CN207568622U - A kind of shield tunnel compaction grouting structure - Google Patents
A kind of shield tunnel compaction grouting structure Download PDFInfo
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- CN207568622U CN207568622U CN201721338303.XU CN201721338303U CN207568622U CN 207568622 U CN207568622 U CN 207568622U CN 201721338303 U CN201721338303 U CN 201721338303U CN 207568622 U CN207568622 U CN 207568622U
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- shield tunnel
- monitoring device
- injected hole
- grouting
- slip casting
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Abstract
The utility model provides a kind of shield tunnel compaction grouting structure, including shield tunnel, grouting device and monitoring device, the both sides of shield tunnel are respectively equipped with injected hole, grouting device includes Grouting Pipe and slip casting machine, the both ends of Grouting Pipe are connected respectively with injected hole and slip casting machine, monitoring device is installed on shield tunnel, and monitoring device includes stress monitor device and subsidence monitoring device, and stress monitor device and subsidence monitoring device are electrically connected with the controller.Using the shield tunnel compaction grouting structure of technical solutions of the utility model, it can be achieved to monitor the variation of stress increment of shield tunnel and the sedimentation in tunnel during slip casting, regulation and control slip casting is carried out thus according to monitoring situation, ensures the structural stability in tunnel and the planarization of underground railway track.
Description
Technical field
The utility model is related to shield tunnel field of reinforcement, and in particular to a kind of shield tunnel compaction grouting structure.
Background technology
Guangzhou Underground No.1 line yellow sand~longevity road section is shield tunnel section, and the foundation pit and pile foundation of project construction are tight
Adjacent station and running tunnel.Since in January, 2011, find downlink in 10 points~12 points of K5+400~K5+483 tunnel tops
Section of jurisdiction longitudinal crack is more at position (towards yellow sand station), and crackle is up to 4 on indivedual sections of jurisdiction, most of penetration of cracks monoblock sections of jurisdiction,
Maximum crack width is about close to 0.58mm；At 12 points~3 point positions (facing yellow sand station) section of jurisdiction at K5+411~K5+480 for uplink
Most of to have longitudinal crack, crack site is substantially distributed with downlink in mirror image.12 points~1 point position section of jurisdiction is opened at wherein K5+440
What is split is more serious, maximum crack width about 0.5mm.Totally 72, uplink crack, 53, downlink crack, 125 altogether.Due to Huang
Long section has been in major injury state, in order to ensure the operation of Subway Line 1 and passenger survival property safety, is badly in need of looking for
To a kind of reinforcement means, so as to carry out consolidation process to tunnel side stratum.
Compaction grouting is that thick slurries are injected the soil body, and hole is formed in the soil body, and with pressure rise, grouting amount increases
Greatly, cavity expansion, and pore pressure in surrounding soil is forced to rise, in a period of time after slip casting, pore pressure will gradually disappear
It dissipates, surrounding soil intensity raising by densification, so as to achieve the purpose that consolidated subsoil.
Slip casting operation is carried out just with slip casting machine in existing compaction grouting scheme, relies on team in operation process
Slip casting experience carries out slip casting, and stringenter project under construction is required for stratum, needs to carry out accurate prison during slip casting
Control prevents from occurring surface uplift after slip casting or tunnel vault declines, and surface uplift can cause underground railway track out-of-flatness to influence
Subway even running, and the structural stability that tunnel vault decline will excessively influence entire tunnel, and then subway circulation is caused
Harmful effect.
Invention content
The purpose of this utility model is that propose a kind of shield tunnel compaction grouting structure, the shield tunnel compaction grouting
Structure monitors the variation of stress increment of shield tunnel and the sedimentation in tunnel during can realizing slip casting, thus according to monitoring situation
Regulation and control slip casting is carried out, ensures the structural stability in tunnel and the planarization of underground railway track.
Based on this, the utility model proposes a kind of shield tunnel compaction grouting structure, including shield tunnel, grouting device
And monitoring device, the both sides of the shield tunnel are respectively equipped with injected hole, the grouting device includes Grouting Pipe and slip casting machine, institute
The both ends for stating Grouting Pipe are connected respectively with the injected hole and the slip casting machine, and the monitoring device is installed on the shield tunnel
Road, the monitoring device include stress monitor device and subsidence monitoring device, the stress monitor device and the subsidence monitoring
Device is electrically connected with the controller.
Further, the injected hole include be sequentially distributed from the bottom to top first group of injected hole, second group of injected hole and
Third group injected hole is the plane of reference to pass through face where the central axes of the shield tunnel and the center line of underground railway track, described the
One group of injected hole, second group of injected hole and the third group injected hole are symmetrical about the plane of reference including two
Injected hole.
