CN113605896B - Construction method for cutting through existing vertical shaft by multi-cavity underground excavation passage - Google Patents
Construction method for cutting through existing vertical shaft by multi-cavity underground excavation passage Download PDFInfo
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- CN113605896B CN113605896B CN202111065940.5A CN202111065940A CN113605896B CN 113605896 B CN113605896 B CN 113605896B CN 202111065940 A CN202111065940 A CN 202111065940A CN 113605896 B CN113605896 B CN 113605896B
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- vertical shaft
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- 238000009412 basement excavation Methods 0.000 title claims abstract description 76
- 238000010276 construction Methods 0.000 title claims abstract description 65
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D1/00—Sinking shafts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/04—Lining shafts; Linings therefor with brick, concrete, stone, or similar building materials
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D7/00—Shaft equipment, e.g. timbering within the shaft
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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
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention provides a construction method for cutting and penetrating an existing vertical shaft through a multi-cavity underground excavation channel, wherein the multi-cavity underground excavation channel is excavated to the outer skin of the existing vertical shaft, a tunnel face is temporarily sealed, and excavation is suspended after the tunnel face is sealed; excavating and cutting a transverse channel part outside an existing shaft influence area, gradually excavating from the excavation subsection to another subsection into a bell mouth, and temporarily supporting the excavation subsection within the influence range by adopting section steel; the section steel at the bell mouth is broken in the channel which is closed into a ring, the reverse excavation channel needs to cut the subsection of the existing shaft until the section steel is attached to the outer skin of the existing shaft, and the section steel is used for supporting the adjacent section steel; and finishing the construction of the part between the residual transverse channel and the existing vertical shaft in a horn mouth excavation mode, wherein the transverse channel passes through the existing vertical shaft. The invention solves the problems of safety, construction period and the like caused by the conflict between the underground excavation channel of the multiple chambers and the existing shaft, ensures the construction safety and improves the construction efficiency.
Description
Technical Field
The invention belongs to the technical field of building structure engineering, and particularly relates to a construction method for cutting through an existing vertical shaft by using a multi-cavity undercut channel.
Background
The multi-cavity underground excavation channel is used as a subway station construction channel or a permanent structural component (such as an air duct, an entrance and an exit) of the subway station, and construction is carried out according to construction period requirements. The existing vertical shaft is used as an operation channel for subway station construction, and meanwhile operation is required according to construction period requirements. The application of the undercut channels in the current rail transit field is gradually increased, and under the premise of harsher ground conditions and no open excavation construction, the undercut method is mostly adopted for construction. And the station is excavated after the vertical shaft is required to be arranged in the underground excavation station. Under the condition of relatively tense ground conditions, the construction and the structural mode of the underground excavation transverse channel can be adopted when the station main body is connected with the station accessory and the like. At this time, the phenomenon that multiple chambers have hidden digging channels and the existing vertical shaft collide occurs. Therefore, based on the basic fact that the conflict situations of the existing vertical shaft and transverse channel structures are more and more, in order to ensure that station construction is not affected, and meanwhile, the permanent structure also meets the requirements of safety, engineering and the like, a set of building structure and construction method suitable for the situations should be sought. The method avoids the mutual influence of the underground excavation channel and the construction period of the existing vertical shaft, avoids the safety problem caused by improper treatment of construction nodes of the underground excavation channel and the existing vertical shaft, and meets the requirements of subway construction safety and rapidness.
Disclosure of Invention
In order to solve the technical problems, the embodiment of the invention provides a construction method for cutting through the existing shaft by using the multi-cavity underground excavation channel, solves the problems of safety, construction period and the like caused by conflict between the multi-cavity underground excavation channel and the existing shaft, ensures construction safety and improves construction efficiency.
In order to achieve the above object, the technical scheme adopted by the embodiment of the invention is as follows:
the embodiment of the invention also provides a construction method for cutting through the existing vertical shaft by using the multi-chamber underground excavation channel, which comprises the following steps:
step S1: firstly, excavating an influence-free area positioned in front of an existing shaft to the position of the outer skin of the existing shaft, temporarily sealing a tunnel face, and suspending excavation after sealing the tunnel face; the multi-cavity underground excavation transverse channel excavation adopts a CRD construction method, and the transverse channel section is divided into a plurality of sections;
step S2: excavating and cutting a transverse channel part outside an influence area of an existing vertical shaft, excavating to an influence-free area positioned at the rear of the existing vertical shaft, gradually excavating from the excavation part to another part in a horn mouth, and temporarily supporting the excavation part of the area positioned in the influence area behind the vertical shaft by adopting profile steel;
step S3: the section steel at the bell mouth is broken in the transverse passage which is closed into a ring, the transverse passage behind the existing shaft is reversely excavated, the subsection of the existing shaft needs to be cut, until the section steel is attached to the outer skin of the existing shaft, and the section steel is used for supporting the outer skin of the existing shaft;
step S4: the method is characterized in that the part between the residual transverse passage positioned in front of the existing vertical shaft and the existing vertical shaft is completed in a horn mouth excavation mode, and the transverse passage passes through the existing vertical shaft.
Further, if the existing shaft is a abandoned shaft, step S5 is performed after step S4: backfilling the interior of the existing vertical shaft from the bottom of the shaft to the bottom elevation of the transverse channel structure, designing the primary support structure size according to the design elevation of the underground excavation transverse channel, additionally erecting the primary support structure of the transverse channel in the shaft, breaking the existing vertical shaft in the cutting crossing influence range in the erection process, designing the primary support structure of the transverse channel into a ring according to the design, continuing breaking the existing vertical shaft in the cutting crossing influence range, completing the secondary lining structure of the multi-cavity underground excavation transverse channel, and completing the construction of the transverse channel.
Further, if the abandoned existing shaft is provided with a secondary lining structure, when the existing shaft is backfilled to the elevation at the bottom of the underground excavation transverse channel primary support structure after the cutting and crossing are completed, the secondary lining structure and the primary support structure of the shaft are broken, and the transverse channel primary support structure is erected in the shaft in a supplementary mode.
Further, the cross section of the multi-cavity underground excavation transverse channel is divided into six parts, and the arrangement mode is that the cross section is divided into an upper layer, a lower layer and a left layer.
The invention has the following beneficial effects:
the construction method for cutting the multi-cavity underground excavation passage through the existing vertical shaft provided by the invention has the advantages that the transverse passage passes through the existing vertical shaft, the normal construction is performed through the rear transverse passage, and the normal function of the existing vertical shaft is not influenced. When the existing vertical shaft is in use, the construction method can meet the functional requirements of the vertical shaft in use, and can also meet the requirements of the construction period, the safety quality and the safety of the underground excavation channel of multiple caverns. When the existing shaft is abandoned, backfilling is carried out from the bottom of the shaft to the bottom elevation of the transverse channel structure, the existing shaft in the cutting and crossing influence range is broken, and the transverse channel primary support and the secondary lining structure are erected in the shaft in a supplementary mode according to the primary support size of the transverse channel design.
The design construction method solves the problems that the underground excavation channel of the multiple chambers meets the cutting crossing structure of the existing shaft and the construction is extremely difficult, ensures the normal construction of self engineering, and simultaneously, the function of the shaft is not influenced. The invention solves the problems of construction period lag and structural safety risk increase caused by conflict between the existing underground excavation transverse passage and the existing vertical shaft due to difficult land utilization or other objective conditions. The construction method meets the functional requirement and the structural safety of the vertical shaft in use, and meets the construction progress requirement of the underground excavation channel of multiple chambers.
The invention solves the problems that the traditional multi-chamber underground excavation channel and the existing shaft are cut and penetrated, the transverse channel can be constructed only after the function of the existing shaft is completed and backfilled, thereby prolonging the construction period and reducing the construction efficiency. Aiming at the cutting and crossing of the multi-cavity underground excavation channel and the existing vertical shaft, the multi-cavity underground excavation channel and the existing vertical shaft can be constructed simultaneously, the safety of the multi-cavity underground excavation channel and the existing vertical shaft is guaranteed, the construction efficiency is improved, and the construction period is shortened. The invention is suitable for all multi-chamber underground excavation channels and the cutting and traversing construction of the existing vertical shaft, and has wide application range.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
FIG. 1 is a plan view of a multi-chamber undercut channel and existing shaft cut-through structure provided by an embodiment of the present invention;
FIG. 2 is a plan view of a multi-chamber undercut channel at the end of step one, an existing shaft cut-through structure provided in an embodiment of the present invention;
FIG. 3 is a section view taken from 1-1 of FIG. 2;
FIG. 4 is a plan view of a multi-chamber underground excavation channel and an existing shaft cutting traversing structure at the end of the second step provided by the embodiment of the present invention;
FIG. 5 is a cross-sectional view taken along line 2-2 of FIG. 4;
FIG. 6 is a section view taken along line 3-3 of FIG. 4;
FIG. 7 is a plan view of a multi-chamber undercut channel at the end of step three, an existing shaft cut-through structure provided by an embodiment of the present invention;
FIG. 8 is a plan view of a multi-chamber undercut channel at the end of step four, an existing shaft cut-through structure provided by an embodiment of the present invention;
fig. 9 is a plan view of a multi-chamber underground excavation channel and an existing shaft cutting traversing structure at the end of the fifth step provided by the embodiment of the present invention.
Reference numerals illustrate:
100. the existing vertical shaft; 200. multiple chambers are dug in a hidden way.
Detailed Description
The present invention will be described in detail below with reference to the drawings and the specific embodiments, so that those skilled in the art can better understand the technical solutions of the present invention.
The embodiment also provides a construction method for cutting through the existing vertical shaft by using the multi-chamber undercut channel, as shown in fig. 1 to 9, the method comprises the following steps:
step S1: firstly, excavating an influence-free area (i.e. area I) positioned in front of the existing vertical shaft 100 to the outer skin of the existing vertical shaft 100, temporarily sealing the tunnel face, and suspending excavation after sealing the tunnel face, as shown in fig. 2; the multi-cavity underground excavation transverse passage 200 is excavated by adopting a CRD construction method, the cross section of the transverse passage is divided into six parts, the arrangement mode is that the upper layer, the lower layer and the left and right layers are arranged, the standard primary support cross section of the multi-cavity underground excavation transverse passage 200 is shown as figure 3, and the excavation procedure is as follows: (1) - (2) - (3) - (4) - (5) - (6).
Step S2: as shown in fig. 4, the section of the horizontal passage outside the influence area of the existing shaft 100, i.e., the area ii, is excavated as shown in fig. 5, to the influence-free area located behind the existing shaft 100, then the horn-mouth excavation is gradually made from the present excavation section to the other section, and the excavation section of the area located in the influence area behind the existing shaft 100 is temporarily supported by using section steel, the section being shown in fig. 6.
Step S3: the section steel at the bell mouth is broken in the transverse passage which is already closed into a ring, the transverse passage behind the existing vertical shaft 100 is reversely excavated, the subsection of the existing vertical shaft 100 needs to be cut, the section steel is adopted to support the section steel at the position close to the outer skin of the existing vertical shaft 100, and the excavation range is a zone III, as shown in fig. 7.
Step S4: the remaining lateral passages located in front of the existing shaft 100 and the existing shaft 100 are partially excavated by means of a flare, and the excavated area is an iv area, as shown in fig. 8, and the lateral passages pass through the existing shaft 100.
The construction method solves the structural conflict between the existing vertical shaft 100 and the multi-cavity underground excavation transverse passage 200, and can meet the functional requirements of the vertical shaft in use and the requirements of the construction period, the safety quality and the safety of the multi-cavity underground excavation passage when the existing vertical shaft 100 is the vertical shaft in use.
Further, if the existing shaft 100 is a abandoned shaft, a step S5 is performed after the step S4.
Step S5: backfilling the interior of the existing vertical shaft 100 from the bottom of the shaft to the bottom elevation of the transverse channel structure, designing the size of the primary support structure according to the design elevation of the underground excavation transverse channel, additionally erecting the primary support structure of the transverse channel in the shaft, breaking the existing vertical shaft 100 in the cutting crossing influence range in the erection process, designing the primary support structure of the transverse channel into a ring according to the design, continuing breaking the existing vertical shaft 100 in the cutting crossing influence range, completing the underground excavation transverse channel secondary lining structure of the multi-cavity, and completing the construction of the transverse channel, as shown in figure 9.
Further, the construction method for cutting through the existing shaft with the multi-cavity undercut channel is also suitable for cutting through the shaft with the secondary lining structure, after cutting through is completed, when backfilling to the elevation position of the primary support bottom of the undercut channel in the abandoned shaft, the secondary lining and primary support structure of the shaft are broken, and the primary support structure of the transverse channel is erected in the shaft in a supplementary mode.
Further, the existing shaft 100 has dimensions of 5m long by 8m wide; the width of the transverse channel is 6-8 m, and the height is 9-12 m; the width of the sub-excavation is 3-4 m, and the height is 3-4 m.
The multi-cavity underground excavation passage cuts through the existing vertical shaft, can be partially cut, can also completely contain the cutting, if the condition that the cutting is contained is generated, the cutting through problem can be divided into left and right cutting through, and the rest is executed according to the steps.
The construction method for cutting and traversing the existing vertical shaft by the multi-cavity underground excavation channel is also applicable to the construction method for cutting and traversing the existing vertical shaft by the single-cavity underground excavation channel.
According to the technical scheme, the construction method for cutting and crossing the existing shaft through the multi-cavity underground excavation passage is provided, the problem that the multi-cavity underground excavation passage meets the cutting and crossing structure of the existing shaft and is extremely constructed is solved, normal construction of self engineering is guaranteed, and meanwhile, the shaft function is not affected. The invention solves the problems of construction period lag and structural safety risk increase caused by conflict between the existing underground excavation transverse passage and the existing vertical shaft due to difficult land utilization or other objective conditions. The construction method meets the functional requirement and the structural safety of the vertical shaft in use, and meets the construction progress requirement of the underground excavation channel of multiple chambers.
The method solves the problems that the traditional multi-chamber underground excavation channel and the existing shaft are cut and penetrated, the transverse channel can be constructed only after the existing shaft is completed in function and backfilled, so that the construction period is prolonged, and the construction efficiency is reduced; the embodiment aims at cutting and crossing a multi-cavity underground excavation channel and an existing vertical shaft, the two can be constructed simultaneously, and the structural safety of the two is ensured. And the construction efficiency is improved, and the construction period is shortened. The embodiment is suitable for all multi-chamber underground excavation channels and the cutting and traversing construction of the existing vertical shaft, and has wide application range.
The embodiments of the present invention have been described in detail by way of examples, but the descriptions are merely exemplary of the embodiments of the present invention and are not to be construed as limiting the scope of the embodiments of the present invention. The protection scope of the embodiments of the invention is defined by the claims. In the technical scheme of the embodiment of the invention, or under the inspired by those skilled in the art, similar technical schemes are designed within the spirit and the protection scope of the embodiment of the invention, or equivalent changes and improvements made to the application scope are still included in the patent coverage protection scope of the embodiment of the invention.
Claims (2)
1. The construction method for cutting through the existing vertical shaft by using the multi-cavity underground excavation channel is characterized by comprising the following steps:
step S1: firstly, excavating an influence-free area positioned in front of an existing shaft to the position of the outer skin of the existing shaft, temporarily sealing a tunnel face, and suspending excavation after sealing the tunnel face; the multi-cavity underground excavation transverse channel excavation adopts a CRD construction method, and the transverse channel section is divided into a plurality of sections;
step S2: excavating and cutting a transverse channel part outside an influence area of an existing vertical shaft, excavating to an influence-free area positioned at the rear of the existing vertical shaft, gradually excavating from the excavation part to another part in a horn mouth, and temporarily supporting the excavation part of the area positioned in the influence area behind the vertical shaft by adopting profile steel;
step S3: the section steel at the bell mouth is broken in the transverse passage which is closed into a ring, the transverse passage behind the existing shaft is reversely excavated, the subsection of the existing shaft needs to be cut, until the section steel is attached to the outer skin of the existing shaft, and the section steel is used for supporting the outer skin of the existing shaft;
step S4: the method comprises the steps that a part between a residual transverse passage positioned in front of an existing vertical shaft and the existing vertical shaft is completed in a horn mouth excavation mode, and the transverse passage passes through the existing vertical shaft;
the existing shaft is a abandoned shaft, and the step S5 is implemented after the step S4: backfilling the interior of the existing shaft from the bottom of the shaft to the bottom elevation of the transverse channel structure, designing the primary support structure size according to the design elevation of the underground excavation transverse channel, and additionally erecting the primary support structure of the transverse channel in the shaft, wherein in the erection process, the existing shaft in the cutting crossing influence range is broken, the primary support of the transverse channel is designed into a ring according to the design, and the existing shaft in the cutting crossing influence range is continuously broken, so that the secondary lining structure of the multi-cavity underground excavation transverse channel is completed, and the construction of the transverse channel is completed;
the abandoned existing vertical shaft is provided with a secondary lining structure, when the existing vertical shaft is backfilled to the elevation position at the bottom of the underground excavation transverse channel primary support structure after the cutting crossing is completed, the secondary lining structure and the primary support structure of the vertical shaft are broken, and the transverse channel primary support structure is erected in the well in a supplementary mode.
2. The construction method for cutting through the existing vertical shaft by using the multi-cavity underground excavation channel as claimed in claim 1, wherein the cross section of the multi-cavity underground excavation channel is divided into six parts, and the arrangement mode is three layers, namely an upper layer, a lower layer and a left layer and a right layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111065940.5A CN113605896B (en) | 2021-09-15 | 2021-09-15 | Construction method for cutting through existing vertical shaft by multi-cavity underground excavation passage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111065940.5A CN113605896B (en) | 2021-09-15 | 2021-09-15 | Construction method for cutting through existing vertical shaft by multi-cavity underground excavation passage |
Publications (2)
| Publication Number | Publication Date |
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| CN113605896A CN113605896A (en) | 2021-11-05 |
| CN113605896B true CN113605896B (en) | 2023-09-05 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002070471A (en) * | 2000-09-01 | 2002-03-08 | Toyo Constr Co Ltd | Construction method for enlarging cross section of existing tunnel |
| CN205400736U (en) * | 2016-03-28 | 2016-07-27 | 北京市政建设集团有限责任公司 | CRD undercut tunnel utility tunnel |
| CN207714364U (en) * | 2017-10-16 | 2018-08-10 | 广州地铁设计研究院有限公司 | System is underpined in the passive supplement in existing building basis and hole |
| CN110847206A (en) * | 2019-11-14 | 2020-02-28 | 中建八局轨道交通建设有限公司 | Construction method for newly-built subway tunnel to penetrate existing bridge piles |
| CN211340827U (en) * | 2019-11-28 | 2020-08-25 | 中建八局轨道交通建设有限公司 | Structure for newly building bridge by passing through existing bridge piles in subway tunnel |
| CN111997632A (en) * | 2020-07-22 | 2020-11-27 | 中铁第四勘察设计院集团有限公司 | Method for shield to pass through vertical shaft |
| CN212803226U (en) * | 2020-09-07 | 2021-03-26 | 中铁第四勘察设计院集团有限公司 | Subway station spanning existing tunnel |
| CN112832806A (en) * | 2021-01-28 | 2021-05-25 | 西安理工大学 | Segment breaking and stratum anti-collapse construction method for shield-well-after-well construction |
-
2021
- 2021-09-15 CN CN202111065940.5A patent/CN113605896B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002070471A (en) * | 2000-09-01 | 2002-03-08 | Toyo Constr Co Ltd | Construction method for enlarging cross section of existing tunnel |
| CN205400736U (en) * | 2016-03-28 | 2016-07-27 | 北京市政建设集团有限责任公司 | CRD undercut tunnel utility tunnel |
| CN207714364U (en) * | 2017-10-16 | 2018-08-10 | 广州地铁设计研究院有限公司 | System is underpined in the passive supplement in existing building basis and hole |
| CN110847206A (en) * | 2019-11-14 | 2020-02-28 | 中建八局轨道交通建设有限公司 | Construction method for newly-built subway tunnel to penetrate existing bridge piles |
| CN211340827U (en) * | 2019-11-28 | 2020-08-25 | 中建八局轨道交通建设有限公司 | Structure for newly building bridge by passing through existing bridge piles in subway tunnel |
| CN111997632A (en) * | 2020-07-22 | 2020-11-27 | 中铁第四勘察设计院集团有限公司 | Method for shield to pass through vertical shaft |
| CN212803226U (en) * | 2020-09-07 | 2021-03-26 | 中铁第四勘察设计院集团有限公司 | Subway station spanning existing tunnel |
| CN112832806A (en) * | 2021-01-28 | 2021-05-25 | 西安理工大学 | Segment breaking and stratum anti-collapse construction method for shield-well-after-well construction |
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| CN113605896A (en) | 2021-11-05 |
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