CN107489435B - Replaceable inflatable water stop for mine tunnel - Google Patents
Replaceable inflatable water stop for mine tunnel Download PDFInfo
- Publication number
- CN107489435B CN107489435B CN201710919693.8A CN201710919693A CN107489435B CN 107489435 B CN107489435 B CN 107489435B CN 201710919693 A CN201710919693 A CN 201710919693A CN 107489435 B CN107489435 B CN 107489435B
- Authority
- CN
- China
- Prior art keywords
- air bag
- water stop
- tunnel
- inflatable
- arc
- 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.)
- Active
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
- E21D11/385—Sealing means positioned between adjacent lining members
- E21D11/386—Sealing means positioned between adjacent lining members inflatable sealing means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The application discloses a replaceable inflatable water stop for a mine tunnel, which solves the problem that the existing water stop cannot effectively solve the water seepage and water leakage of the tunnel in the prior art, has the advantages of convenient construction, capability of improving the waterproof capability of an expansion joint of the tunnel and convenient replacement in the tunnel operation period, and adopts the technical scheme that: including the gasbag groove, gasbag groove and gasbag laminating setting, the gasbag groove includes the arc section of jurisdiction of two relative settings, has the clearance of setting for between the tip of two arc section of jurisdictions, fills in waterproof mineral grease between arc section of jurisdiction inboard and the gasbag, and the arc section of jurisdiction outside is connected and is set up a plurality of anchor clamps.
Description
Technical Field
The application relates to the technical field of tunnels and underground engineering, in particular to a replaceable inflatable water stop for a mine tunnel.
Background
In recent years, tunnels and underground projects in China are unprecedented to develop rapidly, and the number of tunnels is large. At present, a relatively perfect standard system exists for tunnel design and construction in China, but a relatively great problem still exists in the aspect of later maintenance. In the tunnel operation process, due to the influence of underground water, the water seepage and water leakage phenomenon at the deformation joint are quite common, and the tunnel waterproof measures in the operation stage are imperative to be enhanced.
The existing tunnel operation period waterproof mainly has the following problems:
(1) The construction of the tunnel waterproof system relies on a waterproof board and a drain pipe between the secondary lining and the primary lining, and a water stop at the expansion joint is positioned behind the secondary lining and does not have replacement conditions.
(2) The water stop at the expansion joint has complex construction process of clamping reinforcing steel bars of the middle-buried type steel edge rubber water stop widely used at present, and the construction quality is not easy to guarantee; the adoption of the external-sticking waterproof belt tunnel is convenient to replace, but the attractive appearance is affected.
(3) The tunnel structure is easy to deform and dislocate at the deformation joint due to the influence of the stress characteristic of the deformation joint of the tunnel, and the rubber water stop belt is easy to break and destroy along with the deformation of concrete at two sides of the deformation joint, so that the deformation joint leaks water.
(4) The tunnel leakage water disaster is incurable, and the current common expansion joint water stopping system is completed once when the tunnel is constructed for secondary lining, has no maintainability, can only seal traffic and control by means of grouting and the like, and has great influence on tunnel operation.
In summary, in the prior art, the problem that the water stop belt cannot effectively solve the water seepage and water leakage of the tunnel is still lacking in an effective solution.
Disclosure of Invention
In order to overcome the defects in the prior art, the application provides a replaceable inflatable water stop for a mine tunnel, which has the effects of being convenient to construct, improving the waterproof capability of a tunnel expansion joint and being convenient to replace in the tunnel operation period;
further, the application adopts the following technical scheme:
a removable inflatable waterstop for mine method tunnel, includes the gasbag groove, gasbag groove and gasbag laminating set up, the gasbag groove includes the arc section of jurisdiction of two relative settings, has the settlement clearance between the tip of two arc section of jurisdictions, fills in waterproof mineral grease between arc section of jurisdiction inboard and the gasbag, and the arc section of jurisdiction outside is connected and is set up a plurality of anchor clamps.
Further, the longitudinal section of the air bag is matched with the section of the tunnel, and the transverse section of the air bag is circular.
Further, the longitudinal section of the arc-shaped duct piece is matched with the section of the tunnel, and the transverse section of the arc-shaped duct piece is semicircular.
Further, the air bag is connected with the inflator pump through a pipeline, an inflation inlet is arranged on the pipeline, and an air pressure gauge is arranged at the inflation inlet.
Further, an air bag connector is arranged at the air bag setting position and comprises an externally attached water stop, the externally attached water stop is transversely attached to the outer side of the air bag, and two ends of the externally attached water stop are connected with a fixing piece; the external-adhesion type water stop belt is fixed on the secondary lining concrete through a fixing piece.
Further, waterproof mineral grease is filled between the externally attached water stop and the air bag.
Furthermore, the matched part of the external-adhesion type water stop belt and the air bag is semicircular, and two end parts of the external-adhesion type water stop belt extend in the direction opposite to the air bag.
Furthermore, the anchoring parts are arranged radially on the outer side of the arc-shaped duct piece, and the anchoring parts are fixedly connected with the two lining steel bars.
Further, asphalt mastic is filled between the gap at the end part of the arc-shaped duct piece and the externally attached rubber water stop belt attached to the tunnel waterproof plate.
Compared with the prior art, the application has the beneficial effects that:
(1) The water stop belt can replace the steel edge rubber water stop belt with high replacement difficulty in the current tunnel operation process, has low replacement difficulty and is convenient for later maintenance.
(2) The water stop belt is inflated through the inflation holes, and the pressure is controlled through the barometer, so that the air bag and the air bag wall are fully compacted. The air bag state is checked by the barometer at regular intervals in the tunnel operation period, and when the air bag state does not meet the requirement or the water leakage phenomenon is found, the air pump can be timely utilized to inflate for simple treatment, so that the maintenance is simple and convenient, and the driving is not influenced.
(3) The air bag water stop belt can be added in the concrete pouring process, and can be added after the secondary lining construction is completed, so that the construction difficulty is low, the construction efficiency can be improved, and the construction quality is ensured.
(4) The air bag groove segment fracture of the water stop belt can provide space for the expansion and contraction of the tunnel lining structure, so that the normal performance of an expansion joint is ensured, and meanwhile, the expansion joint and the air bag groove fracture can provide an operation space for the addition and the replacement of an air bag.
(5) The application adopts the flexible air bag water stop belt with better deformability, and can still ensure better fitting property with the air bag wall when the secondary lining concrete at two sides of the deformation joint is displaced relatively. Meanwhile, the flexible air bags are filled with waterproof mineral grease, so that the air bags and air bag grooves are fully compacted, and the waterproof property is ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
FIG. 1 is a top cross-sectional view of the present application;
FIG. 2 is a front cross-sectional view of the water stop of the present application at the inflation inlet;
FIG. 3 is a schematic cross-sectional view of an airbag trough;
FIG. 4 is a schematic illustration of the engagement of an airbag with an airbag adapter;
in the figure, 1, an air bag; 2. waterproof mineral grease; 3. an air bag groove; 4. pitch mastic; 5. an inflation inlet; 6. externally attached rubber water stop; 7. a tunnel waterproof board; 8. an air pressure gauge; 9. an inflator pump; 10. a manhole; 11. arc-shaped duct pieces; 12. an anchor; 13. an externally-attached water stop belt; 14. and (5) fixing bolts.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
As described in the background art, the prior art has the problem that the existing water stop belt cannot effectively solve the water seepage and water leakage of the tunnel, and in order to solve the technical problem, the application provides a replaceable inflatable water stop belt for a mine tunnel.
In a typical embodiment of the application, as shown in fig. 1-4, a replaceable inflatable water stop for a mine tunnel is provided, and the inflatable water stop comprises an air bag groove 3, wherein the air bag groove 3 is attached to an air bag 1, the air bag groove 3 comprises two oppositely arranged arc-shaped duct pieces 11, a set gap is arranged between the end parts of the two arc-shaped duct pieces 11, waterproof mineral grease 2 is filled between the inner side of the arc-shaped duct pieces 11 and the air bag 1, a plurality of anchoring pieces 12 are connected and arranged on the outer side of the arc-shaped duct pieces 11, anchoring pieces 12 adopt anchoring steel bars in the embodiment, the distance between the anchoring steel bars is 0.5m, the air bag groove 3 is firmly welded with two lining steel bars, the outer wall is tightly combined with secondary lining concrete, and the outer side wall is guaranteed not to leak water. The waterproof mineral grease 2 is applied to uniformly fill the area between the balloon wall and the balloon and has a certain thickness. The waterproof mineral grease 2 can maintain a stable state between solid and liquid at all seasons.
The anchoring piece 12 is arranged radially outside the arc-shaped duct piece 11, and the anchoring piece 12 is fixedly connected with the two lining steel bars.
Asphalt mastic 4 is filled between the gap at the end part of the arc-shaped duct piece 11 and the externally attached rubber water stop 6 attached to the tunnel waterproof board 7.
The longitudinal section of the airbag 1 matches the tunnel section, and the cross section of the airbag 1 is circular (the cross section of the airbag is a section in a plan view, and the longitudinal section of the airbag is a section in a front view). The air bag 1 is made of high-strength polymer materials, and is manufactured according to the outline shape of a tunnel, the air bag 1 is attached to the tunnel shape in the longitudinal direction, has high pressure bearing performance, has good deformation performance, and has the inflation expansion size which can reach 1.5 times of the diameter of an air bag groove when the periphery is pressureless, and the diameter of the air bag in a non-inflation state is slightly smaller than the diameter of the air bag groove. The bearable pressure of the air bag 1 is determined according to the Kelarong equation by the volume of the air bag groove when the construction joint reaches the maximum width and the minimum width.
The longitudinal section of the arc-shaped duct piece 11 matches the tunnel section, and the cross section of the arc-shaped duct piece 11 is semicircular (the longitudinal section and the cross section of the arc-shaped duct piece 11 are defined as the same as those of the air bag). The arc section of jurisdiction in gasbag groove is according to tunnel section profile shape preparation, and arc section of jurisdiction 11 can adopt the steel-pipe piece, and two anchor bars are respectively established to every semicircular section of jurisdiction back, and the gasbag inslot wall should be leveled, and the outer wall can closely combine with the concrete.
The air bag 1 is connected with an inflator pump 9 through a pipeline, an inflation inlet 5 is arranged on the pipeline, and an air pressure gauge 8 is arranged at the inflation inlet 5. The air charging port is in the form of an air tap, and has good sealing performance. The barometer is positioned behind the inflation inlet, can be permanently fixed on the air bag behind the inflation inlet, and can also monitor the air pressure by adopting a temporary barometer during inflation and inspection. The air bag is tightly combined with the wall of the air bag tank by inflating and pressurizing the air bag, so that the aim of isolating underground water is fulfilled.
The inflation inlet 5 and the barometer 8 of the air bag 1 are arranged at the overhaul hole 10 of the tunnel section shown in fig. 2, the overhaul hole 10 is reserved at the tunnel overhaul channel, the air pressure of the air bag is regularly checked through the barometer 8, and when the air pressure does not meet the requirement, the air is inflated through the inflation inlet 5 in time, so that the air bag is simply maintained. In the tunnel operation process, when the gasbag state does not accord with the requirement, can be more convenient change the gasbag through the space that inspection hole and expansion joint provided, reach antiseep purpose: when the air bag needs to be replaced, the air bag is taken out from the maintenance hole, and one end of a new air bag penetrates into the air bag groove 3 from the maintenance hole for replacement. During the process, steel wires can be used for traction through the expansion joints and the air bag wall fracture, or used for traction by using the old air bag. In the tunnel construction process, an uninflated air bag can be placed in the position of the maintenance hole and inflated through the inflation hole, so that a water stopping system is formed with other parts.
The air bag 1 is provided with an air bag connector at a set position, the air bag connector is arranged in a maintenance hole, the air bag connector comprises an externally attached water stop 13, the externally attached water stop 13 is transversely attached to the outer side of the air bag 1, two ends of the externally attached water stop 13 are connected with fixing pieces, and the fixing pieces adopt fixing bolts 14 in the embodiment; the air bag 1 is tightly wrapped by the external-adhesion type water stop 13, and the external-adhesion type water stop 13 is fixed on the secondary lining concrete through the fixing bolts 14.
A waterproof mineral grease 2 is arranged between the external-adhesion type water stop 13 and the air bag 1, and the waterproof mineral grease 2 is uniformly coated on the gap between the external-adhesion type water stop 13 and the air bag 1.
The matched part of the external adhesive water stop 13 and the air bag 1 is semicircular, and two end parts of the external adhesive water stop 13 extend in the direction opposite to the air bag 1.
The specific implementation process of the inflatable water stop belt comprises the following steps:
when the secondary lining of the tunnel is constructed, after the waterproof plate 7 and the externally attached rubber water stop 6 are constructed, secondary lining reinforcing steel bars are constructed, the anchoring pieces 12 of the air bag groove 3 are welded with the secondary lining reinforcing steel bars, then a template is built, and secondary lining concrete is poured.
Filling asphalt mastic 4 into the gap between the air bag grooves 3 after the steps are finished, filling waterproof mineral grease 2 into the air bag grooves 3, filling the air bag 1 into the air bag grooves 3, inflating the air bag 1 through the inflation inlet 5 by using the inflator pump 9, monitoring inflation pressure through the barometer 8 in the inflation process, tightly combining the air bag with the air bag wall, and sealing the inflation inlet 5 after the inflation is finished.
