CN205936634U - Big section joint rock mass subway tunnel supporting construction of little clean distance - Google Patents
Big section joint rock mass subway tunnel supporting construction of little clean distance Download PDFInfo
- Publication number
- CN205936634U CN205936634U CN201620694180.2U CN201620694180U CN205936634U CN 205936634 U CN205936634 U CN 205936634U CN 201620694180 U CN201620694180 U CN 201620694180U CN 205936634 U CN205936634 U CN 205936634U
- Authority
- CN
- China
- Prior art keywords
- steelframe
- tunnel
- faces
- anchor pole
- concrete
- 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
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses a big section joint rock mass subway tunnel supporting construction of little clean distance belongs to tunnel construction technical field for solve the strut problem of joint rock mass subway tunnel in the work progress. It includes preliminary bracing and the temporary support who goes on the tunnel, and tunnel cross section includes left and right pilot tunnel and be located the main cave between the left and right pilot tunnel, the preliminary bracing is including first stock and a first steelframe, just props up the inside and outside top -cross of steelframe for arranging permanent longitudinal tie muscle, props up just that the steelframe is inboard to spray permanent inlayer concrete, just props up the steelframe outside and sprays permanent outer concrete, temporary support is including facing a stock and facing a steelframe, face steelframe and be located main cave both sides vertical layout, face the inside and outside top -cross of a steelframe for arranging interim longitudinal tie muscle, face that a steelframe is inboard to spray an interim inlayer concrete, face the outer interim outer concrete of suface jet of a steelframe. The utility model discloses the tunnel supporting structure can the effective control country rock the deformation, guarantee the construction safety in tunnel.
Description
Technical field
The utility model belongs to Construction of City Tunnel field, is related to the supporting construction of Tunnel in Jointed Rock Mass, specifically, is
A kind of for two-wire small interval big cross section jointed rock mass subway tunnel pass through intersect double -side approach construction method adopted
Protection structure.
Background technology
With the development of the city, city rail is built just in high speed development, nearly all provincial capital and partly economically developed
Area is all building track traffic.Build track traffic in city, be greatly tunnel.First work of tunnel excavation
Sequence is rock excavation, and in digging process, whether country rock is stable, and in addition to wall rock geology condition and excavation method, tunnel props up
Shield measure has vital effect during tunnel excavation.
For the large cross-section tunnel in the stratum of joint, because it has obvious joints characteristics, for ensureing to prop up
Shield effect, its excavation step is more complicated, and therefore its supporting construction relative difficult, for the existing skill of support system of jointed rock mass
It is few that art refers to, easily causes STRESS VARIATION frequently using the supporting construction in general tunnel excavation, vault sinking, earth's surface are sunk
The problem of fall, the application to formulate suitable supporting construction mainly for intersecting double -side approach method.
Content of the invention
There is a problem of that tunnel support structure cannot be applied to Tunnel in Jointed Rock Mass for prior art, the utility model carries
Supply a kind of supporting construction for small interval big cross section jointed rock mass subway tunnel.
For realizing above-mentioned technical purpose, the technical solution adopted in the utility model is as follows：
A kind of small interval big cross section jointed rock mass subway tunnel supporting construction, including the preliminary bracing that tunnel is carried out with face
When supporting, tunnel cross sectional include left and right base tunnel and be located at left and right base tunnel between main hole.
Described preliminary bracing includes：It is located at arch wall both sides after left and right excavation with guide pit and be located at vault after leading wide open digging
Just an anchor pole and just a steelframe, a described just anchor pole is in that blossom type is arranged, a described just steelframe is circumferentially disposed along arch wall and vault,
Just inside and outside a steelframe, side is alternately arranged forever longitudinally connected muscle, just props up the thick permanent internal layer coagulation of injection 40 ~ 60mm inside steelframe
Soil, just props up and hangs permanent bar-mat reinforcement outside steelframe, and sprays the thick permanent outer concrete of 260 ~ 300mm；
Described gib includes：It is located at facing an anchor pole and facing a steelframe of main hole both sides after left and right excavation with guide pit, described
Facing an anchor pole is in that blossom type is arranged, a described steelframe that faces is vertically arranged positioned at main hole both sides, faces side inside and outside a steelframe and is alternately arranged
Longitudinally connected muscle temporarily, faces the thick temporarily interior layer concrete of injection 20 ~ 30mm inside a steelframe, faces to prop up a steelframe outer surface and hang and faces
Prop up bar-mat reinforcement, and spray the thick interim outer concrete of 200 ~ 250mm.
