CN206092004U - Loess tunnel initial stage supporting device that is under construction - Google Patents
Loess tunnel initial stage supporting device that is under construction Download PDFInfo
- Publication number
- CN206092004U CN206092004U CN201620830244.7U CN201620830244U CN206092004U CN 206092004 U CN206092004 U CN 206092004U CN 201620830244 U CN201620830244 U CN 201620830244U CN 206092004 U CN206092004 U CN 206092004U
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- shelf
- steel arch
- country rock
- steel
- advanced tubule
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Abstract
The utility model discloses a loess tunnel initial stage supporting device that is under construction, spraying including steel bow member, leading ductule and net and mixing an earth sheath, the steel bow member is become by I -steel, steel plate joint, high strength bolt fabric, adopts stiffener spare to connect between the two adjacent pin steel bow members, and single pin steel bow member both sides are equipped with lock foot stock subassembly respectively, and leading ductule arranges along tunnel excavation wheel profile, leading ductule tail end and steel bow member welded fastening, net spray mix an earth sheath by the reinforcing bar net and wrap up in the concrete layer in the reinforcing bar net outside constitutes. The utility model discloses an optimize overall structure, have strut in time, flexible good, closely knit degree is high, stress condition good, construction operation safety, country rock long term stability are good, with the inseparable cohesiveness of country rock good, with the country rock hug closely the tight and with the characteristics of the common load metamorphism of country rock.
Description
Technical field
The utility model is related to constructing tunnel construction technique field, more particularly to a kind of loess tunnel construction preliminary bracing dress
Put.
Background technology
In collapsible loess and the constructing tunnel containing breaking surrounding rock, geologic structure is complicated, because settlement by soaking is yellow in construction
Native easily landslide, the characteristic of the broken deformation of country rock, are difficult to form pressure arch opposing pressure from surrounding rock, excavate country rock extremely unstable, hold
Easily cave in, construction safety cannot be guaranteed.Therefore in the premise for guaranteeing safety, reduce engineering input, improve operating efficiency
Under, take the problem that suitable supporting construction is that mine tunnel engineering needs to solve.
Utility model content
The purpose of this utility model is to solve above-mentioned deficiency, there is provided a kind of loess tunnel construction preliminary bracing device, tool
Have that supporting is timely, flexible, packing is high, stress condition good, construction operation safety, country rock long-time stability are good and country rock is tight
Close caking property is good the characteristics of be close to tight and load metamorphism common with country rock with country rock.
The technical problem that the utility model is solved can employ the following technical solutions to realize：
A kind of loess tunnel construction preliminary bracing device, including steel arch-shelf, advanced tubule and net injection mixed mud supporting
Layer, the steel arch-shelf is made up of I-steel, plate joint, high-strength bolt group, using reinforcement between steel arch-shelf described in adjacent two Pin
Steel bar piece is attached, and steel arch-shelf described in single Pin is respectively provided on two sides with lock foot anchoring stock component, and the lock foot anchoring stock component is by locking pin
In being intervally arranged up and down, the lock foot anchoring stock component tail end is welded and fixed anchor pole with the steel arch-shelf, the advanced tubule edge
Tunnel excavation outline line arranges that the outer limb angle of the advanced tubule is 10 °～15 °, the advanced tubule protruded length
For 0.2m～0.45m, the advanced tubule underground length is more than 3.5m, and the advanced tubule circumferential distance size is
0.35m, the advanced tubule tail end is welded and fixed with the steel arch-shelf, the net injection mixed mud sheath by bar-mat reinforcement and
It is wrapped in the concrete layer on the outside of the bar-mat reinforcement to constitute, the mixed mud layer builds mixed by first shotcrete layer and secondary mould
Solidifying soil layer is constituted.
Spacing is 0.6m～0.8m between steel arch-shelf described in adjacent two Pin.
The advanced tubule adopts diameter dimension and is made up of the seamless steel pipe of 42mm.
The bar-mat reinforcement is made using the reinforced mesh of a diameter of 6.5mm spacing 200mm × 200mm.
The first shotcrete layer thickness be 100mm～150mm, the secondary form concrete layer thickness gauge
It is very little for 240mm～320mm.
The utility model has compared with prior art following outstanding advantages and effect：The utility model is overall by optimizing
Structure, is formed and is integrated with steel arch-shelf, advanced tubule, lock foot anchoring stock component, net injection mixed mud sheath and tunnel surrounding
Bearing structure, the self-bearing capacity of country rock can be played, can play a part of again reinforce country rock, optimization net injection mixed mud
Sheath is propped up, using first shotcrete layer and the composite construction of secondary form concrete layer, optimizes rational proportion, enhanced altogether
With the effect for carrying country rock release load, so as to ensure that tunnel long-term safety is used, collapsible loess is particularly well-suited to and containing broken
The tunnel working geology structure of broken country rock, with supporting it is timely, flexible, packing is high, stress condition good, construction operation peace
Entirely, country rock long-time stability it is good it is good with country rock tight bond be close to country rock tight and with the common load metamorphism of country rock
Feature.
Description of the drawings
Fig. 1 is the overall cross section structure diagram of the utility model embodiment；
Fig. 2 is the advanced tubule mounting structure schematic diagram of the utility model embodiment.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
As shown in Figure 1 to Figure 2, a kind of loess tunnel construction preliminary bracing device that the utility model is provided, including steel arch
Frame 1, advanced tubule 5 and net injection mixed mud sheath, steel arch-shelf 1 is by I-steel 12, plate joint, high-strength bolt group structure
Into, it is attached using stiffener part 6 between adjacent two Pin steel arch-shelfs 1, single Pin steel arch-shelfs 1 are respectively provided on two sides with lock foot anchoring stock
Component 11, spacing is 0.6m～0.8m between adjacent two Pin steel arch-shelfs 1, and lock foot anchoring stock component 11 is in be spaced up and down by lock foot anchoring stock
Arrangement, the tail end of lock foot anchoring stock component 11 is welded and fixed with steel arch-shelf 1, play fixed steel arch-shelf 1 act to keep it is integrally-built
Stability, improves the integer support ability of steel arch-shelf 1, and advanced tubule 5 is arranged along tunnel excavation outline line, outside advanced tubule 5
Limb angle is 10 °～15 °, and the protruded length of advanced tubule 5 is 0.2m～0.45m, and the underground length of advanced tubule 5 is more than
3.5m, the circumferential distance size of advanced tubule 5 is 0.35m, and the tail end of advanced tubule 5 is welded and fixed with steel arch-shelf 1, convenient and tunnel
Road periphery forms a back-up coat, and to improve country rock itself bearing capacity, advanced tubule 5 adopts diameter dimension for the seamless of 42mm
Steel pipe is made, and net injection mixed mud sheath is made up of bar-mat reinforcement 2 and the concrete layer being wrapped on the outside of bar-mat reinforcement 2, bar-mat reinforcement 2
Made using the reinforced mesh of a diameter of 6.5mm spacing 200mm × 200mm, mixed mud layer is by first shotcrete layer 3 and two
Secondary form concrete layer 4 is constituted, the thickness of first shotcrete layer 3 be 100mm～150mm, secondary form concrete layer 4
Thickness be 240mm～320mm, Main Function be protection with reinforce country rock, improve surrouding rock stress state such that it is able to from point
The self-stable ability of country rock is played, bar-mat reinforcement 2 can improve overall flexibility and the adhesive ability with country rock, can carry to country rock in time
For supporting resistance, self is waved from distribution, prevent country rock excessive deformation, while surrouding rock stress collection can also be avoided
In, country rock stress raisers region is eliminated or reduces, strengthen cohesive action, it is therefore prevented that rock loose damage or crag inbreak.
The utility model by optimize overall structure, formed with steel arch-shelf 1, advanced tubule 5, lock foot anchoring stock component 11,
The bearing structure that net injection mixed mud sheath and tunnel surrounding are integrated, can play the self-bearing capacity of country rock, again can be with
Play a part of to reinforce country rock, optimization net injection mixed mud sheath builds coagulation using first shotcrete layer 3 and secondary mould
The composite construction of soil layer 4, optimizes rational proportion, the common effect for carrying country rock release load is enhanced, so as to ensure that tunnel is long
Phase uses safely, is particularly well-suited to collapsible loess and the tunnel working geology structure containing breaking surrounding rock, timely, soft with supporting
Good, packing is high, stress condition is good for property, construction operation safety, country rock long-time stability are good and country rock tight bond is good and
The characteristics of country rock is close to tight and load metamorphism common with country rock.
As known by the technical knowledge, the utility model can be by other essence without departing from its spirit or the reality of essential feature
Apply scheme to realize.Therefore, embodiment disclosed above, for each side, is all merely illustrative, and is not only
's.It is all
It is included in the utility model in the range of the utility model or in the change being equal in the range of the utility model.
Claims (5)
1. a kind of loess tunnel construction preliminary bracing device, including steel arch-shelf, advanced tubule and net injection mixed mud sheath,
It is characterized in that：The steel arch-shelf is made up of I-steel, plate joint, high-strength bolt group, described in adjacent two Pin between steel arch-shelf
It is attached using stiffener part, steel arch-shelf described in single Pin is respectively provided on two sides with lock foot anchoring stock component, the lock foot anchoring stock group
By lock foot anchoring stock in being intervally arranged up and down, the lock foot anchoring stock component tail end is welded and fixed part with the steel arch-shelf, described advanced
Ductule arranges that the outer limb angle of the advanced tubule is 10 °～15 °, the advanced tubule along tunnel excavation outline line
Protruded length is 0.2m～0.45m, and the advanced tubule underground length is more than 3.5m, the advanced tubule circumferential distance chi
Very little the advanced tubule tail end is welded and fixed with the steel arch-shelf for 0.35m, and the net injection mixed mud sheath is by reinforcing bar
Net and the concrete layer being wrapped on the outside of the bar-mat reinforcement are constituted, and the mixed mud layer is by first shotcrete layer and secondary mould
Build concrete layer composition.
2. a kind of loess tunnel construction preliminary bracing device according to claim 1, it is characterised in that：Described in adjacent two Pin
Spacing is 0.6m～0.8m between steel arch-shelf.
3. a kind of loess tunnel construction preliminary bracing device according to claim 1, it is characterised in that：It is described advanced little to lead
Pipe adopts diameter dimension and is made up of the seamless steel pipe of 42mm.
4. a kind of loess tunnel construction preliminary bracing device according to claim 1, it is characterised in that：The bar-mat reinforcement is adopted
Made with the reinforced mesh of a diameter of 6.5mm spacing 200mm × 200mm.
5. a kind of loess tunnel construction preliminary bracing device according to claim 1, it is characterised in that：The first injection
Concrete layer thickness is 100mm～150mm, and the secondary form concrete layer thickness is 240mm～320mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620830244.7U CN206092004U (en) | 2016-07-25 | 2016-07-25 | Loess tunnel initial stage supporting device that is under construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620830244.7U CN206092004U (en) | 2016-07-25 | 2016-07-25 | Loess tunnel initial stage supporting device that is under construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206092004U true CN206092004U (en) | 2017-04-12 |
Family
ID=58467782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620830244.7U Expired - Fee Related CN206092004U (en) | 2016-07-25 | 2016-07-25 | Loess tunnel initial stage supporting device that is under construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206092004U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108708747A (en) * | 2018-05-23 | 2018-10-26 | 黄建国 | A kind of active stress eliminating device for loose sand sand cobble geology constructing tunnel |
| CN109723460A (en) * | 2019-01-15 | 2019-05-07 | 西南交通大学 | A kind of Deformation control supporting construction suitable for serious deformation |
| CN110630283A (en) * | 2019-09-12 | 2019-12-31 | 山东大学 | Three-layer supporting structure suitable for double-arch tunnel and construction method |
| CN112727502A (en) * | 2021-01-06 | 2021-04-30 | 中交第一公路勘察设计研究院有限公司 | Anti-fault-breakage connecting device for tunnel across fault-fracture zone and construction method of anti-fault-breakage connecting device |
-
2016
- 2016-07-25 CN CN201620830244.7U patent/CN206092004U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108708747A (en) * | 2018-05-23 | 2018-10-26 | 黄建国 | A kind of active stress eliminating device for loose sand sand cobble geology constructing tunnel |
| CN108708747B (en) * | 2018-05-23 | 2019-12-13 | 南京东南建筑机电抗震研究院有限公司 | Active stress relieving device for loose sand-gravel geological tunnel construction |
| CN109723460A (en) * | 2019-01-15 | 2019-05-07 | 西南交通大学 | A kind of Deformation control supporting construction suitable for serious deformation |
| CN110630283A (en) * | 2019-09-12 | 2019-12-31 | 山东大学 | Three-layer supporting structure suitable for double-arch tunnel and construction method |
| CN110630283B (en) * | 2019-09-12 | 2020-11-24 | 山东大学 | Three-layer supporting structure suitable for double-arch tunnel and construction method |
| CN112727502A (en) * | 2021-01-06 | 2021-04-30 | 中交第一公路勘察设计研究院有限公司 | Anti-fault-breakage connecting device for tunnel across fault-fracture zone and construction method of anti-fault-breakage connecting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170412 Termination date: 20180725 |