The water stop belt is concealed and attractive, can replace the steel edge rubber water stop belt with higher replacement difficulty in the current tunnel operation process, has low replacement difficulty and is convenient for later maintenance. And the construction is convenient, the waterproof capability of the tunnel expansion joint can be improved, and the tunnel operation period can be conveniently replaced.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (6)
1. The replaceable inflatable water stop belt for the mine tunnel is characterized by comprising an air bag groove, wherein the air bag groove is attached to the air bag, the air bag groove comprises two arc-shaped duct pieces which are arranged oppositely, a set gap is reserved between the end parts of the two arc-shaped duct pieces, waterproof mineral grease is filled between the inner side of the arc-shaped duct pieces and the air bag, and a plurality of anchoring pieces are connected to the outer side of the arc-shaped duct pieces;
the longitudinal section of the air bag is matched with the section of the tunnel, and the cross section of the air bag is circular;
the air bag joint is arranged at the air bag setting position and comprises an externally attached water stop, the externally attached water stop is transversely attached to the outer side of the air bag, and two ends of the externally attached water stop are connected with the fixing piece;
waterproof mineral grease is filled between the externally attached water stop belt and the air bag;
the joint of the external-adhesion type water stop belt and the air bag is semicircular, and two end parts of the external-adhesion type water stop belt extend in the direction opposite to the air bag;
the air bags are tightly wrapped by the external-adhesion type water stop, and the external-adhesion type water stop is fixed on the secondary lining concrete through a fixing bolt; the air bag joint is arranged in the overhaul hole;
when the air bag needs to be replaced, the air bag is taken out from the maintenance hole, one end of the new air bag penetrates into the air bag groove from the maintenance hole to be replaced, and during the replacement, steel wires can be used for traction through the expansion joint and the air bag wall fracture, or the old air bag is used for traction.
2. The inflatable waterstop of claim 1 wherein the longitudinal section of the arcuate segment matches the tunnel cross-section and the transverse section of the arcuate segment is semi-circular.
3. The inflatable waterstop of claim 1 wherein the air bladder is connected to an inflator via a conduit.
4. The inflatable waterstop of claim 3 wherein the conduit is provided with an inflation port at which a barometer is provided.
5. The inflatable waterstop of claim 1 wherein the anchors are radially disposed outside the arcuate segment and are fixedly connected to the secondary reinforcing bars.
6. The inflatable waterstop of claim 1 wherein asphalt mastic is filled between the end gap of the arcuate segment and the externally attached rubber waterstop attached to the tunnel flashing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710919693.8A CN107489435B (en) | 2017-09-30 | 2017-09-30 | Replaceable inflatable water stop for mine tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710919693.8A CN107489435B (en) | 2017-09-30 | 2017-09-30 | Replaceable inflatable water stop for mine tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107489435A CN107489435A (en) | 2017-12-19 |
| CN107489435B true CN107489435B (en) | 2023-08-18 |
Family
ID=60653254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710919693.8A Active CN107489435B (en) | 2017-09-30 | 2017-09-30 | Replaceable inflatable water stop for mine tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107489435B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108457668B (en) * | 2018-03-26 | 2019-10-18 | 华能西藏雅鲁藏布江水电开发投资有限公司 | A kind of double-shielded TBM joint liner supporting structure and its construction method |
| CN108547327B (en) * | 2018-03-30 | 2020-05-26 | 中国二十冶集团有限公司 | Waterproof construction method for prefabricated pipe gallery joints |
| CN109595413A (en) * | 2018-12-25 | 2019-04-09 | 中铁十七局集团有限公司 | A kind of adaptive detectable pipe joint waterproof construction |
| CN109595412A (en) * | 2018-12-25 | 2019-04-09 | 中铁十七局集团有限公司 | A kind of adaptive replaceable pipe joint waterproof construction |
| CN109505634B (en) * | 2019-01-28 | 2023-10-17 | 山东科技大学 | Emergency type anti-seepage water-air bag device in tunnel and application method thereof |
| CN109958146A (en) * | 2019-04-17 | 2019-07-02 | 中国铁路设计集团有限公司 | A kind of assembled underground structure prefabricated components seam crossing hermetic seal bar capsule |
| CN112796798A (en) * | 2021-01-18 | 2021-05-14 | 上海市城市建设设计研究总院（集团）有限公司 | Intelligent monitoring compensation inflation water-stop device for shield segment space and construction method thereof |
| CN113431608B (en) * | 2021-06-30 | 2021-11-26 | 中国铁路设计集团有限公司 | Prefabricated assembly type structure joint water stop strip bag structure and contact stress compensation method |
| CN114165164B (en) * | 2021-12-13 | 2023-03-14 | 中南大学 | Grooving drill bit and construction method of waterproof structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002129885A (en) * | 2000-10-25 | 2002-05-09 | Nippon Dentsu Co Ltd | Water cutoff structure of entrance part for use in acemole construction method |
| CN204059404U (en) * | 2014-10-17 | 2014-12-31 | 株洲时代新材料科技股份有限公司 | A kind of type inflatable GINA rubber fastening band |
| CN105064412A (en) * | 2015-07-30 | 2015-11-18 | 中铁第四勘察设计院集团有限公司 | Air bag type sealing structure for deformation joint of open trench tunnel |
| CN106150527A (en) * | 2015-03-24 | 2016-11-23 | 中铁隆工程集团有限公司 | Containing middle buried water stop tunnel double-lining chassis air bag mould end blocking method |
| CN207297041U (en) * | 2017-09-30 | 2018-05-01 | 济南市市政工程设计研究院（集团）有限责任公司 | A kind of changeable type inflatable waterstop for Tunneling by mining method |
-
2017
- 2017-09-30 CN CN201710919693.8A patent/CN107489435B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002129885A (en) * | 2000-10-25 | 2002-05-09 | Nippon Dentsu Co Ltd | Water cutoff structure of entrance part for use in acemole construction method |
| CN204059404U (en) * | 2014-10-17 | 2014-12-31 | 株洲时代新材料科技股份有限公司 | A kind of type inflatable GINA rubber fastening band |
| CN106150527A (en) * | 2015-03-24 | 2016-11-23 | 中铁隆工程集团有限公司 | Containing middle buried water stop tunnel double-lining chassis air bag mould end blocking method |
| CN105064412A (en) * | 2015-07-30 | 2015-11-18 | 中铁第四勘察设计院集团有限公司 | Air bag type sealing structure for deformation joint of open trench tunnel |
| CN207297041U (en) * | 2017-09-30 | 2018-05-01 | 济南市市政工程设计研究院（集团）有限责任公司 | A kind of changeable type inflatable waterstop for Tunneling by mining method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107489435A (en) | 2017-12-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107489435B (en) | Replaceable inflatable water stop for mine tunnel | |
| CN109505634B (en) | Emergency type anti-seepage water-air bag device in tunnel and application method thereof | |
| CN110645440A (en) | Trenchless repairing device and method for large-diameter concrete drain pipe disjointing | |
| CN107762532A (en) | Tunnel vault band mould grouting construction method | |
| CN102817382B (en) | The repairerment construction method of basement deformation joint seepage | |
| AU2013357138A1 (en) | Rock anchor bolt | |
| CN104458532B (en) | Device and method for testing water permeability resistance of concrete joint under action of controllable lateral restriction | |
| CN207297041U (en) | A kind of changeable type inflatable waterstop for Tunneling by mining method | |
| CN101625061B (en) | Pipelining emergent repairing method of prestressing steel cylinder concrete pipe | |
| CN109440951B (en) | Waterproof structure for joint of new and old concrete structures and construction process | |
| CN106150527A (en) | Containing middle buried water stop tunnel double-lining chassis air bag mould end blocking method | |
| CN111926841A (en) | Dewatering well water-carrying plugging structure and construction method thereof | |
| CN104631498B (en) | A kind of interchangeable enhancement type immersed tube tunnel water proofing joint | |
| CN112081595A (en) | Shield construction method, and waterproof and monitoring method for shield construction | |
| CN104404919B (en) | Dam foundation corridor and bank slope bedrock connecting structure | |
| CN106436771B (en) | A kind of tunnel, city piping lane leakage expansion joint method for repairing and mending and expansion gap device | |
| CN111997633A (en) | Construction method for replacing shield tail sealing brush of shield tunneling machine | |
| CN107816041B (en) | Non-dumping hole-forming prestressed anchor rod, anchor hole leakage-proof structure and construction method thereof | |
| CN110778333A (en) | Tunnel leakage repairing method | |
| CN215258170U (en) | Water stop ring with rubber ring air bag | |
| CN105672373B (en) | Immersed tube tunnel watertight door leakage detection apparatus | |
| CN208830336U (en) | A kind of reserved plugging device of deep foundation pit precipitation pipe well basement structure bottom plate | |
| CN112761682A (en) | Water stop ring with split hinge rubber ring | |
| CN201462321U (en) | Emergency repair structure of pipeline of prestressed concrete cylinder pipe (PCCP) | |
| CN111794776A (en) | Induced joint structure of water delivery tunnel concrete lining |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |