CN208330417U - Shield tunnel shearing resistance formula whirl spraying is freezed to block iterative structure - Google Patents
Shield tunnel shearing resistance formula whirl spraying is freezed to block iterative structure Download PDFInfo
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- CN208330417U CN208330417U CN201820973947.4U CN201820973947U CN208330417U CN 208330417 U CN208330417 U CN 208330417U CN 201820973947 U CN201820973947 U CN 201820973947U CN 208330417 U CN208330417 U CN 208330417U
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Abstract
Freeze to block iterative structure the utility model discloses shield tunnel shearing resistance formula whirl spraying, comprising: whirl spraying wall is set to intact section of jurisdiction side, and the height of the whirl spraying wall is not less than section of jurisdiction internal diameter；Freeze wall, it is also set to intact section of jurisdiction side, and it is described freeze wall and the whirl spraying wall overlapping and in section of jurisdiction formed whirl spraying freeze wall, the height for freezing wall is greater than the height of the whirl spraying wall, it is described freeze wall along tunnel longitudinal direction thickness be less than the whirl spraying wall along tunnel longitudinal direction thickness, it is described freeze wall along tunnel circumferential direction width greater than the whirl spraying wall along tunnel circumferential direction width；And freezing the freezing pipe in wall is double-deck pipe body structure.The utility model shearing strength height, thickness of wall body is small compared with conventional articulated gravity wall, promotion work efficiency, reduces the difficulty that later period block wall is removed, and by reinforcing to freezing pipe pre-pouring grout, and stratum settlement after the better control freezing method construction of energy reduces the influence to construction environment.
Description
Technical field
The utility model relates to constructing tunnel fields.More specifically, the utility model relates to the rotations of shield tunnel shearing resistance formula
Spray is freezed to block iterative structure.
Background technique
City underground is greatly developed, and is brought convenience fast to urban development, while its construction also cause it is more and more
Safety problem.Since subway is located in city busiest section, surrounding buildings dense distribution, underground utilities are numerous, once engineering occurs
Accident will generate significant impact, attract extensive attention.In recent years, there is shield on the ground such as Shanghai, Hangzhou, Nanjing, Tianjin, Guangzhou
The relevant report of structure constructing tunnel landslide.
Shield tunnel buried depth is larger, once Tunnel Landslide occurs, reparation difficulty is larger, and tunnel blocks the reliable of water sealing structure
Property be influence later period tunnel dredging safety key factor, handle it is bad easily initiation second accident.Therefore it needs to design one kind
Shield tunnel shearing resistance formula whirl spraying is freezed to block iterative structure and method, it is ensured that tunnel dredging repair safely and fast carries out, should
Structure and construction method application value with higher.
Utility model content
Freeze to block iterative structure the purpose of the utility model is to provide shield tunnel shearing resistance formula whirl spraying, first passes through whirl spraying
Cavity that may be present in wall structure filling section of jurisdiction creates basic condition for consolidation by freezing, then in whirl spraying wall knot
Consolidation by freezing is carried out in structure, solves plugging structure seepage problem, and freezes main water and soil when wall undertakes subsequent tunnel dredging
Pressure, safety coefficient is higher, shield tunnel shearing resistance formula whirl spraying described in the utility model freeze block iterative structure shearing strength compared with
Height, for conventional articulated gravity formula wall, thickness of wall body is greatly reduced, and improves work efficiency, while also being reduced later period block wall and being removed
Difficulty.
In order to realize these purposes and other advantages according to the present utility model, shield tunnel shearing resistance formula whirl spraying jelly is provided
Knot blocks iterative structure, comprising:
Whirl spraying wall, is set to intact section of jurisdiction side, and the height of the whirl spraying wall is not less than section of jurisdiction internal diameter；
Freeze wall, be set to intact section of jurisdiction side, and the wall that freezes is with whirl spraying wall overlapping and in section of jurisdiction
It forms whirl spraying and freezes wall, and the height for freezing wall is greater than the height of the whirl spraying wall, the wall that freezes is along tunnel
The thickness of road longitudinal direction is less than the whirl spraying wall along the thickness of tunnel longitudinal direction, and the wall that freezes is greater than along the width of tunnel circumferential direction
Width of the whirl spraying wall along tunnel circumferential direction.
Preferably, the wall that freezes exceeds section of jurisdiction vault in its short transverse respectively and encircles bottom outer profile at least 2m,
It is described that freeze wall at it be more than section of jurisdiction two sides at least 1m along the horizontal width direction of tunnel circumferential direction respectively.
Preferably, the shield tunnel shearing resistance formula whirl spraying is freezed to block iterative structure to further include freezing pipe, described to freeze
Pipe is located at the inside for freezing wall, and spacing of the freezing pipe along tunnel longitudinal direction is not more than 1.2m, along the row of tunnel circumferential direction
Away from no more than 1.4m.
Preferably, the freezing pipe includes cryovial, grout outlet and drill bit, and the grout outlet spacer sleeve is set to described cold
Frozen pipe is outer and the two axis is overlapped, and one end of the grout outlet is located at ipsilateral opening with cryovial and is connected by sealing bottom surface,
The drill bit is pyramidal structure, and cone-shaped cavity is connect and formed between bottom surface with the bottom surface, and along week on the bottom surface
To several logical slurry holes are equipped with, the cavity freezed between pipe outer wall and pulp inside pipe wall is connected to the cone-shaped cavity, it is described
It is additionally provided with several slurry outlets on grout outlet, several slots are additionally provided on the drill bit.
The utility model is include at least the following beneficial effects:
1, the present invention first passes through cavity that may be present in rotary churning pile structure filling section of jurisdiction, creates base for consolidation by freezing
Then plinth condition carries out consolidation by freezing in whirl spraying wall structure, solves plugging structure seepage problem, and freeze after wall undertakes
Main Water And Earth Pressures when continuous tunnel dredging, safety coefficient are higher；
2, it is higher to freeze iterative structure shearing strength for the whirl spraying that uses of the present invention, for conventional articulated gravity formula wall, wall
Thickness greatly reduces, and improves work efficiency, while also reducing the difficulty that later period block wall is removed；
3, the freezing pipe with double-deck pipe body structure is used in the present invention, it can be by Grouting Pipe to freezing pipe and outside
The soil body carries out pre-pouring grout reinforcing, easy to operate, and stratum settlement after better control freezing method construction reduces the shadow to construction environment
It rings.
The further advantage, target and feature of the utility model will be partially reflected by the following instructions, and part will also pass through
Research and practice to the utility model and be understood by the person skilled in the art.
Detailed description of the invention
Fig. 1 is that shield tunnel shearing resistance formula whirl spraying of the present invention is freezed to block the floor map of iterative structure；
Fig. 2 is the structural schematic diagram of the B-B section of Fig. 1 in the present invention；
Fig. 3 is the structural schematic diagram of the C-C section of Fig. 1 in the present invention；
Fig. 4 is the structural schematic diagram of freezing pipe of the present invention；
Fig. 5 is the structural schematic diagram of the A-A section of Fig. 4 in the present invention.
Description of symbols:
1- grout outlet；2- cryovial；3- drill bit；4- Grouting Pipe；5- slurry outlet；The bottom surface 6-；The logical slurry hole 7-；The section of jurisdiction 27-；
28- breakage section of jurisdiction side；The intact section of jurisdiction side 29-；30- freezing hole；31- whirl spraying stake holes；32- freezing pipe；33- whirl spraying wall；34- freezes
Tie wall；Wall is freezed in 35- whirl spraying.
Specific embodiment
The following describes the utility model in further detail with reference to the accompanying drawings, to enable those skilled in the art referring to explanation
Book text can be implemented accordingly.
It should be noted that in the description of the present invention, term " transverse direction ", " longitudinal direction ", "upper", "lower", " preceding ",
The orientation or positional relationship of the instructions such as " rear ", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" be based on
Orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, and is not instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
The limitation of the utility model.
Freeze to block iterative structure, packet as shown in Figure 1-3, the utility model provides the shield tunnel shearing resistance formula whirl spraying
It includes:
Whirl spraying wall 33, is set to intact section of jurisdiction side 29, and the height of the whirl spraying wall 33 is not less than 27 internal diameter of section of jurisdiction；
Freeze wall 34, be set to intact section of jurisdiction side 29, and the wall 34 that freezes overlaps simultaneously with the whirl spraying wall 33
Whirl spraying is formed in section of jurisdiction 27 and freezes wall 35, and the height for freezing wall 34 is greater than the height of the whirl spraying wall 33,
It is described freeze wall 34 along tunnel longitudinal direction thickness be less than the whirl spraying wall 33 along tunnel longitudinal direction thickness, it is described to freeze wall
34 along tunnel circumferential direction width be greater than the whirl spraying wall 33 along tunnel circumferential direction width.
In the above-mentioned technical solutions, L value is calculated according to the damaged position in section of jurisdiction 27, calculation formula is L=F/ π R2Ra,
Middle F is the lateral pressure of water and soil, and a coefficient of friction between plugging structure and section of jurisdiction, R is the internal diameter of section of jurisdiction, and r is the appearance of plugging structure
Weight, length of the whirl spraying wall 33 along tunnel longitudinal direction are more than or equal to L, and the height of whirl spraying wall 33 is not less than 27 internal diameter of section of jurisdiction,
To block 27 breakage of tunnel duct piece completely, and the whirl spraying wall 33 is set to intact section of jurisdiction side 29, to bear damaged section of jurisdiction
The shearing of side 28, the wall 34 that freezes also are set to intact section of jurisdiction side 29, freeze middle section and the whirl spraying wall 33 of wall 34
Middle section overlap to form whirl spraying and freeze wall 35, whirl spraying wall 33 is filled with cavity that may be present in section of jurisdiction 27, to freeze
Knot is reinforced and creates basic condition, and consolidation by freezing is then carried out in whirl spraying wall 33, solves plugging structure seepage problem, and
Freeze main Water And Earth Pressures when wall 34 undertakes subsequent tunnel dredging, safety coefficient is higher；And the height for freezing wall 34
Degree is greater than the height of the whirl spraying wall 33, it is described freeze wall 34 along tunnel longitudinal direction thickness less than 33 edge of whirl spraying wall
The thickness of tunnel longitudinal direction, it is described freeze wall 34 along tunnel circumferential direction width be greater than the whirl spraying wall 33 along tunnel circumferential direction width
Degree, shearing strength is higher to be formed, the more reasonable whirl spraying block wall 35 of structure, and for conventional articulated gravity formula wall, wall is thick
Degree greatly reduces, and improves work efficiency, while also reducing the difficulty of later period block wall removing.
In another technical solution, the wall 34 that freezes exceeds 27 vault of section of jurisdiction in its short transverse respectively and encircles bottom
Outer profile at least 2m, it is described freeze wall 34 its along the horizontal width direction of tunnel circumferential direction be more than respectively 27 two sides of section of jurisdiction at least
Tunnel duct piece 27 is completely encapsulated in and freezes in wall 34 by 1m, prevents plugging structure infiltration, destroys.
In another technical solution, the shield tunnel shearing resistance formula whirl spraying is freezed to block iterative structure to further include freezing pipe
32, the freezing pipe 32 is located at the inside for freezing wall 34, and spacing of the freezing pipe 32 along tunnel longitudinal direction is not more than
1.2m, the array pitch along tunnel circumferential direction are not more than 1.4m.
As illustrated in figures 4-5, in another technical solution, the freezing pipe 32 includes cryovial 2, grout outlet 1 and drill bit
3,1 spacer sleeve of grout outlet is set to outside the cryovial 2 and the two axis is overlapped, one end of the grout outlet 1 and cryovial 2
It is tightly connected positioned at ipsilateral opening by bottom surface 6, the drill bit 3 is pyramidal structure, and connect with the bottom surface 6 simultaneously and bottom surface
Cone-shaped cavity is formed between 6, and circumferentially arranged with several logical slurry holes 7 on the bottom surface 6, by 2 outer wall of cryovial and grout outlet 1
Cavity between inner wall is connected to the cone-shaped cavity, and several slurry outlets 5 are additionally provided on the grout outlet 1, are gone back on the drill bit 3
Equipped with several slots.
In the above-mentioned technical solutions, before frozen construction, the spiral winding on the outer wall of its cryovial 2 of freezing pipe 32
Grouting Pipe 4 carries out pre-pouring grout reinforcing to freezing pipe 32 by Grouting Pipe 4, in advance after the freezing pipe 32 is squeezed into freezing hole 30
Grouting Pipe 4 is fully drawn out from freezing pipe 32 after the completion of slip casting, then leads to cold liquid to freezing pipe 32, is carried out frozen construction and is formed
Freeze wall 34；Specifically, the freezing pipe 32 is the structure of double-deck pipe body, pass through between the cryovial 2 and grout outlet 1 of internal layer
The support connection of bottom surface 6, and spiral winding has Grouting Pipe 4 between cryovial 2 and grout outlet 1, when by Grouting Pipe 4 to freezing pipe 32
Carry out slip casting when, mortar can by being flowed out in the slurry outlet 5 on grout outlet 1, by the outer wall of freezing pipe 32 in conjunction with surrounding soil,
Mortar can also be entered in the cone-shaped cavity of drill bit 3 by the logical slurry hole 7 on bottom surface 6, and pass through the slot stream on drill bit 3
Out, the end and 30 bottom soil body of freezing hole for making freezing pipe 32 are firmly combined, and can lead in the cavity at 2 center of cryovial cold
Liquid is to freeze surrounding soil, it is preferred that the slurry outlet 5 is uniformly distributed in along the length direction circumferential direction of freezing pipe 32
The outer wall of the grout outlet 1, circumferential direction of the logical slurry hole 7 along the bottom surface 6 are uniformly distributed, and the slot is multiple, and along institute
The circumferential direction for stating drill bit 3 is uniformly distributed, before pre-pouring grout, by the Grouting Pipe 4 along the length direction uniform spiral of the freezing pipe 32
Winding；Carrying out frozen construction step using the freezing pipe 32 is to be positioned first according to the arrangement requirement of freezing hole 30 with drilling machine
Then aperture pierces freezing pipe 32, carry out pre-pouring grout by Grouting Pipe 4, makes for freezing pipe 32 and surrounding soil to be firmly combined, most
Afterwards to cold liquid is led in cryovial 2, carries out frozen construction formation and freeze wall 34, wherein during pre-pouring grout, on one side to note
Slurry pipe 4 carries out logical slurry, on one side gradually extracts Grouting Pipe 4 from freezing pipe 32, so that the mortar in Grouting Pipe 4 is from freezing pipe 32
Bottom be gradually filled up completely in the cavity between cryovial 2 and grout outlet 1 to top, reinforced by pre-pouring grout, can be more preferable
The construction of control freezing method after stratum settlement, reduce influence to construction environment, and easy to operate.
The formula whirl spraying of shield tunnel shearing resistance described in the present embodiment is freezed to block the construction procedure of iterative structure are as follows:
S1: laying whirl spraying stake holes 31 in intact section of jurisdiction side 29, and the whirl spraying stake holes 31 passes through 27 vault of section of jurisdiction and arch bottom,
Jet groutinl constructs to form whirl spraying wall 33 in whirl spraying stake holes 31；
S2: freezing hole 30 is laid outside 33 inside of whirl spraying wall and 33 horizontal width range of whirl spraying wall, wherein being located at rotation
The drilling center of circle of freezing hole 30 in spray wall 33 is overlapped with the drilling center of circle of whirl spraying stake holes 31, to reduce difficulty of construction, is improved
Then construction efficiency squeezes into freezing pipe 32 in the freezing hole 30；
S3: by Grouting Pipe 4 to freezing pipe 32 carry out pre-pouring grout, to Grouting Pipe 4 carry out slip casting during, gradually
The Grouting Pipe 4 is extracted out from the freezing pipe 32；
S4: leading to cold liquid in the cryovial 2 in freezing pipe 32, carries out frozen construction formation and freezes wall 34, makes the jelly
Knot wall 34 and the overlapping of whirl spraying wall 33 form whirl spraying and freeze wall 35.
It is not only in the description and the implementation although the embodiments of the present invention have been disclosed as above
Listed utilization, it can be applied to various fields suitable for the present invention completely, for those skilled in the art,
Other modifications may be easily implemented, therefore without departing from the general concept defined in the claims and the equivalent scope, this reality
It is not limited to specific details and legend shown and described herein with novel.
Claims (4)
1. shield tunnel shearing resistance formula whirl spraying is freezed to block iterative structure characterized by comprising
Whirl spraying wall, is set to intact section of jurisdiction side, and the height of the whirl spraying wall is not less than section of jurisdiction internal diameter；
Freeze wall, is set to intact section of jurisdiction side, and the wall that freezes is overlapped with the whirl spraying wall and formed in section of jurisdiction
Wall is freezed in whirl spraying, and the height for freezing wall is greater than the height of the whirl spraying wall, and the wall that freezes is indulged along tunnel
To thickness be less than the whirl spraying wall along tunnel longitudinal direction thickness, it is described freeze wall along tunnel circumferential direction width greater than described in
Width of the whirl spraying wall along tunnel circumferential direction.
2. shield tunnel shearing resistance formula whirl spraying as described in claim 1 is freezed to block iterative structure, which is characterized in that described to freeze
Wall exceeds section of jurisdiction vault in its short transverse respectively and encircles bottom outer profile at least 2m, described to freeze wall at it along tunnel circumferential direction
Horizontal width direction be respectively more than section of jurisdiction two sides at least 1m.
3. shield tunnel shearing resistance formula whirl spraying as claimed in claim 2 is freezed to block iterative structure, which is characterized in that further include freezing
Knot pipe, the freezing pipe are located at the inside for freezing wall, and spacing of the freezing pipe along tunnel longitudinal direction is not more than 1.2m, edge
The array pitch of tunnel circumferential direction is not more than 1.4m.
4. shield tunnel shearing resistance formula whirl spraying as claimed in claim 3 is freezed to block iterative structure, which is characterized in that described to freeze
Pipe includes cryovial, grout outlet and drill bit, and the grout outlet spacer sleeve is set to outside the cryovial and the two axis is overlapped, described
One end of grout outlet is located at ipsilateral opening with cryovial and is connected by sealing bottom surface, the drill bit be pyramidal structure, and with institute
It states bottom surface to connect and form cone-shaped cavity between bottom surface, and will be freezed on the bottom surface circumferentially arranged with several logical slurry holes
Cavity between pipe outer wall and pulp inside pipe wall is connected to the cone-shaped cavity, and several slurry outlets are additionally provided on the grout outlet,
Several slots are additionally provided on the drill bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820973947.4U CN208330417U (en) | 2018-06-22 | 2018-06-22 | Shield tunnel shearing resistance formula whirl spraying is freezed to block iterative structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820973947.4U CN208330417U (en) | 2018-06-22 | 2018-06-22 | Shield tunnel shearing resistance formula whirl spraying is freezed to block iterative structure |
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| Publication Number | Publication Date |
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| CN208330417U true CN208330417U (en) | 2019-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820973947.4U Active CN208330417U (en) | 2018-06-22 | 2018-06-22 | Shield tunnel shearing resistance formula whirl spraying is freezed to block iterative structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108729933A (en) * | 2018-06-22 | 2018-11-02 | 中交第二航务工程局有限公司 | Shield tunnel shearing resistance formula churning is freezed to block iterative structure and its construction method |
| CN110821504A (en) * | 2019-12-04 | 2020-02-21 | 中铁十二局集团有限公司 | Water-rich stratum shield starting end rotary spraying and freezing combined reinforcing structure and construction method |
-
2018
- 2018-06-22 CN CN201820973947.4U patent/CN208330417U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108729933A (en) * | 2018-06-22 | 2018-11-02 | 中交第二航务工程局有限公司 | Shield tunnel shearing resistance formula churning is freezed to block iterative structure and its construction method |
| CN110821504A (en) * | 2019-12-04 | 2020-02-21 | 中铁十二局集团有限公司 | Water-rich stratum shield starting end rotary spraying and freezing combined reinforcing structure and construction method |
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