CN201241712Y - Primary support structure of large deformation formation tunnel - Google Patents
Primary support structure of large deformation formation tunnel Download PDFInfo
- Publication number
- CN201241712Y CN201241712Y CNU2008200300453U CN200820030045U CN201241712Y CN 201241712 Y CN201241712 Y CN 201241712Y CN U2008200300453 U CNU2008200300453 U CN U2008200300453U CN 200820030045 U CN200820030045 U CN 200820030045U CN 201241712 Y CN201241712 Y CN 201241712Y
- Authority
- CN
- China
- Prior art keywords
- tunnel
- deformation
- layer
- large deformation
- support structure
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model relates to a large-deformation layer tunnel primary support structure, belonging to the railway tunnel primary support structure technical field. The underground constructions such as tunnel and the like pass the soft rock fracture zone of complex stress conditions, and after excavating tunnel, the stress is released and the tunnel will occur bulking deformation, and is easy to occur large deformation, having large deformation amount, high deformation speed and long lasting time, while the surrounding rock has large area extruding into limitations, therefore, the support is fractured or damaged seriously, and is even instable to bring collapse accidents and high disposal difficulty. The large-deformation layer tunnel primary support structure adopts two-layer support, combining rigidity and flexibility, which is composed of a two-layer sprayed concrete, a system grouting anchor pile, a reinforcing mesh, a steel frame, a locking anchor cable and the like. The structure can effectively inhibit primary large deformation to prevent collapse and can fully release the stress of surrounding rock, to prevent long-time large force on the permanent structure, thereby confirming the structure of safety and reliability.
Description
Technical field
The utility model belongs to railway tunnel preliminary bracing structure field, relates to large deformation formation tunnel preliminary bracing structure.
Background technology
Underground constructions such as tunnel are by the soft rock zone of fracture location of geostatic stress state complex, behind the tunnel excavation, owing to broken bulging deformation takes place stress release, large deformation takes place easily, be characterized in that deflection is big, rate of strain fast, the duration is very long, the country rock large tracts of land is extruded fouling of clearance gauge, and supporting cracking or breakage are very serious, even unstability causes cave-in accident, and intractability is big.
The tunnel preliminary bracing is main force structure, and is most important to guaranteeing the safety during the constructing tunnel, simultaneously, also is main permanent force structure, must accomplish economical rationality, safe and reliable.
Summary of the invention
The purpose of this utility model is to provide a kind of tempers toughness with gentleness, anti-allow in conjunction with and the large deformation formation tunnel preliminary bracing structure of economic and reliable.
For achieving the above object, the technical solution adopted in the utility model is:
Large deformation formation tunnel preliminary bracing structure, its special character is: described large deformation formation tunnel preliminary bracing structure comprises double-layer injection concrete, system's grouting anchor pile, steel mesh reinforcement, steelframe, lock pin anchor cable; The surface in described tunnel is provided with one deck sprayed mortar, the system that radially is provided with grouting anchor pile in the tunnel, on system's grouting anchor pile, the surface of tunnel concrete is provided with steel mesh reinforcement, steelframe, end at system's grouting anchor pile is provided with lock pin anchor cable, and the external surface of its supporting and protection structure is a structure for second layer concrete.
The utility model is with respect to prior art, and its advantage is as follows:
This structure has fully been studied the origin cause of formation and the deformation mechanism of large deformation, tunnel preliminary bracing structure tempers toughness with gentleness, anti-ly allow combination, adopt combining structures such as double-layer injection concrete, system's grouting anchor pile, steel mesh reinforcement, steelframe, lock pin anchor cable, effectively inhibition initial stage excessive deformation is avoided landslide, fully discharge surrouding rock stress simultaneously, avoid permanent structure long-term stressed excessive, guarantee that structural safety is reliable.
Description of drawings
Fig. 1 is a structural section structure chart of the present utility model.
The specific embodiment
Referring to Fig. 1, the utility model large deformation formation tunnel preliminary bracing structure is characterized in that: described large deformation formation tunnel preliminary bracing structure comprises double-layer injection concrete 1, system's grouting anchor pile 2, steel mesh reinforcement 3, steelframe 4, lock pin anchor cable 5; The surface in described tunnel is provided with one deck sprayed mortar 1, the system that radially is provided with grouting anchor pile 2 in the tunnel, on system's grouting anchor pile 2, the surface of tunnel concrete is provided with steel mesh reinforcement 3, steelframe 4, end at system's grouting anchor pile 2 is provided with lock pin anchor cable 5, and the external surface of its supporting and protection structure is a structure for second layer concrete.
This structure is summed up the practical experience that large deformation is handled in domestic and international tunnel, adopt double-deck supporting, temper toughness with gentleness, partly form by double-layer injection concrete 1, system's grouting anchor pile 2, steel mesh reinforcement 3, steelframe 4, lock pin anchor cable 5 etc. respectively, can effectively control tunnel deformation, guarantee construction and structural safety.
Benching tunnelling method is adopted in the integrating tunnel construction, whole section is divided into arch, second section, bottom three parts to be applied successively, order is first pneumatically placed concrete → install system's grouting anchor pile → layings steel mesh reinforcement → set up steelframe → installations lock pin anchor cable → answer pneumatically placed concrete → reinforcement spray to establish concrete, wherein sprayed mortar divides and carries out for three times, spray just and multiple spray are one deck structure, and it is second layer structure that concrete is established in the reinforcement spray.
This structure has fully been studied the origin cause of formation and the deformation mechanism of large deformation, tunnel preliminary bracing structure tempers toughness with gentleness, anti-ly allow combination, adopt combining structures such as double-layer injection concrete, system's grouting anchor pile, steel mesh reinforcement, steelframe, lock pin anchor cable, effectively inhibition initial stage excessive deformation is avoided landslide, fully discharge surrouding rock stress simultaneously, avoid permanent structure long-term stressed excessive, guarantee that structural safety is reliable.
Claims (1)
1, large deformation formation tunnel preliminary bracing structure is characterized in that: described large deformation formation tunnel preliminary bracing structure comprises double-layer injection concrete (1), system's grouting anchor pile (2), steel mesh reinforcement (3), steelframe (4), lock pin anchor cable (5); The surface in described tunnel is provided with one deck sprayed mortar (1), the system that radially is provided with grouting anchor pile (2) in the tunnel, on system's grouting anchor pile (2), the surface of tunnel concrete is provided with steel mesh reinforcement (3), steelframe (4), end at system's grouting anchor pile (2) is provided with lock pin anchor cable (5), and the external surface of its supporting and protection structure is a structure for second layer concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200300453U CN201241712Y (en) | 2008-08-22 | 2008-08-22 | Primary support structure of large deformation formation tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200300453U CN201241712Y (en) | 2008-08-22 | 2008-08-22 | Primary support structure of large deformation formation tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201241712Y true CN201241712Y (en) | 2009-05-20 |
Family
ID=40715009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200300453U Expired - Fee Related CN201241712Y (en) | 2008-08-22 | 2008-08-22 | Primary support structure of large deformation formation tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201241712Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032080A (en) * | 2012-12-21 | 2013-04-10 | 江苏建筑职业技术学院 | Support method of weak and broken surrounding rock tunnel |
| CN103244146A (en) * | 2013-05-14 | 2013-08-14 | 中铁二十一局集团第四工程有限公司 | Construction method for steel frame connection in tunnel anchor-plate retaining |
| CN103244147A (en) * | 2013-05-14 | 2013-08-14 | 中铁二十一局集团第四工程有限公司 | Construction method for locking anchor tubes of tunnel anchor-plate retaining steel frames |
| CN103527219A (en) * | 2013-10-18 | 2014-01-22 | 四川省交通运输厅公路规划勘察设计研究院 | Tunnel supporting structure used for large deformation stratum and construction method of tunnel supporting structure |
| CN103939112A (en) * | 2014-05-07 | 2014-07-23 | 中铁第一勘察设计院集团有限公司 | Down-cross cheuch tunnel double-layer forepoling structure |
| CN105298524A (en) * | 2015-09-14 | 2016-02-03 | 中铁二十五局集团第四工程有限公司 | Deformation reinforcing method of karst cave tunnel initial support |
| CN107503779A (en) * | 2017-08-01 | 2017-12-22 | 中铁十局集团有限公司 | A kind of extrusion pressing type Support System in Soft Rock Tunnels prestress anchorage cable group supporting construction and construction technology |
| CN108661664A (en) * | 2018-04-04 | 2018-10-16 | 中交第三公路工程局有限公司 | A kind of tunnel crushed zone construction method and combination supporting device |
| CN109184753A (en) * | 2018-09-28 | 2019-01-11 | 中国电建集团成都勘测设计研究院有限公司 | The processing method of limit is invaded for deformation after Tunnel |
| CN114352358A (en) * | 2021-12-28 | 2022-04-15 | 中南大学 | Dynamic grading control method and system for large deformation of high-ground-stress deep-buried soft rock tunnel |
-
2008
- 2008-08-22 CN CNU2008200300453U patent/CN201241712Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032080A (en) * | 2012-12-21 | 2013-04-10 | 江苏建筑职业技术学院 | Support method of weak and broken surrounding rock tunnel |
| CN103244146A (en) * | 2013-05-14 | 2013-08-14 | 中铁二十一局集团第四工程有限公司 | Construction method for steel frame connection in tunnel anchor-plate retaining |
| CN103244147A (en) * | 2013-05-14 | 2013-08-14 | 中铁二十一局集团第四工程有限公司 | Construction method for locking anchor tubes of tunnel anchor-plate retaining steel frames |
