CN108150200A - A kind of support of tunnel arch and application method - Google Patents
A kind of support of tunnel arch and application method Download PDFInfo
- Publication number
- CN108150200A CN108150200A CN201810050819.7A CN201810050819A CN108150200A CN 108150200 A CN108150200 A CN 108150200A CN 201810050819 A CN201810050819 A CN 201810050819A CN 108150200 A CN108150200 A CN 108150200A
- Authority
- CN
- China
- Prior art keywords
- arch
- support
- tunnel
- telescopic device
- country rock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
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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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
- E21D11/183—Supporting means for arch members, not provided for in E21D11/22
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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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
- E21D11/186—Pre-stressing or dismantling devices therefor
-
- 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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
- E21D11/22—Clamps or other yieldable means for interconnecting adjacent arch members either rigidly, or allowing arch member parts to slide when subjected to excessive pressure
Abstract
The present invention relates to tunnel construction technical fields, more particularly to a kind of support of tunnel arch and application method, the support of tunnel arch of the present invention includes the round arch frame body structure set along tunnel inner wall, and multiple support constructions being connected in the arch agent structure, described support construction one end is connected in the arch agent structure, the other end is equipped with the telescopic device to stretch to country rock side, so that the support construction is extending to country rock, it contacts to form effective support with country rock, the support of tunnel device is by setting stretching structure, the control of fitting tightness is carried out to country rock excavation face by stretching structure, solves the problems, such as load concentration when steel arch-shelf supports country rock excavation face, ensure that support device is supported along tunnel section circumferential direction, it ensures the construction quality and construction safety.
Description
Technical field
The present invention relates to tunnel construction technical field, more particularly to a kind of support of tunnel arch and application method.
Background technology
Constructing tunnel is always the aspect that highway and railway construction need emphasis control in the process.However, it either uses
Traditional Mining Method or New Austrian Tunneling Method construction, all have a problem that：After carrying out explosion, it is certain poor that excavation face has with estimated effect
Not, it is poor to excavate surface evenness.
Poor due to excavating surface evenness, when carrying out preliminary bracing, there are larger difficulties.Specifically：Steel arch-shelf
It is difficult to closely, be comprehensively in direct contact with the country rock after explosion, only have part to contact contact, further, since steel arch-shelf
The position of erection all chosen by rule of thumb by operating personnel, so often there is partially or fully hanging erection in steel arch-shelf
State.
In the case where steel arch-shelf all can not be bonded contact with excavation face inner wall, steel arch-shelf is by concentration of local load or partially
The effect of load is pressed, be easy to cause deformation or even is destroyed.《Railway tunnel work construction technology guide》Middle regulation：Along outside steelframe
Edge is every 2m gads or concrete precast block wedging.But in Practical Project, it is difficult to accomplish this point, because of gad or coagulation
Elastic native prefabricated section is difficult control, and voussoir tension can cause steel arch-shelf unnecessary stress to increase, and voussoir pine excessively is more difficult
Achieve the purpose that wedging, and the voussoir in steel arch-shelf side is easily fallen because of its own gravity reason.Therefore, how steel is adjusted
The distribution of support force, makes steel arch-shelf give full play to support action on arch, becomes the technical issues of urgently to be resolved hurrily in the industry, also,
While section-steel support effect is played, how reducing input, simplifying constructing operation flow is also support of tunnel work progress
In very important Consideration.
Invention content
It is an object of the invention to：During for being supported in the prior art using steel arch-shelf to country rock excavation face, exist
Prefabricated voussoir tightness is difficult control, and steel arch-shelf is partially or fully hanging, leads to steel arch-shelf by concentration of local load or bias
The effect of load, be easy to cause deformation, destroy, and then influence engineering construction quality and it is safe the problem of, a kind of tunnel branch is provided
Arch and application method are supportted, which carries out country rock excavation face by setting stretching structure, by stretching structure
The control of tightness is bonded, solves the problems, such as load concentration of local when steel arch-shelf supports country rock excavation face, ensures support
Device is supported along tunnel section circumferential direction, it is ensured that construction quality and construction safety.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical schemes：
A kind of support of tunnel arch, including the round arch frame body structure that is set along tunnel inner wall and it is multiple be connected to it is described
Support construction in arch agent structure, described support construction one end are connected in the arch agent structure, and the other end is equipped with
The telescopic device to stretch to country rock side so that the support construction is extending to country rock, contacts to form support with country rock.
Arch agent structure is arranged on tunnel inner wall, is circular layout along tunnel inner wall so that multiple support constructions are connected to
After in arch agent structure, excavation face is supported from multiple positions so that support of tunnel arch has multiple stress points, keeps away
Exempt from load local excessive when arch supports country rock excavation face to concentrate, it is ensured that construction quality and construction safety.
This programme is equipped with flexible dress by the connected support structure in round arch frame body structure, the other end of support construction
Put, when support of tunnel arch is supported country rock excavation face, can according between arch agent structure and tunnel inner wall away from
From adjustment telescopic device collapsing length so that one end of support construction is connected in arch agent structure, the other end extend to
Country rock is contacted with country rock and is adjacent to, and is solved the problems, such as that steel arch-shelf is partially or fully hanging in the prior art, is made round arch frame body
Each support construction in structure forms country rock effective support, ensures support of tunnel arch uniform force.
Further, since the telescopic device adjustable in length of each support construction, it can be according to arch agent structure and tunnel
The distance between inner wall carries out adaptability adjusting, so as to solve the tightness hardly possible carried out using prefabricated voussoir present in wedging
The problem of to control, ensures that the tightness of each position of arch agent structure is roughly the same, makes support of tunnel arch stress
Uniformly, ensure its safe and reliable work.
Further, the arch agent structure is steel arch-shelf, including the first steel arch-shelf unit and the second steel arch-shelf unit,
After the first steel arch-shelf unit and the connection of the second steel arch-shelf unit vault connector is formed at top.
Further, the steel arch-shelf is pre-bent obtained for traditional shaped steel.
Preferably, the support construction includes the precast base being connected in the arch agent structure, the flexible dress
It puts and is removably mounted on the precast base.
Precast base is set, precast base is connected in arch agent structure, so as to ensure support construction and arch master
Body structure is relatively fixed, and the pressure of telescopic device is all transmitted to by precast base in arch agent structure, makes branch
Support structure forms stable support to country rock excavation face.Telescopic device is removably mounted on precast base, in installation tunnel branch
When supportting arch, it can take flexible mode that telescopic device is installed, and according to the distance between arch agent structure and country rock, divide
The telescopic device of different extended lengths is not installed.
The extended length of the telescopic device of each support construction can be identical, can not also be identical, when extended length is identical
When, the extended length of telescopic device must not be less than the longest distance between arch agent structure and country rock, ensure all supports
Structure can contact to form effective support with country rock；When extended length difference, extended length and the arch main body of telescopic device
Distance is corresponding between structure and country rock.
Further, the precast base is steel structure, which welds with the arch agent structure.The two
Overall structure is welded into, ensures that support construction is connected firmly, while the pressure for being subject to telescopic device is led to arch agent structure
It crosses precast base to be all transmitted in arch agent structure, avoids arch agent structure local pressure.
Preferably, the precast base includes the fixing end and fixing end that both ends are connect with the arch agent structure
Between load segment, the installation notch for installing telescopic device are reserved on the load segment.
The both ends of precast base are connect with arch agent structure, so as to ensure that precast base is connect with arch agent structure
Securely, the load segment is located between two fixing ends, after telescopic device is mounted on the installation notch on load segment, the branch of formation
Support structure is stably mounted in arch agent structure, and secure support is formed to excavation face.
The telescopic device adaptability is assemblied in the installation notch.
Preferably, the telescopic device is spiro rod regulating device, quarter butt and connection including being used to be inserted into installation notch
Screw rod adjustment portion in the quarter butt end.
The screw rod adjustment portion includes knob, sleeve and the screw rod of mating setting, and the knob and sleeve can relatively rotate,
Knob is hex nut.
Further, the precast base is the material bar shaped steel disc identical with arch agent structure, in the bar shaped steel disc
Between section arch upward, form lug boss, the installation notch are the position-limiting drum being arranged on the lug boss, the shape of the position-limiting drum,
Depth is respectively with quarter butt shape and length adaptation, and the bottom and bar shaped steel disc both ends end of the position-limiting drum are in same plane
On so that when precast base is fixed in arch agent structure, position-limiting drum and bar shaped steel disc both ends end with arch main body knot
Structure connects, and when the bar shaped steel disc is mounted in arch agent structure, length direction and the tunnel axis direction of bar shaped steel disc are put down
Row.
Further, the position-limiting drum is cylindrical structure, and the quarter butt is rod structure.
Preferably, the lock hole for being useful for interspersed fixing steel rod is correspondingly arranged on the installation notch and telescopic device, made
Telescopic device is obtained to be connected on precast base by the fixing steel rod detachable.
Preferably, multiple support constructions are evenly distributed in round arch frame body structure.
Multiple support constructions are set in arch agent structure, and multiple support constructions are along round arch frame body structure
Circumferencial direction is evenly arranged, and making support construction, arch agent structure is more uniformly stressed when being supported to country rock excavation face.
Preferably, the both ends end of the arch agent structure is connected with the arch bottom for being used to support the arch agent structure
Seat.
Further, the pedestal includes the supporting plane being connect with arch agent structure and for being mounted on tunnel
The installation cambered surface on ground.
Accordingly, the present invention also provides a kind of application method of support of tunnel arch, tunnel as described above is being used
During road scaffold, according to following steps：
A, prefabricated, splicing arch agent structure；
B, supporting point is determined；
C, support construction is installed；
D, telescopic device is operated, the telescopic device is made to resist country rock excavation face；
E, step c and step d is repeated, until all support constructions are completed to install.
Aforesaid way is taken, is grown according to the distance between arch agent structure and country rock to adjust the elongation of telescopic device
Degree so as to which support construction be made to push against country rock, is solved the tightness carried out present in wedging using prefabricated voussoir and is difficult to control
The problem of processed, ensures that the tightness of each position of arch agent structure is roughly the same, makes support of tunnel arch uniform force,
Ensure the safe and reliable work of support of tunnel arch, fully realize its support effect.
Preferably, the support construction includes precast base and telescopic device, when step c installs support construction, specifically
Include the following steps：
C1, precast base is spot welded according to the support that step b is determined；
C2, it fixing steel rod is penetrated is opened in the lock hole on precast base and telescopic device in advance, before penetrating, first adjustment is stretched
The lock hole of compression apparatus and precast base makes the eyelet alignment of two components.
Aforesaid way is taken, precast base is welded in arch agent structure, makes the pressure that support construction is subject to whole
It is transmitted in arch agent structure, ensures that arch agent structure stress is more rationally uniform；It is pre- using fixing steel rod connection simultaneously
Pedestal and telescopic device processed both make to form detachable mounting structure, convenient for after the completion of construction to support of tunnel arch into
Row dismounting, is reused.
Preferably, it when step b determines supporting point, follows the steps below：
B1, the non-contact position for finding out arch agent structure and country rock excavation face；
B2, at the non-contact position, mark multiple supporting points, the length of two neighboring supporting point is less than or equal to 2m.
Aforesaid way is taken, makes support of tunnel arch when being supported to country rock excavation face, ensures support of tunnel arch
Be not in partially or fully hanging erected state, avoid support of tunnel arch by concentration of local load or Eccentric Load
The problem of acting on and deforming or destroy ensures that support of tunnel arch forms country rock good, reliable support effect.
Compared with prior art, beneficial effects of the present invention：
1st, the present invention is made more by setting round arch frame body structure, and multiple support constructions are arranged in arch agent structure
A support construction is supported country rock, has given full play to the supporting role of steel arch-shelf entirety, avoids and causes local stress mistake
Situation that is big or not stressing locally；
2nd, support construction is connected in arch agent structure, support construction is made to be integrated with arch agent structure, is solved
Wedging is carried out using prefabricated voussoir in the prior art and there are problems that easily coming off, and the tightness of support construction can be with
It freely controls, any excessive additional stress will not be caused to steel arch-shelf；
3rd, support of tunnel arch frame structure of the invention is simple, and cost of manufacture is cheap, and installation is quick, and firm supporting can be effectively ensured
Construction safety improves construction efficiency.
Description of the drawings：
Fig. 1 is the structure diagram of support of tunnel arch of the present invention.
Fig. 2 is the structure diagram of the precast base of support construction in Fig. 1.
Fig. 3 is the structure diagram of the telescopic device of support construction in Fig. 1.
Fig. 4 is structure diagram when support of tunnel arch of the present invention is applied.
It is marked in figure：1- arch agent structures, 101- the first steel arch-shelf units, 102- the second steel arch-shelf units, 2- vaults
Connector, 3- arch pedestals, 4- support constructions, 41- precast bases, 41a- fixing ends, 41b- installation notch, 42- telescopic devices,
42a- quarter butts, 42b- lock holes, 42c- screw rod adjustment portions, 42c1 knobs, 42c2-sleeve, 42c3- screw rods, 5- country rocks, 6- are solid
Determine iron staff.
Specific embodiment
With reference to test example and specific embodiment, the present invention is described in further detail.But this should not be understood
Range for the above-mentioned theme of the present invention is only limitted to following embodiment, all to belong to this based on the technology that the content of present invention is realized
The range of invention.
Embodiment 1
Support of tunnel arch, as shown in Figure 1, Figure 2, Figure 3 and Figure 4, including the round arch frame body structure set along tunnel inner wall
1 and multiple support constructions 4 being connected in the arch agent structure 1, described 4 one end of support construction be connected to the arch
In frame body structure 1, the other end is equipped with the telescopic device 42 that stretches to 5 side of country rock so that the support construction 4 is extending to enclosing
Rock 5 contacts formation support with country rock 5.
Arch agent structure 1 is arranged on tunnel inner wall, is circular layout along tunnel inner wall so that multiple support constructions 4 connect
After in arch agent structure 1, excavation face is supported from multiple positions so that support of tunnel arch has multiple stress
Point, load local excessive is concentrated when avoiding the arch from supporting country rock excavation face, it is ensured that construction quality and construction safety.
The other end of support construction 4 is equipped with telescopic device 42, when support of tunnel arch is supported country rock excavation face,
The collapsing length of telescopic device 42 can be adjusted according to the distance between arch agent structure 1 and tunnel inner wall so that support construction 4
One end be connected in arch agent structure 1, the other end is extended to country rock 5, is contacted and is adjacent to country rock 5.
As a kind of embodiment therein, the arch agent structure 1 is steel arch-shelf, including the first steel arch-shelf unit
101 and the second steel arch-shelf unit 102, in top shape after the first steel arch-shelf unit 101 and the connection of the second steel arch-shelf unit 102
Arching apical grafting head 2, the steel arch-shelf are pre-bent obtained for traditional shaped steel.
As a kind of embodiment therein, the support construction 4 includes being connected to pre- in the arch agent structure 1
Pedestal 41 processed, the telescopic device 42 are removably mounted on precast base 41.
In the present embodiment, the extended length of the telescopic device 42 of each support construction 4 is set as equal length, it can also
The extended length of the telescopic device 42 of each support construction 4 is set as Length discrepancy, when extended length is identical, telescopic device 42
Extended length must not be less than longest distance between arch agent structure 1 and country rock 5, ensure all 4 equal energy of support construction
Formation effectively support is contacted with country rock 5；When extended length difference, extended length and the arch agent structure 1 of telescopic device 42
Distance is corresponding between country rock 5.
Further, the precast base 41 is steel structure, which welds with the arch agent structure 1
It connects.
As a kind of embodiment therein, the precast base 41 is connect including both ends with the arch agent structure 1
Fixing end 41a and fixing end 41a between load segment, be reserved with that telescopic device 42 is installed on the load segment
The both ends of precast base 41 are connect, so as to ensure precast base 41 and arch master by installation notch 41b with arch agent structure 1
Body structure 1 is connected firmly, and the load segment is located between two fixing end 41a, and telescopic device 42 is mounted on the peace on load segment
After tankage mouth 41b, the support construction 4 of formation is stably mounted in arch agent structure 1, and secure support is formed to excavation face.
42 adaptability of telescopic device is assemblied in the installation notch 41b.
As a kind of embodiment therein, the telescopic device 42 is spiro rod regulating device, and installation is inserted into including being used for
The quarter butt 42a of the notch 41b and screw rod adjustment portion 42c for being connected to the quarter butt 42a ends, the screw rod adjustment portion 42c packets
Knob 42c1, the sleeve 42c2 of mating setting and screw rod 42c3 are included, the knob 42c1 and sleeve 42c2 can be relatively rotated, knob
42c1 is hex nut.
Further, the precast base 41 bar shaped steel disc identical with arch agent structure 1 for material, the bar shaped steel disc
Interlude arches upward, and forms lug boss, the installation notch 41b is the position-limiting drum being arranged on the lug boss, the position-limiting drum
Shape, depth are respectively with quarter butt 42a shapes and length adaptation, and the bottom of the position-limiting drum is with bar shaped steel disc both ends end same
In one plane so that when precast base 41 is fixed in arch agent structure 1, position-limiting drum and bar shaped steel disc both ends end with arch
Frame body structure 1 connects, when the bar shaped steel disc is mounted in arch agent structure 1, the length direction and tunnel of bar shaped steel disc
Axis direction is parallel.
Further, the position-limiting drum is cylindrical structure, and the quarter butt 42a is rod structure.
As a kind of embodiment therein, it is correspondingly arranged on the installation notch 41b and telescopic device 42 and is useful for wearing
Insert the lock hole 42b of fixing steel rod 6 so that telescopic device 42 is connected to precast base by 6 detachable of fixing steel rod
On 41.
As a kind of embodiment therein, multiple support constructions 4 are evenly distributed on round arch frame body structure 1
On, multiple support constructions 4 are set in arch agent structure 1, and multiple support constructions 4 are along round arch frame body structure 1
Circumferencial direction is evenly arranged, and making support construction 4,1 stress of arch agent structure is more when the excavation face to country rock 5 is supported
Uniformly.
As a kind of embodiment therein, the both ends end of the arch agent structure 1, which is connected with, is used to support the arch
The arch pedestal 3 of agent structure 1.
Further, the arch pedestal 3 includes the supporting plane being connect with arch agent structure 1 and for installing
In the installation cambered surface of tunnel ground.
Embodiment 2
The application method of support of tunnel arch as shown in figures 1-4, when using such as support of tunnel arch in embodiment 1, is pressed
According to following steps：
A, prefabricated, splicing arch agent structure 1；
B, supporting point is determined；
C, support construction 4 is installed；
D, telescopic device 42 is operated, the telescopic device 42 is made to resist the excavation face of country rock 5；
E, step c and step d is repeated, until all support constructions 4 complete installation.
During operation, the extended length of telescopic device 42 is adjusted according to the distance between arch agent structure 1 and country rock 5,
So as to which support construction 4 be made to push against country rock 5, ensure that the tightness of each position of arch agent structure 1 is roughly the same, make tunnel
Road scaffold uniform force, it is ensured that its support effect is fully realized in the safe and reliable work of support of tunnel arch.
As a kind of embodiment therein, the support construction 4 includes precast base 41 and telescopic device 42, in step
When c installs support construction 4, following steps are specifically included：
C1, precast base 41 is spot welded according to the support that step b is determined；
C2, it fixing steel rod 6 is penetrated is opened in the lock hole 42b on precast base 41 and telescopic device 42 in advance, before penetrating,
The lock hole 42b of telescopic device 42 and precast base 41 is first adjusted, makes the eyelet alignment of two components.
Aforesaid way is taken, precast base 41 is welded in arch agent structure 1, the pressure for being subject to support construction 4
It is all transmitted in arch agent structure 1, ensures that 1 stress of arch agent structure is more rationally uniform；Simultaneously using fixing steel rod 6
Connect precast base 41 and telescopic device 42, both make to form detachable mounting structure, convenient for after the completion of construction to tunnel
Scaffold is dismantled, and is reused.
As a kind of embodiment therein, when step b determines supporting point, follow the steps below：
B1, the non-contact position for finding out arch agent structure 1 and the excavation face of country rock 5；
B2, at the non-contact position, mark multiple supporting points, the length of two neighboring supporting point is less than or equal to 2m.
Aforesaid way is taken, makes support of tunnel arch when being supported to country rock excavation face, ensures support of tunnel arch
Be not in partially or fully hanging erected state, avoid support of tunnel arch by concentration of local load or Eccentric Load
The problem of acting on and deforming or destroy ensures that support of tunnel arch forms country rock good, reliable support effect.
Claims (10)
1. a kind of support of tunnel arch, which is characterized in that including the round arch frame body structure set along tunnel inner wall, Yi Jiduo
A support construction being connected in the arch agent structure, described support construction one end are connected to the arch agent structure
On, the other end is equipped with the telescopic device to stretch to country rock side so that the support construction is extending to country rock, and shape is contacted with country rock
Into support.
2. support of tunnel arch according to claim 1, which is characterized in that the support construction includes being connected to the arch
Precast base in frame body structure, the telescopic device are removably mounted on the precast base.
3. support of tunnel arch according to claim 2, which is characterized in that the precast base includes both ends and the arch
Load segment between the fixing end and fixing end of the connection of frame body structure, is reserved on the load segment flexible for installing
The installation notch of device.
4. support of tunnel arch according to claim 2, which is characterized in that the telescopic device is spiro rod regulating device,
Including being used to be inserted into the quarter butt of installation notch and being connected to the screw rod adjustment portion of the quarter butt end.
5. support of tunnel arch according to claim 3, which is characterized in that corresponding in the installation notch and telescopic device
It is provided with the lock hole for interting fixing steel rod so that telescopic device is connected to prefabricated by the fixing steel rod detachable
On pedestal.
6. the support of tunnel arch according to one of claim 1-5, which is characterized in that multiple support constructions are uniformly divided
Cloth is in round arch frame body structure.
7. the support of tunnel arch according to one of claim 1-5, which is characterized in that the both ends of the arch agent structure
End is connected with the arch pedestal for being used to support the arch agent structure.
8. a kind of application method of support of tunnel arch, which is characterized in that using the tunnel as described in one of claim 1-7
During scaffold, according to following steps：
A, prefabricated, splicing arch agent structure；
B, supporting point is determined；
C, support construction is installed；
D, telescopic device is operated, the telescopic device is made to resist country rock excavation face；
E, step c and step d is repeated, until all support constructions are completed to install.
9. the application method of support of tunnel arch according to claim 8, which is characterized in that the support construction includes pre-
Pedestal and telescopic device processed when step c installs support construction, specifically include following steps：
C1, precast base is spot welded according to the support that step b is determined；
C2, it fixing steel rod is penetrated is opened in the lock hole on precast base and telescopic device in advance, before penetrating, first adjustment is stretched
The lock hole of compression apparatus and precast base makes the eyelet alignment of two components.
10. the application method of support of tunnel arch according to claim 8, which is characterized in that determine supporting point in step b
When, it follows the steps below：
B1, the non-contact position for finding out arch agent structure and country rock excavation face；
B2, at the non-contact position, mark multiple supporting points, the length of two neighboring supporting point is less than or equal to 2m.
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| CN201810050819.7A CN108150200A (en) | 2018-01-18 | 2018-01-18 | A kind of support of tunnel arch and application method |
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| CN201810050819.7A CN108150200A (en) | 2018-01-18 | 2018-01-18 | A kind of support of tunnel arch and application method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108797360A (en) * | 2018-06-28 | 2018-11-13 | 中国葛洲坝集团第五工程有限公司 | Cast-in-place arch bridge arch frame structure and method for dismounting in situ |
| CN108952755A (en) * | 2018-07-18 | 2018-12-07 | 安徽省交通规划设计研究总院股份有限公司 | A kind of assembled ultra-high performance concrete arcuate channels |
| CN110645025A (en) * | 2019-10-18 | 2020-01-03 | 樊建昆 | Double-layer arch frame support construction system for highway soft rock tunnel and construction method thereof |
| CN111561330A (en) * | 2020-04-30 | 2020-08-21 | 罗波 | Highway bridge and culvert supporting structure for bridge engineering |
| CN112664237A (en) * | 2020-12-29 | 2021-04-16 | 宁波朗达工程科技有限公司 | Tunnel support acting force adjusting device and method |
| CN113006834A (en) * | 2021-03-17 | 2021-06-22 | 浙江海洋大学 | Tunnel steel arch support deformation adjusting device and adjusting method |
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| CN111561330A (en) * | 2020-04-30 | 2020-08-21 | 罗波 | Highway bridge and culvert supporting structure for bridge engineering |
| CN111561330B (en) * | 2020-04-30 | 2022-02-08 | 罗波 | Highway bridge and culvert supporting structure for bridge engineering |
| CN112664237A (en) * | 2020-12-29 | 2021-04-16 | 宁波朗达工程科技有限公司 | Tunnel support acting force adjusting device and method |
| CN113006834A (en) * | 2021-03-17 | 2021-06-22 | 浙江海洋大学 | Tunnel steel arch support deformation adjusting device and adjusting method |
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Application publication date: 20180612 |