CN207829893U - A kind of counterforce device of shield jacking New Austrian Tunneling Method supporting - Google Patents
A kind of counterforce device of shield jacking New Austrian Tunneling Method supporting Download PDFInfo
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- CN207829893U CN207829893U CN201820114471.9U CN201820114471U CN207829893U CN 207829893 U CN207829893 U CN 207829893U CN 201820114471 U CN201820114471 U CN 201820114471U CN 207829893 U CN207829893 U CN 207829893U
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- shield
- reaction beam
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- tunnel
- counterforce device
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Abstract
The utility model belongs to tunneling and underground engineering technical field, particularly relate to a kind of counterforce device of shield jacking New Austrian Tunneling Method supporting, primarily to proposing a kind of counterforce device, effective solution tradition shield construction must use pipe-plate lining to provide counter-force, New Austrian Tunneling Method shotcrete bolt lining can not be used to carry out the problem of supporting, the counterforce device, including shield machine body, multiple pipe bending cylinders are uniformly arranged in the shield tail upper edge shield direction of shield machine body, the structure type of the arrangement form and shield section of multiple pipe bending cylinder being uniformly arranged matches；The circumferential arch for being provided on shield section and being arranged along shield section has been excavated in shield machine body, the longitudinal reaction beam arranged along shield section is provided between circumferential arch, the device, which safely and fast tunnels shield method, to be handled reasonable advantage with New Austrian Tunneling Method lining cutting and is combined, and realizes quick, safe, the economic construction target in tunnel.
Description
Technical field
The utility model belongs to tunneling and underground engineering technical field；Particularly relate to a kind of shield jacking New Austrian Tunneling Method
The counterforce device of supporting.
Background technology
At present in no underground water or the soft rock of few underground water, as carried out tunnel in IV, V grade of country rock or soil property and rocky stratum
Road boring construction is generally constructed using New Austrian Tunneling Method or shield method；Wherein shield method is that one kind of tunneling and underground engineering is complete
Mechanized construction method, it is to promote Shield-type machinery in the earth formation, and supporting surrounding country rock by shield shell and section of jurisdiction prevents
Caving in tunnel occurs, while soil excavation is carried out with cutting apparatus in front of excavation face, machinery transports hole by being unearthed
Outside, it pressurizes in the lining cutting of the assembled cyclization in rear portion jacking by jack, then assembled precast concrete section of jurisdiction, forms tunnel structure
A kind of mechanized construction method；Shield method can realize the continuous driving in the construction of stratum, and construction efficiency is high, but liner structure
Using prefabricated pipe section assembled structure, cost is higher.
The construction of underground New Austrian Tunneling Method be using safeguard and using tunnel surrounding self-bearing ability as basic point, it is mixed using anchor pole and injection
Solidifying soil is main supporting means, timely carries out supporting, controls the deformation and relaxation of country rock, and country rock is made to become supporting and protecting system of tunnel
Component part, and the side for instructing constructing tunnel and underground engineering design to construct by measurement to country rock and supporting, monitoring
Method and principle；It uses New Austrian Tunneling Method construction tunnel section based on the shape of a hoof, circle, rectangle etc. can also be used, lining cutting mode is general
It is using composite lining form, i.e., highly beneficial to lining cutting stress in such a way that preliminary bracing adds secondary lining to be combined；Country rock
Under the conditions of flexibility larger preliminary bracing, larger deformation can be generated, most deformation energy is released, thus set after capable of making
Secondary lining reduce stress, after secondary lining applies, but can to preliminary bracing generate radial-thrust force, so as to improve initial stage branch
The stress condition of shield；And lining cutting any surface finish is smooth, is conducive to tunnel ventilation and waterproof, protects outer layer supporting；But on ground
When in IV, V grade of country rock of lower soft rock using New Austrian Tunneling Method construction, it need to generally divide bench excavation, mechanization degree is low, and operation is with artificial
Based on, construction efficiency is relatively low, and security risk is high, and tunneling operation environment is poor.
