CN109139055A - Wholecircle jacked piles with small section needle beam trolley lining construction method - Google Patents
Wholecircle jacked piles with small section needle beam trolley lining construction method Download PDFInfo
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- CN109139055A CN109139055A CN201811267253.XA CN201811267253A CN109139055A CN 109139055 A CN109139055 A CN 109139055A CN 201811267253 A CN201811267253 A CN 201811267253A CN 109139055 A CN109139055 A CN 109139055A
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- 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
- E21D11/04—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
- E21D11/102—Removable shuttering; Bearing or supporting devices therefor
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- 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
- E21D11/04—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
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- 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
- E21D11/04—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
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention provides a kind of wholecircle jacked piles with small section needle beam trolley lining construction method, comprising the following steps: S1) wholecircle jacked piles with small section is divided into multiple construction sections；S2) using dividing sequence lining method to carry out lining construction to workshop section of each institute, the lining construction of each construction section includes that part brings down stocks step, lining cutting step, brings down stocks lining cutting step and pour step；Step is brought down stocks in the part of each construction section and the lining cutting step of a upper construction section is performed simultaneously, it brings down stocks step and is performed simultaneously in the part for bringing down stocks lining cutting step and next construction section of the lining cutting step of each construction section and a upper construction section, each construction section bring down stocks lining cutting step and the lining cutting step for pouring step and next construction section of a upper construction section is performed simultaneously, each construction section pour step and the lining cutting step of bringing down stocks of next construction section is performed simultaneously；S3) tunnel conserves.Lining construction method provided by the invention saves the time for waiting the concrete setting of each construction section, substantially increases construction efficiency.
Description
Technical field
The present invention relates to water conservancy tunnel construction technical fields, and in particular, to a kind of wholecircle jacked piles with small section needle beam trolley
Lining construction method.
Background technique
With the continuous development of Chinese society economy, water conservancy infrastructure is also being rapidly developed, and water conservancy tunnel accounts for water conservancy and builds
If the ratio of project is also constantly increasing.Because of the particularity of use environment, the construction of concrete lining of water conservancy tunnel becomes entire
Important link in water conservancy inrush during tunneling.Guaranteeing the same of water conservancy tunnel concrete liner construction safety and construction quality
When, the construction speed for how accelerating lining cutting becomes the problem of all kinds of engineering staffs pay close attention to jointly.In practice of construction, can usually it meet
It is circular tunnel to water conservancy tunnel section, at present when carrying out the lining construction of round water conservancy tunnel, using in completion water conservancy
Concreting is carried out to the laying section using needle beam trolley at once after a certain section of lining cutting reinforcing bar is laid in tunnel, is poured to the section
The laying of lining cutting reinforcing bar and concreting for carrying out next section after the concrete setting built again, are waiting concrete setting in this way
The expansion that not can be carried out other subsequent constructions in the process is unfavorable for the process optimization of entire Construction of Tunnel Liner, seriously affects
Construction efficiency.
Summary of the invention
The object of the present invention is to provide a kind of wholecircle jacked piles with small section needle beam trolley lining construction methods, are able to solve existing
In technology the problem of the lining construction inefficiency of wholecircle jacked piles with small section.
To achieve the goals above, the embodiment of the present invention provides a kind of wholecircle jacked piles with small section needle beam trolley lining construction side
Method, the construction method is the following steps are included: S1) according to the depth of the wholecircle jacked piles with small section, by the wholecircle light section
Tunnel is divided into multiple construction sections；S2) using dividing sequence lining method to carry out lining construction to each construction section, until completing institute
The lining construction of tunnel is stated, wherein the lining construction of each construction section includes to the hole wall of the construction section in circumferencial direction
On the part cleared up of specified region bring down stocks step, fitting completes the part and brings down stocks the hole wall of step to be laid with opening direction
The lining cutting step of the No.1 lining cutting reinforced steel bar ring with the first opening angle on ground, cleaning are not laid with the hole of No.1 lining cutting reinforced steel bar ring
No. two lining cutting reinforced steel bar rings that wall and the hole wall being bonded after cleaning laying are connected in a circumferential direction with the No.1 lining cutting reinforced steel bar ring
To form bringing down stocks lining cutting step and performing pouring for trolley concreting for the closing Lining Ring for closing Lining Ring
Step；Wherein step is brought down stocks in the part of each construction section and the lining cutting step of a upper construction section is performed simultaneously, each construction section
The part for bringing down stocks lining cutting step and next construction section of lining cutting step and a upper construction section is brought down stocks step and is performed simultaneously, each construction
Section bring down stocks lining cutting step and the lining cutting step for pouring step and next construction section of a upper construction section is performed simultaneously, each construction
Section pour step and the lining cutting step of bringing down stocks of next construction section is performed simultaneously；S3) to complete lining construction the tunnel into
Row maintenance.
Further, the step S2) further include: it is right after the wholecircle jacked piles with small section is divided into multiple construction sections
Part is completed in each construction section to bring down stocks the hole wall after step and bring down stocks cleaning in lining cutting step to complete not to be laid with No.1
The hole wall of lining cutting reinforced steel bar ring executes just pneumatically placed concrete and reaches first thickness.
Preferably, the first thickness is between 2-3cm.
Further, step S2) in, the step that pours includes: when executing the lining cutting step to the tunnel
Longitudinal direction promotes needle beam trolley to the casting position of the construction section, completes to bring down stocks lining cutting step described in the construction section
Afterwards, the formwork for placing on the needle beam trolley is adjusted to and the No.1 lining cutting reinforced steel bar ring of the construction section and No. two described
Kept between lining cutting reinforced steel bar ring the first interannular away from；By on the formwork for placing pour window to the formwork for placing with it is described
Concrete is injected between the hole wall of construction section to complete described to pour step.
Preferably, first interannular is away between 45-55mm.
Preferably, first opening angle is between 250 ° -280 °.
Wholecircle jacked piles with small section needle beam trolley lining construction method provided by the invention, wholecircle jacked piles with small section is divided into more
A construction section alternately applies part to multiple construction sections and brings down stocks step, lining cutting step, brings down stocks lining cutting step and pour step
Suddenly, the closed lining cutting reinforced steel bar ring in each construction section is divided into two sections, the No.1 lining cutting reinforced steel bar ring being respectively open and
It is connected No. two lining cutting reinforced steel bar rings of closing cyclization, lining construction side of the invention in circumferencial direction with the No.1 lining cutting reinforced steel bar ring
Method executes the lining cutting step of a upper construction section while step is brought down stocks in the part for carrying out one of construction section, applies executing this
Executed while workshop section's lining cutting step a upper construction section bring down stocks lining cutting step and step is brought down stocks in the part of next construction section, holding
The lining cutting step for pouring step and next construction section that a upper construction section is executed while bringing down stocks lining cutting step of the row construction section,
After the No.1 lining cutting reinforced steel bar ring of the construction section and No. two lining cutting reinforcing bar ring seals cyclization, execute the construction section to pour step same
Once construction section brings down stocks lining cutting step to Shi Zhihang, can construct simultaneously to multiple construction sections in this way, and in the prior art
It needs to complete just execute after waiting the concrete setting poured in the construction section after the complete lining construction an of construction section
The lining construction of next construction section is compared, lining construction method provided by the invention, is saved and is waited each construction section
The time of concrete setting substantially increases the construction efficiency of entire tunnel.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Attached drawing is and to constitute part of specification for providing further understanding of the present application, with following tool
Body embodiment is used to explain the application together, but does not constitute the limitation to the application.In the accompanying drawings:
Fig. 1 is the step flow chart of wholecircle jacked piles with small section needle beam trolley lining construction method provided by the invention.
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, top, bottom " is usually needle
For direction shown in the drawings either for it is vertical, on vertical or gravity direction for each component mutual alignment relation
Word is described.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Fig. 1 is the step process for the wholecircle jacked piles with small section needle beam trolley lining construction method that embodiment of the present invention provides
Figure.Lining construction method provided by the invention is the following steps are included: S1) according to the depth of the wholecircle jacked piles with small section, by institute
It states wholecircle jacked piles with small section and is divided into multiple construction sections；S2) lining cutting is carried out to each construction section using point sequence lining method to apply
Work, until the lining construction of the tunnel is completed, wherein the lining construction of each construction section includes to the construction section
Step is brought down stocks in the part that the specified region of hole wall in a circumferential direction is cleared up, the hole that step is brought down stocks in the part is completed in fitting
Wall be laid with opening towards ground the No.1 lining cutting reinforced steel bar ring with the first opening angle lining cutting step, clear up be not laid with No.1
What the hole wall of lining cutting reinforced steel bar ring and the hole wall being bonded after cleaning laying were connected in a circumferential direction with the No.1 lining cutting reinforced steel bar ring
No. two lining cutting reinforced steel bar rings with formed closing Lining Ring bring down stocks lining cutting step and for the closing Lining Ring perform trolley mix
What solidifying soil poured pours step；Wherein step is brought down stocks in the part of each construction section and the lining cutting step of a upper construction section is held simultaneously
Row, it is same that step is brought down stocks in the part for bringing down stocks lining cutting step and next construction section of the lining cutting step of each construction section and a upper construction section
Shi Zhihang, each construction section bring down stocks lining cutting step and the lining cutting step for pouring step and next construction section of a upper construction section is same
Shi Zhihang, each construction section pour step and the lining cutting step of bringing down stocks of next construction section is performed simultaneously；S3) completion lining cutting is applied
The tunnel of work is conserved.
Wherein, wholecircle jacked piles with small section needle beam trolley lining construction method provided by the invention, with existing lining construction
Method is compared using the lining construction for being further continued for next section of tunnel after the complete lining construction for completing one section of tunnel, and the present invention provides
Construction method be that the tunnel is divided into multiple construction sections, bring down stocks step using in the part for carrying out one of construction section
It is performed simultaneously the lining cutting step of a construction section, bringing down stocks for a upper construction section is executed while executing the construction section lining cutting step
The part of lining cutting step and next construction section brings down stocks step, and upper one is performed simultaneously when bringing down stocks lining cutting step executing the construction section
The lining cutting step for pouring step and next construction section of construction section, in the No.1 lining cutting reinforced steel bar ring and No. two linings that the construction section is laid with
After building reinforcing bar ring seal cyclization, execute the construction section pour that step is performed simultaneously construction section bring down stocks lining cutting step, this
The process that sample can be performed simultaneously the lining construction of multiple construction sections is conducive to the construction efficiency for improving wholecircle jacked piles with small section.
In one embodiment, the wholecircle jacked piles with small section is divided into multiple construction sections, to the multiple construction section point
It is not marked in sequence, is labeled as the first construction section, the second construction section ... N construction section, the lining cutting of each construction section is applied
Work process includes four steps: bringing down stocks step, lining cutting step, brings down stocks lining cutting step and pour step in part.It is applied in execution first
When step is brought down stocks in the part of workshop section, needs to clear up sundries on the hole wall part of the first construction section, native mud and loosen rock, become silted up
Mud, loose weak interlayer, the hole wall range of cleaning, which is subject to, to be covered by the No.1 lining cutting reinforced steel bar ring, and when cleaning is first used anti-
It is thick clear that shovel carries out basis, then is cleared up by hand fit's mini-excavator thin portion, and artificial sled is cleared up except relaxed rockmass and with high-pressure blast.
Side and roof arch is manually prized using reinforcement trolley except broken sillar is loosened, and Forward-testing, processing part owe to dig, based on hydraulic breaking hammer
It carries out owing digging processing, if bursting work is needed to carry out owing digging processing, treatment principle is: maximum single blow blasting charge is not greater than 40g, quick-fried
Pouring concrete surface, sealing and exposed steel bar must be protected comprehensively before broken, the method for protection can use waste and old wheel
Tire, circle weedtree, plank or the method for straw mat covering, after the completion of locally bringing down stocks step, fitting completes the part and brings down stocks step
The first construction section hole wall be laid with No.1 lining cutting reinforced steel bar ring to complete lining cutting step.The No.1 lining cutting reinforced steel bar ring is with the
The non-close reinforced steel bar ring of one opening angle, it is preferable that first angle is between 250 ° -280 °, it is further preferable that described first
Angle is 270 °.Second construction section adjacent with the first construction section is executed while executing the lining cutting step of the first construction section
Step is brought down stocks in part, and the first construction section is continued to execute after the completion of the lining cutting step of the first construction section brings down stocks lining cutting step simultaneously
Step is brought down stocks in the part of the lining cutting step and third construction section that execute the second construction section, brings down stocks lining cutting in the first construction section of completion
It is executed after step and pours step, walked in the lining cutting of bringing down stocks for executing the second construction section while pouring step for executing the first construction section
Step is brought down stocks in the rapid and lining cutting step of third construction section and the part of the 4th construction section, to the first construction section to pour step complete
Lining construction at rear first construction section terminates, in existing after the completion of bringing down stocks lining cutting step to needle beam trolley for the second construction section
After the demoulding of first construction section, start the second construction section execute pour that step is performed simultaneously third construction section bring down stocks lining cutting step
And the 4th construction section lining cutting step and the part of the 5th construction section bring down stocks step, simultaneously be unfolded to serve as a contrast in multiple construction sections in this way
The part built in working procedure brings down stocks step, lining cutting step, brings down stocks lining cutting step and pour step, until wholecircle jacked piles with small section
In the steps that pours of all construction sections be fully completed, the lining construction of entire wholecircle jacked piles with small section terminates.
Construction method provided by the invention can be after in the period for the concrete setting for waiting each construction section to pour
The continuous other process for executing next construction section, for example, being able to carry out first while executing the lining cutting step of the second construction section
Construction section bring down stocks lining cutting step and step is brought down stocks in the part of third construction section, optimize the entire lining construction work of the tunnel
Sequence improves the construction efficiency of the lining construction of the tunnel.
Before carrying out lining construction to wholecircle jacked piles with small section, need to carry out the hole wall of wholecircle jacked piles with small section clear
Reason, further, the step S2) further include: after the wholecircle jacked piles with small section is divided into multiple construction sections, to each institute
It states the hole wall after completing locally to bring down stocks step in construction section and brings down stocks cleaning in lining cutting step and complete not being laid with No.1 lining cutting steel
The hole wall of muscle ring executes just pneumatically placed concrete and reaches first thickness.
In the above-described embodiments, after step is brought down stocks in the part for completing the first construction section, in the first construction section cleaned out
Hole wall on just pneumatically placed concrete reach first thickness, equally when lining cutting step is brought down stocks in execution, complete be not laid with No.1 lining cutting
It is thick to pneumatically placed concrete at the beginning of the hole wall for not being laid with No.1 lining cutting reinforced steel bar ring after cleaning up to first after the cleaning of the hole wall of reinforced steel bar ring
Degree, it is preferable that the first thickness is between 2-3cm.
Further, step S2) described in pour step include: when executing the lining cutting step to the vertical of the tunnel
Deep direction promotes needle beam trolley to the casting position of the construction section, completes to bring down stocks lining cutting step described in the construction section
Afterwards, the formwork for placing on the needle beam trolley is adjusted to and the No.1 lining cutting reinforced steel bar ring of the construction section and No. two described
Kept between lining cutting reinforced steel bar ring the first interannular away from；By on the formwork for placing pour window to the formwork for placing with it is described
Concrete is injected between the hole wall of construction section to complete described to pour step.
In one embodiment, needle beam platform is promoted to the longitudinal direction of tunnel when executing the lining cutting step of a certain construction section
Vehicle is laid in the hole wall for being bonded the construction section to the casting position of the construction section and completes No.1 lining cutting reinforced steel bar ring and No. two lining cutting
Step is poured in construction section execution after reinforced steel bar ring and No.1 lining cutting reinforced steel bar ring and No. two lining cutting reinforcing bar closing cyclization；Execution pours
When step, the formwork for placing of needle beam trolley is adjusted to and the No.1 lining cutting reinforced steel bar ring of the construction section and No. two lining cutting reinforced steel bar rings
Formation closing Lining Ring between interannular away from for the first interannular away from, it is preferable that first interannular is away between 45-55mm；It adjusts
When whole formwork for placing, using the vertical oil cylinder in needle beam trolley front and back end and cross cylinder, needle beam trolley front and back end absolute altitude is adjusted, and make
Trolley center is overlapped with canal axes, the bed die string beam of formwork for placing can be used as level measurement basic point, bed die when adjusting absolute altitude
Center is adjusted as trolley center；After trolley center is overlapped with canal axes, formwork for placing hydraulic system is controlled to one
Side Dong Bi, which is overhanged, pours side mode, is finely adjusted with the lead screw of helical screw jack, makes what front and back end overhanged to pour side mode size
Reach design size and (reaches interannular between formwork for placing and the No.1 lining cutting reinforced steel bar ring of the construction section away from for the first interannular
Away from), same control formwork for placing hydraulic system is overhanged to other side Dong Bi pours side mode, with the lead screw of helical screw jack
It is finely adjusted, the side mode size that pours for overhanging front and back end reaches design size；All helical screw jack are finally screwed, are closed
Motor is closed, the operation handle of hydraulic valve in waggle hydraulic system makes system release, installs head plate, formwork for placing adjustment
It completes.After the completion of formwork for placing adjustment, window casting concrete is poured by what is opened up on formwork for placing, to complete the construction
The described of section pours step.
Wholecircle jacked piles with small section needle beam trolley lining construction method provided by the invention, wholecircle jacked piles with small section is divided into more
A construction section alternately applies part to multiple construction sections and brings down stocks step, lining cutting step, brings down stocks lining cutting step and pour step
Suddenly, the closed lining cutting reinforced steel bar ring in each construction section is divided into two sections, the No.1 lining cutting reinforced steel bar ring being respectively open and
It is connected No. two lining cutting reinforced steel bar rings of closing cyclization, lining construction side of the invention in circumferencial direction with the No.1 lining cutting reinforced steel bar ring
Method executes the lining cutting step of a upper construction section while step is brought down stocks in the part for carrying out one of construction section, applies executing this
Executed while workshop section's lining cutting step a upper construction section bring down stocks lining cutting step and step is brought down stocks in the part of next construction section, holding
The lining cutting step for pouring step and next construction section that a upper construction section is executed while bringing down stocks lining cutting step of the row construction section,
After the No.1 lining cutting reinforced steel bar ring of the construction section and No. two lining cutting reinforcing bar ring seals cyclization, execute the construction section to pour step same
Once construction section brings down stocks lining cutting step to Shi Zhihang, can construct simultaneously to multiple construction sections in this way, and in the prior art
It needs to complete just execute after waiting the concrete setting poured in the construction section after the complete lining construction an of construction section
The lining construction of next construction section is compared, lining construction method provided by the invention, is saved and is waited each construction section
The time of concrete setting substantially increases the construction efficiency of entire tunnel.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (6)
1. a kind of wholecircle jacked piles with small section needle beam trolley lining construction method, which is characterized in that the construction method includes following
Step:
S1) according to the depth of the wholecircle jacked piles with small section, the wholecircle jacked piles with small section is divided into multiple construction sections；
S2 it) uses and sequence lining method is divided to carry out lining construction to each construction section, until the lining construction of the tunnel is completed,
Wherein the lining construction of each construction section includes carrying out to the specified region of the hole wall of the construction section in a circumferential direction
Step is brought down stocks in the part of cleaning, the hole wall laying opening that step is brought down stocks in the part is completed in fitting has first opening towards ground
After the lining cutting step of the No.1 lining cutting reinforced steel bar ring of bicker degree, cleaning are not laid with the hole wall of No.1 lining cutting reinforced steel bar ring and are bonded cleaning
Hole wall is laid with No. two lining cutting reinforced steel bar rings being connected in a circumferential direction with the No.1 lining cutting reinforced steel bar ring to form closing Lining Ring
Bring down stocks lining cutting step and pour step for what the closing Lining Ring performed trolley concreting；It is wherein each to apply
Step is brought down stocks in the part of workshop section and the lining cutting step of a upper construction section is performed simultaneously, and the lining cutting step of each construction section is applied with upper one
The part for bringing down stocks lining cutting step and next construction section of workshop section is brought down stocks step and is performed simultaneously, and each construction section brings down stocks lining cutting step
It is performed simultaneously with the lining cutting step for pouring step and next construction section of a upper construction section, each construction section pours step under
The lining cutting step of bringing down stocks of one construction section is performed simultaneously；
S3) tunnel for completing lining construction is conserved.
2. lining construction method according to claim 1, which is characterized in that the step S2) further include:
After the wholecircle jacked piles with small section is divided into multiple construction sections, step is brought down stocks to part is completed in each construction section
It rear hole wall and brings down stocks cleaning in lining cutting step and completes not to be laid with the hole wall of No.1 lining cutting reinforced steel bar ring to execute just pneumatically placed concrete and reach
First thickness.
3. lining construction method according to claim 2, which is characterized in that the first thickness is between 2-3cm.
4. lining construction method according to claim 1, which is characterized in that step S2) in, the step that pours includes:
Needle beam trolley is promoted to pour position to the construction section to the longitudinal direction of the tunnel when executing the lining cutting step
It sets, after the completion of bringing down stocks lining cutting step described in the construction section, the formwork for placing on the needle beam trolley is adjusted to and institute
State kept between the No.1 lining cutting reinforced steel bar ring of construction section and No. two lining cutting reinforced steel bar rings the first interannular away from；
Coagulation is injected between the formwork for placing and the hole wall of the construction section by the window that pours on the formwork for placing
Soil is to complete described to pour step.
5. lining construction method according to claim 4, which is characterized in that first interannular is away between 45-55mm.
6. lining construction method according to claim 1, which is characterized in that first opening angle between 250 °-
280°。
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| CN201811267253.XA CN109139055A (en) | 2018-10-29 | 2018-10-29 | Wholecircle jacked piles with small section needle beam trolley lining construction method |
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| CN201811267253.XA CN109139055A (en) | 2018-10-29 | 2018-10-29 | Wholecircle jacked piles with small section needle beam trolley lining construction method |
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| CN109139055A true CN109139055A (en) | 2019-01-04 |
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| US4613258A (en) * | 1984-05-11 | 1986-09-23 | Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann | Apparatus for setting and removing tunnel casing rings |
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