CN107387102B - Reconstruction shield machine for shield tunnel - Google Patents
Reconstruction shield machine for shield tunnel Download PDFInfo
- Publication number
- CN107387102B CN107387102B CN201710721401.XA CN201710721401A CN107387102B CN 107387102 B CN107387102 B CN 107387102B CN 201710721401 A CN201710721401 A CN 201710721401A CN 107387102 B CN107387102 B CN 107387102B
- Authority
- CN
- China
- Prior art keywords
- shield
- tunnel
- shield tunnel
- shield shell
- shell
- 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.)
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Links
- 239000002689 soil Substances 0.000 claims abstract description 28
- 210000000038 chest Anatomy 0.000 claims description 8
- 210000000481 breast Anatomy 0.000 claims description 7
- 239000002893 slag Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 description 13
- 239000002002 slurry Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a reconstruction shield machine of a shield tunnel, which comprises an outer shield shell and an inner shield shell which are coaxially arranged; an annular soil cabin chest plate is connected between the front end of the outer shield shell and the inner shield shell; the front surface of the annular soil cabin chest plate is provided with an annular cutter disc; the existing shield tunnel roundness correction system and the existing shield tunnel dismantling system are arranged in the outer shield shell. The invention has the advantages that the reconstruction shield machine can smoothly dismantle the shield tunnel to be scrapped, and simultaneously assemble a new shield tunnel, thereby solving the problems that the scrapping treatment of the existing shield tunnel is difficult and the space position of the newly-built shield tunnel is difficult, reducing the disturbance to stratum to the maximum extent, and protecting the surrounding environment and structures of the tunnel to the maximum extent.
Description
Technical Field
The invention belongs to the field of tunnel engineering, and particularly relates to a reconstruction shield machine of a shield tunnel.
Background
The shield tunnel has a certain design service life, and the damage of the shield tunnel is serious from the operated shield tunnel, such as overlarge structural deformation, structural cracking, edge angle damage, structural water leakage and the like, so that the service life of the shield tunnel is seriously threatened. Therefore, it is an unavoidable fact that the reconstruction of the now operated shield tunnel will be performed in the near future. However, if the existing shield tunnel is directly molded with lining, the requirement of subway train limitation cannot be met at all from the design point of view. If the existing shield tunnel is directly abandoned and a new path is created for the newly built shield tunnel, the existing shield tunnel will directly influence the ground surface, surrounding structures and the like after the instability occurs in the future, and the underground space resources are not allowed. Therefore, how to dismantle the existing shield tunnel close to scrapping, how to select the space position of the newly-built shield tunnel and how to newly-build the shield tunnel are unavoidable problems in the field of subway shield tunnels. The space resource of the existing shield tunnel is utilized, and the existing shield tunnel is disassembled and a new shield tunnel is assembled again, so that the problem is effectively solved. However, the conventional shield machine cannot satisfy the above functions.
Disclosure of Invention
The invention aims to provide a reconstruction shield machine of a shield tunnel according to the defects of the prior art, and the reconstruction shield machine synchronously constructs a new shield tunnel while dismantling the existing tunnel, so that the problem that the existing tunnel is difficult to discard and the problem of space of the new shield tunnel are effectively solved.
The invention is realized by the following technical scheme:
the reconstruction shield machine of the shield tunnel comprises an outer shield shell and an inner shield shell which are coaxially arranged; an annular soil cabin chest plate is connected between the front end of the outer shield shell and the inner shield shell; the front surface of the annular soil cabin chest plate is provided with an annular cutter disc; the existing shield tunnel roundness correction system and the existing shield tunnel dismantling system are arranged in the outer shield shell.
The annular soil bin breast board and the annular cutter disc are arranged between the annular soil bin breast board and the cutter disc, and the back of the annular soil bin breast board is provided with a soil bin slag discharging device and an annular cutter disc driving device for driving the annular cutter disc to rotate.
The inner surface of the inner shield shell is provided with a front shield shell waterproof structure.
The front edge of the inner shield shell is provided with a plurality of guide wheels.
The existing shield tunnel roundness correction system comprises a horizontal stay bar and a correction disc consisting of a plurality of correction bars; the center of the correcting disc is vertically arranged at the front end part of the horizontal stay bar; each correction rod is arranged radially to form the correction disc; the first end of the correcting rod is connected with the horizontal stay rod.
The correcting rod is a hydraulically driven telescopic rod, and the second end of the correcting rod is connected with a guide wheel.
One end of the horizontal stay bar is fixedly connected to a correction system support inside the outer shield shell.
The horizontal stay bars and the inner shield shell are coaxially arranged.
The inside of outer shield shell is provided with a plurality of hydraulic jack-in cylinders towards outer shield shell rear end.
The inner diameter of the outer shield shell is 15-30cm larger than the outer diameter of the newly-built shield tunnel.
