CN108678774A - A kind of section of jurisdiction with freezing function - Google Patents
A kind of section of jurisdiction with freezing function Download PDFInfo
- Publication number
- CN108678774A CN108678774A CN201810691751.0A CN201810691751A CN108678774A CN 108678774 A CN108678774 A CN 108678774A CN 201810691751 A CN201810691751 A CN 201810691751A CN 108678774 A CN108678774 A CN 108678774A
- Authority
- CN
- China
- Prior art keywords
- section
- jurisdiction
- freezing
- cryovial
- water inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The invention discloses a kind of sections of jurisdiction with freezing function, the section of jurisdiction of the complete loop tunnel section of jurisdiction of a ring is spliced to form including several head and the tail, further include several cryovials being embedded in each section of jurisdiction, each cryovial is connected with water inlet pipe and outlet pipe, one of water inlet pipe and an outlet pipe are connect with external refrigerating machine, remaining water inlet pipe and outlet pipe join end to end to form freezing conduit.This section of jurisdiction with freezing function; cryovial in each section of jurisdiction is interconnected to form refrigerating circuit; cryogenic freezing liquid is delivered to cryovial by external refrigerating machine; to which the soil at shield drive end unit be freezed; form the annular frozen soil reinforcing area with sealing effect; protection herein it is lower can it is in office where layer carries out exchanging shield ventral brush operation, to ensure construction safety, the invention is for shield machine technical field.
Description
Technical field
The present invention relates to shield machine technical fields, more particularly to a kind of section of jurisdiction with freezing function.
Background technology
Subway segment belongs to the cement products that technology content is higher, particularly severe to technique and quality requirements, as shield
The tunnel structure main body of method construction, it is mainly used for building subway or large-scale pipeline engineering etc..Common subway tunnel section of jurisdiction is
Reinforced concrete structure, it is usually piecemeal segmented assembly that the geometry of section of jurisdiction product, which is arc plate,.Section of jurisdiction is used in tunnel
In shield construction, after shield machine cuts forward soil propulsion, several sections of jurisdiction are just combined into a ring round tunnel internal, then use bolt
Connection fastening, forms the lining cutting in tunnel, bears soil pressure.Structure of the subway segment as tunnel support system, is tunnel structure
Part and parcel；It is the outermost layer barrier in tunnel, carries and resist earth pressure, groundwater pressure and some special loads
Effect.Assembled while tunnel promotes, section of jurisdiction quality is directly related to the total quality and safety in tunnel, influences tunnel
Water resistance and endurance quality.
Urban rail transit in China, seepage tunnel, electric power tunnel are greatly developed at this stage, the variation of Tunnel Passing regional geology
It is larger, in a large amount of complex ground.In shield-tunneling construction, after shield machine promotes over long distances, the shield tail brush of tail portion can be due to abrasion
Damage, loses sealing function, must replace shield tail brush at this time, and above-described subway tunnel section of jurisdiction can only play support and waterproof
Effect, this section of jurisdiction cannot be satisfied shield machine and replace shield machine in special formation (soft stratums such as crevice water, layer of sand)
The requirement of shield tail brush.Therefore, larger construction risk or higher construction are caused to constructing tunnel during replacing shield tail brush
Cost.
Invention content
The purpose of the present invention is to provide the low band freezings of a kind of guarantee exchanging shield ventral brush construction safety and construction cost
The section of jurisdiction of function.
The technical solution used in the present invention is：
A kind of section of jurisdiction with freezing function, including several head and the tail are spliced to form the pipe of the complete loop tunnel section of jurisdiction of a ring
Piece further includes several cryovials being embedded in each section of jurisdiction, and each cryovial is connected with water inlet pipe and outlet pipe, one of water inlet
Pipe and an outlet pipe are connect with external refrigerating machine, remaining water inlet pipe and outlet pipe join end to end to form freezing conduit.
