CN113882867A - Disassembly station-crossing shield system for closed station and disassembly station-crossing construction method - Google Patents
Disassembly station-crossing shield system for closed station and disassembly station-crossing construction method Download PDFInfo
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- CN113882867A CN113882867A CN202111156888.4A CN202111156888A CN113882867A CN 113882867 A CN113882867 A CN 113882867A CN 202111156888 A CN202111156888 A CN 202111156888A CN 113882867 A CN113882867 A CN 113882867A
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- 238000011084 recovery Methods 0.000 claims abstract description 12
- 230000002441 reversible effect Effects 0.000 claims abstract description 4
- 230000000903 blocking effect Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 230000002452 interceptive effect Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims 1
- 230000005641 tunneling Effects 0.000 abstract description 2
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- 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
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- 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
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- 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
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
- E21D9/124—Helical conveying means therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/006—Equipment transport systems
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Abstract
The invention belongs to the technical field of shield tunneling machines, and particularly relates to a disassembly station-crossing shield system for a closed station and a disassembly station-crossing construction method. The shield system comprises a front shield, a middle shield, a tail shield, an equipment bridge and a trailer outer side walking board, wherein the front shield comprises a front shield top block, a front shield left block, a front shield bottom block and a front shield right block which are sequentially connected on the same plane; the middle shield is divided into two parts from front to back, namely a front middle shield block and a rear middle shield block; the tail shield is formed by connecting a tail shield top block and a tail shield bottom block on the same plane; the equipment bridge tie beams on the two sides of the equipment bridge are designed into detachable structures; the outer side walking platform of the trailer is of a reversible structure. The shield system for the disassembly and passing of the closed station and the construction method effectively improve the disassembly efficiency in the tunnel, reduce the risk of disassembly in the tunnel and reduce the later recovery cost of the shield machine; the purpose of closing the station inner cutter head and the shield body to pass through the station is achieved, and the purpose that the rear matching structure normally passes through the standard section side wall is achieved.
Description
Technical Field
The invention belongs to the technical field of shield tunneling machines, and particularly relates to a disassembly station-crossing shield system for a closed station and a disassembly station-crossing construction method.
Background
With the continuous development of modern cities and the continuous improvement of road traffic, subway tunnel construction projects using shield technology as a support have become a main way to solve a series of traffic problems caused by urbanization. When the shield is constructed at a special site of an existing ground building, the situation that the shield cannot be normally started or received can exist, and in order to solve the problems, split starting is usually adopted when the shield is started; and when receiving, adopting 'in-hole dismantling machine translation receiving'.
The existing more and more shield machines do not have the receiving condition of the complete machine of the station when receiving, all shield machine parts must be disassembled in the tunnel and transported in the tunnel, the tunnel internal disassembling efficiency can be effectively improved, the risk of the tunnel internal disassembling is reduced, and the later recovery cost of the shield machine is reduced by formulating a reasonable tunnel internal disassembling method of the shield machine in combination with the self characteristics of the shield machine and the space condition of the arrival position. The technology of in-tunnel dismantling has a mature technical scheme under the condition of receiving stations, but the research on the construction shield which has a tight construction period and needs to pass through the closed receiving stations below the normally operating high-speed railway station has no mature case.
Disclosure of Invention
In view of the problems in the prior art, the invention provides a disassembly and passing shield system for a closed station and a disassembly and passing construction method.
The technical scheme of the invention is as follows:
the invention aims to provide a shield system for disassembling and passing a station of a closed station, which comprises a front shield, a middle shield, a tail shield, an equipment bridge and a trailer outside walking platform, wherein the front shield, the middle shield, the tail shield and the equipment bridge are connected with the front shield; the anterior shield comprises an anterior shield top block, an anterior shield left block, an anterior shield bottom block and an anterior shield right block which are sequentially connected on the same plane and are connected into a whole by bolts;
the two middle shields are divided into a middle shield front block and a middle shield rear block from front to back; the front middle shield sub-block and the rear middle shield sub-block are respectively composed of four blocks, wherein the front middle shield sub-block comprises a front middle shield top block, a front middle shield right block, a front middle shield bottom block and a front middle shield left block which are sequentially in threaded connection on the same plane; the rear middle shield sub-block comprises a rear middle shield top block, a rear middle shield right block, a rear middle shield bottom block and a rear middle shield left block which are sequentially in threaded connection on the same plane;
the tail shield is formed by connecting a tail shield top block and a tail shield bottom block on the same plane through threads;
the equipment bridge tie beams on the two sides of the equipment bridge are designed to be detachable structures, the equipment bridge tie beams are detached when the shield machine starts, and the detached equipment bridge tie beams are assembled after the equipment bridge passes through the side wall;
the walking platform on the outer side of the trailer is of a reversible structure and specifically comprises a walking platform, a pin shaft and platform supporting legs, and the walking platform can turn horizontally and vertically on the platform supporting legs by taking the pin shaft as a center; when the shield machine starts, the traveling platform is turned over by 90 degrees, and the trailer turns over the traveling platform after passing through the side wall.
Further, the angle between the anterior shield top block and the anterior shield bottom block is 87 degrees, and the angle between the anterior shield left block and the anterior shield right block is 93 degrees. When the shield machine needs to be disassembled in a tunnel, the front shield can be disassembled through the pre-designed block positions, each block is transported respectively, and is reassembled after passing through the side wall, so that the transportation cost and the recovery cost are reduced.
Further, the angles of the middle shield front top block, the middle shield rear top block, the middle shield front bottom block and the middle shield rear bottom block are all 108 degrees; the angles of the front left block, the rear left block, the front right block and the rear right block of the middle shield are all 72 degrees. When the shield machine needs to be disassembled in a tunnel, the middle shield can be disassembled through the block positions designed in advance, each block is transported respectively, and the blocks are reassembled after passing through the side wall, so that the transportation cost and the recovery cost are reduced.
Further, the angle of the tail shield top block is 162 degrees, and the angle of the tail shield bottom block is 198 degrees. When the shield machine needs to be disassembled in a tunnel, the tail shield can be disassembled through the pre-designed block positions, each block is transported respectively, and is reassembled after passing through the side wall, so that the transportation cost and the recovery cost are reduced.
The invention further aims to provide a disassembly station-crossing construction method of the closed station disassembly station-crossing shield system, which specifically comprises the following steps:
s1, cutter head station-crossing: after the connecting bolt of the cutter head is removed, the cutter head is turned over by using a track crane and is placed on a small track car; after the cutter head is transported to an originating well by the rail trolley, the cutter head is erected and fixed at an originating position through a bridge crane;
s2, separating the host from a rear matched trailer: before the screw conveyor is dismantled, the main machine is separated from the rear matched trailer, after a special flat trolley supporting equipment bridge is used, the rear matched trailer is integrally withdrawn by a certain distance L1, and a space is reserved for dismantling the screw conveyor and the splicing machine;
s3, dismantling the screw conveyer: dismantling of the spiral conveyor is completed by using the chain block, and then the spiral conveyor is horizontally placed on the flat trolley and is withdrawn for a certain distance L2, so that a space is reserved for dismantling the splicing machine;
s4, dismantling the assembling machine: after the screw conveyor is dismantled, a tunnel is laid to a section of extension track on a tail shield, a specially-made flat trolley is used for supporting the assembling machine, and the assembling machine is withdrawn for a certain distance L3 after connecting bolts of the assembling machine are dismantled; wherein L1> L2> L3;
s5, enabling a front shield and a main drive to pass through a station: removing the front shield top block, rotating by 90 degrees, placing the front shield top block on a special bracket, fixing the front shield top block and the front shield bottom block by using a rib plate, and conveying the front shield right block, the front shield left block and a main drive to an originating wellhead together in a stepping mode by using two pushing oil cylinders to finish station passing and recovery;
s6, blocking before and blocking after the middle shield: the intermediate shield front block and the intermediate shield rear block are similar to the front shield in the process of passing through the station, but the intermediate shield front block and the intermediate shield rear block do not need to rotate by 90 degrees after the intermediate shield front top block and the intermediate shield rear top block are removed, and the station passing through and the recovery are directly finished in a transverse pushing mode;
s7, installation of a splicing machine: before the erector is installed, firstly, laying a line track, then, conveying the erector to an originating well end by using a flat plate trolley and completing assembly;
s8, tail shield station crossing: the tail shield does not need to rotate 90 degrees after the tail shield top block is removed, the station crossing is directly finished in a transverse pushing mode, the tail shield bottom block is installed after the station crossing, and the tail shield top block is not installed when placed on one side;
s9, installing a screw conveyor and a tail shield top block: sequentially conveying to a starting well end by using a flat trolley screw conveyor, installing the screw conveyor through a chain hoist, and then installing a tail shield top block;
s10, mounting a rear matched trailer: conveying the rear matched trailer to a starting well end by using a flat trolley, completing the assembly of an equipment bridge, dismantling an equipment bridge straining beam interfering with the side wall of the standard section in advance and turning the walking platform of the outer side walking platform for 90 degrees; and then, assembling various lines and pipelines according to the positions marked in advance, and completing the disassembly and the station passing of the shield machine.
Compared with the prior art, the invention has the beneficial effects that:
the design and construction method of the shield machine for the disassembly and passing of the closed station, provided by the invention, effectively improves the disassembly efficiency in the tunnel, reduces the risk of disassembly in the tunnel, and reduces the later recovery cost of the shield machine. The purpose of closing the station inner cutter head and the shield body to pass through the station is achieved, and the purpose that the rear matching structure normally passes through the standard section side wall is achieved.
Drawings
FIG. 1 is a diagram of anterior shield segmentation in the present invention;
FIG. 2 is a diagram of anterior segment of the middle shield in the present invention;
FIG. 3 is a schematic diagram of posterior-anterior partitioning of the middle shield in the present invention;
FIG. 4 is a schematic view of the tail shield of the present invention;
FIG. 5 is a schematic view of a removable structure of the device bridge of the present invention;
FIG. 6 is a schematic view of the outboard side platform of the trailer of the present invention;
FIG. 7 is a state diagram of the shield system before the shield system passes the station;
FIG. 8 is a state diagram of cutter head passing station in the invention;
FIG. 9 is a state diagram of the main frame and rear trailer combination of the present invention in a disengaged state;
FIG. 10 is a state view of the screw conveyor of the present invention with the screw conveyor removed;
FIG. 11 is a state diagram of the installation of the present invention when it is disassembled;
FIG. 12 is a diagram of the status of the anterior shield and the main drive in the present invention during the transition from station to station;
FIG. 13 is a diagram showing the state of the shield front blocking station-crossing in the present invention;
FIG. 14 is a diagram illustrating a state of a post-shield blocking station-crossing in the present invention;
FIG. 15 is a state diagram of the installation of the assembling machine of the present invention;
FIG. 16 is a diagram illustrating the tail shield passing through the station according to the present invention;
FIG. 17 is a view showing a state in which the screw conveyor and the tail shield top block are mounted in the present invention;
fig. 18 is a state view of the rear kit trailer of the present invention when installed.
In the figure:
1. a anterior shield top block; 2. a anterior shield left block; 3. a anterior shield bottom block; 4. a anterior shield right block; 5. a bolt; 6. a middle shield front top block; 7. a middle shield front right block; 8. a middle shield front bottom block; 9. the anterior left block of the middle shield; 10. a middle shield rear top block; 11. the middle shield rear right block; 12. a middle shield rear bottom block; 13. the middle shield rear left block; 14. a tail shield top block; 15. a tail shield bottom block; 16. pulling a beam of the equipment bridge; 17. a walking platform; 18. a pin shaft; 19. a platform leg; 20. a cutter head; 21. anterior shield; 22. main driving; 23. partitioning before the middle shield; 24. partitioning behind the middle shield; 25. a tail shield; 26. assembling machine; 2. a screw conveyor; 28. a device bridge; 29. a rear matching trailer; 30. hoisting a machine; 31. a rail trolley; 33. a flat car; 34. a chain block; 35. extending the track; 37. a rib plate.
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.
Examples
In shield construction projects among the stations A, B and C, the station B is an established closed station, and the station B is provided with an established air duct wall or a narrow side wall, so that a shield machine cannot directly pass through the station B. In the past scheme, a shield machine is excavated from a station A to a station B, retreats and then is excavated from the station C to the station B. In the embodiment, the structure of the shield machine is designed in a targeted manner, so that the shield machine can directly pass through the station B, and the large workload is reduced.
The shield system for disassembling and passing the station of the closed station comprises improvements on a front shield, a middle shield, a tail shield, an equipment bridge and a trailer outside walking platform, and specifically comprises the following steps:
the anterior shield 17 comprises an anterior shield top block 1, an anterior shield left block 2, an anterior shield bottom block 3 and an anterior shield right block 4 which are sequentially connected on the same plane and are connected into a whole by bolts 5, wherein the angles of the anterior shield top block 1 and the anterior shield bottom block 3 are both 87 degrees, and the angles of the anterior shield left block 2 and the anterior shield right block 4 are both 93 degrees;
the number of the middle shields is two, and the middle shields are divided into a middle shield front block 19 and a middle shield rear block 20 from front to back; the front middle shield sub-block 19 and the rear middle shield sub-block 20 are respectively composed of four blocks, wherein the front middle shield sub-block 19 comprises a front middle shield top block 6, a front middle shield right block 7, a front middle shield bottom block 8 and a front middle shield left block 9 which are sequentially in threaded connection on the same plane; the middle shield rear sub-block 20 comprises a middle shield rear top block 10, a middle shield rear right block 11, a middle shield rear bottom block 12 and a middle shield rear left block 13 which are sequentially in threaded connection on the same plane; specifically, the angles of the middle shield front top block 6, the middle shield rear top block 10, the middle shield front bottom block 8 and the middle shield rear bottom block 12 are all 108 degrees; the angles of the middle shield front left block 9, the middle shield rear left block 13, the middle shield front right block 7 and the middle shield rear right block 11 are all 72 degrees;
the tail shield 21 is formed by connecting a tail shield top block 14 and a tail shield bottom block 15 on the same plane in a threaded manner, the angle of the tail shield top block 14 is 162 degrees, and the angle of the tail shield bottom block 15 is 198 degrees;
the equipment bridge tie beams 16 on the two sides of the equipment bridge are designed to be detachable structures, the equipment bridge tie beams 16 are detached when the shield machine starts, and the detached equipment bridge tie beams 16 are assembled after the equipment bridge passes through the side wall;
the outer side walking platform of the trailer is of a reversible structure and specifically comprises a walking platform 17, a pin shaft 18 and platform supporting legs 19, and the walking platform 17 can turn over on the platform supporting legs 19 in the horizontal and vertical directions by taking the pin shaft 18 as a center; when the shield machine starts, the traveling platform 17 is turned over by 90 degrees, and the traveling platform 17 is turned over after the trailer passes through the side wall.
The invention also discloses a disassembly station-crossing construction method of the closed station disassembly station-crossing shield system, which specifically comprises the following steps:
s1, cutter head 20 passing: as shown in fig. 8, after the connecting bolts of the cutterhead 20 are removed, the cutterhead 20 is turned over and placed on the rail trolley 31 by using the rail crane 30; after the cutterhead 20 is transported to a starting well by the rail trolley 31, the cutterhead 20 is erected and fixed at a starting position by the rail crane 30;
s2, separating the host from a rear matched trailer: as shown in fig. 9, before the screw conveyor 27 is removed, the main machine and the rear mating trailer 29 are separated, after the special flat car 33 is used for supporting the equipment bridge 28, the rear mating trailer 29 is integrally removed by about 30m, and a space is reserved for removing the screw conveyor 27 and the erector 26;
s3, detaching the screw conveyer 27: as shown in fig. 10, the dismantling of the screw conveyor 27 is completed by using a chain block 34, and then the screw conveyor 27 is laid on a flat car 33 and is withdrawn for about 20m, so as to leave a space for dismantling the erector 26;
s4, disassembling the assembling machine 26: as shown in fig. 11, after the screw conveyor 27 is removed, the erector 26 is supported by a special flat trolley 33 through a section of extension track 35 laid on the tail shield 24 by a tunnel, and the erector is withdrawn by 10mm after the connecting bolts of the erector 26 are removed;
s5, enabling the front shield 21 and the main drive 22 to pass through the station: as shown in fig. 12, after the front shield top block 1 is removed, the front shield top block is rotated by 90 degrees, the front shield top block is placed on a special bracket 31 and fixed by using a rib plate 37, and a front shield right block 2, a front shield bottom block 3, a front shield left block 4 and a main drive 22 are conveyed to an originating wellhead together in a stepping mode by using two top-pushing oil cylinders 38, so that the station-passing and the recovery are completed;
6. the middle shield front block 23 and the middle shield rear block 24 cross the station: as shown in fig. 13-14, the intermediate shield front sub-block 23 and the intermediate shield rear sub-block 24 are similar to the intermediate shield 21 in the process of passing through the station, except that the intermediate shield front sub-block 23 and the intermediate shield rear sub-block 24 do not need to be rotated by 90 degrees after the intermediate shield front top block 6 and the intermediate shield rear top block 10 are removed, and the passing through the station and the recovery are directly completed in a transverse pushing mode;
7. the assembling machine 26 is installed: as shown in fig. 15, prior to installation of the erector 26, laying of the line rails 35 is first completed, after which the erector 26 is transported to the originating well end using the pallet cars 33 and assembly is completed;
8. tail shield 25 station-crossing: as shown in fig. 16, the tail shield 25 does not need to rotate 90 degrees after the tail shield top block 14 is removed, the station passing is directly completed in a transverse pushing mode, the tail shield bottom block 13 is installed after the station passing, and the tail shield top block 14 is not installed once placed on one side;
9. the screw conveyor 27 is mounted with the tail shield top block 14: as shown in fig. 17, a flat plate trolley 33 is used for conveying the materials to the starting well end by a spiral conveyor 27 in sequence, and after the spiral conveyor is installed through a chain block 34, the tail shield top block 14 is installed;
10. and (3) mounting a rear matched trailer: as shown in fig. 18, the platform trolley 33 is used to transport the rear mating trailer 29 to the originating well end and complete the assembly of the equipment bridge 28, taking care to remove the equipment bridge tie beam 16 interfering with the standard section side wall in advance and turn the walking platform 17 of the outer side walking platform by 90 degrees; and then, assembling various lines and pipelines according to the positions marked in advance, and completing the disassembly and the station passing of the shield machine.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (5)
1. The utility model provides a shield system that passes a stop of sealing station disintegration, includes to the anterior shield, well shield, tail shield, equipment bridge and the trailer outside walking on stage its characterized in that:
the anterior shield comprises an anterior shield top block, an anterior shield left block, an anterior shield bottom block and an anterior shield right block which are sequentially connected on the same plane and are connected into a whole by bolts;
the two middle shields are divided into a middle shield front block and a middle shield rear block from front to back; the front middle shield sub-block and the rear middle shield sub-block are respectively composed of four blocks, wherein the front middle shield sub-block comprises a front middle shield top block, a front middle shield right block, a front middle shield bottom block and a front middle shield left block which are sequentially in threaded connection on the same plane; the rear middle shield sub-block comprises a rear middle shield top block, a rear middle shield right block, a rear middle shield bottom block and a rear middle shield left block which are sequentially in threaded connection on the same plane;
the tail shield is formed by connecting a tail shield top block and a tail shield bottom block on the same plane through threads;
the equipment bridge tie beams on the two sides of the equipment bridge are designed to be detachable structures, the equipment bridge tie beams are detached when the shield machine starts, and the detached equipment bridge tie beams are assembled after the equipment bridge passes through the side wall;
the walking platform on the outer side of the trailer is of a reversible structure and specifically comprises a walking platform, a pin shaft and platform supporting legs, and the walking platform can turn horizontally and vertically on the platform supporting legs by taking the pin shaft as a center; when the shield machine starts, the traveling platform is turned over by 90 degrees, and the trailer turns over the traveling platform after passing through the side wall.
2. The closed station disintegration station-passing shield system of claim 1, wherein: the angle between the anterior shield top block and the anterior shield bottom block is 87 degrees, and the angle between the anterior shield left block and the anterior shield right block is 93 degrees.
3. The closed station disintegration station-passing shield system of claim 1, wherein: the angles of the middle shield front top block, the middle shield rear top block, the middle shield front bottom block and the middle shield rear bottom block are all 108 degrees; the angles of the front left block, the rear left block, the front right block and the rear right block of the middle shield are all 72 degrees.
4. The closed station disintegration station-passing shield system of claim 1, wherein: the angle of the tail shield top block is 162 degrees, and the angle of the tail shield bottom block is 198 degrees.
5. The disassembly station-passing construction method of the closed station disassembly station-passing shield system according to any one of claims 1 to 4, comprising the following steps:
s1, cutter head station-crossing: after the connecting bolt of the cutter head is removed, the cutter head is turned over by using a track crane and is placed on a small track car; after the cutter head is transported to an originating well by the rail trolley, the cutter head is erected and fixed at an originating position through a bridge crane;
s2, separating the host from a rear matched trailer: before the screw conveyor is dismantled, the main machine is separated from the rear matched trailer, after a special flat trolley supporting equipment bridge is used, the rear matched trailer is integrally withdrawn by a certain distance L1, and a space is reserved for dismantling the screw conveyor and the splicing machine;
s3, dismantling the screw conveyer: dismantling of the spiral conveyor is completed by using the chain block, and then the spiral conveyor is horizontally placed on the flat trolley and is withdrawn for a certain distance L2, so that a space is reserved for dismantling the splicing machine;
s4, dismantling the assembling machine: after the screw conveyor is dismantled, a tunnel is laid to a section of extension track on a tail shield, a specially-made flat trolley is used for supporting the assembling machine, and the assembling machine is withdrawn for a certain distance L3 after connecting bolts of the assembling machine are dismantled; wherein L1> L2> L3;
s5, enabling a front shield and a main drive to pass through a station: removing the front shield top block, rotating by 90 degrees, placing the front shield top block on a special bracket, fixing the front shield top block and the front shield bottom block by using a rib plate, and conveying the front shield right block, the front shield left block and a main drive to an originating wellhead together in a stepping mode by using two pushing oil cylinders to finish station passing and recovery;
s6, blocking before and blocking after the middle shield: the intermediate shield front block and the intermediate shield rear block are similar to the front shield in the process of passing through the station, but the intermediate shield front block and the intermediate shield rear block do not need to rotate by 90 degrees after the intermediate shield front top block and the intermediate shield rear top block are removed, and the station passing through and the recovery are directly finished in a transverse pushing mode;
s7, installation of a splicing machine: before the erector is installed, firstly, laying a line track, then, conveying the erector to an originating well end by using a flat plate trolley and completing assembly;
s8, tail shield station crossing: the tail shield does not need to rotate 90 degrees after the tail shield top block is removed, the station crossing is directly finished in a transverse pushing mode, the tail shield bottom block is installed after the station crossing, and the tail shield top block is not installed when placed on one side;
s9, installing a screw conveyor and a tail shield top block: sequentially conveying to a starting well end by using a flat trolley screw conveyor, installing the screw conveyor through a chain hoist, and then installing a tail shield top block;
s10, mounting a rear matched trailer: conveying the rear matched trailer to a starting well end by using a flat trolley, completing the assembly of an equipment bridge, dismantling an equipment bridge straining beam interfering with the side wall of the standard section in advance and turning the walking platform of the outer side walking platform for 90 degrees; and then, assembling various lines and pipelines according to the positions marked in advance, and completing the disassembly and the station passing of the shield machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111156888.4A CN113882867A (en) | 2021-09-30 | 2021-09-30 | Disassembly station-crossing shield system for closed station and disassembly station-crossing construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111156888.4A CN113882867A (en) | 2021-09-30 | 2021-09-30 | Disassembly station-crossing shield system for closed station and disassembly station-crossing construction method |
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| Publication Number | Publication Date |
|---|---|
| CN113882867A true CN113882867A (en) | 2022-01-04 |
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| CN202111156888.4A Pending CN113882867A (en) | 2021-09-30 | 2021-09-30 | Disassembly station-crossing shield system for closed station and disassembly station-crossing construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116398155A (en) * | 2023-06-08 | 2023-07-07 | 中建交通建设集团有限公司 | Main machine shield body of assembled shell-discarding and disassembly shield machine and mounting and dismounting method thereof |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116398155A (en) * | 2023-06-08 | 2023-07-07 | 中建交通建设集团有限公司 | Main machine shield body of assembled shell-discarding and disassembly shield machine and mounting and dismounting method thereof |
| CN116398155B (en) * | 2023-06-08 | 2023-09-26 | 中建交通建设集团有限公司 | Main machine shield body of assembled shell-discarding and disassembly shield machine and mounting and dismounting method thereof |
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