Invention content
The goal of the invention of the utility model：
Primarily to proposing a kind of a kind of counterforce device being combined with New Austrian Tunneling Method supporting for shield method execution, effectively
Solution tradition shield construction pipe-plate lining must be used to provide counter-force, New Austrian Tunneling Method shotcrete bolt lining can not be used to carry out supporting
Problem；Shield method is safely and fast tunneled and is combined with the advantages of New Austrian Tunneling Method lining cutting economical rationality, existing tunnel knot is not being changed
Under conditions of structure design, it is ensured that soft rock tunnel mechanization speedy drivage, preliminary bracing quick closure cyclization are applicable to each
The lining section of type, such as round, horse-shoe tunnel section realize quick, safe, the economic construction target in tunnel.
The technical solution of the utility model is：
A kind of counterforce device of shield jacking New Austrian Tunneling Method supporting, including shield machine body are provided, in shield machine body
Shield tail upper edge shield direction has been uniformly arranged multiple pipe bending cylinders, the arrangement form and shield of multiple pipe bending cylinders being uniformly arranged
The structure type of tunnel cross-section matches；It is provided with the ring arranged along tunnel cross-section in shield machine body tunneling section
To arch, it is provided between adjacent two Pin circumferential direction arches along the longitudinally arranged longitudinal reaction beam of tunnel cross-section；Pipe bending cylinder top
By at longitudinal reaction beam position.
Along shield tunnel, tunneling direction carries out subsection setup to longitudinal reaction beam forward；Each subsection setup is indulged
It is the distance between adjacent two Pin circumferential direction arches to the length of reaction beam, and longitudinal reaction beam of each subsection setup is held in
On same axis.
This ring longitudinal direction reaction beam arranged along tunnel cross-section and upper ring longitudinal direction reaction beam being arranged between circumferential arch are logical
Cross fastening bolt connection.
The upper and lower part of this ring longitudinal direction reaction beam front end is also connect using fastening bolt with circumferential arch.
This ring longitudinal direction reaction beam also sets lock foot anchoring stock with circumferential arch in joint.
It is also linked with bar-mat reinforcement between the circumferential arch of tunnel cross-section arrangement at adjacent two, is sprayed on bar-mat reinforcement
Concrete.
The utility model has the beneficial effects that：
（1）The economical rationality safely and fast with New Austrian Tunneling Method lining cutting of shield method is combined by the utility model, using one kind
Counter-force setting method and device are realized in the case where not needing lining segment, the purpose that shield is pushed ahead, and are pacified for tunnel
Entirely, economic, efficient build up provides new method.
（2）The counter-force set-up mode and device of the utility model, suitable for having no water or little water stratum, section configuration not by
Limitation, can carry out circle, the shape of a hoof, rectangle and class rectangle section constructing tunnel.
（3）The utility model uses Fully-mechanized operation, substantially reduces manual work intensity, powerful guarantee tunneling operation ring
Border safety, significantly improves task environmental quality.
Description of the drawings
Fig. 1 is the structural schematic diagram that the counterforce device of the utility model is arranged；
Fig. 2 is the structural schematic diagram that the counterforce device section of the utility model is arranged；
Fig. 3 is the attachment structure schematic diagram of the circumferential arch and longitudinal reaction beam of the utility model.
In figure；1 is shield machine body；2 be shield tail；3 be pipe bending cylinder；4 be circumferential arch；5 be longitudinal reaction beam；6 are
Fastening bolt；7 be preliminary bracing；8 be secondary lining-up.
Specific implementation mode
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.
As shown in Figures 1 to 3, a kind of counterforce device of shield jacking New Austrian Tunneling Method supporting, including shield machine body 1 are provided,
It is uniformly arranged multiple pipe bending cylinders 3, multiple pushing tow oil being uniformly arranged in the 2 upper edge shield direction of shield tail of shield machine body
The arrangement form of cylinder and the structure type of shield tunnel section match；It is provided in shield machine body tunneling section
Along the circumferential arch 4 of tunnel cross-section arrangement, it is provided between adjacent two Pin circumferential direction arches longitudinally arranged vertical along tunnel cross-section
To reaction beam 5；Pipe bending cylinder is abutted against to longitudinal reaction beam position.
With shield tunnel, tunneling direction carries out subsection setup to longitudinal reaction beam forward；Each subsection setup is indulged
It is the distance between adjacent two Pin circumferential direction arches to the length of reaction beam, and longitudinal reaction beam of each subsection setup is held in
On same axis.
This ring longitudinal direction reaction beam arranged along tunnel cross-section and upper ring longitudinal direction reaction beam being arranged between circumferential arch are logical
Cross the connection of fastening bolt 6.
The upper and lower part of this ring longitudinal direction reaction beam front end is also connect using fastening bolt 6 with circumferential arch.
This ring longitudinal direction reaction beam also sets lock foot anchoring stock with circumferential arch in joint.
It is also linked with bar-mat reinforcement between the circumferential arch of tunnel cross-section arrangement at adjacent two, is sprayed on bar-mat reinforcement
Concrete.
Use the setting method of the counterforce device of above-mentioned shield jacking New Austrian Tunneling Method supporting for：
1. according to conditions such as tunnel formation condition, hydraulic character and shield shell length, calculate thrust needed for shield driving and its
Required propelling cylinder quantity, according to tunnel cross-section form, position of the reasonable determining shield driving oil cylinder in tunnel cross-section；
2. according to single cylinder thrust size, oil cylinder position and tunnel cross-section, Tunnel circumferential direction point is determined
Cut mode and preliminary bracing counter-force longeron position；
3. tunnel excavation excavates a tunnel support gap length according to Tunnel spacing；
4. preliminary bracing is constructed, according to geological conditions, the shield tail of shield machine can integrally retract or piecemeal is retracted, and work as piecemeal
When retraction, just circumferential arch, longitudinal reaction beam, reinforcing bar is arranged to the corresponding tunnel surrounding region of the piecemeal in a piecemeal of often retracting
Mesh sheet and anchor pole, gunite concrete after domain installation, and complete the construction of domain preliminary bracing 7, longitudinal reaction beam of preliminary bracing
Tunnel is connected to have performed at secondary lining-up 8；
5. at the reaction beam of shield pipe bending cylinder top to preliminary bracing longitudinal direction, shield machine is pushed ahead an excavation length；
6. repeating the above steps 1 to 5, tunnel excavation support cycle operation is carried out.
In step 3, the shield tail of the shield tunneling equipment is that piecemeal is constituted, piecemeal size and Tunnel
Piecemeal size corresponds to, and each piecemeal can make the country rock face of tunnel periphery excavation along the vertical equity stretching motion of shield machine
Piecemeal exposes.
In step 4, the construction procedure of preliminary bracing is：4.1 according to shield tail segmented areas, first tunnel inverted arch bottom
Piecemeal is retracted to tunnel tunnel face direction, is then retracted successively for left and right arch wall position, is finally retracted for arch crown part；4.2
Each shield tail retraction region installs the corresponding circumferential piecemeal arch in the region, then installs longitudinal reaction beam, this ring is longitudinal first
Reaction beam end is bolted with upper ring longitudinal direction reaction beam, and ensures two ring reaction beams on the same axis, this ring is longitudinal
Reaction beam upper front end and lower part are reliably connected with circumferential arch using bolt, and lock foot anchor is set in joint after being provided with
Bar, hangs bar-mat reinforcement between front and back two rings arch, and gunite concrete completes the region preliminary bracing construction；
4.3 repeat above step, complete domain preliminary bracing construction and longitudinal reaction beam setting.
The Tunnel by circumferential arch, longitudinal reaction beam, longitudinally connected muscle, reinforced mesh, lock foot anchoring stock with
And the compositions such as gunite concrete；Wherein longitudinal reaction beam is bolted with upper and lower circumferential arch in joint, longitudinal counter-force
In joint also by being bolted between beam.
Embodiment one：It below will be by taking horse-shoe tunnel uses the shield method execution New Austrian Tunneling Method supporting as an example, further
Illustrate the form of implementation of the present invention：
The first step：According to tunnel geology condition and section, determine that shield pipe bending cylinder is 9.
Second step：According to single cylinder thrust size, oil cylinder position and tunnel cross-section, Tunnel ring is determined
To partitioning scheme and preliminary bracing counter-force longeron position.
Third walks：Tunnel excavation, according to Tunnel spacing, excavate a tunnel support gap length 0.8m~
1m。
4th step：Preliminary bracing is constructed, and the construction procedure of preliminary bracing is：1. according to shield tail segmented areas, tunnel first
The piecemeal of inverted arch bottom is retracted to tunnel tunnel face direction；2. in each shield tail retraction region, it is corresponding which is installed first
Then circumferential piecemeal arch installs longitudinal reaction beam, this ring longitudinal direction reaction beam end is connected with upper ring longitudinal direction reaction beam by bolt
It connects, and ensures two ring reaction beams on the same axis, this ring longitudinal direction reaction beam upper front end and lower part use spiral shell with circumferential arch
Bolt is reliably connected, and lock foot anchoring stock is set in joint after being provided with, and bar-mat reinforcement is hung between front and back two rings arch, and injection is mixed
Solidifying soil completes the region preliminary bracing construction；3. repeating above step, completes tunnel side wall and vault preliminary bracing and longitudinal direction is anti-
The setting of power beam, forms domain preliminary bracing and longitudinal reaction beam, and longitudinal reaction beam in preliminary bracing is connected to tunnel and has applied
It does at secondary lining-up.
5th step：Shield pushes ahead shield machine at all pipe bending cylinder tops to corresponding preliminary bracing longitudinal direction reaction beam
One excavation length.
6th step：Step 1 is repeated to step 5, carries out tunnel excavation support cycle operation.
Claims (6)
1. a kind of counterforce device of shield jacking New Austrian Tunneling Method supporting, including shield machine body, it is characterised in that:In shield machine body
Shield tail upper edge shield direction be uniformly arranged multiple pipe bending cylinders, the arrangement form and shield of multiple pipe bending cylinders being uniformly arranged
The structure type of structure tunnel cross-section matches；It is provided in shield machine body tunneling section and to be arranged along tunnel cross-section
Circumferential arch is provided between adjacent two Pin circumferential direction arches along the longitudinally arranged longitudinal reaction beam of tunnel cross-section；Pipe bending cylinder
It abuts against to longitudinal reaction beam position.
2. a kind of counterforce device of shield jacking New Austrian Tunneling Method supporting according to claim 1, it is characterised in that：Described is vertical
To reaction beam, along shield tunnel, tunneling direction carries out subsection setup forward；The length of longitudinal reaction beam of each subsection setup is
The distance between adjacent two Pin circumferential direction arches, and longitudinal reaction beam of each subsection setup is held on same axis.
3. a kind of counterforce device of shield jacking New Austrian Tunneling Method supporting according to claim 1 or 2, it is characterised in that：In ring
Connected to this ring longitudinal direction reaction beam arranged along tunnel cross-section and upper ring longitudinal direction reaction beam being arranged between arch by fastening bolt
It connects.
4. a kind of counterforce device of shield jacking New Austrian Tunneling Method supporting according to claim 3, it is characterised in that：The sheet
The upper and lower part of ring longitudinal direction reaction beam front end is also connect using fastening bolt with circumferential arch.
5. a kind of counterforce device of shield jacking New Austrian Tunneling Method supporting according to claim 4, it is characterised in that：The sheet
Ring longitudinal direction reaction beam also sets lock foot anchoring stock with circumferential arch in joint.
6. a kind of counterforce device of shield jacking New Austrian Tunneling Method supporting according to claim 1, it is characterised in that：Adjacent
Two are also linked with bar-mat reinforcement between the circumferential arch of tunnel cross-section arrangement, the gunite concrete on bar-mat reinforcement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820114471.9U CN207829893U (en) | 2018-01-24 | 2018-01-24 | A kind of counterforce device of shield jacking New Austrian Tunneling Method supporting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820114471.9U CN207829893U (en) | 2018-01-24 | 2018-01-24 | A kind of counterforce device of shield jacking New Austrian Tunneling Method supporting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207829893U true CN207829893U (en) | 2018-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820114471.9U Active CN207829893U (en) | 2018-01-24 | 2018-01-24 | A kind of counterforce device of shield jacking New Austrian Tunneling Method supporting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266196A (en) * | 2018-01-24 | 2018-07-10 | 中铁工程装备集团有限公司 | A kind of counterforce device and its setting method of shield jacking New Austrian Tunneling Method supporting |
-
2018
- 2018-01-24 CN CN201820114471.9U patent/CN207829893U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266196A (en) * | 2018-01-24 | 2018-07-10 | 中铁工程装备集团有限公司 | A kind of counterforce device and its setting method of shield jacking New Austrian Tunneling Method supporting |
| CN108266196B (en) * | 2018-01-24 | 2024-01-19 | 中铁工程装备集团有限公司 | Counterforce device for shield jacking new Otto support and setting method thereof |
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