It is further used as the improvement of technical solution of the present invention, each water inlet pipe and outlet pipe extend to the inside of section of jurisdiction, also wrap
It includes several connection water inlet pipes and outlet pipe forms the external connecting pipe of "u"-shaped.
It is further used as the improvement of technical solution of the present invention, the outside of each cryovial is equipped with arc-shaped freezing plate, freezing
Plate is embedded in the outer circumference surface of section of jurisdiction, and cryovial is close to freezing plate.
Be further used as the improvement of technical solution of the present invention, freezing pipeline has a two-way, two-way freeze pipeline independently of each other and
It is arranged in parallel.
Be further used as the improvement of technical solution of the present invention, cryovial is shape tube, the cross section of cryovial be it is trapezoidal, it is cold
The upper surface of frozen pipe is in flat, and the width of cryovial upper surface is more than the width of lower surface.
It is further used as the improvement of technical solution of the present invention, inside, cryovial and the water inlet pipe and outlet pipe of freezing plate
Periphery be all covered with insulating layer, insulating layer uses thermal insulation material.
It is further used as the improvement of technical solution of the present invention, the outer side covering matcoveredn of insulating layer, protective layer uses steel
Plate, protective layer are equipped with corrosion-inhibiting coating.
It is further used as the improvement of technical solution of the present invention, the side of freezing plate is equipped with protrusion, another freezing plate on side
Side be equipped with and overlapped groove raised mutually.
It is further used as the improvement of technical solution of the present invention, is additionally provided with several radial thermometrics across freezing plate and section of jurisdiction
Thief hole is equipped with temperature sensor in each thermometric thief hole.
It is further used as the improvement of technical solution of the present invention, the water inlet pipe and water outlet pipe part being connect with external refrigerating machine are equipped with
Temperature sensor and flow sensor.
Beneficial effects of the present invention：This section of jurisdiction with freezing function, several sections of jurisdiction are spliced to form complete loop tunnel pipe
Piece, the cryovial in each section of jurisdiction are interconnected to form refrigerating circuit, cryogenic freezing liquid are delivered to freezing by external refrigerating machine
Pipe, and soil is transferred its energy to, to freeze the soil at shield drive end unit, form the annular with sealing effect
Frozen soil reinforcing area, shield machine protect herein under can it is in office where layer carry out exchanging shield ventral brush operation, to ensure construction safety,
And it is simple in structure, construction cost is low.
Description of the drawings
The invention will be further described below in conjunction with the accompanying drawings：
Fig. 1 is the front view of the embodiment of the present invention；
Fig. 2 is the vertical view expanded view of one section of jurisdiction of first embodiment of the invention；
Fig. 3 is the sectional view of the parts A-A in first embodiment of the invention Fig. 1；
Fig. 4 is the vertical view expanded view of one section of jurisdiction of second embodiment of the invention；
Fig. 5 is the sectional view of the parts C-C in second embodiment of the invention Fig. 4；
Fig. 6 is the sectional view of the parts A-A in second embodiment of the invention Fig. 1.
Specific implementation mode
Referring to Fig.1~Fig. 6, the present invention is a kind of section of jurisdiction with freezing function, including to be spliced to form a ring complete for several head and the tail
The section of jurisdiction 1 of whole loop tunnel section of jurisdiction, further includes several cryovials 21 being embedded in each section of jurisdiction 1, and each cryovial 21 is connected with
Water inlet pipe 22 and outlet pipe 23, one of water inlet pipe 22 and an outlet pipe 23 are connect with external refrigerating machine, remaining water inlet pipe
22 and outlet pipe 23 join end to end to form freezing pipeline 2 circuit.
This section of jurisdiction with freezing function, several sections of jurisdiction 1 are spliced to form complete loop tunnel section of jurisdiction, cold in each section of jurisdiction 1
Frozen pipe 21 is interconnected to form refrigerating circuit, and cryogenic freezing liquid is delivered to cryovial 21 by external refrigerating machine, and by energy
It is transferred to soil, to freeze the soil at shield drive end unit 7, forms the annular frozen soil stabilization zone with sealing effect
Domain, shield machine protect herein under can it is in office where layer carries out 8 replacement operation of shield tail brush, to ensure construction safety, and structure letter
Single, construction cost is low.
Specifically, loop tunnel section of jurisdiction uses the block form of 5+1, as shown in Figure 1, one of is the block that binds, also may be used
The variation of form is carried out according to Practical Project situation using other block forms, such as form of 6+1 or 7+1.
It uses multichannel freezing pipeline 2 to ensure refrigerating effect, freezes pipeline more than 2, the soil volume and range freezed are got over
Greatly, construction operation is safer.
As the preferred embodiment of the present invention, each water inlet pipe 22 and outlet pipe 23 extend to the inside of section of jurisdiction 1, water inlet pipe
22 and outlet pipe 23 be respectively arranged on the head end and tail end of cryovial 21, further include several connection water inlet pipes 22 and the formation of outlet pipe 23
The external connecting pipe 24 of "u"-shaped.Arrangement and the company of cryovial 21, water inlet pipe 22, outlet pipe 23 and external connecting pipe 24
Connect compact-sized, contact of the reduction with external environment, to reduce energy loss.
As the preferred embodiment of the present invention, the outside of each cryovial 21 is equipped with arc-shaped freezing plate 3, freezing plate 3
It is embedded in the outer circumference surface of section of jurisdiction 1, cryovial 21 is close to freezing plate 3, and cryovial 21 first freezes freezing plate 3, freezing plate 3 and soil
Earth is in direct contact, and freezing plate 3 has larger surface area, to the soil of 3 top of quick freezing freezing plate.Using freezing plate 3
Freezing soil, although increasing primary energy transmission, heat is transferred to freezing plate 3 again to cryovial 21 and cryogenic freezing from soil
Liquid, there are certain losses for energy, but freezing plate 3 has larger contact area with soil, and energy transmission is quicker, tool
The soil range bigger for having higher freezing efficiency, and freezing, construction operation are safer.
As the preferred embodiment of the present invention, using 3 freezing soil of freezing plate, the soil range freezed is increased, from
And the quantity of cryovial 21 can be reduced, in order to ensure that refrigerating effect, freezing pipeline 2 have two-way, it is mutual indepedent that two-way freezes pipeline 2
And it is arranged in parallel, as shown in Figures 2 and 3.
As the preferred embodiment of the present invention, cryovial 21 is shape tube, and the cross section of cryovial 21 is trapezoidal, freezing
The upper surface of pipe 21 is in flat, to which cryovial 21 is contacted with the contact of freezing plate 3 for face, increases contact area, is reduced
Energy loss, enhances refrigerating effect, and the width of 21 upper surface of cryovial is more than the width of lower surface.
As the preferred embodiment of the present invention, inside, cryovial 21 and the water inlet pipe 22 and outlet pipe 23 of freezing plate 3
Periphery be all covered with insulating layer 4, insulating layer 4 uses thermal insulation material, to prevent energy loss, ensures refrigerating effect, rises simultaneously
To certain sealing function.
As the preferred embodiment of the present invention, the outer side covering matcoveredn 5 of insulating layer 4, protective layer 5 uses steel plate,
Protective layer 5 is equipped with corrosion-inhibiting coating.Protective layer 5 is used to fix cryovial 21 for protecting cryovial 21 and thermal insulation material
And freezing plate 3.
As the preferred embodiment of the present invention, the side of freezing plate 3 is equipped with protrusion 31, another freezing plate 3 on side
Side be equipped with mutually overlapped the groove 32 of protrusion 31, using overlapped, form connects two pieces of adjacent freezing plates 3, ensures freezing
Effect it is continuous.
As the preferred embodiment of the present invention, it is additionally provided with several radial thermometric samplings across freezing plate 3 and section of jurisdiction 1
Hole 6 is equipped with temperature sensor in each thermometric thief hole 6, in refrigerating process, can monitor the temperature of soil in real time, work as soil
Temperature can stop freezing when reaching requirement.Thermometric thief hole 6 is arranged in the end for the soil range for needing to freeze, and works as detection
Soil moisture when reaching requirement, the soil of front end also can reach defined requirement.Thermometric thief hole 6 can extend along soil direction
Certain depth, to monitor the temperature of the soil of deeper inside, to make more accurate judgement to the freezing efficiency of soil.
As the preferred embodiment of the present invention, temperature is equipped at the water inlet pipe 22 and outlet pipe 23 that are connect with external refrigerating machine
Spend sensor and flow sensor, to monitor the working condition of cryovial 21, safeguard work it is reliable, when there are abnormal conditions
When, it must shutdown inspection.
When section of jurisdiction 1 is using reinforced concrete segment, the structure for cryovial 21 and freezing plate 3 is shown as shown in Figures 2 and 3
It is intended to, when section of jurisdiction 1 is using steel construction section of jurisdiction, as shown in figures 4-6, since the excircle panel of steel construction section of jurisdiction uses steel plate,
Compared with armored concrete, steel plate has good heat conductivility, functions as freezing plate 3, therefore can not additionally be arranged
Freezing plate 3.
Certainly, the invention is not limited to the above embodiment, and those skilled in the art are without prejudice to originally
Equivalent modifications or replacement can be also made under the premise of spirit, these equivalent modifications or replacement are all contained in the application right
It is required that in limited range.
Claims (10)
1. a kind of section of jurisdiction with freezing function, it is characterised in that：It is spliced to form the complete loop tunnel of a ring including several head and the tail
The section of jurisdiction (1) of section of jurisdiction further includes several cryovials (21) being embedded in each section of jurisdiction (1), and each cryovial (21) is even
It is connected to water inlet pipe (22) and outlet pipe (23), one of them described water inlet pipe (22) and an outlet pipe (23) and external refrigerating machine
Connection, remaining described water inlet pipe (22) and outlet pipe (23) join end to end to form freezing pipeline (2) circuit.
2. the section of jurisdiction according to claim 1 with freezing function, it is characterised in that：Each water inlet pipe (22) and outlet pipe
(23) inside for extending to the section of jurisdiction (1) further includes that several connections water inlet pipe (22) and outlet pipe (23) form " u "-shaped
The external connecting pipe (24) of structure.
3. the section of jurisdiction according to claim 1 with freezing function, it is characterised in that：It is set on the outside of each cryovial (21)
There are arc-shaped freezing plate (3), the freezing plate (3) to be embedded in the outer circumference surface of the section of jurisdiction (1), the cryovial (21) is tight
Paste the freezing plate (3).
4. the section of jurisdiction according to claim 3 with freezing function, it is characterised in that：The freezing pipeline (2) has a two-way, and two
It is mutual indepedent and arranged in parallel that pipeline (2) is freezed described in road.
5. the section of jurisdiction according to claim 3 with freezing function, it is characterised in that：The cryovial (21) is shape tube,
The cross section of the cryovial (21) is trapezoidal, and the upper surface of the cryovial (21) is in flat, on the cryovial (21)
The width on surface is more than the width of lower surface.
6. the section of jurisdiction according to claim 3 with freezing function, it is characterised in that：It is the inside of the freezing plate (3), described
Cryovial (21) and the periphery of water inlet pipe (22) and outlet pipe (23) are all covered with insulating layer (4), and the insulating layer (4) uses
Thermal insulation material.
7. the section of jurisdiction according to claim 6 with freezing function, it is characterised in that：The outer side covering of the insulating layer (4)
Matcoveredn (5), the protective layer (5) use steel plate, the protective layer (5) to be equipped with corrosion-inhibiting coating.
8. the section of jurisdiction according to claim 3 with freezing function, it is characterised in that：The side of the freezing plate (3) is equipped with
Raised (31), the side of another freezing plate (3) on side are equipped with and raised (31) mutually overlapped groove (32).
