CN103410523A - Double-layer water-stopping steel ring for shield starting tunnel portal and mounting method of double-layer water-stopping steel ring - Google Patents
Double-layer water-stopping steel ring for shield starting tunnel portal and mounting method of double-layer water-stopping steel ring Download PDFInfo
- Publication number
- CN103410523A CN103410523A CN2013103754769A CN201310375476A CN103410523A CN 103410523 A CN103410523 A CN 103410523A CN 2013103754769 A CN2013103754769 A CN 2013103754769A CN 201310375476 A CN201310375476 A CN 201310375476A CN 103410523 A CN103410523 A CN 103410523A
- Authority
- CN
- China
- Prior art keywords
- double
- plate
- steel loop
- rubber tile
- circular plate
- 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.)
- Pending
Links
Images
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The invention provides a double-layer water-stopping steel ring for a shield starting tunnel portal. The double-layer water-stopping steel ring comprises an embedded steel ring, a cord fabric rubber plate, a fixed ring plate, a ribbed plate, a grouting pipe, a front plate, a first circular plate, a stiffening plate, a water-stopping tank, two turning plates and a second circular plate, wherein the water-stopping box is formed by welding of the fixed ring plate, the grouting pipe and the front plate, the ribbed plate is installed in the water-stopping tank, the stiffening plate is mounted on the outer side of the second circular plate, and the two turning plates are installed on the first circular plate and the second circular plate respectively. The double-layer water-stopping steel ring for the shield starting tunnel portal and a mounting method of the double-layer water-stopping steel ring have the advantages that mounting of the double-layer water-stopping steel ring for the shield starting tunnel portal adopts the structure of the water-stopping tank to proof water, the double-layer water-stopping steel ring is mounted, the structure is simple, the waterproof requirement for shield tunnels is met, the double-layer water-stopping steel ring is convenient to operate and has a good waterproof effect, and construction safety is guaranteed.
Description
Technical field
The invention belongs to the underground construction field, be specifically related to the double-deck sealing steel loop of a kind of shield launching portal and mounting method thereof.
Background technology
Along with the fast development of China Reconstructs, the characteristics that some are new have appearred in current highway, railway tunnel: section is large, tunnel is long, complex geologic conditions, and in face of tunnel piercing, the poor strata condition of side very easily causes Tunnel Landslide, water burst.These factors are not only brought great difficulty to constructing tunnel technically, also usually because burst accident causes casualties, construction delay, thereby cause huge economic loss, have also caused the great attention of state supervision department simultaneously.
The development of science and technology, a kind of shallow embedding shield tunnel engineering method has obtained more deep research and application abroad.The shallow embedding shield tunnel is more shallow because of its buried depth, and overburden layer is thin, so the anti-floating problem is more outstanding.In operational phase, the anchor pole anti-floating is adopted in the measure of shallow embedding shield tunnel more, yet there is no good solution for the waterproof problem of anchor pole anti-floating node.
Tradition shield tunnel buried depth is deep, and when construction, need to build dark larger working shaft.Follow the progress of the more harsh and Shield Construction Technique of tunnel line wiring condition, a kind ofly from ground discrepancy, the darker shield tunnel of buried depth, obtained certain application.
During conventional shield tunnel turnover hole, shield machine passes in and out from built active well side wall reserved opening, and the later stage is carried out the shutoff sealing.And the ground shield tunnel of coming in and going out starts from shallow base tunnel, without building active well, this just need to be for come in and go out a kind of new waterproof structure of the window of construction technology innovation and creation of shield tunnel of ground.
Shield launching portal sealing is an important process in shield-tunneling construction, when shield launching, portal sealing steel loop descends water and disadvantageous geology to play effective support interception over the ground, to prevent when the shield launching, underground water is directly from gushing out the space on shield shell and stratum, when serious, may cause surface subsidence, cause larger security incident.Existing portal sealing steel loop is all single layer structure, in general situation, can meet the construction demand, but in the situation that shield structure buried depth is dark, rich groundwater, water pressure is larger, if the generation that localized seepage can cause water burst, gush sand occurs, individual layer sealing steel loop security risk is larger, and security incident easily occurs.