The invention has the advantages that the reconstruction shield machine can smoothly dismantle the shield tunnel to be scrapped, and simultaneously assemble a new shield tunnel, thereby solving the problems that the scrapping treatment of the existing shield tunnel is difficult and the space position of the newly-built shield tunnel is difficult, reducing the disturbance to stratum to the maximum extent, and protecting the surrounding environment and structures of the tunnel to the maximum extent.
Drawings
FIG. 1 is a cross-sectional view of a reconstruction shield machine of the present invention;
FIG. 2 is an enlarged view of a portion of the invention at A in FIG. 1;
FIG. 3 is a schematic illustration of the invention during operation of the corrector disc.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings, to facilitate understanding by those skilled in the art:
as shown in fig. 1-3, reference numerals 1-19 are respectively: the method comprises the steps of reconstructing a shield machine 1, an existing shield tunnel 2, an outer shield shell 3, an inner shield shell 4, an annular soil cabin chest plate 5, an annular cutter disc 6, an existing shield tunnel dismantling system 7, an existing shield tunnel roundness correcting system 8, a newly-built shield tunnel 9, a horizontal stay bar 10, a correcting rod 11, a correcting disc 12, a correcting system bracket 13, a guide wheel 14, an annular cutter disc driving device 15, a soil cabin slag discharging device 16, a front shield shell waterproof structure 17, a guide wheel 18, a hydraulic jacking oil cylinder 19 and an annular soil cabin 20.
Examples: as shown in fig. 1, the present embodiment specifically relates to a reconstruction shield machine of a shield tunnel, and the reconstruction shield machine 1 includes a cylindrical outer shield shell 3 and an inner shield shell 4; the inner shield shell 4 is arranged in the outer shield shell 3, and the inner shield shell and the outer shield shell are coaxially arranged; an annular soil cabin chest plate 5 is connected between the front end of the outer shield shell 3 and the inner shield shell 4; an annular cutter disc 6 is arranged at the front opening of the annular soil bin breast plate 5, and an annular soil bin 20 is arranged between the annular soil bin breast plate 5 and the annular cutter disc 6; the existing shield tunnel roundness correction system 8 is arranged in the outer shield shell 3; the inner shield shell 4 is used for being sleeved on the outer surface of the existing shield tunnel 2, and the existing shield tunnel dismantling system 7 is used for dismantling the segments of the existing shield tunnel 2 in the jacking process of the reconstructed shield machine 1.
As shown in fig. 1 and 2, the ring cutter 6 surrounds the outer surface of the inner shield shell 4; the outer diameter of the annular cutterhead 6 is the same as the diameter of the outer shield shell 3, and an annular cutterhead driving device 15 is arranged on the back surface of the annular soil cabin chest plate 5; the annular cutterhead driving device 15 is used for driving the annular cutterhead 6 to rotate along the axis of the outer shield shell 3; soil in front of the shield machine 1 can be cut and reconstructed in the rotating process of the annular cutter head 6; a soil cabin slag discharging device 16 is arranged on the back surface of the annular soil cabin chest plate 5, and slag in the annular soil cabin 20 can be discharged through the soil cabin slag discharging device 16; the rebuilding shield machine 1 of the embodiment may be a soil pressure balance shield machine or a slurry balance shield machine.
As shown in fig. 1 and 2, in order to ensure tightness between the inner surface of the inner shield shell 4 and the outer surface of the existing shield tunnel 2; a front shield shell waterproof structure 17 is arranged on the inner surface of the inner shield shell 4; the front shield shell waterproof structure 17 is tightly attached to the outer surface of the existing shield tunnel 2, so that groundwater and slurry in front of the reconstruction shield machine 1 can be prevented from entering the interior of the reconstruction shield machine 1; in order to ensure that the inner shield shell 4 can smoothly slide along the outer surface of the existing shield tunnel 2 in the jacking process of the reconstruction shield machine 1, a plurality of guide wheels 18 are arranged at the front end edge of the inner shield shell 4.
As shown in fig. 1 and 3, the existing shield tunnel 2 undergoes a long use process after being built, deformation can be generated under the action of external forces such as uneven settlement of the stratum of the existing shield tunnel 2 in the process, and the section shape of the deformed existing shield tunnel 2 is inconsistent with the section shape of the inner shield shell 4, so that the inner shield shell 4 cannot smoothly slide along the outer surface of the existing shield tunnel 2; to solve this problem, the existing shield tunnel roundness correction system 8 is installed inside the reconstruction shield machine 1 of the present embodiment; the existing shield tunnel roundness correction system 8 comprises a horizontal stay bar 10 and a correction disc 12 consisting of a plurality of correction bars 11; one end of the horizontal stay bar 10 is fixedly connected to the internal correction system bracket 13; the horizontal stay bar 10 is arranged coaxially with the inner shield shell 4.
As shown in fig. 1 and 3, the horizontal stay 10 is vertically connected to the center of the correction plate 12; the correction rods 11 are arranged radially to form a correction disc; the first end of the correcting rod 11 is connected with the end part of the horizontal supporting rod 10; a second end of the correcting rod 11 is provided with a guide wheel 14; the correcting rods 11 are hydraulically driven telescopic rods, and the telescopic lengths of the telescopic rods are the same, so that a circular correcting disc is formed; the guide wheel 14 can enable the second end of the correcting rod 11 to slide along the inner surface of the existing shield tunnel 2 in the jacking process of the reconstructed shield machine 1, so that the outer shield shell 3 is guided.
As shown in fig. 1 and 3, in the process of correcting the cross-sectional shape of the existing shield tunnel 2 by using the existing shield tunnel roundness correction system 8, a correction disc 12 is arranged at the tail end of the existing shield tunnel 2, the correction disc 12 is perpendicular to the axis of the existing shield tunnel 2, and the second end of a correction rod 11 of the correction disc 12 is propped against the inner surface of the existing shield tunnel 2; by adjusting the expansion and contraction of each correction rod 11, the cross-sectional shape of the existing shield tunnel 2 where the correction disc 12 is located can be adjusted, and the corrected acting force can be transmitted to the front side and the rear side where the correction disc 12 is located through the connecting structure among tunnel segments, so that the existing shield tunnel 2 in a certain range in front of the correction disc 12 is subjected to regional correction, and the inner shield shell 4 can smoothly slide along the outer surface of the existing shield tunnel 2; in addition, the correction disc 12 can also play a supporting role to prevent the tail end of the existing shield tunnel 2 from collapsing in the disassembling process.
As shown in fig. 1, a plurality of hydraulic jacking cylinders 19 facing the rear end are arranged inside the outer shield shell 3; in the jacking process of the reconstruction shield machine 1, continuously splicing segments of a newly built shield tunnel 9 at the rear end, wherein the outer diameter of the newly built shield tunnel 9 is slightly smaller than the inner diameter of the outer shield shell 3; the inner diameter of the outer shield shell 3 is 15-30cm larger than the outer diameter of the newly built shield tunnel 9. The outer diameter of the newly built shield tunnel 9 is 1-2m larger than that of the existing shield tunnel 2, and the thickness of the segment is 0.1-0.25m larger than that of the existing shield tunnel 2; in the jacking process of the reconstruction shield machine 1, a hydraulic jacking cylinder 19 is jacked on the front edge of the segment of the newly-built shield tunnel 9.
As shown in fig. 1, the method for reconstructing a tunnel by using the reconstruction shield machine 1 of the present embodiment includes the following steps:
1) As shown in fig. 1, a reconstruction shield machine 1 is installed at the end of an existing shield tunnel 2; sleeving an inner shield shell 4 of the reconstruction shield machine on the outer surface of the existing shield tunnel 2;
2) As shown in fig. 1, the reconstruction shield machine 1 is pushed forward, and before the pushing, an internal existing shield tunnel roundness correction system 8 is used for correcting the tail end of an existing shield tunnel 2, and as the existing shield tunnel 2 is corrected by the existing shield tunnel roundness correction system 8, a guide wheel 18 on the reconstruction shield machine 1 can conduct guide sliding along the outer surface of the corrected existing shield tunnel 2; after jacking is completed, the tail end of the existing shield tunnel 2 is dismantled by using an internal existing shield tunnel dismantling system 7, and the segments of a newly built shield tunnel 9 are spliced at the tail part of the outer shield shell 3; repeating the jacking process of the reconstruction shield machine 1 until the reconstruction of the existing shield tunnel is completed.
The beneficial technical effects of this embodiment are: the reconstruction shield machine can smoothly dismantle the shield tunnel to be scrapped, and simultaneously assemble a new shield tunnel, so that the problems that the scrapping treatment of the existing shield tunnel is difficult and the space position of the new shield tunnel is difficult are solved, the disturbance to stratum is reduced to the greatest extent, and the surrounding environment and structures of the tunnel are protected to the greatest extent.
Claims (6)
1. The reconstruction shield machine of the shield tunnel is characterized by comprising an outer shield shell and an inner shield shell which are coaxially arranged; an annular soil cabin chest plate is connected between the front end of the outer shield shell and the inner shield shell; the front surface of the annular soil cabin chest plate is provided with an annular cutter disc; an existing shield tunnel roundness correction system and an existing shield tunnel dismantling system are arranged in the outer shield shell;
the existing shield tunnel roundness correction system comprises a horizontal stay bar and a correction disc consisting of a plurality of correction bars; the center of the correcting disc is vertically arranged at the front end part of the horizontal stay bar; each correction rod is arranged radially to form the correction disc; the first end of the correcting rod is connected with the horizontal stay rod;
the correcting rod is a hydraulically driven telescopic rod, and the second end of the correcting rod is connected with a guide wheel;
one end of the horizontal stay bar is fixedly connected to a correction system bracket in the outer shield shell;
the horizontal stay bars and the inner shield shell are coaxially arranged.
