CN204327112U - Tunnel hole-exiting advance support system - Google Patents
Tunnel hole-exiting advance support system Download PDFInfo
- Publication number
- CN204327112U CN204327112U CN201420730054.9U CN201420730054U CN204327112U CN 204327112 U CN204327112 U CN 204327112U CN 201420730054 U CN201420730054 U CN 201420730054U CN 204327112 U CN204327112 U CN 204327112U
- Authority
- CN
- China
- Prior art keywords
- tunnel
- advance support
- layer
- hole
- contour line
- 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.)
- Active
Links
- 238000009412 basement excavation Methods 0.000 claims abstract description 12
- 238000007569 slipcasting Methods 0.000 claims description 16
- 239000011435 rock Substances 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model discloses a tunnel hole advance support system has solved in the hole and has executed out the not up to standard technical problem of advance support to the mouth section of a hole. The tunnel face of the tunnel exit is characterized by comprising a tunnel exit face (1), an arch excavation contour line (2) is arranged on the upper portion of the tunnel exit face (1), a first layer of small grouting pipes (3) are uniformly arranged on the outer side of the arch excavation contour line (2), a second layer of small grouting pipes (4) are uniformly arranged on the outer side of the first layer of small grouting pipes (3), the elevation angle (alpha) of each first layer of small grouting pipe (3) is 10-15 degrees, and the elevation angle (beta) of each second layer of small grouting pipe (4) is 15-30 degrees. The utility model discloses practiced thrift construction cost, carried out the enhancement to the exit hole section vault country rock effectively and strutted, reached advance support's effect.
Description
Technical field
The utility model relates to the support system of a kind of tunnel tunnel face excavation, particularly a kind ofly goes out in construction of tunnel the advance support system that hole place uses.
Background technology
When tunnel construction is to the section of appearing, because Portal Section country rock generally has the feature of the shallow and country rock weakness of buried depth, will carry out advance support to Portal Section arch rock mass, guarantee safety successfully excavates driving.Because Portal Section surrouding rock stress is large, the advance support of Portal Section is that the large-diameter pipe canopy adopting length to be greater than 30 meters carries out applying, and this applies technique is holed by the arch rock mass of big machinery in tunnel, then squeezes into that seamless steel pipe slip casting come.When entering entrance construction, due to enter hole must outside hole smooth location, the place after smooth outside hole can meet heavy mechanical equipment well and to carry out holing the requirement of location, and can ensure that propping up the elevation angle of pillar canopy controls within the scope of 1-3 degree.End of appearing carry out Shed-pipe Advanced Support apply time, if going out outside hole to carry out advance support, need meet heavy mechanical equipment and to march into the arena and hole the place of needs going out a smooth place outside hole, there is the defect producing a large amount of engineering cost, if carry out pipe shed support to going out Portal Section arch country rock in Tunnel, due to limited space in hole, what the boring elevation angle of pipe canopy can not be met Portal Section advance support applies requirement.
Summary of the invention
The invention provides a kind of tunnel outlet advance support system, solve and apply advance support technical problem not up to standard to going out Portal Section in hole.
The utility model solves above technical problem by the following technical programs:
A kind of tunnel outlet advance support system, comprise tunnel outlet mouth face, the top of tunnel outlet mouth face is provided with arch excavation contour line, first floor slip casting ductule is provided with uniformly in the outside of arch excavation contour line, second layer slip casting ductule is provided with uniformly in the outside of first floor slip casting ductule, the elevation angle of first floor slip casting ductule is 10-15 degree, and the elevation angle of second layer slip casting ductule is 15-30 degree.
The inner side of arch excavation contour line is provided with preliminary bracing, and the inner side of supporting is in the early stage provided with secondary lining.
The utility model does not need to use large-scale construction equipment equipment at the advance support going out Portal Section, as long as can complete with minitunnel internal drilling equipment, shorten construction period, save construction cost, effectively carrying out strengthening supporting to going out Portal Section vault country rock, having reached the effect of advance support.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model on tunnel profile.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in detail:
A kind of tunnel outlet advance support system, comprise tunnel outlet mouth face 1, the top of tunnel outlet mouth face 1 is provided with arch excavation contour line 2, first floor slip casting ductule 3 is provided with uniformly in the outside of arch excavation contour line 2, second layer slip casting ductule 4 is provided with uniformly in the outside of first floor slip casting ductule 3, the angle of elevation alpha of first floor slip casting ductule is 10-15 degree, and the elevation angle β of second layer slip casting ductule is 15-30 degree.
The inner side of arch excavation contour line 2 is provided with preliminary bracing 5, and the inner side of supporting in the early stage 5 is provided with secondary lining 6.
Claims (2)
1. a tunnel outlet advance support system, comprise tunnel outlet mouth face (1), the top of tunnel outlet mouth face (1) is provided with arch excavation contour line (2), it is characterized in that, first floor slip casting ductule (3) is provided with equably in the outside of arch excavation contour line (2), second layer slip casting ductule (4) is provided with equably in the outside of first floor slip casting ductule (3), the elevation angle (α) of first floor slip casting ductule (3) is 10-15 degree, and the elevation angle (β) of second layer slip casting ductule (4) is 15-30 degree.
2. a kind of tunnel outlet advance support system according to claim 1, is characterized in that, the inner side of arch excavation contour line (2) is provided with preliminary bracing (5), and the inner side of supporting in the early stage (5) is provided with secondary lining (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420730054.9U CN204327112U (en) | 2014-11-29 | 2014-11-29 | Tunnel hole-exiting advance support system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420730054.9U CN204327112U (en) | 2014-11-29 | 2014-11-29 | Tunnel hole-exiting advance support system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204327112U true CN204327112U (en) | 2015-05-13 |
Family
ID=53163484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420730054.9U Active CN204327112U (en) | 2014-11-29 | 2014-11-29 | Tunnel hole-exiting advance support system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204327112U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676103A (en) * | 2017-10-30 | 2018-02-09 | 中国人民解放军陆军工程大学 | Construction method for extra-large-span cave depot grid arch support |
| CN108590704A (en) * | 2018-04-27 | 2018-09-28 | 中铁十二局集团有限公司 | Light section per-fore pouring liquid with small pipe pays maintaining method in advance |
| CN110307005A (en) * | 2019-07-09 | 2019-10-08 | 福建工程学院 | Device and method for Strengthening Tunnel mountain body entrance landslide |
| CN112983444A (en) * | 2021-03-04 | 2021-06-18 | 广州市盾建地下工程有限公司 | Shield tunneling method |
-
2014
- 2014-11-29 CN CN201420730054.9U patent/CN204327112U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676103A (en) * | 2017-10-30 | 2018-02-09 | 中国人民解放军陆军工程大学 | Construction method for extra-large-span cave depot grid arch support |
| CN108590704A (en) * | 2018-04-27 | 2018-09-28 | 中铁十二局集团有限公司 | Light section per-fore pouring liquid with small pipe pays maintaining method in advance |
| CN110307005A (en) * | 2019-07-09 | 2019-10-08 | 福建工程学院 | Device and method for Strengthening Tunnel mountain body entrance landslide |
| CN110307005B (en) * | 2019-07-09 | 2021-08-17 | 福建工程学院 | Device and method for reinforcing landslide at tunnel portal |
| CN112983444A (en) * | 2021-03-04 | 2021-06-18 | 广州市盾建地下工程有限公司 | Shield tunneling method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203756182U (en) | Support structure applied to shallow road tunnel in weak rock area | |
| CN103510957B (en) | A kind of combined type coal uncovering method | |
| CN103775092B (en) | Tunnels in Shallow Buried tunneling remaining core soil in advance improvement CRD construction | |
| WO2016095631A1 (en) | Support structure for tunnel having ultra-large variable section | |
| CN204327112U (en) | Tunnel hole-exiting advance support system | |
| CN203452799U (en) | Corrugated steel tunnel supporting structure | |
| CN104612698A (en) | Method for constructing upper step middle partition wall of shallow-buried excavation tunnel | |
| CN104612696B (en) | Construction method for large-section underground excavation subway station to pass through viaduct in fine sand layer by using column hole method | |
| CN103422873B (en) | Strong-strength extendable anchor rod | |
| CN104806251A (en) | Subsidiary inverted excavation construction method for urban subway station under complex environment | |
| CN104405411A (en) | Oversized variable cross section tunnel supporting structure | |
| CN107165661A (en) | A kind of high-ground stress weak surrounding rock large deformation tunnel overlength enlarged footing anchor cable construction method | |
| CN105862990A (en) | Prefabricated assembly well wall structure and construction method thereof | |
| CN105649655B (en) | Be used for following shield structure built-in toward peripheral stratum slip casting reinforcing apparatus | |
| CN108035742A (en) | A kind of passive harmonious method for protecting support of extreme rockburst tunnel master | |
| CN103867209A (en) | Method of layered and segmental construction, excavation and holing of transverse passages of vertical shaft of metro | |
| CN103031847B (en) | Reducing overlap joint combined type orifice pipe grouting method | |
| CN205260049U (en) | Deep roadway support uses novel concrete support | |
| CN204492831U (en) | Metro built by mining method adit construction component | |
| CN204186394U (en) | Full section of tunnel pre-reinforcement structure | |
| CN104018474B (en) | The method in a working tunnel backfill reconstruction maintenance hole | |
| CN107060778A (en) | Pass through high-rise building group back filled region method for tunnel construction | |
| CN204386617U (en) | Consolidation grouting structure of low waterhead diversion tunnel | |
| CN207554077U (en) | The passive harmonious supporting construction of extreme rockburst tunnel master | |
| CN203809010U (en) | Cavern stability improving structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |