CN107762522B - Pipe ring butt joint auxiliary device and method for replacing shield tail brush - Google Patents
Pipe ring butt joint auxiliary device and method for replacing shield tail brush Download PDFInfo
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- CN107762522B CN107762522B CN201711071345.6A CN201711071345A CN107762522B CN 107762522 B CN107762522 B CN 107762522B CN 201711071345 A CN201711071345 A CN 201711071345A CN 107762522 B CN107762522 B CN 107762522B
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- pipe ring
- shield
- pipe
- shield tail
- guide
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- 210000001503 joint Anatomy 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000010276 construction Methods 0.000 claims description 10
- 238000009412 basement excavation Methods 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 5
- 230000005641 tunneling Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000004519 grease Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- E21D9/0607—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. 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
- E21D9/0635—Tail sealing means, e.g. used as end shuttering
-
- 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
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- 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 relates to a pipe ring butt joint auxiliary device and a method for replacing a shield tail brush, and belongs to the field of shield tunnel engineering. The device comprises a plurality of guide units arranged between the butt joint end surfaces of two pipe rings and a plurality of positioning units arranged on the end surface of one pipe ring, wherein a shield tail brush is arranged on the outer side of the pipe ring provided with the positioning units, the guide units comprise guide bodies, and one end of each guide body is provided with a guide inclined surface; the positioning unit comprises a first surface, a second surface and a third surface which are sequentially connected, the first surface and the third surface are perpendicular to the second surface, positioning bolt connecting portions are arranged at one ends of the first surfaces, positioning bolt connecting holes are formed in the second surfaces, and positioning grooves matched with the guiding units in shape are formed in the third surfaces. The invention solves the problem of butt joint of the secondary assembled pipe rings, and can completely replace the shield tail brush.
Description
Technical Field
The invention relates to a butt joint auxiliary device, in particular to a pipe ring butt joint auxiliary device, and also relates to a method for replacing a shield tail brush by using the device, belonging to the field of shield tunnel engineering.
Background
With the development of urban construction in China, the shield construction method is widely applied to subways and river-crossing and sea-crossing tunnels, so that the problems encountered in shield construction are more and more prominent, and replacement of a shield tail brush and secondary assembly and butt joint of a pipe ring are difficulties in shield construction.
The shield machine is continuously propelled for a long distance or the shield machine is subjected to quality control such as manual oiling and grease smearing quality, first grease filling quantity, synchronous grouting pressure control, synchronous grease injection control, namely shield tail clearance and other factors which are not in place or are improper in operation, so that grouting slurry enters a cavity between two shield tail brushes after entering a wall, and abnormal abrasion of the tail brushes is caused after solidification, so that the shield tail brushes are invalid.
In order to ensure the smooth and safe progress of the shield propelling work, the damaged shield tail brush must be replaced. The existing tail brush replacement method is to fix the segments at the rear part of the tail brush, replace the tail brush after the front pipe ring is removed, and then reassemble the front pipe ring after the tail brush is replaced. The method can only replace the front 2 or 3 shield tail brushes in the shield shell, cannot replace all the shield tail brushes, has complex replacement process and long construction time, and also needs to set a specific front pipe ring.
Disclosure of Invention
In order to solve the technical problems, the first object of the invention is to provide a pipe ring butt joint auxiliary device, and the second object is to utilize the method for replacing the shield tail brush of the device to push out all the first pipe rings in the shield shell, then replace the shield tail brush, assemble the second pipe rings in the shield shell after the replacement of the shield tail brush is completed, push out the second pipe rings, butt joint with the first pipe rings, and ensure the smooth progress and safety of the shield propelling work. The invention adopts the following technical scheme:
the pipe ring butt joint auxiliary device comprises a plurality of guide units arranged between butt joint end surfaces of two pipe rings and a plurality of positioning units arranged on the end surface of one pipe ring, wherein a shield tail brush is arranged on the outer side of the pipe ring provided with the positioning units, the guide units comprise guide bodies, and one end of each guide body is provided with a guide inclined plane; the positioning unit comprises a first surface, a second surface and a third surface which are sequentially connected, the first surface and the third surface are perpendicular to the second surface, positioning bolt connecting portions are arranged at one ends of the first surfaces, positioning bolt connecting holes are formed in the second surfaces, and positioning grooves matched with the guiding units in shape are formed in the third surfaces.
Further, the guide units and the positioning units are distributed at the middle part and the bottom part of the two ends of the pipe ring, and an included angle between the adjacent guide units and the positioning units at the middle part and the bottom part and the center of the pipe ring is 22.5 degrees.
Further, the guide body of the guide unit has a larger cross section at one end than at the other end, and the guide body has a constant cross section from one end to a first length distance, and gradually converges from the top and both sides from the first length distance to the other end.
Further, the other end of the guiding body is provided with a guiding plane, and the guiding plane is connected with the guiding inclined plane.
Further, a shield tail brush receiving part is also arranged on the guide inclined plane.
Further, the positioning bolt connecting part forms a certain included angle with the first surface, and the length of the third surface is smaller than that of the first surface.
Further, the height of one end of the guiding unit is approximately equal to the distance from the outer cambered surface of the pipe ring to the excavation surface, the height of the other end of the guiding unit is approximately equal to the thickness of the shield shell, and the other end of the guiding unit is arranged facing the shield tail brush.
The method for replacing the shield tail brush by using the pipe ring butt joint auxiliary device comprises the following steps of:
step (1), adjusting the posture of a shield machine and the gap between the tail of the shield in the shield tunneling process, and assembling a first pipe ring in a shield shell;
step (2), grouting water-proof slurry through grouting holes in the duct piece at the rear part of the shield tail and grouting holes at the periphery of the shield body;
step (3), pushing all the first pipe rings in the shield shell out of the shield shell by using a pushing cylinder and an auxiliary pushing rod until the distance between the end parts of the first pipe rings and the shield tail is 800-1000 mm, and stopping pushing;
step (4), checking and replacing all shield tail brushes positioned on the outer side of the first pipe ring, and simultaneously installing a guide device according to the positions of the connecting bolt holes of the first pipe ring, wherein the guide device is arranged along the excavation surface, one end of the guide device is abutted against the first pipe ring, and the other end of the guide device faces the shield tail brushes;
after the replacement and installation of the shield tail brush are finished, smearing oiling by the hand of the shield tail brush, and re-assembling the second pipe ring in the pipe splicing area of the shield shell by using a pipe splicing machine of the shield machine after the hand oiling is proved to be qualified; after the second pipe ring is assembled into a ring, slowly pushing out the second pipe ring backwards by using an assembly mode of a shield machine pushing cylinder, stopping pushing out after about 500-700 mm, and then assembling a third pipe ring;
step (6), after the third pipe ring is assembled, slowly pushing out the second pipe ring and the third pipe ring by using an assembly mode of a pushing cylinder of the shield machine until the end face of the second pipe ring is pushed out by 80-120 mm of the last shield tail brush;
step (7), installing a positioning device on the end face of the second pipe ring according to the end face shape of the second pipe ring and the positions of the bolt holes;
step (8), after all the devices to be positioned are installed and accepted, starting a pushing oil cylinder to continuously push out the second pipe ring, stopping pushing when the distance between the end face of the second pipe ring and the end face of the first pipe ring reaches 60-80 mm, and dismantling the guide device;
step (9), after the guide device is removed, continuously pushing out the second pipe ring until the end face of the second pipe ring is in butt joint with the end face of the first pipe ring, the first pipe ring corresponds to the bolt hole of the second pipe ring, and then installing a longitudinal connecting bolt;
and (10) completing the replacement of the shield tail brush and the whole work of butt joint of the pipe rings, and recovering the normal construction of the shield machine.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the guide device and the positioning device are arranged on the end face of the pipe ring, so that the accurate butt joint of the pipe ring is realized, the problem of butt joint of the secondarily assembled pipe ring after all pipe rings in the shield shell are pushed out and replaced with all shield tail brushes is solved, and all the shield tail brushes can be replaced.
The invention can be widely applied to shield construction in which the shield tail brush needs to be replaced after the seal of the shield tail brush fails in the shield tunneling process under various conditions. The method is particularly suitable for hollow pushing construction of the shield in a long-distance hard rock section mine method tunnel, the damage of the shield tail brush is serious, and the pipe rings in the shield shell are completely pushed out to replace the shield tail brush before the shield enters tunneling operation; in addition, the device is also suitable for replacing the shield tail brush in a low water pressure environment.
Drawings
FIG. 1 is a schematic view of a pipe ring docking aid of the present invention;
FIG. 2 is a schematic view of the structure in the direction C in FIG. 1;
FIG. 3 is a schematic view of the guiding device of the present invention;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a schematic view of the structure of the direction A in FIG. 3;
FIG. 6 is a schematic view of the structure in the direction B in FIG. 3;
FIG. 7 is a schematic view of the pipe ring docking aid of the present invention disposed on a pipe ring;
in fig. 8, (a) is a schematic diagram of assembly of a pipe ring in a shield shell and injection of water-proof slurry into a shield tail; (b) Pushing out a shield tail for a pipe ring in the shield shell, and installing a shield tail brush replacement and guide device; (c) Pushing out the shield shell after assembling the pipe ring and installing the guide device; (d) pushing out the tube ring for butt joint.
Detailed Description
The technical solutions of the present embodiment will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is apparent that the described embodiment is only a part of examples of the present invention, not all examples. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-7, the pipe ring butt joint auxiliary device of the embodiment comprises a plurality of guide units 5 arranged between butt joint end surfaces of a first pipe ring 1 and a second pipe ring 6 and a plurality of positioning units 8 arranged on the end surfaces of the second pipe ring 6, a shield tail brush 3 is arranged on the outer side of the second pipe ring 6, the guide units 5 comprise guide bodies, and one ends of the guide bodies are provided with guide inclined planes; the positioning unit 8 comprises a first surface 14, a second surface and a third surface 15 which are sequentially connected, the first surface 14 and the third surface 15 are perpendicular to the second surface, a connecting part 13 of a positioning bolt 11 is arranged at one end of the first surface 14, a positioning bolt connecting hole R16 is formed in the second surface, and a positioning groove matched with the guiding unit 5 in shape is formed in the third surface 15. The locating unit is 425cm in height, the length of the first surface 14 is 230cm, two ends of the middle of the second surface are converged inwards, the width of the first surface is smaller than that of the third surface, the locating groove of the third surface is trapezoid, the top edge is 200cm in length, the bottom edge is 250cm in length, and the guide unit 5 is in contact with the top edge. The connecting part 13 of the positioning bolt forms a certain included angle with the first surface 14, the connecting part 13 of the positioning bolt can be a steel plate lifting lug, the connecting bolt 12 processed by adopting a duct piece longitudinal bolt is fixed with the steel plate lifting lug 13 arranged at the hand hole position of the longitudinal connecting bolt, and the first surface 14 is welded with one end of the steel plate ear 13.
As shown in fig. 7, a plurality of guiding units and positioning units are distributed at the middle part and the bottom part of two ends of the pipe ring, 2 guiding units and positioning units are respectively arranged at two sides of the middle part, 3 guiding units and the bottom part are arranged at the bottom, and an included angle between the adjacent guiding units and positioning units at the middle part and the bottom and the center of the pipe ring is 22.5 degrees.
As shown in fig. 3-5, the cross section of one end of the guiding body of the guiding unit is larger than the cross section of the other end, and the cross section of the guiding body is unchanged from one end to the first length, the upper part is a guiding plane 5.1, the guiding plane is connected with a guiding inclined plane 5.2, and the cross section gradually converges from the top and two sides from the first length to the other end. The guide inclined plane 5.2 is also provided with a shield tail brush receiving part 5.3, the included angle between the shield tail brush receiving part 5.3 and the horizontal plane is the same as the included angle between the guide inclined plane 5.2 and the horizontal plane, and the shield tail brush receiving part 5.3 is in a plane with the height lower than that of the guide inclined plane 5.2.
The guide unit length l1=800 mm, one end height H2 is approximately equal to the distance from the pipe ring extrados to the excavation face, the other end height H1 is approximately equal to the shield shell thickness, the other end faces the shield tail brush, the horizontal length of the shield tail brush receiving portion 5.3 is L2, and the L2 is similar to the length of the shield tail brush. The guiding device 5 and the positioning device 8 are formed by welding steel plates.
As shown in fig. 1 and 8 (a) - (d), the method for replacing the tail brush by using the pipe ring butt joint auxiliary device of the present embodiment realizes the butt joint of the pipe ring by installing the guide device 5 and the guide device 8 at the end of the pipe ring. In the replacement process of the shield tail brush, a guide device is firstly arranged at the end part of the pipe ring, the guide device is arranged after the end face of the pipe ring which is assembled again in the shield shell is pushed out of the last shield tail brush, and the butt joint of the pipe ring is realized through the combined action of the guide device 5 and the positioning device 8. The method specifically comprises the following steps:
step (1), adjusting the posture and the tail clearance of a shield machine in the shield tunneling process, and assembling a first pipe ring 1 in a shield shell, wherein a bolt connecting hole 17 is reserved on the first pipe ring 1;
step (2), grouting water-proof slurry 4 through grouting holes in the duct piece at the rear part of the shield tail and grouting holes at the periphery of the shield body;
step (3), pushing all the first pipe rings 1 in the shield shell out of the shield shell by using the pushing cylinder 2 and the auxiliary push rod 9 until the distance between the end part of the first pipe ring 1 and the shield tail is about 800mm, and stopping pushing;
step (4), checking and replacing all shield tail brushes 3 positioned on the outer side of the first pipe ring 1, and simultaneously installing a guide device 5 according to the positions of the connecting bolt holes 17 of the first pipe ring 1, wherein the guide device 5 is arranged along the excavation surface, one end of the guide device is abutted against the first pipe ring 1, and the other end of the guide device faces the shield tail brushes 3;
after the replacement and installation of the shield tail brush 3 are finished, smearing oiling by the hand of the shield tail brush, and re-assembling the second pipe ring 6 in the pipe splicing area of the shield shell by using a pipe splicing machine of the shield machine after the hand oiling is proved to be qualified; after the second pipe ring 6 is assembled into a ring, the second pipe ring 6 is slowly pushed out backwards for about 600mm by utilizing an assembly mode of a shield machine pushing cylinder, then the pushing is stopped, and then a third pipe ring 7 is assembled;
after the third pipe ring 7 is assembled, slowly pushing out the second pipe ring 6 and the third pipe ring 7 by using an assembly mode of a pushing cylinder of the shield machine until the end face of the second pipe ring 6 pushes out the last shield tail brush by about 100mm, and stopping pushing out;
step (7), installing a positioning device 8 on the end face of the second pipe ring 6 according to the end face shape of the second pipe ring 6 and the positions of the bolt holes 11, and installing 7 guiding devices altogether, wherein the design and the installation positions of the guiding devices are shown in fig. 7;
step (8), after all the devices 8 to be positioned are installed and accepted, starting a pushing oil cylinder to continuously push out the second pipe ring 6, stopping pushing when the distance between the end face of the second pipe ring 6 and the end face of the first pipe ring 1 reaches 6-8 cm, and dismantling the guide device 8;
step (9), after the guide device 8 is removed, continuing to push out the second pipe ring 6 until the end face of the second pipe ring 6 is in butt joint with the end face of the first pipe ring 1, the first pipe ring 1 corresponds to the bolt hole 11 of the second pipe ring 6, and then installing a longitudinal connecting bolt;
and (10) completing the replacement of the shield tail brush and the whole work of butt joint of the pipe rings, and recovering the normal construction of the shield machine.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (7)
1. A method for replacing a shield tail brush of a pipe ring butt joint auxiliary device is characterized by comprising the following steps of: the pipe ring butt joint auxiliary device comprises a plurality of guide units arranged between the butt joint end surfaces of two pipe rings and a plurality of positioning units arranged on the end surface of one pipe ring, a shield tail brush is arranged on the outer side of the pipe ring provided with the positioning units, the guide units comprise guide bodies, and one end of each guide body is provided with a guide inclined plane; the positioning unit comprises a first surface, a second surface and a third surface which are sequentially connected, the first surface and the third surface are perpendicular to the second surface, one end of the first surface is provided with a positioning bolt connecting part, the second surface is provided with a positioning bolt connecting hole, and the third surface is provided with a positioning groove matched with the guiding unit in shape; the method comprises the following steps:
the method comprises the steps of (1) adjusting the posture and the tail clearance of a shield machine in the shield tunneling process, and assembling a first pipe ring in a shield shell;
step (2) grouting water-proof slurry through grouting holes in the duct piece at the rear part of the shield tail and grouting holes at the periphery of the shield body;
step (3), pushing all the first pipe rings in the shield shell out of the shield shell by using a pushing cylinder and an auxiliary pushing rod until the end parts of the first pipe rings are 800-1000 mm away from the shield tail, and stopping pushing;