Further, the Grouting Pipe is mini-valve tube.
Further, the injected hole and the gap that the mini-valve tube outer wall is formed are accelerated cement mortar sealing region.
Further, the sealing region for the gap by ground to below ground 1m-1.5m in the range of.
Further, check valve is further included, the check valve is installed on the upper end of the mini-valve tube.
Further, the stress monitor device is uniformly arranged on the inner wall of the shield tunnel.
Further, the subsidence monitoring device includes the first subsidence monitoring device and the second subsidence monitoring device, described
First subsidence monitoring device is installed on the vault of the shield tunnel, and the second subsidence monitoring device is installed on underground railway track
On center line.
Further, the second subsidence monitoring device sets one per 40m-50m along the underground railway track length direction
It is a.
Implement the utility model embodiment, have the advantages that：
1st, it during slip casting, realizes and the sedimentation of the stress increment and tunnel in tunnel is monitored, so as in slip casting process
In pinpoint the problems in time, and grouting parameter and grouting program are adjusted, avoid damage to shield tunnel structural integrity and
The planarization of underground railway track ensures the even running of subway.
2nd, symmetrical injected hole so that the structure on two sides of shield tunnel after slip casting is consistent, with ensureing entire tunnel side
Uniform force after layer is reinforced, will not lead to underground railway track because of side stress run-off the straight, and then can guarantee that underground railway track road surface is put down
Structural stability that is whole and then improving shield tunnel.
3rd, the gap that injected hole and mini-valve tube outer wall are formed is accelerated cement mortar sealing region, is thus prevented in slip casting
Occur grout in journey, and sealing region for gap by ground to below ground 1m-1.5m in the range of, meet block after tie
Under the premise of structure intensity, construction cost is effectively reduced.
4th, the upper end of mini-valve tube is equipped with check valve so that slurries will not be flow backwards during slip casting so that slurries are suitable
Profit enters in the soil body.
5th, subsidence monitoring device includes the first subsidence monitoring device and the second subsidence monitoring device, the first subsidence monitoring device
The vault of shield tunnel is installed on, thus can monitor the settling amount of the vault of shield tunnel, the second subsidence monitoring device is installed on
On the center line of underground railway track, so as to monitor the protuberance of underground railway track and decline, and the adjustment of slip casting is carried out, and then ensure subway rail
The planarization in road.
6th, the second subsidence monitoring device sets one per 40m-50m along underground railway track length direction, thus can monitor whole
The settling amount of underground railway track, and whole underground railway track need to ensure that bulk settling is uniform, thus do not have and jolt during subway circulation, into
And ensure subway even running.
Description of the drawings
Fig. 1 is the structure diagram of the shield tunnel compaction grouting structure of the utility model embodiment.
Fig. 2 is the utility model embodiment mini-valve tube and the matched structure diagram of injected hole.
In figure：1- injected holes, 2- shield tunnels, 3- mini-valve tubes, 4- stress monitor devices, 5- subsidence monitoring devices, 6- envelopes
Stifled region, 7- check valves, 8- underground railway tracks；First group of injected hole of 1a-, second group of injected hole of 1b-, 1c- third group injected holes,
5a- the first subsidence monitoring devices, 5b- the second subsidence monitoring devices.
Specific embodiment
Technical solutions of the utility model are further illustrated with reference to the accompanying drawings and examples：
As shown in Figure 1 to Figure 2：The present embodiment provides a kind of shield tunnel compaction grouting structure, including shield tunnel 2, note
Sizing device and monitoring device, the both sides of shield tunnel 2 are respectively equipped with injected hole 1, and grouting device includes Grouting Pipe and slip casting machine, note
The both ends of slurry pipe are connected respectively with the injected hole 1 and slip casting machine, it should be pointed out that the bottom of Grouting Pipe is down toward injected hole
1 bottom, and the upper end of Grouting Pipe is basseted and a distance and is connect with slip casting machine, thereby guarantees that being smoothed out for slip casting, monitors
Device is installed on shield tunnel 2, and monitoring device includes stress monitor device 4 and subsidence monitoring device 5,4 He of stress monitor device
Subsidence monitoring device 5 is electrically connected with the controller, and thus during slip casting, is realized to the stress increment in tunnel and sinking for tunnel
Drop is monitored, and so as to pinpoint the problems in time during slip casting, and grouting parameter is adjusted, avoids damage to shield tunnel
2 structural integrity and the planarization of underground railway track 8, ensure the even running of subway.
Based on above technical scheme, during slip casting, realize and the sedimentation of the stress increment and tunnel in tunnel is supervised
Control so as to pinpoint the problems in time during slip casting, and grouting parameter and grouting program are adjusted, avoids damage to shield tunnel
The structural integrity in road 2 and the planarization of underground railway track 8, ensure the even running of subway.
Further, injected hole 1 include first group of injected hole, 1, second group of injected hole 1b for being sequentially distributed from the bottom to top and
Third group injected hole 1c, to pass through shield tunnel 2 central axes and underground railway track 8 center line where face be the plane of reference, first group
Injected hole 1a, second group of injected hole 1b and third group injected hole 1c include two injected holes 1 symmetrical about the plane of reference,
Symmetrical injected hole 1 is so that the structure on two sides of shield tunnel 2 is consistent after slip casting, and then the structure for improving shield tunnel 2 is steady
It is qualitative.It should be pointed out that slip casting process choosing is from the bottom to top successively in first group of injected hole 1a, second group of note in the present embodiment
It starches hole 1b and third group injected hole 1c and carries out symmetrical slip casting, it is possible thereby to improve slip casting efficiency, and symmetrical slip casting may be such that slurries
The soil body with tunnel side stratum ensures uniform force after the stratum consolidation of entire tunnel side, will not lead to ground simultaneously by densification
Rail road 8 can guarantee 8 evenness of road surface of underground railway track because of side stress run-off the straight, and grouting sequence from the bottom to top makes
So that the structure positioned at bottom is first reinforced, and reinforces upwards successively after obtaining slip casting, construct more reasonable and structure is more stablized.
The Grouting Pipe of the present embodiment is mini-valve tube 3, and 3 slip casting of mini-valve tube being capable of timing, positioning, quantitative, easy to operate and energy
Ensure that slip casting effect is good.Further, injected hole 1 blocks area with the gap that 3 outer wall of mini-valve tube is formed for accelerated cement mortar
Thus domain 6 prevents that grout occurs during slip casting.In addition, sealing region 6 for gap by ground to below ground 1m-1.5m
In the range of, after closure is met under the premise of structural strength, effectively reduce construction cost.Further, check valve is further included
7, check valve 7 is installed on the upper end of mini-valve tube 3 so that slurries will not be flow backwards during slip casting so that slurries smoothly enter
In the soil body, it is pointed out that check valve 7 is connect with mini-valve tube 3 by flange in the present embodiment, the structure of flange it is simple and
It is compact to may be such that check valve 7 is connect with mini-valve tube 3.
Further, stress monitor device 4 is uniformly arranged on the inner wall of shield tunnel 2, thus can be comprehensive to shield tunnel
The stress increment in road 2 is monitored, and slip casting effect assessment is carried out by the stress increment variation in each orientation.
Subsidence monitoring device 5 in the present embodiment includes the first subsidence monitoring device 5a and the second subsidence monitoring device 5b,
First subsidence monitoring device 5a is installed on the vault of shield tunnel 2, thus can monitor the settling amount of the vault of shield tunnel 2, the
Two subsidence monitoring device 5b are installed on the center line of underground railway track 8, so as to monitor the protuberance of underground railway track 8 and decline, and are carried out
The adjustment of slip casting, and then ensure the planarization of underground railway track 8.Further, the second subsidence monitoring device 5b is grown along underground railway track 8
It spends direction and one is set per 40m-50m, thus can monitor the settling amount of whole underground railway track 8, and whole underground railway track 8 needs to protect
It is uniform to demonstrate,prove bulk settling, does not thus have and jolts during subway circulation, and then ensures subway even running.
Using the shield tunnel compaction grouting structure of the utility model embodiment, during slip casting, realize and tunnel is answered
The sedimentation of power increment and tunnel is monitored, so as to pinpoint the problems in time during slip casting, and to grouting parameter and slip casting side
Case is adjusted, and avoids damage to the structural integrity of shield tunnel 2 and the planarization of underground railway track 8, ensures the steady fortune of subway
Row.Symmetrical injected hole 1 ensures that entire tunnel side stratum adds so that the structure on two sides of shield tunnel 2 is consistent after slip casting
Gu uniform force after, will not lead to underground railway track 8 because of side stress run-off the straight, and then can guarantee 8 evenness of road surface of underground railway track
And then improve the structural stability of shield tunnel 2.Injected hole 1 is accelerated cement mortar with the gap that 3 outer wall of mini-valve tube is formed
Thus sealing region 6 prevents that grout occurs during slip casting, and sealing region 6 for gap by ground to below ground 1m-
In the range of 1.5m, after closure is met under the premise of structural strength, construction cost is effectively reduced.The upper end installation of mini-valve tube 3
There is check valve 7 so that slurries will not be flow backwards during slip casting so that slurries smoothly enter in the soil body.Subsidence monitoring device 5
Shield tunnel 2 is installed on including the first subsidence monitoring device 5a and the second subsidence monitoring device 5b, the first subsidence monitoring device 5a
Vault, thus can monitor the settling amount of the vault of shield tunnel 2, the second subsidence monitoring device 5b is installed on two underground railway tracks
Between 8, so as to monitor the protuberance of underground railway track 8 and decline, and the adjustment of slip casting is carried out, and then ensure the smooth of underground railway track 8
Property.Second subsidence monitoring device 5b sets one per 40m-50m along 8 length direction of underground railway track, thus can monitor whole subway
The settling amount of track 8, and whole underground railway track 8 need to ensure that bulk settling is uniform, thus do not have and jolt during subway circulation, and then
Ensure subway even running.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, under the premise of the utility model technical principle is not departed from, several improvement and replacement can also be made, these change
The scope of protection of the utility model is also should be regarded as into replacement.
Claims (9)
1. a kind of shield tunnel compaction grouting structure, it is characterised in that：Including shield tunnel, grouting device and monitoring device, institute
The both sides for stating shield tunnel are respectively equipped with injected hole, and the grouting device includes Grouting Pipe and slip casting machine, and the two of the Grouting Pipe
End is connected respectively with the injected hole and the slip casting machine, and the monitoring device is installed on the shield tunnel, the monitoring
Device includes stress monitor device and subsidence monitoring device, the stress monitor device and the subsidence monitoring device with control
Device is electrically connected.
2. shield tunnel compaction grouting structure according to claim 1, it is characterised in that：The injected hole include by down toward
On the first group of injected hole, second group of injected hole and the third group injected hole that are sequentially distributed, to pass through the axis of the shield tunnel
Face where the center line of line and underground railway track is the plane of reference, first group of injected hole, second group of injected hole and the third
Group injected hole includes two injected holes symmetrical about the plane of reference.
3. shield tunnel compaction grouting structure according to claim 1, it is characterised in that：The Grouting Pipe is mini-valve tube.
4. shield tunnel compaction grouting structure according to claim 3, it is characterised in that：The injected hole and the sleeve valve
The gap that pipe outer wall is formed is accelerated cement mortar sealing region.
5. shield tunnel compaction grouting structure according to claim 4, it is characterised in that：Between the sealing region is described
In the range of gap is by ground to below ground 1m-1.5m.
6. shield tunnel compaction grouting structure according to claim 5, it is characterised in that：Further include check valve, the list
The upper end of the mini-valve tube is installed on to valve.
7. shield tunnel compaction grouting structure according to any one of claims 1 to 6, it is characterised in that：The stress prison
Control device is uniformly arranged on the inner wall of the shield tunnel.
8. shield tunnel compaction grouting structure according to any one of claims 1 to 6, it is characterised in that：The sedimentation prison
It controls device and includes the first subsidence monitoring device and the second subsidence monitoring device, the first subsidence monitoring device is installed on the shield
The vault in structure tunnel, the second subsidence monitoring device are installed on the center line of underground railway track.
9. shield tunnel compaction grouting structure according to claim 8, it is characterised in that：The second subsidence monitoring device
One is set per 40m-50m along the underground railway track length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721338303.XU CN207568622U (en) | 2017-10-16 | 2017-10-16 | A kind of shield tunnel compaction grouting structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721338303.XU CN207568622U (en) | 2017-10-16 | 2017-10-16 | A kind of shield tunnel compaction grouting structure |
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| Publication Number | Publication Date |
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| CN207568622U true CN207568622U (en) | 2018-07-03 |
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| CN201721338303.XU Active CN207568622U (en) | 2017-10-16 | 2017-10-16 | A kind of shield tunnel compaction grouting structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577333A (en) * | 2020-05-18 | 2020-08-25 | 北京市政建设集团有限责任公司 | Shield tunnel compaction grouting structure |
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2017
- 2017-10-16 CN CN201721338303.XU patent/CN207568622U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111577333A (en) * | 2020-05-18 | 2020-08-25 | 北京市政建设集团有限责任公司 | Shield tunnel compaction grouting structure |
| CN111577333B (en) * | 2020-05-18 | 2022-01-18 | 北京市政建设集团有限责任公司 | Shield tunnel compaction grouting structure |
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Address after: 510000 No. 204 Huanshi West Road, Yuexiu District, Guangzhou City, Guangdong Province Patentee after: Guangzhou Metro Design and Research Institute Co., Ltd. Address before: 510000 No. 204 Huanshi West Road, Yuexiu District, Guangzhou City, Guangdong Province Patentee before: Guangzhou Metro Design & Research Institute Co., Ltd. |