CN113266391A - Wall rear buffer air bag device for preventing duct piece from floating upwards and construction method thereof - Google Patents
Wall rear buffer air bag device for preventing duct piece from floating upwards and construction method thereof Download PDFInfo
- Publication number
- CN113266391A CN113266391A CN202110755608.5A CN202110755608A CN113266391A CN 113266391 A CN113266391 A CN 113266391A CN 202110755608 A CN202110755608 A CN 202110755608A CN 113266391 A CN113266391 A CN 113266391A
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- air bag
- floating
- duct piece
- preventing
- wall
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- 238000010276 construction Methods 0.000 title claims abstract description 21
- 239000002002 slurry Substances 0.000 claims abstract description 27
- 238000007789 sealing Methods 0.000 claims description 18
- 238000007599 discharging Methods 0.000 claims description 17
- 230000000903 blocking effect Effects 0.000 claims description 4
- 230000003139 buffering effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 17
- 239000007788 liquid Substances 0.000 abstract description 15
- 230000008569 process Effects 0.000 abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 239000011435 rock Substances 0.000 abstract description 5
- 230000009471 action Effects 0.000 abstract description 3
- 239000011440 grout Substances 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a wall rear buffer air bag device for preventing a duct piece from floating upwards and a construction method thereof, and belongs to the technical field of tunnel construction. A behind-wall cushion airbag device for preventing floating of a segment, comprising: a duct piece and an air bag assembly; the hole has been seted up on the section of jurisdiction, and the gasbag subassembly includes gasbag body, feed line and discharge pipeline, and feed line and discharge pipeline are respectively run through the hole. According to the invention, high-pressure gas is input into the air bag body on the outer side of the duct piece through the feeding pipe, so that the air bag body expands under the action of air pressure, corresponding counter force is given to the duct piece after the air bag body contacts surrounding rocks on the outer side, floating force generated by underground water and slurry is counteracted, and the duct piece is prevented from floating upwards in the process that the slurry is not solidified; treat that the section of jurisdiction come-up obtains effective control after, pour into high-pressure thick liquid into the gasbag body again, fill gasbag inside, treat that the thick liquid solidifies the back finally to realize the effective control to the section of jurisdiction come-up, guarantee tunnel construction quality and later stage safety.
Description
Technical Field
The invention relates to the technical field of tunnel construction, in particular to a behind-wall buffer air bag device for preventing a duct piece from floating upwards and a construction method thereof.
Background
At present, the shield method is widely applied to the construction of urban subway tunnel engineering in China. In the shield method construction process, one of the key points concerned by a construction party and a supervision party is the quality of a formed tunnel, which is directly related to the subsequent use and personnel safety of a tunnel structure, but because the shield tunnel has a partial over-excavation phenomenon during excavation, surrounding strata cannot be immediately restricted, and a floating space is provided for the structure. Because the thick liquid initial set required time that fills behind the section of jurisdiction wall is longer, and the section of jurisdiction is assembled and is advanced the speed than the piece forward, can lead to one section of jurisdiction to be in all the time not congealing the thick liquid, and not congealing the thick liquid and combine the original hydrostatic pressure in stratum to exert ascending buoyancy to the section of jurisdiction, the section of jurisdiction trend of will appearing the come-up when buoyancy is greater than section of jurisdiction ring gravity, and in the shield structure work progress, the come-up phenomenon of section of jurisdiction is very common.
In shield construction of strong weathering, medium weathering rock stratum and soft soil stratum, the floating phenomenon of the duct piece can often lead to very serious potential safety hazard. Firstly, shearing force can be directly applied to longitudinal bolts due to the dislocation of the floating duct pieces, so that duct piece cracks or the result of cutting between the bolts can easily occur, and in addition, the waterproof layer can be broken, so that the problems of serious piping or sand surge and the like occur in a water-rich stratum, and the structure safety is influenced; secondly, in the synchronous grouting construction process, the pipe piece floats upwards to open a crack of the upper earthing part, so that grouting slurry flows outwards, the grouting amount is increased, water is supplemented into the crack to directly dilute the slurry, the solidification time of the slurry is prolonged, and the floating phenomenon is further increased; the last floating segment causes an axis deviation that exceeds the building limits of the tunnel.
At present, much attention is paid to the floating problem of the tunnel segments in cities in China, and basic reference measures aiming at segment floating control comprise improving the slurry mixing ratio to shorten the initial setting time and increase the consistency of slurry, or improving the grouting pressure or increasing the grouting amount during grouting and increasing the uniform grouting of the grouting, so that the speed of a grouting person is matched with the tunneling speed, and the time for filling the building gap with upper slurry is shortened; supplementary grouting is carried out after the wall of the duct piece is subjected to double-liquid grouting, so that the floating probability of the duct piece is reduced; other measures include adjusting shield working attitude, bolt tightening and other methods. However, in view of the fact that stratum is special and changeable when the pipe piece floats upwards, grouting proportion and mechanism adjustment cannot be completely adapted to temporary and changeable wall environments in advance, and a solution with strong adaptability to two pipe piece floating factors of resisting hydrostatic pressure and grouting pressure does not exist at present. Therefore, the prior art has the problem that the floating of the pipe sheet structure in the grouting process is difficult to prevent.
Disclosure of Invention
The invention aims to provide a behind-wall buffer air bag device for preventing a duct piece from floating upwards and a construction method thereof, and aims to solve the problem that the duct piece structure is difficult to float upwards in the grouting process.
The technical scheme for solving the technical problems is as follows:
a behind-wall cushion airbag device for preventing floating of a segment, comprising: an air bag assembly disposed on the segment;
the hole has been seted up on the section of jurisdiction, and the gasbag subassembly is including setting up the gasbag body in the section of jurisdiction outside and respectively with feed line and the discharge pipeline of gasbag body intercommunication, feed line and discharge pipeline are the through-penetration hole respectively.
According to the invention, high-pressure gas is input into the air bag body on the outer side of the duct piece through the feeding pipe, so that the air bag body expands under the action of air pressure, corresponding counter force is given to the duct piece after the air bag body contacts surrounding rocks on the outer side, floating force generated by underground water and slurry is counteracted, and the duct piece is prevented from floating upwards in the process that the slurry is not solidified; treat that the section of jurisdiction come-up obtains effective control after, pour into high-pressure thick liquid into the gasbag body again, fill gasbag inside, treat that the thick liquid solidifies the back finally to realize the effective control to the section of jurisdiction come-up, guarantee tunnel construction quality and later stage safety.
Furthermore, a diversion baffle is arranged in the air bag body, separates the feeding pipeline from the discharging pipeline and divides the air bag body into a feeding area, a flowing area and a discharging area.
The flow guide partition plate firstly isolates the feeding pipeline from the discharging pipeline and guides the air flow and the liquid flow in the air bag body, so that the air flow or the liquid flow is prevented from gathering at the end part of the feeding pipeline to influence the expansion speed of the air bag body.
Furthermore, the feeding pipeline is connected with a one-way valve.
The invention can ensure the constant air pressure in the air bag body through the one-way valve, thereby providing stable pressure for the duct piece.
Furthermore, the feeding pipeline and the discharging pipeline are respectively detachably connected with a sealing cover.
The sealing cover is used for sealing the feeding pipeline and the discharging pipeline.
Further, the duct piece includes: the standard block, the adjacent block and the top sealing block are respectively provided with a hole, and the standard block, the adjacent block and the top sealing block are detachably connected.
The duct piece is formed by splicing the standard block, the adjacent block and the capping block, so that the mounting is convenient.
Further, the one end that the gasbag body was kept away from to above-mentioned hole can be dismantled and is connected with the spiral cover, and the spiral cover includes the screw rod of being connected with the hole and sets up the blanking cover at the screw rod tip, and the blanking cover is sealed with the hole and is cooperated.
The screw cap is used for sealing the hole, and other impurities are prevented from being mixed into the hole to cause blockage.
Furthermore, a fork-shaped groove is formed in one surface, far away from the screw, of the blocking cover.
The invention facilitates the spiral taking out of the screw cap through the fork-shaped groove.
A construction method of a wall rear buffer air bag device for preventing a duct piece from floating upwards adopts the wall rear buffer air bag device for preventing the duct piece from floating upwards, and comprises the following steps:
s1: prefabricating holes in the pipe piece;
s2: mounting an air bag assembly on each segment;
s3: high-pressure gas is filled into the air bag body through a feeding pipeline;
s4: the air bag body expands to prevent the pipe piece from floating upwards;
s5: disassembling the one-way valve, filling slurry into the air bag body and extruding gas;
s6: stopping grouting when the discharging pipeline uniformly discharges the slurry;
s7: the feeding pipeline and the discharging pipeline are respectively sealed by a sealing cover, and the hole is sealed by a screw cap.
The invention has the following beneficial effects:
according to the invention, high-pressure gas is input into the air bag body on the outer side of the duct piece through the feeding pipe, so that the air bag body expands under the action of air pressure, corresponding counter force is given to the duct piece after the air bag body contacts surrounding rocks on the outer side, floating force generated by underground water and slurry is counteracted, and the duct piece is prevented from floating upwards in the process that the slurry is not solidified; treat that the section of jurisdiction come-up obtains effective control after, pour into high-pressure thick liquid into the gasbag body again, fill gasbag inside, treat that the thick liquid solidifies the back finally to realize the effective control to the section of jurisdiction come-up, guarantee tunnel construction quality and later stage safety.
Drawings
FIG. 1 is a schematic structural view of a rear wall buffer airbag device for preventing a duct piece from floating upward according to the present invention;
FIG. 2 is a schematic view of the position of the airbag module and the aperture of the present invention;
FIG. 3 is a schematic structural view of the screw cap of the present invention;
FIG. 4 is a schematic view of the operation of the air bag body of the present invention filled with high pressure gas;
FIG. 5 is a schematic view of the operation of the bladder body of the present invention injecting grout;
fig. 6 is a schematic view showing the operation of the present invention when the filling of the slurry into the air bag body is completed.
In the figure: 10-a duct piece; 11-holes; 12-standard block; 13-an abutment block; 14-a capping block; 15-screw cap; 16-forked grooves; 17-a screw; 18-a blanking cover; 20-an airbag module; 21-balloon body; 22-feed line; 23-a discharge line; 24-a flow guide clapboard; 25-a one-way valve; 26-sealing the cover; 27-a feeding zone; 28-a flow region; 29-discharge zone.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Examples
Referring to fig. 1, a behind-wall cushion airbag device for preventing a segment from floating up, includes: a tube sheet 10 and an airbag module 20.
Referring to fig. 1 and 3, the tube sheet 10 includes: the device comprises standard blocks 12, adjacent blocks 13 and capping blocks 14, wherein the number of the standard blocks 12 is three, the number of the adjacent blocks 13 is two, and the number of the capping blocks 14 is one. The standard block 12 and the abutting block 13 are respectively provided with a hole 11 on the top sealing block 14, and the medium can be filled into the air bag module 20 through the holes 11. The one end of hole 11 in the inboard of section of jurisdiction 10 can be dismantled and be connected with spiral cover 15, spiral cover 15 include with the screw rod 17 of 11 inner wall threaded connection of hole and set up the blanking cover 18 at the screw rod 17 tip, blanking cover 18 is used for sealing hole 11 to the head of blanking cover 18 has been seted up the fork shape groove 16 and has conveniently been got and has been unloaded, avoids other impurity to sneak into and causes the jam in the hole 11.
Referring to fig. 1 and 2, the airbag module 20 includes an airbag body 21 disposed outside the standard block 12, the abutting block 13, and the capping block 14, respectively, and a feeding pipe 22 and a discharging pipe 23 communicated with the airbag body 21, where the feeding pipe 22 and the discharging pipe 23 respectively penetrate through the holes 11 and can be connected to an external device to facilitate filling of high-pressure gas or slurry into the airbag body 21. The feed line 22 is also connected with a one-way valve 25, which can ensure constant air pressure in the air bag body 21, thereby providing stable pressure for the segment 10. The inside of the gasbag body 21 is equipped with flow guide partition plate 24, and flow guide partition plate 24 is the T type, and its bottom is used for separating feed line 22 and discharge line 23, and its top and bottom cooperation are used for carrying out the water conservancy diversion to the medium in the gasbag body 21 to divide into the inside of the gasbag body 21 in proper order: feed zone 27, flow zone 28, and exit zone 29 prevent gas or liquid flow from collecting at the end of feed line 22 and thereby affecting the rate of expansion of bladder body 21. The feeding pipeline 22 and the discharging pipeline 23 are respectively detachably connected with a sealing cover 26, and the feeding pipeline 22 and the discharging pipeline 23 can be respectively sealed.
Referring to fig. 4, 5 and 6, in the construction process of the section where the segment 10 has occurred and is prone to floating up, after the shield equipment completes the assembly and synchronous grouting of the segment 10, the screw cap 15 is detached from the hole 11 by using a forked screwdriver, the feeding pipeline 22 and the discharging pipeline 23 are taken out, the sealing cap 26 of the feeding pipeline 22 is opened and connected with an air pump, and the sealing cap 26 of the discharging pipeline 23 is kept closed. Gas is filled into to the gasbag body 21 inside by feed line 22 through the air pump, and gas pump goes into gasbag body 21 inside and leads to atmospheric pressure crescent, and gasbag body 21 pressurized inflation contacts outside country rock, applys equidimension reverse action counter-force to section of jurisdiction 10 outer wall from all directions to offset the buoyancy on that groundwater and thick liquid produced, restrain the upward floating phenomenon of section of jurisdiction 10 in thick liquid unset process.
After the upward floating phenomenon of the penetrated stratum is completely controlled, high-pressure slurry is injected into the air bag body 21 to fill the inner space, and the air bag body 21 is balanced after the slurry is solidified: the one-way valve 25 on the feeding pipeline 22 is manually disassembled to ensure that the slurry is smoothly injected into the air bag body 21, so that the blockage of the one-way valve 25 caused by particles in the slurry is avoided. And opening the sealing cover 26 of the discharge pipeline 23, connecting the feeding pipeline 22 with grouting equipment, extruding residual gas in the air bag body 21 through the grout injected into the air bag body 21, closing the sealing cover 26 on the feeding pipeline 22 and the discharge pipeline 23 when the grout is uniformly and continuously discharged from the discharge pipeline 23, and finishing the grouting process. The feeding pipeline 22 and the discharging pipeline 23 are returned to the initial position and are screwed into the holes 11 again through the screw cap 15, after the slurry in the air bag body 21 is completely solidified, the complete construction process that the air bag body 21 resists the buoyancy force on the segment 10 is finished, the effective solution and control of the upward floating phenomenon of the segment 10 are finally realized, the integral construction quality and the later safety of the segment 10 in the process are ensured,
the operation process of the invention is as follows: (1) assembling the duct piece 10 by using a standard block 12, an adjacent block 13 and a capping block 14; (2) unscrewing the screw cap 15, taking out the feeding pipeline 22 and filling high-pressure gas; (3) the air bag body 21 expands and contacts with the outside confining pressure, and applies acting force resisting floating upward to the pipe piece 10; (4) after the pipe piece 10 is stabilized, the one-way valve 25 is detached, and slurry is filled into the feeding pipeline 22; (5) when the slurry is uniformly and continuously discharged from the discharge pipeline 23, the slurry in the front airbag body 21 completely extrudes the airflow; (6) the feed line 22 and the discharge line 23 are respectively closed by a cover 26; (7) then screwing down the screw cap 15 to seal the hole 11; (8) the slurry in the air bag body 21 is solidified, and the construction process of resisting the buoyancy force on the segment 10 is finished.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The utility model provides a cushion airbag device behind wall that prevents section of jurisdiction come-up which characterized in that includes: an airbag module (20) disposed on the tube sheet (10);
seted up hole (11) on section of jurisdiction (10), gasbag subassembly (20) are including setting up gasbag body (21) in the section of jurisdiction (10) outside and respectively with feeding pipeline (22) and discharge pipeline (23) of gasbag body (21) intercommunication, feeding pipeline (22) with discharge pipeline (23) run through respectively hole (11).
2. The behind-the-wall buffer airbag device for preventing the floating up of a tube sheet as claimed in claim 1, wherein a baffle (24) is provided inside the airbag body (21), the baffle (24) separates the feeding pipeline (22) and the discharging pipeline (23), and divides the inside of the airbag body (21) into a feeding area (27), a flowing area (28) and a discharging area (29).
3. The behind-the-wall buffer airbag device for preventing floating up of a segment as claimed in claim 2, wherein a check valve (25) is connected to the feeding line (22).
4. The behind-the-wall buffer airbag device for preventing floating up of a duct piece according to claim 3, wherein a cover (26) is detachably attached to each of the feed line (22) and the discharge line (23).
5. The behind-the-wall cushion airbag device for preventing floating-up of a segment as claimed in any one of claims 1 to 4, wherein the segment (10) comprises: the device comprises a standard block (12), an adjacent block (13) and a top sealing block (14) which are respectively provided with the holes (11), wherein the standard block (12), the adjacent block (13) and the top sealing block (14) are detachably connected.
6. The wall rear buffering air bag device for preventing the floating of the duct piece according to claim 5, wherein one end of the hole (11) far away from the air bag body (21) is detachably connected with a spiral cover (15), the spiral cover (15) comprises a screw rod (17) connected with the hole (11) and a blocking cover (18) arranged at the end part of the screw rod (17), and the blocking cover (18) is in sealing fit with the hole (11).
7. The wall rear buffer air bag device for preventing the floating of the duct piece according to claim 6, wherein a fork-shaped groove (16) is formed on one surface of the blocking cover (18) far away from the screw rod (17).
8. A construction method of a rear wall cushion airbag device for preventing a duct piece from floating up, which adopts the rear wall cushion airbag device for preventing a duct piece from floating up of any one of claims 1 to 7, comprising the steps of:
s1: prefabricating the holes (11) in the tube sheet (10);
s2: mounting the airbag module (20) to each of the segments (10);
s3: filling the gas bag body (21) with high-pressure gas through the feeding pipeline (22);
s4: the air bag body (21) is expanded to prevent the pipe piece (10) from floating upwards;
s5: disassembling the one-way valve (25), filling slurry into the air bag body (1) and extruding gas;
s6: when the discharging pipeline (23) uniformly discharges the slurry, stopping grouting;
s7: the feed line (22) and the discharge line (23) are each closed by the closure cap (26), and the bore (11) is closed by the screw cap (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110755608.5A CN113266391B (en) | 2021-07-05 | 2021-07-05 | Wall rear buffer air bag device for preventing pipe piece from floating upwards and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110755608.5A CN113266391B (en) | 2021-07-05 | 2021-07-05 | Wall rear buffer air bag device for preventing pipe piece from floating upwards and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113266391A true CN113266391A (en) | 2021-08-17 |
| CN113266391B CN113266391B (en) | 2024-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110755608.5A Active CN113266391B (en) | 2021-07-05 | 2021-07-05 | Wall rear buffer air bag device for preventing pipe piece from floating upwards and construction method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN113266391B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0726895A (en) * | 1993-07-12 | 1995-01-27 | Nippon Shield Eng Kk | Segment |
| KR20080083246A (en) * | 2008-08-04 | 2008-09-17 | 강릉건설 주식회사 | Leakage prevention method for tunnel using multiple cushion rings |
| KR101587761B1 (en) * | 2015-05-18 | 2016-02-03 | 주식회사 삼천리이엔지 | Airbag apparatus for conduit |
| US20160169435A1 (en) * | 2015-02-09 | 2016-06-16 | SAFEKEY Engineering Technology(Zhengzhou), Ltd. | Polymer composite grouting method for blocking leaking and sand inrush of underground pipelines |
| 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 |
| CN111236971A (en) * | 2020-01-19 | 2020-06-05 | 天津大学 | Air bag type duct piece for urban shield tunnel and operation method thereof |
| CN111963201A (en) * | 2020-08-27 | 2020-11-20 | 中铁二十局集团有限公司 | Tunnel segment structure and construction method |
| CN112855186A (en) * | 2021-04-07 | 2021-05-28 | 中铁四局集团有限公司 | Shield station-crossing segment protection airbag construction method |
-
2021
- 2021-07-05 CN CN202110755608.5A patent/CN113266391B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0726895A (en) * | 1993-07-12 | 1995-01-27 | Nippon Shield Eng Kk | Segment |
| KR20080083246A (en) * | 2008-08-04 | 2008-09-17 | 강릉건설 주식회사 | Leakage prevention method for tunnel using multiple cushion rings |
| US20160169435A1 (en) * | 2015-02-09 | 2016-06-16 | SAFEKEY Engineering Technology(Zhengzhou), Ltd. | Polymer composite grouting method for blocking leaking and sand inrush of underground pipelines |
| KR101587761B1 (en) * | 2015-05-18 | 2016-02-03 | 주식회사 삼천리이엔지 | Airbag apparatus for conduit |
| 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 |
| CN111236971A (en) * | 2020-01-19 | 2020-06-05 | 天津大学 | Air bag type duct piece for urban shield tunnel and operation method thereof |
| CN111963201A (en) * | 2020-08-27 | 2020-11-20 | 中铁二十局集团有限公司 | Tunnel segment structure and construction method |
| CN112855186A (en) * | 2021-04-07 | 2021-05-28 | 中铁四局集团有限公司 | Shield station-crossing segment protection airbag construction method |
Non-Patent Citations (1)
| Title |
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| 张君;赵林;周佳媚;刘欢;张迁;: "盾构隧道管片上浮的机制研究", 铁道标准设计, no. 10, pages 88 - 93 * |
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| CN113266391B (en) | 2024-05-24 |
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