CN106437754B - The composite structure and its construction method of pipe-plate lining ring and anchor cable - Google Patents
The composite structure and its construction method of pipe-plate lining ring and anchor cable Download PDFInfo
- Publication number
- CN106437754B CN106437754B CN201610484939.9A CN201610484939A CN106437754B CN 106437754 B CN106437754 B CN 106437754B CN 201610484939 A CN201610484939 A CN 201610484939A CN 106437754 B CN106437754 B CN 106437754B
- Authority
- CN
- China
- Prior art keywords
- pipe
- plate lining
- lining ring
- anchor cable
- section
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- 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
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
Abstract
The present invention provides the composite structures and its construction method of a kind of pipe-plate lining ring and anchor cable, and including the pipe-plate lining ring being set to inside country rock, pipe-plate lining ring is spliced by multiple section of jurisdiction blocks；It is characterized by: the inner wall in the pipe-plate lining ring is evenly arranged multiple anchor cables outward, the anchor cable both ends are fixedly connected with section of jurisdiction block inner wall and country rock respectively；There are gaps between adjacent tubes tile.The effective deformation controlling for rock surrounding gateways of the present invention, and can ensure that the globality of shield tunnel.
Description
Technical field
The invention belongs to shield tunnel classes, and in particular to the composite structure of a kind of pipe-plate lining ring and anchor cable and its applies
Work method.
Background technique
Pipe-plate lining ring is the structural shape that one kind is widely used in the tunnel shield (TBM), generally before tunnel piercing by
Batch production is prefabricated into pipe-plate lining block, and assembled cyclization, then releases shield tail, bear the various loads in tunnel in shield machine.Pipe
Sheet built ring can make to make under external country rock effect of contraction between each piece circumferential in impaction state under external load action
Pipe-plate lining ring becomes the bearing structure of closed stablity.
Can be seen that pipe-plate lining ring from the active state of above-mentioned shield tunnel is a kind of rock-steady structure, and tunnel is assembled into
Early stage, rigidity was larger after ring, and the range of suitable for surrounding rock deformation is smaller.Existing shield tunnel encounter rock deformation it is larger when place
Reason scheme is: shield machine digs driving, and the assembled cyclization of pipe-plate lining, the gap digged after lining cutting is filled using filler, wait serve as a contrast
After block wall after void filler solidification, multiple anchors being arranged radially along its circumference are arranged outward in the inner wall of pipe-plate lining structure
Bar forms the composite structure of pipe-plate lining and anchor pole, specific as shown in Fig. 1.Its principle are as follows: by the pipe-plate lining of closing cyclization
It is cut into the tunnel segment structure of opening, for constraining the rockbolt stress of section of jurisdiction when surrouding rock deformation, and then inhibits surrouding rock deformation, reach and release
The purpose of strata extrusion stress is put, but is had the following problems in actual application:
Complete pipe-plate lining ring stiffness is larger, permission deflection very little, and the anchor pole only ability when there is moderate finite deformation
It can play one's part to the full, therefore, need the pipe-plate lining original closing cyclization to be cut into hatch frame in existing technical solution,
Can make pipe-plate lining ring that moderate finite deformation occur makes anchor pole play a role, although later period cast-in-place closed peristome position, destroys original
There is the globality of Lining Ring, is unfavorable for the long-term operation security in tunnel.Especially since not using coagulation at section of jurisdiction opening position
Before grave closes, tunnel segment structure is a unclosed structure, therefore can not play the supporting power of section of jurisdiction itself, and only relies on anchor pole
Surrounding rock supporting is carried out, the original intention of anchor pole Yu the common stress of tunnel segment structure cannot be fully demonstrated, it could even be possible to because the branch of anchor pole
It is insufficient to protect power, causes structure that whole collapse occurs.
Summary of the invention
The purpose of the present invention is to the defects of the prior art, provide the combination knot of a kind of pipe-plate lining ring and anchor cable
Structure, effective deformation controlling for rock surrounding gateways, and can ensure that the globality of shield tunnel.
The present invention provides the composite structures of a kind of pipe-plate lining ring and anchor cable, including the section of jurisdiction lining being set to inside country rock
Ring is built, pipe-plate lining ring is spliced by multiple section of jurisdiction blocks；It is characterized by: the inner wall in the pipe-plate lining ring is equal outward
The even multiple anchor cables of arrangement, the anchor cable both ends are fixedly connected with section of jurisdiction block inner wall and country rock respectively；Exist between adjacent tubes tile
Gap.
The discrete material layer there are internal voids is provided between the pipe-plate lining ring outer wall and country rock inner wall.
The anchor pole is arranged radially along the circumference of pipe-plate lining structure.
Anchor cable hole is prefabricated on the section of jurisdiction block.
One end of the anchor cable is fixedly connected by anchoring piece with section of jurisdiction block inner wall.
The discrete material layer uses beans stone.The particle size range of the beans stone is 5-10mm, the beans Shi Congguan
The injected hole reserved on sheet built ring is blown into, and beans diameter size should be convenient for construction.
The extrusion deformation degree that the discrete material thickness degree meets discrete material layer is greater than section of jurisdiction block in anchorage cable stretching power
Outside deflection under effect.
The present invention provides a kind of construction methods of the composite structure of pipe-plate lining ring and anchor cable, it is characterised in that including with
Lower step:
Pipe-plate lining block assembly is prefabricated into pipe-plate lining ring by a. digging excavation shield tunnel；
B. pipe-plate lining ring releases shield tail with the propulsion of shield machine, into tunnel
C. it is filled due to digging the gap to be formed by discrete material layer 6 between country rock after pipe-plate lining ring wall；
D. on the inside of tunnel at reserved anchor cable hole, along tunnel radially outward portion wall rock drill-hole construction anchor cable, and
Tensioning is carried out in tunnel, is then fixed by anchoring piece；
E. after country rock stratum deformation is stablized, to pipe-plate lining ring wall grouting behind shaft or drift lining, the gap in discrete material layer is backfilled
It is closely knit.
The step d further includes that stretch-draw anchor expands outwardly section of jurisdiction block, and the gaping of joints between section of jurisdiction block circumferential direction increases
Arrive, can surrouding rock deformation prearrangement of deformation amount surplus, to ensure the safety of tunnel lining structure.
The present invention does not need incision section of jurisdiction ring compared with prior art to play a role, and utilize the stretching of anchor cable to apply and pre-tighten
Power can reinforce country rock, reduce rock deformation, while realizing the expansion in gap between the block of section of jurisdiction, reserve on the ring of section of jurisdiction
The space that country rock further deforms squeezes for the later period and provides space, ensure that the globality of sheet built structure.Pipe-plate lining simultaneously
It is provided with the discrete material layer there are gap between ring and country rock, further provides space for the deformation of country rock.The present invention is applicable in
In the surrouding rock deformation big tunnel using pipe-plate lining, including subway tunnel, railway tunnel, vcehicular tunnel, Hydraulic Tunnel etc..
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is structure of the invention partial schematic diagram a；
Fig. 3 is structure of the invention partial schematic diagram b；
Wherein, 1-pipe-plate lining ring；2-country rocks；3-gaps；4-anchor cable holes；5-anchor cables；6-discrete material layers；
7-anchoring pieces, the section of jurisdiction 8- block.
Specific embodiment
The following further describes the present invention in detail with reference to the accompanying drawings and specific embodiments, convenient for this hair is well understood
It is bright, but they limiting the invention.
As shown in Figure 1, the present invention provides the composite structures of a kind of pipe-plate lining ring and anchor cable, including it is set to country rock 2
Internal pipe-plate lining ring 1, pipe-plate lining ring 1 are spliced by multiple section of jurisdiction blocks 8；Pipe-plate lining ring 1 is closed tunnel knot
Structure.The inner wall of the pipe-plate lining ring 1 is evenly arranged multiple anchor cables 5 outward, and 5 both ends of anchor cable are respectively and in section of jurisdiction block 8
Wall is fixedly connected with country rock 2；The anchor cable 5 passes through section of jurisdiction block 8 on the inside of the tunnel, and is anchored in country rock 2, in tunnel into
5 tensioning of row anchor cable.
As shown in Fig. 2, between the adjacent tubes tile 8, there are gaps 3.The stretching force of anchor cable 5 can be wanted according to control deformation
It asks and the seam joint open between section of jurisdiction block 8 and block controls.It is provided between 1 outer wall of pipe-plate lining ring and 2 inner wall of country rock
There are the discrete material layers 6 of internal voids.It is kin that the outer shield of pipe-plate lining digs the gap to be formed filling beans stone etc.
Material, property are the compressible deformation of granular media state, and intensity is higher after gap is closely knit.The particle size range of the beans stone is 5-
10mm。
The anchor pole is arranged radially along the circumference of pipe-plate lining ring 1, the country rock being uniformly anchored in outside pipe-plate lining ring 1
In 2, guarantee uniformly transferring for country rock 2 and 1 stress of pipe-plate lining ring.
It is prefabricated with anchor cable hole 4 on the section of jurisdiction block 8, is convenient for site operation.One end of the anchor cable 5 by anchoring piece 7 with
Block 8 inner wall in section of jurisdiction is fixedly connected, and guarantees being stably connected with for anchor cable 5 and section of jurisdiction block 8.6 thickness of discrete material layer, which meets, to be dissipated
The extrusion deformation degree of body material layer 6 is identical as the deflection outside under the effect of anchorage cable stretching power of section of jurisdiction block 8.
The present invention is pre-tightened by the tensioning of anchor cable 5, is made have certain gap 3 between circumferential section of jurisdiction block 8, is reached 5 section of jurisdiction of anchor cable
Structure inhibits country rock 2 also to reserve certain 2 deformation space of country rock while deformation.After tunnel piercing is excavated, segment assembly block 8 is served as a contrast
It is built into ring.Pipe-plate lining ring 1 releases shield tail with the propulsion of shield machine, and beans can be filled in the gap digged outside pipe-plate lining ring 1
The biggish discrete material in the gaps such as stone.The drilling construction anchor cable 5 in 2 stratum of lateral country rock in pipe-plate lining ring 1, and in tunnel
It is circumferentially radial to carry out 5 tensioning of anchor cable and fixed on the inside of lining cutting.The combination knot formed by anchor cable 5 and pipe-plate lining ring 1
On the one hand structure reaches and reinforces country rock 2, reduce the purpose that country rock 2 deforms；Pass through radial tension anchor cable 5, circumferential section of jurisdiction block 8 simultaneously
It expands outwardly, the gap 3 between section of jurisdiction block 8 and block increases, and can also reserve deformation space for the deformation of country rock 2, protect structure
Safety.According to 2 deformation of country rock, anchor cable hole 4 can be first reserved on tunnel segment structure, facilitates site operation.It can using the present invention
Without cutting section of jurisdiction ring, and anchor cable 5 can apply pretightning force, reinforce country rock 2, and control country rock 2 deforms, while existing for the deformation of country rock 2
Pipe-plate lining ring 1 while having reached the deformation of control country rock 2, protects pipe-plate lining structure to deformation space has been reserved.
Work progress of the invention the following steps are included:
1, shield tunnel digging excavation, assembled prefabricated pipe-plate lining block cyclization, forms shield tunnel segment lining ring knot
Structure.
2, pipe-plate lining ring 1 releases shield tail with the propulsion of shield machine, to be formed after 11 wall of pipe-plate lining ring due to digging
Gap filled by discrete material layer 6, the material of discrete material layer 6 can choose the materials such as beans stone, and property is granular media shape
The compressible deformation of state, intensity is higher after gap is closely knit.
3, on the inside of tunnel at reserved anchor cable hole 4, along tunnel radially outward drilling construction anchor cable 5, and in tunnel
Interior carry out tensioning, it is then fixed by anchoring piece 7.By the tensioning of anchor cable 5, section of jurisdiction block 8 can be made to expand outwardly, 8 ring of section of jurisdiction block
Gaping of joints 3 between increases to d2 from d1, prearrangement of deformation amount surplus can be deformed for country rock 2, to ensure tunnel lining structure
Safety.
4, after 2 stratum deformation of country rock is stablized, lining cutting grouting behind shaft or drift lining can be backfilled the gap in discrete material layer 6 close
It is real.
5, after the completion of constructing tunnel, pretensioned 5 one side of anchor cable can reinforce country rock 2, reduce country rock 2 and deform, another
Aspect can be reduced to d1 from d2 by the gaping of joints 3 between the circumferential direction of section of jurisdiction, be country rock 2 when country rock 2 is further deformed
Deformation provides space, discharges strata extrusion stress, reduces 2 pressure of country rock acted on section of jurisdiction, it is ensured that tunnel-liner ring
The safety of structure.
The content that this specification is not described in detail belongs to the prior art well known to professional and technical personnel in the field.
Claims (7)
1. a kind of composite structure of pipe-plate lining ring and anchor cable, including being set to the internal pipe-plate lining ring (1) of country rock (2), pipe
Sheet built ring (1) is spliced by multiple section of jurisdiction blocks (8)；It is characterized by: the inner wall in the pipe-plate lining ring (1) is outside
Equipped with being evenly arranged multiple anchor cables (5), anchor cable (5) both ends are fixedly connected with section of jurisdiction block (8) inner wall and country rock (2) respectively；
There are gap (3) between adjacent tubes tile (8)；Presence is provided between pipe-plate lining ring (1) outer wall and country rock (2) inner wall
The discrete material layer (6) of internal voids；The anchor cable is uniformly arranged along pipe-plate lining ring (1) circumferencial direction；The anchor cable
Circumference along pipe-plate lining structure is radially deep into country rock.
2. the composite structure of pipe-plate lining ring and anchor cable according to claim 1, it is characterised in that: the section of jurisdiction block (8)
On be prefabricated with anchor cable hole (4).
3. the composite structure of pipe-plate lining ring and anchor cable according to claim 1, it is characterised in that: the anchor cable (5)
One end is fixedly connected by anchoring piece (7) with section of jurisdiction block (8) inner wall.
4. the composite structure of pipe-plate lining ring and anchor cable according to claim 1, it is characterised in that: the discrete material layer
(6) beans stone is used, beans stone property is the compressible deformation of granular media state, and intensity is higher after gap is closely knit.
5. the composite structure of pipe-plate lining ring and anchor cable according to claim 1, it is characterised in that: the discrete material
Layer (6) thickness guarantees that the extrusion deformation degree of discrete material layer (6) is greater than section of jurisdiction block (8) change outside under the effect of anchorage cable stretching power
Shape amount.
6. the composite structure of pipe-plate lining ring and anchor cable according to claim 4, it is characterised in that the grain of the beans stone
Diameter range is 5-10mm.
7. a kind of construction method of the composite structure of pipe-plate lining ring and anchor cable, it is characterised in that the following steps are included:
Pipe-plate lining block assembly is prefabricated into pipe-plate lining ring by a. digging excavation shield tunnel；
B. pipe-plate lining ring releases shield tail with the propulsion of shield machine, into tunnel；
C. it is filled due to digging the gap to be formed by discrete material layer between country rock after pipe-plate lining ring wall；
D. on the inside of tunnel at reserved anchor cable hole, along tunnel radially outward portion wall rock drill-hole construction anchor cable, and in tunnel
Interior carry out tensioning, is then fixed by anchoring piece；Stretch-draw anchor expands outwardly section of jurisdiction block, between the seam between section of jurisdiction block circumferential direction
Gap increase to can surrouding rock deformation prearrangement of deformation amount surplus, to ensure the safety of tunnel lining structure；
E. to pipe-plate lining ring wall grouting behind shaft or drift lining, the gap backfill in discrete material layer is closely knit after country rock stratum deformation is stablized.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610484939.9A CN106437754B (en) | 2016-06-27 | 2016-06-27 | The composite structure and its construction method of pipe-plate lining ring and anchor cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610484939.9A CN106437754B (en) | 2016-06-27 | 2016-06-27 | The composite structure and its construction method of pipe-plate lining ring and anchor cable |
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| CN106437754A CN106437754A (en) | 2017-02-22 |
| CN106437754B true CN106437754B (en) | 2019-12-03 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191210A (en) * | 2017-06-16 | 2017-09-22 | 中铁第勘察设计院集团有限公司 | Shield tunnel anti-floating system and its construction method based on prestress anchorage cable |
| CN108457667A (en) * | 2018-03-07 | 2018-08-28 | 华能西藏雅鲁藏布江水电开发投资有限公司 | A kind of self-compacting concrete pipe-plate lining structure and its construction method |
| CN108457668B (en) * | 2018-03-26 | 2019-10-18 | 华能西藏雅鲁藏布江水电开发投资有限公司 | A kind of double-shielded TBM joint liner supporting structure and its construction method |
| CN110645012A (en) * | 2019-11-11 | 2020-01-03 | 中铁工程装备集团有限公司 | Tunnel segment capable of deforming and releasing energy and using method thereof |
| CN110671125A (en) * | 2019-11-11 | 2020-01-10 | 中铁工程装备集团有限公司 | Anchor-support combined support system and construction method |
| CN111594199A (en) * | 2020-05-20 | 2020-08-28 | 中铁二局集团有限公司 | Construction method for wall back backfilling of double-shield TBM |
| CN111927476A (en) * | 2020-07-14 | 2020-11-13 | 中铁第四勘察设计院集团有限公司 | Method for constructing large-section tunnel by enlarging and digging shield tunnel by mining method |
| CN112664229A (en) * | 2021-01-25 | 2021-04-16 | 成都和拓土木工程有限公司 | Construction method for differential settlement of tunnel |
| CN113216988B (en) * | 2021-05-25 | 2022-04-01 | 中国矿业大学(北京) | Open type TBM construction supporting method for coal mine inclined shaft tunnel |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07986B2 (en) * | 1989-10-04 | 1995-01-11 | 東京電力株式会社 | Reaction force support structure in inclined shaft excavator |
| CN202659246U (en) * | 2012-07-09 | 2013-01-09 | 中铁第四勘察设计院集团有限公司 | Combined structure of duct piece lining structure and anchor rods |
| CN102733825B (en) * | 2012-07-09 | 2014-08-27 | 中铁第四勘察设计院集团有限公司 | Method for concrete pipe segment lining structure capable of adapting to surrounding rock deformation |
| CN203374284U (en) * | 2013-07-05 | 2014-01-01 | 煤炭工业济南设计研究院有限公司 | Soft rock roadway totally-closed fracture surface arching support |
| CN104265322B (en) * | 2014-09-23 | 2017-02-01 | 山东科技大学 | Control method of asymmetric deformation of deep mine roadway surrounding rock |
| CN206267854U (en) * | 2016-06-27 | 2017-06-20 | 中铁第四勘察设计院集团有限公司 | The combining structure of pipe-plate lining ring and anchor cable |
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