CN111894610B - Double-mode heading machine and shield body sealing structure thereof - Google Patents
Double-mode heading machine and shield body sealing structure thereof Download PDFInfo
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- CN111894610B CN111894610B CN202010796413.0A CN202010796413A CN111894610B CN 111894610 B CN111894610 B CN 111894610B CN 202010796413 A CN202010796413 A CN 202010796413A CN 111894610 B CN111894610 B CN 111894610B
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- 238000007789 sealing Methods 0.000 title claims abstract description 79
- 239000002002 slurry Substances 0.000 claims abstract description 43
- 239000003566 sealing material Substances 0.000 claims abstract description 30
- 239000004519 grease Substances 0.000 claims description 11
- 238000009412 basement excavation Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000002893 slag Substances 0.000 abstract description 12
- 230000005641 tunneling Effects 0.000 abstract description 6
- 239000012634 fragment Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract 1
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 17
- 208000032825 Ring chromosome 2 syndrome Diseases 0.000 description 14
- 239000011440 grout Substances 0.000 description 8
- 208000035397 Ring chromosome 7 syndrome Diseases 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229920001875 Ebonite Polymers 0.000 description 1
- 208000032827 Ring chromosome 9 syndrome Diseases 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- -1 light Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D9/0635—Tail sealing means, e.g. used as end shuttering
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D9/087—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 with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
-
- 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
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)
- Lining And Supports For Tunnels (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a shield body sealing structure which comprises a plurality of sealing rings, a slurry stopping ring plate, a shield tail brush and a sealing material layer, wherein the sealing rings are circumferentially sleeved at the front end of the outer wall of a front shield and tightly abut against the inner wall of a tunnel, the slurry stopping ring plate is circumferentially sleeved at the middle end of the outer wall of the front shield and tightly abut against the inner wall of the tunnel, the shield tail brush is circumferentially sleeved at the rear end of the outer wall of the front shield and tightly abut against the inner wall of the tunnel, and the sealing material layer is filled between the slurry stopping ring plate and the shield tail brush. According to the shield body sealing structure provided by the invention, the gap space between the outer wall of the front shield and the inner wall of the tunnel is sealed and blocked sequentially by the sealing ring, the slurry stopping ring plate, the shield tail brush and the sealing material layer, so that large slurry and slurry fragments can be effectively prevented from leaking to machine body equipment from the front shield, the shield body of the double-mode tunneling machine in a TBM (tunnel boring machine) working mode is sealed, the pressure loss of slurry discharge is prevented, and the smooth slag discharge is ensured. The invention also discloses a dual-mode heading machine which has the beneficial effects.
Description
Technical Field
The invention relates to the technical field of heading machines, in particular to a shield body sealing structure. The invention also relates to a dual-mode heading machine.
Background
With the development of the Chinese machinery industry, more and more mechanical devices are widely used.
In the technical field of Tunnel excavation, various large-scale engineering machines such as Tunnel Boring Machines (TBMs) and the like are often required to be used, parallel continuous operation of construction procedures such as excavation, support, slag tapping and the like can be completed, the equipment is factory assembly line Tunnel construction equipment integrating systems such as machine, electricity, liquid, light, gas and the like, has the advantages of high excavation speed, environmental protection and high comprehensive benefit, and can realize the construction of a long Tunnel deeply buried in complex geographical landforms which is difficult to realize by a traditional drilling and blasting method.
The traditional heading machine generally has only a single working mode and is difficult to deal with complex working conditions of multiple geological alternation. In order to solve the problem, the double-mode tunneling machine is developed along with the trend, and compared with a single-mode tunneling machine, the double-mode tunneling machine has two working modes, namely a pipe jacking mode and a TBM mode. The TBM mode is mainly suitable for hard rock strata with strong self-stability, and the pipe jacking mode is mainly suitable for short-distance tunnels.