| CN103244147B (en) * | 2013-05-14 | 2014-12-17 | 中铁二十一局集团第四工程有限公司 | Construction method for locking anchor tubes of tunnel anchor-plate retaining steel frames |
| CN103527219B (en) * | 2013-10-18 | 2016-03-16 | 四川省交通运输厅公路规划勘察设计研究院 | For the construction of the tunnel support structure on large deformation stratum |
| CN103527219A (en) * | 2013-10-18 | 2014-01-22 | 四川省交通运输厅公路规划勘察设计研究院 | Tunnel supporting structure used for large deformation stratum and construction method of tunnel supporting structure |
| CN103939112A (en) * | 2014-05-07 | 2014-07-23 | 中铁第一勘察设计院集团有限公司 | Down-cross cheuch tunnel double-layer forepoling structure |
| CN105298524A (en) * | 2015-09-14 | 2016-02-03 | 中铁二十五局集团第四工程有限公司 | Deformation reinforcing method of karst cave tunnel initial support |
| CN107503779A (en) * | 2017-08-01 | 2017-12-22 | 中铁十局集团有限公司 | A kind of extrusion pressing type Support System in Soft Rock Tunnels prestress anchorage cable group supporting construction and construction technology |
| CN107503779B (en) * | 2017-08-01 | 2024-04-02 | 中铁十一局集团有限公司 | Extrusion type weak surrounding rock tunnel prestressed anchor cable group supporting structure and construction process |
| CN108661664A (en) * | 2018-04-04 | 2018-10-16 | 中交第三公路工程局有限公司 | A kind of tunnel crushed zone construction method and combination supporting device |
| CN109184753A (en) * | 2018-09-28 | 2019-01-11 | 中国电建集团成都勘测设计研究院有限公司 | The processing method of limit is invaded for deformation after Tunnel |
| CN114352358A (en) * | 2021-12-28 | 2022-04-15 | 中南大学 | Dynamic grading control method and system for large deformation of high-ground-stress deep-buried soft rock tunnel |
| CN114352358B (en) * | 2021-12-28 | 2022-12-02 | 中南大学 | Dynamic grading control method and system for large deformation of high-ground-stress deep-buried soft rock tunnel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201241712Y (en) | Primary support structure of large deformation formation tunnel | |
| JP7125550B2 (en) | SUPPORT STRUCTURE AND CONSTRUCTION METHOD FOR TWO-STAGE HIGH-SPEED CLOSING TUNNEL WITH INVERTED ARCH | |
| CN202140098U (en) | Large soft rock deformation tunnel supporting structure based on controllable deformation release | |
| CN102937030B (en) | Bolting-grouting integrated support method for zonal disintegration of deep roadway surrounding rock | |
| CN103527219B (en) | For the construction of the tunnel support structure on large deformation stratum | |
| CN203296780U (en) | Supporting and protecting lining device used for preventing surrounding rock from large deformation in underground cavern construction | |
| CN102996149B (en) | Support method for bolt-grouting composite crushing dynamic-pressure roadway soft rock roof by high-pre-stressed anchor cable | |
| CN103775092B (en) | Tunnels in Shallow Buried tunneling remaining core soil in advance improvement CRD construction | |
| CN101967984B (en) | Deep well tunnel cable anchor rigid-flexible coupling support and surrounding rock overall reinforced support method | |
| CN203515604U (en) | Tunnel Support structure for schist layer in deformation | |
| CN102337903B (en) | Method of active coupling support in time and space for control of minimum deformation of surrounding rock of deep well roadway | |
| CN203452799U (en) | Corrugated steel tunnel supporting structure | |
| CN101769154A (en) | Excavation supporting method for tunnel construction | |
| CN102650212B (en) | Construction method for protecting partition wall in double-arch tunnel through temporary support of middle pilot tunnel | |
| CN101338678A (en) | Supporting arch hidden digging top-down construction method | |
| CN101539021B (en) | Road tunnel excavation method | |
| CN108518229A (en) | Large deformation weak broken wall rock outsized section tunnel excavation supporting structure and construction method | |
| CN103032080A (en) | Support method of weak and broken surrounding rock tunnel | |
| CN208236427U (en) | Large deformation weak broken wall rock outsized section tunnel excavation supporting structure | |
| CN110230497A (en) | A kind of positive barrel double -side approach construction method in threaded list road | |
| CN104453948A (en) | Vertical prestress steel pipe supporting structure for large-section subsurface tunnel and construction process | |
| CN102606173B (en) | Construction method for treating tunnel deformation segment and accelerating tunneling | |
| CN104120739A (en) | Multi-pilot tunnel excavation one-off arching construction method | |
| CN204436407U (en) | The structure that the pre-Geological disaster prevention of the double-deck preliminary bracing of a kind of big cross section Support System in Soft Rock Tunnels occurs | |
| CN105386779A (en) | Arch column method for building large-scale underground structure in shallow buried rock stratums |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090520 Termination date: 20170822 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |