CN113006805B - Equipment for mechanically building subway station and construction method thereof - Google Patents

Equipment for mechanically building subway station and construction method thereof Download PDF

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Publication number
CN113006805B
CN113006805B CN202110294159.9A CN202110294159A CN113006805B CN 113006805 B CN113006805 B CN 113006805B CN 202110294159 A CN202110294159 A CN 202110294159A CN 113006805 B CN113006805 B CN 113006805B
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China
Prior art keywords
shield tunneling
equipment
subway station
tunneling machine
diameter
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CN202110294159.9A
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Chinese (zh)
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CN113006805A (en
Inventor
任韶鹏
李洋
付增
刘树亚
郑爱元
何珺
吴礼程
于少辉
程鹏
李应飞
王宁
李鹏
魏旭鹏
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China Railway Engineering Equipment Group Co Ltd CREG
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China Railway Engineering Equipment Group Co Ltd CREG
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Priority to CN202110294159.9A priority Critical patent/CN113006805B/en
Publication of CN113006805A publication Critical patent/CN113006805A/en
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/06Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/06Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • E21D9/0621Shield advancing devices
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/06Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • E21D9/08Making 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

Abstract

The invention provides equipment for constructing a subway station by a mechanical method and a construction method thereof, wherein the equipment for constructing the subway station by the mechanical method comprises a plurality of shield tunneling machine units which are combined, the shield tunneling machine units are detachably connected, the plurality of combined shield tunneling machine units are matched with the section of a tunneling tunnel of the subway station, and each shield tunneling machine unit comprises at least one large-diameter shield tunneling device (1), at least one medium-diameter shield tunneling device (2) and at least one small-diameter shield tunneling device (3). The equipment for constructing the subway station by the mechanical method can be used for underground excavation construction of the tunnel of the subway station, so that the construction efficiency is improved, the construction safety risk is reduced, the construction quality is improved, the excavation blind area is reduced, and the influence on the surrounding environment and the construction cost are reduced.

Description

Equipment for mechanically building subway station and construction method thereof
Technical Field
The invention relates to the technical field of subway construction, in particular to equipment for constructing a subway station by a mechanical method and a construction method for constructing the subway station by the mechanical method.
Background
The twenty-first century is an era of comprehensive development and utilization of underground space, along with the continuous development of modern construction in China and the continuous popularization of urban traffic of subways, the comprehensive development technology of underground space is continuously popularized and applied to urban subway engineering. In the prior art, the subway station is mostly constructed by adopting an open cut method, and the subway station structure constructed by the open cut method has the advantages of high safety and relatively mature construction method; however, the construction by open excavation has large excavation area, the influence on the surrounding environment during construction is large, traffic jam is easy to cause, the risk is relatively high during construction by underground excavation, the construction by mechanical shield method has the advantages of safety, high efficiency and high mechanization degree, the traditional open excavation method and the underground excavation method are gradually replaced, however, in the process of carrying out underground excavation construction on the interval tunnels between subway stations by adopting the traditional shield equipment, the existing mechanical shield equipment can not shield and form the main structure of the subway station at one time, and the subway station is constructed separately at the later stage, thus greatly influencing the construction efficiency of the subway station structure, and in the process of mechanical shield construction of the subway station, an excavation blind area often exists, and the structure needs to be repaired manually in the later period, so that the construction quality and the construction efficiency of the mechanical shield construction are greatly influenced.
Disclosure of Invention
In order to improve the construction efficiency of constructing the subway station, the invention provides equipment for constructing the subway station by a mechanical method and a construction method thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows: the equipment for constructing the subway station by the mechanical method comprises a plurality of shield tunneling machine units which are combined, wherein the shield tunneling machine units are detachably connected, the plurality of shield tunneling machine units are matched with the section of a tunneling tunnel of the subway station after combination, each shield tunneling machine unit comprises at least one large-diameter shield tunneling device, at least one medium-diameter shield tunneling device and at least one small-diameter shield tunneling device, the outer diameter of the large-diameter shield tunneling device is larger than that of the medium-diameter shield tunneling device, and the outer diameter of the medium-diameter shield tunneling device is larger than that of the small-diameter shield tunneling device.
The adjacent shield tunneling machine units are arranged in a staggered mode from front to back, and the projections of the adjacent shield tunneling machine units on the tunneling tunnel section are mutually staggered.
The major diameter shield tunneling equipment is 9 m-grade shield tunneling equipment, the middle diameter shield tunneling equipment is 6 m-grade shield tunneling equipment, and the minor diameter shield tunneling equipment is below 4 m-grade shield tunneling equipment.
Each shield tunneling machine unit is provided with a side guard plate, the side guard plates are detachably connected with the shield tunneling machine units, and the inner sides of the side guard plates on the shield tunneling machine units are also provided with a combined assembly module which is used for assembly connection among the shield tunneling machine units; the combined assembly module comprises a flange connection module or/and a web plate reinforcing module, wherein the flange connection module comprises a connection structure flange and a flange connection bolt, the web plate reinforcing module comprises a web plate connection plate and a web plate connection bolt, a pin shaft connection hole is further formed in the web plate connection plate, and a positioning pin shaft is arranged on the pin shaft connection hole.
The shield tunneling machine comprises adjacent shield tunneling machine units, wherein plug-in guide combined components are arranged on the adjacent shield tunneling machine units and used for being adjacent to guide plug-in combination between the shield tunneling machine units, each plug-in guide combined component comprises an installation base, a telescopic connecting block is arranged on the installation base, the telescopic connecting blocks are arranged on the installation base in a sliding mode and are connected in a positioning mode through positioning connecting bolts, plug-in guide blocks are fixedly arranged at the front ends of the telescopic connecting blocks, and the plug-in guide blocks are connected with adjacent shields in a matched mode through plug-in guide grooves formed in the shield tunneling machine units.
Every shield tunnelling machine unit all includes shield structure host computer, tunnelling blade disc, drive arrangement, advancing system and back supporting, the back is supporting including screw conveyer and section of jurisdiction erector, still be provided with reaction frame and rice word roof beam on the shield tunnelling machine unit, reaction frame and rice word roof beam all with shield tunnelling machine unit can dismantle the connection.
The equipment for building the subway station by the mechanical method further comprises a machine body brim arranged at the front end of the shield tunneling machine unit, a plurality of propelling chutes are arranged on the machine body brim, propelling sliding blocks matched with the propelling chutes are arranged in the propelling chutes, propelling unit bodies are arranged on the propelling sliding blocks, the propelling unit bodies are distributed on the shield tunneling operation surface in a closed loop mode, and the propelling sliding blocks are connected with a propelling power device.
The propulsion unit body is a rigid structural plate, the propulsion power device is a hydraulic oil cylinder or a pneumatic cylinder, the propulsion power device corresponds to the propulsion unit body, and the propulsion power device can drive the propulsion unit body to advance.
The propulsion power device is also provided with a rigid connecting rod, the rigid connecting rod is provided with a hinged connection point, the propulsion sliding block is hinged with the hinged connection point through a push rod, and the propulsion power device can enable the plurality of propulsion unit bodies to advance synchronously.
A construction method for building a subway station by a mechanical method adopts the equipment for building the subway station by the mechanical method, and comprises the following steps:
step 1, vertical shaft construction:
respectively building an originating well and a receiving well at two ends of a subway station;
step 2, equipment installation:
assembling a plurality of shield tunneling machine units into equipment for constructing the subway station by a mechanical method in the starting well according to the section size of a tunneling tunnel of the subway station, disassembling side guard plates on the adjacent shield tunneling machine units, performing the assembling of the adjacent shield tunneling machine units by a flange connecting module or/and a web plate reinforcing module arranged on the shield tunneling machine units, adjusting the position between the adjacent shield tunneling machine units by inserting a guide assembling component, installing a spiral conveyor on the shield tunneling machine units, arranging a reaction frame and a cross beam on the shield tunneling machine units, arranging a machine body brim at the front end of the shield tunneling machine units, and arranging a propelling unit body on the machine body brim;
step 3, tunneling construction:
after the equipment combination of the mechanical method for building the subway station is completed, a subway station main body to be built is formed in a one-step shield mode, in the tunneling process, small-diameter shield tunneling equipment is distributed and arranged at the combined blind area position of large-diameter shield tunneling equipment and middle-diameter shield tunneling equipment, and when the shield tunneling subway station is in an unstable working condition, a propulsion power device pushes a propulsion unit body arranged on a machine body cap brim to synchronously advance or retreat, so that a stable closed-loop space is formed in the front space of shield tunneling;
step 4, the equipment receives:
after the equipment for constructing the subway station by the mechanical method is tunneled to complete the subway station, disassembling the equipment for constructing the subway station by the mechanical method in the receiving well, hoisting the disassembled shield tunneling machine unit out of the receiving well through hoisting equipment, and continuously tunneling shield construction forward by the residual shield tunneling machine unit in the receiving well;
step 5, site recovery:
and performing top cover construction on the starting well and the receiving well to recover the original appearance of the site.
The invention has the beneficial effects that:
1. the combined assembly type tunneling equipment is used for performing one-time tunneling molding on the tunnel between the subway stations, so that the construction efficiency is high, and the construction period is short.
2. The assembled type tunneling device can be adjusted and combined randomly according to different specific structures of the subway station, and the construction of various subway station structural modes is met.
3. Through cartridge direction formula combination assembling process, the assembly precision is high, and low in labor strength improves combination assembly efficiency.
4. The stratum instability preventing device is arranged, so that the construction working condition under the unstable condition of the construction stratum can be effectively met, and the construction safety factor is high.
5. The detachable cross beams arranged inside each heading machine can conveniently change and adjust the segment erectors with different segment specifications, and meet the assembling requirements of various segments.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic front view of the equipment for building a subway station by the mechanical method of the present invention.
Fig. 2 is a schematic top view of a part of the equipment for building a subway station by the mechanical method according to the present invention.
Fig. 3 is a schematic partial top view of the mechanical method for building a subway station, which is provided with a reaction frame, a cross beam and a segment erector.
Fig. 4 is a schematic working diagram of a device for preventing the formation instability of the equipment for mechanically constructing the subway station according to the present invention.
Fig. 5 is a schematic view of a web reinforcement module.
Fig. 6 is a schematic view of a flange connection module.
Fig. 7 is an enlarged schematic view of a web reinforcement module.
FIG. 8 is a schematic view of the insertion of the guide assembly member.
Fig. 9 is a schematic view of a formation-destabilizing prevention device.
FIG. 10 is a schematic view of a propulsion power unit.
1. Major diameter shield tunneling equipment; 2. medium diameter shield tunneling equipment; 3. small diameter shield tunneling equipment; 4. a side guard plate; 5. a web reinforcement module; 6. a flange connection module; 7. inserting a guide combined component; 8. a shield host machine; 9. tunneling a cutter head; 10. a drive device; 11. a propulsion system; 12. a reaction frame; 13. a beam shaped like a Chinese character 'mi'; 14. a segment erector; 15. a propulsion unit body; 16. a web connecting plate; 17. a web connecting bolt; 18. connecting a pin shaft with a hole; 19. positioning a pin shaft; 20. mounting a base; 21. a telescopic connecting block; 22. positioning the connecting bolt; 23. inserting a guide block; 24. a machine body brim; 25. a propulsion chute; 26. a pushing slide block; 27. a propulsion power unit; 28. a rigid link; 29. an articulated connection point; 30. a push rod;
101. an upper large-diameter shield tunneling device; 102. lower side major diameter shield tunneling equipment; 103. left large diameter shield tunneling equipment; 104. right major diameter shield tunneling equipment;
201. left middle diameter shield tunneling equipment; 202. and (4) right middle-diameter shield tunneling equipment.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The equipment for building the subway station by the mechanical method comprises a plurality of shield tunneling machine units which are combined, wherein two adjacent shield tunneling machine units are detachably connected, the plurality of shield tunneling machine units are matched with the section of a tunneling tunnel of the subway station after combination, each shield tunneling machine unit comprises at least one large-diameter shield tunneling device 1, at least one medium-diameter shield tunneling device 2 and at least one small-diameter shield tunneling device 3, the outer diameter of each large-diameter shield tunneling device 1 is larger than that of each medium-diameter shield tunneling device 2, and the outer diameter of each medium-diameter shield tunneling device 2 is larger than that of each small-diameter shield tunneling device 3, as shown in figures 1 and 2.
In this embodiment, the adjacent shield tunneling machine units are staggered back and forth, and the projections of the adjacent shield tunneling machine units on the tunneling tunnel section are staggered with each other. The major diameter shield tunneling equipment 1 can be 9 m-grade shield tunneling equipment, the middle diameter shield tunneling equipment 2 can be 6 m-grade shield tunneling equipment, and the minor diameter shield tunneling equipment 3 can be below 4 m-grade shield tunneling equipment.
The axis of the large-diameter shield tunneling device 1, the axis of the medium-diameter shield tunneling device 2 and the axis of the small-diameter shield tunneling device 3 are parallel. The large-diameter shield tunneling equipment 1, the medium-diameter shield tunneling equipment 2 and the small-diameter shield tunneling equipment 3 can be assembled in any combination mode, the requirement that the combined tunnel is matched with the section of a tunneling tunnel of a subway station can be met, and the cutterhead tunneling construction working face of the shield tunneling machine unit ensures that adjacent cutterheads are arranged in a complementary interference staggered mode.
In the present embodiment, the multiple circular shield tunneling machines include four large-diameter shield tunneling devices 1, and the four large-diameter shield tunneling devices 1 are an upper large-diameter shield tunneling device 101, a lower large-diameter shield tunneling device 102, a left large-diameter shield tunneling device 103, and a right large-diameter shield tunneling device 104, respectively, in the order of positional relationship from top to bottom, from left to right, as shown in fig. 1.
In this embodiment, the axis of the upper large-diameter shield tunneling device 101 is located right above the axis of the lower large-diameter shield tunneling device 102, the projections of the upper large-diameter shield tunneling device 101 and the lower large-diameter shield tunneling device 102 on the tunneling surface are arranged in a staggered manner, the axis of the left large-diameter shield tunneling device 103 is located on the left side of the axis of the lower large-diameter shield tunneling device 102, the projections of the left large-diameter shield tunneling device 103 and the lower large-diameter shield tunneling device 102 on the tunneling surface are arranged in a staggered manner, the left large-diameter shield tunneling device 103 and the right large-diameter shield tunneling device 104 are symmetrically arranged on the left side and the right side of the lower large-diameter shield tunneling device 102, and the left large-diameter shield tunneling device 103 and the right large-diameter shield tunneling device 104 are located on the lower portion of the equipment for constructing the subway station by the mechanical method.
In this embodiment, the heading cutterhead 9 of the upper large-diameter shield tunneling device 101 is located in front of the heading cutterhead 9 of the lower large-diameter shield tunneling device 102, the heading cutterhead 9 of the left large-diameter shield tunneling device 103 and the heading cutterhead 9 of the right large-diameter shield tunneling device 104 are both located between the heading cutterhead 9 of the upper large-diameter shield tunneling device 101 and the heading cutterhead 9 of the lower large-diameter shield tunneling device 102, and the heading cutterhead 9 of the left large-diameter shield tunneling device 103 and the heading cutterhead 9 of the right large-diameter shield tunneling device 104 are located in the same vertical plane, as shown in fig. 1 and 2.
In this embodiment, the multiple circular shield tunneling machines include two middle-diameter shield tunneling devices 2, the two middle-diameter shield tunneling devices 2 are a left middle-diameter shield tunneling device 201 and a right middle-diameter shield tunneling device 202, the left middle-diameter shield tunneling device 201 and the right middle-diameter shield tunneling device 202 are symmetrically arranged on the left and right sides of the upper large-diameter shield tunneling device 101, the tunneling cutterhead 9 of the left middle-diameter shield tunneling device 201 and the tunneling cutterhead 9 of the right middle-diameter shield tunneling device 202 are located in the same vertical plane, and the tunneling cutterhead 9 of the left middle-diameter shield tunneling device 201 is located between the upper large-diameter shield tunneling device 101 and the left large-diameter shield tunneling device 103, as shown in fig. 1.
The projections of the upper large-diameter shield tunneling device 101 and the left middle-diameter shield tunneling device 201 on the tunneling surface are arranged in a staggered manner, the projections of the left middle-diameter shield tunneling device 201 and the left large-diameter shield tunneling device 103 on the tunneling surface are arranged in a staggered manner, the projections of the upper large-diameter shield tunneling device 101 and the right middle-diameter shield tunneling device 202 on the tunneling surface are arranged in a staggered manner, and the projections of the right middle-diameter shield tunneling device 202 and the right large-diameter shield tunneling device 104 on the tunneling surface are arranged in a staggered manner. The distance between the axis of the left middle diameter shield tunneling device 201 and the axis of the upper large diameter shield tunneling device 101 is smaller than the distance between the axes of the left large diameter shield tunneling device 103 and the right large diameter shield tunneling device 104.
In this embodiment, one small-diameter shield tunneling device 3 is provided on the upper side between the upper-side large-diameter shield tunneling device 101 and the left-side middle-diameter shield tunneling device 201, one small-diameter shield tunneling device 3 is provided on the upper side between the upper-side large-diameter shield tunneling device 101 and the right-side middle-diameter shield tunneling device 202, two small-diameter shield tunneling devices 3 are provided on the left side between the left-side middle-diameter shield tunneling device 201 and the left-side large-diameter shield tunneling device 103, two small-diameter shield tunneling devices 3 are provided on the right side between the right-side middle-diameter shield tunneling device 202 and the right-side large-diameter shield tunneling device 104, one small-diameter shield tunneling device 3 is provided on the lower side between the left-side large-diameter shield tunneling device 103 and the lower-side large-diameter shield tunneling device 102, and one small-diameter shield tunneling device 3 is provided on the lower side between the right-side large-diameter shield tunneling device 104 and the lower-side large-diameter shield tunneling device 102.
In this embodiment, each shield tunneling machine unit is provided with a side guard plate 4, the side guard plates 4 are detachably connected with the shield tunneling machine unit, and a combined assembly module is further arranged on the inner side of the side guard plates 4 on the shield tunneling machine unit and used for assembly connection between the shield tunneling machine units; the combined assembly module comprises a flange connection module 6 or/and a web plate reinforcing module 5, wherein the flange connection module 6 comprises a connection structure flange and a flange connection bolt, the web plate reinforcing module 5 comprises a web plate connection plate 16 and a web plate connection bolt 17, a pin shaft connection hole 18 is further formed in the web plate connection plate 16, and a positioning pin shaft 19 is arranged in the pin shaft connection hole 18, as shown in fig. 5, 6 and 7.
When the side guard plates 4 are not disassembled, the single tunneling attitude of the tunneling machine (namely a shield tunneling machine unit) can be kept, the combined assembly modules arranged in the equipment are exposed after the side guard plates 4 are disassembled, and the combined assembly modules between the tunneling equipment are assembled in a combined mode through the disassembling and assembling connecting components, so that the equipment for constructing the subway station by the mechanical method is combined. And a plug-in mounting guide combined component 7 is arranged between two adjacent shield tunneling machine units, so that the guide type quick plug-in mounting connection of multi-circle tunneling equipment is realized, the positioning is accurate, the construction labor intensity is reduced, and the quality of combined equipment is ensured.
Specifically, the inserted guide combination component 7 is used for guiding and inserting combination between two adjacent shield tunneling machine units, and the inserted guide combination component 7 can adjust the radial position between the two adjacent shield tunneling machine units. The insertion guide combined component 7 comprises a mounting base 20, a telescopic connecting block 21 is arranged on the mounting base 20, the telescopic connecting block 21 is arranged on the mounting base 20 in a sliding mode and is connected in a positioning mode through a positioning connecting bolt 22, an insertion guide block 23 is fixedly arranged at the front end of the telescopic connecting block 21, and the insertion guide block 23 is in matched insertion connection with an insertion guide groove formed in the tunneling machine unit of an adjacent shield, as shown in fig. 2 and 8.
Every shield entry driving machine unit all can adopt current shield entry driving machine, every shield entry driving machine unit all includes that shield structure host computer 8, tunnelling blade disc 9, drive arrangement 10, advancing system 11 are supporting with the back, the back is supporting including screw conveyer and section of jurisdiction erector 14, still be provided with reaction frame 12 and rice word roof beam 13 on the shield entry driving machine unit, reaction frame 12 and rice word roof beam 13 all with the shield entry driving machine unit can be dismantled and be connected. The reaction frame 12 is detachably mounted, and the reaction frame 12 can provide starting support reaction force for the shield equipment assembled adjacently. Set up detachable rice word roof beam 13, can conveniently carry out the segment erector change adjustment of different section of jurisdiction specifications, satisfy the requirement of assembling of multiple section of jurisdiction, as shown in fig. 3.
In order to prevent the stratum instability at the front end of the shield tunneling machine unit, the front end of the equipment for mechanically constructing the subway station is provided with a stratum instability prevention device, the stratum instability prevention device comprises a machine body cap peak 24 and a propulsion power device 27, the machine body cap peak 24 is provided with a plurality of propulsion sliding grooves 25, the propulsion sliding grooves 25 are internally provided with propulsion sliding blocks 26 matched with the propulsion sliding grooves 25, the propulsion sliding blocks 26 are provided with propulsion unit bodies 15, the propulsion unit bodies 15 are distributed in a closed loop on a shield tunneling working face, and the propulsion sliding blocks 26 are connected with the propulsion power device 27, as shown in fig. 4, 9 and 10.
Wherein, the propelling unit body 15 can be an arc rigid structural plate, the propelling power device 27 can be a hydraulic cylinder or a pneumatic cylinder, the propelling power device 27 corresponds to the propelling unit body 15, and the propelling power device 27 can drive the propelling unit body 15 to move forward or backward. The propulsion power device 27 is further provided with a rigid connecting rod 28, the rigid connecting rod 28 is provided with a hinge connecting point 29, the propulsion sliding block 26 is hinged with the hinge connecting point 29 through a push rod 30 and used for realizing any transition hinge fit of the propulsion unit bodies 15, and the propulsion power device 27 can enable the plurality of propulsion unit bodies 15 to advance or retreat synchronously.
The construction method for building the subway station by the mechanical method is introduced below, the equipment for building the subway station by the mechanical method is adopted in the construction method for building the subway station by the mechanical method, and the construction method for building the subway station by the mechanical method comprises the following steps:
step 1, vertical shaft construction:
respectively arranging an initial well and a receiving well at two ends of a subway station, combining the shield tunneling machine units which finish the previous tunneling in the initial well to realize the combined equipment process of the equipment for constructing the subway station by the mechanical method, disassembling and assembling the equipment for constructing the subway station which finishes the one-time shield molding of the subway station in the receiving well, and continuously performing forward shield construction on the disassembled and assembled shield tunneling machine units;
step 2, equipment installation: the method comprises the steps of assembling a plurality of shield tunneling machine units in a starting well according to the shield tunneling section size of a subway station, disassembling and assembling side protection plates 4 on the adjacent shield tunneling machine units, assembling and assembling the adjacent shield tunneling machine units through flange connection modules 6 or/and web plate reinforcing modules 5 arranged on the shield tunneling machine units, arranging inserting guide combined members 7 on the shield tunneling machine units in order to realize convenient assembling process, arranging screw conveyors on rear matching sleeves of the shield tunneling machine units in order to meet the slag tapping requirement at the corresponding propelling speed of large-section tunneling, arranging reaction frames 12 and cross beams 13 on the shield tunneling machine units, wherein the reaction frames 12 are used for starting the adjacent shield tunneling machine units to provide supporting reaction forces, and the arranged cross beams 13 are used for replacing and adjusting different segment splicing machines, the splicing requirements of different duct piece sizes are met; and when the shield tunneling subway station is in an unstable working condition, the front end of the shield tunneling machine unit is provided with a machine body cap peak 24, and a propelling unit body is arranged on the machine body cap peak.
Step 3, tunneling construction:
after the subway station equipment combination is built, a subway station main body to be built is formed in a primary shield mode, in the tunneling process, small-diameter shield tunneling equipment 3 is distributed and arranged at the combined blind area position of large-diameter shield tunneling equipment 1 and medium-diameter shield tunneling equipment 2, the primary shield forming efficiency of the subway station is improved, when the shield tunneling subway station stratum is unstable, a propelling power device 27 pushes a propelling unit body arranged on a machine body cap peak 24 to synchronously stretch out or recover, a stable closed-loop space is formed in the front space of shield tunneling, and a rigid connecting rod 28 arranged on the propelling power device 27 achieves synchronous stretching out or recovering operation of the propelling unit body 15.
Step 4, the equipment receives:
after the subway station is built and the equipment is tunneled, the equipment for building the subway station is disassembled in the receiving well, the disassembled shield tunneling machine unit is hoisted out of the receiving well through the hoisting equipment, and the residual shield tunneling machine unit in the receiving well continues to tunnel the shield forward.
Step 5, site recovery:
and performing top cover construction on the starting well and the receiving well to recover the original appearance of the site.
For convenience of understanding and description, the absolute positional relationship is used in the present invention, and unless otherwise specified, the term "up" indicates the upper direction in fig. 1, the term "down" indicates the lower direction in fig. 1, the term "left" indicates the left direction in fig. 1, the term "right" indicates the right direction in fig. 1, the term "front" indicates a direction perpendicular to the paper of fig. 1 and directed to the outside of the paper, and the term "rear" indicates a direction perpendicular to the paper of fig. 1 and directed to the inside of the paper. The present invention has been described in terms of the user or reader's perspective, but the above directional terms should not be construed or interpreted as limiting the scope of the invention.
The above description is only exemplary of the invention and should not be taken as limiting the scope of the invention, so that the invention is intended to cover all modifications and equivalents of the embodiments described herein. In addition, the technical features and the technical schemes, and the technical schemes can be freely combined and used.

Claims (9)

1. The equipment for constructing the subway station by the mechanical method is characterized by comprising a plurality of shield tunneling machine units which are combined, wherein the shield tunneling machine units are detachably connected, the plurality of combined shield tunneling machine units are matched with the section of a tunneling tunnel of the subway station, each shield tunneling machine unit comprises at least one large-diameter shield tunneling device (1), at least one medium-diameter shield tunneling device (2) and at least one small-diameter shield tunneling device (3), the outer diameter of the large-diameter shield tunneling device (1) is larger than that of the medium-diameter shield tunneling device (2), and the outer diameter of the medium-diameter shield tunneling device (2) is larger than that of the small-diameter shield tunneling device (3);
the shield tunneling machine is characterized in that plug-in mounting guide combined members (7) are arranged on the adjacent shield tunneling machine units, the plug-in mounting guide combined members (7) are used for being adjacent to each other, guide plug-in mounting combination between the shield tunneling machine units is achieved, each plug-in mounting guide combined member (7) comprises a mounting base (20), a telescopic connecting block (21) is arranged on the mounting base (20), the telescopic connecting blocks (21) are arranged on the mounting bases in a sliding mode and are connected in a positioning mode through positioning connecting bolts (22), plug-in mounting guide blocks (23) are fixedly arranged at the front ends of the telescopic connecting blocks (21), and the plug-in mounting guide blocks (23) are connected with adjacent shields in a matching mode through plug-in mounting guide grooves formed in the shield tunneling machine units.
2. The equipment for mechanically constructing a subway station as claimed in claim 1, wherein said shield tunneling machine units are arranged in a staggered manner in front and back direction, and projections of said shield tunneling machine units on said tunneling tunnel section are staggered with each other.
3. The equipment for mechanically constructing a subway station as claimed in claim 1, wherein said large-diameter shield tunneling equipment (1) is 9 m-grade shield tunneling equipment, said medium-diameter shield tunneling equipment (2) is 6 m-grade shield tunneling equipment, and said small-diameter shield tunneling equipment (3) is below 4 m-grade shield tunneling equipment.
4. The equipment for mechanically constructing a subway station as claimed in claim 1, wherein each said shield tunneling machine unit is provided with a side guard plate (4), said side guard plate (4) is detachably connected with said shield tunneling machine unit, and a combined assembly module is further provided inside said side guard plate (4) of said shield tunneling machine unit, said combined assembly module being used for assembly connection between said shield tunneling machine units; the combined assembly module comprises a flange connection module (6) or/and a web plate reinforcing module (5), wherein the flange connection module (6) comprises a connection structure flange and a flange connection bolt, the web plate reinforcing module (5) comprises a web plate connection plate (16) and a web plate connection bolt (17), a pin shaft connection hole (18) is further formed in the web plate connection plate (16), and a positioning pin shaft (19) is arranged in the pin shaft connection hole (18).
5. The equipment for mechanically constructing a subway station as claimed in claim 1, wherein each said shield tunneling machine unit comprises a shield main machine (8), a tunneling cutter head (9), a driving device (10), a propulsion system (11) and a rear support, said rear support comprises a screw conveyor and a segment erector (14), said shield tunneling machine unit is further provided with a reaction frame (12) and a cross beam (13), and said reaction frame (12) and said cross beam (13) are detachably connected with said shield tunneling machine unit.
6. The equipment for mechanically constructing the subway station according to any one of claims 1 to 5, wherein the equipment for mechanically constructing the subway station further comprises a machine body cap brim (24) arranged at the front end of the shield tunneling machine unit, a plurality of propelling sliding grooves (25) are arranged on the machine body cap brim (24), propelling sliding blocks (26) matched with the propelling sliding grooves (25) are arranged in the propelling sliding grooves (25), propelling unit bodies (15) are arranged on the propelling sliding blocks (26), the propelling unit bodies (15) are distributed on the shield operation surface in a closed loop mode, and the propelling sliding blocks (26) are connected with a propelling power device (27).
7. Equipment for mechanically constructing a subway station as claimed in claim 6, wherein said propulsion unit (15) is a rigid structural plate, said propulsion power means (27) are hydraulic or pneumatic cylinders, said propulsion power means (27) are associated with said propulsion unit (15), said propulsion power means (27) being able to drive said propulsion unit (15) forward.
8. Equipment for mechanically constructing a subway station as claimed in claim 7, wherein said propulsion power unit (27) is further provided with a rigid link (28), said rigid link (28) is provided with a hinged connection point (29), said propulsion slide (26) is hinged to said hinged connection point (29) by means of a push rod (30), said propulsion power unit (27) is capable of advancing said plurality of propulsion unit bodies (15) synchronously.
9. A construction method for building a subway station by a mechanical method is characterized in that the construction method for building the subway station by the mechanical method adopts the equipment for building the subway station by the mechanical method of any one of claims 6 to 8, and the construction method for building the subway station by the mechanical method comprises the following steps:
step 1, vertical shaft construction:
respectively building an originating well and a receiving well at two ends of a subway station;
step 2, equipment installation:
assembling a plurality of shield tunneling machine units into equipment for constructing the subway station by the mechanical method according to the section size of a tunneling tunnel of the subway station in the starting well, disassembling side guard plates (4) on the adjacent shield tunneling machine units, the adjacent shield tunneling machine units are assembled by a flange connection module (6) or/and a web plate reinforcing module (5) arranged on the shield tunneling machine units, the position between the adjacent shield tunneling machine units is adjusted by inserting a guide combined component (7), a screw conveyer is arranged on the shield tunneling machine unit, a reaction frame (12) and a beam (13) shaped like a Chinese character 'mi' are arranged on the shield tunneling machine unit, a machine body cap peak (24) is arranged at the front end of the shield tunneling machine unit, and a propulsion unit body (15) is arranged on the machine body cap peak (24);
step 3, tunneling construction:
after the equipment combination of the mechanical method for building the subway station is completed, a subway station main body to be built is formed in a one-step shield mode, in the tunneling process, small-diameter shield tunneling equipment (3) is distributed and arranged at the combined blind area position of large-diameter shield tunneling equipment (1) and middle-diameter shield tunneling equipment (2), and when the shield tunneling subway station stratum is unstable, a propulsion power device (27) pushes a propulsion unit body (15) arranged on a machine body brim (24) to synchronously advance or retreat, so that a stable closed-loop space is formed in the front space of shield tunneling;
step 4, the equipment receives:
after the equipment for constructing the subway station by the mechanical method is tunneled to complete the subway station, disassembling the equipment for constructing the subway station by the mechanical method in the receiving well, hoisting the disassembled shield tunneling machine unit out of the receiving well through hoisting equipment, and continuously tunneling shield construction forward by the residual shield tunneling machine unit in the receiving well;
step 5, site recovery:
and performing top cover construction on the starting well and the receiving well to recover the original appearance of the site.
CN202110294159.9A 2021-03-19 2021-03-19 Equipment for mechanically building subway station and construction method thereof Active CN113006805B (en)

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