CN110985018A - Three-circle shield main machine and shield machine for underground excavation of subway station and construction method - Google Patents
Three-circle shield main machine and shield machine for underground excavation of subway station and construction method Download PDFInfo
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- CN110985018A CN110985018A CN201911370484.8A CN201911370484A CN110985018A CN 110985018 A CN110985018 A CN 110985018A CN 201911370484 A CN201911370484 A CN 201911370484A CN 110985018 A CN110985018 A CN 110985018A
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- 238000010276 construction Methods 0.000 title claims abstract description 56
- 238000009412 basement excavation Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000005641 tunneling Effects 0.000 claims description 19
- 230000002146 bilateral effect Effects 0.000 claims description 2
- 238000000638 solvent extraction Methods 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 12
- 238000005192 partition Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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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
- 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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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
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- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a three-circle shield host, a shield machine and a construction method for underground excavation of a subway station. Compared with the construction of subway stations by open cut method, the invention has the advantages of less ground excavation, no traffic closure, no pipeline removal, noise and dust reduction, and the like; compared with the traditional underground excavation method, the method has the advantages of safety, high efficiency and high mechanization level.
Description
Technical Field
The invention relates to the technical field of subway tunnel construction, in particular to a three-circle shield main machine, a shield machine and a construction method for underground excavation of a subway station.
Background
With the continuous promotion of urbanization level, subway trips are gradually popularized, and the construction of subways is also gradually increased. The method is characterized in that a shield method is adopted to construct the interval tunnels between the subway stations, an open cut method is adopted to construct the subway stations, the open cut method is relatively reliable in construction and high in safety, but the excavation area is large, the influence on the periphery is large during construction, and particularly for some sections with busy traffic, traffic jam is caused by excavation of a large area; for traditional mine method underground excavation construction, the influence on the ground is small, but the construction condition is severe and the construction risk is relatively high. The shield machine is widely applied to the construction of the tunnel in the subway section by the advantages of safety, high efficiency and non-excavation, and important inspiration is brought to the underground excavation construction of the shield construction method of the subway station. However, the existing shield cannot simultaneously excavate the driving tunnel and the platform tunnel of the subway station, resulting in low excavation efficiency, and therefore, a safe and reliable construction device for underground excavation of the subway station is urgently needed to be provided.
Disclosure of Invention
Aiming at the defects in the background technology, the invention provides a three-circle shield main machine, a shield machine and a construction method for underground excavation of a subway station, which are used for solving the technical problems.
The technical scheme of the invention is realized as follows: the utility model provides a three-circle shield constructs host computer of undercut subway station, tunnelling host computer and back are supporting, the tunnelling host computer includes central big circular shield and constructs host computer, left side small circle shield and right side small circle shield host computer, and left side small circle shield host computer and right side small circle shield host computer can dismantle the both sides of connecting at central big circular shield and construct the host computer, and central big circular shield constructs host computer, left side small circle shield host computer and right side small circle shield host computer and all can dismantle with the back is supporting to be connected.
The left small circular shield host and the right small circular shield host are symmetrically arranged on two sides of the central large circular shield host, and the outer circular shield bodies of the left small circular shield host and the right small circular shield host are intersected with the outer circular shield body of the central large circular shield host respectively.
The small circle shield of left side shield host computer and the small circle shield body of right side shield host computer all include the small circle blade disc and the small circle shield body that the piecemeal set up, and the small circle is equipped with small circle drive in the small circle shield body, and small circle drive is connected with the small circle blade disc, and the front end of small circle shield body is equipped with small circle shield shell brim of a hat, and small circle shield shell brim of a hat is located small circle blade disc rear.
The right side of the small circle shield body of the small circle shield host machine in the left side and the left side of the small circle shield body of the small circle shield host machine in the right side are both provided with a first side flange plate, and a side protection plate can be detachably arranged on the first side flange plate.
The central large-circle shield host comprises a large-circle cutter head and a large-circle shield body arranged in a partitioning mode, a large-circle drive is arranged in the large-circle shield body and connected with the large-circle cutter head, a large-circle shield shell brim is arranged at the front end of the large-circle shield body, and the large-circle shield shell brim is located behind the large-circle cutter head.
The bilateral symmetry of the great circle shield body is equipped with second side flange board, can dismantle on the second side flange board and be equipped with the side shield.
When the left small circular shield host and the right small circular shield host are connected to two sides of the central large circular shield host, a first side flange plate of the left small circular shield host and a first side flange plate of the right small circular shield host are respectively connected with a second side flange plate of the central large circular shield host.
When the left small circular shield host and the right small circular shield host are connected to two sides of the central large circular shield host, the small circular cutter head of the left small circular shield host and the small circular cutter head of the right small circular shield host are arranged in a front-back layered mode with the large circular cutter head of the central large circular shield host.
A three-circle shield machine for underground excavation of a subway station comprises a three-circle shield host and a back support, wherein the three-circle shield host is detachably connected with the back support.
A construction method of a three-circle shield machine for underground excavation of a subway station comprises a center platform type subway station tunnel construction method and two side platform type subway station tunnel construction methods; the construction method of the central platform type subway station tunnel comprises the following steps:
a1: the left small circular shield host and the right small circular shield host are independently constructed, and a left subway tunnel and a right subway tunnel are respectively excavated;
a2: when the shield machine is constructed in a subway station area, the central large circular shield host machine is lifted to a first working well at one end of the subway station area, and the central large circular shield host machine is respectively assembled with the left small circular shield host machine and the right small circular shield host machine into a three-circular shield machine in the first working well;
a3: the three-circle shield machine completed in the step A2 continues to tunnel, and a tunnel of the subway station area is excavated;
a4: after the excavation of the tunnel of the subway station area is finished, the three-circle shield machine moves to a second working well at the other end of the subway station area, and the central large-circle shield main machine is removed from the second working well, so that the construction of the tunnel of the central platform type subway station is finished;
the construction method of the platform type subway station tunnel on two sides comprises the following steps:
b1: independently constructing a central large circular shield host, and excavating a central subway tunnel;
b2: when the shield machine is constructed in a subway station area, the left small circular shield host and the right small circular shield host are lifted to a first working well at one end of the subway station area, and the left small circular shield host, the right small circular shield host and the central large circular shield host are assembled into a three-circular shield machine in the first working well;
b3: the three-circle shield machine completed in the step B2 continues to tunnel, and a tunnel of the subway station area is excavated;
b4: after the excavation of the tunnel in the subway station area is completed, the three-circle shield machine moves to a second working well at the other end of the subway station area, the left small circular shield host and the right small circular shield host are removed in the second working well, and the construction of the tunnel in the subway station with two side platforms is completed.
Compared with the construction of subway stations by open cut method, the invention has the advantages of less ground excavation, no traffic closure, no pipeline removal, noise and dust reduction, and the like; compared with the traditional underground excavation method, the method has the advantages of safety, high efficiency and high mechanization level. In addition, the three-circle shield machine is formed by additionally arranging the shield machine for expanding on the basis of the shield machine for interval tunnel construction, so that the three-circle shield machine is assembled, the utilization rate of equipment is improved, and the construction cost is reduced; the three shield machines forming the three-circle shield machine can independently tunnel, can be constructed in a split or combined mode according to actual conditions, and has the advantages of strong adaptability, wide application range and high popularization value.
Drawings
In order to illustrate the embodiments of the invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the invention, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.
Fig. 1 is a schematic diagram of the internal structure of the integral tunneling main machine.
FIG. 2 is a schematic diagram of a left small circular shield main machine structure according to the present invention.
FIG. 3 is a schematic diagram of the central great circle shield main machine structure according to the present invention.
Fig. 4 is a schematic diagram of the assembling state of the three-circle shield tunneling machine.
Fig. 5 is a state diagram of a first step of tunnel construction of a central platform type subway station.
Fig. 6 is a state diagram of a second step of tunnel construction of the central platform type subway station.
Fig. 7 is a state diagram of a third step of tunnel construction of the central platform type subway station.
Fig. 8 is a state diagram of the fourth step of tunnel construction of the central platform type subway station.
Fig. 9 is a state diagram of a first step of tunnel construction of a two-side platform type subway station.
Fig. 10 is a state diagram of a second step of tunnel construction of a two-side platform type subway station.
Fig. 11 is a state diagram of a third step of tunnel construction of a two-side platform type subway station.
Fig. 12 is a state diagram of the fourth step of tunnel construction of a two-side platform type subway station.
Fig. 13 is a schematic cross-sectional view of a central platform type subway station tunnel.
Fig. 14 is a schematic cross-sectional view of a two-side platform type subway station tunnel.
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 obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, in embodiment 1, a three-circle shield main machine for underground excavation of a subway station includes a central large-circle shield main machine 1, a left-side small-circle shield main machine 2, and a right-side small-circle shield main machine 3, where the central large-circle shield main machine 1, the left-side small-circle shield main machine 2, and the right-side small-circle shield main machine 3 may be combined into a three-circle shield machine for excavation, or may be separately excavated, and three cutter heads are arranged in layers in front and back when combined excavation is performed. The left small circular shield host 2 and the right small circular shield host 3 are detachably connected to two sides of the central large circular shield host 1, and the left small circular shield host 2 and the right small circular shield host 3 are symmetrically connected to two sides of the central large circular shield host 1 to form a three-circular shield machine when three tunnels of a subway station are excavated simultaneously. The central large circular shield main machine 1, the left small circular shield main machine 2 and the right small circular shield main machine 3 are detachably connected with a rear matching; the rear matching auxiliary adopts a modular grouping design, which can respectively meet the independent tunneling of three shields and can also be quickly matched for use when combined tunneling.
Further, as shown in fig. 4, the left small circular shield host 2 and the right small circular shield host 3 are symmetrically disposed on both sides of the central large circular shield host 1, and the outer circular shields of the left small circular shield host 2 and the right small circular shield host 3 intersect with the outer circular shield of the central large circular shield host 1, respectively. The intersecting surfaces are connected by flange plate bolts, the connecting flange is designed by a standard interface, and the middle part of the flange plate is provided with a hole for communicating adjacent shield pipelines; when the three-circle shield machine is used for independent tunneling, the side plates are arranged on the shield body to form a whole circle with the shield body, when the three-circle shield machine is used for combined tunneling, the side plates are detached from the shield body, and the central large shield and the side small circular shields are combined into the three-circle shield machine.
Further, as shown in fig. 2, the left small circular shield host 2 and the right small circular shield host 3 both include a small circular cutter head 5 and a small circular shield body 4 arranged in blocks, a small circular drive 6 is arranged in the small circular shield body 4, the small circular drive 6 is connected with the small circular cutter head 5, the small circular drive drives the cutter head to rotate, and the small circular drive and the cutter head can adopt the existing structure. The front end of the small shield body 4 is provided with a small shield shell brim 7, and the small shield shell brim 7 and the small shield body are integrally formed or coaxially and fixedly arranged. The small shield shell brim 7 is positioned behind the small cutter head 5; the small circular shield shell brim is matched with the small circular cutter head 5, namely the shield shell brim with the cutter head in front is closer to the front than the shield shell brim with the cutter head behind so as to match the corresponding cutter head and ensure the stability of the excavated upper scarfing plane. The right side of the small shield body 4 of the left small circular shield host 2 and the left side of the small shield body 4 of the right small circular shield host 3 are both provided with a first side flange plate 8, namely the first side flange plate 8 is fixed on one side corresponding to the central large circular shield host 1, a side guard plate 9 is detachably arranged on the first side flange plate 8, and when the left small circular shield host 2 and the right small circular shield host 3 are independently constructed, the side guard plate is fixed on the first side flange plate to form a complete cylindrical shield body; when the three-circle shield machine is connected with the central great circle shield machine, the side protection plate 9 is detached, the first side flange plate is connected with the second side flange plate corresponding to the central great circle shield machine, and the three-circle shield machine is assembled.
As shown in fig. 3, in embodiment 2, a three-circle shield host for underground excavation of a subway station, the central large-circle shield host 1 includes a large-circle cutter head 10 and a large-circle shield body 11 arranged in blocks, a large-circle drive 12 is arranged in the large-circle shield body 11, the large-circle drive 12 is connected with the large-circle cutter head 10, the large-circle drive drives the large-circle cutter head to rotate, and the large-circle drive 12 and the large-circle cutter head 10 can both adopt the existing structure. The front end of the large circular shield body 11 is provided with a large circular shield shell brim 13, and the large circular shield shell brim 13 and the large circular shield body are integrally formed or coaxially and fixedly arranged. The big circular shield shell brim 13 is positioned behind the big circular cutter head 10. The big circular shield shell brim is matched with the big circular cutter head, namely the shield shell brim with the cutter head in front is closer to the front than the shield shell brim with the cutter head behind so as to match the corresponding cutter head and ensure the stability of the excavated upper scarfing plane. The two sides of the large circular shield body 11 are symmetrically and fixedly provided with second side flange plates 14, and the second side flange plates 14 are detachably provided with side shields 15. The second side flange plate is vertically and fixedly arranged in the large circular shield body, and during independent construction, a side shield bolt is fixed on the second side flange plate 14 to form a finished cylindrical shield body together with the large circular shield body; when the three-circle shield machine is matched with the left small circle shield host machine 2 and the right small circle shield host machine 3, the side shield is removed, the second side flange plate 14 is in bolted connection with the first side flange plate 8 corresponding to the left small circle shield host machine 2 and the right small circle shield host machine 3, and the three-circle shield machine is assembled.
Further, when the left small circular shield host 2 and the right small circular shield host 3 are connected to both sides of the central large circular shield host 1, the first side flange plate 8 of the left small circular shield host 2 and the first side flange plate 8 of the right small circular shield host 3 are respectively connected to the second side flange plate 14 of the central large circular shield host 1. The second side flange plate 14 is connected with the first side flange plate through bolts, the connecting flanges of the three shield hosts adopt standard interface design, the central large circular shield and the side small circular shield can be combined into a three-circular shield machine for tunneling, and can also be tunneled separately, and three cutter heads are arranged in layers from front to back during combined tunneling so as to ensure the stability of the excavated upper scarfing plane.
Further, when the left small circular shield host 2 and the right small circular shield host 3 are connected to two sides of the central large circular shield host 1, the small circular cutter head 5 of the left small circular shield host 2 and the small circular cutter head 5 of the right small circular shield host 3 are arranged in layers from front to back with the large circular cutter head 10 of the central large circular shield host 1. The large circular cutter head and the small circular cutter head are arranged in a front-back layered mode, the large circular cutter head can be a front cutter head, and the small circular cutter head is a rear cutter head; the large circular cutter head can also be a rear cutter head, and the small circular cutter head is a front cutter head; during combined excavation, the partition plate I16 with the cutter head in front is closer to the front than the partition plate II 17 with the cutter head in back so as to ensure the stability of the soil bin, and the shield shell brim with the cutter head in front is closer to the front than the shield shell brim with the cutter head in back so as to match the corresponding cutter head and ensure the stability of the excavated upper scarfing plane.
The other structure is the same as that of embodiment 1
Example 3: a three-circle shield tunneling machine for underground excavation of a subway station comprises a host and a back support in embodiment 2, wherein the back support is detachably connected with the host.
The construction method of the three-circle shield tunneling machine for underground excavation of the subway station (the structure of the three-circle shield tunneling machine is the same as that of the embodiment 2) comprises a central platform type subway station tunnel construction method and two side platform type subway station tunnel construction methods; the construction method of the central platform type subway station tunnel (as shown in fig. 13) comprises the following steps:
a1: the left small circular shield host 2 and the right small circular shield host 3 are independently constructed, and a left subway tunnel and a right subway tunnel are respectively excavated; as shown in fig. 5.
A2: when the shield machine is constructed in a subway station area, the central large circular shield host 1 is lifted to a first working well at one end of the subway station area, and the central large circular shield host 1 is respectively assembled with the left small circular shield host 2 and the right small circular shield host 3 into a three-circular shield machine in the first working well; as shown in fig. 6.
A3: the three-circle shield machine completed in the step A2 continues to tunnel, and a tunnel of the subway station area is excavated; as shown in fig. 7.
A4: after the excavation of the tunnel of the subway station area is finished, the three-circle shield machine moves to a second working well at the other end of the subway station area, the central large-circle shield host machine 1 is removed from the second working well, and the construction of the tunnel of the central platform type subway station is finished; and then respectively installing side guard plates and continuously constructing the subway travelling tunnel interval tunnel. After the construction is completed, the tracks are laid in the left subway tunnel and the right subway tunnel and in the small circular shield construction part at the side part of the station, and the platform is arranged in the large circular shield construction part at the center, as shown in fig. 8.
The construction method of the platform type subway station tunnel on two sides (as shown in figure 14) comprises the following steps:
b1: the central large circular shield main machine 1 is independently constructed, and a central line subway tunnel is excavated; as shown in fig. 9.
B2: when the shield machine is constructed in a subway station area, the left small circular shield host 2 and the right small circular shield host 3 are lifted to a first working well at one end of the subway station area, and the left small circular shield host 2, the right small circular shield host 3 and the central large circular shield host 1 are assembled into a three-circular shield machine in the first working well; as shown in fig. 10.
B3: the three-circle shield machine completed in the step B2 continues to tunnel, and a tunnel of the subway station area is excavated; as shown in fig. 11.
B4: after the excavation of the tunnel in the subway station area is finished, the three-circle shield machine moves to a second working well at the other end of the subway station area, the left small circular shield host machine 2 and the right small circular shield host machine 3 are removed in the second working well, and the construction of the tunnel in the subway station with platforms on two sides is finished. And then installing the upper side shield, and continuously constructing the subway driving tunnel interval tunnel. After the construction is completed, the track is laid in the central subway tunnel and the large circular shield construction part in the middle of the station, and the platform is arranged on the small circular shield construction parts on the two sides, as shown in fig. 12.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a three circle shield constructs host computer of undercut subway station which characterized in that: the shield structure comprises a central large circular shield host (1), a left small circular shield host (2) and a right small circular shield host (3), wherein the left small circular shield host (2) and the right small circular shield host (3) are detachably connected to two sides of the central large circular shield host (1).
2. The three-circle shield tunneling machine of the underground excavated subway station as claimed in claim 1, wherein: the left small circular shield machine (2) and the right small circular shield machine (3) are symmetrically arranged on two sides of the central large circular shield machine (1), and the outer circular shield bodies of the left small circular shield machine (2) and the right small circular shield machine (3) are intersected with the outer circular shield body of the central large circular shield machine (1) respectively.
3. The three-circle shield tunneling machine of the underground excavated subway station according to claim 1 or 2, characterized in that: left side small circle shield constructs host computer (2) and right side small circle shield and constructs host computer (3) and all include small circle blade disc (5) and small circle shield body (4) that the piecemeal set up, be equipped with small circle drive (6) in small circle shield body (4), and small circle drive (6) are connected with small circle blade disc (5), and the front end of small circle shield body (4) is equipped with small circle shield shell brim of a hat (7), and small circle shield shell brim of a hat (7) are located small circle blade disc (5) rear.
4. The three-circle shield tunneling machine of the underground excavated subway station as claimed in claim 3, wherein: the right side of the small circular shield body (4) of the left small circular shield host (2) and the left side of the small circular shield body (4) of the right small circular shield host (3) are both provided with a first side flange plate (8), and a side protection plate (9) can be detachably arranged on the first side flange plate (8).
5. The three-circle shield tunneling machine of the underground excavated subway station according to claim 1 or 4, wherein: the central great circle shield machine (1) comprises a great circle cutter head (10) and a great circle shield body (11) which is arranged in a partitioning mode, a great circle drive (12) is arranged in the great circle shield body (11), the great circle drive (12) is connected with the great circle cutter head (10), a great circle shield shell brim (13) is arranged at the front end of the great circle shield body (11), and the great circle shield shell brim (13) is located behind the great circle cutter head (10).
6. The three-circle shield tunneling machine of the underground excavated subway station as claimed in claim 5, wherein: the bilateral symmetry of great circle shield body (11) is equipped with second side flange board (14), can dismantle on second side flange board (14) and be equipped with side shield (15).
7. The three-circle shield tunneling machine of the underground excavated subway station according to claim 1 or 6, wherein: when the left small circular shield host (2) and the right small circular shield host (3) are connected to the two sides of the central large circular shield host (1), a first side flange plate (8) of the left small circular shield host (2) and a first side flange plate (8) of the right small circular shield host (3) are respectively connected with a second side flange plate (14) of the central large circular shield host (1).
8. The three-circle shield tunneling machine of the underground excavated subway station as claimed in claim 7, wherein: when the left small circular shield host (2) and the right small circular shield host (3) are connected to the two sides of the central large circular shield host (1), the small circular cutter (5) of the left small circular shield host (2) and the small circular cutter (5) of the right small circular shield host (3) are arranged in layers around the large circular cutter (10) of the central large circular shield host (1).
9. The utility model provides a three circle shield constructs machine of undercut subway station which characterized in that: the three-circle shield machine comprises the three-circle shield machine body and the rear matching set according to claim 1 or 8, wherein the three-circle shield machine body is detachably connected with the rear matching set.
10. A construction method of the three-circle shield tunneling machine for underground excavation of a subway station as claimed in claim 9, characterized in that: the method comprises a central platform type subway station tunnel construction method and two side platform type subway station tunnel construction methods; the construction method of the central platform type subway station tunnel comprises the following steps:
a1: the left small circular shield host (2) and the right small circular shield host (3) are constructed independently and respectively excavate a left subway tunnel and a right subway tunnel;
a2: when the shield machine is constructed in a subway station area, the central large circular shield host (1) is lifted to a first working well at one end of the subway station area, and the central large circular shield host (1) is respectively assembled with the left small circular shield host (2) and the right small circular shield host (3) into a three-circular shield machine in the first working well;
a3: the three-circle shield machine completed in the step A2 continues to tunnel, and a tunnel of the subway station area is excavated;
a4: after the excavation of the tunnel of the subway station area is finished, the three-circle shield machine moves to a second working well at the other end of the subway station area, the central large-circle shield main machine (1) is removed in the second working well, and the construction of the tunnel of the central platform type subway station is finished;
the construction method of the platform type subway station tunnel on two sides comprises the following steps:
b1: the central large circular shield main machine (1) is independently constructed, and a central line subway tunnel is excavated;
b2: when the shield machine is constructed in a subway station area, the left small circular shield host (2) and the right small circular shield host (3) are lifted to a first working well at one end of the subway station area, and the left small circular shield host (2), the right small circular shield host (3) and the central large circular shield host (1) are spliced into a three-circular shield machine in the first working well;
b3: the three-circle shield machine completed in the step B2 continues to tunnel, and a tunnel of the subway station area is excavated;
b4: after the excavation of the tunnel in the subway station area is finished, the three-circle shield machine moves to a second working well at the other end of the subway station area, the left small-circle shield host (2) and the right small-circle shield host (3) are removed in the second working well, and the construction of the tunnel in the two-side platform type subway station is finished.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911370484.8A CN110985018A (en) | 2019-12-26 | 2019-12-26 | Three-circle shield main machine and shield machine for underground excavation of subway station and construction method |
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| CN201911370484.8A CN110985018A (en) | 2019-12-26 | 2019-12-26 | Three-circle shield main machine and shield machine for underground excavation of subway station and construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111219193A (en) * | 2020-03-13 | 2020-06-02 | 广东水电二局股份有限公司 | Open type TBM device for preventing collapse during tunneling in weak stratum |
| CN113006805A (en) * | 2021-03-19 | 2021-06-22 | 中铁工程装备集团有限公司 | Equipment for mechanically building subway station and construction method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111219193A (en) * | 2020-03-13 | 2020-06-02 | 广东水电二局股份有限公司 | Open type TBM device for preventing collapse during tunneling in weak stratum |
| CN111219193B (en) * | 2020-03-13 | 2021-02-09 | 广东水电二局股份有限公司 | Open type TBM device for preventing collapse during tunneling in weak stratum |
| CN113006805A (en) * | 2021-03-19 | 2021-06-22 | 中铁工程装备集团有限公司 | Equipment for mechanically building subway station and construction method thereof |
| CN113006805B (en) * | 2021-03-19 | 2022-03-22 | 中铁工程装备集团有限公司 | Equipment for mechanically building subway station and construction method thereof |
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