9. the section of jurisdiction according to claim 3 with freezing function, it is characterised in that：It is additionally provided with several across the freezing plate
(3) and the radial thermometric thief hole (6) of section of jurisdiction (1) temperature sensor, is installed in each thermometric thief hole (6).
10. the section of jurisdiction with freezing function according to any one of claim 1~9, it is characterised in that：With external refrigerating system
It is equipped with temperature sensor and flow sensor at the water inlet pipe (22) and outlet pipe (23) of machine connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810691751.0A CN108678774A (en) | 2018-06-28 | 2018-06-28 | A kind of section of jurisdiction with freezing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810691751.0A CN108678774A (en) | 2018-06-28 | 2018-06-28 | A kind of section of jurisdiction with freezing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108678774A true CN108678774A (en) | 2018-10-19 |
Family
ID=63812732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810691751.0A Pending CN108678774A (en) | 2018-06-28 | 2018-06-28 | A kind of section of jurisdiction with freezing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108678774A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236323A (en) * | 2018-11-27 | 2019-01-18 | 上海应用技术大学 | A kind of extremely frigid zones duct pieces of shield tunnel back-grouting insulation construction |
| CN110905561A (en) * | 2019-12-16 | 2020-03-24 | 兰州理工大学 | Weak surrounding rock tunnel freezing initial support structure and construction method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251015A (en) * | 2008-04-02 | 2008-08-27 | 上海隧道工程股份有限公司 | Construction method for exchanging shield ventral brush |
| CN101463724A (en) * | 2008-12-30 | 2009-06-24 | 上海隧道工程股份有限公司 | Construction method for connection passage by double-row hole horizontal freezing method |
| CN202645575U (en) * | 2012-05-31 | 2013-01-02 | 中铁隧道股份有限公司 | Curtain liquefrozen reinforcement structure for replacing ventral brush in shield tunnel hole |
| CN202731930U (en) * | 2012-06-28 | 2013-02-13 | 顾强 | Shield segment for compensating freezing at metro connecting passage part |
| 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 |
| CN206636565U (en) * | 2017-04-10 | 2017-11-14 | 中铁十四局集团有限公司 | Slurry shield exchanging shield ventral brush liquid nitrogen freezing safety guard under a kind of high hydraulic condition |
| CN208564570U (en) * | 2018-06-28 | 2019-03-01 | 广东华隧建设集团股份有限公司 | A kind of section of jurisdiction with freezing function |
-
2018
- 2018-06-28 CN CN201810691751.0A patent/CN108678774A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251015A (en) * | 2008-04-02 | 2008-08-27 | 上海隧道工程股份有限公司 | Construction method for exchanging shield ventral brush |
| CN101463724A (en) * | 2008-12-30 | 2009-06-24 | 上海隧道工程股份有限公司 | Construction method for connection passage by double-row hole horizontal freezing method |
| CN202645575U (en) * | 2012-05-31 | 2013-01-02 | 中铁隧道股份有限公司 | Curtain liquefrozen reinforcement structure for replacing ventral brush in shield tunnel hole |
| CN202731930U (en) * | 2012-06-28 | 2013-02-13 | 顾强 | Shield segment for compensating freezing at metro connecting passage part |
| 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 |
| CN206636565U (en) * | 2017-04-10 | 2017-11-14 | 中铁十四局集团有限公司 | Slurry shield exchanging shield ventral brush liquid nitrogen freezing safety guard under a kind of high hydraulic condition |
| CN208564570U (en) * | 2018-06-28 | 2019-03-01 | 广东华隧建设集团股份有限公司 | A kind of section of jurisdiction with freezing function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236323A (en) * | 2018-11-27 | 2019-01-18 | 上海应用技术大学 | A kind of extremely frigid zones duct pieces of shield tunnel back-grouting insulation construction |
| CN110905561A (en) * | 2019-12-16 | 2020-03-24 | 兰州理工大学 | Weak surrounding rock tunnel freezing initial support structure and construction method |
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