CN206888996U - A kind of shield sky pushes through the section of jurisdiction float Structure of Tunneling by mining method - Google Patents
A kind of shield sky pushes through the section of jurisdiction float Structure of Tunneling by mining method Download PDFInfo
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- CN206888996U CN206888996U CN201720624997.7U CN201720624997U CN206888996U CN 206888996 U CN206888996 U CN 206888996U CN 201720624997 U CN201720624997 U CN 201720624997U CN 206888996 U CN206888996 U CN 206888996U
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- tunneling
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- mining method
- float structure
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Abstract
A kind of shield sky pushes through the section of jurisdiction float Structure of Tunneling by mining method, including being arranged on slip casting bag body of the Tunneling by mining method just between lining and shield duct piece, the opening end of slip casting bag body stretches out from the injected hole of shield duct piece, threaded two fluid grouting pipe component can be screwed at the injected hole of shield duct piece, cement mortar and waterglass are injected by two fluid grouting pipe component simultaneously to slip casting bag body, cloth bag can constrain the scope of float Structure body formation, bulk can be effectively formed fills the float Structure body just served as a contrast in Tunneling by mining method space between shield duct piece with some strength, it just serves as a contrast the space between shield duct piece with block face way of contact filling in Tunneling by mining method, it can effectively prevent stress raisers from causing cracking and the deformation of section of jurisdiction；Moreover, three spaced apart float Structure body scopes on shield duct piece top are larger, there is preferably parcel and lock ring to tunnel, be entirely limited the displacement and deformation of shield duct piece.
Description
Technical field
The present invention relates to shield tunnel construction technology field, more particularly to a kind of shield sky pushes through the section of jurisdiction of Tunneling by mining method
Float Structure.
Background technology
To ensure that shield makes smooth advances, tunnel trunk need to be passed through typically first using Mining Method when extremely hard rock and longer length
Row excavates, and after having performed the first lining structure of Tunneling by mining method, shield sky pushes away segment assembly by being commonly called as shield sky and pushing away.Shield sky pushes away
Cross after the completion of Tunneling by mining method construction, 200mm or so space between just serving as a contrast be present in usual shield duct piece and Tunneling by mining method, when
When slip casting is carried out after the gradual water-filling in this space or section of jurisdiction, section of jurisdiction top does not constrain, therefore section of jurisdiction can float, due to assembly
Shield duct piece is to be connected by screw bolts composition by different lining segments, when buoyancy is larger, during duct piece float upward, section of jurisdiction and section of jurisdiction it
Between joint and bolt hole at stress it is larger, often lead to segment damage, burst apart, faulting of slab ends etc. so that tunnel segment structure damages, simultaneously
Excessive deformation will cause Tunnel Design center line that deviation occurs, and no small difficulty is caused to follow-up track laying and operation etc.,
Even resulting in tunnel segment section structure transfinites, and causes greater loss.
Prior art often utilizes a kind of anti-duct piece float upward bolt of grouting borehole design of shield duct piece to solve duct piece float upward,
As shown in figure 1 and 2, the front end of bolt 1 has a steel column 2, and length is about 200mm, after empty ejector sleeve sheetmolding, by bolt
1 is screwed into the injected hole 4 of section of jurisdiction 3, and arriving Tunneling by mining method until the front end of steel column 2 top of bolt 1 just serves as a contrast 5, and section of jurisdiction is prevented so as to reach
The effect of floating and limitation Segment displacement.
However, prevent duct piece float upward from following defect be present by the bolt：
1st, because steel column is a facings at the beginning of pushing against Tunneling by mining method with the way of contact, with the progressively release of surrouding rock stress,
Under the buoyancy of section of jurisdiction and the dual superposition of surrouding rock stress, the concentrated force at injected hole is often larger, usually causes shield pipe
There is ring shake in piece bolt hole surrounding concrete；The mixed intensity of just lining spray is relatively low simultaneously, just serves as a contrast thinner thickness and crisp,
Easily first lining structure is damaged under excessive steel column concentrated force so that with the easy unstability of the point-supported tunnel segment structure of steel column,
Duct piece float upward displacement increases, tunnel segment structure damage；
2nd, by clock and watch orientation 10 o'clock direction, 12 o'clock direction, 2 o'clock direction arrange the bolt to reach constraint
The effect of section of jurisdiction position is limited, and obligatory point is less, due to being that point contacts between steel column and facings at the beginning of Tunneling by mining method, each contact point
Deformation it is asynchronous, uncoordinated, the position of section of jurisdiction can not be preferably fixed, at the faulting of slab ends and bolt hole between section of jurisdiction and section of jurisdiction
Concrete phenomenon of bursting apart still exist；
3rd, error during construction is just served as a contrast due to Tunneling by mining method, just the distance between lining is impossible with Tunneling by mining method for section of jurisdiction
It is just 200mm, accordingly, there exist the possibility for not having abutting to contact between steel column front end and facings at the beginning of Tunneling by mining method, actually applies
Man-hour usually needs the actual range of facings at the beginning of by measuring section of jurisdiction and Tunneling by mining method to adjust the length of steel column, is made to construction
Into larger inconvenience, therefore bolt not can manufacture, and influence construction speed.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of safe and reliable, easy for construction shield sky and push through Mining Method
The section of jurisdiction float Structure in tunnel.
Technical scheme used by solve above-mentioned technical problem：A kind of shield sky pushes through the section of jurisdiction anti-floating of Tunneling by mining method
Structure, the section of jurisdiction float Structure are in the upper half-turn part of shield duct piece, including are arranged on Tunneling by mining method just lining and shield
Slip casting bag body between section of jurisdiction, the injected hole that the opening end of the slip casting bag body is stretched out on shield duct piece, the shield duct piece
Threaded two fluid grouting pipe component can be screwed at injected hole, is injected simultaneously to slip casting bag body by the two fluid grouting pipe component
Cement mortar and waterglass slurry, until the quick initial set of the internal slurries of slip casting bag forms float Structure body, the float Structure body with
Block face way of contact filling just serves as a contrast the space between shield duct piece in Tunneling by mining method.
Further, the two fluid grouting pipe component outer wall has one section of external screw thread, and the injected hole inwall has interior spiral shell
Line, it is connected by screw thread and realizes that two fluid grouting pipe component is screwed into injected hole.
Further, the two fluid grouting pipe component, which has, stretches into internal first Grouting Pipe arranged side by side of slip casting bag and the second note
Slurry pipe.
Further, between the shield duct piece and Tunneling by mining method just serve as a contrast in the clock and watch orientation 10 o'clock direction,
12 o'clock direction, 2 o'clock direction form three float Structure bodies respectively.Certainly, according to practice of construction situation float Structure body
Orientation and quantity can adjust accordingly.
Further, the slip casting bag body is cloth bag, and the fabric number of the cloth bag is 40-80 branch, and cloth bag can constrain anti-
The scope that floating structure is formed, and cloth bag has certain gas permeability and compactness, slurries can full filling when may be such that slip casting
Bag body will not cause big slurries to be lost in again, can effectively form bulk the filling with some strength be in lining at the beginning of tunnel and
The grouting and reinforcing body in space between shield duct piece, the radius of cloth bag can be 0.2~0.5m, and depth can be 1.0~1.5m, also can root
Cloth bag size is determined according to actual requirement of engineering, when necessary the superposition of two or more sacks can be used to use.
Beneficial effect：In this section of jurisdiction float Structure, by slip casting bag body and two fluid grouting pipe component at the beginning of Tunneling by mining method
Quick between lining and shield duct piece to form block float Structure body, it is in Tunneling by mining method with block face way of contact filling
The just space between lining and shield duct piece, can effectively prevent stress raisers from causing cracking and the deformation of section of jurisdiction；Moreover, shield
Three spaced apart float Structure bodies on structure section of jurisdiction top form large range of block filling, have preferably parcel and
Lock ring, the displacement and deformation of shield duct piece have been entirely limited it.Shield sky of the present invention pushes through the section of jurisdiction float Structure of Tunneling by mining method
And construction method can efficiently solve shield sky push through Tunneling by mining method duct piece float upward cause Segment cracking, breakage, faulting of slab ends and
The problems such as tunnel disalignment is excessive, while solve using phase caused by the stresses in segments concentration for setting steel column anti-floating to bring
Pass problem, ensure the construction quality in tunnel, reduce the cracking seepage of section of jurisdiction and the damaged expense for deforming, reducing later stage operation maintenance
With.
Brief description of the drawings
The present invention is described further with reference to the accompanying drawings and examples；
Fig. 1 is that prior art prevents duct piece float upward structural representation；
Fig. 2 is the structural representation for preventing duct piece float upward bolt in the prior art；
Fig. 3 is section of jurisdiction of embodiment of the present invention float Structure schematic diagram；
Fig. 4 is the structural representation of two fluid grouting pipe in the embodiment of the present invention.
Embodiment
Reference picture 3 and Fig. 4, a kind of shield sky of the utility model pushes through the section of jurisdiction float Structure of Tunneling by mining method, including sets
It is three to put the float Structure body 41 between lining 20 and shield duct piece 10, its quantity at the beginning of Tunneling by mining method, is respectively at clock and watch
In orientation 10 o'clock direction, 12 o'clock direction, 2 o'clock direction, certainly, according to the orientation of practice of construction situation float Structure body
It can be adjusted accordingly with quantity.Float Structure body 41 is by just serving as a contrast the slip casting between 20 to shield duct piece 10 and Tunneling by mining method
The slip casting of bag body 42 is formed, and specifically, the opening end of slip casting bag body 42 stretches out from the injected hole 11 of shield duct piece 10, shield duct piece 10
Injected hole 11 at can be screwed into threaded two fluid grouting pipe component 30, the outer wall of two fluid grouting pipe component 30 has one section of outer spiral shell
Line, the inwall of injected hole 11 on shield duct piece 10 have internal thread, pass through screw thread and are connected and threaded biliquid can be achieved note
Slurry pipe component 30 is screwed into injected hole 11.
Wherein, threaded two fluid grouting pipe component 30, which has, stretches into slip casting bag the first Grouting Pipe 31 arranged side by side and the in vivo
Two Grouting Pipes 32, it is connected respectively with cement mortar flexible pipe and waterglass slurry flexible pipe, passes through the first Grouting Pipe 31 and the second Grouting Pipe
32, respectively by cement mortar and waterglass slurry injection slip casting bag body, inject cement mortar and waterglass simultaneously because slip casting bag body 42 is interior
Slurry, and waterglass slurry has a fast freezing action, and the slurries in slip casting bag body 42 can quickly solidify sizing, and reach necessarily by force
Degree, slip casting bag body 42 provide a quick resolidified region for slurries, prevent slurries from fleeing.
Slip casting bag body 42 uses a kind of frivolous cloth bag, and cloth bag can constrain the scope of float Structure body formation, and cloth bag has
Certain gas permeability and compactness, the full filling baggy fabric body of slurries energy will not cause big slurries to be lost in again when may be such that slip casting, can
The filling with some strength for effectively forming bulk is in Tunneling by mining method just space 40 between lining 20 and shield duct piece 10
Float Structure body 41, the fabric number of cloth bag can be 40~80, and cloth bag radius can be 0.2~0.5m, depth can for 1.0~
1.5m, cloth bag size can be also determined according to actual requirement of engineering, when necessary the superposition of two or more sacks can be used to use.
The float Structure body 41 of bulk is formed to the slip casting of slip casting bag body 42, it fills Mining Method tunnel with the block face way of contact
Road just serves as a contrast the space between shield duct piece, can effectively prevent stress raisers from causing cracking and the deformation of section of jurisdiction；Moreover,
Three spaced apart scopes of float Structure body 41 on shield duct piece top are larger, have preferably parcel and lock ring to tunnel,
It has been entirely limited the displacement and deformation of shield duct piece.
Embodiments of the present invention are explained in detail above in conjunction with accompanying drawing, but the invention is not restricted to above-mentioned embodiment party
Formula, can also be before present inventive concept not be departed from the technical field those of ordinary skill possessed knowledge
Put that various changes can be made.
Claims (5)
1. a kind of shield sky pushes through the section of jurisdiction float Structure of Tunneling by mining method, the section of jurisdiction float Structure is in the upper of shield duct piece
Half-turn part, it is characterised in that：Including being arranged on slip casting bag body of the Tunneling by mining method just between lining and shield duct piece, the slip casting
The injected hole that the opening end of bag body is stretched out on shield duct piece, threaded biliquid note can be screwed at the injected hole of the shield duct piece
Pipe component is starched, cement mortar is injected to slip casting bag body by the two fluid grouting pipe component simultaneously and waterglass is starched, until slip casting bag
The quick initial set of internal slurries forms float Structure body, and the float Structure body is in Mining Method with block face way of contact filling
Tunnel just serves as a contrast the space between shield duct piece.
2. shield sky according to claim 1 pushes through the section of jurisdiction float Structure of Tunneling by mining method, it is characterised in that：It is described double
Liquid grout pipe component outer wall has one section of external screw thread, and the injected hole inwall has internal thread, is connected and realized by screw thread
Two fluid grouting pipe component is screwed into injected hole.
3. shield sky according to claim 1 or 2 pushes through the section of jurisdiction float Structure of Tunneling by mining method, it is characterised in that：Institute
State two fluid grouting pipe component and have and stretch into slip casting bag the first Grouting Pipe and the second Grouting Pipe arranged side by side in vivo.
4. shield sky according to claim 1 or 2 pushes through the section of jurisdiction float Structure of Tunneling by mining method, it is characterised in that：Institute
State shield duct piece and Tunneling by mining method just serve as a contrast between in clock and watch orientation 10 o'clock direction, 12 o'clock direction, 2 o'clock direction
Three float Structure bodies are formed respectively.
5. shield sky according to claim 1 or 2 pushes through the section of jurisdiction float Structure of Tunneling by mining method, it is characterised in that：Institute
It is cloth bag to state slip casting bag body, and the fabric number of the cloth bag is 40-80 branch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720624997.7U CN206888996U (en) | 2017-05-31 | 2017-05-31 | A kind of shield sky pushes through the section of jurisdiction float Structure of Tunneling by mining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720624997.7U CN206888996U (en) | 2017-05-31 | 2017-05-31 | A kind of shield sky pushes through the section of jurisdiction float Structure of Tunneling by mining method |
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| CN206888996U true CN206888996U (en) | 2018-01-16 |
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| CN201720624997.7U Active CN206888996U (en) | 2017-05-31 | 2017-05-31 | A kind of shield sky pushes through the section of jurisdiction float Structure of Tunneling by mining method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130979A (en) * | 2017-05-31 | 2017-09-05 | 广州市市政工程设计研究总院 | A kind of shield sky pushes through the section of jurisdiction float Structure and construction method of Tunneling by mining method |
| CN109653767A (en) * | 2018-11-12 | 2019-04-19 | 西南交通大学 | For the anti-floating type section of jurisdiction of shield tunnel and its processing method and application method |
| CN109723465A (en) * | 2019-03-19 | 2019-05-07 | 成都理工大学 | TBM rock tunnel(ling) machine section of jurisdiction righting method |
| CN109973116A (en) * | 2019-03-11 | 2019-07-05 | 中铁十二局集团第二工程有限公司 | A kind of tunnel segment structure and its construction method of the anti-floating of shield tunnel |
| CN110242331A (en) * | 2019-07-29 | 2019-09-17 | 西南交通大学 | A method of pipe-plate lining ring anti-floating is assisted for the anti-floating system in shield tunnel and using it |
| CN111779495A (en) * | 2020-08-13 | 2020-10-16 | 中建八局轨道交通建设有限公司 | Construction method for restraining floating amount of shield tunnel segment |
| CN113958343A (en) * | 2021-05-10 | 2022-01-21 | 南昌轨道交通集团有限公司 | Structure and method for restraining upward floating of duct piece in full-section rock stratum shield tunnel |
-
2017
- 2017-05-31 CN CN201720624997.7U patent/CN206888996U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130979A (en) * | 2017-05-31 | 2017-09-05 | 广州市市政工程设计研究总院 | A kind of shield sky pushes through the section of jurisdiction float Structure and construction method of Tunneling by mining method |
| CN109653767A (en) * | 2018-11-12 | 2019-04-19 | 西南交通大学 | For the anti-floating type section of jurisdiction of shield tunnel and its processing method and application method |
| CN109653767B (en) * | 2018-11-12 | 2023-09-15 | 西南交通大学 | Anti-floating duct piece for shield tunnel, and processing method and using method thereof |
| CN109973116A (en) * | 2019-03-11 | 2019-07-05 | 中铁十二局集团第二工程有限公司 | A kind of tunnel segment structure and its construction method of the anti-floating of shield tunnel |
| CN109973116B (en) * | 2019-03-11 | 2020-09-22 | 中铁十二局集团第二工程有限公司 | Shield tunnel floating-up prevention segment structure and construction method thereof |
| CN109723465A (en) * | 2019-03-19 | 2019-05-07 | 成都理工大学 | TBM rock tunnel(ling) machine section of jurisdiction righting method |
| CN110242331A (en) * | 2019-07-29 | 2019-09-17 | 西南交通大学 | A method of pipe-plate lining ring anti-floating is assisted for the anti-floating system in shield tunnel and using it |
| CN110242331B (en) * | 2019-07-29 | 2024-03-26 | 西南交通大学 | Anti-floating device for shield tunnel and method for assisting segment lining ring anti-floating by adopting anti-floating device |
| CN111779495A (en) * | 2020-08-13 | 2020-10-16 | 中建八局轨道交通建设有限公司 | Construction method for restraining floating amount of shield tunnel segment |
| CN113958343A (en) * | 2021-05-10 | 2022-01-21 | 南昌轨道交通集团有限公司 | Structure and method for restraining upward floating of duct piece in full-section rock stratum shield tunnel |
| CN113958343B (en) * | 2021-05-10 | 2024-04-02 | 南昌轨道交通集团有限公司 | Structure and method for restraining floating of segment of full-section stratum shield tunnel |
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Address after: 510060 East seat, No. 348 East Ring Road, Guangzhou, Guangdong, Yuexiu District Patentee after: Guangzhou municipal engineering design and Research Institute Co., Ltd. Address before: 510060, No. 95, Guangzhou Avenue, Tianhe District, Guangdong, Guangzhou Patentee before: Guangzhou City Engineering Design studies total institute |
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