Using the tunnel support structure of technique scheme, by reasonable setting anchor rod system, flexible steel frame system, inside and outside
The composite lining structure such as layer concrete, can provide certain pre- allowance to surrouding rock deformation, prevent supporting construction from causing simultaneously
Stress frequently change, vault sinking, ground settlement the problems such as, thus reducing construction risk.
Limit further, a described just anchor pole adopts C25 hollow grouting anchor, and ring, longitudinal pitch are 1.0m × 0.5m, long
Spend for 5 ~ 6m.
Limit further, a described just steelframe adopts work 25b profile steel frame, and longitudinal pitch is 0.5m, forever longitudinally connected
Muscle adopts work C25 reinforcing bar, and circumferential distance is 1m.
Limit further, a described anchor pole that faces adopts C22 grouting rock bolt, and ring, longitudinal pitch are 1.0m × 0.5m, and length is
2~3m.
Limit further, a described steelframe that faces adopts work 22a profile steel frame, and longitudinal pitch is 0.5m, temporarily longitudinally connected
Muscle adopts work C22 reinforcing bar, and circumferential distance is 1m.
Compared to existing technology, the tunnel surrounding that can allow in big cross section jointed rock mass produces 120mm's to the utility model
Deformation, significantly alleviates and intersects the safe pressure that in two side-wall pilot tunnel work progress, supporting construction is subject to, reduce construction wind
Danger.
Brief description
Fig. 1 is tunnel support structure schematic diagram；
Fig. 2 is concrete pouring structure schematic diagram.
A steelframe, 21- forever interior layer concrete, 22- forever longitudinally connected muscle, the permanent outer layer of 23- at the beginning of an anchor pole, 2- at the beginning of 1-
Concrete, 3- faces an anchor pole, and 4- faces a steelframe, 41- interior layer concrete temporarily, 42- longitudinally connected muscle temporarily, the interim outer layer of 43-
Concrete.
Specific embodiment
In order that those skilled in the art may be better understood the present invention, with reference to the accompanying drawings and examples to this reality
Further illustrated with new technique scheme.
" longitudinal " described in the utility model refers to the direction that tunnel passage extends, and multiple tunnels passage is along longitudinally head and the tail
Connect and form tunnel, certainly, tunnel can be straight, can also be curved；Arbitrary cross section of tunnel passage and tunnel passage
Curve obtained from surface is intersecting is ring curve, and multiple ring curves parallel to each other form tunnel passage along longitudinal arrangement
Ring inner surface, the ring inner surface left and right sides is arch wall, and upper end arc top is vault.
As shown in Figure 1, 2, a kind of small interval big cross section jointed rock mass subway tunnel supporting construction, including carry out to tunnel
Preliminary bracing and gib, tunnel cross sectional includes left and right base tunnel A, B and is located at left and right main hole C between base tunnel A, B.
Described preliminary bracing includes：Positioned at first anchor pole 1 and the first steelframe 2 of ring inner surface, in work progress, its
Mainly to complete in two steps, first step is to be located at the first anchor that arch wall both sides are installed after left and right base tunnel A, B excavate
Bar 1 and just a steelframe 2, second step formed be master is wide open dig after be located at the first anchor pole 1 that vault installs and a first steelframe
2, a described just anchor pole 1 is in that blossom type is arranged, using C25 hollow grouting anchor, circumferential distance is 1.0m, and longitudinal pitch is
0.5m, just propping up anchor pole 1 length is 5 ~ 6m, preferably 6m；A described just steelframe 2 is circumferentially disposed along arch wall and vault, and it adopts work 25b
Profile steel frame, longitudinal pitch is 0.5m, just props up side inside and outside steelframe 2 and is alternately arranged work C25 forever longitudinally connected muscle 22, between its ring
Away from for 1m, just propping up the thick forever interior layer concrete 21 of steelframe 2 inner side injection 40 ~ 60mm, just prop up and outside steelframe 2, hang double-deck A8 steel
Muscle net（Spacing 150mm × 150mm）, and spray the thick permanent outer concrete 23 of 260 ~ 300mm.
Described gib includes：Left and right base tunnel A, B are located at facing an anchor pole 3 and facing a steelframe of main hole C both sides after excavating
4, a described anchor pole 3 that faces is in that blossom type is arranged, using C22 grouting rock bolt, circumferential distance is 1.0m, and longitudinal pitch is 0.5m, faces
Propping up anchor pole 3 length is 2 ~ 3m, preferably 2.5m；A described steelframe 4 that faces is vertically arranged positioned at main hole both sides, and it adopts work 22a shaped steel
Steelframe, longitudinal pitch is 0.5m, faces side inside and outside a steelframe 4 and is alternately arranged work C22 longitudinally connected muscle 42 temporarily, its circumferential distance is
1m, faces the thick temporarily interior layer concrete 41 of a steelframe 4 inner side injection 20 ~ 30mm, faces steelframe 4 outer surface and hang individual layer A8 reinforcing bar
Net（Spacing 200mm × 200mm）, and spray the thick interim outer concrete 43 of 200 ~ 250mm.
A kind of small interval big cross section jointed rock mass subway tunnel supporting construction above the utility model being provided is carried out
It is discussed in detail.The explanation of specific embodiment is only intended to help understand method of the present utility model and its core concept.Should refer to
Go out, for those skilled in the art, on the premise of without departing from the utility model principle, can also be to this
Utility model carries out some improvement and modifies, and these improve and modification also falls into the utility model scope of the claims
Interior.
Claims (5)
1. small interval big cross section jointed rock mass subway tunnel supporting construction, including the preliminary bracing that tunnel is carried out and interim
Shield, tunnel cross sectional include left and right base tunnel and be located at left and right base tunnel between main hole it is characterised in that：
Described preliminary bracing includes：First being located at arch wall both sides after left and right excavation with guide pit and being located at vault after leading wide open digging
Anchor pole and just a steelframe, a described just anchor pole is in that blossom type is arranged, a described just steelframe is circumferentially disposed along arch wall and vault, just props up
Inside and outside steelframe, side is alternately arranged forever longitudinally connected muscle, just props up the thick forever interior layer concrete of injection 40 ~ 60mm inside steelframe, just
Prop up and outside steelframe, hang permanent bar-mat reinforcement, and spray the thick permanent outer concrete of 260 ~ 300mm；
Described gib includes：It is located at facing anchor pole and facing a steelframe of main hole both sides after left and right excavation with guide pit, described face
Anchor pole is in that blossom type is arranged, a described steelframe that faces is vertically arranged positioned at main hole both sides, faces side inside and outside a steelframe and is alternately arranged temporarily
Longitudinally connected muscle, faces the thick temporarily interior layer concrete of injection 20 ~ 30mm inside a steelframe, faces to prop up a steelframe outer surface and hang and faces Zhi Gang
Muscle net, and spray the thick interim outer concrete of 200 ~ 250mm.
2. iron tunnel support structure according to claim 1 is it is characterised in that a described just anchor pole adopts C25 hollow to note
Slurry anchor pole, ring, longitudinal pitch are 1.0m × 0.5m, and length is 5 ~ 6m.
3. iron tunnel support structure according to claim 2 is it is characterised in that a described just steelframe adopts work 25b shaped steel
Steelframe, longitudinal pitch is 0.5m, and forever longitudinally connected muscle adopts work C25 reinforcing bar, and circumferential distance is 1m.
4. iron tunnel support structure according to claim 1 is it is characterised in that a described anchor pole that faces adopts C22 mortar anchor
Bar, ring, longitudinal pitch are 1.0m × 0.5m, and length is 2 ~ 3m.
5. iron tunnel support structure according to claim 4 is it is characterised in that a described steelframe that faces adopts work 22a shaped steel
Steelframe, longitudinal pitch is 0.5m, and longitudinally connected muscle adopts work C22 reinforcing bar temporarily, and circumferential distance is 1m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620694180.2U CN205936634U (en) | 2016-07-05 | 2016-07-05 | Big section joint rock mass subway tunnel supporting construction of little clean distance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620694180.2U CN205936634U (en) | 2016-07-05 | 2016-07-05 | Big section joint rock mass subway tunnel supporting construction of little clean distance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205936634U true CN205936634U (en) | 2017-02-08 |
Family
ID=57931313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620694180.2U Active CN205936634U (en) | 2016-07-05 | 2016-07-05 | Big section joint rock mass subway tunnel supporting construction of little clean distance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205936634U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107059634A (en) * | 2017-04-26 | 2017-08-18 | 盛亚红 | A kind of special gib equipment of tunnel bridge |
| CN109113747A (en) * | 2018-08-24 | 2019-01-01 | 江苏翰烽美筑工程技术有限公司 | A kind of tunnel excavation engineering method |
-
2016
- 2016-07-05 CN CN201620694180.2U patent/CN205936634U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107059634A (en) * | 2017-04-26 | 2017-08-18 | 盛亚红 | A kind of special gib equipment of tunnel bridge |
| CN109356632A (en) * | 2017-04-26 | 2019-02-19 | 盛亚红 | A kind of tunnel bridge construction gib equipment |
| CN107059634B (en) * | 2017-04-26 | 2019-05-17 | 高军 | A kind of dedicated gib equipment of tunnel bridge |
| CN109113747A (en) * | 2018-08-24 | 2019-01-01 | 江苏翰烽美筑工程技术有限公司 | A kind of tunnel excavation engineering method |
| CN109113747B (en) * | 2018-08-24 | 2020-08-11 | 江苏华设远州交通科技有限公司 | Tunnel excavation construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106337686B (en) | Three layers of subway station canopy structure of rocky stratum tunneling and construction method | |
| CN106761778B (en) | A kind of underground digging in subway station construction technology suitable for upper-soft lower-hard ground | |
| WO2021120991A1 (en) | Method for reconstructing shield tunnel for mining construction | |
| CN106014449B (en) | The construction method of two-wire small interval big cross section jointed rock mass subway tunnel | |
| CN109555528B (en) | Pass through that high angle is inverse to rush rich water richness sand tomography tunnel excavation and method for protecting support | |
| CN106567718B (en) | A kind of construction method of compound stratum list arch super-span subway station kerve support replacement | |
| CN109209392B (en) | Full-ring excavation method suitable for IV-V-grade surrounding rock of large-section tunnel | |
| CN104533453A (en) | Substep dynamic coupling support method for roadway fault fracture zone | |
| CN204729099U (en) | Rock quality layer tunneling three layers of subway station canopy structure | |
| CN105201516B (en) | A kind of main structure of subway station and its tetrad arch PBA excavating construction methods | |
| CN104612698A (en) | Method for constructing upper step middle partition wall of shallow-buried excavation tunnel | |
| CN102226399A (en) | Soft rock four-line large-span tunnel three-bench cable-bracing excavation construction method | |
| CN201412163Y (en) | Circular tunnel lining structure for construction of open-type tunnel boring machine | |
| CN108547643B (en) | A kind of construction method encircleed for handling tunnel top large size cavity solution cavity shield | |
| CN103821167A (en) | Construction method for subway station body | |
| CN106968691A (en) | Improve CD method construction methods in a kind of extremely frigid zones silty clay tunnel | |
| CN107762529B (en) | Lateral Hole and tunnel main tunnel infall construction method based on gib system | |
| CN106869969A (en) | A kind of excavation supporting construction method of soft rock large section tunnel | |
| CN108561156A (en) | Separate tunnel changes arch supporting construction and its construction method | |
| CN110486036B (en) | Construction method for expanding arch foot primary support arch cover method | |
| CN208280965U (en) | Coal mine deep well tunnel smooth surface concrete spraying support structure | |
| CN107288642A (en) | PBA construction technologies | |
| WO2020259059A1 (en) | Tbm parallel heading tunnel trunk construction method | |
| CN108166989A (en) | The asymmetric twin-arch tunnel interval wall construction method of water rich strata " OC " shape | |
| CN106437760A (en) | Large-section tunnel novel multi-layer lining structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |