CN109236305A - Shield sky is pushed away through bored tunnel and the secondary construction method and its structure originated - Google Patents
Shield sky is pushed away through bored tunnel and the secondary construction method and its structure originated Download PDFInfo
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- CN109236305A CN109236305A CN201811258119.3A CN201811258119A CN109236305A CN 109236305 A CN109236305 A CN 109236305A CN 201811258119 A CN201811258119 A CN 201811258119A CN 109236305 A CN109236305 A CN 109236305A
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- 238000010276 construction Methods 0.000 title claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 103
- 239000010959 steel Substances 0.000 claims abstract description 103
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 230000008901 benefit Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 5
- 240000009087 Crescentia cujete Species 0.000 claims description 3
- 235000005983 Crescentia cujete Nutrition 0.000 claims description 3
- 235000009797 Lagenaria vulgaris Nutrition 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 239000011083 cement mortar Substances 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 239000004115 Sodium Silicate Substances 0.000 claims description 2
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 2
- 238000005493 welding type Methods 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 238000003466 welding Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000007569 slipcasting Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention relates to shield skies to push away through bored tunnel and the secondary construction method and its structure originated, by in concrete guide table of the bored tunnel bottom pouring with hole, track is laid in guide table, steel corbel is installed in hole, stepping is pushed away for shield sky using steel corbel and jack collective effect, reaction force is provided, realize that the efficient sky of shield pushes away and pass through bored tunnel；Separately by the way that in bored tunnel secondary lining pre-embedded steel slab, pre-embedded steel slab, the support of fashioned iron counter-force are connect with the rigid boxing of counter-force, counter-force support is provided for secondary originate of shield, makes shield is smoothly secondary in bored tunnel to originate.The present invention is directed to bored tunnel narrow space, and construction is limited vulnerable to various aspects, by ingehious design built-in fitting and reserved cavity, and is improved, is optimized to counter-force frame system etc..Not only easy construction and speed of application is very fast, reduces investment outlay, and avoids shield machine and first pass through and remove the adjoint high risk in section of jurisdiction, ensure that construction and safety of surrounding environment.
Description
Technical field
The invention belongs to tunnel construction technical fields, and in particular to a kind of shield sky, which pushes away, to be passed through bored tunnel and secondary originate
Construction method and its structure.
Background technique
With the swift and violent propulsion of urbanization process, Construction of Urban Rail Traffic is like a raging fire, and shield method is due to very suitable
Constructing for city tunnel is closed, the dominant position of consolidation is established in urban subway tunnel construction technology.Shield technique in recent years
Be able to well using with development, shield launching the technologies such as reaches, misses the stop and reach its maturity, but shield sky push away it is complete by structure
Realize that the secondary technology originated is also immature at the bored tunnel of the narrow space performed, and in bored tunnel.By tunneling tunnel
Road spacial influence, heavy construction equipment can not march into the arena, and push away advance to shield sky, reaction frame is set up, the dismounting of negative endless tube piece brings pole
Risks and challenge.How in the case where guaranteeing secured premise, efficiently smoothly realize that shield sky pushes away stepping and shield is secondary originates, and is
Urgent problem.
Summary of the invention
The object of the present invention is to provide a kind of shield skies to push away through bored tunnel and the secondary construction method originated and its knot
Structure is poured concrete guide table and reserving hole is in concrete guide table by the pre-embedded steel slab in bored tunnel secondary lining
Shield sky, which is spreaded to, originates offer condition.It may be implemented in the smooth sky of shield in bored tunnel and push away and pass through, and successfully secondary originate.
The technical scheme adopted by the invention is as follows:
Shield sky is pushed away through bored tunnel and the secondary construction method originated, it is characterised in that:
The following steps are included:
Step 1: before shield machine reaches bored tunnel, carrying out the construction of concrete guide table, and concrete guide table shape is arc,
Positioned at tunnel bottom center；Concrete guide table is every horizontally-arranged reserved three holes of 7.5m；Reach intensity requirement to concrete guide table
When, in the track of concrete guide table two sides installation shield machine, track is wedge shape close to shield tunnel section；
Step 2: sky pushes away stepping: after shield tunnel perforation, clearing up hole and shield machine, can smoothly enter into shield machine mixed
After solidifying soil guide table upper rail, steel corbel is installed in reserving hole, and jack is installed in shield drive end unit, jack acts on
Support reaction is provided for shield machine air pushing advance on steel corbel, shield machine is made to advance along track, sky pushes away advance process only assembled arch bottom
Block section of jurisdiction；
Step 3: reaction rack equipment installation: originating section shield machine is secondary, in secondary lining inverted arch and arch wall pre-buried one when construction
The pre-embedded steel slab of fixed number amount, it is secondary originate before welded on pre-embedded steel slab type steel support carry out it is assembled, it is complete to counter-force steel loop assembly
Bi Hou positions the rigid ring position of counter-force, and position uses the rigid ring of counter-force and each type steel support bottom and two sides after determining
Steel pipe support is reinforced；
Step 4: it is assembled to carry out negative ring: needing the negative endless tube piece in five rings to be assemblied into altogether, shield is secondary to originate offer counter-force, negative endless tube piece
Assembly uses through seam assembling, and the block position that will bind is fixed on right above tunnel；In shield tail after the assembled good domain, jack is utilized
Section of jurisdiction is slowly released, starts assembled second endless tube piece after the prominent shield tail 200mm of the negative endless tube piece of the first ring, and so on；
Step 5: it is secondary to originate whether preceding inspection hole range has sundries, cutterhead is started turning when cutterhead is apart from soil body 20cm, and
Support system is observed；Shield drive end unit immediately begins to synchronous grouting after entering portal ring, and injecting paste material is water at this time
Mud-waterglass rapid-hardening mortar；Shield drive end unit enters portal ring grouting behind shaft or drift lining material and is adjusted to cement mortar；
Step 6: it in bored tunnel Second Lining Construction in the pre-buried three pieces of pre-embedded steel slabs of 50 ° of range positions of tunnel vault, indulges
It is section of jurisdiction width to spacing；After Second Lining Construction, lifting lug is welded on pre-embedded steel slab, utilizes lifting lug and zipper calabash pair
Negative endless tube piece is removed；The block that binds first is removed, from top to bottom negative endless tube piece is removed later.
Shield sky is pushed away through bored tunnel and the secondary constructing structure originated, it is characterised in that:
Including the support of bottom counter-force and the support of top counter-force；
Counter-force support in bottom includes concrete guide table, is provided with reserving hole in concrete guide table, is fitted with use in reserving hole
In providing the steel corbel of support reaction for jack；
Counter-force support in top includes the pre-embedded steel slab on secondary lining, is welded with type steel support on pre-embedded steel slab, type steel support is another
One end and counter-force steel ring welding.
In the support of bottom counter-force:
It goes to the bottom casting concrete guide table within the scope of 45 degree in bored tunnel, track is installed, track passes through swollen in concrete guide table
Swollen bolt is fixed.
In the support of bottom counter-force:
Every 7.5 meters, in bottom plate, laterally three reserving holes of setting, reserving hole interpolation steel loading bracket, sky push through concrete guide table
Journey hogging bottom tube piece makes shield machine advance along track by jack by the support reaction that bottom tube piece is pushed into provide at steel corbel is encircleed.
In the support of top counter-force:
Pre-embedded steel slab is set in secondary lining inverted arch and arch wall, pre-embedded steel slab is connect with type steel support by being fully welded, type steel support
The other end and counter-force steel ring welding.
In the support of top counter-force:
It is reinforced in counter-force steel loop bottom and two sides using steel pipe support；
Tunnel top counter-force support system is collectively constituted using by pre-embedded steel slab, type steel support and counter-force steel loop, is that shield is secondary
Offer support is provided.
The invention has the following advantages that
The present invention is poured concrete guide table in bored tunnel bottom plate, bracket steel is installed in guide table reserving hole, in the secondary lining in tunnel
Pre-embedded steel slab when building construction, and pre-embedded steel slab, type steel support and the rigid boxing of counter-force are connect and to form the steel completing support system, being related to
It is conventional material (equipment) that material, cement slurry and steel pipe, which set mechanical equipment etc. used, and corresponding size is conventional class
Type, manufacture easy to process；And pre-embedded steel slab size, horizontal layout, hole location can be practical according to bored tunnel overview and engineering
It needs to be adjusted, a full set of structural system is suitable for different size bored tunnels.This structural system, it can be ensured that shield driven tunnel crossing
The safety of mining sectbn structure itself and surrounding enviroment avoids shield machine and first passes through the adjoint high risk in dismounting section of jurisdiction.Effectively
It solves in narrow bored tunnel, shield sky pushes away by and carries out the secondary big machinery that originates and can not march into the arena, constructional difficulties etc.
Problem ensure that the operability of construction and saves the duration, have high economic benefit and social benefit, in city rail
Have wide practical use in the engineerings such as traffic, railway, highway.
Detailed description of the invention
Fig. 1 is that shield sky is pushed away through bored tunnel schematic longitudinal section.
Fig. 2 is that shield sky is pushed away through bored tunnel schematic cross-sectional view.
Fig. 3, which is that shield is secondary, originates tunnel profile schematic diagram.
Fig. 4, which is that shield is secondary, originates tunnel cross section schematic diagram.
In figure, 1- bored tunnel, 2- lifting lug, 3- shield machine, 4- concrete guide table, 5- track, 6- reserving hole, 7- steel ox
Leg, 8- jack, 9- encircle bottom tube piece, 10- secondary lining, 11- pre-embedded steel slab, 12- type steel support, 13- counter-force steel loop, 14- steel
Tube stay, the negative endless tube piece of 15-.
Specific embodiment
The present invention will be described in detail With reference to embodiment.
The present invention relates to a kind of shield skies to push away through bored tunnel and the secondary construction method originated, comprising the following steps:
Step 1: it before shield machine 3 reaches bored tunnel 1, carries out concrete guide table 4 and constructs, concrete guide table 4 uses C35
Concrete is poured, 4 shape of concrete guide table be arc, be located at 45 ° of tunnel bottom center within the scope of, specific size be R=
3.085m, B=2.4m, H=1.3m.Concrete guide table 4 reserves three holes every 7.5m is horizontally-arranged, intermediate hole having a size of 150 ×
250 × 500mm, for two sides hole having a size of 150 × 250 × 733mm, hole center spacing is 1332mm；It is reached to concrete guide table 4
When to intensity requirement, in the track 5 of 4 two sides of concrete guide table installation shield machine 3, track 5 is wedge shape, side close to shield tunnel section
Just shield machine injection is pushed away for shield sky and is ready by bored tunnel.
Step 2: sky pushes away stepping: after shield tunnel perforation, hole and shield machine 3 cleared up, it is smooth to shield machine 3
Into after the upper rail of concrete guide table 45, steel corbel 7 is installed in reserving hole 6, and jack 8 is installed in 3 tail portion of shield machine,
Jack 8 acts on steel corbel 7 and provides support reaction for shield machine air pushing advance, so that shield machine 3 is advanced along track 5, before sky pushes away
Into process assembled arch bottom section of jurisdiction 9；Since 7 longitudinal pitch of reserving hole is definite value 7.5m, the stride therefore shield machine advances every time
For 7.5m.Since one ring ring width of shield duct piece is 1.5m, assembled 5 ring arch bottom sections of jurisdiction 9 are needed, are existed to prevent section of jurisdiction from moving up needs
One piece of section of jurisdiction is placed above arch bottom section of jurisdiction 9 to limit the displacement of arch bottom section of jurisdiction 9.It is necessary that 3 sky of shield machine pushes away forward speed
Strict control, fltting speed should be maintained at 10-20mm/ minutes.Shield driving simultaneously, construction party must be to shield machine advance shape
State, shield machine and orbital position carry out emphasis control, such as note abnormalities and stop promoting immediately, guarantee that sky pushes away stepping safely and conveniently
It completes.
Step 3: reaction rack equipment installation: originating section at shield machine 3 two times, in 10 inverted arch of secondary lining and arch when construction
The pre-buried a certain number of pre-embedded steel slabs 11 of wall, secondary to originate the preceding welded H 250a type steel support 12 on pre-embedded steel slab 11)；By upper
Assembly is carried out to counter-force steel loop 13 to lower, to 13 assembly of counter-force steel loop after, 13 position of the rigid ring of counter-force is positioned, position
By the rigid ring 13 of counter-force and each type steel support 12 after determination) it welds, it is supportted in rigid 13 bottom of ring of counter-force and two sides using steel pipe
14 reinforce；Welder should ensure that when welding counter-force support in same section, and welding manner is used and is fully welded.A whole set of
Component forms shield reaction rack equipment system.
Step 4: it is assembled to carry out negative ring: needing the negative endless tube piece 15 in five rings to be assemblied into altogether, shield is secondary to originate offer counter-force, bears
Endless tube piece 15 is assembled to use through seam assembling, and the block position that will bind is fixed on right above tunnel；In shield tail after the assembled good domain, benefit
Section of jurisdiction is slowly released with jack 8, starts assembled second endless tube piece after the prominent shield tail 200mm of the negative endless tube piece 15 of the first ring, with
This analogizes；
Step 5: it is secondary to originate whether preceding inspection hole range has sundries, cutterhead is started turning when cutterhead is apart from soil body 20cm, and
Support system is observed；It controls cutterhead and rotates angle, stop driving immediately if cutterhead occurs and surveys rolling.Due to lower support body
System is weaker, before shield machine does not integrally enter the soil body, must not use top jack.It is secondary to originate the stage due to forward thrust
It is smaller, if inclined soft formation should keep shield machine upward slope trend, prevent shield from bowing.After 3 tail portion of shield machine enters portal ring
Synchronous grouting is immediately begun to, injecting paste material is cement-sodium silicate rapid-hardening mortar at this time；3 tail portion of shield machine enters portal ring
Grouting behind shaft or drift lining material is adjusted to cement mortar；Injection speed, grouting pressure and slip casting are adjusted according to spillage situation in time when slip casting
Amount.
Step 6: in bored tunnel Second Lining Construction in the pre-buried three pieces of pre-embedded steel slabs of 50 ° of range positions of tunnel vault
11, longitudinal pitch is section of jurisdiction width；After secondary lining 10 is constructed, lifting lug 2 is welded on pre-embedded steel slab 11, utilizes lifting lug
2 and zipper calabash negative endless tube piece 15 is removed；The block that binds first is removed, from top to bottom negative endless tube piece 15 is torn open later
It removes.
When bored tunnel 1 is constructed, structural system, i.e. constructing structure are performed, is pushed away for 3 sky of shield machine through bored tunnel 1
And shield is secondary originates offer condition, it is ensured that the smooth sky of shield, which pushes away, passes through bored tunnel and success is secondary originates.The construction
Structure, including the support of bottom counter-force and the support of top counter-force；Counter-force support in bottom includes concrete guide table 4, in concrete guide table 4
It is provided with reserving hole 6, is fitted in reserving hole 6 for providing the steel corbel 7 of support reaction for jack 8；Top counter-force branch
Support includes the pre-embedded steel slab 11 on secondary lining 10, is welded with type steel support 12,12 other end of type steel support on pre-embedded steel slab 11
It is welded with counter-force steel loop 13.
In the support of bottom counter-force:
It goes to the bottom casting concrete guide table 4 within the scope of 45 degree in bored tunnel 1, track 5 is installed, track 5 leads in concrete guide table 4
Expansion bolt is crossed to fix.Three reserving holes 6,6 interpolation of reserving hole is laterally arranged in bottom plate every 7.5 meters in concrete guide table 4
Steel loading bracket 7, sky push through journey hogging bottom tube piece 9, are pushed into the support reaction provided at steel corbel 7 for bottom tube piece 9 is encircleed by jack 8
Shield machine 3 is set to advance along track 5.
In the support of top counter-force:
In 10 inverted arch of secondary lining and arch wall, pre-embedded steel slab 11 is set, pre-embedded steel slab 11 is connect with type steel support 12 by being fully welded,
12 other end of type steel support and counter-force steel loop 13 weld.It is reinforced in 13 bottom of counter-force steel loop and two sides using steel pipe support 14；Using
Tunnel top counter-force support system is collectively constituted by pre-embedded steel slab 11, type steel support 12 and counter-force steel loop 13, is the shield secondary beginning
Hair provides support.
The present invention have it is flexible and changeable, it is adaptable, it is safe and reliable the features such as.Ensure shield driven tunnel crossing mining sectbn knot
The safety of structure itself and surrounding enviroment avoids shield machine and first passes through the adjoint high risk in dismounting section of jurisdiction.It efficiently solves narrow
In small bored tunnel, the problems such as shield sky pushes away by and carries out the secondary big machinery that originates and can not march into the arena, constructional difficulties, it ensure that
The operability of construction simultaneously saves the duration, has high economic benefit and social benefit.
The contents of the present invention are not limited to cited by embodiment, and those of ordinary skill in the art are by reading description of the invention
And to any equivalent transformation that technical solution of the present invention is taken, all are covered by the claims of the invention.
Claims (6)
1. shield sky is pushed away through bored tunnel and the secondary construction method originated, it is characterised in that:
The following steps are included:
Step 1: before shield machine (3) reach bored tunnel (1), concrete guide table (4) construction, concrete guide table (4) are carried out
Shape is arc, is located at tunnel bottom center；Concrete guide table (4) is every horizontally-arranged reserved three holes of 7.5m；It is led to concrete
When platform (4) reaches intensity requirement, in the track (5) of concrete guide table (4) two sides installation shield machine (3), track (5) is close to shield
Tunnel construction sections are wedge shape；
Step 2: sky pushes away stepping: after shield tunnel perforation, hole and shield machine (3) cleared up, it is smooth to shield machine (3)
After getting on the right track (5) into concrete guide table (4), steel corbel (7) are installed in reserving hole (6), and are pacified in shield machine (3) tail portion
It fills jack (8), jack (8) acts on steel corbel (7) and provides support reaction for shield machine air pushing advance, makes shield machine (3)
Advance along track (5), sky pushes away advance process only assembled arch bottom section of jurisdiction (9)；
Step 3: reaction rack equipment installation: originating section shield machine (3) is secondary, in secondary lining (10) inverted arch and arch when construction
The pre-buried a certain number of pre-embedded steel slabs (11) of wall are secondary to originate preceding welding type steel support (12) on pre-embedded steel slab (11)；By upper
To it is lower counter-force steel loop (13) are carried out it is assembled, to counter-force steel loop (13) it is assembled after, the rigid ring of counter-force (13) position is determined
Position, the rigid ring of counter-force (13) and each type steel support (12) are welded after determining in position, in the rigid ring of counter-force (13) bottom and two
Side is reinforced using steel pipe support (14)；
Step 4: it is assembled to carry out negative ring: needing the negative endless tube piece (15) in five rings to be assemblied into altogether, shield is secondary to originate offer counter-force, negative ring
Section of jurisdiction (15) is assembled to use through seam assembling, and the block position that will bind is fixed on right above tunnel；In shield tail after the assembled good domain, benefit
Section of jurisdiction is slowly released with jack (8), starts assembled second endless tube after the prominent shield tail 200mm of the negative endless tube piece (15) of the first ring
Piece, and so on；
Step 5: it is secondary to originate whether preceding inspection hole range has sundries, cutterhead is started turning when cutterhead is apart from soil body 20cm, and
Support system is observed；Shield machine (3) tail portion immediately begins to synchronous grouting after entering portal ring, and injecting paste material is at this time
Cement-sodium silicate rapid-hardening mortar；Shield machine (3) tail portion enters portal ring grouting behind shaft or drift lining material and is adjusted to cement mortar；
Step 6: in bored tunnel Second Lining Construction in the pre-buried three pieces of pre-embedded steel slabs (11) of 50 ° of range positions of tunnel vault,
Its longitudinal pitch is section of jurisdiction width；After secondary lining (10) is constructed, lifting lug (2) are welded on pre-embedded steel slab (11), are utilized
Lifting lug (2) and zipper calabash remove negative endless tube piece (15)；The block that binds first is removed, later from top to bottom to negative endless tube piece
(15) it is removed.
2. shield sky is pushed away through bored tunnel and the secondary constructing structure originated, it is characterised in that:
Including the support of bottom counter-force and the support of top counter-force；
Counter-force support in bottom includes concrete guide table (4), is provided with reserving hole (6), reserving hole in concrete guide table (4)
(6) it is fitted in for providing the steel corbel (7) of support reaction for jack (8)；
Counter-force support in top includes the pre-embedded steel slab (11) on secondary lining (10), and pre-embedded steel slab is welded with type steel support on (11)
(12), type steel support (12) other end and counter-force steel loop (13) are welded.
3. shield sky according to claim 2 is pushed away through bored tunnel and the secondary constructing structure originated, it is characterised in that:
In the support of bottom counter-force:
It goes to the bottom casting concrete guide table (4) within the scope of 45 degree in bored tunnel (1), concrete guide table is equipped with track on (4)
(5), track (5) is fixed by expansion bolt.
4. shield sky according to claim 2 is pushed away through bored tunnel and the secondary constructing structure originated, it is characterised in that:
In the support of bottom counter-force:
Three reserving holes (6), reserving hole (6) interpolation steel loading ox is laterally arranged in bottom plate every 7.5 meters in concrete guide table (4)
Leg (7), sky push through journey hogging bottom tube piece (9), will encircle bottom tube piece (9) by jack (8) and be pushed into the branch provided at steel corbel (7)
Counter-force makes shield machine (3) advance along track (5).
5. shield sky according to claim 2 is pushed away through bored tunnel and the secondary constructing structure originated, it is characterised in that:
In the support of top counter-force:
In secondary lining (10) inverted arch and arch wall setting pre-embedded steel slab (11), pre-embedded steel slab (11) and type steel support (12) pass through completely
Weldering connection, type steel support (12) other end and counter-force steel loop (13) are welded.
6. shield sky according to claim 2 is pushed away through bored tunnel and the secondary constructing structure originated, it is characterised in that:
In the support of top counter-force:
It is reinforced in counter-force steel loop (13) bottom and two sides using steel pipe support (14)；
Tunnel top counter-force supporter is collectively constituted using by pre-embedded steel slab (11), type steel support (12) and counter-force steel loop (13)
System provides support for secondary originate of shield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811258119.3A CN109236305A (en) | 2018-10-26 | 2018-10-26 | Shield sky is pushed away through bored tunnel and the secondary construction method and its structure originated |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811258119.3A CN109236305A (en) | 2018-10-26 | 2018-10-26 | Shield sky is pushed away through bored tunnel and the secondary construction method and its structure originated |
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| CN109236305A true CN109236305A (en) | 2019-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811258119.3A Pending CN109236305A (en) | 2018-10-26 | 2018-10-26 | Shield sky is pushed away through bored tunnel and the secondary construction method and its structure originated |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915153A (en) * | 2019-04-18 | 2019-06-21 | 中铁工程装备集团有限公司 | It is a kind of to provide the propulsion system and construction method of counter-force support by inverted arch back filled region |
| CN110685699A (en) * | 2019-10-15 | 2020-01-14 | 中铁十二局集团有限公司 | Mine method tunnel shield empty pushing starting construction method |
| CN110761800A (en) * | 2019-12-05 | 2020-02-07 | 中铁十二局集团第二工程有限公司 | Air-assisted launching construction method of launching well in underground excavation tunnel shield machine |
| CN111502692A (en) * | 2020-04-10 | 2020-08-07 | 中铁隧道集团二处有限公司 | TBM (tunnel boring machine) first-ring segment lining split mounting type box locking device and application method |
| CN113236267A (en) * | 2021-06-25 | 2021-08-10 | 中铁工程装备集团技术服务有限公司 | Shield starting counterforce device and using method thereof |
| CN113446031A (en) * | 2021-07-13 | 2021-09-28 | 广州地铁设计研究院股份有限公司 | Shield segment pre-reinforcing structure based on air bag steel ring and construction method |
| CN113931640A (en) * | 2021-10-15 | 2022-01-14 | 中国建筑第六工程局有限公司 | Construction method for empty pushing and starting of shield in mine tunnel |
| CN114151093A (en) * | 2021-11-12 | 2022-03-08 | 中铁隧道局集团有限公司 | Construction method for continuously pushing shield through vertical shaft in air and carrying out secondary starting |
| CN114184401A (en) * | 2021-11-09 | 2022-03-15 | 中铁第一勘察设计院集团有限公司 | Similar model test system for earth pressure balance type shield underpass composite foundation |
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| CN113446031A (en) * | 2021-07-13 | 2021-09-28 | 广州地铁设计研究院股份有限公司 | Shield segment pre-reinforcing structure based on air bag steel ring and construction method |
| CN113931640A (en) * | 2021-10-15 | 2022-01-14 | 中国建筑第六工程局有限公司 | Construction method for empty pushing and starting of shield in mine tunnel |
| CN113931640B (en) * | 2021-10-15 | 2024-04-12 | 中国建筑第六工程局有限公司 | Construction method for shield empty pushing and starting in mine tunnel |
| CN114184401A (en) * | 2021-11-09 | 2022-03-15 | 中铁第一勘察设计院集团有限公司 | Similar model test system for earth pressure balance type shield underpass composite foundation |
| CN114151093A (en) * | 2021-11-12 | 2022-03-08 | 中铁隧道局集团有限公司 | Construction method for continuously pushing shield through vertical shaft in air and carrying out secondary starting |
| CN114151093B (en) * | 2021-11-12 | 2024-06-18 | 中铁隧道局集团有限公司 | Construction method for shield to continuously push through vertical shaft in empty mode and initiate in secondary mode |
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