CN204457784U - Large-diameter shield in a kind of tunneling air channel receives and starting well - Google Patents
Large-diameter shield in a kind of tunneling air channel receives and starting well Download PDFInfo
- Publication number
- CN204457784U CN204457784U CN201520080067.0U CN201520080067U CN204457784U CN 204457784 U CN204457784 U CN 204457784U CN 201520080067 U CN201520080067 U CN 201520080067U CN 204457784 U CN204457784 U CN 204457784U
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- China
- Prior art keywords
- air channel
- ring beam
- shield
- supporting
- starting well
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Abstract
The large-diameter shield that the utility model relates in a kind of tunneling air channel receives and starting well, and it comprises top, air channel ring beam, supporting and protection structure, base plate, sidewall structure, side wall ring beam and bottom, air channel ring beam; Wherein, top, described air channel ring beam is arranged on the top of supporting and protection structure; In described supporting and protection structure, form large shield structure receive and starting well; Bottom, described air channel ring beam is arranged on the bottom of supporting and protection structure; Described side wall ring beam is arranged on the both sides of supporting and protection structure; Described sidewall structure is positioned at the outside of side wall ring beam; Described base plate is positioned at the bottom of bottom, air channel ring beam.The object that large-diameter shield reception in tunneling air channel of the present utility model and starting well can realize " when the air channel structure of termination, station is when can not complete construction before large-diameter shield arrives on schedule; the soil excavation and the strengthened ring beam structure that first complete position, shield crossing air channel are built; form shield structure and receive and starting well; allow shield structure pass through in advance ", does not need reduction shield driving speed or shutdown to wait for.
Description
[technical field]
The utility model relates to a kind of shield structure and receives and starting well, and the large-diameter shield be specifically related in a kind of tunneling air channel receives and starting well, belongs to railway traffic engineering technical field.
[background technology]
Subway sectional tunnel and station all adopt large-diameter shield to tunnel, and once form one-tunnel two-tracks tunnel, station digs on shield tunnel basis, and this construction method and planned management of project better can solve subway engineering conventional at present and prepare run into difficulty.But adopt this planned management of project mode generally all to require to complete the air channel structure construction at two ends, station before arrival station, possess the condition receiving shield structure or shield crossing is provided.
Because air channel is tunneling big cross section high side wall structure, need the long period just can complete construction, if removed by ground, pipeline changes the factor such as to move and restricts, ventilating shaft and air channel structure may can not complete structure construction before arrival, shield structure can only slow down driving speed or wait, affect the realization of shield-tunneling construction efficiency and " hole leads to target ", and the Enlargement excavation duration of station agent structure also can be subject to corresponding impact.
Therefore, for solving the problems of the technologies described above, necessaryly provide large-diameter shield in a kind of tunneling air channel of innovation to receive and starting well, to overcome described defect of the prior art.
[utility model content]
For solving the problem, the purpose of this utility model is to provide the large-diameter shield in a kind of tunneling air channel to receive and starting well, and it receives and the condition started for providing large-diameter shield in the air channel not yet completing air channel entire infrastructure construction.
For achieving the above object, the technical scheme that the utility model is taked is: the large-diameter shield in a kind of tunneling air channel receives and starting well, and it comprises top, air channel ring beam, supporting and protection structure, base plate, sidewall structure, side wall ring beam and bottom, air channel ring beam; Wherein, top, described air channel ring beam is arranged on the top of supporting and protection structure; Form large shield structure in described supporting and protection structure to receive and starting well; Bottom, described air channel ring beam is arranged on the bottom of supporting and protection structure; Described side wall ring beam is arranged on the both sides of supporting and protection structure; Described sidewall structure is positioned at the outside of side wall ring beam; Described base plate is positioned at the bottom of bottom, air channel ring beam.
Large-diameter shield in tunneling air channel of the present utility model receives and starting well is further: described supporting and protection structure adopts grid concrete spraying support structure, and grid Pin distance is 50cm ~ 75cm.
Compared with prior art; the utility model has following beneficial effect: the object that the large-diameter shield reception in tunneling air channel of the present utility model and starting well can realize " when the air channel structure of termination, station is when can not complete construction before large-diameter shield arrives on schedule; the soil excavation and the strengthened ring beam structure that first complete position, shield crossing air channel are built; form shield structure and receive and starting well; allow shield structure pass through in advance ", does not need reduction shield driving speed or shutdown to wait for.Guarantee shield driving not by the restriction of air channel, station construction; Whole planned management of project is served as theme with running tunnel, can realize the target of " hole leads to " as early as possible.
[accompanying drawing explanation]
Fig. 1 be construction step 1 of the present utility model) working drawing.
Fig. 2-1 be construction step 2 of the present utility model) working drawing.
Fig. 2-2 is Fig. 2 sectional drawings along A-A.
Fig. 3-1 be construction step 3 of the present utility model) working drawing.
Fig. 3-2 is Fig. 2 sectional drawings along B-B.
Fig. 4 be construction step 4 of the present utility model) working drawing.
Fig. 5 is that large-diameter shield in tunneling air channel of the present utility model receives and the structural representation of starting well.
[detailed description of the invention]
Refer to shown in Figure of description 5, the utility model is that the large-diameter shield in a kind of tunneling air channel receives and starting well, and it is made up of a few parts such as top, air channel ring beam 10, supporting and protection structure 11, base plate 13, sidewall structure 14, side wall ring beam 15 and bottom, air channel ring beams 16.
Wherein, top, described air channel ring beam 10 is arranged on the top of supporting and protection structure 11.
Form large shield structure in described supporting and protection structure 10 to receive and starting well 12, this supporting and protection structure 10 adopts grid concrete spraying support structure, and grid Pin distance is 50cm ~ 75cm
Bottom, described air channel ring beam 16 is arranged on the bottom of supporting and protection structure 11.Described side wall ring beam 15 is arranged on the both sides of supporting and protection structure 10.
Described sidewall structure 14 is positioned at the outside of side wall ring beam 15.Described base plate 13 is positioned at the bottom of bottom, air channel ring beam 16.
Large-diameter shield in tunneling air channel of the present utility model receive and the Specific construction step of starting well as follows:
1), as shown in Figure 1, before arrival, grouting and reinforcing 2 is carried out to the soil body of shield structure turnover both sides, air channel 1, improve the self-stable ability of the soil body, can adopt the method that in surface grout injection and little pilot tunnel, slip casting combines, the soil strength index after the scope of grouting and reinforcing and slip casting should be determined by calculating under the loading condition considering shield crossing operating mode.
2), as shown in Figure 2, using vertical shaft 3 as construction passage, ingate is opened at shaft wall after grouting and reinforcing is carried out to the soil body at ingate position, the three Pin grid solid matters at ingate position.By the little pilot tunnel 4 of both sides, shaft excavation air channel, the distance being not less than 5m should be kept between two little pilot tunnels, little pilot tunnel adopts short benching tunnelling method to excavate, stay Core Soil, the step pitch of each excavation is 0.75m, and often before circulation excavation, the reply arch soil body adopts advanced tubule to carry out grouting and reinforcing, and grouting serous fluid adopts cement paste, if stratum is moisture, answer cementing water glass dual slurry.
3), as shown in Figure 3, castinplace pile 5 in the little pilot tunnel 4 in both sides, pilot tunnel through rear construction air channel and stake apical cap beam 6, castinplace pile 5 can adopt the mode of mechanical hole building or manually digging hole, the castinplace pile diameter of mechanical hole building is generally 800mm, and the castinplace pile diameter of manually digging hole is generally 1000mm or 1200mm.Then excavate air channel middle drift 9 cubic metres of earth and perform arch preliminary bracing 7 and arch inner lining structure 8, middle drift adopts short benching tunnelling method to excavate, and stay Core Soil, according to vault and Ground Subsidence Monitoring result, interim vertical supporting and Temporary invert are set in middle drift if desired.Before middle drift 9 excavates, the reply middle drift arch soil body adopts advanced deep hole grouting or per-fore pouring liquid with small pipe to reinforce.
4) the air channel top loop girder construction 10 at large-diameter shield export & import position, as shown in Figure 4, is applied.
5), as shown in Figure 5, in air channel, excavation large-diameter shield passes through the earthwork at position, air channel downwards, the large shield structure of reverse construction is adopted to receive and starting well 11, receive and to utilize at shield structure export & import position in hole castinplace pile as supporting and protection structure 12 with starting well, all the other both sides adopt grid concrete spraying support pattern, and grid Pin is apart from being 50cm ~ 75cm, after soil excavation to shaft bottom design elevation, apply base plate 13, sidewall structure 14 and side wall ring beam 15 and bottom ring beam 16.Around large-diameter shield export & import, ring beam sets up bracing members, bracing members is bearing on the castinplace pile at export & import position by ring beam.
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 (2)
1. the large-diameter shield in tunneling air channel receives and a starting well, it is characterized in that: comprise top, air channel ring beam, supporting and protection structure, base plate, sidewall structure, side wall ring beam and bottom, air channel ring beam; Wherein, top, described air channel ring beam is arranged on the top of supporting and protection structure; In described supporting and protection structure, form large shield structure receive and starting well; Bottom, described air channel ring beam is arranged on the bottom of supporting and protection structure; Described side wall ring beam is arranged on the both sides of supporting and protection structure; Described sidewall structure is positioned at the outside of side wall ring beam; Described base plate is positioned at the bottom of bottom, air channel ring beam.
2. the large-diameter shield in tunneling air channel as claimed in claim 1 receives and starting well, it is characterized in that: described supporting and protection structure adopts grid concrete spraying support structure, and grid Pin distance is 50cm ~ 75cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520080067.0U CN204457784U (en) | 2015-02-04 | 2015-02-04 | Large-diameter shield in a kind of tunneling air channel receives and starting well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520080067.0U CN204457784U (en) | 2015-02-04 | 2015-02-04 | Large-diameter shield in a kind of tunneling air channel receives and starting well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204457784U true CN204457784U (en) | 2015-07-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520080067.0U Expired - Fee Related CN204457784U (en) | 2015-02-04 | 2015-02-04 | Large-diameter shield in a kind of tunneling air channel receives and starting well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204457784U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298501A (en) * | 2015-11-11 | 2016-02-03 | 上海市城市建设设计研究总院 | Construction method for auxiliary air duct structure of underground excavation station |
| CN106089220A (en) * | 2016-07-15 | 2016-11-09 | 中铁第四勘察设计院集团有限公司 | In a kind of water, shield machine arrives and receives structure and method of reseptance |
-
2015
- 2015-02-04 CN CN201520080067.0U patent/CN204457784U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298501A (en) * | 2015-11-11 | 2016-02-03 | 上海市城市建设设计研究总院 | Construction method for auxiliary air duct structure of underground excavation station |
| CN106089220A (en) * | 2016-07-15 | 2016-11-09 | 中铁第四勘察设计院集团有限公司 | In a kind of water, shield machine arrives and receives structure and method of reseptance |
| CN106089220B (en) * | 2016-07-15 | 2019-01-29 | 中铁第四勘察设计院集团有限公司 | Shield machine, which reaches, in a kind of water receives structure and method of reseptance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20160204 |
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| CF01 | Termination of patent right due to non-payment of annual fee |