2. The reconstruction shield machine for the shield tunnel according to claim 1, wherein an annular soil bin is arranged between the annular soil bin breast plate and the cutterhead, and a soil bin slag discharging device and an annular cutterhead driving device for driving the annular cutterhead to rotate are arranged on the back surface of the annular soil bin breast plate.
3. The reconstruction shield machine for a shield tunnel according to claim 1, wherein the inner surface of the inner shield shell is provided with a front shield shell waterproof structure.
4. The machine according to claim 1, wherein the front edge of the inner shield shell is provided with a plurality of guide wheels.
5. The reconstruction shield machine for the shield tunnel according to claim 1, wherein a plurality of hydraulic jacking cylinders facing the rear end of the outer shield shell are arranged in the outer shield shell.
6. The reconstruction shield machine of a shield tunnel according to claim 1, wherein the inner diameter of the outer shield shell is 15-30cm larger than the outer diameter of the newly built shield tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710721401.XA CN107387102B (en) | 2017-08-22 | 2017-08-22 | Reconstruction shield machine for shield tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710721401.XA CN107387102B (en) | 2017-08-22 | 2017-08-22 | Reconstruction shield machine for shield tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107387102A CN107387102A (en) | 2017-11-24 |
| CN107387102B true CN107387102B (en) | 2023-11-14 |
Family
ID=60352714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710721401.XA Active CN107387102B (en) | 2017-08-22 | 2017-08-22 | Reconstruction shield machine for shield tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107387102B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108571322B (en) * | 2018-05-16 | 2023-08-15 | 华东交通大学 | Shield tunneling machine tail brush device and replacement method thereof |
Citations (17)
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|---|---|---|---|---|
| JPH07173989A (en) * | 1993-12-17 | 1995-07-11 | Kawasaki Heavy Ind Ltd | Shield machine |
| JPH07269272A (en) * | 1994-03-30 | 1995-10-17 | Daiho Constr Co Ltd | Shield driving method for existing pipe removal and new piping construction |
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| JPH0988474A (en) * | 1995-09-27 | 1997-03-31 | Tokyo Met Gov Gesuido Service Kk | Joint method of tunnel and shield excavator used therefor |
| JPH09132999A (en) * | 1995-11-08 | 1997-05-20 | Shiraishi:Kk | Assembling construction method for segment covering and shield machine |
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| JP2004003378A (en) * | 2003-09-05 | 2004-01-08 | Okumura Corp | The propulsion method for shield machine |
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2017
- 2017-08-22 CN CN201710721401.XA patent/CN107387102B/en active Active
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| JPH07269272A (en) * | 1994-03-30 | 1995-10-17 | Daiho Constr Co Ltd | Shield driving method for existing pipe removal and new piping construction |
| JPH08291691A (en) * | 1995-04-20 | 1996-11-05 | Tokyu Constr Co Ltd | Shielding machine and method for reconstructing tunnel |
| JPH0988474A (en) * | 1995-09-27 | 1997-03-31 | Tokyo Met Gov Gesuido Service Kk | Joint method of tunnel and shield excavator used therefor |
| JPH09132999A (en) * | 1995-11-08 | 1997-05-20 | Shiraishi:Kk | Assembling construction method for segment covering and shield machine |
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| JP2004003378A (en) * | 2003-09-05 | 2004-01-08 | Okumura Corp | The propulsion method for shield machine |
| CN201300156Y (en) * | 2008-11-25 | 2009-09-02 | 浙江省交通工程建设集团有限公司 | Roundness corrector for steel casing |
| CN102200014A (en) * | 2010-03-23 | 2011-09-28 | 同济大学 | Earth pressure balance type annular shield machine |
| CN102305083A (en) * | 2011-08-01 | 2012-01-04 | 北京市三一重机有限公司 | Shield machine and anterior shield system thereof |
| CN102430657A (en) * | 2012-01-12 | 2012-05-02 | 信阳市四通机械制造有限公司 | Tube expander |
| CN103706670A (en) * | 2013-12-12 | 2014-04-09 | 中铁十四局集团有限公司 | Shield tail arc degree on-site correcting device of extra-large-diameter shield tunneling machine |
| CN105257310A (en) * | 2015-11-04 | 2016-01-20 | 上海大学 | Heading face advance protective type shield |
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| Publication number | Publication date |
|---|---|
| CN107387102A (en) | 2017-11-24 |
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