In order to meet the requirement of complicated geology for tunneling long-distance tunnels, particularly small-section tunnels, the slurry-water-balance slag discharging mode is suitable for being adopted in the arrangement space of a belt conveyor. When the double-mode heading machine works in a pipe jacking mode, a zone with poor stability can be supported through pipe joints, an external portal sealing device can be arranged when mud water is balanced to remove slag, a certain mud pressure is maintained in an excavation bin, mud is prevented from flowing into the rear, and normal slag removal of equipment is guaranteed. When the double-mode heading machine works in a TBM mode, the traditional TBM heading machine usually adopts a slag tapping mode of a belt conveyor, and the slag tapping mode has no sealing problem, so that the traditional TBM heading machine is generally designed in an open structure. But to adopting the balanced TBM and the pipe jacking bimodulus entry driving machine of slagging tap of muddy water, traditional belt feeder mode of slagging tap can't be suitable for, and does not have the sealing device who specially aims at the shield among the prior art yet. If a shield body sealing measure is not adopted, the slurry flows into the rear part under the action of pressure due to large slurry fluidity, and the problems of slurry discharge pressure loss and difficult slag discharging are caused.
Therefore, how to realize shield sealing of the double-mode heading machine in a TBM working mode, prevent pressure loss of slurry discharge and ensure smooth slag discharge is a technical problem faced by technical personnel in the field.
Disclosure of Invention
The invention aims to provide a shield body sealing structure which can seal a shield body of a double-mode heading machine in a TBM (tunnel boring machine) working mode, prevent pressure loss of slurry discharge and ensure smooth slag discharge. Another object of the present invention is to provide a dual mode heading machine.
In order to solve the technical problem, the invention provides a shield body sealing structure which comprises a plurality of sealing rings, a slurry stopping ring plate, a shield tail brush and a sealing material layer, wherein the sealing rings are circumferentially sleeved at the front end of the outer wall of a front shield and tightly abut against the inner wall of a tunnel, the slurry stopping ring plate is circumferentially sleeved at the middle end of the outer wall of the front shield and tightly abut against the inner wall of the tunnel, the shield tail brush is circumferentially sleeved at the rear end of the outer wall of the front shield and tightly abut against the inner wall of the tunnel, and the sealing material layer is filled between the slurry stopping ring plate and the shield tail brush.
Preferably, the slurry stopping device further comprises an outer sleeve which is sleeved on the outer surface of the front shield and keeps close contact with the outer surface of the front shield, and the sealing ring, the slurry stopping ring plate, the shield tail brush and the sealing material layer are all arranged on the outer wall of the outer sleeve.
Preferably, a backing ring for adjusting the distance between the outer sleeve and the inner wall of the tunnel is arranged between the inner wall of the outer sleeve and the outer wall of the anterior shield.
Preferably, one end of the tail brush is connected to the outer surface of the backing ring.
Preferably, a feeding hole which is communicated with a material receiving pipe preset on the shield body and used for introducing a sealing material is formed in an area, corresponding to the sealing material layer, on the rear end of the outer wall of the outer-layer sleeve.
Preferably, the sealing material layer is specifically a sealing grease layer, and the slurry stopping ring plate and the surface of the shield tail brush are both provided with oil film layers for preventing grease leakage.
Preferably, clamping rings which are sleeved on the outer wall of the outer-layer sleeve and used for clamping the corresponding sealing rings are arranged on two axial sides of each sealing ring.
Preferably, each sealing ring is a polyurethane ring, and each clamping ring is a steel ring.
Preferably, the sealing ring is uniformly distributed on the outer wall of the outer sleeve 2-4 times along the axial direction.
The invention also provides a double-mode heading machine which comprises a front shield and a shield body sealing structure arranged on the front shield, wherein the shield body sealing structure is specifically any one of the shield body sealing structures.
The shield body sealing structure provided by the invention mainly comprises a sealing ring, a grout stopping ring plate, a shield tail brush and a sealing material layer. The sealing ring is sleeved at the front end of the outer wall of the front shield along the circumferential direction of the front shield and is tightly abutted to the inner wall of the tunnel, and the sealing ring is mainly used for sealing a gap between the front end of the front shield and the inner wall of the tunnel, so that most of slurry is prevented from leaking to the rear end of the shield body from the gap, and the slurry discharge pressure at the excavation tunnel face is prevented from leaking. The slurry stopping ring plate is sleeved at the middle end of the outer wall of the front shield along the circumferential direction of the front shield, is tightly abutted against the inside of the tunnel, and is mainly used for intercepting small slurry fragments leaked from the sealing ring. The shield tail brush is sleeved at the rear end of the outer wall of the front shield along the circumferential direction of the front shield and is tightly abutted with the inside of the tunnel, and the function of the shield tail brush is the same as that of the grout stopping ring plate. The sealing material layer is filled in a gap space between the slurry stopping ring plate and the shield tail brush and is mainly used for sealing the gap and preventing slurry fragments from leaking to the tail end of the shield body. Therefore, the shield body sealing structure provided by the invention can be used for sealing and blocking a gap space between the outer wall of the front shield and the inner wall of a tunnel sequentially through the sealing ring, the slurry stopping ring plate, the shield tail brush and the sealing material layer, effectively preventing large slurry and slurry fragments from leaking to machine body equipment from the front shield, realizing shield body sealing of the dual-mode tunneling machine in a TBM (tunnel boring machine) working mode, preventing slurry discharge pressure loss and ensuring smooth slag discharge.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
Fig. 2 is a partial structure diagram of the anterior shield shown in fig. 1.
Fig. 3 is a partial structural view of the rear end of the anterior shield shown in fig. 1.
Fig. 4 is a schematic overall structure diagram of another embodiment of the present invention.
Wherein, in fig. 1-4:
the shield comprises a front shield-1, a sealing ring-2, a grout stopping ring plate-3, a shield tail brush-4, a sealing material layer-5, an outer layer sleeve-6, a backing ring-7, a material receiving pipe-8 and a clamping ring-9;
and a feed inlet-61.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic overall structure diagram of an embodiment of the present invention.
In a specific embodiment provided by the invention, the shield body sealing structure mainly comprises a sealing ring 2, a grout stopping ring plate 3, a shield tail brush 4 and a sealing material layer 5.
The sealing ring 2 is sleeved at the front end of the outer wall of the front shield 1 along the circumferential direction of the front shield, and is tightly abutted to the inner wall of the tunnel, and the sealing ring is mainly used for sealing a gap between the front end of the front shield 1 and the inner wall of the tunnel, so that most of slurry is prevented from leaking to the rear end of the shield body from the gap, and the slurry discharge pressure at the excavation tunnel face is prevented from leaking.
The slurry stopping ring plate 3 is sleeved at the middle end of the outer wall of the shield 1 along the circumferential direction of the shield, is tightly abutted with the inside of the tunnel, and is mainly used for intercepting a small part of slurry fragments leaked from the sealing ring 2.
The shield tail brush 4 is sleeved at the rear end of the outer wall of the front shield 1 along the circumferential direction of the front shield and is tightly abutted with the inside of the tunnel, and the function of the shield tail brush is the same as that of the grout stopping annular plate 3.
The sealing material layer 5 is filled in the gap space between the slurry stopping ring plate 3 and the shield tail brush 4 and is mainly used for sealing the gap and preventing slurry debris from leaking to the tail end of the shield body.
So, the shield body seal structure that this embodiment provided loops through sealing ring 2, ends thick liquid crown plate 3, shield tail brush 4 and sealing material layer 5 and seals, blocks up the gap space between anterior shield 1 outer wall and the tunnel inner wall, can prevent effectively that bold mud and mud piece from leaking to organism equipment from anterior shield 1, realizes sealed the shield body of double mode entry driving machine under TBM mode of operation, prevents to arrange thick liquid loss of pressure, guarantees to slag tap smoothly.
As shown in fig. 2, fig. 2 is a partial structural schematic diagram of the front end of the anterior shield 1 shown in fig. 1.
In this embodiment, the dual mode excavator has a device retraction function and the outer casing 6 is sleeved on the outer surface of the front shield 1, so that when the device is retracted, the outer casing 6 is left in place, and the front shield 1 and the rest of the device are retracted inside the outer casing 6. Specifically, the outer casing 6 may be a steel casing, and the inner diameter of the steel casing is equal to or slightly smaller than the outer diameter of the anterior shield 1, and the steel casing can be tightly sleeved on the outer wall of the outer shield. Meanwhile, the axial length of the outer-layer sleeve 6 can be equivalent to that of the anterior shield 1, and correspondingly, the sealing ring 2, the grout stopping ring plate 3, the shield tail brush 4 and the sealing material layer 5 can be arranged on the outer wall of the outer-layer sleeve 6.
Furthermore, considering that the thickness of the outer sleeve 6 affects the gap space between the front end outer wall and the tunnel inner wall, in order to facilitate the setting of the sealing ring 2, the grout stop ring plate 3, the shield tail brush 4 and the sealing material layer 5 in the gap space and the material size adjustment and processing, a backing ring 7 is additionally arranged between the inner wall of the outer sleeve 6 and the outer wall of the front shield 1. Specifically, the backing ring 7 has a preset thickness, and the thickness of the backing ring 7 can be adjusted by replacing the backing rings 7 with different specifications, so that the distance between the outer wall of the outer casing 6 and the inner wall of the tunnel can be adjusted through the backing rings 7 with different thicknesses, and the adjustment of the gap space is realized.
As shown in fig. 3, fig. 3 is a partial structural diagram of the rear end of the anterior shield 1 shown in fig. 1.
In addition, the shield tail brush 4 is located at the rear end of the front shield 1 or the outer sleeve 6, in order to facilitate the installation of the shield tail brush 4, in the embodiment, the axial length of the backing ring 7 is greater than that of the outer sleeve 6, and the tail part of the backing ring 7 extends out of the end surface of the outer sleeve 6, so that one end of the shield tail brush 4 can be connected to the outer surface of the backing ring 7, for example, the threaded connection can be realized through welding or a fastener.
In a preferred embodiment with respect to the sealing material layer 5, the sealing material layer 5 may in particular be a layer of sealing grease, whereby the interstitial spaces are blocked by a dense material of high density. Considering that the sealing grease layer is gradually reduced due to factors such as evaporation when the sealing grease layer is used for a long time, in order to supplement the sealing grease layer in time and ensure the sealing performance of the sealing grease layer, the feeding hole 61 is formed in the outer-layer sleeve 6 so as to be communicated with the material receiving pipe 8 preset on the shield body. Specifically, the material receiving pipe 8 can introduce the sealing material from an external device and introduce the sealing material into the space where the sealing material layer 5 is located through communication with the feed opening 61.
Further, in order to reduce the evaporation rate or the water flow rate of the sealing grease layer and prevent the sealing grease layer from leaking from the position of the slurry stop ring plate 3 or the shield tail brush 4, the present embodiment provides an oil film layer on the surfaces of the slurry stop ring plate 3 and the shield tail brush 4, so that the sealing material is prevented from being lost by the oil film function of the oil film layer.
In order to improve the installation stability of the sealing ring 2 on the outer casing 6 and the sealing performance of the sealing ring to the gap space, the clamping rings 9 are sleeved on the two axial sides of each sealing ring 2 in the embodiment. Specifically, the clamping ring 9 is sleeved on the outer wall of the outer-layer sleeve 6 along the circumferential direction, and the side face of the clamping ring 9 is tightly pressed with the side face of the sealing ring 2, so that the middle sealing ring 2 is tightly clamped through the clamping rings 9 on the two sides, and the sealing performance between the sealing ring 2 and the outer wall of the outer-layer sleeve 6 and the inner wall of the tunnel is improved.
Generally, the sealing ring 2 may be a polyurethane ring or a hard rubber ring, and the clamping ring 9 may be a steel ring or an aluminum alloy ring. Moreover, the sealing rings 2 can be arranged on the outer-layer sleeve 6 for 2-4 times, and meanwhile, the sealing rings 2 can be uniformly distributed along the axial direction of the outer-layer sleeve 6.
As shown in fig. 4, fig. 4 is a schematic overall structure diagram of another embodiment provided by the present invention.
In another embodiment provided by the invention, the outer sleeve 6 can be omitted on the outer wall of the anterior shield 1, and the sealing ring 2, the grout stopping ring plate 3, the shield tail brush 4 and the sealing material layer 5 can be directly arranged on the outer wall surface of the anterior shield 1.
The embodiment also provides a dual-mode heading machine, which mainly comprises an anterior shield and a shield body sealing structure arranged on the anterior shield, wherein the specific contents of the shield body sealing structure are the same as those of the related contents, and are not described again here.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (2)
1. A shield body sealing structure is characterized by comprising a plurality of sealing rings (2) which are circumferentially sleeved at the front end of the outer wall of a front shield (1) and tightly abutted with the inner wall of a tunnel to prevent slurry from leaking to the rear end of the shield body from gaps and ensure that the slurry discharge pressure at the excavation tunnel face is not leaked, a slurry stopping ring plate (3) circumferentially sleeved at the middle end of the outer wall of the front shield (1) and tightly abutted with the inner wall of the tunnel, a shield tail brush (4) circumferentially sleeved at the rear end of the outer wall of the front shield (1) and tightly abutted with the inner wall of the tunnel, and a sealing material layer (5) filled between the slurry stopping ring plate (3) and the shield tail brush (4);
the slurry stopping device is characterized by further comprising an outer-layer sleeve (6) which is sleeved on the outer surface of the front shield (1) and keeps close contact with the outer surface, and the sealing ring (2), the slurry stopping ring plate (3), the shield tail brush (4) and the sealing material layer (5) are all arranged on the outer wall of the outer-layer sleeve (6);
a backing ring (7) used for adjusting the distance between the outer casing (6) and the inner wall of the tunnel is arranged between the inner wall of the outer casing (6) and the outer wall of the anterior shield (1);
one end of the shield tail brush (4) is connected to the outer surface of the backing ring (7);
a feeding hole (61) which is communicated with a material receiving pipe (8) preset on the front shield (1) and used for introducing sealing materials is formed in an area, corresponding to the sealing material layer (5), on the rear end of the outer wall of the outer-layer sleeve (6);
the sealing material layer (5) is a sealing grease layer, and oil film layers for preventing grease leakage are arranged on the surfaces of the slurry stopping ring plate (3) and the shield tail brush (4);
clamping rings (9) which are sleeved on the outer wall of the outer-layer sleeve (6) and used for clamping the corresponding sealing rings (2) are arranged at two axial sides of each sealing ring (2);
each sealing ring (2) is a polyurethane ring, and each clamping ring (9) is a steel ring;
2-4 sealing rings are uniformly distributed on the outer wall of the outer sleeve (6) along the axial direction of the sealing rings (2).
2. A dual-mode heading machine comprising a front shield (1) and a shield seal structure provided on said front shield (1), characterized in that said shield seal structure is in particular the shield seal structure of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010796413.0A CN111894610B (en) | 2020-08-10 | 2020-08-10 | Double-mode heading machine and shield body sealing structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010796413.0A CN111894610B (en) | 2020-08-10 | 2020-08-10 | Double-mode heading machine and shield body sealing structure thereof |
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| Publication Number | Publication Date |
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| CN111894610A CN111894610A (en) | 2020-11-06 |
| CN111894610B true CN111894610B (en) | 2022-09-09 |
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| CN202010796413.0A Active CN111894610B (en) | 2020-08-10 | 2020-08-10 | Double-mode heading machine and shield body sealing structure thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943276B (en) * | 2021-02-08 | 2022-04-29 | 中国铁建重工集团股份有限公司 | Dual-mode heading machine |
| CN113605906B (en) * | 2021-09-03 | 2022-04-01 | 浙江鼎昊新能源设备股份有限公司 | Shield body of shield machine and tunneling method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203476340U (en) * | 2013-08-05 | 2014-03-12 | 中铁十二局集团有限公司 | Portal sealing device of slurry shield |
| CN104806258B (en) * | 2015-04-30 | 2017-01-04 | 中铁工程装备集团有限公司 | A kind of can realize muddy water, the shield machine of soil pressure patten transformation |
| CN106968679B (en) * | 2017-03-20 | 2019-02-15 | 中铁十四局集团有限公司 | A kind of high hydraulic pressure tail sealing emergency system |
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| CN111894610A (en) | 2020-11-06 |
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