Chinese patent CN200820187592.2 transforms the original anti-floating point of common underground structure, proposes combined type anti-float anchor rod node waterproof structure.But shallow embedding shield tunnel structure is spliced by prefabricated pipe section, and above-mentioned utility model can not directly be suitable for.
Therefore, those skilled in the art is devoted to develop a kind of new shield tunnel water proof structure, meets the waterproof demand of shield tunnel.
Summary of the invention
The invention provides the double-deck sealing steel loop of a kind of shield launching portal and mounting method thereof, localized seepage easily occurs, the technological deficiency that construction safety risk is larger to solve prior art individual layer sealing steel loop.
In order to solve above technical problem, the technical scheme that the present invention takes is:
The double-deck sealing steel loop of a kind of shield launching portal, the double-deck sealing steel loop of described shield launching portal comprises pre-buried steel loop, the cord rubber tile, fixing ring flat-plate, floor, Grouting Pipe, header board, the first Circular Plate, stiffener, the sealing case, turnover panel and the second Circular Plate, described sealing case is by described fixedly ring flat-plate, Grouting Pipe and header board are welded, described floor is arranged in described sealing case, described stiffener is arranged on the outside of described the second Circular Plate, described turnover panel has two to be arranged on respectively on described the first Circular Plate and the second Circular Plate, described the first Circular Plate is fixed on the bottom of described sealing case, described cord rubber tile comprises first cord rubber tile and second cord rubber tile, described pre-buried steel loop, first cord rubber tile and fixedly seamless cooperation being bolted between ring flat-plate, described header board, second cord rubber tile, fixedly seamless cooperation being bolted between ring flat-plate and the second Circular Plate.
Be preferably, described cord rubber tile in the form of a ring.
Be preferably, be provided with the first rotating shaft on described the first Circular Plate, be provided with the second rotating shaft on described the second Circular Plate, on described turnover panel, be provided with the hinged cover coordinated with described the first rotating shaft and the second rotating shaft.
Be preferably, the width of described sealing case is 400 ㎜, and described Grouting Pipe is of a size of 3*25mm.
The mounting method of the double-deck sealing steel loop of a kind of shield launching portal said method comprising the steps of:
A. the pre-buried steel loop of polishing;
B., first cord rubber tile is installed;
C., the sealing case is installed;
D., second cord rubber tile and fixing ring flat-plate are installed.
Be preferably, in step a, the exposed face of described pre-buried steel loop polished smooth.
Be preferably, in step b, brushing one deck butter on the exposed face of described first cord rubber tile, described first cord rubber tile and pre-buried steel loop are fixed by the M22 bolt.
Be preferably, in steps d, described fixedly ring flat-plate is divided into four sections to be installed, described header board, second cord rubber tile and fixedly ring flat-plate by the M22 bolt, fix.
The double-deck sealing steel loop of shield launching portal of the present invention and mounting method thereof, after shield cutter all enters interior portal and seals and set up mud hydraulic pressure, in case mud leakage occurs between cord rubber tile and shield shell, the constructor just can inject the sealing agent leak stopping in from portal steel case Grouting Pipe to the sealing case by slurry filling machine, after leakage problems solved, shield machine started normal driving.The double-deck sealing steel loop of shield launching portal of the present invention and mounting method thereof adopt sealing case waterproof, simple in structure, can meet the waterproof requirement of shield tunnel, simple to operate and have good antiseep effect, have ensured construction safety.
The accompanying drawing explanation
Fig. 1 is the topology view of the double-deck sealing steel loop of shield launching portal of the present invention;
Fig. 2 is the topology view of the double-deck sealing steel loop of shield launching portal of the present invention the first Circular Plate;
Fig. 3 is the topology view of the double-deck sealing steel loop of shield launching portal of the present invention the second Circular Plate;
Fig. 4 is the topology view of the double-deck sealing steel loop of shield launching portal of the present invention turnover panel.