step (4) checking and replacing all shield tail brushes positioned on the outer side of the first pipe ring, and simultaneously installing a guide device according to the positions of the connecting bolt holes of the first pipe ring, wherein the guide device is arranged along the excavation surface, one end of the guide device is abutted against the first pipe ring, and the other end of the guide device faces the shield tail brushes;
after the replacement and installation of the shield tail brush are finished, smearing oiling by the hand of the shield tail brush, and re-assembling the second pipe ring in the pipe splicing area of the shield shell by using a pipe splicing machine of the shield machine after the hand oiling is proved to be qualified; after the second pipe ring is assembled into a ring, slowly pushing out the second pipe ring backwards by using an assembly mode of a shield machine pushing cylinder, stopping pushing out after about 500-700 mm, and then assembling a third pipe ring;
after the third pipe ring is assembled, slowly pushing out the second pipe ring and the third pipe ring by utilizing an assembly mode of a pushing cylinder of the shield machine until the end face of the second pipe ring is pushed out by 80-120 mm of the last shield tail brush;
step (7), installing a positioning device on the end face of the second pipe ring according to the shape of the end face of the second pipe ring and the positions of the bolt holes;
after all the positioning devices are installed and accepted, starting a pushing oil cylinder to continuously push out the second pipe ring, stopping pushing when the distance between the end face of the second pipe ring and the end face of the first pipe ring reaches 60-80 mm, and dismantling the guiding device;
after the guide device is removed, continuing pushing out the second pipe ring until the end face of the second pipe ring is in butt joint with the end face of the first pipe ring, wherein the first pipe ring corresponds to the bolt hole of the second pipe ring, and then installing a longitudinal connecting bolt;
and (10) completing the replacement of the shield tail brush and the whole work of butt joint of the pipe rings, and recovering the normal construction of the shield machine.
2. The method according to claim 1, characterized in that: the guide units and the positioning units are distributed at the middle part and the bottom part of the two ends of the pipe ring, and an included angle between the adjacent guide units and the positioning units at the middle part and the bottom part and the center of the pipe ring is 22.5 degrees.
3. The method according to claim 1, characterized in that: the cross section of one end of the guiding body of the guiding unit is larger than the cross section of the other end, the distance from one end to the first length is constant, and the cross section gradually converges from the top and the two sides from the first length to the other end.
4. The method according to claim 1, characterized in that: the other end of the guiding body is provided with a guiding plane which is connected with the guiding inclined plane.
5. A method according to claim 3, characterized in that: the guide inclined plane is also provided with a shield tail brush receiving part, and the height of the shield tail brush receiving part is lower than that of the guide inclined plane.
6. The method according to claim 1, characterized in that: the positioning bolt connecting part forms a certain included angle with the first surface, and the length of the third surface is smaller than that of the first surface.
7. The method according to claim 1, characterized in that: the height of one end of the guiding unit is approximately equal to the distance from the outer arc surface of the pipe ring to the excavation surface, the height of the other end of the guiding unit is approximately equal to the thickness of the shield shell, and the other end of the guiding unit is arranged facing the shield tail brush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711071345.6A CN107762522B (en) | 2017-11-03 | 2017-11-03 | Pipe ring butt joint auxiliary device and method for replacing shield tail brush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711071345.6A CN107762522B (en) | 2017-11-03 | 2017-11-03 | Pipe ring butt joint auxiliary device and method for replacing shield tail brush |
Publications (2)
| Publication Number | Publication Date |
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| CN107762522A CN107762522A (en) | 2018-03-06 |
| CN107762522B true CN107762522B (en) | 2023-05-09 |
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| CN201711071345.6A Active CN107762522B (en) | 2017-11-03 | 2017-11-03 | Pipe ring butt joint auxiliary device and method for replacing shield tail brush |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108643933A (en) * | 2018-04-27 | 2018-10-12 | 中铁十二局集团有限公司 | Shield receives portal reinforcement means |
| CN108571322B (en) * | 2018-05-16 | 2023-08-15 | 华东交通大学 | Shield tunneling machine tail brush device and replacement method thereof |
| CN111764915B (en) * | 2020-07-02 | 2022-07-19 | 中铁十四局集团有限公司 | Installation method of shield tail of shield machine |
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| JPH10131683A (en) * | 1996-11-05 | 1998-05-19 | Kajima Corp | Emergency water impervious device for tail seal of shield machine |
| JP2002021486A (en) * | 2000-07-05 | 2002-01-23 | Taisei Corp | Tail bush replacing device and replacing method for shield machine |
| CN101251015A (en) * | 2008-04-02 | 2008-08-27 | 上海隧道工程股份有限公司 | Construction method for exchanging shield ventral brush |
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| CN107762522A (en) | 2018-03-06 |
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