lower.
In some embodiments of the invention, the removable anchor 300 and the sling 400 are made of plastic. When the detachable anchor 300 and the hanging ring 400 are both made of plastic, the freezing pipe 200 is only required to be removed after freezing construction is finished, and the detachable anchor 300 and the hanging ring 400 do not need to be taken out of a groove integrally, so that construction by the construction method can be carried out next time, and recycling is realized.
In some embodiments of the invention, the freezing tube 200 has a diameter of 32 mm or 60 mm. The diameter of the freezing pipe 200 is 32 mm or 60mm, so that cold medium mass transfer is well realized; the freezing pipes 200 are provided in plural, and the interval between the freezing pipes 200 may be set to be 0.5 m to 0.8 m.
In some embodiments of the invention, the freezing pipe 200 is provided with a liquid inlet for the refrigerant medium to enter. The freezing pipe 200 is also provided with a liquid outlet for the refrigerant medium to be output. Through the liquid inlet and the liquid outlet, the cold medium can be circularly transmitted, and the frozen soil curtain 600 is formed on the stratum. In addition, the liquid inlet and the liquid outlet are provided with rubber gaskets, so that the sealing performance of the two through holes is ensured, and the waste of refrigerant medium is avoided.
It should be noted that the liquid nitrogen storage tank and the tank car are stopped outside the tunnel initial well, the liquid nitrogen is conveyed to the freezing pipe 200 of the freezing working face at the shield butt joint by using a pipeline, the heat of the stratum is absorbed circularly, the vaporized nitrogen is collected by the gas collecting pipe, and then the vaporized nitrogen is discharged to the open place outside the tunnel by using the exhaust pipe.
As shown in fig. 4, an embodiment according to a second aspect of the present invention provides a shield docking and reinforcing method, which is applied to the freezing and reinforcing apparatus in the above embodiments, and includes, but is not limited to, step S10, step S20, and step S30:
s10, when the distance between the two shield tunneling machine bodies reaches a preset distance threshold, a frozen soil curtain is formed on the stratum on the outer wall of the shield tunneling machine bodies by using a freezing pipe to transmit a refrigerant medium;
s20, arranging a plurality of temperature measuring tubes in the frozen soil curtain;
and S30, when the temperature measured by the temperature measuring tube reaches a preset temperature threshold value, performing shield butt joint treatment.
It should be noted that when the distance between the two shield tunneling machine bodies reaches a preset distance threshold, the frozen soil curtain is formed on the stratum on the outer wall of the shield tunneling machine body by using the freezing pipe to transmit the refrigerant medium; then arranging a plurality of temperature measuring tubes in the frozen soil curtain; and then when the temperature measured by the temperature measuring pipe reaches a preset temperature threshold value, carrying out shield butt joint treatment.
As shown in fig. 5, in some embodiments of the present invention, the step S30 may include, but is not limited to, step S31, step S32 and step S33.
S31, performing anti-loosening treatment on the duct piece of the shield machine body, and disassembling the shield machine body;
s32, welding waterproof steel plate rings to outer shield shells of the two shield machine bodies;
and S33, lining the butt joint sections of the two shield tunneling machine bodies.
It should be noted that, firstly, the segment of the shield machine body is subjected to anti-loosening treatment, the shield machine body is subjected to disintegration treatment, then the waterproof steel plate rings are welded on the outer shield shells of the two shield machine bodies, and finally the butt joint section of the two shield machine bodies is subjected to lining treatment.
It is worth noting that a plurality of temperature measuring tubes are arranged in the rectangular frozen soil curtain, temperature measuring meters are arranged in the temperature measuring tubes and connected with an external display device, and the diameter of each temperature measuring tube can be 45 mm.
In the shield butt joint process, it should be noted that the shield tail forms a shield tail grouting consolidation body, and except for the shield tail, the front body and the middle body both adopt double-layer shield shells. When the shield shells are disassembled, the outer shield shells are remained in the stratum, and after other parts are disassembled, waterproof steel plate rings are welded between the outer shield shells remained by the two shield shells to serve as supports of the in-hole disassembling machine. Under the protection of the complete steel plate ring, all parts of the shield can be safely disassembled.
The cutter head, the front body and the middle body adopt an easily-disassembled block design mode, the weight of a single piece after being disassembled is properly controlled to be 3-6 blocks according to the inner diameter of the tunnel, and the blocks can be connected through high-strength bolts so as to be conveniently disassembled and reassembled.
The main bearing is an important part of the shield, is usually connected with a shield shell and a cutter head by adopting high-strength bolts, is easy to remove, and the structural size of the main bearing is properly controlled so as to be beneficial to the removal.
In order to accurately grasp the relative position of the butt shield in advance and ensure the final butt joint precision, the following method is adopted to detect the relative position of the shield.
In the shield manufacturing process, generally 8-1 shield attitude measurement points are distributed on a shield middle body steel structure, relative coordinates of each measurement point and a shield central line and a cutter head center are provided, coordinates and elevations of each point are measured through a lead and a leveling point arranged in a tunnel, and then data such as shield central coordinates and elevations, shield vertical and horizontal inclination angles and the like can be calculated. And controlling the tunneling direction and the attitude of the backward shield by taking the position and the attitude of the forward shield as the reference. Generally, when the distance between the trailing shield and the leading shield is 200, 100, 50 and 30m, the coordinates and the attitude of the primary shield are measured and calculated respectively, the direction adjustment is mainly performed before 30m, and the attitude adjustment is mainly performed after 30 m.
The docking accuracy determined by the coordinates and the elevation respectively measured by the two shield machines is greatly influenced by measurement errors. In shield butt joint engineering, when the accumulated value of the calculated measurement errors of the tunnel length is larger than the allowable butt joint deviation, the method cannot be independently adopted, and a drill hole is needed to directly detect the relative position of the shield.
After the leading shield machine reaches a preset position and partial components are disassembled, when the trailing shield machine is about 50m away from the leading shield, a detection hole is drilled from the leading shield machine to the trailing shield, a measurement pipe is installed, the magnetic detection system and the gamma ray detection system are used for directly measuring the position of the trailing shield machine, the trailing shield machine controls the tunneling direction and the tunneling attitude according to the measurement result, the tunneling is corrected for 20m, the measurement is carried out again, the tunneling direction and the tunneling attitude are adjusted, and the tunneling is continuously corrected to the butt joint mileage.
In order to prevent the segments from loosening after the shield is butted and disassembled, the last ring pipe segments are longitudinally connected before the shield is disassembled. After the shield reaches the expected butt joint mileage, the shield shell must be firmly supported on the last ring pipe piece in order to prevent the shield from retreating.
In order to facilitate the position detection of the advancing shield to the trailing shield, the advancing shield needs to remove parts of the advancing shield, and the parts generally comprise a segment mounting machine, a main bearing, a middle body and the like.
The butt joint section is mostly lined by reinforced concrete segments or steel tubes, and segment waterproof and connection with the assembled segments are required.
And designing the thickness of the freezing curtain by combining engineering characteristics, soil layer conditions and construction site conditions. The freezing pipe is tightly attached to the inner wall of the shield machine under the action of the detachable anchor bolt and the hanging ring, and a rectangular frozen soil curtain with the height larger than 2m is guaranteed to be formed in a soil body.
Freezing pipes are uniformly arranged in the two butt shield machines along the circumference of the inner wall of the shield machine, and the arrangement principle of the freezing pipes is to ensure that the distance between the holes of the freezing pipes is 0.5-0.8 m. The freezing tube is typically 32 or 60mm in diameter. The freezing pipe is usually a seamless low-carbon steel pipe, and can also be a plastic pipe such as PVC, PPR, ABS, PE and the like.
The purpose is mainly to measure the temperature development conditions of different parts in the range of the freezing curtain so as to take corresponding control measures and ensure the safety of construction. The diameter of the temperature measuring tube is generally 45 mm.
It should be noted that, since the shield docking reinforcement method in this embodiment is based on the same inventive concept as the freezing reinforcement device in the above embodiment, the corresponding contents in the method embodiment are also applicable to the system embodiment, and will not be described in detail here.
One of ordinary skill in the art will appreciate that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A freeze reinforcement device, comprising:
a shield tunneling machine body;
the detachable anchor bolts are arranged on the inner wall of the end part of the shield machine body along the propelling direction and are connected with lifting rings;
freezing the pipe, it passes through to freeze the pipe can dismantle the crab-bolt with rings are mutually supported and the laminating is fixed in the inner wall of shield constructs quick-witted body, freeze the pipe and be arranged in the thermal refrigerant medium in the transmission can the transport stratum.
2. The freezing reinforcement device according to claim 1, wherein the freezing pipe is annular and is disposed on an inner wall of the shield machine body.
3. The freeze reinforcement of claim 1, wherein the freeze tube is a seamless mild steel tube.
4. The freeze reinforcement of claim 1, wherein the freeze tube is any one of PVC, PPR, ABS, PE plastic tube.
5. A freeze reinforcement according to claim 4, wherein the detachable anchor and the lifting eye are both made of plastic.
6. The freeze reinforcement of claim 1, wherein the freeze tube has a diameter of 32 millimeters or 60 millimeters.
7. A freeze reinforcement according to claim 1, characterised in that the freeze tube is provided with a liquid inlet for the entry of a refrigerant medium.
8. Freezing reinforcement according to claim 7, characterized in that the freezing tube is provided with a liquid outlet for the refrigerant medium to be output.
9. A shield butt joint reinforcing method applied to the freezing reinforcing device of any one of claims 1 to 8, the method comprising:
when the distance between the two shield tunneling machine bodies reaches a preset distance threshold value, the freezing pipe is used for transmitting a refrigerant medium to enable the stratum on the outer wall of the shield tunneling machine bodies to form a frozen soil curtain;
arranging a plurality of temperature measuring tubes in the frozen soil curtain;
and when the temperature measured by the temperature measuring pipe reaches a preset temperature threshold value, carrying out shield butt joint treatment.
10. The shield docking reinforcement method according to claim 9, wherein the performing shield docking treatment includes:
performing anti-loosening treatment on the duct piece of the shield machine body, and performing disintegration treatment on the shield machine body;
welding waterproof steel plate rings to outer shield shells of the two shield machine bodies;
and lining the butt joint sections of the two shield tunneling machine bodies.
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| CN202111279322.0A CN114060038B (en) | 2021-10-29 | 2021-10-29 | Freezing reinforcement device and shield butt joint reinforcement method thereof |
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| CN202111279322.0A CN114060038B (en) | 2021-10-29 | 2021-10-29 | Freezing reinforcement device and shield butt joint reinforcement method thereof |
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| CN114060038B CN114060038B (en) | 2024-02-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116044442A (en) * | 2023-03-31 | 2023-05-02 | 中建交通建设集团有限公司 | Butt joint section structure in shield ground and construction method thereof |
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| US5221160A (en) * | 1990-04-26 | 1993-06-22 | Shimizuo Construction Co. | Subterranean connecting method for construction of shield tunnel and connecting apparatus therefor |
| US20110116868A1 (en) * | 2008-07-17 | 2011-05-19 | Pierre Habib | Method for constructing an underground tunnel or hole to create an impervious plug for the storage of hazardous, particularly radioactive, waste |
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| CN205677624U (en) * | 2016-06-27 | 2016-11-09 | 海南大学 | Shield docks semi-circular shape consolidation by freezing structure |
| CN206694036U (en) * | 2017-04-26 | 2017-12-01 | 海瑞克股份公司 | A kind of tail shield of the rock tunnel(ling) machine with integrated ground freezing pipe |
| CN212642720U (en) * | 2020-06-01 | 2021-03-02 | 宏润建设集团股份有限公司 | Indirect freezing device and freezing system |
| CN214036436U (en) * | 2020-12-11 | 2021-08-24 | 嘉兴合邦机械科技股份有限公司 | Concrete radial suspension self-tapping anchor bolt |
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2021
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| CN105840202A (en) * | 2016-03-29 | 2016-08-10 | 中铁时代建筑设计院有限公司 | Shield tail brush replacement annular freezing reinforcing water seal structure and construction method thereof |
| CN205677624U (en) * | 2016-06-27 | 2016-11-09 | 海南大学 | Shield docks semi-circular shape consolidation by freezing structure |
| CN206694036U (en) * | 2017-04-26 | 2017-12-01 | 海瑞克股份公司 | A kind of tail shield of the rock tunnel(ling) machine with integrated ground freezing pipe |
| CN212642720U (en) * | 2020-06-01 | 2021-03-02 | 宏润建设集团股份有限公司 | Indirect freezing device and freezing system |
| CN214036436U (en) * | 2020-12-11 | 2021-08-24 | 嘉兴合邦机械科技股份有限公司 | Concrete radial suspension self-tapping anchor bolt |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116044442A (en) * | 2023-03-31 | 2023-05-02 | 中建交通建设集团有限公司 | Butt joint section structure in shield ground and construction method thereof |
| CN116044442B (en) * | 2023-03-31 | 2023-06-02 | 中建交通建设集团有限公司 | Butt joint section structure in shield ground and construction method thereof |
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| CN114060038B (en) | 2024-02-13 |
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