The specific embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the present invention is clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
As shown in Figures 1 to 4: the double-deck sealing steel loop of shield launching portal is by pre-buried steel loop 1, cord rubber tile 2, fixedly ring flat-plate 3, floor 4, Grouting Pipe 5, header board 6, the first Circular Plate 7, stiffener 8, sealing case 9, turnover panel 10 and the second Circular Plate 11 form.Sealing case 9 is welded by fixedly ring flat-plate 3, Grouting Pipe 5 and header board 6, and floor 4 is arranged in sealing case 9.Fixedly the thickness of ring flat-plate 3 is 16mm, and the thickness of header board 6 is 16mm, and Grouting Pipe 5 is of a size of 3*25mm, and the width of sealing case 9 is 400mm.Wherein stiffener 8 is fixed on the outside of the second Circular Plate 11, fixedly ring flat-plate 3 and turnover panel 10 all have two, cord rubber tile 2 comprises first cord rubber tile 2a and second cord rubber tile 2b, and cord rubber tile 2 in the form of a ring, and turnover panel 10 is arranged on the first Circular Plate 7 and the second Circular Plate 11.On the first Circular Plate 7, be provided with the first rotating shaft 7a, on the second Circular Plate 11, be provided with the second rotating shaft 11a.On turnover panel 10, be provided with the hinged cover 10a coordinated with the first rotating shaft 7a and the second rotating shaft 11a, thereby realize coordinating of turnover panel 10 and the first Circular Plate 7, the second Circular Plate 11, and turnover panel 10 can rotate around the center of circle with the first rotating shaft 7a, the second rotating shaft 11a respectively.The first Circular Plate 7 is fixed on the bottom of sealing case 9, pre-buried steel loop 1, first cord rubber tile 2a and fixedly seamless cooperation being bolted between ring flat-plate 3, header board 6, second cord rubber tile 2b, fixedly seamless cooperation being bolted between ring flat-plate 3 and the second Circular Plate 11.
The mounting method of the double-deck sealing steel loop of shield launching portal comprises the following steps:
(1) the pre-buried steel loop 1 of polishing;
When the installation agent structure due to the operation reason, corrosion easily occurs in the exposed face out-of-flatness of pre-buried steel loop 1 long term exposure in moistening air, on pre-buried steel loop 1, be provided with bolt hole, before being installed, the sealing steel loop needs the exposed face of pre-buried steel loop 1 is carried out to grinding process, until the level and smooth no concave-convex injustice of the exposed face of pre-buried steel loop 1.
(2) first cord rubber tile 2a is installed;
First cord rubber tile 2a in the form of a ring and be provided with bolt hole, and the exposed face of first cord rubber tile 2a and pre-buried steel loop 1 is close to installation, before installing, need first brushing one deck butter on pre-buried steel loop 1 exposed face, and then first cord rubber tile 2a is installed; After installation, adopt the fixing pre-buried steel loop 1 of M22 bolt and first cord rubber tile 2a.
(3) sealing case 9 is installed;
Sealing case 9 by fixedly ring flat-plate 3, Grouting Pipe 5 and header board 6 by being welded, and be provided with bolt hole on sealing case 9, and sealing case 9 is arranged on to the outside of first cord rubber tile 2a, then tighten the nut of M22 bolt, guarantee seamless cooperation between sealing case 9, first cord rubber tile 2a and pre-buried steel loop 1 three, thereby guarantee good sealing effectiveness.
(4) installation second cord rubber tile 2b and fixedly ring flat-plate 3;
Be close to the outside of header board 6 second cord rubber tile 2b is installed, second cord rubber tile 2b prepared screw-bolt hole and the corresponding installation of bolt hole on header board 6, then fixedly ring flat-plate 3 is installed, fixedly ring flat-plate 3 is divided into four sections and installs, fixedly ring flat-plate 3 prepared screw-bolt holes and the corresponding installation of second cord rubber tile 2b, installation adopts the M22 bolt to be connected and fixed later, in order to play good sealing effectiveness.
After the installation of the double-deck sealing steel loop of shield launching portal, finally carry out the inspection of antiseep effect; After shield cutter all enters interior portal and seals and set up mud hydraulic pressure, in case mud leakage occurs between cord rubber tile 2 and shield shell, the constructor just can be by slurry filling machine from portal steel case Grouting Pipe 5 to the leak stopping of the interior injection sealing agent of sealing case 9, after leakage problems solved, shield machine can start normal driving.
The double-deck sealing steel loop of shield launching portal of the present invention and mounting method thereof, owing to having adopted sealing case 9 structures, installed double-deck sealing steel loop, simple in structure, meet the waterproof requirement of shield tunnel, easy to operate and have good antiseep effect, ensured construction safety.
Finally it should be noted that: above embodiment only illustrates technical scheme of the present invention, is not intended to limit; Although with reference to previous embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme that aforementioned each embodiment puts down in writing, or part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (8)
1. the double-deck sealing steel loop of a shield launching portal, it is characterized in that, the double-deck sealing steel loop of described shield launching portal comprises pre-buried steel loop, the cord rubber tile, fixing ring flat-plate, floor, Grouting Pipe, header board, the first Circular Plate, stiffener, the sealing case, turnover panel and the second Circular Plate, described sealing case is by described fixedly ring flat-plate, Grouting Pipe and header board are welded, described floor is arranged in described sealing case, described stiffener is arranged on the outside of described the second Circular Plate, described turnover panel has two to be arranged on respectively on described the first Circular Plate and the second Circular Plate, described the first Circular Plate is fixed on the bottom of described sealing case, described cord rubber tile comprises first cord rubber tile and second cord rubber tile, described pre-buried steel loop, first cord rubber tile and fixedly seamless cooperation being bolted between ring flat-plate, described header board, second cord rubber tile, fixedly seamless cooperation being bolted between ring flat-plate and the second Circular Plate.
2. the double-deck sealing steel loop of shield launching portal according to claim 1, is characterized in that, described cord rubber tile in the form of a ring.
3. the double-deck sealing steel loop of shield launching portal according to claim 1, it is characterized in that, on described the first Circular Plate, be provided with the first rotating shaft, be provided with the second rotating shaft on described the second Circular Plate, on described turnover panel, be provided with the hinged cover coordinated with described the first rotating shaft and the second rotating shaft.
4. the double-deck sealing steel loop of shield launching portal according to claim 1, is characterized in that, the width of described sealing case is 400 ㎜, and described Grouting Pipe is of a size of 3*25mm.
5. the mounting method of the double-deck sealing steel loop of a shield launching portal said method comprising the steps of:
A. the pre-buried steel loop of polishing;
B., first cord rubber tile is installed;
C., the sealing case is installed;
D., second cord rubber tile and fixing ring flat-plate are installed.
6. the mounting method of the double-deck sealing steel loop of shield launching portal according to claim 5, is characterized in that, in step a, the exposed face of described pre-buried steel loop polished smooth.
7. the mounting method of the double-deck sealing steel loop of shield launching portal according to claim 5, it is characterized in that, in step b, brushing one deck butter on the exposed face of described first cord rubber tile, described first cord rubber tile and pre-buried steel loop are fixed by the M22 bolt.
8. the mounting method of the double-deck sealing steel loop of shield launching portal according to claim 5, is characterized in that, in steps d, described fixedly ring flat-plate is divided into four sections to be installed, described header board, second cord rubber tile and fixedly ring flat-plate by the M22 bolt, fix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103754769A CN103410523A (en) | 2013-08-26 | 2013-08-26 | Double-layer water-stopping steel ring for shield starting tunnel portal and mounting method of double-layer water-stopping steel ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103754769A CN103410523A (en) | 2013-08-26 | 2013-08-26 | Double-layer water-stopping steel ring for shield starting tunnel portal and mounting method of double-layer water-stopping steel ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103410523A true CN103410523A (en) | 2013-11-27 |
Family
ID=49603557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103754769A Pending CN103410523A (en) | 2013-08-26 | 2013-08-26 | Double-layer water-stopping steel ring for shield starting tunnel portal and mounting method of double-layer water-stopping steel ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103410523A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899324A (en) * | 2014-04-10 | 2014-07-02 | 中铁五局（集团）有限公司 | Construction method for balance originating of earth pressure balance shield machine |
| CN103924986A (en) * | 2013-12-12 | 2014-07-16 | 中铁十四局集团有限公司 | Overall installing device and installing method for extra-large shield launching hole door sealing steel ring |
| CN105134223A (en) * | 2015-08-31 | 2015-12-09 | 中铁三局集团天津建设工程有限公司 | Construction method for improving shield starting steel box sealing performance |
| CN106837359A (en) * | 2017-02-09 | 2017-06-13 | 中铁十局集团城市轨道工程有限公司 | A kind of arrival portal sealing device and seal construction method |
| CN106948829A (en) * | 2017-04-29 | 2017-07-14 | 中铁局集团有限公司 | A kind of slurry shield originates portal sealing structure and its construction method |
| CN107503758A (en) * | 2017-10-17 | 2017-12-22 | 上海城建市政工程（集团）有限公司 | A kind of miniature tube curtain push-bench originates water stop device for opening |
| CN107989637A (en) * | 2017-11-17 | 2018-05-04 | 上海隧道工程有限公司 | Embedded set formula antipriming is enclosed in shield launching hole |
| CN108150201A (en) * | 2017-12-29 | 2018-06-12 | 上海市机械施工集团有限公司 | Tunnel antipriming and construction method |
| CN109026032A (en) * | 2018-07-20 | 2018-12-18 | 中铁三局集团有限公司 | Under turn over beam and invade the lower shield translating construction method of limit |
| CN111456755A (en) * | 2020-04-30 | 2020-07-28 | 中铁四局集团第四工程有限公司 | Small-curvature-radius tunnel shield starting steel box and construction method |
| CN111828025A (en) * | 2020-07-21 | 2020-10-27 | 中铁十一局集团有限公司 | Shield receiving construction method and receiving tunnel portal water stopping device |
| CN112983445A (en) * | 2021-03-11 | 2021-06-18 | 中铁三局集团华东建设有限公司 | Water-rich sand layer shield launching method and device based on portal extension ring device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1793611A (en) * | 2005-12-27 | 2006-06-28 | 上海市隧道工程轨道交通设计研究院 | Water-proof method for shield tunnel outlet |
| CN1793609A (en) * | 2005-12-27 | 2006-06-28 | 上海市隧道工程轨道交通设计研究院 | Outlet water-proof method for large diameter shield tunnel |
-
2013
- 2013-08-26 CN CN2013103754769A patent/CN103410523A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1793611A (en) * | 2005-12-27 | 2006-06-28 | 上海市隧道工程轨道交通设计研究院 | Water-proof method for shield tunnel outlet |
| CN1793609A (en) * | 2005-12-27 | 2006-06-28 | 上海市隧道工程轨道交通设计研究院 | Outlet water-proof method for large diameter shield tunnel |
Non-Patent Citations (2)
| Title |
|---|
| 陆明等: "盾构法隧道出洞防水装置的设计优化与演变", 《中国建筑防水》 * |
| 黄学军等: "城市大直径泥水盾构始发关键技术", 《西部探矿工程》 * |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924986A (en) * | 2013-12-12 | 2014-07-16 | 中铁十四局集团有限公司 | Overall installing device and installing method for extra-large shield launching hole door sealing steel ring |
| CN103924986B (en) * | 2013-12-12 | 2015-12-30 | 中铁十四局集团有限公司 | A kind of super large shield launching portal sealing steel ring integral installation device |
| CN103899324A (en) * | 2014-04-10 | 2014-07-02 | 中铁五局（集团）有限公司 | Construction method for balance originating of earth pressure balance shield machine |
| CN105134223A (en) * | 2015-08-31 | 2015-12-09 | 中铁三局集团天津建设工程有限公司 | Construction method for improving shield starting steel box sealing performance |
| CN106837359A (en) * | 2017-02-09 | 2017-06-13 | 中铁十局集团城市轨道工程有限公司 | A kind of arrival portal sealing device and seal construction method |
| CN106837359B (en) * | 2017-02-09 | 2018-10-02 | 中铁十一局集团城市轨道工程有限公司 | A kind of arrival portal sealing device and seal construction method |
| CN106948829A (en) * | 2017-04-29 | 2017-07-14 | 中铁局集团有限公司 | A kind of slurry shield originates portal sealing structure and its construction method |
| CN107503758B (en) * | 2017-10-17 | 2024-05-14 | 上海城建市政工程（集团）有限公司 | Originating hole water stop device of miniature pipe curtain push bench |
| CN107503758A (en) * | 2017-10-17 | 2017-12-22 | 上海城建市政工程（集团）有限公司 | A kind of miniature tube curtain push-bench originates water stop device for opening |
| CN107989637A (en) * | 2017-11-17 | 2018-05-04 | 上海隧道工程有限公司 | Embedded set formula antipriming is enclosed in shield launching hole |
| CN108150201A (en) * | 2017-12-29 | 2018-06-12 | 上海市机械施工集团有限公司 | Tunnel antipriming and construction method |
| CN109026032A (en) * | 2018-07-20 | 2018-12-18 | 中铁三局集团有限公司 | Under turn over beam and invade the lower shield translating construction method of limit |
| CN111456755A (en) * | 2020-04-30 | 2020-07-28 | 中铁四局集团第四工程有限公司 | Small-curvature-radius tunnel shield starting steel box and construction method |
| CN111828025A (en) * | 2020-07-21 | 2020-10-27 | 中铁十一局集团有限公司 | Shield receiving construction method and receiving tunnel portal water stopping device |
| CN112983445A (en) * | 2021-03-11 | 2021-06-18 | 中铁三局集团华东建设有限公司 | Water-rich sand layer shield launching method and device based on portal extension ring device |
| CN112983445B (en) * | 2021-03-11 | 2023-08-25 | 中铁三局集团华东建设有限公司 | Water-rich sand layer shield starting method and device based on tunnel portal extension ring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103410523A (en) | Double-layer water-stopping steel ring for shield starting tunnel portal and mounting method of double-layer water-stopping steel ring | |
| CN107191197B (en) | Shield segment and construction method thereof in tunnel through mine method by shield air pushing | |
| CN101781993B (en) | Shield driving construction method for bearing water-rich soil layer | |
| CN108204240B (en) | Anti-floating reinforcement system and reinforcement method for newly-built tunnel to span existing tunnel in short distance | |
| CN105298507B (en) | A kind of underground pipe gallery construction method of top open cut bottom tunneler construction | |
| CN209145612U (en) | A kind of anti-floating type section of jurisdiction for shield tunnel | |
| CN105240024B (en) | A kind of method of parallel shield method enlarging construction subway station | |
| CN105201518B (en) | Disassembling method is received in a kind of major diameter slurry balance shield hole | |
| CN104675403A (en) | Underground space construction method and supporting structure | |
| CN106988753A (en) | A kind of U-shaped plain concrete ground-connecting-wall adds steel bushing shield structure and its method of reseptance | |
| CN103670446B (en) | Circular diversion tunnel 2/3 circle concrete-liner construction method | |
| CN111396067A (en) | Comprehensive shield steel sleeve receiving construction method in complex environment | |
| CN103924978A (en) | Construction method for sinking inner layer well wall with freezing method | |
| CN203238649U (en) | Combined type waterproof curtain | |
| CN102094659A (en) | Shield entry spring hinge plate sealing device | |
| CN105484277A (en) | Component for tubular well precipitation construction in elevator foundation pit or sump and construction method | |
| CN205117355U (en) | Branch storehouse formula sand gas that replaces tunnel just to serve as a contrast closes and fills lining cutting structure | |
| CN204492847U (en) | A kind of supporting and protection structure of underground space reverse construction | |
| CN109469068A (en) | A kind of rich water soft stratum excavation of foundation pit and Support Method | |
| CN203050779U (en) | Tunnel drainage structure suitable for bias pressure rich water strata | |
| CN105240023A (en) | Method of adopting curved pipe-jacking supporting structure for extension of shield-driven subway station | |
| CN105134223B (en) | A kind of construction method for improving shield launching steel case sealing | |
| CN204941551U (en) | A kind of subway station of Curve Pipe Jacking supporting and protection structure enlarging shield-tunneling construction | |
| CN104847373B (en) | Gravel clay stratum shield export ＆ import construction technology | |
| CN209277905U (en) | Tunnel bilayer I-steel preliminary bracing structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20131127 |