CN104712342A - Method of providing working plane for station expanding excavation construction in large-diameter shield tunnel - Google Patents
Method of providing working plane for station expanding excavation construction in large-diameter shield tunnel Download PDFInfo
- Publication number
- CN104712342A CN104712342A CN201510058859.2A CN201510058859A CN104712342A CN 104712342 A CN104712342 A CN 104712342A CN 201510058859 A CN201510058859 A CN 201510058859A CN 104712342 A CN104712342 A CN 104712342A
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- China
- Prior art keywords
- station
- shield tunnel
- way
- transverse passage
- diameter shield
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/003—Linings or provisions thereon, specially adapted for traffic tunnels, e.g. with built-in cleaning devices
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The invention relates to a method of providing a working plane for station expanding excavation construction in a large-diameter shield tunnel. After the construction of a bottom longitudinal beam, a middle partition wall and a top longitudinal beam in the large-diameter shield tunnel of a station portion is completed, according to the requirement of the process, two to three annular tube pieces arranged on the two side walls of the large-diameter shield tunnel are removed in the longitudinal direction of the tunnel at intervals, a soil body is excavated perpendicular to the axes of the shield tunnel to the positions of small guide adits arranged on two sides of a station, then the soil body is excavated reversely and upwards, a construction cross passageways of the expanding excavation station is formed, the set number of the cross passageways is arranged according to a schedule requirement flexibly, and intervals of the cross passageways are larger than 30 m; and then the cross passageways are used for serving as the working plane where the single-layer subway station is formed by expansively excavating the large-diameter shield tunnel. Required space used for letting an earthwork, materials, equipment and workers go in and out of the excavating working plane is provided by relaying on the large-diameter shield tunnel, and the difficulty that the station expanding excavation work has no construction passageway under the condition of being difficult in ground land occupation can be preferably resolved.
Description
[technical field]
The present invention relates to a kind of construction method of subway station, to be specifically related in a kind of large diameter shield tunnel, for station Enlargement excavation provides the method for the scope of operation, belong to railway traffic engineering technical field.
[background technology]
After the one-tunnel two-tracks vehicular tunnel adopting the through interval of large-diameter shield and station, generally need the scope of operation utilizing the ventilating shaft of termination, station and air channel to dig as station structure.But ground, station often lead due to traffic change, the reason such as pipeline is torn down and reconstructed, construction area, be difficult to provide ventilating shaft and construction plant, air channel in time, cause digging station operation and not construct passage, the station duration can not meet the demands.If simultaneously station digs operation and just utilizes merely ventilating shaft and air channel as the scope of operation, can exist and dig the problem that the scope of operation is few, efficiency of construction is low.
Therefore, for solving the problems of the technologies described above, necessaryly to provide in a kind of large diameter shield tunnel of innovation as station Enlargement excavation provides the method for the scope of operation, to overcome described defect of the prior art.
[summary of the invention]
For solving the problem, the object of the present invention is to provide in a kind of large diameter shield tunnel as station Enlargement excavation provides the method for the scope of operation, it utilizes the advantage that in large shield tunnel, space is open, utilize the job platform that large shield tunnel digs as station, and remove the part section of jurisdiction of shield structure two side, excavation transverse passage-way, forms the construction passage digging station structure.
For achieving the above object, the technical scheme that the present invention takes is: for station Enlargement excavation provides the method for the scope of operation in a kind of large diameter shield tunnel, it comprises the steps:
(1) along large diameter shield tunnel longitudinally, transverse passage-way is set at interval of a segment distance, according to construction speed arrangement, determines quantity and the setting position of transverse passage-way, the station bottom girder at construction transverse passage-way position, mid-board and top longeron;
(2) piecemeal abolishes the 2-3 endless tube sheet with transverse passage-way crossover sites;
(3) vertical large diameter shield tunnel axis, adopts short benching tunnelling method tunneling transverse passage-way to the pilot tunnel position, side of both sides, station;
(4) from the little pilot tunnel in both sides, along tunnel axis, to transverse passage-way top residue, the soil body is counter draws and dig, complete arch, the station soil excavation at transverse passage-way position, and arch preliminary bracing structure of constructing, preliminary bracing structure one end is supported on the Guan Liang in little pilot tunnel, and the bored pile by Guan Liang load passed in pilot tunnel, the other end is supported on shield tunnel and binds on block, and by block section of jurisdiction of binding, load is passed to top longeron and mid-board;
(5) abolish the section of jurisdiction of block both sides of binding, arch, station two lining structure at construction transverse passage-way position, form the construction transverse passage-way that station structure digs operation.
In large diameter shield tunnel of the present invention for station Enlargement excavation provides the method for the scope of operation be further: described step 1) in, the distance at transverse passage-way interval is greater than 30m.
In large diameter shield tunnel of the present invention for station Enlargement excavation provides the method for the scope of operation be further: described step 2) in, before abolishing section of jurisdiction, carry out slip casting to stratum behind, section of jurisdiction to add, and in large shield tunnel, the adjacent tubes sheet erection of abolishing position is supported.
For station Enlargement excavation provides the method for the scope of operation also to can be: described step 3 in large diameter shield tunnel of the present invention) in, length of bench is not more than 0.75m, stays Core Soil.
Compared with prior art, the present invention has following beneficial effect:
(1) to lead due to traffic when ground change, take over the land for use occupation of land and pipeline change and the reason such as to move when causing constructing ventilating shaft and air channel on time, station digs operation and not to construct passage, for guaranteeing the station duration, the present invention can be utilized to form station structure Enlargement excavation passage as early as possible, can realize completely when not taking place, ground station structure " secretly doing ", protecting the realization of constructing aims;
(2) because the large shield tunnel section of diameter is large, can as digging station operation platform, and material stored, vehicle meeting and turn around all to have living space, station construction arrangement is very flexible.And the space required for main equipment operation can be provided;
(3) for the erect-position instability at station or when restricting by removing, large shield structure first can be adopted to pass through, when conditions being possessed, directly utilize large shield tunnel as digging job platform again.Employing the present invention, can reserve station structure when subway is planned for the location of condition difficulty and erect-position is flexible, unrestricted, according to actual conditions determination erect-position.
In sum, when ground condition of taking up an area is the devil, transverse passage-way can be opened in large diameter shield tunnel, open up station work plane, work car station owner body structure, " secretly the doing " at station can be realized completely, reduce the construction area of Station.Simultaneously because shield tunnel section is large, be the large platform that later stage shield structure digs station operation, can provide the space required for main equipment operation, mechanization degree is high, and corresponding efficiency of construction have also been obtained raising.
[accompanying drawing explanation]
Fig. 1 is along large diameter shield tunnel longitudinally, arranges transverse passage-way at interval of a segment distance, and the schematic diagram of the station bottom girder at transverse passage-way position of constructing, mid-board and top longeron.
Fig. 2 is that piecemeal abolishes the 2-3 endless tube sheet with transverse passage-way crossover sites, and to the schematic diagram that the erection of adjacent tubes sheet supports in large shield tunnel.
Fig. 3 is vertical large diameter shield tunnel axis, adopts short benching tunnelling method tunneling transverse passage-way to the schematic diagram of the pilot tunnel position, side of both sides, station.
Fig. 4 is from the little pilot tunnel in both sides, along tunnel axis, to transverse passage-way top residue, the soil body is counter draws and dig, and arch preliminary bracing structure of constructing, preliminary bracing structure one end is supported on the Guan Liang in little pilot tunnel, and the bored pile by Guan Liang load passed in pilot tunnel, the other end is supported on shield tunnel and binds on block, and load is passed to the schematic diagram of top longeron and mid-board by block section of jurisdiction of binding.
Fig. 5 is the section of jurisdiction of abolishing block both sides of binding, arch, station two lining structure at construction transverse passage-way position, forms the schematic diagram that station structure digs the construction transverse passage-way of operation.
[detailed description of the invention]
Refer to shown in Figure of description 1 to accompanying drawing 5, the present invention in a kind of large diameter shield tunnel for station Enlargement excavation provides the method for the scope of operation, it comprises the steps:
1), as shown in Figure 1, along large diameter shield tunnel 1 longitudinally, arrange transverse passage-way 2 at interval of a segment distance, the distance at transverse passage-way interval is determined according to duration schedule requirement, generally should be greater than 30m.According to construction speed arrangement, determine quantity and the setting position of transverse passage-way, the construction station bottom girder 5 at transverse passage-way position, mid-board 4 and top longeron 3;
2), as shown in Figure 2, piecemeal abolishes the 2 endless tube sheets 6 with transverse passage-way crossover sites.Before abolishing section of jurisdiction 6, the method for advanced deep hole grouting is adopted to carry out grouting and reinforcing to stratum behind, section of jurisdiction, and to the adjacent tubes sheet erection support 7 of abolishing position in large shield tunnel;
3), as shown in Figure 3, vertical large diameter shield tunnel axis, adopt short benching tunnelling method tunneling transverse passage-way to the pilot tunnel position, side 8 of both sides, station, length of bench is not more than 0.75m, stays Core Soil, tops bar and sets lock pin anchor tube, and slip casting;
4), as shown in Figure 4, from in both sides pilot tunnel 8, along tunnel axis, to transverse passage-way top residue, the soil body is counter draws and dig, and completes arch, the station soil excavation at transverse passage-way position, and arch preliminary bracing structure 9 of constructing, preliminary bracing structure one end is supported on the hat beam 10 in little pilot tunnel, and the bored pile 11 by Guan Liang load passed in pilot tunnel, the other end is supported on shield tunnel and binds on block 12, and by block section of jurisdiction of binding, load is passed to top longeron and mid-board;
5), as shown in Figure 5, abolish the section of jurisdiction 13 of block both sides of binding, arch, station two lining structure 14 at construction transverse passage-way position, form the construction transverse passage-way that station structure digs operation.
Above detailed description of the invention is only the preferred embodiment of this creation, and not in order to limit this creation, any amendment made within all spirit in this creation and principle, equivalent replacement, improvement etc., within the protection domain that all should be included in this creation.
Claims (4)
1. in large diameter shield tunnel for station Enlargement excavation provides a method for the scope of operation, it is characterized in that: comprise the steps:
(1) along large diameter shield tunnel longitudinally, transverse passage-way is set at interval of a segment distance, according to construction speed arrangement, determines quantity and the setting position of transverse passage-way, the station bottom girder at construction transverse passage-way position, mid-board and top longeron;
(2) piecemeal abolishes the 2-3 endless tube sheet with transverse passage-way crossover sites;
(3) vertical large diameter shield tunnel axis, adopts short benching tunnelling method tunneling transverse passage-way to the pilot tunnel position, side of both sides, station;
(4) from the little pilot tunnel in both sides, along tunnel axis, to transverse passage-way top residue, the soil body is counter draws and dig, complete arch, the station soil excavation at transverse passage-way position, and arch preliminary bracing structure of constructing, preliminary bracing structure one end is supported on the Guan Liang in little pilot tunnel, and the bored pile by Guan Liang load passed in pilot tunnel, the other end is supported on shield tunnel and binds on block, and by block section of jurisdiction of binding, load is passed to top longeron and mid-board;
(5) abolish the section of jurisdiction of block both sides of binding, arch, station two lining structure at construction transverse passage-way position, form the construction transverse passage-way that station structure digs operation.
2. in large diameter shield tunnel as claimed in claim 1 for station Enlargement excavation provides the method for the scope of operation, it is characterized in that: described step 1) in, the distance at transverse passage-way interval is greater than 30m.
3. in large diameter shield tunnel as claimed in claim 1 for station Enlargement excavation provides the method for the scope of operation, it is characterized in that: described step 2) in, before abolishing section of jurisdiction, carry out slip casting to stratum behind, section of jurisdiction to add, and in large shield tunnel, the adjacent tubes sheet erection of abolishing position is supported.
4. in large diameter shield tunnel as claimed in claim 1 for station Enlargement excavation provides the method for the scope of operation, it is characterized in that: described step 3) in, length of bench is not more than 0.75m, stays Core Soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510058859.2A CN104712342A (en) | 2015-02-04 | 2015-02-04 | Method of providing working plane for station expanding excavation construction in large-diameter shield tunnel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510058859.2A CN104712342A (en) | 2015-02-04 | 2015-02-04 | Method of providing working plane for station expanding excavation construction in large-diameter shield tunnel |
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| CN104712342A true CN104712342A (en) | 2015-06-17 |
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| CN201510058859.2A Pending CN104712342A (en) | 2015-02-04 | 2015-02-04 | Method of providing working plane for station expanding excavation construction in large-diameter shield tunnel |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927233A (en) * | 2016-05-31 | 2016-09-07 | 中铁第四勘察设计院集团有限公司 | Large-span cross aisle building method applied to segmental lining tunnels |
| CN107355226A (en) * | 2017-08-23 | 2017-11-17 | 中国电建集团成都勘测设计研究院有限公司 | TBM construction tunnel fault belts hole section processing structure |
| CN110219679A (en) * | 2019-07-22 | 2019-09-10 | 西南交通大学 | A kind of soft stratum tunnel lining structure |
| CN110241850A (en) * | 2019-05-27 | 2019-09-17 | 广东省重工建筑设计院有限公司 | The construction method of open-cut station and large span Duplex Process bored tunnel interface |
| CN110593893A (en) * | 2019-11-01 | 2019-12-20 | 中建八局轨道交通建设有限公司 | Main body structure construction method and system for intersection of main tunnel and construction transverse channel |
| 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 |
-
2015
- 2015-02-04 CN CN201510058859.2A patent/CN104712342A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105927233A (en) * | 2016-05-31 | 2016-09-07 | 中铁第四勘察设计院集团有限公司 | Large-span cross aisle building method applied to segmental lining tunnels |
| CN105927233B (en) * | 2016-05-31 | 2018-07-10 | 中铁第四勘察设计院集团有限公司 | Large span transverse passage-way construction method applied to pipe-plate lining tunnel |
| CN107355226A (en) * | 2017-08-23 | 2017-11-17 | 中国电建集团成都勘测设计研究院有限公司 | TBM construction tunnel fault belts hole section processing structure |
| CN107355226B (en) * | 2017-08-23 | 2023-08-22 | 中国电建集团成都勘测设计研究院有限公司 | Broken area hole section processing structure of TBM construction tunnel fault |
| CN110241850A (en) * | 2019-05-27 | 2019-09-17 | 广东省重工建筑设计院有限公司 | The construction method of open-cut station and large span Duplex Process bored tunnel interface |
| CN110219679A (en) * | 2019-07-22 | 2019-09-10 | 西南交通大学 | A kind of soft stratum tunnel lining structure |
| CN110593893A (en) * | 2019-11-01 | 2019-12-20 | 中建八局轨道交通建设有限公司 | Main body structure construction method and system for intersection of main tunnel and construction transverse channel |
| CN110593893B (en) * | 2019-11-01 | 2024-04-12 | 中建八局轨道交通建设有限公司 | Main body structure construction method and system at intersection of main tunnel and construction transverse channel |
| 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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Application publication date: 20150617 |
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